JP2010149545A - Seat sliding device of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the generation of noise when self-locking. <P>SOLUTION: An upper rail 2 is installed to a lower rail 1. In the upper rail 2, a plate spring 11 rotatably supporting a lock arm 8 locking the upper rail 2 and energizing the rock arm 8 in a locking direction is provided. An input arm 8c for rotating the rock arm 8 in an unlocking direction against the energizing force of the plate spring 11 is formed on the lock arm 8. A handle holder 29 pressing the input arm portion 8c in the unlocking direction is rotatably provided on the upper rail 2. An operation lever 28 is coupled to the handle holder 29, and a pressing portion 29f of the handle holder 29 faces the input arm portion 8c. A sound attenuation spring 30 energizing the input arm portion 8c toward the pressing portion 29f is provided on the handle holder 29. Consequently, the pressing portion 29f of the handle holder 29 is energized to the input arm 8c. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle seat slide device, and is an improvement of a lock mechanism that locks a seat by sliding it forward and backward of a vehicle body.

  In recent automobile seats, diversification of seat layouts is required, and seat slide devices are provided not only on front seats but also on second seats and third seats.

  In a vehicle seat slide device, an upper rail coupled to a lower surface of a seat is slidably assembled to a lower rail fixed to a vehicle floor, and a lock mechanism is provided so that the upper rail can be slid and locked with respect to the lower rail. Is provided.

  The lock mechanism urges a lock arm, which is rotatably attached to the upper rail, by a spring, and locks the lock claw of the lock arm into each lock hole of the upper rail and the lower rail, thereby lowering the lower rail. The upper rail is locked against. And the lock release mechanism which rotates a lock arm against the urging | biasing force of a spring and cancels | releases a lock is provided.

  As a conventional vehicle seat slide device having an unlocking mechanism, a device disclosed in Patent Document 1 is disclosed. A lock arm 8 and a bearing bracket 12 that supports the lock arm 8 are provided inside the upper rail 2. The lock arm 8 is supported so as to be rotatable about a rotation shaft 12b substantially parallel to the length direction of the upper rail 2. An input arm portion 8c for rotating the lock arm 8 in the unlocking direction is formed, and the input arm portion 8c is guided to the outside of the upper rail 2 from one of the slits 2d. A handle holder 29 that presses the input arm portion 8c in the unlocking direction is rotatably provided on the upper rail 2, and an operation lever (not shown) is connected to the handle holder 29, and a pressing portion 29a of the handle holder 29 is connected. Faces the input arm 8c.

  However, when the seat is moved from the unlocked state by manually pulling the control lever upward and the control lever is returned, the tip of the lock claw is displaced from the position of the lock hole of the lower rail, and the lock is not performed. Further, when the seat is moved slightly and the tip of the lock claw coincides with the position of the lock hole of the lower rail, the lock arm may enter the lock hole of the lower rail by the urging force of the spring and be self-locked. At this time, the lock arm is vigorously rotated in the lock direction by the urging force of the spring, and the lock claw collides with the edge of the lock hole to generate a collision sound. This collision sound is high because the lock arm is lightweight, and can be heard as an abnormal sound.

On the other hand, in order to prevent a collision sound from being generated, Patent Document 2 discloses that a release layer for releasing the lock is provided with a coating layer made of resin at the contact portion with the lock lever. It is also conceivable to apply a concept to form a coating layer made of resin on the edge of the lock claw or lock hole.
JP 2007-196870 A Japanese Patent Laid-Open No. 2007-126037

  However, since the lock claw and the edge of the lock hole slide when the lock claw is inserted into and removed from the lock hole, the coating layer is easily worn, and the edge of the lock claw and the lock hole is not covered with the coating layer when moving the seat back and forth. Since the load is applied, the coating layer is easily peeled off.

  Therefore, an object of the present invention is to provide a vehicle seat slide device that solves the above-described problems and suppresses the generation of abnormal noise.

