JP2013133021A - Lock device of seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress backlash of an operation knob in a lock release state, in a lock device.SOLUTION: A lock mechanism 30 of the lock device 1 includes at least: an operation section 31 moving between a lock release position and a lock position; and a latch 32 separated from a striker 55 fixed to a vehicle by moving the operation section 31 from the lock position to the lock release position; wherein the operation section 31 is kept in the lock release position in the lock release state. An operation knob 10 is united with one end of a first transmission member (rod 20), and the other end of the first transmission member is united with the operation section 31. In a biasing member (torsion spring 60), one end is engaged with the first transmission member, and the other end is engaged with the operation knob 10, and the operation knob 10 is energized, in a predetermined direction, to the first transmission member when at least the lock mechanism 30 is in the lock release state.

Description

  The present invention relates to a vehicle seat locking device.

  Vehicle seats are often configured to be movable so that the layout can be changed according to the purpose of use. The seat is locked to the vehicle in each layout, such as a normal use state and a state in which a part of the seat is moved. An example of such a locking device for locking is disclosed in Patent Document 1.

  In the lock device of Patent Document 1, the seat lock mechanism 4 and the operation knob 8 are coupled by the operation rod 6, and when the operation knob 8 is rotated, the operation rod 6 is pulled and the seat lock mechanism 4 is locked. To change to the unlocked state. Although not described in detail in this document, the operation portion (portion pulled by the operation rod 6) of the seat lock mechanism 4 is maintained in the raised posture when the lock state is changed to the unlocked state. The Therefore, in the unlocked state, the state where the operating rod 6 pushes up the operating knob 8 is maintained. As a result, the operation knob 8 remains in a rotated posture in the unlocked state, and the warning mark 30 is shown to the user.

  Further, the locking device of Patent Document 2 also discloses a similar mechanism. In the lock device of the same document, the operation lever 20 includes a main lever 22 and a sub-lever 26. In the unlocked state, the main lever 22 and the sub-lever 26 are shifted from each other so that they are unlocked. It is to be shown to the person. In order to realize this mechanism, the main lever 22 is always urged to the reference position by the return spring 24.

JP 2008-001312 A JP 2006-0669330 A

  However, in the lock devices of Patent Document 1 and Patent Document 2, when the operation lever rattles against the rod in the unlocked state and the vehicle is operated in the unlocked state, an abnormal noise is generated during operation of the vehicle. And the operation lever is worn out. Since the main lever 22 is urged by the return spring 24 in the locking device of Patent Document 2, it seems that there is no rattling at first glance, but in FIG. Since the sub lever 26 is lifted by returning and being able to freely rotate the sub lever 26 with respect to the main lever 22, there is a problem of rattling between the sub lever 26 and the rod 40.

  Therefore, an object of the present invention is to suppress rattling of an operation lever in a lock device that locks a vehicle seat.

  The present invention for achieving the above-described object is a locking device provided on the seat for locking the seat with respect to the vehicle, and an operation unit movable between the unlocking position and the locking position; It has at least a latch that is disengaged from the striker fixed to the vehicle by moving the operation unit from the lock position to the lock release position, and is configured to maintain the operation unit at the lock release position in the unlocked state. A lock mechanism, an operation knob supported movably with respect to the seat, one end coupled to the operation knob, and the other end coupled to the operation unit, and transmits the operation of the operation knob to the operation unit. When the first transmission member and one end engage with the first transmission member, the other end engages with the operation knob, and at least the lock mechanism is in the unlocked state, the operation knob Characterized in that it comprises a biasing member biasing in a predetermined direction relative to said first transmission member.

  In such a locking device, even if the operation portion to which the first transmission member is coupled is maintained in the unlocked position when the lock mechanism is in the unlocked state, the lock mechanism is attached when the lock mechanism is in the unlocked state. Since the biasing member biases the operation knob in a predetermined direction with respect to the first transmission member, rattling of the operation knob is suppressed.

  In the locking device described above, the first transmission member can be a link member that transmits the operation between the operation knob and the operation unit.

