WO2009145045A1

WO2009145045A1 - Seat sliding device

Info

Publication number: WO2009145045A1
Application number: PCT/JP2009/058758
Authority: WO
Inventors: 学二木村; 祐輔佐藤; 健介三好; 伸行村井
Original assignee: 株式会社今仙電機製作所
Priority date: 2008-05-29
Filing date: 2009-05-11
Publication date: 2009-12-03
Also published as: CN102046412B; CN102046412A

Abstract

Disclosed is a seat sliding device that prevents the malfunction of operating elements. The device is provided with an energizing element (60) which energizes a locking element (50) in the rotational direction to unlock in response to operation of an operating lever (70), and which energizing element (60) can be tilted, using a shaft (62) as the tilt axis, together with said operating lever (70) in response to operation of the operating lever (70). The shape, mass, etc. of a balancer (64) on the energizing element (60) are adjusted so that the position of the center of gravity of the tilting body, which tilts with operation of the operating lever (70) and comprises the operating lever (70) and the energizing element (60), is brought close to the axis of the shaft (62).

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 reduce the force when unlocking the lock mechanism that occurs in response to the tilting of the operating lever so that it is difficult to unlock. For this purpose, the center of gravity of the tilting body including the operating lever is required. It is necessary to adjust the position so as to be close to the tilt center.

However, since the operation lever as described above is formed so as to abut against the lock lever in order to push the lock lever when locked, the center of gravity of the tilting body is basically unambiguous. Therefore, there is a problem that adjustment is difficult.

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 the seat slide device (10), comprising: an operation member (70) operated to switch between the unlocked state and the unlocked state, the unlocked state An urging member (60) for urging the lock member in the unlocking direction according to an operation of the operation member for switching, and a predetermined tilt center (L) together with the operation member according to an operation of the operation member ) About the center of gravity of the tilting body including the operation member that tilts about the predetermined tilt center by the operation of the operation member and the biasing member. It is a technical feature that the position of the center of gravity of the urging member is adjusted so as to be close to.

According to the first aspect of the present invention, the seat slide device is a biasing member that biases the lock member in the unlocking direction in accordance with the operation of the operation member for switching to the unlocked state, and according to the operation of the operation member. An urging member that can be tilted around a predetermined tilting center is provided together with the operation member. The biasing member is arranged so that the gravity center position of the tilting body including the operation member and the biasing member tilted around the predetermined tilt center by the operation of the operation member is close to the predetermined tilt center. The position of the center of gravity is adjusted.

Thereby, since the gravity center position of the tilting body including the operating member and the biasing member is close to the predetermined tilting center, the force when unlocking the lock mechanism generated according to the tilting of the operating lever is reduced. Can be suppressed.

In addition, since the center of gravity of the tilting body can be adjusted by adjusting the position of the center of gravity of the biasing member, adjustment work for bringing the center of gravity of the tilting body close to the predetermined center of tilting can be easily performed. can do.
Therefore, erroneous operation of the operation member can be prevented.

In the invention of claim 2, the urging member is formed with a contact portion capable of abutting on the operation member tilting in the unlocking direction around the predetermined tilting center from the locked state, and the predetermined state from the locked state. It is formed so as not to come into contact with the operation member that tilts in the anti-lock release direction around the tilt center.

In general, a seat belt fixture is fixed to a vehicle seat in the vicinity of a counter-operation member side of a lower rail member and an upper rail member (hereinafter also referred to as an inner rail member) on the vehicle interior side via a fixing member or the like. Yes. When a strong impact is applied to the vehicle seat on which the passenger wearing the seat belt sits, such as when the vehicle collides, a strong tensile force is generated on the seat belt attachment. While the counter-operation member side of the inner rail member moves upward due to this tensile force, the lower rail member and the upper rail member (hereinafter also referred to as the outer rail member) outside the vehicle do not move.

In the operation member that switches the locked state and the unlocked state by connecting each connecting portion extending from each end of the gripping portion to both the inner rail member and the outer rail member, the inner rail member is counteracted as described above. When only the operation member side moves upward, the inner rail member tilts so that the operation member side moves downward. The operation member connected to the biasing member of the inner rail member tilting in this way tilts in the anti-unlocking direction that is the direction opposite to the unlocking direction, that is, the direction in which the gripping portion is moved downward. Then, the outer rail member side of the gripping part moves upward, that is, in the unlocking direction, and the outer rail member is unlocked against the intention of the passenger.

