WO2013035536A1

WO2013035536A1 - Seat slide device for vehicle

Info

Publication number: WO2013035536A1
Application number: PCT/JP2012/071200
Authority: WO
Inventors: 星原　直明; 新美　直樹; 耕二三宅; 晃洋千葉; 幹人名倉; 賢志増田; 恒雄仰木; 俊博木村
Original assignee: アイシン精機株式会社
Priority date: 2011-09-06
Filing date: 2012-08-22
Publication date: 2013-03-14
Also published as: BR112014003515A2

Abstract

A seat slide device for a vehicle is provided with: a first rail which is adapted to be affixed to one of a vehicle floor and a vehicle seat; and a second rail which is adapted to be affixed to the other of the vehicle floor and the vehicle seat and which is connected in a relatively movable manner to the first rail. An engagement member has a pair of shaft sections protruding therefrom, and the pair of shaft sections are respectively inserted into a pair of support holes respectively formed in both second side wall sections of the second rail. When caused to pivot about the shaft sections in a first direction, the engagement member restricts relative movement between the first and second rails, and when caused to pivot in a second direction, the engagement member releases the restriction on the relative movement. The engagement member is pressed in the height direction by a pressing member so as to restrict the relative movement. Each of the support holes has a holding section. The width of the opening of the holding section measured in the direction of the relative movement between the first and second rails is gradually reduced in the direction in which the engagement member is pressed by the pressing member, and the width of the opening on the front end side in the pressing direction is smaller than the diameter of the shaft sections.

Description

Seat slide device for vehicle

The present invention relates to a seat slide device for a vehicle.

Conventionally, as a seat slide device for vehicles, what was indicated, for example in patent documents 1 is known. The vehicle seat slide device includes a lower rail, an upper rail movably connected to the lower rail, and a locking member having spring elasticity disposed in a space formed between the lower rail and the upper rail. The locking member has a non-circular (square in a side view) fitting convex provided on both sides of the central connecting part and a non-circular fitting concave provided on both side walls of the upper rail The upper rail is non-rotatably connected to the upper rail based on the engagement due to the unevenness.

In such a configuration, when the operating lever is not operated, the locking member engages with the lower rail to restrict the movement of the upper rail with respect to the lower rail. Further, when operating the operation lever, the locking member linked to the operation lever releases the restriction of the movement of the upper rail with respect to the lower rail while being elastically deformed. At this time, a biasing force is generated in the locking member to return to the original state. Thus, with the release of the operating force of the operating lever, the locking member returns to the state in which the movement is restricted, and the operating lever returns to the non-operating state accordingly.

Patent Document 2 discloses another vehicle seat slide device. The vehicle seat slide device includes a lower rail, an upper rail movably connected to the lower rail, and a locking member disposed in a space formed between the lower rail and the upper rail. Then, the movement of the upper rail relative to the lower rail is restricted by lowering the engagement portion provided on the engagement member with the engagement portion provided on the lower rail by the urging force of the urging member. Alternatively, by lifting the locking portion so that the locking portion is released from the locked portion against the biasing force of the biasing member by the operating force of the control lever, the movement restriction of the upper rail with respect to the lower rail is released. .

Patent Document 3 discloses yet another vehicle seat slide device. The vehicle seat slide device includes a lower rail, an upper rail movably connected to the lower rail, and a locking member disposed in a space formed between the lower rail and the upper rail. Then, the engaging portion provided on the engaging member is inserted into the engaged portion provided on the lower rail by the biasing force of the torsion bar, whereby the movement of the upper rail relative to the lower rail is restricted. Alternatively, movement restriction of the upper rail with respect to the lower rail is released by removing the locking portion from the locked portion against the biasing force of the torsion bar by the operating force of the operating member. The torsion bar also has a function of holding the operating member via the locking member when the operating force of the operating member is released. That is, the torsion bar has a function of urging the locking member so as to restrict the movement of the upper rail with respect to the lower rail, and a function of holding the operation member, and by using the same portion of the torsion bar Two functions are played.

Unexamined-Japanese-Patent No. 2010-95171 Japanese Patent Application Publication No. 2003-252086 WO 2007/129435 pamphlet

The vehicle seat slide devices of Patent Documents 1 to 3 have room for improvement as follows.

In the vehicle seat slide device of Patent Document 1, the locking member is coupled to the upper rail based on the fitting of the non-circular concave and convex portions. Therefore, the gap between the recess and the protrusion in the front-rear direction and the height direction in the fitting portion is forced to rattle.

In the case where the locking member is disposed in the space formed between the lower rail and the upper rail as in the vehicle seat slide device of Patent Document 2, when the rail is enlarged to secure the disposition space of the locking member, the material It will be forced to increase the cost and the mass accompanying the increase in consumption. On the other hand, if the amount of movement at the time of lifting the locking member is reduced so that the locking portion is released from the locked portion in order to reduce the arrangement space required for the locking member, movement of the upper rail relative to the lower rail is restricted. The release may be insufficient and the operability may deteriorate.

In Patent Document 3, when the torsion bar breaks even at one place, both of the above-described functions are simultaneously affected. Therefore, it has also been proposed to make one spring independent on both sides of the joint position with the upper rail, and to assign the function of holding the operation member and the function of biasing the locking member to the front part and the rear part respectively. There is. However, no consideration has been given to the priority of the durability of these two independent functions.

An object of the present invention is to provide a vehicle seat slide device capable of suppressing rattling of a relative movement direction and a height direction of a locking member that regulates relative movement of both rails.

Another object of the present invention is to provide a vehicle seat slide device capable of further increasing the amount of movement of the locking member when releasing the movement restriction between the rails without increasing the size of the rails. .

Still another object of the present invention is more preferable to have the durability of one spring independently having the function of biasing the locking member so as to restrict relative movement of both rails and the function of holding the operation member. It is an object of the present invention to provide a vehicle seat slide device that can be set to

In order to achieve the above object, an aspect of the present invention is fixed to a first rail adapted to be fixed to one of a vehicle floor and a vehicle seat, and the other of the vehicle floor and the other of the vehicle seat A second rail which is adapted to be relatively movable with respect to the first rail, and is disposed in parallel in a width direction orthogonal to the longitudinal direction of the second rail and at a corresponding position in the width direction A second rail having a pair of side wall portions provided with support holes, and a locking member disposed in a space formed between the first rail and the second rail, the two support holes Each of the first rails is inserted and has a pair of shaft portions projecting respectively on both sides in the width direction, and engaged with the first rail with rotation in a first direction about the shaft portions, the first rail And the phase of the second rail A locking member for restricting movement and releasing engagement with the first rail with rotation in a second direction about the shaft portion to release restriction of the relative movement; and the relative movement And a biasing member for biasing the locking member in the height direction so as to regulate the first and second support holes, and each of the support holes is configured to move along the biasing direction of the locking member by the biasing member. The opening width in the relative movement direction of the rail and the second rail is formed to be gradually reduced, and each of the support holes has a holding portion located at an inner peripheral portion of the support hole, and the holding portion is formed A seat slide device for a vehicle, which defines the opening width which is smaller than the diameter of the shaft on the tip side in the biasing direction.

