WO2009139348A1

WO2009139348A1 - Seat sliding device

Info

Publication number: WO2009139348A1
Application number: PCT/JP2009/058757
Authority: WO
Inventors: 学二木村; 祐輔佐藤; 健介三好
Original assignee: 株式会社今仙電機製作所
Priority date: 2008-05-16
Filing date: 2009-05-11
Publication date: 2009-11-19
Also published as: CN102026843A

Abstract

Provided is a seat sliding device that prevents malfunctioning of operating members. A locking member (50) is used to fix (lock) an upper rail (20), which is attached to a vehicle seat, and a lower rail (30), which is attached to the vehicle floor via a front and a rear foot, to make them mutually immovable. Said locking member (50) pivots around a pivotal center (L), from which a locking catch (55) of a pivoting member (50b) extends in the sliding direction, in response to operation of an operating lever, and said pivotal center (L) is located at a position remote from the locking catch (55).

Description

Seat slide device

The present invention relates to a seat slide device for adjusting a vehicle seat back and forth.

Conventionally, as a seat slide device for adjusting a vehicle seat back and forth, a vehicle seat slide device shown in Patent Document 1 is known. In this vehicle seat slide device locking mechanism, the locking lever claw that is fixed to the upper rail is tiltably engaged with the lower rail engaging hole and the upper rail engaging hole. Lock immovable. Then, when the lock lever is tilted by operating the operation lever and the pawl is pulled out from the engagement hole of the lower rail and the engagement hole of the upper rail, the lock is released.

JP 2002-154356 A

By the way, when the vehicle on which the passenger is boarded collides or suddenly brakes, the lock mechanism is unlocked by accidentally touching the operation lever and tilting the operation lever in the unlocking direction. The case where it will be in a state is assumed. Further, it is assumed that the lock mechanism is unlocked when the operation lever is tilted in the unlocking direction due to the weight of the operation lever at the time of a collision or sudden braking as described above. In order to solve this problem, it is necessary to make the lock mechanism difficult to unlock, and for this purpose, it is necessary to increase the operation stroke when operating the operation lever.

When the lock lever is turned around the rotation center extending in the rail sliding direction according to the tilt of the operation lever by the operation of the operation lever, the operation lever is provided with a lock lever. The operating stroke of the operating lever is determined by the amount of movement of the portion to be applied. For this reason, in order to increase the operating stroke of the operating lever, the center of tilting of the operating lever is moved to the lock lever side to change the ratio between the operating stroke of the operating lever and the amount of movement of the urging part of the lock lever. It is done.

However, if the tilting center of the operation lever is moved away from the center of gravity by moving the tilting center of the control lever to the lock lever side, there is a problem that the operation lever is likely to swing.

The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a seat slide device that prevents erroneous operation of an operation member.

In order to achieve the above object, in the seat slide device according to claim 1, the lower rail member (30) fixed to the vehicle body (B) and the lower rail member fixed to the seat (S) are provided. The upper rail member (20) provided slidably with respect to the lower rail member, the lower rail side engaged portion (35a) of the lower rail member, and the upper rail side engaged portion (22a, 23a) of the upper rail member. A lock member (50) having a detachable lock side engagement portion (55), a lock state in which the lock side engagement portion engages with the lower rail side engagement portion and the upper rail side engagement portion, and the lock In a seat slide device (10) comprising an operation member (70) operated to switch between a lock release state for releasing the state, the lock member includes: According to the operation of the operation member, the lock-side engagement portion rotates around a rotation center (L) extending in the sliding direction, and the rotation center is provided at a position separated from the lock-side engagement portion. It is a technical feature.

According to the first aspect of the present invention, the lock member rotates about the rotation center where the lock side engagement portion extends in the sliding direction in accordance with the operation of the operation member, and the rotation center is separated from the lock side engagement portion. It is provided at the position.

As described above, since the rotation center and the lock-side engagement portion are separated from each other, the lock-side engagement portion in the locked state is compared with the case where the rotation center and the lock-side engagement portion are close to each other. The amount of movement of the portion of the lock member that moves in accordance with the operation of the operation member when releasing the engagement between the lower rail side engaged portion and the upper rail side engaged portion increases. Thereby, the operation stroke in unlocking operation can be enlarged.
Therefore, erroneous operation of the operation member can be prevented.

According to a second aspect of the present invention, the lock member includes a rotation member that rotates about the rotation center and in which a lock-side engagement portion is formed at a position away from the rotation center. Urges a portion spaced from the rotation center of the rotation member when switching to the unlocked state.

In this way, the operation member biases the part separated from the rotation center of the rotation member when switching to the unlocked state, so compared with the case of energizing the part near the rotation center of the rotation member, The amount of movement of the urging portion of the rotating member that moves according to the operation of the operating member when releasing the locked state increases. Thereby, the operation stroke in lock release operation can be enlarged more.
Therefore, erroneous operation of the operating member can be reliably prevented.

