COLLAPSIBLE GOLF TROLLEY
The present invention relates to a collapsible golf trolley for use with a golf bag. The present invention also relates to a golf bag having an integral collapsible trolley arrangement .
Golf trolleys have been known for many years to allow a golfer to transport his clubs around a golf course and generally comprise a frame assembly for supporting a golf bag and clubs. a pair of spaced apart wheels and a handle. Golf trolleys of this type will be generally known to golfers and to those skilled in the art.
A particular disadvantage with known types of golf trolley is that they are generally quite cumbersome and do not lend themselves to convenient storage or transportation and it has therefore become known to design collapsible golf trolleys which are either collapsible separately from the golf bag or are formed and arranged with the golf bag so as to be collapsible with a golf trolley still engaged with the golf bag in use of the collapsible golf trolley. Examples of collapsible golf trolleys are those described in United States Patent No. 5439241 (Nelson); EP-A-0160575 (Carolan) ; US 5454576 (Pitkanen) ; WO92/18206 (Rao) ; and US 4062564 (Schimmeyer) .
A further particular disadvantage of known collapsible golf trolleys is that even in a collapsed condition the wheels of the trolley tend to protrude outwardly of the golf bag and such designs do not lend themselves to storage, in for example a golfer' s car or to be carried as luggage when travelling by air, for example. This problem has been further exacerbated
in recent years by the requirement of most golf clubs and golf courses to use golf trolleys having a more or less wide wheel, typically 75mm or more, so as to reduce as far is as reasonably practicable, any damage to golf courses caused by the passage of golf trolleys thereover.
What the inventor of the present invention has realised for the first time is that by stowing the wheels of the trolley in nesting interengagement, one on top of the other, either immediately under a golf bag so that the axes of the wheels is generally coaxial with the axis of the golf bag or against the side of the golf bag such that the axes of the wheels is perpendicular to the longitudinal axis of the golf bag, it is possible to achieve a substantially improved means of providing a highly compact collapsible golf trolley.
In a first respect the present invention provides a collapsible golf trolley for use with a golf bag which trolley comprises a golf bag support frame assembly formed and arranged for receiving the base portion of a said golf bag and two wheel mounting means spaced apart on the underside of said frame assembly for supporting a pair of wheels in a first deployed condition on either side of a said golf bag in use of the trolley, characterised in that said wheels are basin shaped and said basin shaped wheels in said deployed condition have a common rotational axis generally perpendicular with the longitudinal axis of a said golf bag supported on said bag support frame assembly; said wheel mounting means and support frame being further formed and arranged so as to permit transposition of said basin shaped wheels to a stowed position in a collapsed condition of the trolley with said basin shaped wheels in nesting interengagement one on top of each other
against the side of a said golf bag or said support frame assembly with the rotational axis of said wheels when in nesting interengagement being generally perpendicular with the longitudinal axis of a said golf bag supported on said support frame assembly whereby the wheels of the trolley may be stowed against the side of a golf bag in use of the trolley in a substantially collapsed condition.
In another respect the present invention provides a collapsible golf trolley for use with a golf bag which trolley comprises a golf bag support frame assembly formed and arranged for receiving the base portion of a said golf bag and two wheel mounting means spaced apart on opposite sides of said frame assembly for supporting a pair of wheels preferably basin shaped wheels in a first deployed condition on either side of a said golf bag in use of the trolley, said wheels in said deployed condition having a common rotational axis generally perpendicular with the longitudinal axis of a said golf bag supported on said bag support frame assembly; said wheel mounting means and support frame being further formed and arranged so as to permit transposition of said wheels to a stowed position in a collapsed condition of the trolley under said support frame assembly with the rotational axis of each said wheel being generally coaxial with the longitudinal axis of a said golf bag supported on said bag support frame assembly and preferably with said basin shaped wheels in nesting interengagement one on top of each other whereby the wheels of the trolley may be stowed under the base of a golf bag in use of the trolley into a substantially collapsed condition.