According to the same configuration, when the locking member is biased by the biasing member, the shaft tends to move in the biasing direction (height direction). At this time, the respective support holes have the opening width at the tip end side in the biasing direction being reduced by the holding portion relative to the diameter of the shaft portion, whereby the relative relationship between the first rail and the second rail At two points on both sides in the movement direction, each shaft can be inscribed in the corresponding support hole. Therefore, even if assembly variation occurs between the support holes and the shaft portion due to manufacturing variations of the second rail or the locking member, two points at which the support hole on one side and the shaft portion abut, The rattling of the locking member in the relative movement direction of the first rail and the second rail at at least one point (two points if the accuracy is high) at which the support hole on the opposite side and the shaft portion abut It can be prevented. Moreover, rattling of the locking member in the biasing direction (height direction) can be prevented by biasing the locking member (shaft portion) by the biasing member.

A second aspect of the present invention is adapted to be fixed to one of a vehicle floor and a vehicle seat, and is fixed to a first rail having a locked portion, the other of the vehicle floor and the other of the vehicle seat A second rail adapted to be relatively movable connected to the first rail, the pair of side wall portions juxtaposed in the width direction orthogonal to the longitudinal direction of the second rail, and the first rail A second rail having a connecting wall portion disposed on the rail so as to face in the vehicle height direction and connecting the base ends of the both side wall portions separated from the first rail; the first rail and the second rail A locking member disposed in a space formed between the locking member and rotatably connected about an axis extending in the width direction with respect to the second rail; and a tip portion of the locking member A locking portion, the first direction of the locking member With the rotation of the connector, while being separated from the connection wall, the locked portion engages with the locked portion to restrict the relative movement of the first rail and the second rail, and the rotation of the locking member in the second direction With the movement, the engagement with the engaged portion is released while approaching the connection wall portion to release the restriction on the relative movement of the first rail and the second rail, and the engagement portion has a flat plate shape. A locking portion having a tip end and having a notch on a surface facing the connecting wall portion on a rotation locus of the locking member at the tip end portion, and the locking portion is the locking portion A seat slide device for a vehicle, comprising: a biasing member biasing the locking member in a direction of engagement.

According to the same configuration, the biasing member rotates the locking member in a direction (first direction) in which the locking portion engages with the locked portion by the biasing force of the biasing member. The relative movement of the first rail and the second rail is restricted. On the other hand, the engagement is performed in a direction (second direction) in which the locking portion releases the engagement with the locked portion against the biasing force of the biasing member by an appropriate releasing operation force. By rotating the stop member, the restriction on the relative movement of the first rail and the second rail is released. At this time, since the locking portion approaches the connection wall portion, the movement amount of the locking member until the locking portion releases the engagement with the locked portion is the engagement amount. It is limited to the range until the stop contacts the connection wall. However, in the locking portion, the notch is formed at the tip end facing the connection wall portion on the rotation locus of the locking member, thereby increasing the amount of movement accordingly. Can. Thereby, the cancellation | release precision of control of relative movement of the said 1st rail and the said 2nd rail can be raised, and operativity can be improved. Moreover, since the shape change of the said 2nd rail is unnecessary, it is not necessary to enlarge a rail.

A third aspect of the present invention is a first rail fixed to one of a vehicle floor and a vehicle seat, fixed to the other of the vehicle floor and the other of the vehicle seat, and capable of relative movement with respect to the first rail A second rail to be connected, a locking member rotatably connected to the second rail, which selectively regulates relative movement of the first rail and the second rail, and linked to the locking member An operation member for transmitting an operation force for releasing the restriction on the relative movement, and the fixing member being fixed to the second rail by pivoting about a contact portion with a support wall portion provided on the second rail as a fulcrum A first biasing portion extending in one direction from the fixed position to bias the locking member in a direction that restricts the relative movement, and a control member extending in the other direction from the fixed position Second resiliently holding against the wall The load applied to the first biasing portion in the rotational position of the locking member until the locking member releases the restriction on the relative movement is provided with a single spring having a biasing portion. A seat slide device for a vehicle, which is set to be smaller than a load applied to the second urging portion at a rotational position of the operation member corresponding to a rotational position of the stop member.

According to the same configuration, the first rail and the second rail can be rotated by pivoting the locking member in a direction in which the relative movement of the first rail and the second rail is restricted by the biasing force of the first biasing portion. The relative movement of the second rail is restricted. On the other hand, in the direction in which the locking of the relative movement of the first rail and the second rail is released against the biasing force of the first biasing unit by the operating force of the operating member, the locking member The control of the relative movement of the first rail and the second rail is released by rotating the. The operation member is held so as to abut on the support wall portion by the biasing force of the second biasing portion. That is, the spring has a function of biasing the locking member so that relative movement of the first rail and the second rail is restricted, and the operation so that the operation member abuts on the support wall portion. It has an independent function of holding the member elastically.

FIG. 1 is a side view schematically showing a first embodiment of the present invention. It is a cross-sectional view which shows the embodiment, Comprising: It is sectional drawing along the II-II line of Fig.3 (a). (A) is a top view which shows the embodiment, (b) is a side view which shows the embodiment. The disassembled perspective view which shows the embodiment. The enlarged view which shows a support hole. (A) is sectional drawing along the VI-VI line of Fig.3 (a), (b) is sectional drawing which shows operation | movement of the embodiment. (A) is a perspective view which shows a locking member, (b) is a top view which shows a locking member, (c) is a longitudinal cross-sectional view of (b). The perspective view which shows a spring. (A) is a graph which shows the relationship between the displacement of a 2nd biasing part, load, and stress, (b) is a graph which shows the relationship between displacement of a 1st biasing part, load, and stress.

First Embodiment
A vehicle seat slide device according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, a lower rail 3 as a first rail is fixed to the vehicle floor 2 in a manner to extend in the front-rear direction of the vehicle. An upper rail 4 as a second rail is mounted on the lower rail 3 so as to be movable relative to the lower rail 3 in the front-rear direction.

Note that the pair of lower rails 3 and upper rails 4 shown in FIG. 1 is one of two pairs disposed at an interval in the width direction of the vehicle (direction orthogonal to the paper surface in FIG. 1). Shows the one placed on the left side towards the front. A seat 5 for seating an occupant is fixed and supported by both upper rails 4. The relative movement of the upper rail 4 with respect to the lower rail 3 is basically restricted, and a release handle 6 is provided for releasing the restricted state.

As shown in FIG. 2, each lower rail 3 is made of a plate material, and a pair of first side wall portions 11 erected on both sides in the width direction and base ends of these first side wall portions 11, that is, first ends It has a connecting wall 12. The first folded wall portion 13 extending inward in the width direction and further folded back toward the first connection wall portion 12 is continuous with the first side wall portion 11 at the tip end or upper end of each first side wall portion 11 Is formed.