According to a third aspect of the present invention, the lock member includes a support member that rotatably supports the rotation member with the rotation center as a center, and the rotation member is positioned away from the lock-side engagement portion. One or a plurality of through holes are formed in the support member, and the support member can be inserted into the through hole and can be rotated relative to the through hole in the inserted state. Only formed.

As described above, when one or a plurality of through holes formed in the rotating member is inserted into the support piece formed in the support member corresponding to the through hole, the support piece is inserted into the through hole. Therefore, the rotation member can be rotated relative to the through hole, and the rotation member is supported by the support member so as to be rotatable.
Thereby, a rotation member can be rotatably supported by a support member by simple structure.

In the invention of claim 4, the support piece includes a support portion having a C-shaped cross section, and is inserted into the through hole through the support portion so as to be relatively rotatable. Thereby, since the rotation member is rotatably supported by the support part formed in the C-shaped cross section of the support piece of the support member in the through hole, it is difficult to remove the rotation member from the support member. Can do.

In the invention of claim 5, the rotating member is formed with one or a plurality of projecting portions projecting in a direction away from the lock side engaging portion from a portion separated from the lock side engaging portion, In the support member, when the support piece is inserted through the through-hole, the protrusion can be inserted, and an opening that is slightly wider than the protrusion in the sliding direction is formed by the number of the protrusions.

Thereby, when the rotation member rotates about the rotation center, the movement of the rotation member in the sliding direction is limited by the opening, and thus the rotation direction of the rotation member is not stable. Can be suppressed.

In the invention of claim 6, the lock member includes a biasing member for locking that biases the rotating member so as to maintain the locked state with respect to the support member. After assembling the lock member to the upper rail member, both ends of the urging member for maintaining the rotation member of the lock member in a locked state with respect to the upper rail member are provided on both the rotation member and the upper rail member. It is possible to assemble. In this case, it is necessary to assemble one end of the urging member to a portion of the upper rail member that does not affect the sliding between the upper rail member and the lower rail member, and the assembling work is difficult.

Therefore, the locking member itself includes a urging member for locking that urges the rotating member to be locked with respect to the support member, so that the urging member is attached to the locking member fixed to the upper rail member. Since the operation | work to engage etc. becomes unnecessary, assembly | attachment property improves and manufacturing cost can be reduced.

It is a side view which shows the structure outline | summary of the vehicle seat by which the seat slide apparatus which concerns on this 1st Embodiment is installed. FIG. 2 is a partially exploded perspective view of the seat slide device of FIG. 1. It is sectional drawing of the seat slide apparatus of FIG. FIG. 4 is a cross-sectional view taken along line 4-4 shown in FIG. It is an enlarged view in the ellipse by the dashed-dotted line II shown in FIG. FIG. 6 is an exploded perspective view of the lock member of FIG. 5. It is an enlarged view in the ellipse by the dashed-dotted line III shown in FIG. FIG. 8 is an exploded perspective view of the urging member in FIG. 7. 9A is a cross-sectional view showing a locked state by a lock member at a cut surface corresponding to line 9-9 shown in FIG. 3, and FIG. 9B is a cross-sectional view showing a unlocked state by the lock member. It is. It is a perspective view which shows the locking member of the seat slide apparatus which concerns on 2nd Embodiment of this invention. It is a disassembled perspective view of the lock member concerning this 2nd Embodiment.

[First Embodiment]
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a schematic configuration of a vehicle seat S on which a seat slide device 10 according to the first embodiment is installed. FIG. 2 is a partially exploded perspective view of the seat slide device 10 of FIG. FIG. 3 is a partial cross-sectional view of the seat slide device 10 of FIG. 4 is a cross-sectional view taken along a line 4-4 shown in FIG.

As shown in FIGS. 1 to 3, the seat slide device 10 fixes the vehicle seat S to the vehicle floor B so as to be slidable back and forth, and mainly includes an upper rail 20 fixed to the vehicle seat S; The lower rail 30 fixed to the vehicle floor B via the front and rear foot 31, the lock member 50 capable of fixing (locking) the upper rail 20 and the lower rail 30 so as not to move relative to each other, and the lock according to the operation of the operation lever 70 A pair of urging members 60 capable of urging in the rotational direction for unlocking the member 50 (only one of them is shown in FIGS. 1 and 2) and the upper rail 20 by the pair of locking members 50 are provided. And an operation lever 70 operated to switch between a locked state of the lower rail 30 and a unlocked state for releasing the locked state.

As shown in FIG. 4, the upper rail 20 is substantially horizontal to the vehicle floor B, and an upper wall 21 to which the vehicle seat S is attached via a bracket or the like not shown, and a side wall 22 that is suspended from both ends of the upper wall 21. And a connecting portion 23 that is bent upward and bent from the lower end of each side wall 22, and an inclined portion 24 that holds the first steel ball 41 of the retainer 40 in a space between the lower rail 30.

The one side wall 22 and the connecting portion 23 connected to the side wall 22 are provided with five

notches

22a and 23a that can be engaged with lock claws 55 (described later) of the lock member 50, respectively.

