US20080145245A1 - Compressor for tire inflating combination - Google Patents
Compressor for tire inflating combination Download PDFInfo
- Publication number
- US20080145245A1 US20080145245A1 US12/070,411 US7041108A US2008145245A1 US 20080145245 A1 US20080145245 A1 US 20080145245A1 US 7041108 A US7041108 A US 7041108A US 2008145245 A1 US2008145245 A1 US 2008145245A1
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- United States
- Prior art keywords
- piston
- cylinder housing
- air compressor
- compressor assembly
- engaged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/16—Auto-repairing or self-sealing arrangements or agents
- B29C73/166—Devices or methods for introducing sealing compositions into articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/01—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
Definitions
- the present invention relates to a tire inflating combination, and more particularly to a tire inflating combination including an air compressor assembly having an improved sealing ring for facilitating a sliding engagement between a piston and a cylinder housing which includes an inclined inner peripheral surface.
- Typical air compressors have been developed and comprise a piston slidably engaged within a cylinder housing and movable relative to the cylinder housing in a reciprocating action, to pump air and/or to generate pressurized air, for inflating tires, or the like.
- U.S. Pat. No. 6,205,918 to Kumai et al., and U.S. Pat. No. 6,213,725 to Chou disclose two typical air compressors each comprising a piston slidably engaged with an inner peripheral surface of a cylinder housing, and a sealing ring engaged between the cylinder housing and the piston, for making an air tight seal between the cylinder housing and the piston.
- the piston is solidly secured to the piston rod, and will be moved in concert with the piston rod, and thus will be tilted relative to the cylinder housing when the piston rod is driven by a motor.
- the sealing ring may be disengaged from the cylinder housing when the piston is moved to bottom or outer end of the cylinder housing, due to tilting or inclined status of the piston rod relative to the cylinder housing, such that the sealing ring may not be used to suitably make an air tight seal between the cylinder housing and the piston.
- the inner peripheral surface of the cylinder housing is straight and may not be suitably made an air tight seal between the inner peripheral surface of the cylinder housing and the sealing ring of the piston.
- the present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the compressors.
- the primary objective of the present invention is to provide a tire inflating combination including an air compressor assembly having an improved sealing ring for facilitating a sliding engagement between a piston and a cylinder housing which includes an inclined inner peripheral surface, and for suitably making an air tight seal between the cylinder housing and the piston.
- an air compressor assembly comprising a base holder, a casing disposed in base holder, a cylinder housing including a chamber formed therein and defined by an inner peripheral surface, and including an outlet tube provided thereon, and a passage formed therein and communicating with the outlet tube, the outlet tube including a first outlet port formed therein for coupling to a hose, a second outlet port provided therein for coupling to a pressure gauge, and a third outlet port provided therein for coupling to a relief valve, the inner peripheral surface of the cylinder housing being tilted from one end to the other to form a frustum-shaped chamber, a piston slidably engaged in the cylinder housing, the piston including an outer peripheral groove formed therein and defined by a base peripheral surface and two side surfaces, to form an outer opening and an inner recess, the piston including a pathway formed therein for air flowing purposes and including a spring blade attached to block the pathway thereof when the piston is moved relative to the cylinder housing in a compress
- the third outlet port of the outlet tube includes an inclined valve seat provided therein, and an inner thread formed therein for threading with a cap, the cap includes a bore formed therein and communicating with the outlet tube and the cylinder housing, for relieving over-pressurized air.
- the relief valve includes a valve element slidably engaged in the outlet tube, and engageable with the valve seat of the outlet tube, and a spring member engaged between the valve element and the cap, for biasing the valve element to engage with the valve seat of the outlet tube.