  If a structure having such a link member, that is, a member that can be pulled and pulled, such as a rod or a plate, is used instead of a member that can be pulled, such as a wire, a lock mechanism In the unlocked state, the operation unit pushes the operation knob via the link member. Therefore, the posture of the operation knob is clearly different between the locked state and the unlocked state, and the unlocked state can be shown to the user.

  In the lock device described above, the operation knob may be configured to be rotatably supported with respect to the seat.

  According to such a configuration, it becomes easy to operate the operation knob.

  In the configuration in which the operation knob is rotatable, it is preferable that the urging member urges the operation knob to the side corresponding to the lock position of the operation portion.

  According to such a configuration, the operation knob is unlikely to float from the seat in the locked state, and the operation knob can be clearly seen in the locked state.

  In the locking device described above, a support shaft that rotatably couples the operation knob and the first transmission member, and a first restriction portion that restricts movement of the first transmission member in the axial direction of the support shaft; The biasing member applies a biasing force around the support shaft to the operation knob, one end abuts the operation knob in the axial direction of the support shaft, and the other end of the first transmission member. It is desirable to urge toward the first restricting portion.

  According to such a configuration, the urging member urges the first transmission member toward the first restricting portion, and the first transmission member abuts on the first restricting portion, so that the first transmitting member is supported by the support shaft. Playing in the axial direction can be suppressed, and rattling of the first transmission member can be further suppressed. In this configuration, the support shaft may be an independent component, or may be configured integrally with the first transmission member or the operation knob.

  In the locking device described above, it is preferable that the biasing member has a coating made of an elastic material on at least one of a portion in contact with the operation knob and a portion in contact with the first transmission member.

  According to such a configuration, generation of abnormal noise is suppressed at the contact portion between the urging member and the operation knob and the contact portion between the urging member and the first transmission portion, and the operation knob and the first transmission are suppressed. The wear of the member can be suppressed.

  In the locking device described above, the first transmission member is provided separately from the first transmission member, the second transmission member for operating the operation unit, and the operation unit provided with the first transmission member and the second transmission member. A support pin engaged with the first transmission member; a first engagement portion provided on the first transmission member; and a second engagement engaged with the support pin provided on the second transmission member. And a portion of the support pin where the first engagement portion and the second engagement portion are engaged with each other, and the first engagement portion and the second engagement portion of the pin A pair of second restricting portions for restricting movement outward in the axial direction; and the first engaging portion and the second engaging portion provided between the first engaging portion and the second engaging portion. And a holding member that holds the distance so as to maintain the distance.

  With such a configuration, since the distance between the first engagement portion and the second engagement portion is maintained by the holding member, rattling of the first engagement portion and the second engagement portion with respect to the operation portion is suppressed. Can do.

  In this configuration, the holding member can be a washer.

  By using a washer as the holding member, it is difficult for the holding member to bite the first engaging portion and the second engaging portion during operation, and the first engaging portion and the second engaging portion are not rattled even after long-term use. Can be suppressed.

  According to the configuration of the first aspect, rattling of the operation knob is suppressed.

  According to the configuration of the second aspect, the posture of the operation knob is clearly different between the locked state and the unlocked state, and the unlocked state can be shown to the user.

  According to the structure of Claim 3, it becomes easy to operate an operation knob.

  According to the configuration of the fourth aspect, the operation knob does not easily float from the seat in the locked state, and the operation knob can be clearly seen in the locked state.

  According to the structure of Claim 5, it can suppress that the 1st transmission member plays in the axial direction of a support shaft, and can suppress the shakiness of a 1st transmission member.

  According to the configuration of the sixth aspect, it is possible to suppress the generation of abnormal noise and to suppress wear of the operation knob and the first transmission member.