Thus with a collapsible golf trolley according to either aspects of the present invention it is possible to stow the wheels of the trolley in a substantially more compact and convenient way than has been hitherto possible with existing designs of collapsible golf trolley.
In one respect said transposition of said wheels from said first deployed condition to said stowed collapsed condition is preferably effected by said wheels being formed and arranged with said wheel mounting means so as to be releasable therefrom and connectable to the underside of said golf bag support frame assembly with the rotational axis of each said wheel being generally coaxial with the longitudinal axis of a said golf bag supported on said bag support frame assembly or against the side of said golf bag support frame assembly with the rotational axis of each said wheel being generally perpendicular with the longitudinal axis of a said golf bag.
Alternatively and according to a second respect said transposition of said wheels from said first deployed condition to said second stowed collapsed position is preferably effected by said wheel mounting means being hingedly formed and arranged with said golf bag support frame assembly so that said wheels may be folded from said first deployed condition into said second stowed collapsed condition under said support frame assembly with the rotational axis of each said wheel being generally coaxial with the longitudinal axis of a said golf bag supported by said bag support frame assembly or against the side of said golf bag support frame assembly with the wheels in nesting inter-engagement, one on top of each other, with the rotational axis of the wheels being generally perpendicular with the longitudinal axis of
said golf bag. Preferably said hinges formed and arranged to facilitate said transposition between said positions are provided with locking means for locking said wheel support means with said wheels in said respective deployed and stowed positions .
Preferably said wheels have a basin type appearance with a width of approximately 70-80mm wherein the base of said basin shaped wheel is mounted via suitable bearing means to said wheel support means.
Preferably said wheels have a diameter in the range of 200 to 240mm desirably 220mm i.e. approximately the same diameter as a conventional sized golf bag so that when in said stowed position underneath a golf bag supported by said bag support frame assembly said wheels are substantially in register with the body of a said golf bag in use of the trolley.
Preferably said basin shaped wheels have very slightly different diameters and are formed and arranged for nesting inter-engagement one on top of each other or one inside the other so as to significantly improve the collapsibility of the golf trolley according to one aspect of the present invention.
Preferably there is provided on either aspects of the invention an elongate handle means having a grip portion at one end for engagement by a golfer's hand and a second end formed and arranged for connection with said bag support frame assembly. Desirably there is provided at a medial portion on said elongate handle means, means for securing the top portion of a bag supported in said golf bag support frame assembly to said handle means . Suitable fastening means may include a
strap having a hook and loop type fastener or a buckle arrangement. Preferably said elongate handle means is formed and arranged with said bag support frame assembly so as to be adjustable in length so as to facilitate use on, for example ladies' or gent's golf club bags, children's golf bags or golfers of above average or below average height.
Said common rotational axis may cross generally perpendicularly with said longitudinal axis of a said golf bag supported by said bag support frame assembly though preferably said common rotational axis is spaced apart perpendicularly with respect to said longitudinal axis of a said golf bag supported on said bag support frame assembly such that said rotational axis is proximal to or intersects a notional line equivalent to a vertical line defined by the centre of gravity of the golf bag in use of the golf trolley according to the invention and enclosed golf clubs, golf balls etc. so that in use a golf bag and golf clubs supported by the golf trolley according to the invention may be free standing. Preferably said elongate handle means is formed and arranged to pass through and extend from the base portion of said bag support frame assembly so as to act as an end stop support for a golf bag in an inclined free standing position of said golf trolley according to the invention.
Preferably the component parts of the golf trolley invention are made of more or less tough and robust materials such as for example polypropylene plastics or lightweight metal alloys .
In another respect the present invention provides a wheeled golf bag which includes two wheel mounting means spaced apart
on opposite sides of the base portion of the golf bag for supporting a pair of wheels, preferably basin shaped wheels, in a first deployed condition on either side of said golf bag, said wheels in said deployed condition having a common rotational axis generally perpendicular with the longitudinal axis of said golf bag; said wheel mounting means being formed and arranged so as to permit transposition of said wheels to a stowed position in a collapsed condition under said golf bag with the rotational axis of each said wheel being generally coaxial with the longitudinal axis of the golf bag.