  According to the first aspect of the present invention, an upper rail fixed to a seat is slidably assembled to a lower rail fixed to a vehicle floor, and a lock arm that locks the upper rail with respect to the lower rail is provided inside the upper rail. A first urging means is provided for pivotally supporting a pivot shaft substantially parallel to the length direction of the upper rail and urging the lock arm in the lock direction. An input arm portion for rotating in the unlocking direction against the urging force of the urging means is formed on the lock arm, and the input arm portion is connected to the outside of the upper rail through a slit formed on the upper rail. On the other hand, a handle holder that presses the input arm portion in the unlocking direction is provided rotatably on the upper rail, In a seat slide device in which an operating lever is connected to the handle holder and the pressing portion of the handle holder faces the input arm portion, a second attachment for biasing the pressing portion to the input arm portion is applied to the handle holder. An urging means is provided, and the input arm portion is sandwiched between the pressing portion and the second urging means.

  According to the present invention, since the pressing portion of the handle holder is biased to the input arm portion of the lock arm where the lock claw is formed and the pressing portion of the handle holder is in contact with the lock arm, the self-lock occurs and the collision occurs. The inertia mass of the lock arm, which is a generation source when sound is generated, is a weight obtained by adding the lock arm and the handle holder, and the weight is larger than the conventional one. For this reason, the frequency of the collision sound generated at the time of collision is smaller than that of the conventional one, and the pitch of the collision sound is lowered.

  According to a second aspect of the present invention, in the vehicle seat slide device according to the first aspect, a leaf spring for urging the input arm portion toward the pressing portion of the handle holder as the second urging means. It is provided in the handle holder, and the leaf spring biases the pressing portion of the handle holder toward the input arm portion.

  According to this invention, the leaf spring provided on the handle holder urges the pressing portion of the handle holder toward the input arm portion, and as a result, the pressing portion of the handle holder provided with the leaf spring is attached to the input arm portion. The pressing portion of the handle holder contacts the lock arm.

  According to a third aspect of the present invention, in the vehicle seat slide device according to the first or second aspect, the rotation stroke of the hand holder is such that the pressing portion of the handle holder presses the input arm portion in the unlocking direction. In addition to the pressing stroke for unlocking, a preliminary stroke is provided for allowing the pressing portion of the handle holder to move away from the position where it abuts on the input arm portion in the direction opposite to the unlocking direction. It is characterized by being.

  According to the present invention, when there is a variation in dimensions of the lock arm formed with the lock claw and the position of the input arm portion changes in the direction opposite to the unlocking direction, the handle holder is locked within the range of the preliminary stroke. It is possible to move in the direction opposite to the release direction. Further, when a force in the anti-lock release direction is applied to the handle holder, the force is not applied to the input arm portion because the second urging means is bent.

  According to the vehicle seat slide device of the first aspect, as described above, the pitch of the collision sound of the lock arm at the time of self-locking is not so high that it is lower than the conventional one, so that the uncomfortable feeling is reduced. Further, since the pressing portion of the handle holder is indirectly urged to the input arm portion by the second urging means, the handle holder is moved in the anti-lock releasing direction so that the handle holder in the free state does not vibrate and generates noise. The conventional biasing means that has been biased becomes unnecessary, contributing to cost reduction.

  According to the vehicle seat slide device of the second aspect, since the spring as the second urging means is provided on the handle holder, the configuration for providing the second urging means is simple, and the increase in cost is minimal. Limited.

  According to the vehicle seat slide device of the third aspect, since the handle holder can move in the direction opposite to the unlocking direction within the range of the preliminary stroke as described above, the lock arm having a variation in size can be obtained. Even when there is, it is avoided that the lock arm is slightly pressed in the unlocking direction at the time of locking. Therefore, it is permissible even if the lock arm has dimensional variations.

  Embodiments of a vehicle seat slide device according to the present invention will be described below.

