JPH11147432A - Locking mechanism for vehicle detachable seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a locking mechanism for a vehicle detachable seat with a simple structure and a small number of parts. SOLUTION: This locking mechanism is provided with a latched means 21 arranged on a leg 10d that is installed on the bottom surface of a seat cushion 10a and projects downward, a cylinder 22 that is embedded on the floor and opens upward on the floor and into which the leg 10d is rotatably, insertably, and ejectably inserted, a latching pin 23 that is installed at the lower end portion of the inside of the cylinder 22 and detachably latches the latched means 21. The locking mechanism is configured so that by installing the leg 10d into the cylinder 22 and rotating the leg 10d in one direction, the latched means 21 is latched by the latching pin 23 and rotates the cylinder in the other direction, whereby the latched means 21 separates from the latching pin 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a locking mechanism for a removable seat for a vehicle.

[0002]

2. Description of the Related Art As one type of vehicle seat, a seat cushion is detachably mounted on a vehicle floor, and the seat is detached from the vehicle floor and stored in a state where a seat back is laid down on the seat cushion. There are two types of seats, known as removable seats for vehicles.

In the detachable seat, a lock mechanism for fixing the leg on the vehicle floor is provided at each leg provided at the lower end of the seat cushion and supporting the seat. Each leg is fixed on the vehicle floor by a locking action, and the locking action by each locking mechanism is released to release the fixing of each leg to the vehicle floor.

As a lock mechanism to be employed, basically, a hook rotatably assembled to a base and hung on a hook bar (called a striker) provided on the floor side, and rotatable on the base. A ratchet that is attached to the hook and is hooked on the hook to regulate the rotation of the hook, a spring that is hooked on both of them, and that is connected to the ratchet or the hook that holds the hooked state of the ratchet with the hook, is connected to the ratchet, and the ratchet of the ratchet is operated by the lever. 2. Description of the Related Art A lock mechanism of a type including a lock release lever for releasing a hook state of a hook is well known.

In the lock mechanism having such a configuration, each leg of the seat is fixed on the floor by the hooking action of the hook on the striker, and the hooking state of the hook on the striker is maintained by the hooking action of the ratchet on the hook. Further, the latching action of the ratchet is released by the releasing action of the release lever, and the hooking state of the hook on the striker is released. A special configuration of this type of lock mechanism is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-67186.

[0006]

As described above, in the conventional lock mechanism, there are many constituent members, the structure is complicated,
There is a drawback that it becomes large, and furthermore, the striker that is a locking member of the lock mechanism is exposed as a protrusion on the floor, and depending on the arrangement position of the striker, a space formed by detaching the seat. There is a possibility that it will be a hindrance when loading luggage into. Accordingly, it is an object of the present invention to address these issues.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a locking mechanism for a removable seat for a vehicle, and the locking mechanism is provided on a lower leg of a seat cushion and provided on a leg protruding downward. And a tubular body buried in the vehicle floor, opening upwardly on the vehicle floor, and into which the leg is removably and rotatably inserted, and provided at a lower end portion of the tubular body, and detaches the hooked means. Hooking means for hooking the legs so that the legs are inserted into the cylinder and rotated in one direction so that the hooked means is hooked on the hooking means and rotated in the other direction. The hooking means is detached from the hooking means by means of.

In the lock mechanism according to the present invention, the engaging means is formed by a vertical groove extending vertically from the lower end of the leg by a predetermined length, and a horizontal groove extending horizontally from the upper end of the vertical groove by a predetermined length. It is preferable that the engaging means is constituted by an engaging pin inserted into a vertical groove and a lateral groove constituting the engaging means.

Further, in the lock mechanism according to the present invention, the upper end opening of the cylindrical body is formed in a conical recess gradually expanding upward, and the recess is formed in the middle outer peripheral portion of the leg. It is preferable that a retainer for receiving the provided step is disposed.

In the lock mechanism according to the present invention, the retainer is formed in a ring shape having a shape corresponding to the concave portion of the cylindrical body, and the inner peripheral surface of the concave portion and the outer peripheral portion of the step of the leg are formed. It is preferable to adopt a configuration in which a plurality of balls interposed between the surfaces are rollably supported.

[0011]

In the lock mechanism according to the present invention, the lower end of the leg provided on the lower surface of the seat cushion and projecting downward is buried in the vehicle floor and opens upward on the vehicle floor. If it is inserted into the body and rotated in one direction, the hooked means provided at the lower end of the leg is hooked on the hooking means provided on the cylindrical body side, so that the lower end of the leg is on the vehicle floor side. The seat is fixed and supported on the vehicle floor.