- FIG. 1 is an exploded view of a tire inflating combination including an air compressor assembly
- FIG. 2 is a partial cross sectional view taken along lines 2 - 2 of FIG. 1 ;
- FIG. 3 is a partial exploded view of the air compressor assembly for the tire inflating combination
- FIG. 4 is a partial exploded view of the air compressor assembly
- FIG. 5 is a partial cross sectional view taken along lines 5 - 5 of FIG. 3 ;+
- FIGS. 6 , 7 are partial cross sectional views similar to FIG. 5 , illustrating the operation of the air compressor assembly
- FIG. 8 is an enlarged partial plan view of a piston for the air compressor assembly
- FIG. 9 is an enlarged partial plan view similar to FIG. 8 , illustrating the operation of the air compressor assembly
- FIG. 10 is a further enlarged partial plan view of the piston for the air compressor assembly
- FIG. 11 is a top plan view of a sealing ring for the piston of the air compressor assembly
- FIG. 12 is a partial cross sectional view taken along lines 12 - 12 of FIG. 11 ;
- FIG. 13 is a partial cross sectional view taken along lines 13 - 13 of FIG. 4 ;
- FIG. 14 is a partial cross sectional view similar to FIG. 13 , illustrating the operation of a safety valve or relief valve for the air compressor assembly;
- FIG. 15 is a partial plan view illustrating a plug for coupling the air compressor assembly to an electric power source
- FIG. 16 is an enlarged partial plan view illustrating a conductor device of the plug for coupling to the electric power source.
- FIG. 17 is an enlarged partial cross sectional view of the conductor device of the plug.
- a tire inflating combination 1 in accordance with the present invention comprises an air compressor assembly 10 for generating pressurized air to pump or to inflate tires 90 or the like.
- a sealant container 91 may further be provided and coupled between the air compressor assembly 10 and the tire 90 , for selectively supplying sealant into the tire 90 .
- a bladder or a receptacle 92 is disposed or engaged in the sealant container 91 , and includes a chamber 93 formed or provided therein for receiving sealant that is provided to be selectively supplied into the tire 90 .
- the receptacle 92 includes a mouth 94 having a film or cap 95 attached thereto, to enclose or to seal the chamber 93 thereof, and to prevent the sealant from flowing out of the receptacle 92 of the sealant container 91 .
- the mouth 94 of the receptacle 92 is coupled to the air compressor assembly 10 via a control valve 96 , which may be selectively opened or actuated to allow the pressurized air generated by the air compressor assembly 10 to flow into the mouth 94 of the receptacle 92 before flowing or supplying into the tire 90 .
- the pressurized air may force to open the cap 95 , to blow and to supply the sealant into the tire 90 .
- a check valve 97 may further be provided and coupled between the air compressor assembly 10 and the sealant container 91 or the receptacle 92 , for limiting the sealant to flow into the tire 90 only, and to prevent the sealant from flowing backward from the tire 90 into the sealant container 91 or the receptacle 92 .
- the air compressor assembly 10 includes a base holder 11 , a cover 12 attached onto the base holder 11 , to form or define a chamber 13 in the base holder 11 or between the base holder 11 and the cover 12 , and includes a motor 14 disposed in the chamber 13 of the base holder 11 and having a pinion 16 attached to a spindle 15 thereof, for rotating or driving the pinion 16 .
- a fan device 17 may further be provided and attached to the motor 14 , for being rotated or driven by the motor 14 to generate cooling or heat dissipating air.
- a casing 18 may further be provided and disposed in the chamber 13 of the base holder 11 , and a gear 19 may be rotated received or engaged in the casing 18 , and engaged with the pinion 16 , for allowing the gear 19 to be rotated or driven by the motor 14 via the pinion 16 .
- a weight or an eccentric member 20 is attached to the gear 19 , and preferably secured to the axle 21 of the gear 19 , and a shaft 22 is attached to the eccentric member 20 and offset from the axle 21 of the gear 19 , such that the shaft 22 is located or arranged eccentrically relative to the eccentric member 20 and the axle 21 of the gear 19 .
- a cylinder housing 25 is also disposed in the chamber 13 of the base holder 11 , and includes a chamber 26 formed or provided therein and defined by an inner peripheral surface 27 , and includes a passage 28 formed or provided in one end 29 thereof, for coupling to or for communicating with an outlet tube 30 , the inner peripheral surface 27 is inclined or tilted from the one end 29 toward the other end or the free end portion of the cylinder housing 25 for forming a frustum-shaped inner peripheral surface 27 and/or a frustum-shaped chamber 26 .
- the outlet tube 30 includes an outlet port 31 formed or provided therein for coupling to the tire 90 or to the sealant container 91 with a hose 98 .
