WO2015060435A1

WO2015060435A1 - Seat slide device

Info

Publication number: WO2015060435A1
Application number: PCT/JP2014/078373
Authority: WO
Inventors: 貴紀佐藤; 考司熊谷; 酒井　誠; 小島　康敬
Original assignee: アイシン精機株式会社
Priority date: 2013-10-25
Filing date: 2014-10-24
Publication date: 2015-04-30
Also published as: BR112016008128A2; BR112016008128B1

Abstract

When a lock member (20) is assembled onto an upper rail (40), a second rotating shaft portion (26L) is inserted into a shaft accommodating hole (47) of a first side wall portion (44a) from inside the upper rail (40). After insertion, the lock member (20) is rotated such that the second rotating shaft portion (26L) is inserted into the shaft accommodating hole (47) of a second side wall portion (44b). At this time, because a shaft-side allowable length (L2) is set to be greater than a shaft-side maximum rotation length (L4), interference to the insertion of the rotating shaft portion (26) by the second rotating shaft portion (26L) contacting an edge portion of the shaft accommodating hole (47) at the second side wall portion (44b) is suppressed.

Description

Seat slide device

This invention relates to a seat slide device.

2. Description of the Related Art Conventionally, a vehicle seat slide device configured to be able to adjust a vehicle seat position in the front-rear direction of the vehicle is known.
The vehicle seat slide device described in Patent Document 1 includes a lower rail, an upper rail that is movably mounted on the lower rail, and a locking member that is disposed in a space formed between the lower rail and the upper rail. Prepare.

Specifically, as shown in FIG. 16, the locking member 120 has a plurality of locking claws 124 protruding in the width direction W at the tip thereof. Locking claw holes 149 are formed on two surfaces of the upper rail 130 facing the width direction W. When the locking member 120 is installed in the upper rail 130, each locking claw 124 protrudes from the upper rail 130 in the width direction W through the locking claw hole 149. Therefore, the tip of each latching claw 124 is exposed to the outside of the upper rail 130, and the tip of each latching claw 124 can be fitted to the lower rail (not shown). The locking member 120 has a substantially columnar rotating shaft 128.

In the seat slide device described in Patent Document 1, one upper rail is configured to be separable. Specifically, as shown in FIG. 16, the upper rail 130 is composed of a first member 130a and a second member 130b. In order to assemble the locking member 120 to the upper rail 130, first, in a state where the first member 130a and the second member 130b are separated in the width direction W, between the first member 130a and the second member 130b. A locking member 120 is installed. Then, the locking claws 124 are inserted into the locking claw holes 149 of the upper rail 130 by bringing the first member 130a and the second member 130b closer to each other. The rotating shaft 128 of the locking member 120 is also inserted into the shaft through hole 131 formed in both the

members

130a and 130b. And the 1st and

2nd members

130a and 130b are mutually fastened by fasteners, such as a volt | bolt and a nut which are not shown in figure.

As described above, since the upper rail 130 is configured to be divided in the width direction W, the locking member 120 is assembled to the upper rail 130 regardless of the length of the locking claw 124 and the rotary shaft 128 in the width direction W. Is possible.

Further, the locking member 120 is supported so as to be rotatable in the upper rail 130. Depending on the rotation position of the locking member 120, the locking claw 124 is fitted into the lock hole (not shown) of the lower rail or escapes from the lock hole of the lower rail. Thus, the vehicle seat slide device can prohibit or permit the upper rail 130 fixed to the seat to move relative to the lower rail fixed to the vehicle floor.

Further, for example, Patent Document 2 discloses a configuration in which one support pin is inserted through the side wall of the upper rail and the locking member in order to support the locking member in the upper rail.
Further, for example, Patent Document 3 has a configuration in which the operation lever is rotatably supported through a support pin, and the engaging member is supported on the upper rail so as not to be simply rotatable by a fitting convex portion formed on the engaging member. It is disclosed.

JP 2013-52843 A JP 2008-184033 A JP 2010-95171 A

In the configuration of Patent Document 1 disclosed in FIG. 16 above, when the upper rail 130 is assembled, the locking member 120 is installed between the first and

second members

130a and 130b, and the

members

130a and 130b are attached to each other. Assembled. In this case, since the upper rail 130 needs to be configured to be separable, the number of parts of the seat slide device increases.

Further, in the seat slide devices disclosed in Patent Document 1 and Patent Document 2, the configuration in which the locking member is rotatably supported by the upper rail is complicated. Therefore, an object of the present invention is to provide a seat slide device having a simpler configuration.

Further, in the seat slide devices disclosed in Patent Document 1 and Patent Document 3, when an impact is applied to the locking member, the locking claw receives a reaction force from the lock hole of the lower rail. Due to this reaction force, a rotational force about the rotation shaft portion is applied to the locking member. As a result, the locking claw may come off from the lock hole of the lower rail, and the upper rail may be able to move relative to the lower rail. Therefore, an object of the present invention is to provide a seat slide device that suppresses an inadvertent movement of the upper rail relative to the lower rail.

A seat slide device that solves the above problems includes a first rail, a second rail that is connected to the first rail along the longitudinal direction of the first rail so as to be relatively movable, and the second slide that rotates within the second rail. A locking member that is supported so that the second rail includes first and second side wall portions facing in a width direction orthogonal to a longitudinal direction of the second rail, and The second side wall is formed with a first receiving hole and a second receiving hole into which a part of the locking member is inserted, respectively, and the locking member extends in the longitudinal direction of the main body and the main body. Extending from the first and second side surfaces extending from the first and second side surfaces to the outside of the second rail through the first receiving holes, respectively, and depending on the rotational position of the locking member The locking position locked to the first rail is separated from the first rail. A locking claw that moves between the release position and the first side surface of the main body, and is rotatable in the second accommodation hole of the first side wall of the second rail. The first rotation shaft portion to be inserted and the second side surface of the main body portion are formed, and the first rotation shaft portion is rotatably inserted into the second accommodation hole of the second side wall portion of the second rail. A second rotating shaft portion, and a first end portion in the height direction perpendicular to the longitudinal direction and the width direction of the main body portion in the second receiving hole of the first side wall portion, and the second rotating shaft portion. A shaft allowable length is defined by a length of a virtual straight line connecting the second end opposite to the first end in the height direction in the second accommodation hole of the side wall, Length of an imaginary straight line connecting the second side surface of the first portion and the tip of the first rotating shaft portion formed on the first side surface By the provisions for axis maximum rotation length, a permissible length for the shaft greater than a maximum rotation length for the shaft.