It is a perspective view of the vehicle seat to which the locking device of the present invention is applied. It is a figure explaining the structure of the locking device in which a locking mechanism is in a locked state. It is a figure when the operation knob is seen from the arrow Z direction of FIG. It is the fragmentary sectional view of the coupling | bond part of an operation part and a transmission member seen from the arrow Y direction of FIG. It is a figure of the locking device in which a locking mechanism is in an unlocked state.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. As shown in FIG. 1, a locking device 1 according to an embodiment of the present invention is used for a rear seat S of a vehicle as an example of a vehicle seat, and has a function of locking the rear seat S to a vehicle body V. Specifically, the lock device 1 is provided on the seat back S1 of the rear seat S, and is locked or unlocked by engaging and disengaging the strike mechanism 55 with the striker 55 fixed to the vehicle body V. An operation knob 10 is connected to the lock mechanism 30 via a rod 20 as an example of a first transmission member and a link member, and a sub lever 110 is connected via a wire 120 as an example of a second transmission member. ing. The operation knob 10 is provided at the upper end of the left end of the seat back S1 (here, the left is based on an occupant sitting on the rear seat S), and the sub lever 110 is provided at the lower end of the rear side surface of the seat back S1. Is provided.

Next, details of the configuration of the locking device 1 will be described with reference to FIGS. 2 to 4.
As shown in FIG. 2, the lock device 1 mainly includes an operation knob 10, a rod 20, a lock mechanism 30, a wire 120, and a torsion spring 60 as an example of an urging member.

  The operation knob 10 is a member for operating the lock mechanism 30 from the locked state to the unlocked state, and rotates with respect to the lever base 51 fixed to the seat back S1 so that the user can easily operate the lock mechanism 30. Supported as possible. Specifically, the operation knob 10 has a boss 11 protruding left and right, and this boss 11 is supported by engaging with a hole (not shown) provided in the lever base 51.

  The operation knob 10 includes an upper wall 12, an intermediate wall 13 that communicates with the upper wall 12 on the front side, and a lower wall 14 that communicates with the intermediate wall 13 at the rear end, and these upper wall 12, intermediate wall 13, and lower wall 14. Are connected by left and right side walls 15 (see also FIG. 3). On the upper surface of the intermediate wall 13 is provided a mark 53 indicating the unlocked state when unlocking. The lever base 51 is provided with a stopper 51A for restricting the operation knob 10 from rotating counterclockwise in FIG. 2, and the stopper 51A is operated in a locked state by contacting the lower wall 14. The posture of the knob 10 is regulated.

  A space is formed between the intermediate wall 13 and the lower wall 14, and a support shaft 52 is provided so as to connect the left and right side walls 15 through this space. As shown in FIG. 3, a pair of first restricting walls 17 as first restricting portions are formed so as to extend upward from the lower wall 14 at a portion closer to the right (left of the drawing) of the lower wall 14. . Although not shown, a through hole is formed in the first restriction wall 17, and the support shaft 52 passes through the through hole. The upper end portion 21 of the rod 20 is rotatably coupled to the support shaft 52 between the pair of first restriction walls 17. In other words, the operation knob 10 is rotatably coupled to the rod 20 by a support shaft 52.

  As shown in FIG. 2, the rod 20 is a metal rod, and as an example of the first engaging portion, a connecting portion 25 having a flat bottom end is formed. A through hole 26 is formed in the coupling portion 25 (see FIG. 4).

  The lock mechanism 30 includes an operation unit 31 that is movable between an unlock position and a lock position, a latch 32 that can be engaged with and disengaged from the striker 55, and an interlocking link 33 that interlocks the operation unit 31 and the latch 32. ing. Since the lock mechanism 30 is publicly known, only the schematic configuration will be described. The operation unit 31 and the latch 32 are rotatably supported by the casing 39 of the lock mechanism 30. And the latch 32 is comprised so that the operation part 31 may be engaged so that the operation part 31 may be maintained in a lock release position in a lock release state. For example, the configuration disclosed in Japanese Patent Application Laid-Open No. 2006-0669330 or Japanese Patent Application Laid-Open No. 2008-254663 can be adopted as the lock mechanism 30.

  The wire 120 is a member provided separately from the rod 20 so that the operation unit 31 can be operated at a place different from the operation knob 10. As shown in FIG. 4, a ring 125 as an example of a second engagement portion is provided at the end of the wire 120 opposite to the sub lever 110. The ring 125 has a through hole 126.