  As shown in FIGS. 1, 5, and 6, the seat slide device includes a lower rail 1 that is fixed to a vehicle floor, and an upper rail 2 that is attached to the left and right positions of the lower surface of the seat. As shown in FIG. 3, the lower rail 1 has a cross-sectional shape formed by extending downwardly bent portions 1 a that are bent inwardly at the upper end of a substantially U-shaped basic cross-section opening at the top. Similarly, an upward bent portion 2a bent outward is formed at the lower end of a substantially inverted U-shaped basic cross-section having an opening at the lower portion. The upper rail 2 is assembled so that the downward bent portion 1a of the lower rail 1 is sandwiched between the upward bent portion 2a and the side wall portion 2b facing the upward bent portion 2a.

  The upper rail 2 is incorporated in the lower rail 1 so as to be slidable in the length direction via guide balls 4 and 5 held by the retainer 3. Specifically, the retainer 3 is assembled in a free state between the lower rail 1 and the upper rail 2, and the guide ball 4 held by the retainer 3 supports the lower surface of the upward bent portion 2a of the upper rail 2, and the guide ball 5 guides the side surface of the upward bent portion 2 a of the upper rail 2. Both ends of the lower rail 1 configured as described above are fixed to the vehicle floor via bolts (not shown). On the other hand, the upper rail 2 is attached to the left and right positions of the lower surface of the seat via bolts 7.

  On the lower surface near the front and rear end portions of the lower rail 1, as shown in FIG. 3, a stopper portion 1 b that sets the movement range of the upper rail 2 is formed by raising the left and right sides of the lower rail 1 upward. On the other hand, in the upper rail 2, the abutting portion 2g that abuts against the stopper portion 1b protrudes downward without bending a part of the lower end of the side wall portion 2b as an upward bending portion 2a. Each is formed. To prevent the retainer 3 from deviating from a predetermined range in the length direction of the upper rail 2 at four positions in the length direction of the left and right upward bent portions 2 a of the upper rail 2, a stopper that is a spherical protrusion is provided. 2h is formed in the vertical position. The guide ball 5 itself comes into contact with the stopper 2h to restrict the movement of the retainer 3. Further, in the vicinity of both ends of the lower rail 1, a retainer 1c for preventing the retainer 3 from coming into contact with the lower rail 1 and preventing the retainer 3 from coming off the lower rail 1 is formed by raising a part of the lower rail 1 downward. ing.

  A lock mechanism 6 for sliding the upper rail 2 along the lower rail 1 and fixing it at an arbitrary position is provided between the lower rail 1 and the upper rail 2 thus configured. The lock mechanism 6 includes a bearing bracket 12, a lock arm 8 rotatably supported by the bearing bracket 12, lock holes 9, 10 and 14 formed in the upper rail 2 and the lower rail 1, and the lock hole 9. , 10, 14 and a leaf spring 11 that always urges the lock claw 8b of the lock arm 8 in the direction of engagement. The upper rail 2 is locked to the lower rail 1 by inserting the lock claw 8 b of the lock arm 8 into the lock holes 9, 10, 14.

  The relationship between the lock arm 8 and the bearing bracket 12 will be described. As shown in FIG. 1, a pair of first slits 2d are formed on the side surface of the upper rail 2 at the front and rear positions of the vehicle body. The first slit 2d is formed from the side wall 2b of the upper rail 2 to the upper wall 2c. On the other hand, a lock arm 8 and a bearing bracket 12 that rotatably supports the lock arm 8 are provided inside the upper rail 2. The lock arm 8 is formed with a pair of arm portions 8e parallel to each other at both ends of the main body portion, and the tip ends of the pair of arm portions 8e are rotatably supported via the bearing bracket 12. That is, a pair of shaft holes 8a are formed in the same straight line at the tip of each arm 8e, while a pair of bearings 12a are formed at both ends of the substantially U-shaped bearing bracket 12. The rotating shaft 12b is formed so as to protrude integrally at the position where the bearing portions 12a are opposed to each other by embossing. In a state where the rotating shaft 12b is fitted in the shaft hole 8a, the distal end portion of the arm portion 8e of the lock arm 8 and the bearing portion 12a of the bearing bracket 12 are connected to the side wall portion 2b of the upper rail 2 and the lock arm 8. As shown in FIG. 2, the rotary shaft 12b is inserted into the first slit 2d from the inside of the upper rail 2 as shown in FIG.