The lower rail 30 is substantially horizontal to the vehicle floor B, faces the upper wall 21 of the upper rail 20 and is fixed to the vehicle floor B via the front and rear feet 31, and extends upward from both ends of the bottom wall 32. A first side portion 33, a flange portion 34 provided substantially parallel to the bottom wall 32 from the upper end of each first side portion 33 toward the center, and a first side portion from the terminal of each flange portion 34 toward the bottom wall 32. 33 and a second side portion 35 extending substantially in parallel.

The second side portion 35 corresponding to each notch 22a of the side wall 22 and each notch 23a of the connecting portion 23 is provided with five or more notches 35a formed in the same manner as the

notches

22a and 23a. .

The upper rail 20 is arranged such that the upper wall 21 faces the bottom wall 32 of the lower rail 30 and the inclined portion 24 of the upper rail 20 enters the space between the first side portion 33 and the second side portion 35 of the lower rail 30. Has been. The first steel ball 41 of the retainer 40 is disposed between the corner portion between the first side portion 33 and the flange portion 34 of the lower rail 30 and the inclined portion 24 of the upper rail 20, and the bottom wall 32 of the lower rail 30. The second steel ball 42 of the retainer 40 is disposed between the corner portion between the first side portion 33 and the connecting portion 23 of the upper rail. With the first steel ball 41 and the second steel ball 42 held by the retainer 40, the upper rail 20 and the lower rail 30 can slide smoothly in the vehicle front-rear direction.

FIG. 5 is an enlarged view of the inside of the ellipse along the alternate long and short dash line II shown in FIG. FIG. 6 is an exploded perspective view of the lock member 50 of FIG.
As shown in FIGS. 5 and 6, the lock member 50 includes a lock bracket 50a and a rotation member 50b. The lock bracket 50a is formed in a substantially L-shaped cross section by a top plate 51 provided with two round holes 51a in the vicinity of both ends in the longitudinal direction and a side plate 52 extending downward from one end of the top plate 51. Yes.

The side plate 52 is provided with three support pieces 53 that are substantially evenly arranged in the longitudinal direction. Each support piece 53 has a substantially C-shaped cross section with a lower end portion connected to the side plate 52 (see FIG. 4). A support portion 53a having a substantially inverted C-shaped cross section when viewed from the paper surface direction and an extending portion 53b extending obliquely upward from the upper end of the support portion 53a are provided (see FIG. 4). And the opening part 52a opened widely in the longitudinal direction is formed in the upper vicinity of the site | part of the side plate 52 to which each support part 53a is connected (refer FIG. 5).

As shown in FIG. 6, the rotation member 50 b is formed so as to protrude obliquely upward in the width direction from the plate-like main body portion 54 and one side in the longitudinal direction of the plate-like main portion 54 (counter-operating lever side). The five lock claws 55 are provided. The plate-like main body portion 54 is provided with three elongated holes 54a that are spaced apart from each lock claw 55 on the opposite side in the width direction and are wide open in the longitudinal direction over the entire length in the longitudinal direction. Each elongated hole 54a can be inserted into the extending portion 53b and the supporting portion 53a of the corresponding support piece 53, and the width in the short diameter direction is supported so that the inserted support piece 53 can be relatively rotated. It is formed to be longer than the thickness of the piece 53.

The plate-like main body 54 is provided with a protrusion 54b that protrudes in a square shape in the direction away from the lock claw 55 in the vicinity of each elongated hole 54a, and the width dimension of each protrusion 54b (rail The dimension in the sliding direction) is formed to be slightly narrower than the width dimension of each opening 52a of the side plate 52 (see FIG. 5).

Further, the side (lock claw side) of the plate-like main body 54 that is separated from the long hole 54a on the other side in the longitudinal direction (operation lever side) is formed as an inclined portion 56 that is inclined upward. The inclined portion 56 is formed with a through hole 56a through which one end 57a of a lock spring 57 described later can be inserted.

As shown in FIG. 4, the rotating member 50b configured as described above inserts and engages each elongated hole 54a with the corresponding support piece 53 and inserts each protruding portion 54b into the corresponding opening 52a. Thus, the contact portion between the lower end of each protrusion 54b and the lower edge of each opening 52a, or the contact portion between the upper edge of each elongated hole 54a and each support portion 53a serves as a rotation center L and locks. The bracket 50a is rotatably supported. Since the rotation center L extends in the rail sliding direction, the rotation center L is illustrated in a dotted shape in FIG.

At this time, since the width dimension of each protrusion 54b of the rotation member 50b is formed to be slightly narrower than the width dimension of the corresponding opening 52a, the rotation member 50b is centered on the rotation center L. Even in the case of the rotation, the rotation member 50b does not rattle in the longitudinal direction (rail sliding direction) (see FIG. 5). Moreover, since the rotation member 50b is rotatably supported by each support part 53a formed in the substantially C-shaped cross section of the support piece 53 of the lock bracket 50a in each long hole 54a, the rotation member 50b is It is difficult to remove from the lock bracket 50a.