When the locking member is assembled to the second rail, the first rotating shaft portion is inserted into the shaft receiving hole of the first side wall portion from the inside of the second rail. After the insertion, the locking member is rotated so that the second rotating shaft portion is inserted into the shaft receiving hole of the second side wall portion. At this time, the shaft allowable length is set to be larger than the shaft maximum rotation length, so that the second rotating shaft portion comes into contact with the edge portion of the shaft receiving hole in the second side wall portion, thereby rotating the rotating shaft portion. Is prevented from being inserted into the shaft receiving hole. Therefore, the second rotating shaft portion can be inserted into the shaft accommodating hole in the second side wall portion. For this reason, the locking member can be easily assembled to the second rail.

The perspective view which shows the structure of the seat slide apparatus in 1st Embodiment. The side view of the sheet | seat which mounted | wore the seat slide apparatus of FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. FIG. 4 is a sectional view taken along line 4-4 of FIG. The top view of the locking member of FIG. FIG. 6-6 is a cross-sectional view of FIG. FIG. 7 is a cross-sectional view taken along 7-7 in FIG. 5; FIG. 8 is an enlarged cross-sectional view of the upper rail taken along line 8A-8A in FIG. The expanded sectional view of the upper rail at the time of inserting the latching claw of FIG. 1 in the hole for latching claws. FIG. 9 is an enlarged cross-sectional view of the upper rail taken along line 9A-9A in FIG. The expanded sectional view of the upper rail at the time of inserting the rotating shaft part of FIG. 1 in a shaft accommodation hole. Sectional drawing which shows the state in which the impact was added to the locking member shown in FIG. The perspective view which shows the structure of the seat slide apparatus in 2nd Embodiment. FIG. 12 is a plan view of the locking member shown in FIG. 11. The side view of the locking member shown in FIG. The bottom view of the locking member shown in FIG. The upper surface side perspective view which looked at the locking member shown in FIG. 11 from diagonally upward. The lower surface side perspective view which looked at the locking member shown in FIG. 11 from diagonally upward. The elements on larger scale of the rotating shaft part shown to FIG. 12B. FIG. 12 is a top view of the spring shown in FIG. 11. The side view of the spring shown in FIG. The perspective view of the upper rail and locking member in background art.

<First Embodiment>
A first embodiment of the present invention will be described with reference to FIGS.
<Outline configuration>
As shown in FIG. 1, the vehicle seat slide device 1 includes a lower rail 30 corresponding to a first rail, an upper rail 40 corresponding to a second rail, a locking member 20, and a spring 50.

The lower rail 30 extends in the longitudinal direction and is fixed on the vehicle floor 2. The longitudinal direction of the lower rail 30 is the same as the longitudinal direction L of the vehicle. The upper rail 40 is attached to the lower rail 30 so as to extend in the longitudinal direction thereof and to be relatively movable in the longitudinal direction of the lower rail 30.

The pair of lower rails 30 are spaced apart in the width direction W perpendicular to the longitudinal direction L of the vehicle. An upper rail 40 is assembled to each lower rail 30. As shown in FIG. 2, on the pair of upper rails 40, one seat 5 that forms a seating portion for an occupant is fixed.

A release handle 60 is connected between the upper rails 40. The release handle 60 extends operably from the upper rails 40 to the front of the seat 5. When the release handle 60 is pushed toward the vehicle floor 2, the upper rail 40 can move relative to the lower rail 30 together with the seat 5. Hereinafter, the configuration of the vehicle seat slide device 1 will be described in detail.

<Lower rail>
As shown in FIG. 3, the lower rail 30 includes a connecting wall portion 32, a pair of side wall portions 31, and a pair of folded wall portions 33.

The connecting wall 32 is formed in a rectangular flat plate shape and is fixed on the vehicle floor 2. The side wall portion 31 extends upward at substantially right angles from both ends of the connecting wall portion 32 in the width direction. The folded wall 33 is formed so as to extend from the front end of the side wall 31 to the inside of the lower rail 30 at a substantially right angle, and further, the front end to extend toward the connecting wall 32 at a substantially right angle.

As shown in FIG. 1, a plurality of rectangular lock holes 33a are formed at locations where both folded wall portions 33 of one lower rail 30 face each other. The plurality of lock holes 33 a are formed in the folded wall portions 33, and are arranged at regular intervals along the longitudinal direction of the lower rail 30. Each lock hole 33a opens upward in the height direction H of the vehicle orthogonal to the width direction W and the longitudinal direction L.

As shown in FIG. 4, each lock hole 33 a is formed in a substantially trapezoidal shape so that the hole width Wh 1 becomes smaller toward the vehicle floor 2 when viewed from the width direction W of the vehicle. That is, the lock hole 33a has two side surfaces 33b and 33c that face each other along the longitudinal direction L of the vehicle. The distance between the side surfaces 33b and 33c decreases as the vehicle floor 2 is approached.

The angle at which the two claw side surfaces 33b and 33c of the lock hole 33a intersect with the center line P of the lock hole 33 extending in the vehicle height direction H, that is, the height direction of the lower rail 30, is the tooth pressure angle θa1 and θa2 respectively. It is prescribed. In this example, the tooth pressure angle θa2 is an angle rotated clockwise by a predetermined angle with respect to the center line P of the lock hole. The tooth pressure angle θa1 is an angle rotated counterclockwise by a predetermined angle with respect to the center line P of the lock hole. In this example, both tooth part pressure angles θa1 and θa2 are set to the same value.

<Upper rail>
As shown in FIG. 3, the upper rail 40 includes a connecting wall portion 45, first and second

side wall portions

44 a and 44 b, and a pair of folded wall portions 46.

The connecting wall portion 45 of the upper rail 40 is formed in a rectangular flat plate shape like the connecting wall portion 32 of the lower rail 30. Both

side wall portions

44 a and 44 b extend substantially at right angles from both ends of the connecting wall portion 45 in the width direction W toward the vehicle floor 2. Further, the folded wall portion 46 extends outward and upward of the upper rail 40 from the tips of the

side wall portions

44a and 44b.

When the upper rail 40 is assembled to the lower rail 30, the tip of the folded wall portion 33 of the lower rail 30 is disposed between the

side wall portions

44a and 44b and the folded wall portion 46 of the upper rail 40. Then, the upper rail 40 is prevented from being separated and separated from the lower rail 30, so that the upper rail 40 can move along the lower rail 30.