Preferably there is provided a handle means desirably an adjustable length handle means, extending from the top of said golf bag.
Preferably the wheels of said golf bag are formed and arranged for nesting inter-engagement substantially in register with the body of said golf bag.
In yet a further respect the present invention provides a wheeled golf bag which includes two wheel mounting means spaced apart on opposite sides of the base portion of the golf bag for supporting a pair of wheels in a first deployed condition on either side of said golf bag, characterised in that said wheels are basin shaped and in said deployed condition have a common rotational axis generally perpendicular with the longitudinal axis of said golf bag; said wheel mounting means being formed and arranged to permit transposition of said wheels to a stowed position in a collapsed condition against the side of said golf bag with said basin shaped wheels in nesting interengagement one on top of each other with the rotational axis of said wheels when in
nesting interengagement being generally perpendicular with the longitudinal axis of the golf bag.
For the avoidance of doubt where the wheels are in nesting interengagement one on top of each other or indeed one inside the other with the rotational axis of the wheels being generally perpendicular with the longitudinal axis of the said golf bag, the longitudinal axis of the golf bag intersects a notional line extending from the rotational axis of the wheels with the wheels themselves being spaced apart from the longitudinal axis of the golf bag.
Further preferred features and advantages of the present invention will appear from the following detailed description given by way of example of some preferred embodiments illustrated with reference to the accompanying drawings in which : -
Fig. 1 is a side view of a golf bag supported by a collapsible golf trolley according to one aspect of the invention; Fig. 2 is a rear view of the golf trolley shown in Fig. 1; Fig. 3 is a side view of the golf trolley according to the invention with the wheels in a stowed condition; Fig. 4 is a plan view of a golf bag supported by a collapsible golf trolley according to a second aspect of the invention; Fig. 5 a - f show the sequence of movements required to move the wheels from the stowed condition shown in Fig. 4 to a deployed condition; and
Fig. 6 is a perspective view of a collapsible golf trolley similar to that shown in Figs. 4 & 5 with the wheels in a stowed condition against the side front of a golf bag (not shown) .
A collapsible golf trolley, generally indicated by reference number 1, is shown in Fig. 1. The golf trolley 1 comprises a golf bag 2 support frame assembly 4 secured to the base portion 6 of the golf bag 2. Two wheel mounting assemblies 8,10 are spaced apart on opposite sides of the frame assembly for supporting a pair of basin shaped wheels 12 in the deployed condition shown on either side of the golf bag 2. The wheels 12 when in the shown deployed condition have a common rotational axis (shown by letter 'A') which is perpendicular with the longitudinal axis of the golf bag supported on the bag support frame assembly (shown by broken axis line 'B') . The wheel mounting assemblies 8,10 are arranged with the bag support frame assembly 4 so that the wheels 12 may be folded into a stowed collapsed condition immediately under the support frame assembly 4 (see Fig. 3) such that the rotational axis of each wheel 12 is generally coaxial with the longitudinal axis (shown by broken axis line 'C in Fig. 3) of the golf bag 2 supported by the bag support frame assembly 4. As shown in Fig. 3 the wheels 12 nest one upon each other and are substantially in register with the body of the golf bag 2.
By nesting the basin shaped wheels 12 one on top of the other and placing them immediately underneath the golf bag support frame assembly it is possible to achieve a highly compact collapsible golf trolley.
In more detail and as shown in Figs. 1 and 2 the wheel mounting assemblies 8,10 comprise two spaced apart elongate and parallel leg members 14,16 which are secured to the side of the bag support frame assembly by a locking mechanism 18 shown in more detail in enlargement Fig. 3a. The left hand
wheel 12a is mounted, via a bearing, to an 'L' shaped bracket
20 which is hingedly 22 connected to the left one 14 of the spaced apart legs. The hinge mechanism 22 on the hinge connection is a arranged to lock the wheel in its first deployed condition (as shown in Figs. 1 and 2) and to hinge through 90° (arrow 'D') to the deployed folded condition shown in Fig. 3. The right hand wheel is mounted via a bearing to a similar 'L' shaped bracket 24 which is hingedly 26 secured to the right hand leg 16. To facilitate the nesting inter- engagement of the wheels 12a, b one on top of each other as shown in Fig. 3 the right hand 'L' shaped bracket 24 is provided with a swivel joint 28 adjacent to the bend in the ' ' shaped bracket so that the right hand wheel may be swivelled through 180° (in a notional plane arrow 'E') so as to nest upon the left hand wheel as shown in Fig. 3.