The lock member 50 configured as described above is configured so that the top plate 51 and the side plate 52 of the lock bracket 50a are in contact with the upper wall 21 and the side wall 22 of the upper rail 20 and the upper and lower circular holes 51a of the top plate 51. Both the two round holes 21 a provided in the wall 21 are fixed to the upper rail 20 by caulking with rivets 25. And the one side edge part 57a of the lock spring 57 formed by bending the metal rod which is an elastic body is penetrated by the through-hole 56a of the rotation member 50b.

As a result, the rotating member 50b causes the lock spring 57 inserted through the one end portion 57a to rotate in the counterclockwise direction in FIG. The upper rail 20 is biased in a direction (lock rotation direction) to be engaged with the

notches

22a and 23a of the upper rail 20 and the corresponding notches 35a of the lower rail 30. The lock spring 57 is fixed to the upper rail 20 by a fixing tool 58 formed by bending a flat plate at the other side end 57b.

FIG. 7 is an enlarged view of the inside of the ellipse along the alternate long and short dash line III shown in FIG. FIG. 8 is an exploded perspective view of the biasing member 60 of FIG.
As shown in FIGS. 7 and 8, the urging member 60 is press-fitted into the connecting body support member 61 fixed to the upper rail 20 and both through holes 61c of the connecting body support member 61 in the rail sliding direction. A shaft 62 fixed at right angles, a connecting body bracket 63 supported by the shaft 62 so as to be tiltable by both through holes 63b, a connecting body 64 fixed to the connecting body bracket 63, and an operation lever 70 A substantially clip-like elastic member 65 that suppresses tilting in a direction opposite to the unlocking tilt direction (anti-unlock tilting direction) that is the tilting direction for unlocking the connecting portion 72 is provided.

The connecting body support member 61 is formed by connecting the upper end portions on the operation lever side of both side plates 61a with a connecting portion 61b. A through hole 61c is formed in the center portion of the both side plates 61a, and cutouts 61d are formed on both sides of the through hole 61c on the operation lever side and the counter operation lever side. When each notch piece 61d is engaged with an engaging portion (not shown) provided on the operation lever side of both side walls 22 of the upper rail 20, the notch piece 61d moves relative to the operation lever side with respect to the both side walls 22 of the coupling body support member 61. It is formed to suppress.

The connecting portion 61b is provided with an elastic pinching portion 61e having a substantially U-shaped cross section that is open on the side opposite to the operation lever. The height of the U-shaped cross section of the elastic pinching portion 61e is above the upper rail 20. It is formed so as to be slightly narrower than the thickness of the wall 21.

The connection body 64 has an end surface 64a and an upper surface 64b on the operation lever side fixed to the connection body bracket 63 by welding or the like. Further, a connecting piece 64c that can abut against the inclined portion 56 of the lock member 50 is formed at one portion of the connecting body 64 on the side opposite to the operation lever (see FIG. 7).

The operating lever 70 includes a gripping portion 71 disposed outside the upper rail 20, a connecting portion 72 extending substantially parallel to each other from both ends of the gripping portion 71, and both connecting portions 72. And a support portion 73 in which a through hole 73a that is connected and can be inserted into the shaft 62 is formed. (See FIGS. 1 and 8).

The assembly of the urging member 60 and the operation lever 70 configured as described above to the upper rail 20 will be described below. First, in a state where the shaft 62 is inserted into both the through holes 63b of the connecting body bracket 63 to which the connecting body 64 is fixed and both the through holes 73a of the support portion 73, the shaft 62 is connected to both the through holes 61c of the connecting body support member 61. Press fit into and fix. As a result, the connecting body 64 and the operation lever 70 are supported by the connecting body support member 61 with the shaft 62 as the tilting center.

Next, as shown in FIG. 7, the U-shaped urging portion 65 a of the elastic member 65 is locked to the connecting portion 72 of the operation lever 70, and both the support portions 65 b of the elastic member 65 are connected to the connecting body support member 61. The urging member 60 is inserted into the upper rail 20 while being sandwiched between the upper surface of the connecting portion 61 b and the lower surface of the upper wall 21 of the upper rail 20. Then, the elastic pinching portion 61 e of the connecting portion 61 b of the connecting body support member 61 is engaged with the upper wall 21, and the notch piece 61 d of the connecting body support member 61 is engaged with the engaging portions of the side walls 22.

Thereby, the biasing member 60 and the operation lever 70 are assembled to the upper rail 20. At this time, the connecting portion 72 of the operation lever 70 is biased by the U-shaped biasing portion 65a of the elastic member 65 so as to suppress tilting in the anti-lock release tilting direction (see FIG. 7). Further, the lower surface of the connecting piece 64c of the connecting body 64 is in contact with the upper surface of the inclined portion 56 of the lock member 50 (see FIG. 7).

