JP4172756B2 - Car seat floor lock device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a floor lock device for fixing a vehicle seat to a floor, and more particularly to an improvement in a structure for fixing a flip-up seat.
[0002]
[Prior art]
In some automobile seats, a seat back of a rear seat (second seat or third seat) is tilted forward and the seat is lifted to form a luggage compartment. In such a seat, a seat reclining device and a floor lock device for fixing the seat to the floor are generally operated by separate operations. For this reason, since each lock release lever is provided separately, the number of operations is increased, and there are many cases in which the lever is mistakenly operated, resulting in poor usability.
[0003]
In recent years, a reclining device linked with a floor lock mechanism has been provided. In this floor lock mechanism, the lock of the floor lock mechanism is released when the seat back is tilted forward, and the floor lock mechanism is locked when the seat back is raised.
[0004]
[Problems to be solved by the invention]
However, in the floor lock device as described above, if the seat back is tilted forward, the lock of the floor lock mechanism remains unlocked, so that the seat becomes unstable during traveling and is unusable. was there. For example, when loading a long baggage, it is often performed to lean the seat back forward and lean the baggage there. When the vehicle is run in such a state, the luggage may bounce with the seat.
An object of the present invention is to provide a vehicle seat floor lock device that can fix a seat to a floor even when the seat back is tilted forward, and thus can stabilize the seat during traveling. .
[0005]
[Means for Solving the Problems]
The vehicle seat floor lock device of the present invention is a vehicle in which a seat including a seat portion and a backrest portion that is pivotally connected to the seat portion via a reclining mechanism is detachably fixed to the floor of the vehicle. A floor lock device for a seat, wherein a crow is detachably engaged with a striker provided on the floor, and the crow is engaged with the crow, thereby maintaining the state where the crow is engaged with the striker. A rotatable stopper, and by rotating, presses a pin provided on the stopper to rotate the stopper, thereby releasing the engagement state between the stopper and the claw, and then the stopper an arm away from said backrest conjunction with cable drawn is connected before tilting operation of, rotatably the arm portion where the cable is connected And a lever for supporting, in a state in which the arm has the pressing of the pin, the arm and the direction of the pressing against said lever, characterized in that contact with the member for restricting the rotation in the opposite direction .
[0006]
In the floor lock device having the above-described configuration, the engagement between the engagement portion and the fixture is released by tilting the backrest portion forward by a predetermined angle from the raised state. Therefore, the engaging portion can be detached from the fixture by lifting the seating portion. In this state, even if the backrest portion is further tilted forward, the engaging portion is not engaged with the fixture, so that the seat can be lifted up. Further, when the engaging portion (sitting portion) is lowered, the engaging portion is driven by the fixing tool and is engaged with the fixing tool to fix the seat. Therefore, even if the vehicle travels with the backrest part tilted forward, the seat does not bounce, and the luggage placed thereon can be stabilized.
[0007]
Here, a first elastic member that urges the engaging portion upward is provided, and the first elastic member moves the engaging portion from the fixing tool when the engagement between the engaging portion and the fixing tool is released. It is preferable to disengage upward. With such a configuration, it is possible to eliminate the inconvenience that the engaging portion re-engages with the fixture due to the weight of the sheet.
[0008]
In addition, it is desirable that the engaging portion is constituted by a rotatable claw, and the configuration is simple, and it is desirable that the claw is urged in a direction to release the engagement of the fixture. As the urging means of the crow, an elastic member such as a spring or the weight of the crow can be used. In addition, the drive mechanism includes a rotatable stopper that maintains a state where the engaging portion is engaged with the fixture by engaging with the crow, and a stopper that rotates the stopper in conjunction with the forward tilting operation of the backrest portion. And a stopper driving member for releasing the engagement state between the crowbar and the crow. In addition, the crow includes a pressing portion that faces the fixing tool when the engaging state with the fixing tool is released, and the fixing tool presses the pressing part to engage the crow with the fixing tool. It is suitable if it is configured to rotate to the state.
[0009]
It is desirable that the stopper and the crow are urged by the second elastic member in a direction in which their one end portions approach each other. That is, by rotating the stopper, the engagement state with the crow is released, and thereby, one end of the crow is rotated to the stopper side by the urging force of the second elastic member, and thereby the engagement state with the fixture. Is configured to be released. According to such a configuration, since the stopper and the crow are urged by one second elastic member, the number of parts can be reduced.