The upper rail 4 is formed by joining a substantially step-shaped plate material P1 and a substantially flat plate material P2 at their upper end portions. The upper rail 4 is provided with a second side wall portion 14 as a pair of side wall portions extending in the vertical direction between both the first folded wall portions 13 of the lower rail 3 and a base end at a position farther from the lower rail 3 of the second side wall portions 14. That is, it has a second connecting wall 15 as a connecting wall connecting the upper ends. At the front end or lower end of each second side wall 14 closer to the lower rail 3, it extends outward in the width direction and is further folded back so as to be surrounded by the first side wall 11 and the first folded wall 13 A second folded wall portion 16 as a wall portion is formed to be continuous with the second side wall portion 14.

That is, the lower rail 3 and the upper rail 4 respectively have substantially U-shaped cross sections, and the openings thereof are butted to face each other, and the first and second folded

wall portions

13 and 16 are mainly Is prevented by the engagement of the The rail cross section formed by the lower rail 3 and the upper rail 4 is a box shape having a substantially rectangular shape. The lower rail 3 cooperates with the upper rail 4 to form an internal space S.

As shown in FIGS. 3 (a) and 3 (b), a pair of front and rear rolling members 20 is mounted between each second folded wall portion 16 and the first side wall portion 11 opposed thereto. There is. The upper rail 4 is slidably supported on the lower rail 3 in the longitudinal direction (longitudinal direction) in such a manner as to roll the rolling members 20 between the upper rail 4 and the lower rail 3.

At the base end, that is, the upper end, of both first folded wall portions 13 of the lower rail 3, lock holes 13 a as a plurality of rectangular locked portions juxtaposed in respective longitudinal directions are formed with a predetermined distance. . The lock holes 13a open upward.

Further, a plurality of (three) through

holes

14a, 14b and 14c arranged in parallel in the longitudinal direction are formed at the predetermined intervals in the longitudinal direction intermediate portions of both the second side wall portions 14 of the upper rail 4 There is. The through holes 14a to 14c are opened in the width direction, and are disposed at positions where they can coincide with a plurality of (three) lock holes 13a adjacent in the longitudinal direction of the lower rail 3.

A plurality of (three) fitting grooves 16a arranged in parallel along the longitudinal direction are formed at the front end, that is, the upper end, of both second folded wall portions 16 of the upper rail 4 at the predetermined intervals. The insertion grooves 16a are opened upward, and are disposed to face the through holes 14a to 14c in the width direction. The insertion grooves 16 a are disposed at positions where they can coincide with a plurality of (three) lock holes 13 a adjacent in the longitudinal direction of the lower rail 3.

In addition, as shown in FIG. 4, a pair of circular support holes 21 arranged to face each other in the width direction is provided in front of the through holes 14 a to 14 c of both second side wall portions 14 of the upper rail 4. It is arranged. The axes of the support holes 21 extend in the width direction. Further, one side of the upper rail 4, that is, the lower side of FIG. 3A, the front end portion of the second side wall portion 14 of the plate member P2 A substantially square frame shaped support wall 22 cut and raised in the width direction is formed. Furthermore, at the rear end portion of the second side wall portion 14 on one side (plate material P2 side) of the upper rail 4, a substantially square cut and raised in the width direction on the side of the second side wall portion 14 facing toward the interior space S A plate-like reinforcing portion 23 is formed. Each of the support wall portion 22 and the reinforcement portion 23 bridges between the two second side wall portions 14 in such a manner that the tip end of the cut-and-raised approaches or abuts on the opposite second side wall portion 14. 14 suppresses the deformation of the upper rails 4 approaching each other. Furthermore, in the second connection wall portion 15 of the upper rail 4, a pair of substantially square support holes 24 are formed in parallel in the front-rear direction between the support holes 21 and the support wall portions 22.

In the internal space S formed between the lower rail 3 and the upper rail 4, a locking member 30 made of a plate material is disposed in a manner to extend in the longitudinal direction of the vehicle. As shown in FIG. 4, the locking member 30 has a pair of vertical wall portions 31 erected upward at both widthwise end edges of the longitudinal direction intermediate portion. The distance in the width direction of the vertical wall portions 31 is set smaller than the distance in the width direction of the second side wall portions 14 of the upper rail 4. At the rear of the two vertical wall portions 31, a pair of shaft portions 32 supported by the support holes 21 project outward in the width direction. Each shaft 32 is substantially cylindrical with one end closed. The distance in the width direction between the tips of the two shaft portions 32 is set to be larger than the distance in the width direction of both the second side wall portions 14 of the upper rail 4. The locking member 30 is rotatably connected to the upper rail 4 around an axis extending in the width direction by inserting and supporting the shaft portions 32 in the support holes 21.

An input portion 33 extending forward with a width smaller than the distance in the width direction of both vertical wall portions 31 is formed forward of both vertical wall portions 31 of the locking member 30. The front end of the input portion 33 forms a substantially arc-shaped contact portion 33 a that is convex upward. On the rear side of both vertical wall portions 31 of the locking member 30, a flat locking portion 34 extending rearward is formed. The locking portion 34 has a substantially square main body portion 34a having a width smaller than the distance between the second side wall portions 14 of the upper rail 4 in the width direction, and is provided outside each rear end of the main body portion 34a in the width direction. A plurality of (three on each side, a total of six) locking

claws

34b, 34c, 34d are provided so as to project toward the end. The locking claws 34b to 34d on each side are juxtaposed along the longitudinal direction (front-rear direction) of the locking member 30 at the predetermined intervals. As shown in FIGS. 3 (a) and 3 (b), the locking member 30 connected to the upper rail 4 has the main portion 34a between the second side wall portions 14 and all the locking claws 34b to 34d. Is allowed to rotate around the shaft 32 in such a manner that the corresponding through holes 14a to 14c are inserted with play from the inside. The center of gravity of the locking member 30 is disposed rearward of the shaft portion 32.

As shown by the solid line in FIG. 2, when the locking member 30 pivots around the shaft portion 32 so that the locking portion 34 is lowered, the locking holes 13a and the fitting grooves 16a to which the locking claws 34b to 34d correspond. Can be inserted into the When the locking claws 34b to 34d are inserted into the corresponding lock holes 13a and the fitting grooves 16a, the locking claws 34b to 34d are between the through holes 14a to 14c into which the locking claws 34b to 34d are inserted and the fitting grooves 16a. The relative movement of the lower rail 3 and the upper rail 4 is appropriately restricted by being inserted into the lock hole 13a.

On the other hand, as shown by a two-dot chain line in FIG. 2, when the locking member 30 pivots around the shaft portion 32 so that the locking portion 34 is lifted, the lock holes 13 a corresponding to the locking claws 34 b to 34 d It is set to get out of it. At this time, the restriction on the relative movement of the lower rail 3 and the upper rail 4 is released.

