JP2016165952A - Vehicular seat sliding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular seat sliding device having more excellent installation performance.SOLUTION: A seat sliding device 10 includes: an upper rail 6 for supporting a seat on the upper side; a lower rail 5 for supporting the upper rail relatively movably; and a lock member 22 supported by the upper rail 6 and rotating about a rotating axis L in the extending direction of the upper rail 6 so as to engage with/disengage from an engagement portion of the lower rail 5. While the lock member is nipped between a support portion 38 formed on the upper rail 6 and a support bracket 40 fixed to the upper rail 6, a first rotation fulcrum P1 of the lock member is supported by the support portion 38 formed on the upper rail 6 and a second rotation fulcrum P2 of the lock member is supported by the support bracket 40 fixed to the upper rail 6.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a vehicle seat slide device.

  Usually, a vehicle seat slide device includes an upper rail that supports a seat upward, a lower rail that supports the upper rail so as to be relatively movable along the extending direction, a lock mechanism that restricts the relative movement of the upper rail with respect to the lower rail, It has. For example, the seat slide device described in Patent Document 1 includes a lock member that is supported by the upper rail and that is engaged with and disengaged from the engaging portion of the lower rail by rotating around a rotation axis along the extending direction of the upper rail. I have. Thus, by adopting a configuration in which the engaging portion of the lock member moves in the rail width direction, it is possible to suppress the notch of the upper rail necessary for the locking and unlocking operations to be small. And thereby, high rigidity can be ensured.

  In the seat slide device of the conventional example, the lock member includes first and second rotation fulcrums that constitute axial end portions of the rotation shaft and are arranged with a distance therebetween in the longitudinal direction. It is supported by the upper rail while being sandwiched between the second support brackets (lock brackets). In the seat slide device, the first and second support brackets are fastened together with the upper rail, thereby improving the efficiency of the assembling work.

Japanese Patent Laid-Open No. 2007-126037

  However, in a vehicle, every component is constantly being improved. Also, for the seat slide device, it cannot be said that the above-described conventional technique is a complete form, and therefore, creation of a new technique that can further improve the assembling property has been desired.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle seat slide device that is more excellent in assembling.

  A vehicle seat slide device that solves the above problems includes an upper rail that supports a seat upward, a lower rail that supports the upper rail so as to be relatively movable, and a pivot shaft that is supported by the upper rail and extends in the extending direction of the upper rail. A locking member that engages and disengages with respect to the engaging portion of the lower rail by rotating around, and the locking member includes a support portion formed on the upper rail and a support bracket fixed to the upper rail. The first rotation fulcrum is supported by a support portion formed on the upper rail and the second rotation fulcrum is supported by the support bracket fixed to the upper rail while being sandwiched therebetween. Is preferred.

  According to the above configuration, the lock member can be stably supported on the upper rail with a simpler configuration. As a result, it is possible to achieve excellent assembly while ensuring high reliability.

The vehicle seat slide device that solves the above-described problem preferably includes a position adjustment mechanism that can adjust a fixing position of the support bracket in the extending direction of the upper rail.
According to the above configuration, the lock member can be easily sandwiched between the support portion on the upper rail side and the support bracket fixed to the upper rail in the extending direction of the upper rail where the rotation shaft is formed. As a result, better assemblability can be ensured.

  In the vehicle seat slide device that solves the above-described problem, the upper rail includes a side wall portion that extends in the vertical direction, and a folded portion that is folded upward from a lower end of the side wall portion. A hole passing through the side wall and the folded portion is formed, and the support portion on the upper rail side is formed across the side end surface of the side wall facing the hole and the side end surface of the folded portion. It is preferable.

  According to the said structure, the rotation fulcrum of the lock member can be supported by the aspect in which a rotating shaft is formed between the side wall part which comprises an upper rail, and a folding | turning part. Thus, the lock member can be stably supported on the upper rail with a simple configuration.

In the vehicle seat slide device that solves the above-described problem, it is preferable that a curved convex surface formed on the lock member constitutes the rotation fulcrum.
According to the above configuration, the configuration can be further simplified. Thereby, it is possible to ensure better assembling properties.

  According to the present invention, it is possible to ensure better assembling properties.