Further, as shown in FIG. 1, a plurality of (for example, three) locking claw holes 49a to 49c arranged in the longitudinal direction are formed in the middle position of the upper rail 40 in the longitudinal direction. The intervals between the locking claw holes 49a to 49c are substantially the same as the intervals between the plurality of lock holes 33a. The locking claw holes 49a to 49c penetrate the upper rail 40 and are formed in a substantially rectangular shape that extends along the height direction of the upper rail 40 and is slightly curved. The locking claw holes 49a to 49c are formed from the

side wall portions

44a, 44b to a part of the connecting wall portion 45. The locking claw holes 49a to 49c correspond to first receiving holes.

Furthermore, a plurality of (for example, three) insertion grooves 46 a are formed at the upper end of each folded wall portion 46. The plurality of insertion grooves 46a are arranged in the longitudinal direction of the upper rail 40 so as to correspond to the plurality of locking claw holes 49a to 49c, respectively. Each insertion groove 46a penetrates the upper rail 40 in the width direction W and opens upward. The fitting groove 46a and the locking claw holes 49a to 49c are arranged at positions corresponding to a plurality of (for example, three) lock holes 33a adjacent to each other in the lower rail 30.

Further, shaft accommodating holes 47 that penetrate the upper rail 40 are formed in the

side wall portions

44a and 44b of the upper rail 40, respectively. The shaft accommodation hole 47 corresponds to a second accommodation hole. The two shaft receiving holes 47 are formed at positions closer to the release handle 60 than the locking claw holes 49a to 49c.

As shown in FIG. 4, each shaft receiving hole 47 is formed in a substantially trapezoidal shape so that the hole width Wh 2 becomes smaller toward the vehicle floor 2. That is, each shaft receiving hole 47 has two shaft side surfaces 47 a and 47 b that face each other in the longitudinal direction of the upper rail 40. The distance between the side surfaces 47a and 47b for both shafts decreases as it goes toward the vehicle floor 2.

The angle at which the two shaft side surfaces 47a and 47b intersect with the center line Q of the shaft receiving hole 47 extending in the height direction H, that is, the height direction of the upper rail 40, is defined as shaft portion pressure angles θb1 and θb2. In this example, the shaft portion pressure angle θb 2 is an angle rotated clockwise by a predetermined angle with respect to the center line Q of the shaft receiving hole 47. The shaft portion pressure angle θb1 is an angle rotated by a predetermined angle counterclockwise with respect to the center line Q of the shaft receiving hole 47. The shaft pressure angles θb1 and θb2 are set to the same value as each other, and are set to be larger than the tooth pressure angles θa1 and θa2.

Further, as shown in FIG. 1, spring holding holes 48 are formed at the boundary portions between the

side wall portions

44 a and 44 b and the connecting wall portion 45 in the upper rail 40. The two spring holding holes 48 are formed at a position closer to the release handle 60 than the shaft receiving hole 47.

As shown in FIG. 8A, the first end portion of the locking claw hole 49a of the second side wall portion 44b of the upper rail 40, more specifically, the lower right inner corner portion of the locking claw hole 49a, and the first side wall The length of a straight line connecting the second end portion of the locking claw hole 49a of the portion 44a, more specifically, the upper left outer corner portion of the locking claw hole 49a, is defined as a claw allowable length L1. The permissible claw length L1 is such that the claw members 22aR to 22cR and 22aL to 22cL, which will be described later, are rotated in the respective claw holes 49a while rotating the locking member 20 around the central axis along the longitudinal direction L. This is the length necessary for the insertion. The permissible claw lengths of the

other claw holes

49b and 49c are larger than the permissible claw length L1 of the claw hole 49a.

As shown in FIG. 9A, the first end of the shaft receiving hole 47 of the second side wall 44b of the upper rail 40, more specifically, the lower right inner corner of the shaft receiving hole 47, and the first side wall 44a. The length of a straight line connecting the second end portion of the shaft receiving hole 47, more specifically, the upper right outer corner portion of the shaft receiving hole 47, is defined as the shaft allowable length L2. The claw allowable length L2 is for inserting a plurality of

rotating shaft portions

26R and 26L, which will be described later, into the respective shaft accommodating holes 47 while rotating the locking member 20 around the central axis along the longitudinal direction L. This is the length required.

<Rolling member>
As shown in FIG. 3, the rolling members 16 are respectively provided between the folded-back wall portions 46 of the upper rail 40 and the side wall portions 31 of the lower rail 30 that are opposed thereto. The upper rail 40 moves along the longitudinal direction with respect to the lower rail 30 while rolling the rolling member 16 between the upper rail 40 and the lower rail 30.

<Locking member>
As shown in FIG. 1, the locking member 20 is installed in an internal space formed between the lower rail 30 and the upper rail 40 along the longitudinal direction of the lower rail 30.

As shown in FIG. 5, the locking member 20 includes a main body 21, two sets of locking claws 22aR to 22cR, 22aL to 22cL, a pair of

rotating shafts

26R and 26L, and an input unit 28. Is formed. The locking member 20 is manufactured by pressing a metal plate.

The main body 21 is formed in a substantially rectangular flat plate extending in the longitudinal direction. The main body 21 includes first and second side surfaces 29 L and 29 R extending in the longitudinal direction, and a distal end portion 23 that is positioned away from the release handle 60. Each of the locking claws 22aR to 22cR and 22aL to 22cL is formed at the distal end portion 23 of the main body portion 21, and is formed in a square bar shape protruding along the width direction thereof. The three locking claws 22aR to 22cR are formed on the first side surface 29R of the distal end portion 23, and the three locking claws 22aL to 22cL are formed on the second side surface 29L of the distal end portion 23. The locking claws 22aR to 22cR and the locking claws 22aL to 22cL are arranged along the longitudinal direction of the main body 21 at the same intervals as the lock holes 33a of the lower rail 30.

As shown in FIG. 6, the maximum claw rotation length L3 is defined by the length of the diagonal in the rectangular cross section formed by the tip 23 and the locking claws 22aL to 22cL when viewed from the longitudinal direction of the main body 21. In this example, the maximum claw rotation length L3 is the length of the diagonal line connecting the lower left corner of the tip 23 in the figure and the upper right corner of the locking claw 22a in the rectangular shape. When the permissible claw length L1 is larger than the maximum claw rotation length L3, the locking claws 22aR to 22cR and 22aL to 22cL can be inserted into the locking claw holes 49a to 49c. A specific assembling method will be described later. The input unit 28 is formed at the end of the main body 21 opposite to the tip 23.

