JP2018161906A - Seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat slide device that can securely engage a locking member with an engagement hole regardless of a position of an upper rail.SOLUTION: The seat slide device comprises a plurality of locking members 30 having claws 32 engaging with engagement holes 23. These locking members 30 are provided such that they move all together to a direction separated from a lower rail 21 and can separately move to a direction approaching the lower rail. Furthermore, the claws 32 are formed with predetermined widths based on a length of the engagement hole 23 in a juxtaposing direction and are disposed at predetermined intervals based on the length of the engagement hole 23 in the juxtaposing direction.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a seat slide device for adjusting the position of a seat in a longitudinal direction of a vehicle.

  In general, a vehicle seat is provided with various angle / position adjustment mechanisms in accordance with the physique and driving posture of an occupant. For example, a seat slide device that adjusts the front-rear position of the seat is installed in many vehicle seats.

  As the seat slide device, for example, there is one in which an upper rail fixed to a seat is slid with respect to a lower rail fixed to a vehicle body. The seat slide device generally includes a lock member for regulating the slide of the seat in a state where the seat is adjusted to a predetermined position. Specifically, the lock member (lock arm) includes a plurality of claw portions (lock claw), and these claw portions are engaged with holes formed in the lower rail, thereby restricting the sliding of the seat. There are some (see, for example, Patent Documents 1 and 2).

JP 2007-1226095 A JP 2010-126082 A

  However, in the seat slide device having such a structure, when the lock member provided on the upper rail is operated at an appropriate position with respect to the hole (engagement hole) formed in the lower rail, the lock member becomes the engagement hole. Engagement restricts the movement of the upper rail. On the other hand, when the lock member is operated at a position deviated from the proper position, the lock member is not engaged with the engagement hole, and the movement of the upper rail is not restricted.

  By the way, the vehicle seat has a pair of seat rails arranged side by side in the left-right direction of the vehicle. Depending on the conditions when the seat is slid, the lock member engages with the engagement hole on one of the left and right seat rails, but the lock member does not engage with the engagement hole on the other side, so-called “single lock” A situation may occur. In such a single lock state, the sliding of the seat cannot be properly regulated.

  The present invention has been made in view of such circumstances, and an object thereof is to provide a seat slide device capable of appropriately engaging a lock member with an engagement hole regardless of the position of the upper rail. To do.

  One aspect of the present invention that solves the above problems is a lower rail that is fixed to a vehicle body and has a plurality of engagement holes arranged in parallel in the front-rear direction of the vehicle, and is fixed to the vehicle seat and can slide in the front-rear direction of the vehicle In the seat slide device, further comprising: an upper rail mounted on the lower rail; and a slide restricting member provided on the upper rail for restricting sliding of the upper rail. A plurality of locking members having engaging claws, wherein the locking members move integrally in a direction away from the lower rail and are individually movable in a direction approaching the lower rail; and The claw portion is formed with a predetermined width based on the length of the engaging holes in the juxtaposed direction and is based on the length of the engaging holes in the juxtaposed direction. In seat slide apparatus characterized by being arranged at regular intervals.

  Here, the length of the engagement holes in the juxtaposition direction is L, the interval between the engagement holes is 2L, the slide restricting member includes the three lock members, and the engagement holes It is preferable that the width of the claw portions in the juxtaposed direction is L / 2 and the interval between the claw portions of the adjacent lock members is 2N + L / 2 (N is a non-negative integer).

  Further, each lock member preferably includes two claw portions, and the interval between the two claw portions included in each lock member is preferably 2L.

  The engagement hole is provided on a side surface of the lower rail, the lock member is supported on the side of the lower rail so as to be rotatable in the vehicle width direction, and the claw portion is formed on the engagement hole. A rotation member that rotates the lock member between an engagement position to be engaged and a release position in which the engagement of the claw portion with the engagement hole is released; A support shaft on which the plurality of lock members are rotatably supported, a biasing member that individually biases each lock member toward the engagement position, and a support shaft that is provided on the support shaft and rotates the support shaft It is preferable that the contact member includes a contact member that contacts each lock member and moves the plurality of lock members toward the release position against the biasing force of the biasing member.