  As shown in FIG. 1, on the circumference of a circle separated from the shaft hole 8a of the lock arm 8 by a predetermined radius and at the lower end of the main body portion of the lock arm 8, there is a gap between the base ends of the pair of arm portions 8e. The four lock claws 8b are formed at the position. Then, since the lock arm 8 is operated from the outside of the upper rail 2 to rotate the lock arm 8 to release the lock, the upper end of the main body portion of the lock arm 8 is positioned between the pair of arm portions 8e. The input arm portion 8c is integrally formed. The input arm portion 8c extends between the pair of arm portions 8e and extends in the radial direction through the position of the axis of the rotating shaft 12b. On the other hand, a second slit 2k is formed between the pair of first slits 2d of the upper rail 2 from the side wall portion 2b to the upper wall portion 2c, and extends from the second slit 2k to the outside of the upper rail 2 as shown in FIG. Thus, the input arm portion 8c protrudes obliquely upward.

  The bearing bracket 12 is configured by assembling three components, and the lock arm 8 and the bearing bracket 12 are attached to the inside of the upper rail 2 as follows. The bearing bracket 12 is configured by combining a pair of bearing members 12c and 12c and a connecting member 12d for connecting them. That is, the pair of bearing members 12c and 12c are fitted with the two protrusions 12e formed in the bearing member 12c into the two holes 12f formed in the connecting member 12d in a state where at least one is press-fitted. Thus, the bearing bracket 12 is constituted by being integrated. The two rivets 13 are inserted into the mounting holes 12g formed in the respective bearing members 12c, the holes 12h formed in the connecting member 12d, and the mounting holes 2e formed in the upper wall portion 2c of the upper rail 2. The bearing bracket 12 is coupled to the lower surface of the upper wall portion 2 c of the upper rail 2 through the two rivets 13.

  In order to urge the lock arm 8 rotatably attached to the inside of the upper rail 2 in the locking direction in this way, a substantially “<”-shaped leaf spring (first urging means) 11 is provided. It has been. The leaf spring 11 has contact portions 11 a at both ends in contact with one inner surface of the side wall portion 2 b of the upper rail 2, and a central bent portion 11 b is in contact with the back surface of the main body portion of the lock arm 8. As shown in FIG. 3, the leaf spring 11 constantly urges the tip of the lock claw 8 b of the lock arm 8 toward the inner surface of the other side wall 2 b of the upper rail 2. A cut-and-raised shaft portion (not shown) is formed on the inner surface of one side wall portion 2b of the upper rail 2 so that the leaf spring 11 does not come off from the upper rail 2, and the cut-and-raised shaft portion is formed on the contact portion 11a on one side. The sliding part 11d is formed by cutting and raising the contact part 11a on the other side while being inserted into the hole 11c, and the sliding part 11d enters a guide groove (not shown) formed on the one side wall part 2b. Yes.

  As shown in FIG. 1, four lock holes 9 and 10 corresponding to the number of the lock claws 8b are respectively provided at corresponding positions in the longitudinal direction of the other side wall 2b and the upward bent portion 2a of the upper rail 2. Is formed. A number of locking holes 14 are formed in the left and right downward bent portions 1a of the lower rail 1 along the length direction. Since these lock holes 9, 10, and 14 are portions into which the lock claw 8b is inserted and engaged when locked, the height positions of these lock holes are substantially the same as shown in FIG. The pitch of these lock holes is the same as the pitch of the lock claws 8b.