In the seat supported on the vehicle floor, if the leg is rotated in the other direction and pulled up, the hooked means provided on the lower end of the leg can be hooked on the hooking means provided on the cylinder side. The stop state is released, the fixed state of the lower end of the leg to the vehicle floor side is released, and the seat can be detached from the vehicle floor.

In the lock mechanism, a locking means provided on the leg, and a cylindrical body buried in the vehicle floor, opened upward on the vehicle floor, and into which the leg is removably inserted and rotatably inserted. Because of the structure provided with the latching means provided at the lower end portion of the cylinder and detachably latching the latching means, the number of constituent members is smaller than that of the conventional lock mechanism, the structure is simple, It becomes small.

Further, since the locking means corresponding to the striker of the conventional locking mechanism is buried in the vehicle floor, the locking means is exposed as a projection on the floor even when the seat is detached from the vehicle floor. Nothing. For this reason, if the lock mechanism is adopted in a portion that may obstruct the loading of the load into the space from which the seat has been detached, the load can be easily loaded into the space.

In the lock mechanism according to the present invention, the engaging means comprises a vertical groove extending vertically from the lower end of the leg by a predetermined length, and a horizontal groove extending horizontally from the upper end of the vertical groove by a predetermined length. And, when the latching means is constituted by latching pins inserted into the vertical groove and the lateral groove constituting the latching means, the latching of the latching means with respect to the latching means and the latching release are easy. In addition, the structure of the hooking means and the hooking means is extremely simple.

Further, in the lock mechanism according to the present invention,
The upper end opening of the cylindrical body is formed in a conical recess that gradually expands upward, and a retainer that receives a step provided on an intermediate outer peripheral portion of the leg is disposed in the recess. In this case, the rotation of the leg in the cylinder is smoothed, so that the hooking means can be easily hooked on and unlocked from the hooking means, and the support state of the leg on the vehicle floor can be further stabilized.

In the lock mechanism according to the present invention,
A configuration in which the retainer is formed in a ring shape having a shape corresponding to the concave portion of the cylindrical body, and the plurality of balls interposed between the inner peripheral surface of the concave portion and the outer peripheral surface of the step portion of the leg are rollably supported. Then, the rotation of the leg inside the cylinder becomes smoother,
The hooking of the hooked means to the hooking means and the release of the hooking are further facilitated.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIGS. 1 to 4 show various states of a removable seat for a vehicle employing a lock mechanism according to the present invention. In these figures, FIG. 1A shows a state in which the seat is fixed to the vehicle floor and can be seated, and FIG.
FIG. 3 shows a state in which the seat is fixed to the vehicle floor and the seat back is laid down on the seat cushion, FIG.
FIG. 4A shows a state in which the locked state of the left leg with respect to the vehicle floor is released and the vehicle is stored in an inverted state toward the side wall of the vehicle compartment, and FIG. Each state is shown. 1 (b) to 4 (b) show a state immediately before the right leg is fixed by employing the lock mechanism according to an example of the present invention.
It shows a fixed state, a state before releasing the fixing, and a state where the fixing is released and pulled out.

The seat is a right seat constituting a rear seat, and as shown in FIGS. 1 to 7, a seat cushion 10a, a seat back 10b, and a left leg 10c.
And two front and rear lock mechanisms 10e and 10f for the left leg 10c, a right lock mechanism 10g for the seat cushion 10a, a right lock mechanism 10h for the seat back 10b, and a lock for the right front leg 10d. A mechanism 20 is provided. In the seat, the right front leg 10d and the right leg 10d
Except for the lock mechanism 20 for d, it has a known configuration.

FIG. 5 shows a frame structure constituting the seat. A seat back 1 is provided at the rear end of the cushion frame 11 constituting the seat cushion 10a.
0b, the lower end of the back frame 12 is attached rotatably in the front-rear direction.
Is held upright as shown in FIG. 1 (a), and the seat cushion 10a as shown in FIG. 2 (a).
Can fall on top.

The left leg 10c is provided with lock mechanisms 10e and 10f before and after the left leg 10c. The left leg 10c is attached to the lower left portion of the cushion frame 11 at the upper end so as to be rotatable left and right and up and down. Have been. Left leg 1
In 0c, the lock mechanisms 10e and 10f are fixed on the vehicle floor 33 and supported in an upright state by the fixing action of the lock mechanisms 10e and 10f, but can be folded to the lower surface side of the seat cushion 10a in the released state.