Therefore, by forming the urging member so as not to contact the operation member that tilts in the anti-lock release direction around the predetermined tilt center from the locked state, only the counter operation member side of the inner rail member is upward. Even if the urging member tilts in the anti-lock release direction by moving, the operation member does not tilt according to this tilting. On the other hand, since the urging member is formed with a contact portion that can contact the operation member that tilts in the unlocking direction around the predetermined tilt center from the locked state, the operation member tilts in the unlocking direction. Can be transmitted to the lock member via the biasing member.
As a result, it is possible to prevent the operation member from malfunctioning such that the outer rail member is unlocked by the impact force described above.

According to a third aspect of the present invention, the biasing member is supported by the first tilting member that tilts about the predetermined tilting center in accordance with the operation of the operating member, and is supported and locked so as to tilt about the predetermined tilting center. A second tilting member capable of biasing the member in the unlocking direction. An engagement hole is formed in one of the first tilt member and the second tilt member, and the other is engaged with the engagement hole so as to be relatively movable in the circumferential direction around the predetermined tilt center. An engaging shaft is formed. Then, when the first tilting member tilts in the unlocking direction from the locked state, the second tilting member tilts in the unlocking direction together with the first tilting member by the contact of the engagement shaft with the inner peripheral surface of the engagement hole. Then, the lock member is biased in the unlocking direction. The center of gravity position of at least one member of the first tilting member and the second tilting member is adjusted so that the center of gravity position of the tilting body is close to the predetermined tilt center.

For this reason, when the first tilting member tilts in the unlocking direction from the locked state by the operation of the operating member, the engagement shaft comes into contact with the inner peripheral surface of the engagement hole, so that the first tilting member is moved according to the tilting of the first tilting member. The two tilting members tilt in the unlocking direction about the predetermined tilting center. Since the lock member is biased in the unlocking direction according to the tilting of the second tilting member, the locked state can be reliably released according to the operation of the operating member.

On the other hand, when only the counter-operation member side of the inner rail member moves upward as described above, the second tilting member that biases the locking member of the inner rail member is anti-locked from the locked state around the predetermined tilt center. Tilt in the release direction. At this time, the engagement shaft moves relative to the engagement hole around the predetermined tilt center without contacting the inner peripheral surface of the engagement hole. For this reason, the first tilting member and the operation member do not tilt according to the tilting of the second tilting member in the anti-lock release direction.
Even in this case, it is possible to prevent the operation member from malfunctioning such that the outer rail member is unlocked by the impact force described above.

In the invention of claim 4, the urging member includes an urging piece that urges the first tilting member in the unlocking direction with an urging force that does not unlock the locking member. Thus, the first tilting member is biased in the unlocking direction by the biasing force that does not unlock the locking member by the biasing piece. It will tilt in the unlocking direction until it comes into contact with the inner peripheral surface. As a result, the engagement shaft is securely in contact with the inner peripheral surface of the engagement hole in the locked state, so that the malfunction of the operation member is prevented and the lock is reliably released according to the unlock operation of the operation member. Can do.

In the invention of claim 5, the operating member and the first tilting member are connected via an elastic member that is elastically deformable between the inner surface of the concave portion formed in one of the two and the outer surface of the convex portion formed in the other. Has been. As a result, the operation member and the first tilting member of both the inner rail member and the outer rail member can be connected while suppressing backlash.

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. It is a detailed perspective view of the balancer bracket of FIG. FIG. 10 (A) is a cross-sectional view showing a locked state by a lock member on a cut surface corresponding to line 10-10 shown in FIG. 3, and FIG. 10 (B) is a cross-sectional view showing a unlocked state by a lock member. It is. It is a perspective view which shows the principal part of the seat slide apparatus which concerns on 2nd Embodiment of this invention. It is a disassembled perspective view of the biasing member of FIG. 13A is a view showing the urging member in the locked state, and FIG. 13B is a view showing the urging member tilted in the anti-lock release direction from the locked state.

[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.
7 and 8, the biasing member 60 is press-fitted into the balancer support member 61 fixed to the upper rail 20 and both through holes 61c of the balancer support member 61 so as to be perpendicular to the rail sliding direction. Locking of the shaft 62 to be fixed, the balancer bracket 63 supported by the shaft 62 so as to be tiltable at both through holes 63b, the balancer 64 fixed to the balancer bracket 63, and the connecting portion 72 of the operation lever 70 And a substantially clip-shaped elastic member 65 that suppresses tilting in a direction opposite to the unlocking tilting direction (anti-unlocking tilting direction) that is the tilting direction for releasing the lock.