The side view which shows schematic structure of the vehicle seat and a seat slide apparatus. The perspective view of a seat slide apparatus. (A) is a top view of a seat slide device, (b) is a side view of a seat slide device. FIG. 3 is an exploded perspective view of the seat slide device according to the first embodiment. Sectional drawing (VV cross section in FIG. 3) of the seat slide apparatus in 1st Embodiment. The perspective view of a locking member. (A) is a side view of the lock mechanism in the first embodiment, and (b) is a bottom view of the upper rail and the lock mechanism in the first embodiment. Sectional drawing of the seat slide apparatus in 1st Embodiment (VIII-VIII cross section in FIG. 3). Sectional drawing of the seat slide apparatus in 1st Embodiment (IX-IX cross section in Fig.3 (a)). The bottom view of the upper rail and lock mechanism in the vicinity of a lock member. Sectional drawing of the seat slide apparatus in 1st Embodiment (XI-XI cross section in FIG.3 (b)). (A) is a top view of a support bracket, (b) is a side view of a support bracket, (c) is a front view of a support bracket. (A) is a front view of the support part formed in the upper rail, (b) is sectional drawing of the support part formed in the upper rail (XI-XI cross section in FIG.3 (b)). Sectional drawing which shows the fixing structure of the support bracket with respect to an upper rail (IX-IX cross section in Fig.3 (a)). Sectional drawing of the seat slide apparatus in 1st Embodiment (XV-XV cross section in FIG. 3). Sectional drawing of the seat slide apparatus in 1st Embodiment (XVI-XVI cross section in FIG. 3). The perspective view of the spring member in 1st Embodiment. (A) is a perspective view which shows the engagement hole of the spring member formed in the upper rail, (b) is a perspective view of the engagement hole vicinity where the spring member was assembled | attached. The perspective view of the locking member and support bracket in 2nd Embodiment. Sectional drawing of the seat slide apparatus in 2nd Embodiment (XI-XI cross section in FIG.3 (b)). The perspective view which shows the protrusion of the support part bracket inserted in the slot-shaped hole part formed in the upper rail, and the said hole part. Sectional drawing which shows the fixing structure of the support bracket with respect to the upper rail in 2nd Embodiment.

[First Embodiment]
Hereinafter, a first embodiment relating to a vehicle seat slide device will be described with reference to the drawings.
As shown in FIG. 1, the vehicle seat 1 includes a seat cushion 2 and a seat back 3 provided so as to be tiltable with respect to a rear end portion of the seat cushion 2. As shown in FIGS. 1 and 2, the vehicle floor portion 4 is provided with a pair of left and right lower rails 5 extending in the vehicle front-rear direction. FIG. 2 shows one side. Further, each of the lower rails 5 is provided with an upper rail 6 that can be relatively moved on the lower rail 5 along the extending direction. The seat 1 is supported above the upper rails 6.

  That is, in the present embodiment, the seat slide device 10 is formed by the lower rail 5 and the upper rail 6. By using the function of the seat slide device 10, the position of the seat 1 in the vehicle front-rear direction can be adjusted.

  More specifically, as shown in FIGS. 3A, 3B, 4 and 5, the lower rail 5 is a flat bottom wall portion 11 serving as a fixed portion to the vehicle floor portion 4 (see FIG. 1). It has. In addition, outer wall portions 12 are provided upright at both ends in the width direction of the bottom wall portion 11 (left and right direction in FIG. 5). Furthermore, a flange-shaped upper wall portion 13 is formed at the upper end (the upper end portion in FIG. 5) of each outer wall portion 12 so as to extend inward in the width direction. An inner wall portion 14 is formed at the tip of each upper wall portion 13 so as to be folded back downward.

  On the other hand, the upper rail 6 includes a pair of side wall portions 15 that face each other in the width direction. Further, the upper rail 6 includes a plate-like upper wall portion 16 that connects the both side wall portions 15. The upper rail 6 of the present embodiment is configured such that the upper rail body 17 having a substantially U-shaped cross section formed by the both side wall portions 15 and the upper wall portion 16 is disposed between the inner wall portions 14 on the lower rail 5 side. It is mounted on the lower rail 5.