[0010]
The stopper driving member includes an arm portion that rotates in conjunction with the forward tilting operation of the backrest portion, and this arm portion rotates to press the convex portion provided on the stopper to rotate the stopper. When the engagement with the crow is released, and when rotating in the opposite direction to the above, it is preferable that the structure is configured so as to avoid the interference with the convex portion by being rotated without being restrained by the operation of the backrest portion. It is. More specifically, the arm portion is composed of a lever that is interlocked with the operation of the backrest portion and an arm that is rotatably provided on the lever. That is, when the lever is rotated together with the arm and the convex portion is rotated by the arm and the arm passes through the convex portion and then the lever is rotated in the reverse direction, the arm rotates and passes through the convex portion. Like that. Thereby, an arm part can return to an original state smoothly.
[0011]
The structure which rotates an arm part in conjunction with operation | movement of a backrest part is arbitrary. For example, the structure which connects a backrest part and an arm part with a link can be used. In this configuration, the rotation of the arm portion in the forward / reverse direction is forced by the backrest portion. Alternatively, the backrest and the arm are connected by a strip such as a pull cable in which the inner cable is slidably inserted inside the outer cable, and the arm is inserted through the strip when the backrest is tilted forward. The arm portion can be configured to be pulled and thereby rotated.
[0012]
In this case, it is desirable to provide means for urging the arm portion in a direction opposite to the direction in which the arm portion is pulled by the strip. The floor lock device of the present invention is preferably provided on both sides of the seating portion because the locked state is stabilized. In this case, the arm part is connected to each of the hinges on both sides of the backrest part and the seating part via the strip. Here, when it is necessary to connect the pull cable to the arm portion from the front, it is preferable to arrange the pull cables so as to cross each other. That is, the pull cable connected to the left hinge is diverted forward and connected to the right arm, and the pull cable connected to the right hinge is diverted forward and connected to the left arm. With such a configuration, the pull cable can be arranged with a large curvature radius, and the inner cable can be operated smoothly.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
A. Configuration of Embodiment An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram illustrating a main part of the floor lock device of the embodiment. In the figure, reference numeral 10 denotes a seat bracket (seat) fixed to the seat cushion C, and constitutes the main body of the floor lock device of this embodiment. Bolt holes 18 are formed in the seating bracket 10, and the seating bracket 10 is attached to the seat cushion C with bolts (not shown) that penetrate the bolt holes 18. A back bracket (backrest portion) 13 to which a seat back B (see FIG. 4) is attached is supported on the upper end portion of the seating portion bracket 10 via a hinge mechanism 12 so as to be rotatable. Such a hinge mechanism 12 is provided on both sides of the back bracket 13, and a reclining mechanism (not shown) capable of arbitrarily setting and fixing the angle of the back bracket 13 with respect to the seat bracket 10 on one of them. Is provided. Note that the seat back B is tilted forward to the left in FIG. 1, and the traveling direction of the automobile is the left side. The seat cushion C is rotatably supported at its front end by a shaft 11 (see FIG. 4), and is urged counterclockwise in FIG. 4 by a spring (first elastic member) (not shown). .
[0014]
A pin 14 is attached to the back bracket 13 so as to protrude in the left-right direction (the direction perpendicular to the paper surface in FIG. 1). On the other hand, the lever 15 is rotatably supported by the hinge mechanism 12, and when the back bracket 13 rotates, the pin 14 presses and rotates one end of the lever 15. Reference numeral 16 in the drawing denotes a pull cable 16 in which an inner cable 16b is slidably inserted into an outer cable 16a. Reference numeral 20 in the drawing denotes a drive mechanism, and the drive mechanism 20 is disposed on both sides of the seat bracket 10. The end of the inner cable 16 b is fixed to one end of the lever 15. The pull cable 16 is disposed so as to bypass the front of the seat bracket 10 and is connected to a lock mechanism 20 disposed on the opposite side of the lever 15. Hereinafter, the details of the lock mechanism 20 will be described with reference to FIGS. 2 and 3.