The balancer support member 61 is formed by connecting upper end portions on the operation lever side of both side plates 61a by 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. Each notch piece 61d suppresses relative movement of the balancer support member 61 to the operation lever side with respect to the both side walls 22 when engaged with an engagement portion (not shown) provided on the operation lever side of the both side walls 22 of the upper rail 20. It is formed to do.

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.

FIG. 9 is a detailed perspective view of the balancer bracket 63.
As shown in FIG. 9, the balancer bracket 63 includes two side plates 63a each having a through hole 63b formed at the center, and the both side plates 63a extend from the center of the through hole 63b to the lower end on the counter-operating lever side. Are connected by a connecting portion 63c. As will be described later, the connecting portion 63c is formed so as to be able to contact the lower surface of the support portion 73 of the operation lever 70 when the balancer bracket 63 and the operation lever 70 are attached to the shaft 62 and tilted in the unlocking tilt direction. ing.

Further, an extension piece 63d extending toward the upper end side of the other side plate 63a and the counter operation lever side is provided on the counter operation lever side of the upper end portion of the one side plate 63a. As will be described later, the extension piece 63d does not contact the upper surface of the support portion 73 of the operation lever 70 when the balancer bracket 63 and the operation lever 70 are attached to the shaft 62 and tilted in the anti-lock release tilt direction. The two through holes 63b are spaced apart from the counter-operating lever.

The balancer 64 has an end surface 64a and an upper surface 64b on the operation lever side fixed to the side plates 63a and the extension piece 63d of the balancer 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 balancer 64 on the side opposite to the operation lever (see FIG. 7).

The balancer 64 is shaped so that the center of gravity of the tilting body including the operation lever 70 tilting about the shaft 62 and the urging members 60 on both the left and right sides is close to the axis of the shaft 62 by the operation of the operation lever 70. And mass are adjusted. Note that the shape, mass, and the like may be adjusted so that the center of gravity of the tilting body matches the axis of the shaft 62. Further, in the description of the claims, “proximity” includes “match”.

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, the shaft 62 is press-fitted into both through-holes 61c of the balancer support member 61 in a state where the shaft 62 is inserted into both through-holes 63b of the balancer bracket 63 to which the balancer 64 is fixed and both through-holes 73a of the support portion 73. And fix. As a result, the balancer 64 and the operation lever 70 are supported by the balancer 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 the two support portions 65 b of the elastic member 65 are connected to the balancer support member 61. The urging member 60 is inserted into the upper rail 20 while being sandwiched between the upper surface of the portion 61 b and the lower surface of the upper wall 21 of the upper rail 20. Then, the elastic clamping portion 61 e of the connecting portion 61 b of the balancer support member 61 is engaged with the upper wall 21, and the notch piece 61 d of the balancer support member 61 is engaged with the engagement 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 balancer 64 is in contact with the upper surface of the inclined portion 56 of the lock member 50 (see FIG. 7).

FIG. 10A is a cross-sectional view showing a locked state by the lock member 50 at a cut surface corresponding to line 10-10 shown in FIG. 3, and FIG. 10B 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. 10A).

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 portion 63c of the balancer bracket 63 is pushed downward by the support portion 73 tilted in this way, the balancer bracket 63 moves the extension piece 63d downward about the shaft 62 (unlock tilt). Tilt in the direction).

When the inclined portion 56 of the lock member 50 is urged downward by the connecting piece 64c of the balancer 64 fixed to the balancer bracket 63 tilting in this way, the rotation member 50b is centered on the rotation center L as shown in FIG. At (B), turn clockwise (unlock 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 when the inclined portion 56 formed away from the elongated hole 54a is urged by the connecting piece 64c of the balancer 64 (FIG. 10A). ) To the unlocked state (FIG. 10 (B)), the rotation moves in response to the operation of the operation lever 70 when unlocking compared to the case where the portion near the elongated hole 54a is urged. The downward movement amount of the inclined portion 56 of the member 50b is increased.

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 balancer 64 that tilts about the shaft 62 when unlocked 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 balancer 64 is connected to the rotating member 50b by the connecting piece 64c. The urging 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. (See FIG. 10A).

