WO2017163519A1

WO2017163519A1 - Seat slide device for vehicle

Info

Publication number: WO2017163519A1
Application number: PCT/JP2016/088560
Authority: WO
Inventors: 幸佑谷口; 登美男松藤
Original assignee: アイシン精機株式会社
Priority date: 2016-03-24
Filing date: 2016-12-22
Publication date: 2017-09-28
Also published as: JP2017171163A

Abstract

Provided is a seat slide device for a vehicle, the seat slide device comprising a lower rail (2) and an upper rail (3), which are movable relative to each other. The upper rail (3) has a pair of sidewall sections (14, 14), a cover wall section (15), and support sections (14b, 14c) provided to both sidewall sections (14, 14). A lock spring (20) having an engagement section (23a) engaging with the lower rail (2) is supported within the upper rail (3) by the support sections (14b, 14c). An unlocking lever (60) has: an engagement groove (61) with which the front end of the lock spring (20) is engaged; a fulcrum point (62a) located behind the engagement groove (61) and in contact with the cover wall section (15); and a pressing section (65) located behind the fulcrum point (62a). When caused to pivot in one direction by the input of unlocking operation force, the unlocking lever (60) presses at the pressing section (65) against the lock spring (20) to unlock the engagement of the lock spring (20) with the lower rail (2). The unlocking lever (60) is disposed so that, within the range between the engagement groove (61) and the fulcrum point (62a), the vertical position of the unlocking lever (60) will include the vertical position of the lock spring (20).

Description

Vehicle seat slide device

The present invention relates to a vehicle seat slide device.

Conventionally, as a vehicle seat slide device, for example, a device described in Patent Document 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, a lock spring that can regulate the movement of the upper rail, and a release operation on the lock spring. And a release lever (lever member) capable of transmitting force.

The lower rail and the upper rail have a substantially U-shaped cross section in which the opening sides face each other, and a substantially rectangular space is formed by the cooperation of both rails. 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. 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 locking portion on which the front end (spring hanging portion) of the lock spring is hooked. 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

In Patent Document 1, the release lever has a rotation fulcrum that contacts the upper surface of the upper rail, and the lock spring is pressed downward by the pressing portion so that the engagement of the lock spring with the lower rail is released. It is configured. 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 enlarged in the vertical direction accordingly.

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-mentioned problems is a lower rail, an upper rail that is connected to the lower rail so as to be movable in the front-rear direction of the seat, and a pair of side wall portions arranged side by side in the width direction, both side walls A lid wall part that connects the upper ends of the parts in the width direction, and an upper rail having a pair of support parts arranged side by side in the front-rear direction of the seat on each side wall part, and the both side wall parts in the upper rail A lock spring that extends in the front-rear direction of the seat while being supported by the support portion, and engages with the lower rail at a position sandwiched by the support portion in the front-rear direction of the seat. A lock sp having an engaging portion configured to restrict the movement of the upper rail and biasing the engaging portion to engage the lower rail Has a ring, the lock grooves recessed upward, and a release lever distal end of the lock spring is hooked on the hooking groove. The release lever includes a fulcrum that is positioned rearward of the latching groove and is in contact with the lid wall portion, and a pressing portion that is positioned rearward of the fulcrum. The release lever is disposed in the upper rail so as to be rotatable about the fulcrum. The release lever is configured to release the engagement of the lock spring with the lower rail by pressing the lock spring with the pressing portion as the release lever is turned in one direction by the input of the release operation force. The release lever is disposed such that the vertical position of the release lever includes the vertical position of the lock spring in a range between the latching groove and the fulcrum in the front-rear direction of the seat.

A side view showing a vehicular seat to which one embodiment of a vehicular seat slide device is applied. Sectional drawing of the vehicle seat slide apparatus of FIG. The disassembled perspective view of the vehicle seat slide apparatus of FIG. (A), (b) is a longitudinal cross-sectional view which shows a regulation state and a cancellation | release state, respectively about the vehicle seat slide apparatus of FIG. (A) is an enlarged view of the front side part of Fig.4 (a), (b) is an enlarged view of the rear side part of Fig.4 (a). FIG. 6 is a cross-sectional view taken along line 6-6 in FIG. FIG. 7 is a cross-sectional view taken 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 simply 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.