[0015]
2 and 3, reference numeral 21 denotes a base plate, and a cover 22 whose center portion bulges in the plate thickness direction is fixed to the base plate 21. Between the base plate 21 and the cover 22, a claw (engaging portion) 23 is rotatably supported by a shaft 24. One end portion of the claw 23 is formed with a flange portion 23a that is detachably engaged with a striker S (see FIG. 5) fixed to the floor of the automobile. Further, a recess 23 b is formed on the left side surface of the claw 23. Further, a pin 23 c is fixed to the other end portion of the claw 23.
[0016]
Further, a stopper 25 facing the claw 23 is rotatably supported by a shaft 26 between the base plate 21 and the cover 22. On the right side surface of the stopper 25, a convex portion 25b that engages with the concave portion 23b of the claw 23 is formed. A pin (convex portion) 25 a and a pin 25 c are fixed to the end portion of the stopper 25. A coil spring (second elastic member) 27 is attached to the pin 25c and the pin 23c of the crow 23, and both are pulled in the direction of each other.
[0017]
Next, on the surface of the cover 22, a lever 30 is rotatably supported by a shaft 31. The lever 30 is biased counterclockwise by a coil spring 32. A stopper 33 is disposed below the lever 30 and restricts the rotation of the lever 30 in the counterclockwise direction. At one end of the lever 30, an arm 34 is rotatably supported by a shaft 35. The rotation of the arm 34 in the counterclockwise direction is regulated by the body portion of the stopper 33. A torsion coil spring 36 is attached to the middle portion in the longitudinal direction of the arm 34 and the other end portion of the lever 30 and is stretched in a direction to separate them from each other.
[0018]
As shown in FIG. 2, a bracket 37 is fixed to the surface of the cover 22, and the end of the pull cable 16 (outer cable 16 a) is attached to the bracket 37. The inner cable 16b protrudes from the end portion of the outer cable 16a, and the end portion is attached to the shaft 35 of the arm 34 by a metal fitting 38 such as an E ring. A bracket 39 is installed on the shafts 24 and 26 protruding from the surface of the cover 22, and a rubber 40 compressed by the striker S is fixed to an intermediate portion of the bracket 39. In addition, the code | symbol 41 is a bolt hole for attaching the locking mechanism 20 to the seat cushion C.
[0019]
B. Operation of Embodiment Next, the operation of the floor lock device having the above-described configuration will be described with reference to FIGS. In FIGS. 5 and 6, the cover 22 is not shown for easy understanding of the operation of each part. 4 (A) and 5 (A) show a state in which the seat back B is raised and the claw 23 is engaged with the striker S. FIG. In this state, the seat is fixed to the floor. When the recliner mechanism is operated and the back bracket 13 is tilted forward, the pin 14 rotates and presses the end of the lever 15 as shown in FIG. Thereby, the lever 15 rotates counterclockwise and the inner cable 15b is pulled out. As a result, the inner cable 16b is drawn into the outer cable 16a in the lock mechanism 20, and the lever 30 rotates clockwise.
[0020]
FIG. 5B shows a state where the arm 34 is rotated together with the lever 30 and is in contact with the pin 25a of the stopper 25, and a two-dot chain line in FIG. 4B shows the position of the seat back B at that time. When the seat back B is further tilted forward as shown in FIG. 4C from this state, the arm 34 pushes up the pin 25a as shown in FIG. 5C, and the stopper 25 rotates counterclockwise in the figure. Move. Thereby, the convex part 25b of the stopper 25 detach | leaves from the recessed part 23b of the claw 23, and both engagement state is cancelled | released. Then, due to the urging force of the coil spring 27, the claw 23 rotates counterclockwise in the figure, and the collar portion 23 a of the claw 23 is detached from the striker S. At this time, the rear end portion of the seat cushion C is lifted by the pressing portion 23c on the opposite side of the collar portion 23a and the rubber 40 pressing the striker S and the urging force of the spring (first elastic member), and the locking mechanism 20 rises completely from the striker S.
[0021]
Next, as shown in FIG. 4D, by raising the seat cushion C, the space of the rear seat can be used for loading. The lock mechanism 20 at that time is in the state shown in FIG. Next, as shown in FIG. 4E, when the seat cushion C is tilted backward and the rear end portion is pressed, the striker S pushes up the pressing portion 23c of the claw 23 and rotates the claw 23 clockwise. . Thereby, as shown in FIG. 6E, the convex portion 25 b of the stopper 25 engages with the concave portion 23 b of the claw 23.