In the internal space S formed between the lower rail 3 and the upper rail 4, as shown in FIGS. 3 (a) and 3 (b), a torsion spring 41 made of a single wire as a biasing member is disposed. There is. The torsion spring 41 is formed in a substantially U-shape which opens in the rear side in a plan view, and has a pair of extending portions 41a extending in the front-rear direction symmetrically in the left-right symmetry, and the both extending portions 41a It has the connection part 41b which connects front ends in the width direction. The torsion spring 41 is positioned in the internal space S in such a manner that a portion thereof protrudes from the pair of support holes 24 and is fastened to the second connection wall portion 15 and is rearward of the support hole 21 (shaft portion 32). As a result, the rear ends of the both extending portions 41 a are elastically brought into contact with the upper surface of the locking portion 34. That is, the torsion spring 41 is bent and deformed about a fixed position (the support hole 24 on the rear side) with the upper rail 4 as a fulcrum, and biases the locking member 30 in the circumferential direction centering on the fixed position. . Accordingly, the locking portion 34 of the locking member 30 is biased by the torsion spring 41 in the downward direction, that is, in the direction in which the locking claws 34b to 34d are fitted into the corresponding lock holes 13a and the fitting grooves 16a. ing. The connection portion 41b of the torsion spring 41 is disposed between the support wall portion 22 and the front support hole 24 in the front-rear direction.

The release handle 6 is formed by bending a cylindrical member, and is formed to bridge the upper rails 4 in the width direction at the front end portions of the upper rails 4. A distal end portion 61 extending rearward of the release handle 6 has a substantially square cylindrical shape which is smaller than the opening width of the support wall portion 22 and a slit extending in the width direction is formed on the bottom wall thereof. Support grooves 62 are formed. A pressing portion 63 is formed by squeezing the tip end, that is, the rear end, of the tip portion 61 in the vertical direction into a flat plate shape.

When the release handle 6 is inserted from the front side into the corresponding support wall 22 of each distal end portion 61, the connection portion 41b of the torsion spring 41 is engaged with the support groove 62, whereby the release handle 6 is locked and prevented. At this time, each tip end portion 61 is urged so as to ascend by the torsion spring 41 in the support groove 62, so that the upper surface of the tip end portion 61 is held in contact with the opposing inner wall surface of the support wall portion 22. Be done. At this time, the pressing portion 63 is disposed on the upper side of the input portion 33 of the locking member 30 with an interval. That is, the torsion spring 41 also has a function of elastically holding the release handle 6 at a predetermined initial position so that the release handle 6 maintains a certain linked state with the locking member 30.

Then, when the distal end portion 61 of the release handle 6 is pivoted in the clockwise direction in the figure with the point of contact with the support wall portion 22 (hereinafter, also referred to as “support point O1”) as a fulcrum, The member 30 is pivoted in the counterclockwise direction as the input portion 33 of the locking member 30 is lowered. Thereby, the locking portion 34 of the locking member 30 moves in the direction of rising against the biasing force of the torsion spring 41, that is, in the direction in which the locking claws 34b to 34d are disengaged from the corresponding lock holes 13a. The support wall portion 22 is used to set the fulcrum of rotation of the distal end portion 61 (the release handle 6) by using the lever principle to operate the release handle 6 required for releasing the locking member 30. It is to balance the force and the operation amount. It is needless to say that the rotation direction of the locking member 30 is reverse to the rotation direction of the release handle 6.

Here, the support hole 21 for supporting the shaft portion 32 of the locking member 30 will be described. As shown in FIG. 5, the inner wall surfaces on both sides of the support hole 21 in the front-rear direction (the relative movement direction of the lower rail 3 and the upper rail 4) have sloped holding portions 25 approaching each other as they go downward. Each holding portion 25 is provided at an inner circumferential portion of the opposing support hole 21. Accordingly, the opening width of the support hole 21 in the front-rear direction is gradually reduced by these holding portions 25 in the downward direction, that is, in the urging direction of the locking member 30 by the torsion spring 41. Both holding portions 25 define an opening width in the front-rear direction smaller than the diameter of the shaft portion 32 on the lower end side of the support hole 21, that is, on the tip side in the biasing direction by the torsion spring 41. Therefore, as shown by a two-dot chain line in FIG. 5, the shaft portions 32 inserted into the support holes 21 do not contact the lower inner wall surface of the shaft portion 32 by the both holding portions 25. It can be inscribed in the support hole 21 at two points. As a result, even if there is assembly variation among the support holes 21 and the shaft portion 32 due to manufacturing variations of the upper rail 4 or the locking member 30, the support hole 21 (holding portion 25) and the shaft portion 32 on one side The rattling of the locking member 30 in the front-rear direction is at two points in contact and at least one point (two points if the accuracy is high) at which the support hole 21 (holding part 25) and the shaft part 32 on the opposite side abut. Be suppressed.

The upper edge 26 and the lower edge 27 of the support hole 21 are formed in a substantially arc shape so that the angle formed with the holding portion 25 is an obtuse angle. This is to suppress residual stress generated at the boundary position between the holding portion 25 and the upper edge 26 or at the boundary position between the holding portion 25 and the lower edge 27 when the support hole 21 is drilled.

Next, the operation of this embodiment will be described.

First, it is assumed that the operating force of the release handle 6 is released. At this time, each tip 61 biased and held by the torsion spring 41 in the support groove 62 is positioned in such a manner that the upper surface thereof is in contact with the opposing surface of the support wall 22. The pressing portion 63 is disposed above the input portion 33 of the locking member 30 at an interval. Therefore, the locking member 30 released from the tip end portion 61 (the release handle 6) is inserted in the direction in which the locking portion 34 is lowered by the torsion spring 41, that is, the lock holes 13a corresponding to the locking claws 34b to 34d and It is biased in a direction to be inserted into the groove 16a. As a result, the relative movement of the lower rail 3 and the upper rail 4 is appropriately restricted by fitting the locking claws 34b to 34d into the corresponding lock holes 13a and the insertion grooves 16a. Then, the position of the seat 5 supported by the upper rail 4 in the front-rear direction is held.

Here, it is assumed that the release handle 6 is operated to lift its front end. At this time, each distal end portion 61 presses the input portion 33 of the locking member 30 by the pressing portion 63 by rotating in the direction of lowering the pressing portion 63 with the support point O1 as a fulcrum. Therefore, the locking member 30 resists the biasing force of the torsion spring 41 in the direction in which the locking portion 34 ascends around the shaft 32, ie, in the direction in which the locking claws 34b to 34d are disengaged from the corresponding lock holes 13a. Rotate. As a result, when the locking claws 34b to 34d are disengaged from the corresponding lock holes 13a, the restriction on the relative movement of the lower rail 3 and the upper rail 4 is released. Position adjustment of the sheet 5 supported by the upper rail 4 in the front-rear direction is possible.

As described above, according to this embodiment, the following effects can be obtained.

(1) When the locking member 30 is biased by the torsion spring 41, the shaft portion 32 tends to move in the biasing direction (height direction). At this time, each support hole 21 is formed such that the opening width at the front end side in the biasing direction, that is, the lower front and rear direction in the urging direction is reduced by the holding portion 25 than the diameter of the shaft portion 32. Therefore, the shaft portion 32 can be inscribed in the holding portion 25 at two points on both sides in the front-rear direction of each support hole 21. Therefore, even if assembly variation occurs between the support holes 21 and the shaft portions 32 due to manufacturing variations of the upper rails 4 or the locking members 30, two points at which the support holes 21 and the shaft portions 32 contact one side, A rattling of the locking member 30 in the front-rear direction can be prevented by at least one point (two points if the accuracy is high) at which the support hole 21 and the shaft portion 32 on the opposite side abut. Further, as the locking member 30 (shaft portion 32) is biased by the torsion spring 41, rattling of the locking member 30 in the biasing direction (height direction) can be prevented.

