JP2017171163A - Seat slide device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat slide device for a vehicle that can be made more compact in a vertical direction.SOLUTION: The seat slide device for a vehicle comprises: a lock spring 20 which has an engagement part 23a capable of engaging a lower rail 2 while supported by both side wall parts 14 in an upper rail 3 to restrict the upper rail 3 from moving, and generates energizing force of a side where the engagement part 23a is made to engage the lower rail 2; and a release lever part 60 which rotates and presses the lock spring 20 to release the engagement with the lower rail 2 while having a fulcrum 62a at a position of abutting on a lid wall part 15 located more behind a seat than a lock groove 61 in a state in which a spring-side lock part 25 of the lock spring 20 is locked in the lock groove 61 in the upper rail 3. Within a range in which the release lever part 60 is held between the lock groove 61 and fulcrum 62a at least in a front-rear direction of the seat, the vertical position thereof includes a vertical position of the lock spring 20.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a vehicle seat slide device.

  Conventionally, as a vehicular seat slide device, what was indicated, for example in patent documents 1 is known. The vehicle seat slide device includes a lower rail that extends in the front-rear direction of the seat, an upper rail that is movably connected to the lower rail in the direction, a lock spring that can regulate the movement of the upper rail, and the lock spring. And a release lever (lever member) capable of transmitting the release operation force.

  The lower rail and the upper rail have a substantially U-shaped rail section whose opening sides face each other, and form a substantially rectangular space by their cooperation. The lock spring is basically supported by the upper rail so as to be accommodated in the upper rail, and has an engagement portion that restricts the movement of the upper rail by engaging with the lower rail. Note that the lock spring itself generates an urging force for engaging the engaging portion with the lower rail. The release lever is also rotatably supported by the upper rail so that it can be accommodated in the upper rail. The release lever is pressed against the urging force of the lock spring as the release operation force is input in one direction. It has a pressing part. The release lever is formed with a groove-like engaging portion that is engaged with the front end (spring engaging portion) of the lock spring that is in front of the seat. Thereby, the relative movement of the lock spring and the release lever in the front-rear direction of the seat is restricted.

Japanese Patent Laying-Open No. 2015-67142 (FIG. 3-4)

  By the way, in Patent Document 1, the release lever has its fulcrum set at a contact position with the upper surface of the upper rail, and the engagement with the lower rail is released by pressing the lock spring downward by the pressing portion. It is configured as follows. The entire release lever is positioned above the lock spring except for the latching position (locking portion) with the lock spring, and the upper rail is increased in size in the vertical direction.

  An object of the present invention is to provide a vehicle seat slide device that can be downsized in the vertical direction.

  A vehicle seat slide device that solves the above problem is connected to a lower rail so as to be movable in the front-rear direction of the seat, and connects a pair of side wall portions arranged in parallel in the width direction and the upper ends of both side wall portions in the width direction. An upper rail having a pair of support portions juxtaposed to each of the both side wall portions in the front-rear direction of the seat, and a state of being supported by the both support portions of the both side wall portions in the upper rail An engaging portion that extends in the front-rear direction of the seat and engages with the lower rail at a position sandwiched between the two support portions in the direction and can regulate the movement of the upper rail with respect to the lower rail; A lock spring that generates an urging force on the side that engages the lower rail with the lower rail, and a latch groove that is recessed upward are formed in front of the seat of the lock spring in the upper rail. In the state where the leading end of the door is hooked in the hooking groove, the contact position with the lid wall portion located behind the seat with respect to the hooking groove is pivotally supported, and input of the release operation force And a release lever that releases the engagement with the lower rail by pressing the lock spring with a pressing portion located behind the seat with respect to the fulcrum, and the release lever includes at least The vertical position of the lock spring includes the vertical position of the lock spring as long as it is sandwiched between the latching groove and the fulcrum in the longitudinal direction of the seat.

  According to this configuration, the release lever includes the lock spring at a position in the vertical direction at least in a range between the latch groove and the fulcrum in the front-rear direction of the seat. Therefore, for example, compared with a case where part or all of the vertical position of the lock spring is out of the range, the space for disposing the lock spring and the release lever required for the upper rail can be reduced in the vertical direction. And the said upper rail and by extension, the whole apparatus can be reduced in size in the vertical direction.