Further, in such a locked state, even if the vehicle collides or the like and the occupant contacts to move the grip 71 of the operation lever 70 in the unlocking tilt direction, the operation lever is released for the following reason. 70 erroneous operations can be prevented. That is, since the gravity center position of the tilting body including the operation lever 70 and the right and left biasing members 60 is close to the axis of the shaft 62, the gravity center position of the tilting body is separated from the tilt center. The force for unlocking the lock member 50 generated in response to the tilting of the operation lever 70 is small. Thereby, since it becomes difficult to release the lock, erroneous operation of the operation lever 70 due to contact contrary to the intention of the passenger is prevented. Further, by increasing the rotation angle of the rotating body 50b necessary for unlocking, a large operation stroke is required for the unlocking operation.

Further, in such a locked state, when a tensile force is generated in the seat belt fixture due to a vehicle collision or the like, an upper rail 20 and a lower rail 30 (hereinafter referred to as an inner side) disposed in the vicinity of the fixture in the vicinity of the vehicle interior. While the counter-operating lever side of the

rails

20 and 30 is moved upward, the upper rail 20 and the lower rail 30 (hereinafter also referred to as outer rails 20 and 30) outside the vehicle are not moved.

As described above, when only the counter-operating lever side of the

inner rails

20 and 30 moves upward, the

inner rails

20 and 30 tilt so that the operating lever side moves downward. At this time, when the support portion 73 of the operation lever 70 and the balancer bracket 63 of the urging member 60 are fixed, the grip portion 71 on the outer rail side is anti-locked when the shaft 62 is tilted about the tilt center. Since the operation lever 70 cannot move in the release direction and maintains the original position (horizontal state), the operation lever 70 moves relative to the inclined

inner rails

20 and 30 in the unlocking direction. The

inner rails

20 and 30 are unlocked against the intention of the person.

In the first embodiment, the extension piece 63d of the balancer bracket 63 that is tiltably supported by the shaft 62 is formed so as not to contact the upper surface of the support portion 73 of the operation lever 70. Even if it tilts in the anti-lock release tilt direction from the locked state, the support portion 73 does not tilt according to this tilt. For this reason, even if the

inner rails

20 and 30 are tilted according to the tensile force generated in the seatbelt fixture as described above, the connecting portion 72 of the operation lever 70 is not tilted in the anti-lock release tilting direction.

As described above, the seat slide device 10 according to the first embodiment is the urging member 60 that urges the lock member 50 in the unlocking rotation direction according to the operation of the operation lever 70, and includes the operation lever. A biasing member 60 that can be tilted about the shaft 62 as a tilt center together with the operation lever 70 is provided. The balancer 64 of the urging member 60 moves the center of gravity of the tilting body including the operation lever 70 and the urging member 60 tilted about the shaft 62 by the operation of the operation lever 70 to the axis of the shaft 62. The shape, mass, etc. are adjusted so that

Thereby, since the gravity center position of the tilting body including the operation lever 70 and the urging member 60 is close to the shaft center of the shaft 62, the force generated when the lock member 50 is unlocked according to the tilt of the operation lever 70 is released. Therefore, the lock member 50 is not easily unlocked, and erroneous operation of the operation lever 70 can be suppressed.

In addition, since the center of gravity of the tilting body can be adjusted by adjusting the position of the center of gravity of the balancer 64, adjustment work for bringing the center of gravity of the tilting body close to the axis of the shaft 62 is easily performed. be able to.
Therefore, erroneous operation of the operation lever 70 can be prevented.

In the seat slide device 10 according to the first embodiment, the balancer bracket 63 of the urging member 60 contacts the support portion 73 of the operation lever 70 that tilts in the unlocking tilt direction around the shaft 62 from the locked state. A possible connecting portion 63c is formed. Further, the extending piece 63d of the balancer bracket 63 does not come into contact with the support portion 73 of the operation 70 tilting in the anti-lock release tilting direction around the shaft 62 from the locked state. It is formed to be spaced apart.

Thereby, even if the urging member 60 of the

inner rails

20 and 30 is tilted in the anti-lock release tilt direction from the locked state in accordance with the tensile force generated in the seat belt mounting tool as described above, the support portion 73 is tilted. There is nothing. On the other hand, the balancer bracket 63 of the urging member 60 is formed with a connecting portion 63c that can contact the support portion 73 that tilts in the unlocking tilt direction, so that the operation lever 70 tilts in the unlocking tilt direction. It can be transmitted to the lock member 50 via the urging member 60.
Thereby, it is possible to prevent the operation lever 70 from malfunctioning such that the

outer rails

20 and 30 are unlocked by the impact force described above.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS. FIG. 11 is a perspective view showing a main part of the seat slide device 10 according to the second embodiment of the present invention. FIG. 12 is an exploded perspective view of the urging member 80 of FIG. FIG. 13A is a view showing the urging member 80 in the locked state, and FIG. 13B is a view showing the urging member 80 tilted in the anti-lock release direction from the locked state. FIGS. 13A and 13B show only a part of the balancer 84 with a two-dot chain line and a balancer support member 81 in cross section in order to explain the tilting state of the tilting member 83.