And since the rattling of the locking member 30 is prevented, the locking strength by the locking member 30 can be further stabilized.

(2) The locking member 30 is rotatably connected to the upper rail 4 by inserting both shaft portions 32 projecting to both sides in the width direction into the support holes 21. Therefore, when trying to connect the locking member 30 to the upper rail 4 as it is, it is necessary to set a play for absorbing the insertion allowance of the both shaft portions 32 into the both support holes 21 in the support hole 21. In that case, the strength reduction of the upper rail 4 is compelled by the increase of the opening amount of the support hole 21. However, as shown in FIG. 4, the corresponding shaft portion 32 is inserted into the support hole 21 of each of the plate members P1 and P2 (side wall portion 14) in a state of temporary assembly of the plate members P1 and P2 juxtaposed in the width direction. Then, the locking members 30 can be smoothly connected to the upper rail 4 by connecting the plate members P1 and P2 after that without increasing the opening amount of the support hole 21 intentionally. Further, in this case, since the assembly variation generated between the support holes 21 and the shaft portion 32 may become more remarkable by the increase in the number of parts, the aforementioned rattling restriction of the locking member 30 is more effective. It is

(3) To prevent rattling of the locking member 30 in the front and rear direction simply by changing the shape of the circular support hole 21 requiring setting of the gap (play) over the entire circumference of the shaft portion 32 Can.

(4) The upper wall 4 can be reinforced in a simple shape without increasing the number of parts and the number of manufacturing steps by the support wall portion 22 and the reinforcing portion 23 cut and raised in the upper rail 4 (second side wall portion 14). Therefore, for example, when the second folded wall portion 16 interferes with the first folded wall portion 13 of the lower rail 3 due to the moment of force based on the load at the time of a vehicle collision, both the second side wall portions 14 deform so as to approach each other This can be prevented by the support wall portion 22 and the reinforcing portion 23, and the upper rail 4 can be prevented from being separated from the lower rail 3.

(5) The locking portion 34 is lowered with the rotation of the locking member 30, thereby engaging with the lock hole 13a and restricting the relative movement of the lower rail 3 and the upper rail 4. Therefore, for example, even if the locking member 30 is not urged in the direction in which the locking portion 34 engages with the lock hole 13a due to a failure of the torsion spring 41, the locking portion 34 is lowered by its own weight, The restricted state of relative movement of the lower rail 3 and the upper rail 4 can be held.

The first embodiment may be modified as follows.

In the embodiment, the cross-sectional shape of the support hole 21 (the holding portion 25) is an example, and the opening width in the front and rear direction gradually decreases toward the downward direction, in the urging direction of the locking member 30 by the torsion spring 41. It should be done. For example, the major axis and the minor axis may be an ellipse, a partial ellipse, or an oval extending in the height direction and the longitudinal direction, respectively, or a trapezoid in which the long side and the short side are respectively disposed on the upper side and the lower side May be

In the first embodiment, the shaft 32 may be a support pin separate from the locking member 30.

In the first embodiment, the upper rail 4 may be formed of, for example, a single roll plate material. Moreover, the cross-sectional shape of the upper rail 4 is an example, and it only needs to have a pair of side wall portions (second side wall portions 14).

In the first embodiment, the fixed relationship (that is, the upper and lower arrangement relationship) of the lower rail 3 and the upper rail 4 with the vehicle floor 2 and the seat 5 may be reversed. In this case, the opening width in the front-rear direction of each support hole 21 is reduced by the holding portion 25 on the upper side than the diameter of the shaft 32, but the shaft 32 is locked by the torsion spring 41. By being biased upward, the support hole 21 (holding portion 25) can still be inscribed at two points on both sides in the front-rear direction. Further, the release operation of the locking member 30 installed on the vehicle floor 2 side may be performed from an appropriate operating member through, for example, a cable or the like.

In the first embodiment, the torsion spring 41 may be replaced by an urging member made of a plate spring.

In the first embodiment, the biasing member that biases the locking member 30 and the member that holds the release handle 6 (tip portion 61) may be separately provided.

Second Embodiment
Next, a vehicle seat slide device according to a second embodiment of the present invention will be described with reference to FIGS. 6 (a) to 7 (c). In the following description, the same members as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

At the rear of the support wall 22 of the second connection wall 15 of the upper rail 4, as shown in FIGS. 6 (a) and 6 (b), the claw cut and raised downward into the interior space S A stopper portion 28 in the form of a loop is formed. Furthermore, in the second connection wall portion 15 of the upper rail 4, a pair of substantially square support holes 24 juxtaposed in the front-rear direction is formed in front of the support holes 21 and behind the stopper portions 28. There is.

As shown in FIGS. 7 (a) to 7 (c), the front ends of both vertical wall portions 31 are relatively projected outward in the width direction in a manner to reduce the distance in the width direction on the rear side thereof. The front side regulation portion 36 is disposed. In the main body portion 34a, a rear side restricting portion 37 that protrudes outward in the width direction in front of the locking claw 34d is disposed. The two front side restricting portions 36 and the two rear side restricting portions 37 cooperate with each other by partially reducing the gaps between the opposing surfaces facing in the width direction of the second side wall portions 14, respectively. It suppresses the displacement of the

A notch 35 is formed at the upper end of the rear end of the main body portion 34a which is on the inner side in the width direction of both the locking claws 34b. The notch 35 forms an inclined surface such that the main body portion 34 a becomes thinner gradually toward the rear. As shown in FIGS. 6A and 6B, with the rotation of the locking member 30 in the direction in which the locking portion 34 is lifted, the locking portion 34 is on the opposite surface of the second connection wall 15. When in contact, the inclination angle is set such that the notch 35 is in surface contact with the opposite surface. This means that the movement amount of the locking member 30 (hereinafter also referred to as "lock release stroke") until the locking portion 34 (locking claws 34b to 34d) releases the engagement with the lock hole 13a is at most The range in which the locking portion 34 abuts on the opposite surface of the second connection wall portion 15 is limited. By forming the notch 35 in the rear end portion of the locking portion 34 opposed to the second connection wall portion 15 on the rotation locus of the locking member 30, the unlocking stroke is increased by the amount of the notch 35. It is for.

The connection portion 41 b of the torsion spring 41 is disposed between the support wall portion 22 and the stopper portion 28 in the front-rear direction.

In the holding state of the release handle 6 (tip portion 61) in the direction toward the upper rail 4, the stopper portion 28 is disposed so as to block the backward movement trajectory of the pressing portion 63. This is to prevent excessive insertion of the distal end portions 61 into the support wall portion 22 in the assembling process of the release handle 6 by the locking by the stopper portions 28.