  The operation unit 31, the rod 20, and the wire 120 are coupled by a support pin 40 provided on the operation unit 31. The support pin 40 includes a support shaft 41 and a restriction flange 42 provided at an intermediate portion of the support shaft 41. Further, one end portion of the support shaft 41 is a caulking portion 43 that is caulked. The restriction flange 42 and the caulking part 43 are a pair of second restriction parts. Between the restriction flange 42 and the crimping portion 43 of the support shaft 41, a ring 125, a washer 70, the coupling portion 25, and the operation portion 31 are engaged in this order from the restriction flange 42 side. The washer 70 is an example of a holding member, is provided between the ring 125 and the coupling portion 25, and holds an interval between the ring 125 and the coupling portion 25.

As shown in FIG. 3, the torsion spring 60 includes a coil portion 61 through which the support shaft 52 is inserted, a first arm 62, and a second arm 63. A distal end portion 62A of the first arm 62 is rounded into a U shape. The tip 62A is covered with an elastic body such as rubber up to the end 62B. The distal end 63A of the second arm 63 is also rounded into a U shape and is covered with an elastic body such as rubber (see hatching in FIG. 3). The distal end 62A of the first arm 62 is in contact with the lower surface of the intermediate wall 13 and is in contact with the inner surface of the left side wall 15. The distal end portion 63 </ b> A of the second arm 63 is engaged so as to wind around the rod 20. Further, the distal end 63B of the distal end portion 63A is folded back away from the linear shape portion of the second arm 63, thereby facilitating the work of assembling the U-shaped portion of the distal end portion 63A to the rod 20. .
In FIG. 2, the torsion spring 60 always applies an urging force to the operation knob 10 with respect to the rod 20 counterclockwise, that is, around the support shaft 52 to the side corresponding to the lock position of the operation portion 31.
Further, as shown in FIG. 3, the second arm 63 of the torsion spring 60 constantly urges the rod 20 toward the right first restriction wall 17. Thereby, the rod 20 is always in contact with the first restriction wall 17 on the right side in the axial direction of the support shaft 52, and rattling with the operation knob 10 is suppressed in the axial direction of the support shaft 52. .

The effect of the locking device 1 configured as described above will be described.
As shown in FIG. 2, when the lock mechanism 30 is in the locked state, the operation unit 31 is in the lock position, and the operation knob 10 is on the side corresponding to the lock position of the operation unit 31 by the torsion spring 60, that is, 2 is biased counterclockwise. And the attitude | position of the operation knob 10 is controlled because the lower wall 14 of the operation knob 10 contact | abuts to the stopper 51A. Since the operation knob 10 is urged counterclockwise by the torsion spring 60, the operation knob 10 is not lifted from the upper end surfaces of the lever base 51 and the seat back S1, and is stationary with a high-precision positional relationship with respect to the lever base 51. Can do.

  When the operation knob 10 is rotated clockwise from this locked state, the support shaft 52 pulls up the rod 20 and rotates the operation unit 31 counterclockwise. When the operation unit 31 is rotated counterclockwise, the latch 32 is rotated counterclockwise in the drawing, and is detached from the striker 55 as shown in FIG. At this time, the operation unit 31 is kept in the state of being moved upward by being caught by the latch 32. Therefore, the rod 20 is maintained in the state where it is raised, and the operation knob 10 is maintained in the state where it is rotated clockwise. Accordingly, the mark 53 is raised above the lever base 51 and directed forward, so that the user can be shown that the lock mechanism 30 is in the unlocked state.

  In this state, in the conventional lock device, the operation knob is rattled. However, in the lock device 1 of this embodiment, the torsion spring 60 urges the operation knob 10 counterclockwise. Does not rattle against the rod 20. As described above, since the second arm 63 urges the rod 20 toward the first restriction wall 17 on the right side of the torsion spring 60, the operation knob 10 moves the support shaft 52 against the rod 20. Does not rattle in the axial direction. For this reason, even if the vehicle is operated in the unlocked state, there is not much noise.