Note that two pairs of the lower rail 2 and the upper rail 3 are arranged in the vehicle width direction (a direction orthogonal to the paper surface in FIG. 1), and here, a pair arranged on the left side toward the front is shown. A seat 5 on which an occupant sits is fixed and supported on both upper rails 3. The relative movement of both upper rails 3 with respect to both lower rails 2 is basically in a restricted state. The loop handle 6 extends in the vehicle width direction so as to extend between the upper rails 3. By operating the loop handle 6, the relative movement restriction state between the two pairs of the lower rail 2 and the upper rail 3 is controlled. It can be canceled at the same time. Similarly to the loop handle 6, an operation handle 7 is also connected to the seat 5 to freely release the relative movement restriction state of the two pairs of the lower rail 2 and the upper rail 3.

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 that extends inward in the width direction and is further folded back toward the base end of the first side wall portion 11 is continuously formed at the distal end (upper end) of each first side wall portion 11.

Further, as shown in FIGS. 3, 4 (a) and 4 (b), a plurality of first flanges 13 of the lower rail 2 are arranged at predetermined intervals in the longitudinal direction at the longitudinal intermediate portions thereof. A notch 13a is formed. The notch 13a is formed by cutting the first flange 13 upward from its tip (lower end). A portion between each adjacent notch 13a forms a square tooth-like locking claw 13b. Accordingly, the plurality of locking claws 13 b are arranged in parallel in the longitudinal direction of the lower rail 2 with a 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 in the vertical direction between the first flanges 13 of the lower rail 2, and a base of the second side wall portions 14. A lid wall portion 15 that connects ends (upper ends) in the width direction is provided. Then, the second flange 16 is extended at the front end (lower end) of each second side wall portion 14 so as to extend outward in the width direction and further enter the space between the first side wall portion 11 and the first flange 13. Are continuously formed.

That is, the lower rail 2 and the upper rail 3 each have a U-shaped cross section in which the 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, 4 (a), and 4 (b), a plurality (three) of insertion holes 14 a that open in the width direction of the upper rail 3 are formed at the lower ends of the second side wall portions 14. These insertion holes 14 a are arranged at a predetermined interval in the longitudinal direction (front-rear direction) of the upper rail 3. Each of the second flanges 16 is formed with a plurality of (three) insertion holes 16a that open in the width direction of the upper rail 3, and these insertion holes 16a are arranged at predetermined intervals in the longitudinal direction (front-rear direction) of the upper rail 3. ing. These

insertion holes

14a and 16a have the same arrangement interval and arrangement position in the longitudinal direction (front-rear direction) of the upper rail 3 so as to be opposed to each other in the width direction of the upper rail 3, and further open in the vertical direction. The widths are also set equal to each other. Each

insertion hole

14a, 16a has two engagement grooves arranged at the same interval as the arrangement interval of the notches 13a of the lower rail 2 in the upper portion thereof (see FIG. 5B).

In each second side wall portion 14, a front support portion 14 b and a rear support portion 14 c are cut and raised at the front and rear of the plurality of insertion holes 14 a, respectively.
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 first flanges facing these. 13, a pair of left and right rolling members 19 are interposed. The upper rail 3 is supported by the rolling

members

18 and 19 so as to be slidable in the front-rear direction with respect to the lower rail 2.

The lock rail 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 endlessly with a single wire, has a first linear portion 21 extending in the width direction between both 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 includes a plurality (three) of substantially rectangular engaging portions 23a that are arranged at the same interval as the arrangement interval of the

insertion holes

14a and 16a and project in the width direction. 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.

In the lock spring 20, the first linear portion 21 is pivotally supported by the rear support portions 14 c of the second side wall portions 14, and the third linear portions are supported by the front support portions 14 b of the second side wall portions 14. 24 intermediate portions in the front-rear direction are 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 spreads 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. That is, the substantially rectangular engaging portions 23a are engaged with two engaging grooves provided in the upper portions of the

insertion holes

14a and 16a (see FIG. 5B). In this state, the plurality of engaging claws 13b of the first flanges 13 of the lower rail 2 are engaged with the plurality of engaging portions 23a of the elastic deformation portions 23, respectively. Specifically, as shown in FIG. 5B, each locking claw 13b is inserted into each of the substantially rectangular engaging portions 23a. In this way, the movement of the upper rail 3 with respect to the lower rail 2 is restricted by the engagement of the locking claws 13b with the engaging portions 23a inserted into the

insertion holes

14a and 16a. On the other hand, as shown by a two-dot chain line in FIG. 7, when the engaging portion 23 a moves downward and is disengaged from the locking claw 13 b along with the elastic deformation in the vertical direction of the two elastic deforming portions 23, The movement restriction is canceled.