  According to the seat slide device according to the present invention, at least one of the plurality of lock members can always be engaged with the engagement hole regardless of the position where the lock member is operated. That is, when the seat is slid, a so-called one-lock state can be suppressed. Accordingly, the seat slide can be appropriately regulated.

It is the schematic which shows an example of the sheet | seat with which the seat slide apparatus which concerns on one Embodiment of this invention was mounted | worn. It is a disassembled perspective view which shows schematic structure of the slide rail which concerns on one Embodiment of this invention. It is a perspective view which shows the locking member which concerns on one Embodiment of this invention. It is a figure explaining movement of a lock member concerning one embodiment of the present invention. It is a figure explaining movement of a lock member concerning one embodiment of the present invention. It is a figure explaining the relationship between the locking member which concerns on one Embodiment of this invention, and an engagement hole. It is a figure explaining the engagement state with the lower rail of the locking member which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic diagram illustrating an example of a seat on which a seat slide device according to the present invention is mounted, and FIG. 2 is a diagram illustrating a schematic configuration of a slide rail that configures the seat slide device. It is a figure which shows this slide rail. FIG. 3 is a perspective view of the lock member. FIG. 4 is a cross-sectional view of the slide rail at a position corresponding to the lock member.

  As shown in the figure, a vehicle seat 1 constitutes, for example, a front seat of a vehicle, and a seat slide device 10 for adjusting the position of the seat 1 in the front-rear direction of the vehicle is provided at the bottom thereof. It has been.

  The seat slide device 10 includes a pair of slide rails 20 provided at both ends of the seat 1 in the vehicle width direction. The pair of slide rails 20 are arranged symmetrically in the vehicle width direction, but have the same configuration.

  Each slide rail 20 includes a lower rail 21 and an upper rail 22. The lower rail 21 is fixed to the vehicle body (vehicle floor) 100 and is disposed along the front-rear direction of the vehicle. The upper rail 22 is fixed to the bottom surface of the seat cushion 2 constituting the seat 1 and is slidably mounted on the lower rail 21. That is, the upper rail 22 slides along the lower rail 21 so that the seat 1 can move in the front-rear direction of the vehicle.

  In addition, a plurality of engagement holes 23 are provided in the side wall 21a of the lower rail 21 (in this embodiment, the side wall inside the seat 1 in the vehicle width direction) over a range in which the seat 1 slides in the front-rear direction of the vehicle. They are arranged in parallel at a predetermined interval.

  Each slide rail 20 includes a plurality of lock members (slide restricting members) 30 that engage with the engagement holes 23 and restrict the slide movement of the upper rail 22. In the present embodiment, each slide rail 20 includes three lock members 30 (30A, 30B, 30C). These three lock members 30 (30A, 30B, 30C) are arranged at predetermined intervals in the front-rear direction of the vehicle.

  As shown in FIG. 3, each lock member 30 includes a plate-like main body portion 31, a claw portion 32 provided on one end (lower end) side of the main body portion 31 and engaged with the engagement hole 23 described above, It has. The claw portion 32 is provided so as to protrude in a direction substantially orthogonal to the main body portion 31. That is, the lock member 30 is formed in a substantially L shape in a side view from the front side of the vehicle. Moreover, in this embodiment, each lock member 30 is provided with two claw parts 32, and these two claw parts 32 are provided at a predetermined interval.

  Further, the seat slide device 10 includes a rotation member (rotation mechanism) for rotating such a lock member 30. In the present embodiment, a support shaft 40 that functions as a rotating member, a biasing member 50, an operation lever 60, and a contact member 70 are provided.

  Each lock member 30 is rotatably supported by the support shaft 40. The support shaft 40 includes a main body portion 41 extending along the lower rail 21 and a bent portion 42 provided at a front end portion of the main body portion 41 on the vehicle front side, and each lock member 30 is a main body of the support shaft 40. The part 41 is rotatably supported.