Each of the lock mechanisms 10e and 10f is a known one, and a hook 13a provided on the leg 10c side is releasably hooked on a striker 13b protruding from the vehicle floor, and each of the front and rear ends of the left leg 10c. Is fixed on the vehicle floor 33. In the lock mechanisms 10e and 10f, the hooks 13a are connected to each other by the connecting rod 13c, and the hooking state of the hooks 13a to the strikers 13b is released in conjunction with the pulling operation of the connecting rod 13c. Is configured to obtain.

The right locking mechanism 10g for the seat cushion 10a and the right locking mechanism 10h for the seat back 10b are also known. Seat cushion 10a
In the right lock mechanism 10g, the hook 14a provided on the cushion frame 11 side is releasably hooked to the striker 14b provided on the tire house 31 in the vehicle cabin, so that the rear right side of the seat cushion 10a is connected to the tire house. 31. In addition, seat back 1
In the right lock mechanism 10h for 0b, the hook 15a provided on the back frame 12 side is releasably hooked to the striker 15b provided on the vehicle interior side wall 32,
The upper right side of the seat back 10b is fixed.

In the lock mechanism 10g, the hooks 14a, 1 are operated by operating a release lever (not shown), and in the lock mechanism 10h, by operating the release lever 15c.
The locked state of the strikers 14b and 15b of 5a is released.

Thus, the right front leg 10d is a pipe having a predetermined length, and a hinge bracket 16b is provided at the upper end of the leg body 16a as shown in FIGS. 1 to 5, 8, and 9. The lower end of the leg body 16a is provided with a locking means 21 constituting a lock mechanism 20 as shown in FIGS. 1 to 4 and FIG.

In the leg body 16a, a portion from the lower end to a portion at a predetermined height is formed in a reduced diameter portion 16a1, and a boundary portion with the large diameter portion 16a2 is formed in a conical step 16a3. Have been.

The hinge bracket 16b includes a pair of front and rear arms 16b1 and 16b2.
The cushion holes 1 and 16b2
A connecting rod 11c, which is fixed to the front part of the right frame part 11a and the right part of the front frame part 11b and projects obliquely to the left front, is rotatably inserted into both arm parts 16b1, 16b2.
A stopper plate 16c is fixed on the connecting rod 11c therebetween. The stopper plate 16c functions to prevent the leg body 16a from being pulled out of the connecting rod 11c and to regulate the relative rotation of the leg body 16a to the connecting rod 11c within the range shown in FIGS.

As shown in FIGS. 10 and 11, the lock mechanism 20 includes a locking means 21, a cylinder 22, a locking pin 23, a retainer 24, and a lock base 25 provided at the lower end of the leg body 16a. It is configured. The hooking means 21 includes a vertical groove 21a vertically extending a predetermined length from the lower end of the leg body 16a, and a horizontal groove 21b extending horizontally a predetermined length from the upper end of the vertical groove 21a.
b has a predetermined groove width.

The cylindrical body 22 is composed of a cylindrical main body 22a and a conical recess 22b gradually expanding upward from the upper end thereof. The inner diameter of the cylindrical main body 22a is a small diameter portion on the lower end side of the leg main body 16a. 16a1 is formed to have a size that allows insertion, and a hooking pin 23 is inserted and fixed to the lower end thereof. The thickness of the locking pin 23 is determined by the length of the vertical groove 2 of the locking means 21.
1a and a dimension that can be inserted into the lateral groove 21b. In the cylindrical body 22, the retainer 2 is located in the recess 22b.
4 with the upper end flange 22 of the recess 22b
The lock base 25 is fixed to c.

The cylinder 22 is buried in a predetermined portion of the vehicle floor 33, and the lock base 25 is attached to the vehicle floor 33.
By mounting on top, the opening of the lock base 25,
And an upper opening through a retainer 24. The retainer 24 has a ring shape substantially similar to the concave portion 22b of the cylindrical body 22, and a plurality of balls 24b are rotatably supported on the lower end side edge of the retainer main body 24a. The retainer 24 is free in the recess 22b.

In the lock mechanism 20, the right front leg 10d is inserted into the cylindrical body 22 through the lock base 25 and the retainer 24 and rotated to one side, so that the locking means 21 provided at the lower end of the leg body 16a is provided.
Is hooked on the hook pin 23, whereby the right front leg 1 is
0d is fixed to the vehicle floor 33 to support the seat.