As described above, according to the second embodiment, the following effects can be obtained.

(1) The lower rail 3 and the upper rail 4 are rotated by rotating the locking member 30 in a direction in which the locking portion 34 is engaged with the lock hole 13a while being separated from the second connection wall 15 by the biasing force of the torsion spring 41. Relative movement is regulated. On the other hand, by the operating force of the release handle 6, the engaging portion 34 is engaged in the direction to release the engagement with the lock hole 13a while approaching the second connection wall portion 15 against the urging force of the torsion spring 41. By rotating the stopping member 30, the restriction on the relative movement of the lower rail 3 and the upper rail 4 is released. At this time, since the locking portion 34 approaches the second connection wall portion 15, the unlocking stroke is limited to a range until the locking portion 34 abuts on the second connection wall portion 15. However, the notch 35 is provided in the locking portion 34 because the notch 35 is formed on the rear end portion facing the second connection wall portion 15 on the rotation locus of the locking member 30. Therefore, the unlocking stroke can be increased. Thereby, the cancellation | release precision of control of relative movement of the lower rail 3 and the upper rail 4 can be raised, and operativity can be improved. In addition, since there is no need to change the shape of the upper rail 4 or the like, there is no need to enlarge the rail cross section.

(2) The relative movement of the lower rail 3 and the upper rail 4 is locked by engaging the locking claws 34b to 34d inserted into the through holes 14a to 14c into the lock holes 13a and the fitting grooves 16a. At this time, for example, when a load is applied to move the lower rail 3 and the upper rail 4 relative to each other, the locking claws 34b to 34d receive the through holes 14a to 14c and the insertion grooves 16a on one side of the lower rail 3 and the upper rail 4 in the relative movement direction. A shear stress is generated by receiving a load from the inner wall surface of the lock hole 13a and the inner wall surface of the lock hole 13a on the other side in the relative movement direction. In other words, the locking strength of the relative movement of the lower rail 3 and the upper rail 4 is dominated by the shear strength of the locking claws 34b to 34d, and the influence of the main portion 34a is small. Therefore, the notch 35 is formed in the main body portion 34 a, so that it is possible to prevent the locking strength of the relative movement of the lower rail 3 and the upper rail 4 from being reduced by the notch 35.

(3) When the locking portion 34 abuts on the second connection wall portion 15 with the rotation of the locking member 30, the contact surface is in contact with the second connection wall portion 15 at the notch 35, so the contact surface The load can be distributed to Therefore, it is possible to reduce the possibility that the locking portion 34 is deformed as in the case where the load is concentrated on the tip of the locking portion 34 that abuts on the second connection wall 15, for example.

(4) When the front end portion 61 of the release handle 6 is excessively inserted into the support wall portion 22 of the upper rail 4, the rear end of the pressing portion 63 abuts on the stopper portion 28 to be locked. Therefore, such excessive insertion of the distal end portion 61 of the release handle 6 can be prevented. Moreover, since the stopper part 28 is formed by the simple method of only cutting and raising the 2nd connection wall part 15 of the upper rail 4, the increase in a number of parts and a manufacturing man-hour can be suppressed.

(5) Since the notch 35 is formed only at the rear end of the locking portion 34 (the main body portion 34a), it is possible to prevent the strength from becoming thin due to excessive thickness reduction.

(6) By adopting the closed closed lock hole 13a around the periphery, for example, it is excessive from the locking claws 34b to 34d as compared with the open groove shaped (or notch) locked part of the surrounding part. Deformation when a load is applied can be suppressed, and locking strength of relative movement of the lower rail 3 and the upper rail 4 can be increased.

The second embodiment may be modified as follows.

In the second embodiment, as long as the notch 35 does not affect the locking strength of the relative movement of the lower rail 3 and the upper rail 4, setting of the formation range and the inclination angle is arbitrary. Further, the corner portion of the rear end upper portion of the locking portion 34 may be a notch cut out in a step shape.

In the second embodiment, the number of locking claws juxtaposed in the front-rear direction of the locking portion 34 is arbitrary, and setting of locking strength of relative movement of the lower rail 3 and the upper rail 4 and necessary unlocking stroke An appropriate number may be adopted in accordance with.

In the second embodiment, the fixed relationship (that is, the upper and lower arrangement relationship) of the lower rail 3 and the upper rail 4 with the vehicle floor 2 and the seat 5 may be reversed.

In the second embodiment, the torsion spring 41 may be replaced by a biasing member made of a plate spring.

In the second embodiment, the biasing member for biasing the locking member 30 and the member for holding the release handle 6 (tip portion 61) may be separately provided.

Third Embodiment
Next, referring to FIGS. 3 (a), 3 (b), 8, 8, 9 (a) and 9 (b), a vehicle seat slide apparatus according to a third embodiment of the present invention explain. In the following description, the same members as those in the first and second embodiments are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 8, the spring 41 (first biasing portion 45) has a front fixing portion 42 formed by protruding the middle in the longitudinal direction of each extending portion 41 a upward, and the spring 41 (first urging portion 45) It has the rear side fixed part 43 which bulges each extending arrangement part 41a upwards at the back. The spring 41 forms a fastening portion 44 at a portion sandwiched between the front fixing portion 42 and the rear fixing portion 43 of the both extending portions 41 a. In addition, the spring 41 forms the first biasing portion 45 at a portion rearward of the rear fixed portion 43 of the both extending portions 41a, and also provides the first biasing portion 45 more than the front fixing portion 42 of the connecting portion 41b and the both extending portions 41a. The second biasing portion 46 is formed at the front portion.

As shown in FIGS. 3 (a) and 3 (b), the spring 41 projects into the internal space S in such a manner that the front side fixing portion 42 and the rear side fixing portion 43 protrude from the pair of support holes 24 respectively. It is positioned and is fastened to the second connection wall 15 by the caulking pin 47 at the fastening portion 44, and the first biasing portion 45 is resilient to the upper surface of the locking portion 34 at the rear of the support hole 21 (shaft 32). Contact. That is, the first biasing portion 45 is bent and deformed about a fixed position (rear fixing portion 43) with the upper rail 4 as a fulcrum, and biases the locking member 30 in the circumferential direction centering on the fixed position. ing. Therefore, the locking portion 34 of the locking member 30 is fitted in the lowering direction thereof by the spring 41 (first biasing portion 45), that is, the locking claws 34b to 34d correspond to the corresponding lock holes 13a and the fitting grooves 16a. It is biased towards the direction.

When the release handle 6 is inserted from the front side into the corresponding support wall 22 of each distal end portion 61, the connection portion 41b of the spring 41 is engaged with the support groove 62, whereby the release handle 6 is locked and removed. At this time, each tip end portion 61 is urged by the second urging portion 46 in the support groove 62 so that the upper surface of the tip end portion 61 abuts against the opposing inner wall surface of the support wall portion 22. It is held in a manner. That is, the second biasing portion 46 is bent and deformed about a fixed position (the front fixed portion 42) with the upper rail 4 as a fulcrum, and the tip portion 61 (release handle 6) is circumferentially centered on the fixed position. I am energized.