  Each lock member 30 has a bearing portion 33 through which the support shaft 40 is inserted on the other end (upper end) side of the main body portion 31, and the bearing portion 33 is rotatably connected to the support shaft 40. Each lock member 30 is individually urged toward the lower rail 21 by an urging member 50 formed of, for example, a coil spring. That is, three urging members 50 corresponding to the respective lock members 30 are mounted on the support shaft 40, and the respective urging members 50 are individually urged toward the lower rail 21 by these three urging members 50.

  The support shaft 40 is fixed so as to be rotatable with respect to the upper rail 22. That is, the upper rail 22 is provided with a stay portion 24 that protrudes outside the lower rail 21 (inside the seat 1) in the vehicle width direction, and the support shaft 40 is provided at the tip of the stay portion 24. The bearing unit 25 is rotatably held.

  That is, each lock member 30 is fixed to the upper rail 22 via the support shaft 40. Therefore, when the upper rail 22 is slid (when the seat 1 is slid), the lock members 30 are also slid together with the upper rail 22.

  As shown in FIG. 4, the plurality of lock members 30 rotate the support shaft 40, and the engagement positions P <b> 1 at which the respective claw portions 32 engage with the engagement holes 23 and the engagement between the claw portions 32 are provided. It is configured to be swingable between the release position P2 where the engagement with the hole 23 is released.

  In the present embodiment, the movement of the upper rail 22 is regulated by the lock member 30 penetrating and engaging with the upper rail 22 together with the lower rail 21 at the engagement position P1 (FIG. 4 ( a)). That is, the insertion hole 26 is formed at a position corresponding to each claw portion 32 of the lock member 30 of the upper rail 22, and the tip end portion of the claw portion 32 engaged with the engagement hole 23 is inserted into the insertion hole 26. It has come to be.

  Thus, in the state where the lock member 30 is in the engagement position P1, the claw portion 32 of the lock member 30 penetrates and is engaged with the engagement hole 23 and the insertion hole 26, and the movement of the upper rail 22 (the movement of the seat 1). ) Is regulated.

  Then, the lock member 30 is moved from the engagement position P1 to the release position P2 by turning the support shaft 40 to one side (counterclockwise in this example) while the lock member 30 is in the engagement position P1. (See FIG. 4 (b)).

  Here, the structure for operating the position of the lock member 30 is not particularly limited, but in this embodiment, the position of the lock member 30 is operated by the operation lever 60. As shown in FIG. 2, an operation lever (lock member operation unit) 60 for operating the position of the lock member 30 is provided along with the pair of slide rails 20 on the lower side of the seat 1.

  For example, the operation lever 60 is formed in a substantially U shape in a plan view, and although not illustrated, both ends thereof are swingably connected to the frame of the seat 1 by support pins. The operation lever 60 is always urged toward the vehicle body 100 (downward) by a spring member or the like.

  Further, a part of the operation lever 60 is extended in the vehicle front-rear direction (a direction perpendicular to the bent portion 42) below the bent portion 42 provided at the tip of the support shaft 40 (FIG. 2). reference).

  Therefore, when the occupant moves the operation lever 60 upward, the operation lever 60 comes into contact with the bent portion 42 of the support shaft 40, and the bent portion 42 is pushed upward by the operation lever 60. The part 41 rotates. As the support shaft 40 rotates in this way, the lock member 30 moves from the engagement position P1 toward the release position P2.

  In the present embodiment, the support shaft 40 is provided with a plate-like contact member 70 at a position corresponding to each lock member 30. The contact member 70 is disposed on the lower rail 21 side of each lock member 30. Therefore, when the support shaft 40 rotates in accordance with the operation of the operation lever 60, the contact member 70 contacts the lock members 30, and all of the three lock members 30 resist the urging force of the urging member 50. Then, it moves to the release position P2 side (FIG. 4B). The contact member 70 may be provided corresponding to each of the lock members 30 or may be in contact with the three lock members 30.