As shown in FIG. 3, the loop handle 6 is made of a hollow member having a closed cross-sectional shape (in other words, a closed-loop cross-sectional shape), for example, a metal cylinder, and each of both end portions in the width direction is attached to each upper rail 3. The release lever part 60 as a release lever which opposes and extends back is comprised. The release lever portion 60 is an integrally molded product with the loop handle 6. In FIG. 3, only the release lever portion 60 corresponding to the upper rail 3 on one side of the loop handle 6 is shown.

The release lever portion 60 is basically set such that its width direction dimension is smaller than the distance between the third linear portions 24 of the lock spring 20 (see FIG. 6). The release lever portion 60 has a retaining groove 61 having a substantially U-shaped cross section. The locking groove 61 is formed on the lower surface of the release lever portion 60 in the front-rear direction intermediate portion (longitudinal direction intermediate portion) of the release lever portion 60, and is recessed upward, that is, opened downward. The locking grooves 61 are also open on both sides of the release lever portion 60 in the width direction. The release lever portion 60 also has a fulcrum portion 62 that curves so as to bulge upward behind the latching groove 61. The release lever portion 60 has an input portion 63 having a substantially square cross section in front of the fulcrum portion 62 and 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 64a in which the central portion in the width direction of the upper surface of the output portion 64 is 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 when the spring side latch portion 25 of the lock spring 20 is inserted and latched in the latch groove 61. At this time, the release lever portion 60 rotates in the vertical direction around the fulcrum 62a by the fulcrum (rotation fulcrum) 62a that is the apex of the fulcrum 62 coming into contact with the lower surface of the upper rail 3 (lid wall portion 15). The posture is held freely. The fulcrum 62a is located in front of both front support portions 14b of the upper rail 3. Further, at the front end of the upper rail 3, the release lever portion 60 is disposed at a position substantially coincident with the lower end of the upper rail 3 in the vertical direction, and a fulcrum is provided between the release lever portion 60 and the lid wall portion 15 thereabove. A play space allowing the clockwise rotation of the release lever portion 60 centering on 62a in FIG. 4A is secured. 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”.

As shown in FIG. 5A, the release lever portion 60 in the initial state is in the range between the latching groove 61 and the fulcrum 62a (fulcrum portion 62) in the front-rear direction. It is arranged between the shaped parts 24. The release lever portion 60 is arranged so that its own vertical position D1 includes the vertical direction position D2 of the lock spring 20 within the range in the front-rear direction.

Further, as shown in FIG. 5B, in the release lever portion 60 in the initial state, the output portion 64 includes the vertical position of the lock spring 20 over its substantially entire length. Are arranged as follows. At the rear end of the output portion 64, a pressing portion 65 that is widened in the width direction by pressing the release lever portion 60 in the vertical direction is provided. The flat pressing portion 65 has a width dimension that is set to be larger than the distance between the third linear portions 24 of the lock spring 20. As shown in FIG. In contact with this. As described above, when the release lever portion 60 is in the initial state, 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 and the loop handle 6 enters the release operation state, the release lever portion 60 rotates about the fulcrum 62a in the clockwise direction in FIG. 5B. Thus, the pressing portion 65 moves downward and presses both elastically deforming portions 23 of the lock spring 20 downward. Therefore, both elastically deforming portions 23 are rotated counterclockwise in FIG. 5B around the first linear portions 21 (both rear support portions 14c) while elastically deforming in the vertical direction, whereby FIG. As shown in b), the engaging portion 23a is disengaged from the locking claw 13b. As a result, the engagement of the lock spring 20 with the lower rail 2 is released, and the movement restriction of the upper rail 3 with respect to the lower rail 2 is released.

As shown in FIG. 5B, the lid wall 15 of the upper rail 3 has an insertion hole opened in the vertical direction behind the fulcrum 62a, specifically adjacent to the pressing portion 65 and in front of the pressing portion 65. 15a is formed. On the upper rail 3, there is provided an operation handle release lever 70 as a second release lever rotatably supported by the upper rail 3, and the operation handle release lever 70 has a substantially bowl-like shape as a second pressing portion. The operating handle pressing portion 70a. The insertion hole 15a is disposed on the turning locus of the operation handle pressing portion 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. Along with this, the release lever portion 60 rotates about the fulcrum 62a in the clockwise direction in FIG. 5B, so that the pressing portion 65 moves downward, and the movement restriction of the upper rail 3 with respect to the lower rail 2 is restricted as described above. Canceled.