- the outlet tube 30 further includes another outlet port 32 formed or provided therein for coupling to a pressure gauge 34 ( FIG. 3 ), for example, and further includes a further outlet port 33 formed or provided therein for coupling to a safety valve, a relief valve 40 ( FIGS. 3-4 and 13 - 14 ), or the like, for air relieving purposes, and for preventing the outlet tube 30 and the cylinder housing 25 from being over-pressurized.
- a pressure gauge 34 FIG. 3
- a further outlet port 33 formed or provided therein for coupling to a safety valve, a relief valve 40 ( FIGS. 3-4 and 13 - 14 ), or the like, for air relieving purposes, and for preventing the outlet tube 30 and the cylinder housing 25 from being over-pressurized.
- the outlet port 33 of the outlet tube 30 includes an inclined peripheral surface or valve seat 35 formed or provided therein, and includes an inner thread 36 formed or provided in the outer portion thereof for threading with a cap 37 which includes a bore 38 formed therein and communicating with the outlet tube 30 and the cylinder housing 25 , for allowing over-pressurized air to flow out or to relieve from the outlet tube 30 and the cylinder housing 25 .
- the safety valve or relief valve 40 includes a valve element 41 slidably engaged in the outlet tube 30 , and engageable with the inclined peripheral surface or valve seat 35 of the outlet tube 30 , for selectively enclosing or blocking the outlet tube 30 , and a spring member 42 engaged between the valve element 41 and the cap 37 , for biasing the valve element 41 to engage with the inclined peripheral surface or valve seat 35 of the outlet tube 30 .
- the spring member 42 includes a predetermined spring biasing force or resilience to allow air of a predetermined air pressure to flow out through the outlet tube 30 against the spring member 42 .
- a piston 50 is slidably received or engaged in the cylinder housing 25 , and coupled to the shaft 22 of the eccentric member 20 or of the gear 19 , to allow the piston 50 to be caused to move or to slide in the cylinder housing 25 in reciprocating action, by the motor 14 via the pinion 16 and the gear 19 and the shaft 22 .
- the piston 50 includes a pathway 52 formed therein for air flowing purposes, and includes a spring blade 53 attached to top thereof, and arranged to block or to shield the pathway 52 thereof when the piston 50 is moved toward the passage 28 of the cylinder housing 25 or toward the outlet tube 30 ( FIG. 7 ) in a compressing stroke or process.
- the spring blade 53 may also be forced to open the pathway 52 of the piston 50 when the piston 50 is moved away from the passage 28 of the cylinder housing 25 or away from the outlet tube 30 ( FIG. 6 ) in a returning stroke or process.
- the piston 50 further includes a peripheral groove 54 formed in the outer peripheral portion thereof, and defined by a base peripheral surface 55 and two outwardly opened or inclined side surfaces 56 , 57 , to form or define a wider outer opening 58 in the outer peripheral portion thereof and a narrower inner recess 59 , best shown in FIGS. 8-10 , and further includes a sealing ring 60 engaged in the peripheral groove 54 thereof, as shown in FIGS. 4-12 .
- the sealing ring 60 includes a peripheral channel 61 formed in the upper and middle portion thereof, to form or define a bottom or base segment 62 , an inner leg 63 and an outer leg 64 , in which the inner leg 63 is provided in a radially inner portion of the sealing ring 60 , for force-fitting in the narrower inner recess 59 of the piston 50 , and the outer leg 64 is provided in a radially outer portion of the sealing ring 60 , for slightly extending out of the wider outer opening 58 of the piston 50 .
- the outer leg 64 of the sealing ring 60 includes a flat surface 65 formed in the outer or free end portion 66 thereof, and preferably parallel to the bottom or base segment 62 thereof ( FIG. 12 ), and further includes an inclined surface 67 also formed in the outer or free end portion 66 thereof, and formed beside or adjacent to the flat surface 65 thereof.
- the outer leg 64 of the sealing ring 60 is provided for slidably engaging with the inclined or tilted inner peripheral surface 27 of the cylinder housing 25 ( FIGS. 5-7 ) and for suitably making an air tight seal between the inclined or tilted inner peripheral surface 27 of the cylinder housing 25 and the sealing ring 60 of the piston 50 .
- the piston 50 when the piston 50 is forced to move or to slide in the cylinder housing 25 in reciprocating action, by the motor 14 via the pinion 16 and the gear 19 and the shaft 22 , the piston 50 may be slightly inclined or tilted relative to the cylinder housing 25 .
