JP2005007916A - Unlocking mechanism of locking device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an unlocking mechanism of a locking device which is installed in a limited space and capable of performing unlocking operation with a slight operating force. <P>SOLUTION: The unlocking mechanism comprises a lever body 4 which is moved to a leg 13 coupled with a locking device so as to unlock the locking device comprising a latch 2, a pawl 3 and a striker 15 by this movement, and a flexible, wire-like or strip-like waving 6 in which a base end returning unit 61 is fixed to the leg 13, an intermediate portion is slidably wound in a through hole 41 in the lever body 4, and returned in the moving direction of the lever body 4, a tip 63 forms a free end, and the lever body 4 is turned while changing the portion wound around the lever body 4 by pulling the tip 63 in the longitudinal direction thereof. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lock release mechanism of a lock device, and more particularly to a lock release mechanism that can be suitably used for a lock device that locks a leg of a vehicle seat with respect to a vehicle floor.
[0002]
[Prior art]
The vehicle seat that can be stowed up to the side and stored along the side wall W of the passenger compartment will be described with reference to FIGS. The seat body 1 includes a seat cushion 11 and a seat back 12 coupled to the rear end thereof so as to be able to move forward. The seat cushion 11 has one side edge 111 coupled to the passenger compartment side wall W by a bracket 14 and extends in the front-rear direction. It can be rotated around a horizontal axis L. As shown in FIG. 2, the other side edge 112 of the seat cushion 11 is supported on the vehicle floor F by a leg 13 provided on the lower surface thereof, and the leg 13 is supported on the vehicle floor by a locking device provided on the lower end thereof. Locked against F. When the seat body 1 is stored, after the seat back 12 is tilted on the seat cushion 11, the lock of the leg 13 with respect to the vehicle floor F by the locking device is released, and the seat around the horizontal axis L as shown in FIG. The main body 1 is rotated and jumped up to a position along the compartment side wall W.
[0003]
Details of the locking device will be described with reference to FIGS. 4 and 5. Recesses 131 and 132 (FIG. 3) that open downward are formed in the rear and front portions of the lower end of the leg 13, and strikers 151 and 152 provided on the vehicle floor F enter the recesses 131 and 132, respectively. ing. In addition, latches 16 and 19 are provided on the leg 13 so as to be rotatable and interlocked with each other by an unillustrated mechanism. The latches 16 and 19 are engaged with the strikers 151 and 152 to prohibit the strikers 151 and 152 from exiting from the recesses 131 and 132. Further, a pole 17 is rotatably provided on the leg 13. The pawl 17 is engaged with the latch 16, and the latches 16 and 19 are prevented from rotating and releasing the engagement with the strikers 151 and 152. A coil spring 18 is installed between the latch 16 and the pole 17 to urge the latch 16 in a direction to release the engagement with the striker 151 and to urge the pole 17 in a direction to engage the latch 16.
[0004]
An operation lever 172 as a lock release mechanism is coupled to the pole 17, and when the lock of the leg 13 with respect to the vehicle floor F is released, the operation lever 17 is grasped and rotated. When the operation lever 17 is rotated, as shown in FIG. 5B, the pole 17 rotates integrally with the operation lever 17 to release the engagement with the latch 16, and at the same time, the latch is applied by the biasing force of the coil spring 18. 16 and 19 are rotated to disengage the strikers 151 and 152, so that the strikers 151 and 152 can escape from the recesses 131 and 132 of the leg 13.
[0005]
Patent Document 1 discloses a device using a strap as an unlocking mechanism of a locking device.
[Patent Document 1] JP-A-9-142188
[Problems to be solved by the invention]
In the above conventional lock release mechanism, it is necessary to secure the length of the operation lever 17 in order to suppress the operation force at the time of unlocking, but if the lever length is increased, the handle portion 173 of the operation lever 17 at the time of unlocking. Greatly moves upward (FIG. 5B). On the other hand, as shown in FIG. 6, when the vehicle seat is provided on the vehicle floor F that is raised stepwise, the height of the leg 13 is set to ensure the clearance from the vehicle ceiling R when the passenger is seated. There is a problem that the long operation lever 17 cannot be used because the tip handle 173 moves greatly upward.
[0007]
Therefore, the present invention solves such a problem, and provides an unlocking mechanism for a locking device that can reduce an operation force at the time of unlocking and can be installed in a limited space. Objective.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the lock release mechanism of the lock device of the first invention can be moved in a predetermined direction, and the movement is coupled to the lock device so that the lock device is unlocked by this movement. The member and one end are fixed to a member fixed to the locking device, the intermediate part is slidably wound around one end of the actuating member and folded in the moving direction of the actuating member, and the other end is And a flexible operation member that moves the operating member while changing a portion that is wound around the operating member when the other end is pulled in the longitudinal direction.