  Further, as described above, since the washer 70 maintains the distance between the ring 125 and the coupling portion 25, the distance between the ring 125 and the coupling portion 25 is maintained, and the lower end portion of the rod 20 is located with respect to the operation portion 31. Abnormal noise can be suppressed.

  Further, since the distal end portion 62A and the distal end portion 63A of the torsion spring 60 are covered with an elastic body, sound is generated at the contact portion between the distal end portion 62A and the operation knob 10 and the contact portion between the distal end portion 63A and the rod 20. It is possible to suppress the wear of the operation knob 10 and the rod 20.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention.

  For example, the operation knob is only required to be movable with respect to the sheet, and is not limited to being rotatable with respect to the sheet, and may be supported so as to be able to be lifted with respect to the sheet.

  The urging member does not always need to urge the operation knob against the first transmission member at all times, and it is sufficient that the urging member generates an urging force at least when the lock mechanism is in the unlocked state. However, in order to suppress rattling even in the locked state, it is desirable that the urging force is always generated regardless of the position of the operation knob. Further, the direction in which the biasing member biases the operation knob may be a direction corresponding to the unlocking position of the operation unit.

  In the above-described embodiment, the washer 70 is illustrated as an example of the holding member. However, the holding member may be any member as long as the member can be held so as to keep the distance between the first engagement portion and the second engagement portion.

  In the above-described embodiment, the support shaft 52 has been described as an independent component. However, the support shaft 52 may be configured integrally with the rod 20 or the operation knob 10.

  In the said embodiment, although the vehicle was illustrated as an example of a vehicle, this invention can also be applied to the sheet | seat of other vehicles, such as a ship and an aircraft.

  In the embodiment, the rod 20 is illustrated as an example of the first transmission member, but the first transmission member may be a wire.

DESCRIPTION OF SYMBOLS 1 Locking device 10 Operation knob 11 Boss 15 Side wall 17 1st restriction wall 20 Rod 21 Upper end part 25 Coupling part 30 Locking mechanism 31 Operation part 32 Latch 33 Interlocking link 40 Support pin 42 Restriction flange 43 Caulking part 52 Support shaft 53 Mark 55 Strike 60 Torsion Spring 62A Tip 63A Tip 70 Washer 110 Sub Lever 120 Wire 125 Ring S Rear Seat S1 Seat Back V Car Body

Claims (6)

A locking device provided on the seat for locking the seat to a vehicle,
At least an operation section movable between the unlock position and the lock position, and a latch that moves from the lock position to the unlock position to release the striker fixed to the vehicle. A locking mechanism configured to maintain the operating portion in the unlocked position in a state;
An operation knob supported movably with respect to the seat;
A first transmission member having one end coupled to the operation knob, the other end coupled to the operation unit, and transmitting the operation of the operation knob to the operation unit;
One end is engaged with the first transmission member, the other end is engaged with the operation knob, and at least when the lock mechanism is in the unlocked state, the operation knob is moved to a predetermined position with respect to the first transmission member. And a biasing member biasing in the direction.   The locking device according to claim 1, wherein the first transmission member is a link member that transmits an operation between the operation knob and the operation unit.   The lock device according to claim 1, wherein the operation knob is supported so as to be rotatable with respect to the seat.   The locking device according to claim 3, wherein the urging member urges the operation knob to a side corresponding to a lock position of the operation unit. A support shaft rotatably coupled to the operation knob and the first transmission member;
A first restricting portion for restricting movement of the first transmission member in the axial direction of the support shaft;
The biasing member applies a biasing force around the support shaft to the operation knob, one end abuts against the operation knob in the axial direction of the support shaft, and the other end connects the first transmission member to the first knob. The locking device according to any one of claims 1 to 4, wherein the locking device is biased toward the restricting portion.   The said biasing member has a coating | cover consisting of an elastic material in at least one of the part which contact | connects the said operation knob, and the part which contact | connects the said 1st transmission member, The Claim 1 characterized by the above-mentioned. The locking device as described.

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