FIG. 9A is a cross-sectional view showing a locked state by the lock member 50 at a cut surface corresponding to line 9-9 shown in FIG. 3, and FIG. 9B shows a unlocked state by the lock member 50. It is sectional drawing.
In the seat slide device 10 configured as described above, in a state where the grip portion 71 of the operation lever 70 is not operated, the lock member 50 moves in the lock rotation direction around the rotation center L by the urging force of the lock spring 57. By being urged, each lock claw 55 maintains a state in which it is engaged with any one of the

notches

22a and 23a of the upper rail 20 and each of the notches 35a of the lower rail 30. As a result, the upper rail 20 and the lower rail 30 are locked so as not to move relative to each other (see FIG. 9A).

In such a locked state by the lock member 50, when the grip portion 71 of the operation lever 70 is operated to move upward, the support portion 73 of the operation lever 70 tilts around the shaft 62. When the connecting body bracket 63 is pushed downward by the support portion 73 tilting in this way, the connecting body bracket 63 moves downward on the side opposite to the operation lever around the shaft 62 (unlocking tilting direction). Tilt to.

When the inclined portion 56 of the lock member 50 is urged downward by the connecting piece 64c of the connecting body 64 fixed to the connecting body bracket 63 tilting in this way, the rotating member 50b is centered on the rotation center L. In FIG. 9 (B), it turns clockwise (unlocking turning direction). As a result, the engagement between each lock claw 55 and each

notch

22a, 23a of the upper rail 20 and each notch 35a of the lower rail 30 is released, and the upper rail 20 and the lower rail 30 can be moved relative to each other. It becomes a state.

At this time, the rotation member 50b is formed so that the long hole 54a constituting the rotation center L and the lock claw 55 are separated from each other, and therefore, the long hole 54a and the lock claw 55 are close to each other. In comparison, the amount of downward movement of the inclined portion 56 of the rotating member 50b that moves according to the operation of the operation lever 70 when unlocking is increased.

Further, the rotating member 50b is in a locked state around the rotation center L by the inclined portion 56 formed away from the elongated hole 54a being urged by the connecting piece 64c of the connecting body 64 (FIG. 9A). ))) To the unlocked state (FIG. 9 (B)), the rotation moves in accordance with the operation of the operation lever 70 when the lock is released as compared with the case where the portion near the elongated hole 54a is biased. The downward movement amount of the inclined portion 56 of the moving member 50b increases.

As described above, the amount of downward movement of the inclined portion 56 of the rotating member 50b increases, so that the tilt angle of the connecting body 64 tilting about the shaft 62 when unlocking is increased. As a result, the tilting angle of the support portion 73 tilting about the shaft 62 at the time of unlocking, that is, the upward movement distance of the gripping portion 71 is increased, and a large operation stroke is required for the unlocking operation.

Then, after the relative position between the upper rail 20 and the lower rail 30 is adjusted, when the gripping portion 71 of the operation lever 70 is moved downward so as to return to the original position, the rotating member 50b by the connecting piece 64c of the connecting body 64 is moved. The urging force is released, and the rotation member 50b is rotated in the lock rotation direction about the rotation center L by the urging force of the lock spring 57. Thereby, each lock claw 55 engages with any one of the

notches

22a and 23a of the upper rail 20 and each of the notches 35a of the lower rail 30, so that the upper rail 20 and the lower rail 30 cannot be relatively moved again. (Refer to FIG. 9 (A)).

As described above, in the seat slide device 10 according to the first embodiment, the lock member 50 has the rotation center in which the lock claw 55 of the rotation member 50b extends in the rail sliding direction in accordance with the operation of the operation lever 70. The center of rotation L is provided at a position separated from the lock claw 55.

As described above, since the rotation center L and the lock claw 55 are separated from each other, the operation lever 70 is released when the lock state is released as compared with the case where the rotation center L and the lock claw 55 are close to each other. The downward movement amount of the inclined portion 56 of the lock member 50 that moves in accordance with the tilting of the coupling body 64 by the operation increases. Thereby, the operation stroke in unlocking operation can be enlarged.
Therefore, erroneous operation of the operation lever 70 can be prevented.

Further, in the seat slide device 10 according to the first embodiment, the lock member 50 rotates about the rotation center L, and the rotation claw 55 is formed at a position away from the rotation center L. The member 50b is provided, and the operation lever 70 biases the inclined portion 56, which is a part separated from the rotation center L of the rotation member 50b, downward when switching to the unlocked state.

As described above, when the operation lever 70 is switched to the unlocked state, the inclined portion 56 separated from the rotation center L of the rotation member 50b is moved downward through the connection piece 64c of the connection body 64 in the biasing member 60. Since it is biased, it moves according to the operation of the operation lever 70 when releasing the locked state, compared with the case where the vicinity of the elongated hole 54a, which is the vicinity of the rotation center L of the rotation member 50b, is biased downward. The amount of downward movement of the inclined portion 56 of the rotating member 50b that increases is increased. Thereby, the operation stroke in lock release operation can be enlarged more.
Therefore, erroneous operation of the operation lever 70 can be reliably prevented.