The seat slide device 10 according to the second embodiment is different from the first embodiment in that the biasing member 80 and the operation lever 90 are used instead of the biasing member 60 and the operation lever 70 described in the first embodiment. Different from the seat slide device according to the embodiment. Accordingly, substantially the same components as those in the seat slide device of the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

As shown in FIGS. 11 and 12, the biasing member 80 is press-fitted into the balancer support member 81 fixed to the upper rail 20 and both through holes 81c of the balancer support member 81 so as to be perpendicular to the rail sliding direction. The first shaft 82 to be fixed, the tilting member 83 and the two

balancers

84 and 85 supported so as to be able to tilt relative to the first shaft 82, and the second shaft 86 fitted into the through

holes

84b and 85b of both balancers. And a spring 87.

The balancer support member 81 is formed by connecting the upper ends of both side plates 81a with two connecting portions 81b. A through hole 81c is formed in the center portion of the both side plates 81a, and cutouts 81d are formed on both sides of the through hole 81c on the operation lever side and the counter operation lever side. Each notch piece 81d is formed so as to engage with a not-shown engaging portion provided on the operation lever side of the side walls 22 by assembling the balancer support member 81 so as to push up the upper rail 20 from below. ing. Further, a biasing piece 81e is provided in the center of the coupling portion 81b on the counter-operating lever side, and is inclined downward on the counter-operating lever side.

The tilting member 83 is supported so as to be able to tilt relative to the first shaft 82 by a through hole 83a formed in the center. The tilting member 83 is provided with a long hole 83b formed long in the vertical direction on the side opposite to the operation lever of the through hole 83a. A second shaft 86 is engaged with the elongated hole 83b so as to be relatively movable in the vertical direction with respect to the elongated hole 83b. The short diameter of the long hole 83b is set to be larger than the outer diameter of the second shaft 86.

Further, the operating lever side of the tilting member 83 constitutes a connecting portion 83c that protrudes upward and is connected to the operating lever 90, and a third shaft 88 is formed in the vicinity of the tip of the connecting portion 83c. A penetrating through hole 83d is formed.

Two through

holes

84a and 84b are formed in the balancer 84, and the balancer 84 is supported by the first shaft 82 through the through hole 84a on the operation lever side so as to be capable of relative tilting. In addition, one end portion of the second shaft 86 that is engaged with the elongated hole 83b so as to be relatively movable is inserted into the through hole 84b, and is fixed so as not to be relatively movable. A connecting piece 84c that can come into contact with the inclined portion 56 of the lock member 50 is formed at one portion of the balancer 84 on the side opposite to the operation lever.

The balancer 85 is formed with two through-

holes

85a and 85b, and the balancer 85 is supported by the first shaft 82 through the through-hole 85a on the operation lever side so as to be relatively tiltable. Further, the other end portion of the second shaft 86 that engages with the elongated hole 83b so as to be relatively movable is inserted into the through hole 85b, and is fixed so as not to be relatively movable.

In both

balancers

84 and 85, the center of gravity of the tilting body including the operation lever 90 that tilts about the first shaft 82 and the urging members 80 on both the left and right sides by the operation of the operation lever 90 is close to the axis of the first shaft 82. As such, the shape, mass, and the like are adjusted. Note that the shape, mass, and the like of the tilting body may be adjusted so that the position of the center of gravity of the tilting body matches the axis of the first shaft 82.

The spring 87 is formed by bending a plate-like elastic member into a U shape. The spring 87 is interposed between the outer surface of the connecting portion 83c of the tilting member 83 and the inner surface of the concave portion 93a of the support portion 93 of the operation lever 90, whereby both the operation lever 90 and the inner and outer rails are interposed. It plays a role of connecting with the tilting member 83 while suppressing rattling.