  On the other hand, when the operation of the operation lever 60 is stopped in a state where the lock member 30 is in the release position P2 (when the occupant releases the operation lever 60), the urging force of the urging member 50 causes the urging force in FIG. As shown, the support shaft 40 rotates (in this example, rotates clockwise), and each lock member 30 moves from the release position P2 to the engagement position P1 side.

When the operation of the operation lever 60 is stopped, if the claw portion 32 is at a position corresponding to the engagement hole 23, the lock member 30 moves to the engagement position P1. That is, the lock member 30 moves to the engagement position P1, and the claw portion 32 is engaged with the engagement hole 23 and the insertion hole 26 (FIG. 4A). On the other hand, when the claw portion 32 is at a position deviated from the engagement hole 23, the lock member 30 does not rotate to the engagement position P1, as shown in FIG. 5, and the claw portion 32 does not move to the side wall 21a of the lower rail 21. It comes into contact.
Thus, in a state where the claw portion 32 is in contact with the side wall 21a of the lower rail 21, the movement of the upper rail 22 (movement of the seat 1) cannot be restricted.

  However, in the seat slide device 10 according to the present invention, the three lock members 30 move integrally in the direction away from the lower rail 21 (release position P2 side) and approach the lower rail 21 (engagement position). (P1 side) is provided so as to be individually movable, so that the movement of the upper rail 22 (movement of the seat 1) can be appropriately regulated regardless of the position of the seat 1.

  Specifically, the claw portion 32 of each lock member 30 is formed with a predetermined width based on the length of the engaging holes 23 in the juxtaposed direction, and the length of the engaging holes 23 in the juxtaposed direction is used as a reference. By disposing the claw portions 32 at the predetermined intervals, any one of the three lock members 30 (two claw portions 32) always has the engagement hole 23 and the insertion hole regardless of the slide position of the seat 1. 26 is engaged. Therefore, regardless of the position of the seat 1, the movement of the seat 1 can be appropriately regulated, and a so-called one-lock state can also be avoided.

  For example, as shown in FIG. 6, when the length of the engaging holes 23 in the juxtaposed direction is L, the interval between the engaging holes 23 is set to 2L, and the claw portions 32 in the juxtaposed direction of the engaging holes 23 It is preferable that the width is L / 2 and the interval between the claw portions 32 of the adjacent lock members 30 is 2N + L / 2 (N is a non-negative integer).

  In addition, the space | interval of the engagement hole 23 here is the length (pitch) between the centers of the adjacent engagement holes 23. FIG. Similarly, the interval between the claw portions 32 is the length (pitch) between the centers of the adjacent claw portions 32. Further, the interval between the claw portions 32 in FIG. 6 is an example of N = 1.

Further, when each lock member 30 includes two claw portions 32 as in the present embodiment, it is preferable to set the distance between the two claw portions 32 to 2L.
With this configuration, regardless of the position of the seat 1, any one of the three lock members 30 (two claw portions 32) is always engaged with the engagement hole 23 of the lower rail 21. In addition, two of the three lock members 30 are likely to be engaged with the lower rail 21 (a state where the claw portion 32 is engaged with the engagement hole 23). Therefore, the movement of the sheet 1 can be more appropriately regulated.

  For example, as shown in FIG. 7A, the lock member 30 is shown in a state where the two lock members 30A and 30B are engaged with the lower rail 21 (the claw portion 32 is engaged with the engagement hole 23). When slightly moved to the middle left, as shown in FIG. 7 (b), the engagement of the lock member 30A with the lower rail 21 is released, but the lock member 30B remains engaged with the lower rail 21. Is done. When the lock member 30 is further moved to the left in the figure, the two lock members 30B and 30C are engaged with the lower rail 21 as shown in FIG. When the lock member 30 is further moved to the left side in the drawing, the engagement of the lock member 30B with the lower rail 21 is released as shown in FIG. 7D, but the lock member 30C is engaged with the lower rail 21. It is maintained as it is.

  As described above, since any one of the lock members 30 is always engaged with the engagement hole 23 of the lower rail 21, the movement of the seat 1 can be appropriately controlled, and a so-called one-lock state is achieved. Nor.