Further, in the seat slide device 10 according to the first embodiment, the lock member 50 includes a lock bracket 50a that rotatably supports the rotation member 50b about the rotation center L, and the rotation member 50b. The three elongated holes 54a are formed at positions separated from the lock claw 55, and the lock bracket 50a can be inserted into the elongated holes 54a. The support pieces 53 that can be rotated relative to each other are formed by the number of the long holes 54a.

As described above, when the long holes 54a formed in the rotating member 50b are inserted into the support pieces 53 formed in the lock bracket 50a corresponding to the long holes 54a, the support pieces 53 are inserted into the long holes 54a. Since it can rotate relative to the elongated hole 54a in the inserted state, the rotating member 50b is rotatably supported by the lock bracket 50a.
Thereby, the rotation member 50b can be rotatably supported by the lock bracket 50a with a simple configuration.

Further, in the seat slide device 10 according to the first embodiment, each support piece 53 is provided with a support portion 53a having a C-shaped cross section, and is inserted into each elongated hole 54a so as to be relatively rotatable at each support portion 53a. The Thereby, since the rotation member 50b is rotatably supported by the support part 53a formed in the cross-section C shape of each support piece 53 of the lock bracket 50a in each long hole 54a, the said rotation member 50b is attached. It can be made difficult to come out of the lock bracket 50a.

Further, in the seat slide device 10 according to the first embodiment, the rotating member 50b has a protruding portion that protrudes in a direction away from the lock claw 55 from each elongated hole 54a that is a portion separated from the lock claw 55. 54b are formed, and the lock bracket 50a can be inserted with the protrusions 54b when the support pieces 53 are inserted into the long holes 54a, respectively, and more than the protrusions 54b in the rail sliding direction. Openings 52a that are slightly wide open are formed by the number of protrusions.

Thereby, when the rotation member 50b rotates about the rotation center L, the movement of the rotation member 50b in the rail sliding direction is limited by the opening 52a. Shaking in the moving direction can be suppressed.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a perspective view showing the lock member 80 of the seat slide device 10 according to the second embodiment of the present invention. FIG. 11 is an exploded perspective view of the lock member 80 according to the second embodiment.
The seat slide device 10 according to the second embodiment employs a lock member 80 having a lock spring 90 instead of the lock member 50 described in the first embodiment, and also eliminates the lock spring 57. Different from the seat slide device according to the first embodiment. Therefore, substantially the same components as those of the seat slide device of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

As shown in FIGS. 10 and 11, the lock member 80 includes a lock bracket 80a and a rotating member 80b, and a lock spring 90 formed by bending a metal rod which is an elastic body. The lock bracket 80a is formed in a substantially L-shaped cross section by a top plate 81 provided with two round holes 81a near both ends in the longitudinal direction and a side plate 82 extending downward from one end of the top plate 81. Yes. Both round holes 81a play the same role as the double round holes 51a described in the first embodiment.

An engagement piece 81b extending substantially parallel to the side plate 82 is provided at the longitudinal center of the other end of the top plate 81, and an opening 81c is formed at the center of the engagement piece 81b. ing. In addition, a hook engaging portion 81d that can engage with one end 91 of the lock spring 90 is formed at one end in the longitudinal direction of the top plate 81 (on the side opposite to the operation lever).

The side plate 82 is provided with two support pieces 83. The two support pieces 83 are inclined from the lower end of the support portion 83a having a substantially C-shaped cross section whose upper end portion is connected to the side plate 82. And an extending portion 83b extending downward. Openings 82a that are wide open in the longitudinal direction are formed in the vicinity of the lower portion of the side plate 82 where the support portions 83a are connected.

The rotation member 80b includes a plate-like main body portion 84 and a lock-side engagement portion formed so as to protrude obliquely upward in the width direction from a longitudinal one side (counter-operating lever side) portion of the plate-like main body portion 84. 85. The plate-like main body portion 84 is provided with two elongated holes 84a that are spaced apart from the lock-side engaging portion 85 on the opposite side in the width direction and are wide open in the longitudinal direction over the entire length in the longitudinal direction. Both the long holes 84a can be inserted into the extending portions 83b and the support portions 83a of the corresponding support pieces 83, and the width in the short diameter direction is supported so that the support pieces 83 in the inserted state can be relatively rotated. It is formed longer than the thickness of the piece 83. Moreover, the width of the long diameter direction of both the long holes 84a is formed longer than the width of the support piece 83 so that the inserted support piece 83 can slide in the longitudinal direction.

The lock side engaging portion 85 is provided with four lock holes 85a that can be engaged with the

notches

22a and 23a of the upper rail 20 and the corresponding notches 35a of the lower rail 30. Each lock hole 85a has the same function as the lock claw 55 described in the first embodiment. Note that, unlike the lock claw 55 in the first embodiment, the lock side engaging portion 85 is configured to engage with a notch 22a or the like of the left side wall 22 as viewed from the operation lever direction.