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 this embodiment, the release lever portion 60 has a vertical position D1 of the lock spring 20 above and below the lock spring 20 at least in the range between the latch groove 61 and the fulcrum 62a (fulcrum portion 62) in the front-rear direction. It arrange | positions so that the position D2 of a direction may be included. Therefore, for example, compared with a case where a part or all of the vertical position of the lock spring 20 deviates from the vertical position of the release lever part 60 in the range, the lock spring 20 and the release lever part 60 required for the upper rail 3 are required. 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 the vehicle of a seat slide apparatus can be improved more.

(2) In the present embodiment, the release lever portion 60 is formed of a hollow member such as a tube material and has a closed cross-sectional shape (in other words, a closed-loop cross-sectional shape). Thus, for example, the vertical dimension of the release lever portion 60 is ensured by ensuring sufficient bending rigidity without the need to erect the flange in the vertical direction as in the case where the release lever portion has an open cross-sectional shape. Can be further reduced.

(3) In the present embodiment, since the release lever portion 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 as to have inner wall surfaces that face each other in the vertical direction and are in close contact with each other. Therefore, the pressing part 65 can be very easily formed by crushing the material having the closed cross-sectional shape in the vertical direction.

Moreover, since the pressing part 65 is widened in the width direction by the amount crushed in the vertical direction, both elastically deforming parts 23 can be pressed more reliably. Alternatively, the pressing portion 65 can be reduced in size in the vertical direction by reducing the size in the vertical direction by the amount crushed in the vertical direction. Or the press part 65 will have the thickness of the wall part for two sheets in an up-down direction substantially, when inner wall surfaces closely_contact | adhere in the up-down direction, and can fully ensure the bending rigidity.

(5) In the present embodiment, when the second release operation force is input to the operation handle release lever 70, the operation handle pressing portion 70 a enters the upper rail 3 from above the lid wall portion 15 to release the release lever portion 60. Is pressed, the release lever portion 60 (pressing portion 65) presses the lock spring 20, so that the engagement of the lock spring 20 with the upper rail 3 is released. 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 in a flat shape may be adopted over substantially the entire length of the output part 64 in the width direction. 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 that receives the second release operation force, the operation handle release lever 70, and the like may be omitted.
-In above-mentioned embodiment, as long as the press part 65 straddles between the both elastic deformation parts 23 in the width direction, it may not have flatness but may have a hollow closed cross-sectional shape. Or as long as sufficient intensity | strength is ensured, the press part 65 may have the shape which opened the closed cross-sectional shape to the width direction, ie, an open cross-sectional shape.

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

In the above embodiment, a pair of the lower rail 2 and the upper rail 3 (vehicle seat slide device) may be disposed with respect to the seat 5, or may be disposed in three pairs.

Claims

Lower rail,
An upper rail coupled to the lower rail so as to be movable in the front-rear direction of the seat, a pair of side wall portions arranged side by side in the width direction, a lid wall portion connecting the upper ends of both side wall portions in the width direction; and An upper rail having a pair of support portions arranged side by side in the front-rear direction of the seat on each of the side wall portions;
A lock spring extending in the front-rear direction of the seat while being supported by the support portions of the both side wall portions in the upper rail, wherein the lower rail is positioned between the support portions in the front-rear direction of the seat A lock spring configured to engage with the lower rail and to urge the engagement portion to engage the lower rail, the engagement portion being configured to restrict the movement of the upper rail relative to the lower rail;
A release lever that has a latching groove recessed upward, and a tip of the lock spring is latched on the latching groove,
The release lever has a fulcrum located behind the latching groove and abutting the lid wall portion, and a pressing portion located behind the fulcrum, and the release lever is located within the upper rail. The release lever is engaged with the lower rail by pressing the lock spring with the pressing portion as the release lever rotates in one direction by the input of the release operation force. Is configured to release
The release lever is arranged such that the vertical position of the release lever includes the vertical position of the lock spring in the range between the latching groove and the fulcrum in the longitudinal direction of the seat. Vehicle seat slide device.
The vehicle seat slide device according to claim 1,
The release lever has 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 molded product with a loop handle configured to be operated by a user.
The vehicle seat slide device according to claim 2 or 3,
The vehicle seat slide device, wherein the pressing portion spreads in a plane so as to have inner wall surfaces that face each other in the vertical direction and are in close contact with each other.
The vehicle seat slide device according to any one of claims 2 to 4,
The second release lever further includes a second release lever, and the second release lever receives the second release operation force with respect to the second release lever, and the second press portion is moved to the fulcrum. It is configured to enter the upper rail from above the portion of the lid wall portion located rearward and press the release lever,
The said release lever is a vehicle seat slide apparatus which has a flat part facing the said 2nd press part.