[0009]
In the first aspect of the invention, when the other end of the operating member is pulled in the longitudinal direction, one end of the operating member is fixed to the locking device, so that the operating member is slidably wound around one end of the operating member. Is moved, the operating member is moved while changing the portion to be hung around, and the lock device is unlocked. According to the lock release mechanism having such a configuration, the operation force can be reduced, and the lock release mechanism can be installed in a limited space.
[0010]
The vehicle seat according to the second aspect of the present invention includes a seat body (1), a leg (13) for supporting the seat body (1) on the vehicle floor (F), and the leg (13) on the vehicle floor ( F) A vehicle provided with a lock device (2, 3, 15) for locking with respect to F) and a lock release mechanism (4, 6) for unlocking the lock device (2, 3, 15) In the seat, the unlocking mechanism can be moved relative to the leg (13), and this movement causes the locking device (2, 3, 5) to be actuated to unlock the operating member ( 4) and one end (61) are fixed to the leg (13), the intermediate part is slidably wound around one end of the actuating member (4), and is folded back in the moving direction of the actuating member (4). (63) is the free end and the other end (63) is Pulled in the longitudinal direction and the actuating member (4) over Turned while changing the partial actuating member (4) to form flexible line to rotate or strip-shaped operation member (6), and a.
[0011]
In the second invention, when the other end of the operation member is pulled in the longitudinal direction, one end of the operation member is fixed to the leg, so that the operation member is slidably wound around one end of the operation member. The operating member is rotated while changing the portion to be hung around, and the lock device is unlocked. According to the vehicle seat having such a configuration, the operation force of the lock release mechanism can be reduced, and the installation space for the lock release mechanism can be reduced.
[0012]
Here, the operating member (4) is provided such that one end of the operating member (4) is pivotable in the front-rear direction of the seat body (1) with respect to the leg (13) with respect to the shaft (31). The intermediate portion of the actuating member (4) may be wound around the other end (41). According to the vehicle seat having such a configuration, the operation force of the lock release mechanism can be reduced, and the leg height can be reduced.
[0013]
In addition, the code | symbol in the said parenthesis shows the correspondence with the specific means as described in embodiment mentioned later.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a side view of a vehicle seat provided with the lock release mechanism of the present invention. The vehicle seat has the same structure as that described in paragraph 0002. Other structures will be described below.
[0015]
On the vehicle floor F, strikers 151 and 152 are provided. The strikers 151 and 152 are gate-shaped and have horizontal portions 153 and 154 at their upper ends. Recesses 131 and 132 that open downward are formed at the front and rear ends of the lower end of the leg 13. The horizontal portions 153 and 154 of the strikers 151 and 152 enter the recesses 131 and 132, and the upper edge of the recesses 131 and 132 of the leg 13 is placed on the horizontal portions 153 and 154 of the strikers 151 and 152. By being placed, it is supported on the vehicle floor F. A latch 2 is provided at the lower rear end of the leg 13. The latch 2 is substantially U-shaped having an engaging recess 21, and an intermediate portion thereof is rotatably coupled to a shaft body 22 projecting horizontally on the leg 13. The horizontal portion 153 of the striker 151 enters the engagement recess 21 of the latch 2. The engagement recess 21 faces forward, and the latch 2 is in a state of being engaged with the striker 151. The lower end of the pole 3 is rotatably coupled to a shaft 31 that protrudes horizontally on the leg 13. Then, the corner 32 formed on the rear side surface of the pole 3 engages with the locking recess 23 formed at one end of the latch 2, and the latch 2 is directed in the direction in which the engagement recess 21 faces downward (see FIG. The rotation of the latch 2 in the counterclockwise direction (1) is prevented. As a result, the escape of the striker 151 from the recess 131 is prohibited, and the leg 13 is locked to the vehicle floor F. Such a latch 2 and a pole 3 constitute a locking device.
[0016]
The leg 13 is provided with a lever body 4 as an operating member. The lever body 4 extends in the vertical direction, and a lower end thereof is coupled to the shaft body 31 so as to be rotatable in the front-rear direction (left-right direction in FIG. 1) integrally with the pole 3. The lever body 4 is formed with an elongated hole-shaped through hole 41 extending in the vertical direction at the upper end. A part of the through hole 41 is opened rearward. A pole 3 is attached in a direction to engage the latch 2 between a spring locking portion 33 formed protruding at the tip of the pole 3 and a spring locking piece 24 provided so as to protrude upward from the latch 2. An urging member for urging the latch 2 in a direction for releasing the engagement with the striker 151, specifically, a coil spring 51 is installed.
[0017]
A hook-shaped locking piece 52 is provided in the middle part of the leg 13 in the front-rear direction, and the locking piece 52 has a base end portion 61 of the waving 6 as a flexible band-shaped operation member having flexibility. Is fixed. The webbing 6 extends rearward from the locking piece 52, is slidably passed through the through hole 41 of the lever body 4, and is wound around so as to be reversed forward. In addition, a round bar-like reversing member 62 that extends upward is provided at the intermediate portion in the front-rear direction of the leg 13, and the inverted webbing 6 extends forward to reach the reversing member 62, and on the outer periphery of the reversing member 62. It is wound around and reversed backward, and its tip 63 is a free end, and is drawn outward from the rear end opening 133 of the leg 13. The lever body 4 and the webbing 6 constitute a lock release mechanism.