An elongate handle 30 is provided having a grip portion 32 for use by a golfer' s hand at one end and at the other end 34 is connected to and passes through the bag support frame assembly 4 so as to provide a base end stop 36 so that the golf trolley and associated golf clubs 38 and golf bag 2 may stand in the free standing position shown in Fig. 1. The handle 30 is adjustable in length (arrow 'F') to suit different types of golf bags and is provided with an adjustable strap 40 having a hook and loop type fastener 42 for fastening the upper portion 44 of the golf bag 2 to the handle 30. When it is required to collapse the golf trolley 1 the handle 30 is removed and stowed inside the golf bag 2 along with the golf clubs. Optionally there may be provided strut members (not shown) which extend between the handle and the wheel mounting assemblies for increased stiffness of the trolley.
The golf bag support frame assembly 4 is secured to the base of the golf bag by nuts and bolts, though it will be appreciated that other fastening means may be used.
As shown in Fig. 3a which shows an enlargement of the locking mechanism shown in Fig. 1 to Fig. 3, both the right hand and left hand legs are able to slide up and down relative to the golf bag to allow the left hand wheel to be folded into position and pushed up against the base of the bag support frame assembly and then for the right hand wheel to be rotated backwardly and slid downwards and to have its wheel 12b swivelled through 180° and then pushed back up in to nesting inter-engagement with the left hand wheel 12a. The locking mechanism 18 shown comprises a pair of washers 42,44 having a castellated surface which when brought together by the cam 46 operated locking mechanism fixes the wheel relative the golf bag at the required angle (as shown in Fig. 1) .
To collapse the golf trolley from the deployed condition shown in Fig. 1 to the collapsed stowed condition shown in Fig. 3 the following steps are undertaken : -
Release the left hand locking mechanism 18 so as to free the left hand wheel 12a so that it can swing back and so that the left hand leg portion of the wheel support assembly 4 is parallel with the axis 'C' of the golf bag; unlock the left hand hinge mechanism 22 so that the left hand wheel 12a can hinge through 90° and be stowed with its axis of rotation generally co-axial with the longitudinal axis of the golf bag; slide the left hand leg 14 up so that the left hand wheel 12a abuts against abutment blocks 48 on the base of the bag support frame assembly 4; operate left hand locking mechanism
18a so as to lock the left hand wheel 12a in its locked stowed position; release right hand locking mechanism 18b; release swivel joint 28 and swivel right hand wheel 12b through 180°; unlock right hand hinge 24 and fold through 90° the right hand 'L' shaped bracket and push right hand wheel 12b into nesting inter-engagement with the already stowed left hand wheel 12a; and operate right hand locking mechanism 18b so as to lock wheels together.
As shown in the collapsed condition shown in Fig . 3 the bag support frame assembly is provided with two spaced apart 'U' shaped retaining clips 50 on the base portion for engaging with the respective left and right legs. The purpose of these is to hold the wheels substantially and register with the golf bag when in a stowed condition.
Figs. 4 to 6 show a second embodiment of the invention generally similar to that shown in Figs. 1 to 3 except that instead of the wheels being mounted in nesting interengagement underneath the golf bag in use of the assembly, the wheels, in nesting interengagement one on top of each other, are mounted against the front of the golf bag in use of the collapsible golf trolley, and are indicated by the same reference numbers used above in relation to Figs 1 to 3.