In the vehicle seat slide device, it is preferable that the release lever has a closed cross-sectional shape.
According to this configuration, the vertical dimension of the release lever can be further increased by ensuring sufficient bending rigidity without the need to erect the flange in the vertical direction as in the case of an open cross-sectional shape, for example. Can be reduced.

In the vehicle seat slide device, the release lever is preferably an integrally molded product with a loop handle that is operated and input by a user.
According to this configuration, the number of parts can be reduced because the release lever is an integrally molded product with the loop handle.

About the said vehicle seat slide apparatus, it is preferable that the said press part spreads planarly so that the inner wall surfaces of the said closed cross-section shape may closely_contact | adhere in the up-down direction.
According to this structure, the said press part can be shape | molded very simply by crushing the raw material of the said closed cross-sectional shape to an up-down direction.

  In the vehicle seat slide device, the second release operation force can be input to enter the upper rail from above the lid wall portion located behind the seat from the fulcrum to press the release lever. It is preferable that a second release lever having two pressing portions is provided, and that the release lever has a flat portion that spreads in a plane so as to face the second pressing portion.

  According to this configuration, when the second pressing portion enters the upper rail from above the lid wall portion and presses the release lever by the input of the second release operation force, the release lever (pressing portion) ) Is disengaged from the lower rail by pressing the lock spring. At this time, the release lever can be further stabilized by being pressed by the second pressing portion in the flat portion.

  The present invention has an effect that the size can be reduced in the vertical direction.

A side view showing a vehicular seat to which one embodiment of a vehicular seat slide device is applied. Sectional drawing which shows the structure about the vehicle seat slide apparatus of the embodiment. The disassembled perspective view which shows the structure about the vehicle seat slide apparatus of the embodiment. (A), (b) is a longitudinal cross-sectional view which shows the structure in the restriction | limiting state and the cancellation | release state of this restriction | limiting about the vehicle seat slide apparatus of the embodiment. (A), (b) is an enlarged view before and behind FIG. 4 (a). Sectional drawing along line 6-6 in FIG. Sectional drawing along line 7-7 in FIG.

Hereinafter, an embodiment of a vehicle seat slide device will be described. Hereinafter, the front-rear direction of the seat is referred to as “front-rear direction”.
As shown in FIG. 1, the lower rail 2 is fixed to the vehicle floor 1 so as to extend in the front-rear direction, and the upper rail 3 is connected to the lower rail 2 so as to be movable in the front-rear direction. ing.

  The lower rail 2 and the upper rail 3 are both arranged in a pair in the width direction (a direction perpendicular to the paper surface in FIG. 1), and here, the lower rail 2 and the upper rail 3 are arranged on the left side toward the front. The upper rails 3 are fixed and supported by a seat 5 that forms a seat for the occupant. The relative movement of the lower rails 2 and the upper rails 3 is basically in a restricted state, and a loop handle 6 is provided that extends in the width direction so as to straddle between the upper rails 3 and simultaneously releases the restricted state. ing. Further, an operation handle 7 for simultaneously releasing the restriction of the relative movement of the lower rails 2 and the upper rails 3 according to the loop handle 6 is rotatably connected to the seat 5.

  As shown in FIG. 2, the lower rail 2 is made of a plate material, and connects a pair of first side wall portions 11 extending in the vertical direction on both sides in the width direction and base ends (lower ends) of the first side wall portions 11 in the width direction. The bottom wall portion 12 is provided. A first flange 13 is continuously formed at the distal end (upper end) of each first side wall portion 11 so as to project inward in the width direction and further bend back to the proximal end side of the first side wall portion 11.

  Further, as shown in FIGS. 3 and 4 (a) and 4 (b), the longitudinal intermediate portion of each first flange 13 of the lower rail 2 is upward from the tip (lower end) with a predetermined interval in the direction. A plurality of notches 13a are formed, and a plurality of square-tooth-like locking claws 13b are formed between the adjacent notches 13a. Accordingly, the plurality of locking claws 13b are arranged in parallel in the longitudinal direction of the lower rail 2 with the predetermined interval.