Here, when the locking member 30 is moved in the direction in which the locking claws 34 b to 34 d are disengaged from the corresponding lock holes 13 a, the rear end of the spring 41 (first biasing portion 45) follows the locking member 30. Move in the rising direction. At this time, the front end of the spring 41 (the second biasing portion 46) moves in the direction to descend following the release handle 6 linked to the locking member 30. In the following, the displacements DL and DH in the height direction of the tips of the first and

second biasing portions

45 and 46 of the spring 41 at this time, and the loads of the first and

second biasing portions

45 and 46 respectively corresponding LL, LH and stress SL, SH will be described based on FIGS. 9 (a) and 9 (b). 9 (a) and 9 (b), graduations D1 and D2 are given to displacements DL and DH in the height direction common to the first and

second biasing portions

45 and 46 on the horizontal axis. . On the other hand, the vertical axes of the first and

second biasing portions

45, 46 have the same interval on the vertical axis, and the load LL, LH and stress common to the first and second biasing portions 45, 46 A scale L1 and a scale S1 are attached to SL and SH, respectively.

As is clear from FIGS. 9A and 9B, the amount of change of the load LL with respect to the displacement DL of the first biasing unit 45, that is, the gradient of the graph corresponds to the load with respect to the displacement DH of the second biasing unit 46. It is set smaller than the amount of change in LH. That is, the elastic coefficient KL associated with the bending deformation of the first biasing portion 45 is set smaller than the elastic coefficient KH associated with the bending deformation of the second biasing portion 46. This is mainly because the extension length of the first biasing portion 45 from the rear side fixing portion 43, that is, the distance from the fixing position of the position where the first biasing portion 45 biases the locking member 30 with the upper rail 4 Is set to be longer than the distance from the fixing position of the upper rail 4 with the extension length of the second biasing portion 46 from the front side fixing portion 42, ie, the position where the second biasing portion 46 biases the release handle 6 Is realized. The amount of change in the stress SL relative to the displacement DL of the first urging portion 45, that is, the gradient of the graph, is also set smaller than the amount of change in the stress SH relative to the displacement DH of the second urging portion 46.

The minimum value LLm and the maximum value LLM of the load LL in the use range ZL of the first biasing unit 45 related to the biasing of the locking member 30 are the use range ZH of the second biasing unit 46 related to the holding of the release handle 6 Is set smaller than the minimum value LHm and the maximum value LHM of the load LH. The load LL applied to the first biasing portion 45 at the rotational position of the locking member 30 until the locking member 30 releases the restriction on the relative movement is a release corresponding to the rotational position of the locking member 30 It is set smaller than the load LH applied to the second urging portion 46 at the rotational position of the handle 6.

Similarly, the minimum value SLm and the maximum value SLM of the stress SL in the use range ZL are set smaller than the minimum value SHm and the maximum value SHM of the stress SH in the use range ZH. The stress SL generated in the first biasing portion 45 at the rotational position of the locking member 30 until the locking member 30 releases the restriction on the relative movement corresponds to the rotational position of the locking member 30. The rotational position of the release handle 6 is set to be smaller than the stress SH generated in the second urging portion 46.

As described above, according to the third embodiment, the following effects can be obtained.

(1) The spring 41 has a function of urging the locking member 30 so that the movement of the upper rail 4 with respect to the lower rail 3 is restricted, and release so that the release handle 6 (tip portion 61) abuts on the support wall 22 It has an independent function to hold the handle 6 elastically. In particular, the load LL applied to the first biasing portion 45 at the rotational position of the locking member 30 until the locking member 30 releases the restriction of the movement corresponds to the rotational position of the locking member 30. The load LH applied to the second biasing portion 46 at the rotational position of the release handle 6 is always set smaller. The stress SL generated in the first biasing portion 45 is also smaller than the stress SH generated in the second biasing portion 46. For this reason, deterioration and damage of the first biasing portion 45 can be suppressed relatively more than the second biasing portion 46. Then, even if the spring 41 is deteriorated, it usually starts from the second urging unit 46, and the user is recognized by the fact that the holding function of the release handle 6 by the second urging unit 46 is impaired. . Therefore, it is possible to make the user or the like recognize the deterioration of the spring 41 before the biasing function of the locking member 30 in the direction of restricting the movement by the first biasing unit 45 is impaired, and the biasing function Can be reduced.

(2) The second urging portion 46 is the release handle 6 (tip portion 61) at a distance from the fixed position (rear fixing portion 43) at which the first urging portion 45 urges the locking member 30. By using a very simple method of setting the biasing position to be longer than the distance from the fixed position (the front fixed portion 42), the load LL applied to the first biasing portion 45 can be applied to the second biasing portion 46. It can be smaller than the applied load LH. Even if the arrangement space in the front-rear direction of the spring 41 is limited within a certain range, the first biasing portion 45 can be adjusted by adjusting and setting the length distribution of the first and

second biasing portions

45, 46. Can be smaller than the load LH applied to the second biasing portion 46. The stress SL generated in the first biasing portion 45 can be smaller than the stress SH generated in the second biasing portion 46.

(3) The number of parts can be reduced, for example, by providing one spring 41 with the above-described two functions, as compared to the case where these functions are provided to individual springs, for example.

(4) In the present embodiment, the load LL applied to the first biasing portion 45 is buffered by the rear side fixing portion 43, and the load LH applied to the second biasing portion 46 is buffered by the front fixing portion 42. The independence of the two functions can be kept more reliably.

The third embodiment may be modified as follows.

In the third embodiment, the load LL applied to the first biasing portion 45 at the rotational position of the locking member 30 until the locking member 30 releases the restriction of the movement is the locking member 30. If it is set smaller than the load LH applied to the second biasing portion 46 at the pivoting position of the release handle 6 corresponding to the pivoting position of the first and

second biasing portions

45 and 46 in an appropriate manner. The relationship between the spring torques may be adjusted and set. For example, the setting described above may be realized by equalizing the elastic coefficient KL of the first urging unit 45 and the elastic coefficient KH of the second urging unit 46 and adjusting only the respective use ranges ZL and ZH. .

In the third embodiment, a spring formed of a leaf spring may be employed. Even in this case, the first urging portion and the second urging portion may be disposed on the rear side and the front side of the position fixed to the upper rail 4.

In the third embodiment, the spring having the first and second biasing portions that generate biasing force by tensile deformation, compressive deformation, torsional deformation or the like corresponding to the support structure or the like of the locking member or the release handle It may be adopted.

In the third embodiment, the locking member may be rotatably coupled to the upper rail 4 outside the internal space S. In this case, the axis of the locking member may extend, for example, in the front-rear direction (longitudinal direction of the upper rail 4). Similarly, it may be a release handle supported by the upper rail 4 outside the internal space S.

In the third embodiment, the fixed relationship (i.e., the upper and lower disposition relationship) of the lower rail 3 and the upper rail 4 with the vehicle floor 2 and the seat 5 may be reversed.