- the outer leg 64 that is slightly extended out of the wider outer opening 58 of the piston 50 may be slidably engaged with the inner peripheral surface 27 of the cylinder housing 25 , to make a suitable air tight seal between the piston 50 and the cylinder housing 25 even when the piston 50 is inclined or tilted relative to the cylinder housing 25 .
- a coupler or a plug 70 may further be provided for coupling the air compressor assembly 10 to an electric power source of vehicles (not shown) or the like, to energize the air compressor assembly 10 .
- the plug 70 may be coupled to the motor 14 of the air compressor assembly 10 via an operating switch 71 which may thus be used to control or to actuate the motor 14 of the air compressor assembly 10 .
- the plug 70 includes a plug body 72 having a central electrode 73 provided or disposed therein, and a case or peripheral electrode 74 attached to the plug body 72 and having two or more conductor arms 75 provided thereon or extended therefrom, for allowing the central electrode 73 and the conductor arms 75 of the case or peripheral electrode 74 to be suitably coupled to the electric power source of the vehicles or the like.
- the air compressor in accordance with the present invention includes an improved sealing ring for facilitating a sliding engagement between a piston and a cylinder housing which includes an inclined inner peripheral surface, and for suitably making an air tight seal between the cylinder housing and the piston.
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- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Compressor (AREA)
Abstract
An air compressor device includes a piston slidably engaged in a cylinder housing and having an outer peripheral groove formed by a base peripheral surface and two side surfaces, to form an outer opening and an inner recess, a motor is coupled to the piston to move the piston in the cylinder housing in reciprocating action, and a sealing ring is engaged in the outer peripheral groove of the piston, for making an air tight seal between the cylinder housing and the piston. The sealing ring includes a peripheral channel to form a base segment, an inner leg and an outer leg, the outer leg is extended out of the outer opening of the piston, for slidably engaging with a tilted or inclined inner peripheral surface of the cylinder housing, even when the piston is tilted relative to the cylinder housing.
Description
- The present invention is a continuation-in-part of U.S. patent application Ser. No. 11/022,349, filed 22 Dec. 2004, pending and to be abandoned.
- 1. Field of the Invention
- The present invention relates to a tire inflating combination, and more particularly to a tire inflating combination including an air compressor assembly having an improved sealing ring for facilitating a sliding engagement between a piston and a cylinder housing which includes an inclined inner peripheral surface.
- 2. Description of the Prior Art
- Various kinds of typical air compressors have been developed and comprise a piston slidably engaged within a cylinder housing and movable relative to the cylinder housing in a reciprocating action, to pump air and/or to generate pressurized air, for inflating tires, or the like.
- For example, U.S. Pat. No. 6,205,918 to Kumai et al., and U.S. Pat. No. 6,213,725 to Chou disclose two typical air compressors each comprising a piston slidably engaged with an inner peripheral surface of a cylinder housing, and a sealing ring engaged between the cylinder housing and the piston, for making an air tight seal between the cylinder housing and the piston.
- In these typical air compressors, the piston is solidly secured to the piston rod, and will be moved in concert with the piston rod, and thus will be tilted relative to the cylinder housing when the piston rod is driven by a motor. However, the sealing ring may be disengaged from the cylinder housing when the piston is moved to bottom or outer end of the cylinder housing, due to tilting or inclined status of the piston rod relative to the cylinder housing, such that the sealing ring may not be used to suitably make an air tight seal between the cylinder housing and the piston.
- In addition, the inner peripheral surface of the cylinder housing is straight and may not be suitably made an air tight seal between the inner peripheral surface of the cylinder housing and the sealing ring of the piston.
- The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the compressors.
- The primary objective of the present invention is to provide a tire inflating combination including an air compressor assembly having an improved sealing ring for facilitating a sliding engagement between a piston and a cylinder housing which includes an inclined inner peripheral surface, and for suitably making an air tight seal between the cylinder housing and the piston.