  Further, the upper rail 6 of the present embodiment includes a folded portion 18 that is folded from the lower end of each side wall portion 15 toward the outside in the width direction. The folded portion 18 is disposed in a space surrounded by the outer wall portion 12, the upper wall portion 13 and the inner wall portion 14 constituting the lower rail 5, so that the relative movement in the upward direction and the width direction with respect to the lower rail 5 is achieved. Are now regulated.

  In the present embodiment, a ball-shaped rolling element 19 held by a retainer (not shown) is interposed between the outer wall portion 12 of the lower rail 5 and the folded portion 18 of the upper rail 6 that face each other in the width direction as described above. Has been. In the present embodiment, these rolling elements roll in contact with the outer wall portion 12 of the lower rail 5 and the folded portion 18 of the upper rail 6 to ensure smooth relative movement of the upper rail 6 with respect to the lower rail 5. Yes.

  As shown in FIG. 6, the seat slide device 10 according to the present embodiment includes a lock member 22 having a plurality of engaging claws 21 arranged in a comb shape. In the seat slide device 10 of the present embodiment, the lock member 22 is formed by plastic processing a metal plate material. As shown in FIGS. 4, 6, and 7, the lock member 22 is supported by the upper rail 6 so as to be rotatable around the rotation axis L along the extending direction of the upper rail 6.

  On the other hand, as shown in FIG. 4, a plurality of engagement holes 23 arranged in a line along the extending direction of the lower rail 5 are formed in the inner wall portion 14 of the lower rail 5. Further, the lock member 22 of the present embodiment is configured so that the respective engagement claws 21 are engaged with and disengaged from the respective engagement holes 23 constituting the engagement portion on the lower rail 5 side by the rotation around the rotation axis L. It is configured. In this embodiment, a lock mechanism 30 is formed that can switch between a locked state that restricts relative movement of the upper rail 6 with respect to the lower rail 5 and an unlocked state that allows relative movement therebetween. .

  More specifically, as shown in FIGS. 6, 8 and 9, the lock member 22 of the present embodiment is supported by the upper rail 6 so that the inner side of the upper rail body 17 extends along the first side wall portion 15 a. A main body 32 is provided. In the present embodiment, the main body portion 32 of the lock member 22 has an elongated substantially plate-like outer shape extending in the extending direction of the upper rail 6. Each engagement claw 21 of the lock member 22 bends the upper end portion (the upper end portion in FIG. 8) of the main body portion 32 toward the first side wall portion 15a side (the left side in the same drawing) of the upper rail 6. It is formed by. The first side wall portion 15a of the upper rail 6 and the first folded portion 18a on the first side wall portion 15a side are formed with insertion holes 33 and 34 through which the respective engaging claws 21 of the lock member 22 are inserted. Has been.

  That is, the lock member 22 of the present embodiment rotates about the rotation axis L extending in the extending direction of the upper rail 6, so that the distal end portion of each engagement claw 21 is in the rail width direction (left and right direction in FIG. 8). Configured to move to. Then, the lock mechanism 30 of the present embodiment allows each engagement claw 21 of the lock member 22 to engage each engagement on the lower rail 5 side through the insertion hole 33 formed in the first side wall portion 15a of the upper rail 6. The hole 23 is configured to be engaged and disengaged.

  More specifically, as shown in FIGS. 6, 10, and 11, the lock member 22 of the present embodiment has the first rail of the upper rail 6 at both ends in the longitudinal direction of the main body 32 in the same manner as the engagement claws 21. It has a pair of flange parts 35a and 35b extended toward the side wall part 15a side (lower side in FIG. 11). In the present embodiment, these flange portions 35a and 35b are formed at the lower end portion of the lock member 22 (the main body portion 32). Further, as shown in FIGS. 9 to 11, the upper rail 6 has a substantially U-shaped bent portion 36 (see FIG. 8) formed at the boundary portion between the first side wall portion 15a and the first folded portion 18a. A pair of holes 37a and 37b into which the flanges 35a and 35b on the lock member 22 side are inserted are formed. The lock member 22 of the present embodiment is configured so that the upper rail 6 can rotate around the rotation axis L passing through the first and second rotation fulcrums P1 and P2 formed by the flange portions 35a and 35b. It is the structure supported by.