  As shown in FIG. 2, the upper rail 3 is made of a plate material, and a second side wall portion 14 as a pair of side wall portions extending vertically between the first flanges 13 of the lower rail 2 and the lower rails of both the second side wall portions 14. 2 has a lid wall portion 15 that connects base ends (upper ends) spaced apart from each other in the width direction. Then, the second side wall portion 14 is folded back so that the front end (lower end) on the bottom wall portion 12 side protrudes outward in the width direction and is further surrounded by the first side wall portion 11 and the first flange 13. The flange 16 is continuously formed.

  That is, the lower rail 2 and the upper rail 3 each have a U-shaped rail section whose opening sides face each other, and are prevented from coming off in the vertical direction mainly by engagement of the first flange 13 and the second flange 16. . The rail cross section formed by the lower rail 2 and the upper rail 3 is a so-called box shape having a rectangular shape. The lower rail 2 forms a space S in cooperation with the upper rail 3.

  As shown in FIGS. 3 and 4 (a) and 4 (b), a plurality of (three) insertion holes 14a in the longitudinal direction (front-rear direction) are provided at the lower end of each second side wall portion 14 at the predetermined interval. Are formed to open in the width direction. Further, a plurality (three) of insertion holes 16a are formed in each second flange 16 in the longitudinal direction (front-rear direction) so as to open in the width direction with the predetermined interval. These insertion holes 14a and 16a have the same position in the front-rear direction so as to face each other in the width direction, and their opening widths in the vertical direction are set to be equal to each other.

Each second side wall portion 14 is formed with a front support portion 14b and a rear support portion 14c cut and raised in front of and behind the plurality of insertion holes 14a.
A pair of left and right rolling members 18 are interposed between the lower ends of both the second flanges 16 and the bottom wall portion 12 facing them, and the upper ends of both the second flanges 16 and the second facing each other. A pair of left and right rolling members 19 are interposed between the one flange 13. The upper rail 3 is supported so as to be slidable in the front-rear direction with respect to the lower rail 2 in a state where the rolling members 18 and 19 roll with the lower rail 2.

  A lock spring 20 is supported on the upper rail 3 so as to be basically accommodated therein. The lock spring 20 engages with the lower rail 2 to function as a lock member that restricts the movement of the upper rail 3 with respect to the lower rail 2 at an appropriate position, and to generate an urging force that maintains the state of the restriction. It is a member having both functions as a member.

  That is, the lock spring 20 is formed in a substantially annular shape with a single wire, and has a first linear portion 21 extending in the width direction between the second side wall portions 14, and the first linear portion. It has a pair of 2nd linear parts 22 extended toward the front from the both ends of 21, and also has a pair of elastic deformation parts 23 connected to the front end of both these 2nd linear parts 22. Each elastic deformation portion 23 has a plurality (three) of substantially rectangular engaging portions 23a protruding in the width direction with the predetermined interval. The lock spring 20 has a pair of third linear portions 24 extending forward from the front ends of the two elastically deformable portions 23 and connects the front ends of the third linear portions 24 in the width direction. A spring side latching portion 25 is provided.

  The lock spring 20 has the first linear portion 21 pivotally supported by the rear support portions 14c of the second side wall portions 14 and each third line by the front support portions 14b of the second side wall portions 14. The middle part of the shape part 24 in the front-rear direction is supported. At this time, the plurality of engaging portions 23a of each elastic deformation portion 23 are opposed to the plurality of insertion holes 14a of each second side wall portion 14 and the plurality of insertion holes 16a of each second flange 16 in the width direction. Has been inserted. That is, the lock spring 20 is exposed to the outside of the upper rail 3 only at the tip of each engaging portion 23a.