- In accordance with one aspect of the invention, there is provided an air compressor assembly comprising a base holder, a casing disposed in base holder, a cylinder housing including a chamber formed therein and defined by an inner peripheral surface, and including an outlet tube provided thereon, and a passage formed therein and communicating with the outlet tube, the outlet tube including a first outlet port formed therein for coupling to a hose, a second outlet port provided therein for coupling to a pressure gauge, and a third outlet port provided therein for coupling to a relief valve, the inner peripheral surface of the cylinder housing being tilted from one end to the other to form a frustum-shaped chamber, a piston slidably engaged in the cylinder housing, the piston including an outer peripheral groove formed therein and defined by a base peripheral surface and two side surfaces, to form an outer opening and an inner recess, the piston including a pathway formed therein for air flowing purposes and including a spring blade attached to block the pathway thereof when the piston is moved relative to the cylinder housing in a compressing stroke, the spring blade being forced to open the pathway of the piston when the piston is moved relative to the cylinder housing in a returning stroke, a motor for coupling to the piston, to move the piston in the cylinder housing in reciprocating action, the motor including a spindle having a pinion attached thereto, a gear rotatably received and engaged in the casing and rotatably engaged with the pinion for allowing the gear to be rotated and driven by the motor with the pinion, an eccentric member attached to the gear, and a shaft attached to the eccentric member and offset from an axle of the gear and coupled to the piston with a piston rod, the motor including a fan device attached thereto and rotated and driven by the motor to generate a cooling air, and a sealing ring engaged in the outer peripheral groove of the piston, for slidably engaging with the tilted inner peripheral surface of the cylinder housing, and for making an air tight seal between the cylinder housing and the piston, the sealing ring including a peripheral channel formed in an upper portion thereof, to form a base segment, an inner leg and an outer leg, the inner leg being engaged in the inner recess of the piston, and the outer leg being extended out of the outer opening of the piston, for slidably engaging with the inner peripheral surface of the cylinder housing, even when the piston is tilted relative to the cylinder housing, and the outer leg of the sealing ring including a flat surface formed in a free end portion thereof and parallel to the base segment thereof, and including an inclined surface formed in the free end portion thereof and formed beside the flat surface thereof,
- The third outlet port of the outlet tube includes an inclined valve seat provided therein, and an inner thread formed therein for threading with a cap, the cap includes a bore formed therein and communicating with the outlet tube and the cylinder housing, for relieving over-pressurized air.
- The relief valve includes a valve element slidably engaged in the outlet tube, and engageable with the valve seat of the outlet tube, and a spring member engaged between the valve element and the cap, for biasing the valve element to engage with the valve seat of the outlet tube.
- Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings.
-
FIG. 1 is an exploded view of a tire inflating combination including an air compressor assembly; -
FIG. 2 is a partial cross sectional view taken along lines 2-2 ofFIG. 1 ; -
FIG. 3 is a partial exploded view of the air compressor assembly for the tire inflating combination; -
FIG. 4 is a partial exploded view of the air compressor assembly; -
FIG. 5 is a partial cross sectional view taken along lines 5-5 of FIG. 3;+ -
FIGS. 6 , 7 are partial cross sectional views similar toFIG. 5 , illustrating the operation of the air compressor assembly; -
FIG. 8 is an enlarged partial plan view of a piston for the air compressor assembly; -
FIG. 9 is an enlarged partial plan view similar toFIG. 8 , illustrating the operation of the air compressor assembly; -
FIG. 10 is a further enlarged partial plan view of the piston for the air compressor assembly; -
FIG. 11 is a top plan view of a sealing ring for the piston of the air compressor assembly; -
FIG. 12 is a partial cross sectional view taken along lines 12-12 ofFIG. 11 ; -
FIG. 13 is a partial cross sectional view taken along lines 13-13 ofFIG. 4 ; -
FIG. 14 is a partial cross sectional view similar toFIG. 13 , illustrating the operation of a safety valve or relief valve for the air compressor assembly; -
FIG. 15 is a partial plan view illustrating a plug for coupling the air compressor assembly to an electric power source; -