Thus, the connecting portion of the right front leg 10d to the connecting rod 11c is deviated by a predetermined amount toward the cabin as compared with the hooking portion of the hook 14a to the striker 14b in the right locking mechanism 10g for the seat cushion 10a. Thus, a line L connecting the connecting portion and the engaging portion is inclined at a predetermined angle with respect to the cabin side wall 32. In addition, the connecting portion and the engaging portion are configured to be rotatable on a line L,
The line L is the center of rotation of the seat cushion 10a toward the passenger compartment side wall 32.

In the vehicle seat having such a configuration, in a normal use state, as shown in FIGS. 1A and 6, the seat cushion 10a is supported on the vehicle floor 33 by the left leg 10c and the right front leg 10d. And is fixed via the lock mechanisms 10e, 10f, 20 and
It is fixed to the tire house 31 via a lock mechanism 10g. In the seat back 10b, the seat back 10b is fixed to the vehicle interior side wall 32 via a lock mechanism 10h.

In particular, in the right front leg 10d, the lower end of the leg body 16a is inserted into the cylindrical body 22 constituting the lock mechanism 20, and is engaged in the lateral groove 21b constituting the engaging means 21. The pin 23 is positioned and the hooked means 21 is hooked on the hook pin 23, whereby the right front leg 10 d is fixed to the vehicle floor 33.

When the vehicle seat is not in use, the fixed state of the seat back 10b to the cabin side wall 32 by the lock mechanism 10h is released when the seat back 1 is not in use.
0b as shown in FIG. 2 (a).
The vehicle floor 3 of the left leg 10c by the two lock mechanisms 10e and 10f in this fall state.
When the seat 3 is released, the seat is turned upward about the line L and stored in the inverted state toward the passenger compartment side wall 32 as shown in FIGS. Can be. The sheet in the stored state is the belt 3
4 is fixed to a hook 35 provided on the side wall 32 of the passenger compartment to maintain the stored state.

In the retracted state, the right front leg 10
d is provided inside the seat cushion 10a at a predetermined distance from the cabin side wall 32, and the seat cushion 10a
Since the center of rotation (line L) is inclined at a predetermined angle with respect to the cabin side wall 32, the seat is inclined downward toward the support side of the right front leg 10d in the stored state. .

When it is desired to remove the seat in the stored state, the tire house 3 is locked by the lock mechanism 10g.
1 and the lock mechanism 10h and the belt 34 are released from the fixed state with respect to the cabin side wall 32, and the right front leg 10d is rotated by a predetermined amount clockwise in FIG. The stop is released and the tube is pulled out from the tube 22. As a result, the seat becomes a tire house 31, a vehicle cabin side wall 32, and a vehicle floor 3
3 and can be stored in another storage location.

By performing the above-described operations of lodging, storing, and removing in the reverse order, the sheet is moved to the position shown in FIG.
(A) and the use state shown in FIG. 6 can be restored.

In the lock mechanism 20, the locking means 21 provided on the right front leg 10d and the locking means 21 buried in the vehicle floor 33 and opened upward on the vehicle floor 33 so that the leg 10d can be inserted and removed and rotated. Inserted cylinder 2
2 and a locking means 21 provided at the lower end in the cylindrical body 22.
Is provided with a locking pin 23 for removably locking the lock mechanism.
The structure is simple and small. Further, since the locking pin 23 corresponding to the striker of the conventional locking mechanism is embedded in the vehicle floor 33, the locking means is exposed as a projection on the floor 33 even when the seat is detached from the vehicle floor 33. There is no risk of obstructing the loading of luggage into the space from which the seat has been detached.

In the lock mechanism 20, the locking means 21 includes a vertical groove 21a extending vertically from the lower end of the leg 10d by a predetermined length, and a horizontal groove 21b extending horizontally from the upper end of the vertical groove 21a by a predetermined length. And the hooking means comprises a longitudinal groove 21a and a lateral groove 2 which constitute the hooked means 21.
1b, the lock pin 23 is inserted.
The locking and release of the locking means 21 with respect to the locking pin 23 is easy, and the configuration of the lock mechanism 20 is extremely simple.

Further, in the lock mechanism 20, the upper end opening of the cylindrical body 22 is formed in a conical recess 22b which gradually expands upward, and the recess 22b is provided on the intermediate outer peripheral portion of the leg 10d. Since the retainer 24 for receiving the step 16a3 is arranged, the cylindrical body 22 of the leg 10d is formed.
The rotation operation in the inside becomes smooth, the hooking of the hooking means 21 to the hooking pin 23 and the release of the hooking become easier, and the support state of the leg 10d to the vehicle floor 33 is further stabilized.