The operating lever 90 includes a gripping portion 91 disposed outside the upper rail 20, a connecting portion 92 extending substantially parallel to each other from both ends of the gripping portion 91, both connecting portions 92, and an attachment. And a support portion 93 connected to both of the tilting members 83 of the biasing member 80.

At the end of the support portion 93, a recess portion 93a into which a connecting portion 83c with a spring 87 fitted on the outer surface can be fitted is formed, and a through hole 93b into which the third shaft 88 can be inserted is formed.

The assembly of the urging member 80 and the operation lever 90 configured as described above to the upper rail 20 will be described below. First, the first shaft 82 is inserted into the through hole 83a of the tilting member 83 and the through

holes

84a and 85a of both

balancers

84 and 85, and is engaged with the elongated hole 83b of the tilting member 83 so as to be relatively movable in the vertical direction. The one end and the other end of the second shaft 86 are inserted into the through

holes

84b and 85b of the

balancers

84 and 85, respectively. Thus, the first shaft 82 into which the tilting member 83 and the

balancers

84 and 85 are inserted so as to be relatively tiltable is press-fitted into the through holes 81c of the balancer support member 81 and fixed.

Next, after the spring 87 is fitted to the outer surface of the connecting portion 83 c of the tilting member 83, the spring 87 and the connecting portion 83 c are fitted into the recess 93 a of the support portion 93. As a result, the spring 87 is interposed between the inner surface of the concave portion 93 a of the support portion 93 and the outer surface of the connecting portion 83 c of the tilting member 83. Then, by inserting the third shaft 88 into the through hole 93b and the through hole 83d, the tilting member 83, both the

balancers

84 and 85, and the operation lever 90 are supported by the balancer support member 81 with the first shaft 82 as the tilt center. The Rukoto.

Then, the urging member 80 and the operation lever 90 are assembled to the upper rail 20 by engaging the notch pieces 81d of the balancer support member 81 with the engaging portions of the both side walls 22 of the upper rail 20.

At this time, the biasing piece 81e of the balancer support member 81 abuts against the upper end of the tilting member 83 on the counter-operating lever side, so that the tilting member 83 is substantially downward (unlocked tilting about the second shaft 86). Direction). For this reason, the tilting member 83 is urged by the urging piece 81 e so that the inner peripheral surface of the upper portion of the elongated hole 83 b comes into contact with the second shaft 86.

In the seat slide device 10 configured as described above, in a state where the grip portion 91 of the operation lever 90 is not operated, the lock member 50 is pivoted by the urging force of the lock spring 57 as in the first embodiment. The lock claw 55 is biased in the lock rotation direction around L, and the state in which each lock claw 55 is engaged with any one of the

notches

22a and 23a of the upper rail 20 and the notches 35a of the lower rail 30 is maintained. To do. 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 50, when the grip 91 of the operation lever 90 is operated to move upward, the support 93 and the tilting member 83 are unlocked about the first shaft 82. Tilt to. At this time, as shown in FIG. 13A, the second shaft 86 that is in contact with the inner peripheral surface of the elongated hole 83b of the tilting member 83 moves substantially downward in accordance with the tilting of the tilting member 83. Due to the movement of the second shaft 86, the

balancers

84 and 85 in which the one end and the other end of the second shaft 86 are inserted into the through

holes

84 b and 85 b are tilted to release the lock around the first shaft 82. Tilt in the direction.

When the inclined portion 56 of the lock member 50 is urged downward by the connecting piece 84c of the balancer 84 tilting in this way, the rotation member 50b rotates about the rotation center L in the unlocking rotation direction. . As a result, the engagement between each lock claw 55 and each

notch

Then, after adjusting the relative position between the upper rail 20 and the lower rail 30 and moving the grip portion 91 of the operation lever 90 downward so as to return to the original position, the balancer 84 is connected to the rotating member 50b by the connecting piece 84c. The urging 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. Locked to.

Further, as described in the first embodiment, when only the counter-operating lever side of the

inner rails

20 and 30 moves upward due to a vehicle collision or the like, the

inner rails

20 and 30 have the operating lever side down. Tilt to move in the direction. At this time, in the second embodiment, the balancer 84 that biases the lock member 50 is tilted relative to the tilt member 83 in the anti-lock release tilt direction relative to the first shaft 82. At this time, the second shaft 86 whose one end is fixed to the balancer 84 moves relative to the elongated hole 83b around the first shaft 82 without contacting the inner peripheral surface of the elongated hole 83b (see FIG. 13 (B) IV). For this reason, the tilting member 83 and the operation lever 90 do not tilt according to the tilting of the balancer 84 in the anti-lock release tilting direction. As a result, even if the

inner rails

20 and 30 are tilted in accordance with the tensile force generated in the seatbelt fixture as described above, the connecting portion 92 of the operation lever 90 is not tilted in the anti-lock release tilting direction.