  As shown in FIGS. 6 and 7, the lock spring 20 expands in a substantially horizontal direction in its elastic return state (generally in a free state) and is positioned near the upper ends of the insertion holes 14a and 16a in the vertical direction. Yes. At this time, the plurality of engaging claws 13 b adjacent to each first flange 13 of the lower rail 2 are engaged with the plurality of engaging portions 23 a of each elastic deformation portion 23. Thus, the movement of the upper rail 3 with respect to the lower rail 2 is restricted by the engaging claw 13b being engaged with the engaging portion 23a inserted into each of the insertion holes 14a, 16a. On the other hand, as shown by a two-dot chain line in FIG. 7, when the locking claw 13 b is removed from the engaging portion 23 a that has moved downward due to the elastic deformation of the elastic deformation portions 23 in the vertical direction, the upper rail 3 with respect to the lower rail 2 is removed. Movement restrictions are lifted.

  As shown in FIG. 3, the loop handle 6 is made of, for example, a metal cylinder, and each of both end portions in the width direction is a release lever portion 60 as a release lever that extends rearward so as to face each upper rail 3. Configure. It goes without saying that the release lever portion 60 is an integrally molded product with the loop handle 6.

  The release lever portion 60 is basically set so that the dimension in the width direction of the release lever portion 60 is such that the distance between the third linear portions 24 of the lock spring 20 in that direction is small. The release lever portion 60 is formed with a substantially U-shaped retaining groove 61 whose bottom surface is recessed upward at the middle portion in the front-rear direction, and a fulcrum protruding upward behind the retaining groove 61. A portion 62 is formed. The release lever portion 60 forms an input portion 63 having a substantially square cross section in front of the fulcrum portion 62 and forms an output portion 64 having a substantially concave cross section in the rear of the fulcrum portion 62. That is, as shown in FIG. 6, the output portion 64 is formed with a streak-shaped guide groove 64 a having a central portion in the width direction of the upper surface recessed downward over substantially the entire length thereof. The bottom wall of the guide groove 64a forms a flat portion 64b formed into a flat shape.

  As shown in FIG. 4A, the release lever portion 60 is supported by the lock spring 20 by inserting and latching the spring side latch portion 25 of the lock spring 20 into the latch groove 61 communicating in the width direction. Has been. At this time, the release lever portion 60 has a posture in which the fulcrum 62a, which is the apex of the fulcrum portion 62, abuts on the lower surface of the upper rail 3 (the lid wall portion 15), so that the fulcrum 62a can rotate in the vertical direction around the fulcrum 62a. Is held. This fulcrum 62a is located in front of both front support portions 14b. In addition, the release lever portion 60 is disposed at a position that substantially coincides with the lower end of the upper rail 3 in the vertical direction at the front end of the upper rail 3, and has a play that allows clockwise rotation in the figure about the fulcrum 62 a above the release lever portion 60. Is set between the lid wall portion 15 and the lid wall portion 15. Hereinafter, the posture of the release lever portion 60 (loop handle 6) at this time is also referred to as an “initial state”, and the posture when the release lever portion 60 (loop handle 6) is lifted until it contacts or approaches the lid wall portion 15. Is also referred to as “release operation state”.

  Here, as shown in FIG. 5A, the release lever portion 60 in the initial state is in the range of being sandwiched between the latching groove 61 and the fulcrum 62a (fulcrum portion 62) in the front-rear direction. It is sandwiched between the three linear portions 24. The release lever portion 60 includes the vertical position of the lock spring 20 in the vertical direction within the range in the front-rear direction.

  In addition, as shown in FIG. 5B, the release lever portion 60 in the initial state similarly includes the vertical position of the lock spring 20 in the vertical direction over the substantially entire length of the output portion 64. ing. A pressing portion 65 that is widened in the width direction by crushing the release lever portion 60 in the vertical direction is connected to the rear end of the output portion 64. The pressing portion 65 has a width dimension in which the distance between the third linear portions 24 of the lock spring 20 in the direction is set to be large, and as shown in FIG. In contact with this. As described above, the elastic deformation portion 23 is positioned in the vicinity of the upper ends of the insertion holes 14a and 16a in the vertical direction.