FIG. 16 is an enlarged partial plan view illustrating a conductor device of the plug for coupling to the electric power source; and -
FIG. 17 is an enlarged partial cross sectional view of the conductor device of the plug. - Referring to the drawings, and initially to
FIGS. 1 and 2 , atire inflating combination 1 in accordance with the present invention comprises anair compressor assembly 10 for generating pressurized air to pump or to inflatetires 90 or the like. Asealant container 91 may further be provided and coupled between theair compressor assembly 10 and thetire 90, for selectively supplying sealant into thetire 90. - For example, as shown in
FIG. 2 , a bladder or areceptacle 92 is disposed or engaged in thesealant container 91, and includes achamber 93 formed or provided therein for receiving sealant that is provided to be selectively supplied into thetire 90. Thereceptacle 92 includes amouth 94 having a film orcap 95 attached thereto, to enclose or to seal thechamber 93 thereof, and to prevent the sealant from flowing out of thereceptacle 92 of thesealant container 91. - It is preferable that the
mouth 94 of thereceptacle 92 is coupled to theair compressor assembly 10 via acontrol valve 96, which may be selectively opened or actuated to allow the pressurized air generated by theair compressor assembly 10 to flow into themouth 94 of thereceptacle 92 before flowing or supplying into thetire 90. - The pressurized air may force to open the
cap 95, to blow and to supply the sealant into thetire 90. Acheck valve 97 may further be provided and coupled between theair compressor assembly 10 and thesealant container 91 or thereceptacle 92, for limiting the sealant to flow into thetire 90 only, and to prevent the sealant from flowing backward from thetire 90 into thesealant container 91 or thereceptacle 92. - As shown in
FIGS. 3-5 , theair compressor assembly 10 includes abase holder 11, acover 12 attached onto thebase holder 11, to form or define achamber 13 in thebase holder 11 or between thebase holder 11 and thecover 12, and includes amotor 14 disposed in thechamber 13 of thebase holder 11 and having apinion 16 attached to aspindle 15 thereof, for rotating or driving thepinion 16. - A
fan device 17 may further be provided and attached to themotor 14, for being rotated or driven by themotor 14 to generate cooling or heat dissipating air. Acasing 18 may further be provided and disposed in thechamber 13 of thebase holder 11, and agear 19 may be rotated received or engaged in thecasing 18, and engaged with thepinion 16, for allowing thegear 19 to be rotated or driven by themotor 14 via thepinion 16. - A weight or an
eccentric member 20 is attached to thegear 19, and preferably secured to theaxle 21 of thegear 19, and ashaft 22 is attached to theeccentric member 20 and offset from theaxle 21 of thegear 19, such that theshaft 22 is located or arranged eccentrically relative to theeccentric member 20 and theaxle 21 of thegear 19. - A
cylinder housing 25 is also disposed in thechamber 13 of thebase holder 11, and includes achamber 26 formed or provided therein and defined by an innerperipheral surface 27, and includes a passage 28 formed or provided in oneend 29 thereof, for coupling to or for communicating with anoutlet tube 30, the innerperipheral surface 27 is inclined or tilted from the oneend 29 toward the other end or the free end portion of thecylinder housing 25 for forming a frustum-shaped innerperipheral surface 27 and/or a frustum-shaped chamber 26. Theoutlet tube 30 includes anoutlet port 31 formed or provided therein for coupling to thetire 90 or to thesealant container 91 with ahose 98. - The
outlet tube 30 further includes anotheroutlet port 32 formed or provided therein for coupling to a pressure gauge 34 (FIG. 3 ), for example, and further includes afurther outlet port 33 formed or provided therein for coupling to a safety valve, a relief valve 40 (FIGS. 3-4 and 13-14), or the like, for air relieving purposes, and for preventing theoutlet tube 30 and thecylinder housing 25 from being over-pressurized. - For example, as shown in
FIGS. 13-14 , theoutlet port 33 of theoutlet tube 30 includes an inclined peripheral surface orvalve seat 35 formed or provided therein, and includes aninner thread 36 formed or provided in the outer portion thereof for threading with acap 37 which includes abore 38 formed therein and communicating with theoutlet tube 30 and thecylinder housing 25, for allowing over-pressurized air to flow out or to relieve from theoutlet tube 30 and thecylinder housing 25. - The safety valve or