Also, the plate-like main body 84 is provided with protruding portions 84b that protrude in a square shape in the direction away from the lock-side engaging portion 85 in the vicinity of both the elongated holes 84a. Both protrusions 84b can be inserted into the corresponding opening 82a, and the width in the longitudinal direction is such that the opening 82a can slide in the longitudinal direction with respect to the opening 82a when inserted into the opening 82a. It is formed to be narrower than the width in the longitudinal direction.

Also, a protruding portion 84c protruding from the plate-like main body portion 84 is formed between the protruding portions 84b. The protrusion 84c can be inserted into an opening 82b formed between the openings 82a of the side plate 82, and its longitudinal width is longer than that of the opening 82b when inserted into the opening 82b. It is formed so as to be narrower than the width in the longitudinal direction of the opening 82b so as to be slidable in the direction.

Further, the side (lock side engaging portion side) of the plate-like main body portion 84 that is separated from the long hole 84a on the other side (operation lever side) in the longitudinal direction is formed as an inclined portion 86 that is inclined upward. The plate-like main body portion 84 in the vicinity of the inclined portion 86 is provided with a through hole 86a formed so that the other end portion 92 of the lock spring 90 can be engaged. The inclined portion 86 is a portion that is urged by the connecting piece 64c of the urging member 60 in accordance with the operation of the operation lever 70, similarly to the inclined portion 56 described in the first embodiment.

Also, a locking portion 87 that can be locked to the opening 81c of the lock bracket 80a is formed at the end of the plate-shaped main body portion 84 in the longitudinal center of the lock engaging portion.

The lock bracket 80a, the rotation member 80b, and the lock spring 90 of the lock member 80 configured as described above are assembled as follows.
First, both the long holes 84a are inserted into and engaged with the corresponding support pieces 83, and both the protrusions 84b and the protrusions 84c are inserted into the corresponding

openings

82a and 82b. At this time, the other end portion 92 of the lock spring 90 is inserted into the through hole 86a and locked.

Then, the rotating member 80b on which the lock spring 90 is locked is slid with respect to the lock bracket 80a so that the lock side engaging portion 85 of the rotating member 80b is separated from the hook engaging portion 81d of the lock bracket 80a. . During this sliding, one end 91 of the lock spring 90 is engaged with the hook engaging portion 81d. By this engagement, the lock spring 90 locks the rotation member 80b around the rotation center L with respect to the lock bracket 80a so as to maintain the locked state, similarly to the lock spring 57 of the first embodiment. Energize in the direction of rotation.
Thereby, the lock member 80 shown in FIG. 10 is completed.

The lock member 80 assembled in this manner has the top plate 81 and the side plate 82 of the lock bracket 80a in contact with the upper wall 21 and the side wall 22 of the upper rail 20, and the round holes 81a of the top plate 81. Both the two round holes 21 a provided in the upper wall 21 are fixed to the upper rail 20 by caulking with rivets 25.

At this time, the lock member 90 has already been assembled with a lock spring 90 that urges the rotation member 80b in the lock rotation direction. This eliminates the need to insert the one end 57a of the lock spring 57 into the through hole 56a of the lock member 50 fixed to the upper rail 20 as in the first embodiment. Manufacturing cost can be reduced.

In the seat slide device 10 in which the lock member 80 thus configured is fixed to the upper rail 20, the lock member 80 is rotated by the urging force of the lock spring 90 when the grip 71 of the operation lever 70 is not operated. The lock hole 85a of the lock side engaging portion 85 is urged in the lock rotation direction around the moving center L, so that each of the

notches

22a and 23a of the upper rail 20 and the notches 35a of the lower rail 30 is selected. The state engaged with 4 is maintained. Thereby, the upper rail 20 and the lower rail 30 are locked so that relative movement is impossible.

In such a locked state by the lock member 80, when the gripping portion 71 of the operation lever 70 is operated so as to move upward, the support portion 73 and the connecting body bracket 63 of the operating lever 70 are tilted, and the connecting body The inclined portion 86 of the lock member 80 is urged downward by the 64 connecting pieces 64c. Thereby, the rotation member 80b rotates about the rotation center L, and the engagement between the lock holes 85a and the

notches

22a and 23a of the upper rail 20 and the notches 35a of the lower rail 30 is released. As a result, the upper rail 20 and the lower rail 30 are unlocked so that they can move relative to each other. In the unlocked state, the engaging portion 87 of the rotation member 80b is engaged with the opening 81c of the lock bracket 80a, so that an excessive tensile force or the like acts on the lock spring 90 by the rotation of the rotation member 80b. Can be prevented.

As described above, in the seat slide device 10 according to the second embodiment, the lock member 80 is biased in the lock rotation direction so as to maintain the rotation member 80b in a locked state with respect to the lock bracket 80a. A lock spring 90 is provided.