  Next, the lock release mechanism 15 for releasing the lock by the lock mechanism 6 will be described. As shown in FIG. 3, a holding bracket 16 is attached to the upper surface of the upper wall portion 2 c of the upper rail 2. The holding bracket 16 includes an upper horizontal portion 16a that protrudes laterally and a fixed vertical portion 16b that extends downward from the upper horizontal portion 16a. As shown in FIG. 1, two mounting holes 16f are formed in the upper horizontal portion 16a, and two projecting portions 16g and 16h projecting downward are formed between the mounting holes 16f. By fitting the projecting portions 16g and 16h into the fitting holes 2i and 2j of the upper rail 2 and fixing them by caulking, the bolts 7 are inserted into the mounting holes 16f of the holding bracket 16 and the mounting holes 2f of the upper rail 2. The holding bracket 16 is attached to the upper rail 2.

  A handle holder 29 is rotatably provided on the fixed vertical portion 16 b of the holding bracket 16. The handle holder 29 includes a rotation vertical portion 29a rotatably attached to the fixed vertical portion 16b via a rotation shaft 18, and a rotation horizontal portion 29b extending horizontally from the rotation vertical portion 29a. Become. The rotating vertical portion 29a is extended rearward of the vehicle body to form a pressing portion 29f for pressing the input arm portion 8c. The rotating horizontal portion 29b is formed with a front upright portion and a rear upright portion that protrude vertically upward, a vertical elongate hole 29c is formed in the front upright portion, and a vertical slit is formed in the rear upright portion. 29d is formed. A single spring 22 formed in a substantially C shape is attached to the front upright portion and the rear upright portion, and an operation lever 28 is inserted into the long hole 29c and the slit 29d. Therefore, a part of the spring 22 biases the operating lever 28 upward in the vicinity of the long hole 29c, and a part of the spring 22 is formed on the upper surface of the tip of the operating lever 28 in the vicinity of the slit 29d. The operation lever 28 is positioned in the length direction and is urged downward. The operation lever 28 is substantially U-shaped, with an intermediate portion positioned in front of the vehicle body and both end portions positioned on the left and right below the seat.

  The configuration in the vicinity of the pressing portion 29f of the handle holder 29 will be described in detail. The handle holder 29 is provided with a silencing spring 30 that is a leaf spring as second urging means for urging the pressing portion 29f toward the unlocking direction, which is a direction in contact with the input arm portion 8c. Yes. The base end portion of the silencer spring 30 is coupled to the upper surface of the rotating horizontal portion 29b via a rivet 30a, and the distal end portion 30b is positioned below the pressing portion 29f. For this reason, the distal end portion 30b of the silencing spring 30 urges the input arm portion 8c upward, whereby the input arm portion 8c is interposed between the pressing portion 29f of the handle holder 29 and the distal end portion 30b of the silencing spring 30. As a result, the pressing portion 29f of the handle holder 29 is urged so as to always come into contact with the input arm portion 8c. That is, the handle holder 29 tends to rotate in the anti-lock release direction due to the weight of the operation lever 28, but the urging force of the silencer spring 30 is larger than the force to rotate in the anti-lock release direction. Therefore, the pressing portion 29f is always in contact with the input arm portion 8c.

When the pressing portion 29f of the handle holder 29 presses the input arm portion 8c in the unlocking direction to release the lock by operating the operation lever 28, in addition to the pressing stroke when the pressing portion 29f moves. A preliminary stroke is provided to allow the pressing portion 29f to move away from the position where it comes into contact with the input arm portion 8c in the direction opposite to the unlocking direction. That is, as shown in FIG. 4, a pressing stroke S2 having the same value as the pressing stroke S1 of the input arm portion 8c is set to the pressing portion 29f of the handle holder 29, and further, the pressing portion 29f of the handle holder 29 is set to the input arm portion. A stopper that allows the handle holder 29 to rotate by the amount of (pressing stroke S2 + preliminary stroke S3 = stroke S4) is provided so that it can be moved by the preliminary stroke S3 from the position abutting on 8c in the anti-lock release direction. That is, in order to allow the pressing portion 29f to rotate only by the stroke S4, as shown in FIG. 1, a fan-shaped stopper hole 29e is formed in the rotating vertical portion 29a of the handle holder 29, and the stopper hole 29e is formed in the stopper hole 29e. A stopper piece 16c formed by cutting and raising the fixed vertical portion 16b of the holding bracket 16 is inserted.
(Function)
Next, the operation of the seat slide device will be described. When the seat is locked at an arbitrary slide position, as shown in FIG. 3, the lock arm 8 receives the urging force of the leaf spring 11 and occupies a state of rotational displacement in the clockwise direction. The lock claw 8b of the lock arm 8 is inserted into three of the lock holes 9 and 10 of the upper rail 2 and the lock hole 14 of the lower rail 1, and the upper rail 2 is in a locked state.