As shown in FIG. 5, the

rotation shaft portions

26R, 26L of the locking member 20 are respectively disposed on both side surfaces 29R, 29L of the main body 21 between the locking claws 22aR-22cR, 22aL-22cL and the input portion 28. ing. As shown in FIG. 4, the rotation shaft portions 26 R and 26 L are directed from the side surfaces 29 R and 29 L of the main body portion 21 toward the vehicle floor 2 so that the tip surfaces 26 a of the rotation shaft portions 26 R and 26 L are along the longitudinal direction of the upper rail 40. It is formed in a curved plate shape. Both the

rotating shaft portions

26R and 26L face each other in the width direction below the main body portion 21.

As shown in FIG. 4, the front end surfaces 26a of the

rotation shaft portions

26R and 26L are formed by two curved surfaces 26b formed on both ends in the longitudinal direction of the main body portion 21, and the longitudinal direction of the main body portion 21 between the curved surfaces 26b. And a flat surface 26c extending to the surface. As shown by a two-dot chain line in FIG. 4, both the curved surfaces 26 b are formed along one circular arc drawn around the rotation center O 1 of the locking member 20. The flat surface 26 c is formed so as to remove a part of the arc near the vehicle floor 2 along the longitudinal direction of the main body 21.

Both curved surfaces 26b of the

rotating shaft portions

26R and 26L are in contact with the two shaft side surfaces 47a and 47b in the shaft receiving hole 47 at two points P1 and P2. Therefore, even if the assembly accuracy between the shaft receiving hole 47 and the

rotary shaft portions

26R and 26L is reduced due to a manufacturing error of the upper rail 40 or the lock member 20, the lock member 20 is used as the first rotary shaft portion. 26R and the first shaft accommodating hole 47 are supported at two points P1 and P2 and one point or two points which are in contact between the second rotating shaft portion 26L and the second shaft accommodating hole 47. . Therefore, rattling of the locking member 20 in the upper rail 40 can be suppressed.

As shown in FIG. 7, the maximum rotation of the shaft depends on the length of the maximum straight line among the straight lines connecting the vertices of the outer shape of the main body 21 and the first rotation shaft 26 R when viewed from the longitudinal direction of the main body 21. A length L4 is defined. In this example, the maximum shaft rotation length L4 is between the tip of the first rotation shaft portion 26R, more specifically, the lower left corner of the first rotation shaft portion 26R and the upper portion of the second side surface 29L. It is the length to tie.

When the maximum rotation length L4 is smaller than the above-described allowable shaft length L2, the

rotation shaft portions

26R and 26L can be assembled to the shaft accommodating hole 47 as described later. A specific assembling method will be described later.

As shown in FIG. 4, both rotating

shaft portions

26R and 26L are inserted into shaft receiving holes 47, respectively. The front end surfaces 26 a of both the

rotating shaft portions

26 R and 26 L, in particular, both the curved surfaces 26 b are in contact with both side surfaces 47 a and 47 b facing the longitudinal direction L of the shaft receiving hole 47. Each curved surface 26 b rolls on both shaft side surfaces 47 a and 47 b of each shaft receiving hole 47. As a result, the locking member 20 can be rotated about both the

rotation shaft portions

26R and 26L, that is, the rotation center O1. With the rotation of the locking member 20, the locking claws 22aR to 22cR and 22aL to 22cL of the locking member 20 are engaged with the locking holes 33a of the lower rail 30 and released from the locking holes 33a. It can move between positions.

<Spring>
As shown in FIG. 1, the spring 50 is formed of a single wire and is formed in a substantially U shape. Further, the spring 50 is located on the upper surface of the locking member 20 facing the connecting wall portion 45 of the upper rail 40 in the internal space formed between the lower rail 30 and the upper rail 40.

The spring 50 includes two holding portions 51, two urging portions 52, two contact portions 53, and four escape portions 54. In the spring 50, the holding portion 51, the urging portion 52, the contact portion 53, and the escape portion 54 are formed symmetrically with respect to the center line along the longitudinal direction of the spring 50. The spring 50 is formed so as to be elastically deformable in a direction in which each part approaches or separates.

Each holding part 51 is formed in a substantially U-shape so as to be located substantially in the middle in the longitudinal direction of the spring 50 and to protrude outward in the width direction W. That is, each holding part 51 is formed in a semicircular shape having a specific radius. Each holding portion 51 is inserted into each spring holding hole 48 from the inside of the upper rail 40. As a result, the spring 50 is held in the upper rail 40. FIG. 1 shows the shape of the spring 50 when held in the upper rail 40.

Each biasing portion 52 is formed at the tip of the spring 50, and when the spring 50 is disposed between the upper rail 40 and the locking member 20, the tip portion 23 of the locking member 20 faces the vehicle floor 2. And urge downward. Each abutting portion 53 is disposed between each urging portion 52 and each holding portion 51 and at a position closer to each urging portion 52 than each holding portion 51. Further, the contact portion 53 is located on the outermost side in the width direction of the spring 50 at a portion of the spring 50 extending from the holding portion 51 to the biasing portion 52. Therefore, when the spring 50 is positioned in the upper rail 40, each contact portion 53 comes into contact with each

side wall portion

44a, 44b by its urging force. This biasing force determines the position of the spring 50 in the width direction in the upper rail 40. Further, each contact portion 53 is disposed at a position close to the locking claws 22aR to 22cR and 22aL to 22cL, and the urging portion 52 is disposed at a desired position with respect to the upper surface of the locking member 20.

The four escape portions 54 are arranged at both ends of the two holding portions 51 in the longitudinal direction of the spring 50, and are formed so that the wire material of the spring 50 is recessed inward. Each escape portion 54 prevents the proximal end of each holding portion 51 from coming into contact with the peripheral edge portion of each spring holding hole 48 when each holding portion 51 is inserted into each spring holding hole 48. For example, in a configuration that does not include the relief portion 54, when the proximal end of the holding portion 51 comes into contact with the peripheral edge portion of each spring holding hole 48, the posture of each contact portion 53 and each biasing portion 52 is a locking member. There is a possibility that it is shifted from 20. In this regard, by forming each relief portion 54, each contact portion 53 and each biasing portion 52 are held in a desired posture within the upper rail 40. Thereby, the spring 50 can suitably apply an urging force to the locking member 20.