As described above, in the seat slide device 10 according to the second embodiment, the urging member 80 includes the tilting member 83 that tilts about the first shaft 82 according to the operation of the operation lever 90, and the first shaft. And a balancer 84 supported so as to be tiltable about 82 and capable of urging the lock member 50 in the unlocking direction. The tilting member 83 is formed with a long hole 83b that is long in the vertical direction, and the balancer 84 is engaged with the long hole 83b so as to be relatively movable in the circumferential direction around the first shaft 82. Two shafts 86 are fixed. When the tilting member 83 tilts in the unlocking direction from the locked state, the balancer 84 tilts in the unlocking direction together with the tilting member 83 by the second shaft 86 coming into contact with the inner peripheral surface of the upper portion of the elongated hole 83b. Thus, the lock member 50 is biased in the unlocking direction. Further, the gravity center positions of the balancer 84 and the balancer 85 are adjusted so that the gravity center position of the tilting body including the operation lever 90 and the biasing member 80 is brought close to the axis of the first shaft 82.

Therefore, when the tilting member 83 tilts in the unlocking direction from the locked state by the operation of the operation lever 90, the second shaft 86 comes into contact with the inner peripheral surface of the upper portion of the elongated hole 83b, and accordingly the tilting member 83 responds to the tilting. Thus, the balancer 84 tilts in the unlocking direction about the first shaft 82. Since the lock member 50 is biased in the unlocking direction according to the tilt of the balancer 84, the locked state can be reliably released according to the operation of the operation lever 90.

On the other hand, when only the counter-operating lever side of the

inner rails

20, 30 moves upward as described above, the balancer 84 that urges the lock member 50 of the

inner rails

20, 30 moves from the locked state around the first shaft 82. Tilt in the anti-lock release direction. At this time, the second shaft 86 fixed to the balancer 84 moves relative to the elongated hole 83b around the first shaft 82 without contacting the inner peripheral surface of the elongated hole 83b. For this reason, the tilting member 83 and the operation lever 90 do not tilt according to the tilt of the balancer 84 in the anti-lock release direction.
Even in this case, it is possible to prevent malfunction of the operation lever 90 such that the

outer rails

20 and 30 are unlocked by the impact force described above.

In the seat slide device 10 according to the second embodiment, the urging member 80 includes the urging piece 81e that urges the tilting member 83 in the unlocking direction with an urging force that does not unlock the lock member 50. I have. In this manner, the tilting member 83 is biased in the unlocking direction by the biasing force that does not unlock the lock member 50 by the biasing piece 81e, so that the second shaft 86 has the elongated hole 83b. It will tilt in the unlocking direction until it comes into contact with the inner peripheral surface of the. As a result, the second shaft 86 is securely in contact with the inner peripheral surface of the elongated hole 83b in the locked state, so that the malfunction of the operating lever 90 is prevented and the second lever 86 is securely locked according to the unlocking operation of the operating lever 90. It can be canceled.

Further, in the seat slide device 10 according to the second embodiment, the operation lever 90 and the tilting member 83 are interposed between the inner surface of the concave portion 93a of the support portion 93 and the spring 87 that can be elastically deformed between the outer surface of the connecting portion 83c. Are connected. As a result, the operation lever 90 and the tilting members 83 of both the inner rail and the outer rail can be coupled while suppressing rattling.

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 balancer bracket 63 and the balancer 64 of the urging member 60 are not separate bodies, and the balancer bracket 63 and the balancer 64 may be integrally formed.

(2) The balancer bracket 63 may be affixed to the end surface 64a of the balancer 64 by welding or the like with the both side plates 63a being omitted from the extension piece 63d.

(3) The rotation member 50b of the lock member 50 is rotatably supported by the lock bracket 50a about 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.

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

(5) 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.

(6) The number of protrusions 54b and the number of openings 52a is not limited to three, but may be one or two, or four or more.

(7) In the second embodiment, the

balancers

84 and 85 for adjusting the position of the center of gravity of the tilting body described above adopt only one balancer, for example, the balancer 84, and set the position of the center of gravity of the tilting body. It may be adjusted, or three or more balancers may be employed to adjust the position of the center of gravity of the tilting body. Further, the position of the center of gravity of the tilting member may be adjusted by adjusting the position of the center of gravity of the tilting member 83.