relief valve 40 includes avalve element 41 slidably engaged in theoutlet tube 30, and engageable with the inclined peripheral surface orvalve seat 35 of theoutlet tube 30, for selectively enclosing or blocking theoutlet tube 30, and aspring member 42 engaged between thevalve element 41 and thecap 37, for biasing thevalve element 41 to engage with the inclined peripheral surface orvalve seat 35 of theoutlet tube 30. Thespring member 42 includes a predetermined spring biasing force or resilience to allow air of a predetermined air pressure to flow out through theoutlet tube 30 against thespring member 42. - As shown in
FIGS. 4-12 , apiston 50 is slidably received or engaged in thecylinder housing 25, and coupled to theshaft 22 of theeccentric member 20 or of thegear 19, to allow thepiston 50 to be caused to move or to slide in thecylinder housing 25 in reciprocating action, by themotor 14 via thepinion 16 and thegear 19 and theshaft 22. - The
piston 50 includes apathway 52 formed therein for air flowing purposes, and includes aspring blade 53 attached to top thereof, and arranged to block or to shield thepathway 52 thereof when thepiston 50 is moved toward the passage 28 of thecylinder housing 25 or toward the outlet tube 30 (FIG. 7 ) in a compressing stroke or process. Thespring blade 53 may also be forced to open thepathway 52 of thepiston 50 when thepiston 50 is moved away from the passage 28 of thecylinder housing 25 or away from the outlet tube 30 (FIG. 6 ) in a returning stroke or process. - The
piston 50 further includes aperipheral groove 54 formed in the outer peripheral portion thereof, and defined by a baseperipheral surface 55 and two outwardly opened orinclined side surfaces outer opening 58 in the outer peripheral portion thereof and a narrowerinner recess 59, best shown inFIGS. 8-10 , and further includes asealing ring 60 engaged in theperipheral groove 54 thereof, as shown inFIGS. 4-12 . - As also shown in
FIGS. 8-12 , thesealing ring 60 includes aperipheral channel 61 formed in the upper and middle portion thereof, to form or define a bottom orbase segment 62, aninner leg 63 and anouter leg 64, in which theinner leg 63 is provided in a radially inner portion of thesealing ring 60, for force-fitting in the narrowerinner recess 59 of thepiston 50, and theouter leg 64 is provided in a radially outer portion of thesealing ring 60, for slightly extending out of the widerouter opening 58 of thepiston 50. - For example, the
outer leg 64 of thesealing ring 60 includes aflat surface 65 formed in the outer orfree end portion 66 thereof, and preferably parallel to the bottom orbase segment 62 thereof (FIG. 12 ), and further includes aninclined surface 67 also formed in the outer orfree end portion 66 thereof, and formed beside or adjacent to theflat surface 65 thereof. Theouter leg 64 of thesealing ring 60 is provided for slidably engaging with the inclined or tilted innerperipheral surface 27 of the cylinder housing 25 (FIGS. 5-7 ) and for suitably making an air tight seal between the inclined or tilted innerperipheral surface 27 of thecylinder housing 25 and the sealingring 60 of thepiston 50. - In operation, as shown in
FIGS. 5-7 , when thepiston 50 is forced to move or to slide in thecylinder housing 25 in reciprocating action, by themotor 14 via thepinion 16 and thegear 19 and theshaft 22, thepiston 50 may be slightly inclined or tilted relative to thecylinder housing 25. Theouter leg 64 that is slightly extended out of the widerouter opening 58 of thepiston 50 may be slidably engaged with the innerperipheral surface 27 of thecylinder housing 25, to make a suitable air tight seal between thepiston 50 and thecylinder housing 25 even when thepiston 50 is inclined or tilted relative to thecylinder housing 25. - As shown in FIGS. 3 and 15-17, a coupler or a
plug 70 may further be provided for coupling theair compressor assembly 10 to an electric power source of vehicles (not shown) or the like, to energize theair compressor assembly 10. For example, theplug 70 may be coupled to themotor 14 of theair compressor assembly 10 via anoperating switch 71 which may thus be used to control or to actuate themotor 14 of theair compressor assembly 10. - The
plug 70 includes aplug body 72 having acentral electrode 73 provided or disposed therein, and a case orperipheral electrode 74 attached to theplug body 72 and having two ormore conductor arms 75 provided thereon or extended therefrom, for allowing thecentral electrode 73 and theconductor arms 75 of the case orperipheral electrode 74 to be suitably coupled to the electric power source of the vehicles or the like. - Accordingly, the air compressor in accordance with the present invention includes an improved sealing ring for facilitating a sliding engagement between a piston and a cylinder housing which includes an inclined inner peripheral surface, and for suitably making an air tight seal between the cylinder housing and the piston.
- Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
Claims (10)
1. An air compressor assembly comprising:
a cylinder housing including a chamber formed therein and defined by an inner peripheral surface, said inner peripheral surface of said cylinder housing being tilted from one end to the other to form a frustum-shaped chamber,
a piston slidably engaged in said cylinder housing, said piston including an outer peripheral groove formed therein and defined by a base peripheral surface and two side surfaces, to form an outer opening and an inner recess,
a motor for coupling to said piston, to move said piston in said cylinder housing in reciprocating action, and
a sealing ring engaged in said outer peripheral groove of said piston, for slidably engaging with said tilted inner peripheral surface of said cylinder housing, and for making an air tight seal between said cylinder housing and said piston,
said sealing ring including a peripheral channel formed in an upper portion thereof, to form a base segment, an inner leg and an outer leg, said inner leg being engaged in said inner recess of said piston, and said outer leg being extended out of said outer opening of said piston, for slidably engaging with said tilted inner peripheral surface of said cylinder housing, even when said piston is tilted relative to said cylinder housing.
2. The air compressor assembly as claimed in claim 1 , wherein said outer leg of said sealing ring includes a flat surface formed in a free end portion thereof, and parallel to said base segment thereof.
3. The air compressor assembly as claimed in claim 2 , wherein said outer leg of said sealing ring includes an inclined surface formed in said free end portion thereof, and formed beside said flat surface thereof.
4. The air compressor assembly as claimed in claim 1 , wherein said piston includes a pathway formed therein for air flowing purposes, and includes a spring blade attached to block said pathway thereof when said piston is moved relative to said cylinder housing in a compressing stroke, said spring blade is forced to open said pathway of said piston when said piston is moved relative to said cylinder housing in a returning stroke.
5. The air compressor assembly as claimed in claim 1 , wherein said motor includes a spindle having a pinion attached thereto, a gear rotatably engaged with said pinion, for allowing said gear to be rotated and driven by said motor via said pinion, an eccentric member attached to said gear, and a shaft attached to said eccentric member and offset from an axle of said gear, and coupled to said piston via a piston rod.
6. The air compressor assembly as claimed in claim 5 , wherein said motor includes a fan device attached thereto and rotated and driven by said motor to generate cooling air.
7. The air compressor assembly as claimed in claim 5 further comprising a base holder, a casing disposed in base holder, and said gear is rotatably received and engaged in said casing, and engaged with said pinion.
8. The air compressor assembly as claimed in claim 1 , wherein said cylinder housing includes an outlet tube provided thereon, and passage formed therein and communicating with said outlet tube, said outlet tube includes a first outlet port formed therein for coupling to a hose, a second outlet port provided therein for coupling to a pressure gauge, and a third outlet port provided therein for coupling to a relief valve.
9. The air compressor assembly as claimed in claim 8 , wherein said third outlet port of said outlet tube includes an inclined valve seat provided therein, and an inner thread formed therein for threading with a cap, said cap includes a bore formed therein and communicating with said outlet tube and said cylinder housing, for relieving over-pressurized air.
10. The air compressor assembly as claimed in claim 9 , wherein said relief valve includes a valve element slidably engaged in said outlet tube, and engageable with said valve seat of said outlet tube, and a spring member engaged between said valve element and said cap, for biasing said valve element to engage with said valve seat of said outlet tube.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/070,411 US20080145245A1 (en) | 2004-12-22 | 2008-02-19 | Compressor for tire inflating combination |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/022,349 US20050191193A1 (en) | 2004-02-29 | 2004-12-22 | Air compressor for tire inflating combination |
US12/070,411 US20080145245A1 (en) | 2004-12-22 | 2008-02-19 | Compressor for tire inflating combination |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/022,349 Continuation-In-Part US20050191193A1 (en) | 2004-02-29 | 2004-12-22 | Air compressor for tire inflating combination |
Publications (1)
Publication Number | Publication Date |
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US20080145245A1 true US20080145245A1 (en) | 2008-06-19 |
Family
ID=39527468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/070,411 Abandoned US20080145245A1 (en) | 2004-12-22 | 2008-02-19 | Compressor for tire inflating combination |
Country Status (1)
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US (1) | US20080145245A1 (en) |
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