<Sheet position adjustment>
Next, an operation when the position of the seat 5 is adjusted by the vehicle seat slide device 1 will be described.

When no operating force is applied to the release handle 60, the locking claws 22aR to 22cR and 22aL to 22cL of the locking member 20 are held in the lock holes 33a of the lower rail 30 through the biasing force from the spring 50. . Thereby, the movement of the upper rail 40 with respect to the lower rail 30 is regulated.

When the operator lifts the release handle 60, the distal end portion 61 of the release handle 60 presses the input portion 28 of the locking member 20 toward the vehicle floor 2. Thereby, the counterclockwise force of FIG. 4 centering on the rotating shaft portions 26 R and 26 L of the locking member 20 is applied to the spring 50 and the locking member 20. When the force of the locking member 20 on the input portion 28 exceeds the urging force of the spring 50 against the locking member 20, the locking claws 22aR to 22cR and 22aL to 22cL are separated from the lower rail 30 and the locking claws 22aR to 22cR. , 22aL to 22cL escape from the lock hole 33a. At this time, the movement of the upper rail 40 with respect to the lower rail 30 is allowed. Therefore, the position of the seat 5 in the vehicle front-rear direction can be adjusted.

<Assembly of the locking member 20 to the upper rail 40>
In order to assemble the locking member 20 to the upper rail 40, the locking claws 22aR to 22cR and 22aL to 22cL are inserted into the locking claw holes 49a to 49c, and the

rotary shaft portions

26R and 26L are accommodated in the shafts. It is necessary to insert into the hole 47.

Here, first, the operation when the respective locking claws 22aR to 22cR and 22aL to 22cL are inserted into the respective locking claw holes 49a to 49c will be described.
As shown in FIG. 8B, first, the first locking claws 22aR to 22cR are inserted from the inside of the upper rail 40 into the upper portions of the respective locking claw holes 49a of the first side wall portion 44a. At this time, the locking member 20 is inclined in the upper rail 40. After the insertion is completed, the second locking claws 22aL to 22cL are inserted into the respective locking claw holes 49a of the second side wall portion 44b. The first locking claws 22aR to 22cR are rotated in the clockwise direction in the drawing. The permissible nail length L1 is set to be greater than the maximum nail rotation length L3. As a result, the second locking claws 22aL to 22cL do not come into contact with the lower edge of the locking claw hole 49a in the second side wall portion 44b, so that the second locking claws 22aL to 22cL become the locking claw holes 49a. Can be inserted into.

For example, when the permissible claw length L1 is equal to or less than the maximum claw rotation length L3, when the locking member 20 is rotated clockwise in the figure, the tips of the locking claws 22aL to 22cL on the second side surface 29L are It contacts the lower edge portion of the upper rail 40 below the locking claw hole 49a in the second side wall portion 44b. Therefore, the locking member 20 cannot be assembled to the upper rail 40.

Next, the operation when the

rotary shaft portions

26R and 26L are inserted into the shaft accommodation holes 47 will be described.
As shown in FIG. 9B, first, the first rotating shaft portion 26R is inserted from the inside of the upper rail 40 into the shaft receiving hole 47 of the first side wall portion 44a. At this time, the locking member 20 is inclined in the upper rail 40. After the insertion is completed, in order to insert the second rotating shaft portion 26L into the shaft accommodating hole 47 of the second side wall portion 44b, the locking member 20 is moved in the first rotation as shown by the arrow in FIG. 9B. The shaft portion 26R is rotated in the clockwise direction in the drawing.

At this time, the shaft allowable length L2 is set to be larger than the shaft maximum rotation length L4, so that the second rotation shaft portion 26L is below the upper rail 40 below the shaft receiving hole 47 in the second side wall portion 44b. The rotating shaft portion 26 L can be inserted into the shaft receiving hole 47 because it does not contact the edge portion.

For example, when the allowable shaft length L2 is equal to or less than the maximum shaft rotation length L4, when the locking member 20 is rotated clockwise in the drawing, the second rotation shaft portion 26L is moved to the second side wall. It contacts the lower edge of the upper rail 40 below the shaft receiving hole 47 in the portion 44b. Therefore, the locking member 20 cannot be assembled to the upper rail 40.

Further, the

rotary shaft portions

26R and 26L may be press-fitted into the shaft accommodation holes 47 of the upper rail 40 by the following method. Specifically, an external force is applied to the

rotary shaft portions

26R and 26L in a direction in which the

rotary shaft portions

26R and 26L approach each other. By this external force, the locking member 20 is compressed in the width direction, so that the locking member 20 can be inserted into the upper rail 40. Thereby, the

rotating shaft portions

26R and 26L can be inserted into the shaft accommodating hole 47 of the upper rail 40. The

rotary shaft portions

26R and 26L have a shape that is more easily bent in the width direction than the columnar rotary shaft portion disclosed in Patent Document 1. For this reason, the

rotating shaft portions

26R and 26L can be easily inserted into the shaft accommodating hole 47 of the upper rail 40 through this press-fitting.

<Operation when impact is applied to the locking member 20>
As shown in FIG. 10, it is assumed that an impact force Fimp is applied to the locking member 20 in the direction toward the vehicle floor 2. Along with the impact force Fimp, the

rotary shaft portions

26R and 26L receive a first reaction force from the shaft side surfaces 47a and 47b. Further, each of the locking claws 22aR to 22cR and 22aL to 22cL receives a second reaction force from each of the claw side surfaces 33b and 33c. Since the shaft portion pressure angles θb1 and θb2 are set larger than the tooth portion pressure angles θa1 and θa2, the first reaction force is larger than the second reaction force. Accordingly, the

rotary shaft portions

26R and 26L move upward in the shaft receiving hole 47 before the locking claws 22aR to 22cR and 22aL to 22cL. For this reason, the locking member 20 slightly rotates in the clockwise direction in the drawing from the position indicated by the two-dot chain line in FIG. 10 toward the position indicated by the solid line in FIG. 10. Accordingly, the locking claws 22aR to 22cR and 22aL to 22cL advance toward the bottom surface of the lock hole 33a. For this reason, the locking claws 22aR to 22cR and 22aL to 22cL of the locking member 20 hold the locking positions fitted in the lock holes 33a of the lower rail 30.