Claims

A first rail adapted to be fixed to one of the vehicle floor and the vehicle seat;
A second rail adapted to be fixed to the other of the vehicle floor and the other of the vehicle seat and movably coupled relative to the first rail, the width direction orthogonal to the longitudinal direction of the second rail A second rail having a pair of side wall portions provided in parallel with each other and provided with supporting holes at corresponding positions in the width direction,
A locking member disposed in a space formed between the first rail and the second rail, the locking member having a pair of shaft portions which are respectively inserted into the two support holes and which protrude to both sides in the width direction. And, upon rotation in the first direction about the shaft portion, the first rail engages with the first rail to restrict relative movement of the first rail and the second rail, and the shaft portion is centered A locking member for releasing the restriction on the relative movement by releasing the engagement with the first rail along with the rotation in the second direction;
And a biasing member for biasing the locking member in the height direction so as to regulate the relative movement.
Each of the support holes is formed such that the opening width in the relative movement direction of the first rail and the second rail gradually decreases in the urging direction of the locking member by the urging member. Each support hole has a holding portion located at an inner peripheral portion of the support hole, and the holding portion defines the opening width which is smaller than the diameter of the shaft at the tip end side in the biasing direction. Seat slide device for vehicles.
In the vehicle seat slide device according to claim 1,
The said 2nd rail is a seat slide apparatus for vehicles by which the board | plate material of 2 sheets parallelly arranged in the said width direction was couple | bonded.
A first rail adapted to be fixed to one of the vehicle floor and the vehicle seat and having a locked portion;
A second rail adapted to be fixed to the other of the vehicle floor and the other of the vehicle seat and movably coupled relative to the first rail, the width direction orthogonal to the longitudinal direction of the second rail A pair of side wall portions juxtaposed to each other, and a connecting wall portion disposed opposite to the first rail in the height direction of the vehicle and connecting the base ends of the both side wall portions separated from the first rail With the second rail,
A locking member disposed in a space formed between the first rail and the second rail and rotatably connected about an axis extending in the width direction with respect to the second rail;
A locking portion formed at a tip end portion of the locking member, wherein the locking portion is engaged with the locked portion while being separated from the connection wall as the locking member is rotated in a first direction; The relative movement of the first rail and the second rail is restricted, and the engagement with the engaged portion is released while approaching the connection wall as the locking member is pivoted in the second direction. Restricting the relative movement of the first rail and the second rail, and the locking portion has a flat plate shape and has a tip portion, and the pivoting locus of the locking member at the tip portion A locking portion having a notch in a surface opposite to the connection wall;
And a biasing member for biasing the locking member in a direction in which the locking portion engages with the locked portion.
In the vehicle seat slide device according to claim 1 or 2,
The second rail is disposed to face the first rail in the height direction of the vehicle, and has a connecting wall portion connecting the base ends of the both side wall portions separated from the first rail.
A locking portion formed at a tip end portion of the locking member, the engagement portion being provided on the first rail while being separated from the connection wall as the locking member is rotated in the first direction The locking portion engages with the locking portion to restrict relative movement of the first rail and the second rail, and the locking portion approaches the connection wall portion as the locking member rotates in the second direction. To release the restriction on the relative movement of the first rail and the second rail, and the locking portion has a flat plate shape and has a tip and the locking member at the tip. A locking portion having a notch on a surface opposite to the connection wall portion on a rotation locus of
The vehicle seat slide device, wherein the biasing member biases the locking member in a direction in which the locking portion engages the locked portion.
In the vehicle seat slide device according to claim 3 or 4,
The second rail has a tip at a position closer to the first rail in the side wall portion, and has a base end at a position farther from the first rail, and the second rail is the side wall A pair of folded wall portions extending outward in the width direction from the tip of the portion and folded back toward the proximal end of the side wall portion,
The first rail is
A pair of first side walls juxtaposed in the width direction;
A first connection wall portion which is disposed to face the second rail in the vehicle height direction and which connects the base ends of the first side wall portions separated from the second rail;
It extends inward in the width direction from the tip of the first side wall portion closer to the second rail and folds back toward the first connection wall portion of the first side wall portion, and the side wall portion and the folded back of the second rail And a pair of first folded wall portions surrounded by the wall portion;
The locked portion is disposed at a proximal end of the first folded wall portion,
A through hole formed in the side wall portion of the second rail;
And an insertion groove formed at an end of the folded wall portion of the second rail,
The locking portion is
A main body disposed between the side walls of the second rail;
It has a locking claw that protrudes outward in the width direction of the main body portion and is inserted into the through hole and can be fitted into the locked portion and the fitting groove;
The vehicle seat slide device, wherein the notch is formed in the main body portion.
The vehicle seat slide apparatus according to any one of claims 3 to 5,
The notch is formed to be in surface contact with the connecting wall when the engaging portion abuts on the connecting wall as the locking member rotates in the second direction. Seat slide device for vehicles.
The seat slide apparatus for a vehicle according to any one of claims 3 to 6,
The locking portion is lowered with the rotation of the locking member in the first direction to engage with the locked portion, thereby engaging the relative movement of the first rail and the second rail. Stop the vehicle seat slide device.
A first rail fixed to one of the vehicle floor and the vehicle seat;
A second rail fixed to the other of the vehicle floor and the other of the vehicle seat, and relatively movably connected to the first rail;
A locking member rotatably connected to the second rail for selectively restricting relative movement of the first rail and the second rail;
An operating member that is linked to the locking member and transmits an operating force for releasing the restriction on the relative movement by pivoting about a contact portion with a support wall portion provided on the second rail as a fulcrum;
A first biasing portion fixed to the second rail and extending in one direction from the fixed position to bias the locking member in a direction to restrict the relative movement, and extending in the other direction from the fixed position A single spring having a second biasing portion which elastically holds the operating member so as to abut on the support wall;
The load applied to the first biasing portion in the rotational position of the locking member until the locking member releases the restriction on the relative movement is the operation corresponding to the rotational position of the locking member The seat slide apparatus for vehicles set smaller than the load added to the said 2nd urging | biasing part in the rotational position of a member.
The seat slide device for a vehicle according to any one of claims 1 to 7,
An operating member that is linked to the locking member and transmits an operating force for releasing the restriction on the relative movement by pivoting about a contact portion with a support wall portion provided on the second rail as a fulcrum;
A first biasing portion fixed to the second rail and extending in one direction from the fixed position to bias the locking member in a direction to restrict the relative movement, and extending in the other direction from the fixed position A single spring having a second biasing portion which elastically holds the operating member so as to abut on the support wall;
The load applied to the first biasing portion in the rotational position of the locking member until the locking member releases the restriction on the relative movement is the operation corresponding to the rotational position of the locking member The seat slide apparatus for vehicles set smaller than the load added to the said 2nd urging | biasing part in the rotational position of a member.
The vehicle seat slide device according to claim 8 or 9,
The first biasing portion and the second biasing portion respectively bias the locking member and the operation member in a circumferential direction centering on the fixed position,
The distance from the fixed position at which the first biasing portion biases the locking member is longer than the distance from the fixed position at which the second biasing portion biases the operation member. Seat slide device for vehicles that is set.