In the lock mechanism 20, the retainer 24 is formed in a ring shape having a shape corresponding to the recess 22b of the cylindrical body 22, and the inner peripheral surface of the recess 22b and the leg 10d are formed.
Balls 24 interposed between the outer peripheral surfaces of the step portions 16a3
b is supported so as to be able to roll.
The rotation operation of the 0d in the cylindrical body 22 becomes smoother, and the hooking of the hooking means 21 to the hooking pin 23 and the release of the hooking are further facilitated.

[Brief description of the drawings]

FIG. 1A is a perspective view showing a use state of a vehicle seat according to an example of the present invention, and FIG. 1B is a perspective view showing a state immediately before fixing the front right leg of the seat to a floor.

FIGS. 2A and 2B are a perspective view showing a state in which a seat back of the seat is laid down, and a perspective view showing a state in which the right front leg of the seat is fixed to a floor.

3A is a perspective view showing a stored state of the seat, and FIG. 3B is a perspective view showing a state before the seat is fixed to a floor of a right front leg of the seat before release.

FIG. 4 is a perspective view showing a state where the sheet is removed,
FIG. 7B is a perspective view showing a state in which the fixing of the right front leg of the seat to the floor is released.

FIG. 5 is a perspective view showing a frame structure constituting the seat.

FIG. 6 is a schematic plan view showing a use state of the sheet.

FIGS. 7A and 7B are a schematic plan view and a schematic side view showing a stored state of the sheet.

FIG. 8 is a partial perspective view showing a connected state of a right front leg constituting the seat to a cushion frame when the seat cushion is in a horizontal state.

FIG. 9 is a partial perspective view showing a connected state of the right front leg to the cushion frame when the seat cushion is in an inverted state.

FIG. 10 is a partial longitudinal sectional view showing a state where the right front leg is fixed to a floor.

FIG. 11 is an exploded perspective view showing constituent members of a lock mechanism for the right front leg.

[Explanation of symbols]

10a: seat cushion, 10b: seat back, 1
0c left leg, 10d right front leg, 10e, 10
f, 10g, 10h: lock mechanism, 11: cushion frame, 11a: right frame, 11b: front frame, 11c
... connecting rod, 12 ... back frame, 13a, 14
a, 15a: hook, 13b, 14b, 15b: striker, 13c: connecting rod, 15c: release lever, 16
a ... leg body, 16a1 ... small diameter part, 16a2 ... large diameter part,
16a3: Step, 16b: Hinge bracket, 16b1,
16b2: Arm, 16c: Stopper plate, 20
... Locking mechanism, 21 Locking means, 21a Vertical groove, 21
b: lateral groove, 22: cylindrical body, 22a: cylindrical body, 22b: recess, 22c: flange portion, 23: retaining pin, 24: retainer, 24a: retainer body, 24b: ball, 25 ...
Lock base, 31 ... tire house, 32 ... car side wall,
33: vehicle floor, 34: belt, 35: hook, 36
… Side window.

Claims (4)

[Claims] 1. A locking means provided on a leg which is provided on a lower surface of a seat cushion and protrudes downward, and is embedded in a vehicle floor and opened upward on the vehicle floor so that the leg can be inserted and removed and can be rotated. And a locking means provided at a lower end portion of the cylindrical body for locking the locking means so that the locking means can be detached. The leg is inserted into the cylindrical body and rotated in one direction. The detachable seat for a vehicle, wherein the engaging means is engaged with the engaging means, and the engaging means is detached from the engaging means by rotating in the other direction. Lock mechanism. 2. The locking mechanism according to claim 1, wherein said hooking means extends vertically from a lower end of said leg by a predetermined length, and extends horizontally from an upper end of said vertical groove by a predetermined length. A detachable seat for a vehicle, wherein the detachable seat is constituted by a lateral groove, and the engaging means is constituted by an engaging pin inserted into the vertical groove and the lateral groove constituting the engaged means. Lock mechanism. 3. The locking mechanism according to claim 1, wherein an upper end opening of the cylindrical body is formed in a conical recess which gradually expands upward, and the recess has a leg portion. A detachable seat locking mechanism for a vehicle, comprising a retainer for receiving a step provided on an intermediate outer peripheral portion. 4. The locking mechanism according to claim 3, wherein the retainer is formed in a ring shape having a shape corresponding to the concave portion of the cylindrical body, and an inner peripheral surface of the concave portion and a step portion of the leg. A plurality of balls interposed between outer peripheral surfaces of the seat are rotatably supported.