As described above, according to the embodiment described above, the following effects can be obtained.
(1) When the locking member 20 is assembled to the upper rail 40, the first rotating shaft portion 26R is inserted into the shaft receiving hole 47 of the first side wall portion 44a from the inner side of the upper rail 40. After the insertion, the locking member 20 is rotated so that the second rotating shaft portion 26L is inserted into the shaft receiving hole 47 of the second side wall portion 44b. At this time, since the allowable shaft length L2 is set to be larger than the maximum shaft rotation length L4, the second rotation shaft portion 26L does not contact the edge portion of the shaft receiving hole 47 in the second side wall portion 44b. The insertion of the second rotating shaft portion 26L into the shaft receiving hole 47 is not hindered. Therefore, the second rotating shaft portion 26L is reliably inserted into the shaft accommodating hole 47 in the second side wall portion 44b, and the locking member 20 can be easily assembled to the upper rail 40.

(2) When the locking member 20 is assembled to the upper rail 40, the locking claws 22aR to 22cR of the first side surface 29R are inserted into the locking claw holes 49a to 49c of the first side wall portion 44a from the inside of the upper rail 40. To do. After the insertion, the locking member 20 is rotated to insert the locking claws 22aL to 22cL of the second side surface 29L into the locking claw holes 49a to 49c of the second side wall portion 44b. At this time, the permissible claw length L1 is set to be larger than the claw maximum rotation length L3, so that the claw 22aL to 22cL are engaged with the claw holes 49a to 49c in the second side wall 44b. Therefore, the insertion of the locking claws 22aL to 22cL is not hindered. Therefore, the locking claws 22aL to 22cL are surely inserted into the locking claw holes 49a to 49c in the second side wall portion 44b, and the locking member 20 can be easily assembled to the upper rail 40.

(3) The

rotation shaft portions

26R and 26L are formed to be curved with respect to the main body portion 21 of the locking member 20, as shown in FIG. Further, the distal end surface 26a includes curved surfaces 26b at both ends so that the distal end surface 26a of the

rotary shaft portions

26R and 26L can roll with respect to the shaft side surfaces 47a and 47b of the shaft receiving hole 47. The

rotary shaft portions

26R and 26L can be formed by pressing from a plate material integral with the main body portion 21 of the locking member 20. Therefore, the locking member 20 having the

rotating shaft portions

26R and 26L can be easily manufactured.

(4) The

rotary shaft portions

26R and 26L are configured such that the tip of the semicircle is removed along the longitudinal direction of the main body portion 21 when viewed from the width direction of the main body portion 21. Therefore, the maximum shaft rotation length L4 can be reduced. Therefore, it becomes easy to set the allowable shaft length L2 to be larger than the maximum shaft rotation length L4.

In addition, each of the

rotating shaft portions

26R and 26L functions as a rotating shaft by the two curved surfaces 26b. In this case, a simpler configuration can be realized while functioning in the same manner as another virtual locking member having a cylindrical rotation axis indicated by a two-dot chain line in FIG.

(5) As shown in FIG. 4, in the shaft receiving hole 47, the distance between the two shaft side surfaces 47 a and 47 b in contact with the rotating shaft portions 26 R and 26 L becomes smaller toward the vehicle floor 2. According to this configuration, the curved surfaces 26b of the

rotating shaft portions

rotary shaft portions

26R and 26L is reduced due to a manufacturing error of the upper rail 40 or the lock member 20, the lock member 20 has the first rotary shaft portion 26R. The two points P1 and P2 that are in contact with the shaft receiving hole 47 and the one or two points that are in contact with the shaft receiving hole 47 on the opposite side are supported by the second rotating shaft portion 26L. Therefore, rattling of the locking member 20 in the upper rail 40 can be suppressed.

(6) As shown in FIG. 4, the shaft pressure angles θb1 and θb2 are set larger than the tooth pressure angles θa1 and θa2. As the pressure angles θa1, θa2, θb1, and θb2 of the side surfaces 33b, 33c, 47a, and 47b are larger, the locking claws 22aR to 22cR and 22aL to 22cL or the

rotating shaft portions

26R and 26L are added to the side surfaces 33b, 33c, 47a, and 47b. As a result, the force increases, and the reaction force received by the locking claws 22aR to 22cR and 22aL to 22cL or the

rotating shaft portions

26R and 26L also increases. For this reason, for example, even when an impact force Fimp is applied to the locking member 20, by setting the pressure angle to the above relationship, the reaction force received by the

rotary shaft portions

26R and 26L is changed to the locking claws 22aR to 22cR, It becomes larger than the reaction force which 22aL-22cL receives. Therefore, when the impact force Fimp is applied to the locking member 20, the rotating

shafts

26R and 26L are first removed from the shaft receiving hole 47 by the reaction force, so that the locking claws 22aR to 22cR and 22aL to 22cL are locked. It is held in the hole 33a. As a result, inadvertent escape of the locking claws 22aR to 22cR and 22aL to 22cL from the lock hole 33a is suppressed, and as a result, the lower rail 30 is prevented from being able to move relative to the upper rail 40.

(7) As shown in FIG. 4, the tooth pressure angles θa1 and θa2 on the two claw side surfaces 33b and 33c of each lock hole 33a are set to be the same, and the two shaft side surfaces 47a and The shaft pressure angles θb1 and θb2 in 47b are set to be the same. Thereby, the shape of the lock hole 33a and the shaft accommodating hole 47 is line-symmetric with respect to the center lines P and Q of each hole. Therefore, formation of the lock hole 33a and the shaft accommodation hole 47 becomes easy.

(8) The locking member 20 is rotated clockwise while the first locking claws 22aR to 22cR are in contact with the upper end of FIG. 8B in the locking claw hole 49a of the first side wall 44a. . At this time, the locking claw hole 49a of the second side wall portion 44b is formed in a size that allows the second locking claw 22aL to 22cL to enter. The locking claw hole 49a of the first side wall 44a is also formed from the same viewpoint. With this configuration, the locking member 20 can be easily assembled to the upper rail 40.

<Second Embodiment>
A second embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 11, the vehicle seat slide device 1 of the present embodiment includes substantially the same components as those of the first embodiment. The first embodiment is different from the second embodiment particularly in the configuration of the locking member and the spring.

Specifically, in the first embodiment, the

rotating shaft portions

26R and 26L are curved. In the second embodiment, as shown in FIGS. 12A to 12C, 13A, and 13B, the

rotating shaft portions

27R and 27L are formed in a rectangular flat plate shape that extends in the longitudinal direction of the locking member 20. In addition, the same plane is formed with respect to the main body 21 of the locking member 20. The two

rotary shaft portions

27R and 27L extend from the main body portion 21 in opposite directions.