[0022]
Next, as shown in FIG. 4 (F), when the seat back B is raised, the lever 15 becomes free, so that the lever 30 is moved from the state shown in FIG. 6 (E) by the biasing force of the coil spring 32 shown in FIG. It rotates counterclockwise. When the distal end of the arm 34 comes into contact with the pin 25a of the stopper 25, the arm 34 rotates clockwise as shown by a two-dot chain line in the figure, and passes through the pin 25a. As a result, the state shown in FIG.
[0023]
In the floor lock device having the above-described configuration, when the seat back B is tilted forward by a predetermined angle, the engagement between the claw 23 and the striker S is released, and the claw 23 is lifted by a spring (first elastic member) or the like. And is released from the striker S. In this state, even if the seat back B is tilted further forward, the claw 23 does not engage with the striker S, so that the seat can be flipped up. When the seat cushion C is pushed down against the urging force of the spring, the crow 23 is driven by the striker S and engages with the striker S to fix the seat. Therefore, even if the vehicle travels with the seat back B tilted forward, the seat does not bounce, and the load placed thereon can be stabilized.
[0024]
In particular, in the above embodiment, since the stopper 25 and the claw 23 are urged by the coil spring 27 in a direction in which their one end portions approach each other, the stopper 25 and the claw 23 are urged by one coil spring 27. The number of parts can be reduced. Further, since the arm 34 is rotatable with respect to the lever 30, when the seat back B is raised, the arm 34 passes through the pin 25a of the stopper 25, so that the arm 34 and the lever 30 return to the original state smoothly. Can do.
[0025]
【The invention's effect】
As described above, according to the present invention, the drive mechanism moves the engagement portion to the position where the engagement with the fixture is released when the backrest portion is tilted forward by a predetermined angle from the state where the backrest portion is raised. The joint portion can be separated upward with respect to the fixture, and the engaging portion is moved downward to be driven by the fixture to engage with the fixture regardless of the position of the backrest portion. Therefore, the seat can be fixed to the floor even when the seat back is tilted forward, and thus the effect of stabilizing the seat during traveling can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view showing an entire floor lock device according to an embodiment of the present invention.
FIG. 2 is a side view showing a lock mechanism in the embodiment.
FIG. 3 is a cross-sectional view showing a lock mechanism in the embodiment.
FIG. 4 is a side view showing a sequence from (A) to (F) in order to unlock the floor lock device and lock it again.
5A is a side view showing a state where the lock mechanism is locked to the striker, FIG. 5B is a side view showing a process in the middle of releasing the lock, and FIG. 5C is a state after the lock is released. FIG.
6E is a side view showing a state in which the lock mechanism is locked again to the striker, and FIG. 6F is a side view showing a state in which the arm is restored.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 ... Seating part bracket (sitting part), 13 ... Back bracket (backrest part), 23 ... Crow (engagement part), 25 ... Stopper,
27 ... Coil spring (second elastic member), B ... Seat back,
C ... Seat cushion, S ... Striker (fixture).

Claims (3)

A seating section;
A seat lock device for a vehicle seat for removably fixing a seat having a backrest portion rotatably connected to the seating portion via a reclining mechanism to a vehicle floor,
A crow that detachably engages with a striker provided on the floor;
A rotatable stopper that maintains a state in which the crow is engaged with the striker by engaging with the crow;
By rotating, the pin provided on the stopper is pressed to rotate the stopper, thereby releasing the engagement state between the stopper and the claw, and then the arm separating from the stopper;
A cable that is pulled in conjunction with the forward tilting operation of the backrest portion is connected, and a lever that rotatably supports the arm at a portion to which the cable is connected ,
In the state where the arm presses the pin, the arm is in contact with a member that restricts rotation of the lever in a direction opposite to the pressing direction. . Comprising a first elastic member for biasing said claw upward, the first elastic member, the Crow be detached upward from the striker when the engagement between the claw and the striker is released The floor lock device for an automobile seat according to claim 1. The stopper and the Crow is biased in the direction of each other one end thereof by the second elastic member approach each other, the engagement state between the claw is released by rotating the stopper, whereby said Crowe one end pivoted to the stopper side by the biasing force of the second elastic member, thereby the vehicle seat according to claim 1, characterized in that the engagement state between the striker over is released Floor lock device.

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