In more detail and as shown in Figs 4 to 6 the wheel mounting assemblies 8, 10 comprise two spaced apart elongate and parallel support members 14, 16 which are secured to the side of the bag support frame assembly 4. The left hand wheel 12a is mounted, via a bearing, to an "L" shaped bracket 20 which is hingedly 22 connected to the left one 14 of the spaced apart members. The hinge mechanism on the hinge connection is
arranged to lock the wheel in its first deployed condition and to hinge through 90° (arrow D) to the deployed folded condition shown in Fig 5b. The right hand wheel 12b is mounted via a bearing to a similar "L" shaped bracket 24 which is hingedly secured to the right hand member 16 to facilitate the nesting interengagement of the wheels 12a, b one on top of each other as shown in Fig . 4. The right hand "L" shaped bracket 24 is provided with a swivel joint 28 adjacent to the bend in the L shaped bracket so that the right hand wheel may be swivelled through 180° (in a notional plane arrow W) (Fig.
5c_) so as to nest upon the left hand wheel as shown in Fig. 4.
A telescopically extensible handle 27 is provided on the centre portion of the bag support frame assembly 4.
To erect the golf trolley from the stowed condition shown in Fig. 4 to the deployed condition similar to the embodiment shown in Fig. 1 the following steps are undertaken and with reference to figures 4, 5a to 5f_: - The right hand wheel 12b has an outside diameter just slightly smaller than the internal diameter of the left hand wheel 12a^ and as shown in Fig. 4 the right hand wheel nests inside the left hand wheel 12a. A user (not shown) pulls the right hand wheel in the direction of arrow S' so as to draw the right support member 16 telescopically outwards of the support frame assembly 4 (see Fig. 5a) . The right hand wheel 12a is then hinged about hinge 26 (in the direction of arrow D) as shown in figure 5b so that the right hand wheel is at right angles to the still stowed left hand wheel at 12a. Turning now to Fig. 5c the right hand wheel 12b, being mounted on a swivel joint 28 is then rotated through 180° (in the direction of arrow W - see Fig 5b and £) . The right hand wheel and right hand support member 16 is then pushed in the direction of
arrow ΛT' inwardly into the body of the bag support frame assembly 4 (see Fig. 5d) . The right hand wheel is now in a deployed condition.
To deploy the left hand wheel 12a, the left hand wheel and its support member 14 are slidably withdrawn from the bag support frame assembly in the direction of arrow 'V (Fig. 5e) so as to be in an extended position. The wheel mounting assembly and the left hand wheel 12a are then pivoted through 90° about the hinge 22 on the support member 14 (shown in the direction of arrow X - see Fig. 5f_) so as to place the left hand wheel 12a in a deployed condition. The collapsible golf trolley is now ready for use .
To collapse the golf trolley from the deployed condition shown in Fig. 1 to the collapsed stowed position shown in Fig. 4/Fig. 6 the above noted steps are undertaken in reverse order.
Fig. 6 shows a further embodiment of the invention generally similar to that described above with reference to Figs . 4 and 5a to f_ but with a slightly different arrangement of support members. In this embodiment the wheels are mounted, in nesting interengagement one on top of each other, against the front of a golf bag (shown in broken lines) . This embodiment allows the wheels to be stowed in nesting interengagement alternatively against the underside of the bag or against the back of the bag as required by a user. The handle is a folding arrangement.
Various modifications may be made to the above described embodiments without departing from the scope of the present
invention. Thus for example instead of there being provided a more or less bucket shaped bag support frame assembly there may be provided a more or less 'U' shaped frame which is attached to each side of a golf bag using suitable fastening means and on which the wheel supporting assemblies are mounted. Furthermore it will be appreciated that once the general principle of stowing both the wheels, preferably basin shaped wheels in nesting inter-engagement one on top of each other, on a collapsible golf trolley immediately under it so that the rotational axis is generally perpendicular with a longitudinal axis of the golf trolley or against the side of a golf bag with the basin shaped wheels in nesting interengagement, one on top of each other with the rotational axis of the wheels being perpendicular with the longitudinal axis of the golf bag, it is possible to consider various different ways of achieving this.