[0018]
A latch 8 is provided at the lower rear end of the leg 13. The latch 8 is rotatably coupled to a shaft body 81 whose upper and lower intermediate portions project horizontally from the leg 13. The lower half portion 82 of the latch 8 is formed in a hook shape, engages with the horizontal portion 154 of the striker 152, and prohibits the striker 152 from escaping from the recess. The upper end of the latch 8 is connected to the upper end of the pole 3 via a connecting arm 7 so that the latch 8 and the pole 3 are interlocked. The connecting arm 7 is rotatably coupled to the latch 8 and the pole 3.
[0019]
When the seat body 1 (FIG. 2) is flipped up and stored toward the side wall W, the seat back 12 is laid down on the seat cushion 11, and then the tip 63 of the waving 6 is pulled backward. Since the base end 61 of the pulled webbing 6 is fixed, the portion that is slidably passed through the through hole 41 of the lever body 4 is dragged, and the portion that is wound around the lever body 4 is changed. The lever body 4 is rotated forward. Thereby, the pole 3 integral with the lever body 4 is rotated forward, and the engagement of the pole corner 32 with the locking recess 23 of the latch 2 is released. At the same time, the latch 2 is rotated counterclockwise by the biasing force of the coil spring 51, and the engagement recess 21 is directed downward. In other words, the engagement with the striker 151 is released, and the striker 151 is allowed to escape from the recess 131 of the leg 13. Further, as the pole 3 rotates forward, the latch 8 rotates counterclockwise in FIG. 1 via the connecting arm 7, disengages the striker 152, and the striker 152 is recessed in the leg 13. It is possible to escape from the place 132. Thus, the side edge 112 (FIG. 2) of the seat cushion 11 is lifted upward, and the seat body 1 is flipped up to a position along the side wall of the passenger compartment around the horizontal axis L of the bracket 14 to which the side edge 111 is coupled. Can be stored (FIG. 3).
[0020]
In the present embodiment, the operating force for pulling the waving 6 is approximately half of the operating force for directly rotating the lever body 4 according to the principle of the pulley. Therefore, even when the length of the lever body 41 cannot be sufficiently secured because the height of the leg 13 is low, the unlocking operation can be performed with a light operation force. In the above-described embodiment, the reversing member reinverts the direction of the waving backward, so that it is not particularly necessary when reinversion is unnecessary. In the present invention, the locking device is not limited to the structure described in the above embodiment. For example, the locking device does not include a pole and includes only a latch biased in a direction to engage with the striker. Any structure may be used as long as the leg 13 can be locked with respect to F.
[0021]
【The invention's effect】
As described above, according to the lock release mechanism of the lock device of the present invention, the operation force can be reduced, and the lock device can be installed in a limited space.
[Brief description of the drawings]
FIG. 1 is a side view of a leg showing an embodiment of the present invention.
FIG. 2 is a perspective view of a conventional example of a vehicle seat in use.
FIG. 3 is a perspective view of a conventional example of a vehicular seat in a stored state.
FIG. 4 is a schematic side view of a conventional example of a vehicle seat in use.
FIG. 5 is a side view of a vehicle seat locking device and a lock release mechanism showing a conventional example.
FIG. 6 is a schematic side view of a vehicle seat showing a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Sheet | seat main body, 13 ... Leg, 151, 152 ... Striker, 2 ... Latch, 3 ... Pole, 31 ... Shaft body, 4 ... Lever body, 41 ... Through-hole, 6 ... Webbing, 61 ... Base end, 63 ... Tip , F ... Vehicle floor.

Claims (3)

An operation member coupled to the lock device so that the lock device can be unlocked by this movement, and one end fixed to a member fixed to the lock device. The intermediate portion is slidably wound around one end of the operating member, folded back in the moving direction of the operating member, the other end is a free end, and the other end is pulled in the longitudinal direction, the operation And a flexible operation member that moves the operating member while changing a portion that is hung around the member. A seat body, a leg for supporting the seat body on the vehicle floor, a locking device for locking the leg to the vehicle floor, and an unlocking mechanism for unlocking the locking device; The unlocking mechanism can be moved with respect to the leg, and the movement member coupled to the locking device so that the locking device can be unlocked by this movement, and one end of the locking member. It is fixed to the leg, the intermediate part is slidably wound around one end of the operating member, folded back in the moving direction of the operating member, the other end is a free end, and the other end is pulled in the longitudinal direction And a flexible operation member that rotates the operating member while changing a portion that is hung around the operating member. The actuating member is provided so as to be pivotable in the front-rear direction of the seat body with respect to the leg around one end thereof, and an intermediate portion of the operating member is wound around the other end of the actuating member The vehicle seat according to claim 2.

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