  In this embodiment, the example in which the interval between the claw portions 32 of the adjacent lock members 30 is 2N + L / 2 (N = 1) has been described, but N may be a non-negative integer even if N = 0. Good. Even in such a configuration, regardless of the position of the seat 1, any one of the three locking members 30 is always engaged with the lower rail 21, and the movement of the seat 1 can be appropriately restricted. it can.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment. The present invention can be modified as appropriate without departing from the spirit of the present invention.
For example, in the above-described embodiment, the configuration in which each lock member includes two claw portions is illustrated, but each lock member may include one claw portion. Even in this case, when the length of the engaging holes in the juxtaposed direction is L, the interval between the engaging holes is 2L, the width of the claw portion in the juxtaposing direction of the engaging holes is L / 2, and adjacent. By setting the interval between the claw portions of the locking member to be 2N + L / 2 (N is a non-negative integer), the movement of the sheet can be appropriately restricted as described above.

  Moreover, in the above-mentioned embodiment, each claw part of the lock member is formed with a substantially constant width, but the tip of the claw part may be formed in a tapered shape. That is, the claw portion may be formed so that the width thereof becomes narrower toward the tip end side (the side opposite to the main body portion 31). Thereby, each nail | claw part becomes easy to enter an engagement hole.

  Further, in the above-described embodiment, the insertion hole is formed in the upper rail, and the claw portion of each lock member is engaged with the insertion hole together with the engagement hole. However, the insertion hole is not necessarily provided. Good. If the claw portion is engaged with the engagement hole, the movement of the sheet can be restricted.

DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 10 Seat slide apparatus 20 Slide rail 21 Lower rail 21a Side wall 22 Upper rail 23 Engagement hole 24 Stay part 25 Bearing part 26 Insertion hole 30 Locking member 31 Main body part 32 Claw part 33 Bearing part 40 Support shaft 50 Energizing Member 60 Operation lever 70 Contact member 100 Car body

Claims (4)

A lower rail having a plurality of engagement holes fixed to the vehicle body and arranged in parallel in the longitudinal direction of the vehicle;
An upper rail fixed to the vehicle seat and attached to the lower rail so as to be slidable in the longitudinal direction of the vehicle;
In a seat slide device comprising: a slide restricting member that is provided on the upper rail and restricts sliding of the upper rail;
The slide restricting member includes a plurality of lock members having claw portions that engage with the engagement holes,
The lock member is integrally movable in a direction away from the lower rail and is individually movable in a direction approaching the lower rail.
The claw portions are formed with a predetermined width based on the length of the engaging holes in the juxtaposed direction, and are arranged at predetermined intervals based on the length of the engaging holes in the juxtaposed direction. A seat slide device characterized by that. The seat slide device according to claim 1,
The length of the engaging holes in the juxtaposed direction is L, and the interval between the engaging holes is 2L,
The slide restricting member includes three lock members, and the width of the claw portion in the direction in which the engagement holes are arranged is L / 2.
And the space | interval of the said nail | claw part of the said adjacent lock member is 2N + L / 2 (N is a nonnegative integer), The seat slide apparatus characterized by the above-mentioned. The seat slide device according to claim 2,
Each locking member includes two claw portions, and the distance between the two claw portions included in each locking member is 2L. In the seat slide device according to any one of claims 1 to 3,
The engagement hole is provided on a side surface of the lower rail, and the lock member is supported on a side of the lower rail so as to be rotatable in a vehicle width direction,
A rotation member that rotates the lock member between an engagement position where the claw portion is engaged with the engagement hole and a release position where the engagement of the claw portion with the engagement hole is released. With
The rotation member includes a support shaft on which the plurality of lock members are rotatably supported;
A biasing member that biases each lock member individually toward the engagement position;
A contact member that is provided on the support shaft and makes contact with each lock member by rotating the support shaft, and moves the plurality of lock members to the release position side against the urging force of the urging member; A seat slide device comprising:

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