(8) In the second embodiment, the long hole 83b of the tilting member 83 is inserted into the second shaft 86 and changed to a through hole that cannot be relatively moved, and the through

holes

84b and 85b of the

balancers

84 and 85 are changed to the first one. You may change into the long hole which 2 shaft 86 engages so that a relative movement is possible to an up-down direction. In this case, in the locked state, the second shaft 86 comes into contact with the inner peripheral surface of the lower part of the elongated holes of both the

balancers

84 and 85.

(9) In the second embodiment, the elongated hole 83b of the tilting member 83 is not limited to be elongated in the vertical direction, and the second shaft 86 is relatively movable in the circumferential direction around the first shaft 82. It may be formed in any shape.

(10) In the second embodiment, the tilting member 83 and the support portion 93 of the operation lever 90 are not limited to being connected via the spring 87 between the outer surface of the connecting portion 83c and the inner surface of the concave portion 93a. First, a concave portion is formed on the operation lever side portion of the tilting member 83 and a convex portion is formed on the tilting member side of the support portion 93, and a spring 87 is interposed between the inner surface of the concave portion and the outer surface of the convex portion. May be. Even in this case, the operation lever 90 and the tilting members 83 of both the inner rail and the outer rail can be coupled while suppressing backlash.

(11) In the second embodiment, the spring 87 is not limited to being formed by bending a plate-like elastic member into a U shape, and the outer surface of the connecting portion 83c of the tilting member 83 and the support portion of the operation lever 90. Any shape can be used as long as it can be interposed between the inner surface of the concave portion 93 a of 93.

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, 50b ... Rotating member, 52a ... Opening part, 53 ... Support piece, 53a ... Support part, 54a ... Long hole, 54b ... Projection part, 55 ... Lock claw (lock side engagement) Part), 56 ... inclined part, 56a ... through hole,
60 ... biasing member, 61 ... balancer support member, 62 ... shaft, 63 ... balancer bracket, 63a ... side plate, 63b ... through hole, 63c ... connecting part, 63d ... extension piece, 64 ... balancer, 64c ... connecting 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 ... Biasing member, 82 ... 1st shaft, 83 ... Tilt member (1st tilt member), 83b ... Long hole (engagement hole), 84 ... Balancer (2nd tilt member), 85 ... Balancer, 86 ... 1st 2 shafts (engagement shaft),
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:
A biasing member that biases the lock member in the unlocking direction according to an operation of the operation member for switching to the unlocked state, and a predetermined tilt center together with the operation member according to the operation of the operation member With a biasing member that can tilt around
The gravity center position of the biasing member is set so that the gravity center position of the tilting body including the operation member and the biasing member that tilts around the predetermined tilt center by the operation of the operation member is close to the predetermined tilt center. A seat slide device that is adjusted.
The urging member is formed with a contact portion that can contact the operation member that tilts in the unlocking direction around the predetermined tilt center from the locked state, and the predetermined tilt center from the locked state. The seat slide device according to claim 1, wherein the seat slide device is formed so as not to contact the operation member that tilts in an anti-lock release direction with respect to the center.
The biasing member is supported by the first tilting member tilting about the predetermined tilting center in response to an operation of the operation member, and tiltable about the predetermined tilting center to lock the lock member. A second tilting member that can be biased in the release direction,
An engagement hole is formed in one of the first tilting member and the second tilting member, and the other is engaged with the engagement hole so as to be relatively movable in the circumferential direction around the predetermined tilting center. An engaging shaft is formed,
When the first tilting member tilts in the unlocking direction from the locked state, the second tilting member is brought together with the first tilting member by contacting the engagement shaft with the inner peripheral surface of the engagement hole. Tilt in the unlocking direction to urge the lock member in the unlocking direction,
2. The center of gravity of at least one member of the first tilting member and the second tilting member is adjusted so that the center of gravity of the tilting body is close to the predetermined tilting center. Seat slide device.
The seat according to claim 3, wherein the biasing member includes a biasing piece that biases the first tilting member in the unlocking direction with a biasing force that does not unlock the lock member. Slide device.
The operation member and the first tilting member are connected via an elastic member that can be elastically deformed between an inner surface of a concave portion formed in one of them and an outer surface of a convex portion formed in the other. The seat slide device according to claim 3 or 4.