As shown in FIG. 14, each rotation shaft portion 27 R, 27 L includes a pair of side surfaces 27 c extending in the height direction of the main body portion 21 when viewed from the width direction of the main body portion 21. Each side surface 27 c includes a curved surface 27 b formed at an end portion close to the vehicle floor 2. The curved surface 27b is formed so as to curve toward the center of the

rotation shaft portions

27R and 27L as it goes toward the vehicle floor 2. Similar to the first embodiment, both the

rotating shaft portions

26R and 26L are inserted through the shaft receiving holes 47, respectively. At this time, both curved surfaces 27 b are in contact with the shaft side surface 47 b of the shaft receiving hole 47. Thereby, the locking member 20 of the second embodiment is also supported to be rotatable with respect to the upper rail 40. The vehicle seat slide device 1 according to the second embodiment operates in the same manner as in the first embodiment.

As shown in FIGS. 15A and 15B, in the second embodiment, the spring 50 includes a pair of tips 57 located at the tips thereof. Each tip 57 is bent inward in the width direction, and extends substantially perpendicular to the longitudinal direction of the spring 50. Each tip 57 is located adjacent to the longitudinal direction of the spring 50.

As described above, according to the embodiment described above, the following operations and effects can be obtained particularly as compared with the first embodiment.
(9) In any of the embodiments, when a collision force along the vehicle front-rear direction L is applied to the vehicle seat slide device 1, the rotation shaft portions 26 R, 26 L, 27 R, 27 L A collision force is received below the main body 21 through the side surfaces 47a and 47b. For example, when the vehicle receives an impact from the rear, the

rotary shaft portions

26R and 26L receive a collision force in the left direction in the drawing with respect to the point P2 in FIG. 4 through the shaft side surface 47b. Thus, since the locking member 20 receives a collision force below the main body portion 21, the locking member 20 has a rotational moment in a direction in which the input portion 28 approaches the distal end portion 61 of the release handle 60. Arise. In the first embodiment, the collision member 20 is applied with the collision force on the

rotation shaft portions

26R and 26L positioned toward the vehicle floor 2 with respect to the main body portion 21 thereof. In the second embodiment, the collision force is applied to the locking member 20 on the

rotary shaft portions

27R and 27L existing at the same position as the main body portion 21 in the height direction H of the vehicle. It is known that the moment increases as the point of application where the collision force is applied approaches the vehicle floor 2 from the main body 21. Therefore, the moment applied to the locking member 20 at the time of the collision is smaller in the second embodiment than in the first embodiment. For this reason, in the second embodiment, since the moment applied to the locking member 20 is relatively small at the time of the collision, the locking member 20 is prevented from being deformed by the moment. Since deformation of the locking member 20 is suppressed, a collision load in the vehicle front-rear direction can be reliably received, and the stability of holding the locked state when a collision force is applied is improved.

(10) Each of the pair of tips 57 of the spring 50 extends inward in the width direction W. In this case, both the tips 57 can be in line contact with the locking member 20, respectively. Therefore, the area where the spring 50 contacts the locking member 20 is increased. Therefore, the locking member 20 is more stably held by the spring 50.

In addition, the said embodiment can be implemented with the following forms which changed this suitably.
-In 2nd Embodiment, although both rotating

shaft parts

27R and 27L were formed in rectangular plate shape, for example,

rotating shaft parts

27R and 27L are the column shape extended from the main-body part 21 in the width direction. May be formed.

In the first embodiment, the

rotation shaft portions

26R and 26L are formed to bend in the direction of the vehicle floor 2 with respect to the main body portion 21 of the locking member 20 so that the front end surface 26a is along the longitudinal direction. It had been. However, the

rotating shaft portions

26R and 26L may be formed in a substantially L shape by being bent at a substantially right angle with respect to the main body portion 21.

In the first and second embodiments, the lower rail 30 corresponding to the first rail is fixed to the vehicle floor 2, and the upper rail 40 corresponding to the second rail is configured to be movable relative to the lower rail 30. . However, the second rail may be fixed to the vehicle floor 2 and the first rail may be configured to be movable relative to the lower rail 30.

-You may apply the vehicle seat slide apparatus 1 in 1st and 2nd embodiment other than a vehicle.
In the first and second embodiments, the numbers of the locking claws 22aR to 22cR, 22aL to 22cL and the locking claw holes 49a to 49c of the locking member 20 can be changed as appropriate.

In the first and second embodiments, the tooth pressure angles θa1 and θa2 on the two side surfaces 33b and 33c of the lock hole 33a are set to be the same, and the shaft portions on the two

side surfaces

47a and 47b of the shaft receiving hole 47 are set. The pressure angles θb1 and θb2 are set to be the same, but may be set to different pressure angles.

The values of the pressure angles θa2a1, θa2a2, θa2b1, and θa2b2 in the first and second embodiments can be changed as appropriate.
-In 1st and 2nd embodiment, the plane part 26c is formed in the front end surface 26a of the rotating shaft part 26. As shown in FIG. However, the flat surface portion 26c may be omitted, and the entire tip surface 26a of the rotating shaft portion 26 may be formed in a curved shape. In this case, the shaft accommodating hole 47 may be formed in a cylindrical shape.

The locking member 20 in the first and second embodiments may be manufactured using casting or the like.
-In 1st and 2nd embodiment, the front end surface 26a of

rotating shaft part

26R, 26L was provided with the plane 26c formed between the two curved surfaces 26b. However, the plane 26c may be omitted. In this case, the tip surface 26a may be formed in a single semicircular shape.

DESCRIPTION OF SYMBOLS 1 ... Vehicle seat slide apparatus, 2 ... Vehicle floor, 5 ... Seat, 16 ... Rolling member, 20 ... Locking member, 21 ... Main-body part, 22aL-22cL, 22aR-22cR ... Locking claw, 23 ... Tip part , 26 ... Rotating shaft part, 26a ... Tip face, 26b ... Curved surface, 26c ... Plane, 28 ... Input part, 30 ... Lower rail as first rail, 31 ... Side wall part, 32 ... Connecting wall part, 33 ... Folding wall part 33a ... Lock hole, 40 ... Upper rail as the second rail, 44a ... First side wall, 44b ... Second side wall, 45 ... Connection wall, 46 ... Folding wall, 46a ... Insertion groove, 47 ... Shaft housing hole as second housing hole, 48 ... Spring holding hole, 49a to 49c ... Locking claw hole as first housing hole, 50 ... Spring, 51 ... Holding section, 52 ... Biasing section, 53 ... Contact part, 54 ... Escape part, 60 ... Release c Dollar.