  When the loop handle 6 is lifted by the user to enter the release operation force so as to input the release operation force, the release lever portion 60 rotates clockwise with the fulcrum 62a as a fulcrum, so that the pressing portion 65 moves downward. Move to. At this time, the lock spring 20 rotates counterclockwise in the drawing around the first linear portion 21 (both rear support portions 14c) while elastically deforming both elastic deformation portions 23 in the vertical direction as described above. Then, the engaging portion 23a is removed from the locking claw 13b. Thereby, the movement restriction | limiting of the upper rail 3 with respect to the lower rail 2 is cancelled | released.

  As shown in FIG. 5 (b), the lid wall 15 of the upper rail 3 is formed with an insertion hole 15a that opens in the vertical direction in front of it adjacent to the pressing portion 65 (behind the fulcrum 62a). ing. The insertion hole 15a is, for example, a substantially saddle-shaped operation handle press as a second pressing portion of the operation handle release lever 70 as a second release lever rotatably supported on the upper rail 3 It arrange | positions on the rotation locus of the part 70a. The operation handle pressing portion 70 a enters the upper rail 3 through the insertion hole 15 a as the operation handle release lever 70 rotates, and presses the output portion 64 (flat portion 64 b) of the release lever portion 60 downward. At this time, the release lever 60 rotates clockwise in the figure with the fulcrum 62a as a fulcrum, so that the pressing part 65 moves downward, and the movement restriction of the upper rail 3 with respect to the lower rail 2 is released as described above.

  Here, the operating handle release lever 70 is mechanically linked to the operating handle 7 via an appropriate linkage mechanism (for example, a cable). When the operation handle 7 is operated by the user to input the second release operation force, the operation handle pressing portion 70a moves down the output portion 64 (flat portion 64b) of the release lever portion 60 as described above. The movement restriction of the upper rail 3 with respect to the lower rail 2 is released by pressing to the lower rail 2.

Next, the effect of this embodiment will be described.
(1) In the present embodiment, the release lever portion 60 includes the lock spring 20 in the vertical direction at least in a range sandwiched between the latching groove 61 and the fulcrum 62a (fulcrum portion 62) in the front-rear direction. Therefore, for example, compared to a case where a part or all of the position of the lock spring 20 in the vertical direction is out of the range, the space for disposing the lock spring 20 and the release lever portion 60 required for the upper rail 3 can be reduced in the vertical direction. And the upper rail 3, and by extension, the whole apparatus can be reduced in size in the vertical direction. Thereby, the mounting property to a vehicle can be improved more.

  (2) In the present embodiment, the release lever portion 60 has a closed cross-sectional shape. Accordingly, for example, sufficient bending rigidity is ensured without the need to erect a flange in the vertical direction as in the case of an open cross-sectional shape, whereby the vertical dimension of the release lever portion 60 can be further reduced. .

  (3) In this embodiment, since the release lever part 60 is an integrally molded product with the loop handle 6, the number of parts can be reduced. In addition, basically, the release lever portion 60 can be molded while maintaining the closed cross-sectional shape of the loop handle 6, so that the number of manufacturing steps can be suppressed.

  (4) In the present embodiment, the pressing portion 65 spreads in a planar shape so that the inner wall surfaces of the closed section shape are in close contact with each other in the vertical direction, so that the material having the closed section shape is crushed in the vertical direction. The pressing portion 65 can be formed.

  Moreover, the pressing part 65 can press both elastic deformation parts 23 more reliably by being expanded in the width direction by the amount crushed in the vertical direction. Alternatively, the pressing portion 65 can be downsized in the vertical direction by reducing the dimension in the direction by the amount crushed in the vertical direction. Or the press part 65 can fully ensure the bending rigidity because it has the plate | board thickness for two sheets in the said direction substantially, when the inner wall surfaces of closed cross-section shape contact | adhere in the up-down direction.

  (5) In the present embodiment, when the operation handle pressing portion 70a enters the upper rail 3 from above the lid wall portion 15 and presses the release lever portion 60 by the input of the second release operation force, the release lever When the portion 60 (pressing portion 65) presses the lock spring 20, the engagement with the upper rail 3 is released. At this time, the release lever portion 60 can be further stabilized in posture by being pressed by the operation handle pressing portion 70a in the flat portion 64b (output portion 64). For example, the possibility that the operation handle pressing portion 70a and the release lever portion 60 are shifted in the width direction and the operation becomes unstable can be further reduced.