This eliminates the need to engage a biasing member such as a lock spring with the locking member 80 fixed to the upper rail 20, so that the assembling property can be improved and the manufacturing cost can be reduced.

The present invention is not limited to the above embodiments, and may be embodied as follows. Even in this case, the same operations and effects as those of the above embodiments can be obtained.
(1) The rotation member 50b of the lock member 50 is rotatably supported by the lock bracket 50a around the rotation center L by inserting each elongated hole 54a through the support piece 53 and engaging with each other. Not limited to this, it is only necessary that the rotation center L is pivotally supported by the lock bracket 50 a so as to be separated from the lock claw 55.

(2) Each support piece 53 and each long hole 54a are not limited to three, but may be one or two, or four or more.

(3) The support portion 53a is not limited to be formed in a substantially C-shaped cross section, and may be any shape as long as the long hole 54a inserted through the support portion 53a is difficult to be removed from the support portion 53a.

(4) The number of each protrusion 54b and each opening 52a is not limited to three, but may be one or two, or four or more.

(5) The connecting body bracket 63 and the connecting body 64 of the urging member 60 are not separate bodies, and the connecting body bracket 63 and the connecting body 64 may be integrally formed.

(6) In the first embodiment, the lock spring 57 is eliminated, and the lock member 50b of the lock member 50 is urged in the lock rotation direction about the rotation center L with respect to the lock bracket 50a. An urging member may be provided. Thereby, like the said 2nd Embodiment, the assembly | attachment property of the locking member 50 can improve, and manufacturing cost can be reduced.

10 ... Seat slide device,
20 ... Upper rail (upper rail member), 22a, 23a ... Notch (upper rail side engaged portion),
30 ... Lower rail (lower rail member), 35a ... Notch (lower rail side engaged portion),
DESCRIPTION OF SYMBOLS 50 ... Lock member, 50a ... Lock bracket (support member), 50b ... Turning member, 52a ... Opening part, 53 ... Support piece, 53a ... Support part, 54a ... Elongate hole (through hole), 54b ... Projection part, 55 ... Lock claw (lock side engaging part), 56 ... Inclined part, 56a ... Through hole,
60 ... Biasing member, 61 ... Connector support member, 62 ... Shaft, 63 ... Connector bracket, 63b ... Through hole, 64 ... Connector, 64c ... Connector piece,
70 ... an operation lever (operation member), 71 ... a gripping part, 72 ... a connection part, 73 ... a support part, 73a ... a through hole,
DESCRIPTION OF SYMBOLS 80 ... Lock member, 80a ... Lock bracket (support member), 80b ... Turning member, 81c ... Hook engagement part, 82a, 82b ... Opening part, 83 ... Support piece, 83a ... Support part, 84a ... Elongated hole (penetration) Holes), 84b, 84c ... protruding portions, 85 ... lock side engaging portions, 86 ... inclined portions, 86a ... through holes, 90 ... lock springs (biasing members for locking),
B: Vehicle floor (vehicle body), L: Center of rotation, S: Vehicle seat.

Claims

A lower rail member fixed to the vehicle body;
An upper rail member fixed to the seat and slidably provided with respect to the lower rail member;
A lock member having a lock side engagement portion that can be engaged with and disengaged from the lower rail side engaged portion of the lower rail member and the upper rail side engaged portion of the upper rail member;
An operation member operated to switch between a locked state in which the lock-side engaging portion engages with the lower rail-side engaging portion and the upper rail-side engaging portion and a lock-released state in which the locked state is released;
In a seat slide device comprising:
The lock member is rotated around a rotation center at which the lock-side engagement portion extends in the sliding direction in accordance with an operation of the operation member, and the rotation center is separated from the lock-side engagement portion. A seat slide device, characterized in that it is provided.
The lock member includes a rotation member that rotates about the rotation center and in which the lock-side engagement portion is formed at a position away from the rotation center.
2. The seat slide device according to claim 1, wherein the operation member pushes a portion of the rotation member that is separated from the rotation center when switching to the unlocked state.
The lock member includes a support member that rotatably supports the rotation member around the rotation center;
The rotating member is formed with one or a plurality of through holes at a position separated from the lock side engaging portion,
The support member is formed with the number of support pieces that can be inserted into the through hole and that can rotate relative to the through hole in the inserted state. Seat slide device.
4. The seat slide device according to claim 3, wherein the support piece includes a support portion having a C-shaped cross section, and is inserted into the through hole through the support portion so as to be relatively rotatable.
The rotating member is formed with one or a plurality of protruding portions that protrude in a direction away from the lock-side engagement portion from a portion separated from the lock-side engagement portion,
In the support member, when the support piece is inserted into the through hole, the protrusion can be inserted, and an opening that is slightly wider than the protrusion in the sliding direction is formed in the protrusion. The seat slide device according to claim 3 or 4, wherein the number of the seat slide devices is the same as the number.
6. The lock member according to claim 3, wherein the lock member includes a lock biasing member that biases the rotating member so as to maintain the locked state in the locked state. The seat slide device described.