  When the seat is changed from this state to a different position in the front-rear direction, the front portion of the operation lever 28 is pulled upward, and the handle holder 29 is rotated about the rotation shaft 18. Then, the pressing portion 29f located at the rear end portion of the handle holder 29 presses the input arm portion 8c downward, and the lock arm 8 rotates counterclockwise against the urging force of the leaf spring 11, thereby The lock claw 8b of the lock arm 8 is pulled out from the three of the lock holes 9, 10, and 14 to be unlocked, and the upper rail 2 and the seat can be freely slid.

  In this state, the positions of the seat and the upper rail 2 are changed back and forth, and then the operation lever 28 is opened. Then, the lock arm 8 is restored to the original state by the urging force of the leaf spring 11, and the lock claw 8b is again inserted into the lock holes 9, 10, 14 as shown in FIG. The sheet is fixed.

  When the seat is moved from the unlocked state by manually pulling the front part of the operation lever 28 upward and the operation lever 28 is returned, the tip of the lock claw 8b is positioned between the lock holes 14 of the lower rail 1. At this time, the operation lever 28 and the handle holder 29 are rotated in the unlocking direction, and then the sheet is further moved so that the tip of the lock claw 8 b is positioned at the position of the lock hole 14. The lock claw 8b enters the lock hole 14 by the urging force of the leaf spring 11 and is self-locked. At this time, since the lock arm 8 rotates together with the operation lever 28 and the handle holder 29 in the lock direction, the collision sound when the lock claw 8b collides with the edge of the lock hole 9 can be reduced. That is, in the present invention, the input arm portion 8c of the lightweight lock arm 8 is in contact with the pressing portion 29f of the handle holder 29 by the urging force of the silencer spring 30, so that only the lock arm 8 is compared with a single case. The inertial mass increases, and the pitch of the collision sound becomes a soft sound instead of the conventional loud sound.

  According to the present invention, the pressing portion 29f of the handle holder 29 is biased toward the input arm portion 8c of the lock arm 8 in which the lock claw 8b is formed, and the pressing portion 29f of the handle holder 29 contacts the lock arm 8. Therefore, the inertia mass of the lock arm 8 which is a generation source when the self-lock occurs and the collision sound is generated is a weight obtained by adding the lock arm 8 and the handle holder 29, and the weight is larger than the conventional one. For this reason, the frequency of the collision sound generated at the time of collision is smaller than that of the conventional one, and the pitch of the collision sound is lowered.

  And since the pitch of the collision sound of the lock arm 8 at the time of self-locking is lower than the conventional one as described above, the uncomfortable feeling is reduced. In addition, since the pressing portion 29f of the handle holder 29 is indirectly urged to the input arm portion 8c by the second urging means, the handle holder 29 is prevented from vibrating and generating no abnormal noise. The conventional urging means for urging in the anti-lock release direction becomes unnecessary, which contributes to cost reduction.

  According to this invention, the silencing spring 30 provided on the handle holder 29 urges the pressing portion 29f of the handle holder 29 toward the input arm portion 8c, and as a result, the pressing portion of the handle holder 29 provided with the silencing spring. 29f is urged to the input arm portion 8c, and the pressing portion 29f of the handle holder 29 is always in contact with the lock arm 8.