In particular, since the flat portion 64b is the bottom wall of the guide groove 64a, the possibility that the operating handle pressing portion 70a and the release lever portion 60 are shifted in the width direction can be further reduced.
In addition, you may change the said embodiment as follows.

  In the above-described embodiment, the guide groove 64a of the output part 64 may be omitted, and a flat part formed into a flat shape over substantially the entire length in the width direction of the output part 64 may be employed. Alternatively, the output unit 64 may have a curved surface shape in which the flat portion itself is omitted.

In the embodiment, the operation handle 7 and the operation handle release lever 70 related to the input of the second release operation force may be omitted.
-In the said embodiment, as long as it straddles between the both elastic deformation parts 23 in the width direction, the press part of a hollow closed cross-sectional shape may be sufficient. Or as long as sufficient intensity | strength is ensured, the press part which opened the closed cross-sectional shape to the width direction may be sufficient.

In the embodiment, the release lever portion 60 may be a member (release lever) that is separate from the loop handle 6.
In the embodiment, the release lever portion 60 may have an open cross-sectional shape.

  In the embodiment, the lower rail 2 and the upper rail 3 (vehicle seat slide device) may be arranged one by one with respect to the seat 5, or may be arranged by three or more each. It may be.

  2 ... Lower rail, 3 ... Upper rail, 5 ... Seat, 6 ... Loop handle, 14 ... Second side wall (side wall), 14b ... Front support (support), 14c ... Back support (support), 15 ... Lid wall part, 15a ... insertion hole, 20 ... lock spring, 23 ... elastic deformation part, 223a ... engagement part, 4 ... third linear part, 25 ... spring side latching part (front end in front of seat), 60 ... release lever part (release lever), 61 ... latching groove, 62 ... fulcrum part, 62a ... fulcrum, 64b ... flat part, 65 ... pressing part, 70 ... release lever for operation handle (second release lever), 70a ... Operation handle pressing portion (second pressing portion).

Claims (5)

A pair of side wall portions connected to the lower rail so as to be movable in the front-rear direction of the seat, a lid wall portion connecting the upper ends of both side wall portions in the width direction, and the front-rear direction of the seat An upper rail having a pair of support portions arranged in parallel on both side wall portions;
The seat is extended in the front-rear direction of the seat while being supported by the both support portions of the both side wall portions in the upper rail, and engages with the lower rail at a position sandwiched between the support portions in the direction. A lock spring that has an engaging portion that can regulate the movement of the upper rail, and that generates a biasing force on the side that engages the engaging portion with the lower rail;
The lid wall is formed with a latching groove that is recessed upward, and is located behind the seat with respect to the latching groove with the front end of the lock spring seated on the latching groove in the upper rail. The lock spring is pressed by a pressing portion located behind the seat with respect to the fulcrum in accordance with the rotation in one direction by the input of the release operation force. A release lever for releasing the engagement with the lower rail,
The vehicular seat slide device, wherein the release lever includes a vertical position of the lock spring in a range that is sandwiched between at least the latching groove and the fulcrum in the front-rear direction of the seat. The vehicle seat slide device according to claim 1,
The release lever is a vehicle seat slide device having a closed cross-sectional shape. The vehicle seat slide device according to claim 2,
The release lever is a vehicle seat slide device that is an integrally formed product with a loop handle that is operated and input by a user. The vehicle seat slide device according to claim 2 or 3,
The said press part is a vehicle seat slide apparatus which spreads planarly so that the inner wall surfaces of the said closed cross-section shape may closely_contact | adhere in the up-down direction. In the vehicle seat slide device according to any one of claims 2 to 4,
A second pressing portion that can enter the upper rail from above the lid wall portion located behind the seat with respect to the fulcrum and press the release lever by inputting a second releasing operation force. Release lever,
The said release lever is a vehicle seat slide apparatus which has the flat part which spreads in planar shape facing the said 2nd press part.

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