Claims

The first rail;
A second rail coupled to the first rail so as to be relatively movable along a longitudinal direction of the first rail;
A locking member rotatably supported in the second rail,
The second rail includes first and second side wall portions facing in the width direction orthogonal to the longitudinal direction of the second rail,
A first accommodation hole and a second accommodation hole into which a part of the locking member is inserted are respectively formed in the first and second side wall portions,
The locking member is
The main body,
First and second side surfaces extending in the longitudinal direction of the main body,
A locking position that extends from the first and second side surfaces to the outside of the second rail through the first receiving hole and is locked to the first rail according to the rotation position of the locking member. And a locking claw that moves between a release position spaced from the first rail,
A first rotating shaft portion formed on the first side surface of the main body portion and rotatably inserted into a second accommodation hole of the first side wall portion of the second rail;
A second rotating shaft portion that is formed on the second side surface of the main body portion and is rotatably inserted into a second accommodation hole of the second side wall portion of the second rail;
The first end portion in the height direction perpendicular to the longitudinal direction and the width direction of the main body portion in the second accommodation hole of the first side wall portion and the height in the second accommodation hole of the second side wall portion. The axial allowable length is defined by the length of an imaginary straight line connecting the second end opposite to the first end in the vertical direction,
The maximum rotation length for the shaft is defined by the length of a virtual straight line connecting the second side surface of the main body portion and the tip of the first rotation shaft portion formed on the first side surface,
A seat slide device in which the shaft allowable length is set to be larger than the shaft maximum rotation length.
The seat slide device according to claim 1,
An imaginary straight line connecting the first end in the height direction in the first accommodation hole in the first side wall and the second end in the height direction in the first accommodation hole in the second side wall. The allowable length for nails is defined by the length of
The maximum rotation length of the claw is defined by the length of a virtual straight line connecting the first side surface of the main body portion of the locking member and the tip of the locking claw formed on the second side surface,
A seat slide device in which the nail permissible length is set larger than the maximum nail rotation length.
The seat slide device according to claim 1 or 2,
The first and second rotating shaft portions are formed to be curved with respect to the main body portion so as to face each other in the width direction of the main body portion,
A seat slide device in which at least a part of each rotation shaft portion is formed in a curved shape so that a tip surface of each rotation shaft portion can roll along a side surface forming the second accommodation hole.
The first rail;
A second rail coupled to the first rail so as to be relatively movable along a longitudinal direction of the first rail;
A locking member rotatably supported in the second rail,
The second rail includes first and second side wall portions facing in the width direction perpendicular to the longitudinal direction of the second rail,
A first accommodation hole and a second accommodation hole into which a part of the locking member is inserted are respectively formed in the first and second side wall portions,
The locking member is
The main body,
A first portion formed in a curved shape so as to extend from the main body portion to both sides along the width direction and to roll along the side surface forming the second accommodation hole. First and second rotating shafts;
Move between a locking position locked to the first rail and a release position spaced apart from the first rail according to the rotation position of the locking member via the first and second rotating shafts. A seat slide device provided with a locking claw to perform.
The seat slide device according to claim 4,
The locking member includes first and second side surfaces extending in a longitudinal direction in the main body portion,
The first end in the height direction perpendicular to the longitudinal direction and the width direction of the main body in the second accommodation hole of the first side wall, and the second accommodation hole of the second side wall. The allowable length for an axis is defined by the length of a virtual straight line connecting the second end opposite to the first end in the height direction,
The maximum rotation length for the shaft is defined by the length of a virtual straight line connecting the second side surface of the main body portion and the tip of the first rotation shaft portion formed on the first side surface,
A seat slide device in which the shaft allowable length is set to be larger than the shaft maximum rotation length.
The seat slide device according to claim 3 or 5,
The front end surface of each rotating shaft portion is
A plane located along the longitudinal direction of the main body, located on the tip side of the rotary shaft in the height direction of the second housing hole;
2 formed on both sides of the plane in the longitudinal direction of the main body portion, positioned on the same virtual arc as viewed from the width direction of the main body portion, and opposed in the longitudinal direction of the main body portion of the second accommodation hole. A seat slide device having two curved surfaces that are slidably in contact with one side surface.
The seat slide device according to claim 6,
A seat slide device in which a distance between two side surfaces of the second accommodation hole is set to be smaller as the distance from the first rail approaches the first rail along the height direction of the main body.
The first rail;
A second rail coupled to the first rail so as to be relatively movable along a longitudinal direction of the first rail;
A locking member rotatably supported in the second rail,
The second rail includes first and second side walls facing each other along a width direction orthogonal to the longitudinal direction of the first rail,
A first accommodation hole and a second accommodation hole into which a part of the locking member is inserted are respectively formed in the first and second side wall portions,
The first rail is formed with a lock hole having two claw side surfaces facing each other,
The locking member is
The main body,
Two claw side surfaces of the lock hole in the first rail according to the rotation position of the locking member, extending to the outside of the second rail along the width direction through the first accommodation holes. A locking claw that moves between a locking position located between and a release position that has escaped from the locking hole;
Each of the first and second side wall portions is rotatably inserted into the second accommodation hole, and is rotatably supported between the two side surfaces facing each other in the second accommodation holes. A first and a second rotating shaft, and
The tooth portion pressure angle is defined by the angle at which the side surfaces of the claw in the lock hole intersect with the direction in which the locking claw rotates, and with respect to the height direction perpendicular to the longitudinal direction and the width direction. A seat slide device in which a shaft portion pressure angle is defined by an angle at which the side surfaces for each shaft in the second housing hole intersect, and the shaft portion pressure angle is set larger than the tooth portion pressure angle.
The seat slide device according to claim 8,
A point where each of the rotating shaft portions is in contact with the two side surfaces for the shaft and a point where each of the locking claws is in contact with the two side surfaces for the claw are set horizontally along the extending direction of the seat slide device. ,
The seat slide device in which the tooth portion pressure angles on the two claw side surfaces of the lock hole are set to be the same, and the shaft portion pressure angles on the two shaft side surfaces of the second accommodation hole are set to be the same. .