  Since the silencer spring 30 as the second urging means is provided in the handle holder 29, the configuration for providing the second urging means is simple, and the cost increase is minimized.

  According to the present invention, when the lock arm 8 on which the lock claw 8b is formed has a variation in dimensions and the position of the input arm portion 8c changes in the direction opposite to the unlocking direction, the handle holder 29 has a preliminary stroke. It is possible to move in the direction opposite to the unlocking direction within the range. In addition, when a force in the anti-lock release direction is applied to the handle holder 29, the force is not applied to the input arm portion 8c because the muffler spring 30 is bent.

  As described above, since the handle holder 29 can move in the direction opposite to the unlocking direction within the range of the preliminary stroke S3, even when there is the lock arm 8 having a variation in dimensions, the handle holder 29 is locked when locked. It is avoided that the arm 8 is slightly pressed in the unlocking direction. Therefore, even if a variation in dimensions occurs in the lock arm 8, it is allowed.

  In the present embodiment, the silencer spring 30 is provided on the handle holder 29, and the silencer spring 30 biases the input arm portion 8c. As a result, the pressing portion 29f of the handle holder 29 biases the input arm portion 8c. However, it is also possible to provide the holding bracket 16 with a silencing spring that urges the pressing portion 29f of the handle holder 29 directly to the input arm portion 8c. In this case, the spring constant of the silencer spring must be sufficiently smaller than the spring constant of the leaf spring 11 so that the lock arm does not rotate due to the biasing force of the silencer spring 30.

1 is an exploded perspective view of a vehicle seat slide device (embodiment). The perspective view which shows the vicinity of a lock arm (embodiment). Sectional drawing (embodiment). Explanatory drawing which shows the relationship between the press stroke of the press part of a handle holder, and a preliminary | backup stroke (embodiment). 1 is a front view of a vehicle seat slide device (embodiment). 1 is a plan view of a vehicle seat slide device (embodiment).

Explanation of symbols

1 ... Lower rail 2 ... Upper rail 2k ... Second slit (slit)
8 ... lock arm 8c ... input arm 11 ... leaf spring (first biasing means)
12b ... Rotating shaft 28 ... Operating lever 29 ... Handle holder 29f ... Pressing part 30 ... Silent spring (second biasing means / plate spring)
S1, S2 ... Pressing stroke S3 ... Preliminary stroke

Claims (3)

An upper rail fixed to a seat is slidably assembled to a lower rail fixed to the floor of the vehicle, and a lock arm that locks the upper rail with respect to the lower rail is approximately in the length direction of the upper rail inside the upper rail. First urging means is provided that is supported rotatably about a parallel rotation axis and urges the lock arm in the locking direction.
An input arm portion for rotating the lock arm in the unlocking direction against the urging force of the first urging means is formed on the lock arm, and the input arm portion is formed with a slit formed on the upper rail. A handle holder that is guided to the outside of the upper rail via the input arm and that presses the input arm portion in the unlocking direction is rotatably provided on the upper rail, and an operation lever is coupled to the handle holder, and the handle holder is pressed. In the seat slide device in which the part faces the input arm part,
The handle holder is provided with second urging means for urging the pressing portion to the input arm portion, and the input arm portion is sandwiched between the pressing portion and the second urging means. Vehicle seat slide device. The vehicle seat slide device according to claim 1,
A leaf spring for urging the input arm portion toward the pressing portion of the handle holder as the second urging means is provided on the handle holder,
The seat slide device for a vehicle, wherein the leaf spring biases the pressing portion of the handle holder toward the input arm portion. In the vehicle seat slide device according to claim 1 or 2,
In addition to the pressing stroke for the handle holder pressing portion to release the lock by pressing the input arm portion in the unlocking direction, the handle holder pressing portion is applied to the input arm portion. A seat slide device for a vehicle, characterized in that a preliminary stroke is provided for enabling separation from a contact position in a direction opposite to the unlocking direction.

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