  Specifically, the upper rail 6 of the present embodiment has a first rotation fulcrum P1 formed by the first flange portion 35a in the first hole portion 37a into which the first flange portion 35a of the lock member 22 is inserted. The support portion 38 is provided. Further, the seat slide device 10 of the present embodiment includes a support bracket 40 that is fixed to the upper rail 6. In the present embodiment, the support bracket 40 is formed by plastic processing a metal plate material. The lock member 22 of the present embodiment is supported by the support bracket 40 at the second rotation fulcrum P2 formed by the second flange portion 35b inserted into the second hole portion 37b of the upper rail 6. It is configured.

  As shown in FIGS. 9 and 12A to 12C, the support bracket 40 of the present embodiment includes a fixing portion 41 for the upper wall portion 16 of the upper rail 6 and an upper rail 6 from one end of the fixing portion 41. And an extending portion 42 extending downward along the first side wall portion 15a, and having a substantially L-shaped cross section (end surface) shape disposed in the upper rail body 17. As shown in FIGS. 10 to 12, a flange portion 43 to be inserted into the second hole portion 37 b of the upper rail 6 together with the second flange portion 35 b of the lock member 22 is formed at the lower end portion of the extending portion 42. ing. As shown in FIGS. 10 and 11, a steel ball 44 is interposed between the flange portion 43 and the second flange portion 35 b of the lock member 22.

  Specifically, in the second hole portion 37 b of the upper rail 6, the flange portion 43 of the support bracket 40 is disposed at a position facing the second flange portion 35 b of the lock member 22. Further, as shown in FIGS. 6, 11, and 12 (c), curved concave surfaces 35 s and 43 s corresponding to the spherical shape of the steel ball 44 are formed on the flange portions 35 b and 43, respectively. . That is, in the seat slide device 10 of the present embodiment, the steel ball 44 is engaged with the both curved concave surfaces 35s and 43s, and the second flange portion 35b of the lock member 22 and the support bracket 40 facing each other. It is sandwiched between the flange portion 43. Thus, the lock member 22 of the present embodiment is configured such that the sandwiched steel ball 44 functions as the second rotation fulcrum P2.

  In the present embodiment, similarly to the second flange portion 35b, a curved concave surface 35s is formed on the first flange portion 35a of the lock member 22 inserted into the first hole portion 37a of the upper rail 6 as well. . Further, as shown in FIGS. 11 and 13 (a) and 13 (b), the first side wall 15a and the first folded portion 18a constituting the upper rail 6 have side end faces 15s and 18s facing the first hole 37a. A curved concave surface 6s is formed opposite to the curved concave surface 35s on the second flange portion 35b side. In the present embodiment, the curved concave surface 6s is formed so as to straddle the substantially U-shaped bent portion 36 formed at the boundary portion between the first side wall portion 15a and the first folded portion 18a. Yes. The seat slide device 10 according to the present embodiment engages with both curved concave surfaces 35s and 6s facing each other, and both side end surfaces of the first side wall portion 15a and the first folded portion 18a facing the first hole portion 37a. A steel ball 44 is provided between 15 s and 18 s and the first flange portion 35 a of the lock member 22.

  In other words, in the present embodiment, the first side wall portion 15a facing the first hole portion 37a and the curved concave surface 6s formed on both side end surfaces 15s, 18s of the first folded portion 18a serve as the support portion 38 on the upper rail 6 side. Yes. The lock member 22 of the present embodiment is configured such that the steel ball 44 sandwiched between the support portion 38 and the first flange portion 35a functions as the first rotation fulcrum P1.

  Further, as shown in FIG. 14, the support bracket 40 of the present embodiment uses a rivet 46 so that the fixing portion 41 is fastened to the upper wall portion 16 of the upper rail 6. Here, in this embodiment, the inner diameter D1 of the rivet insertion hole 47 formed in the fixing portion 41 of the support bracket 40 is set to be substantially equal to the shaft diameter D0 of the rivet 46, whereas the upper wall of the upper rail 6 The rivet insertion hole 48 formed in the portion 16 is set so that its inner diameter D2 is larger than the shaft diameter D0 of the rivet 46 (D2> D1≈D0). Thus, the seat slide device 10 according to the present embodiment can adjust the fixing position of the support bracket 40 along the extending direction of the upper rail 6 when the lock member 22 is assembled.

  That is, in this embodiment, by setting the inner diameter D2 of the rivet insertion hole 48 formed in the upper rail 6 to be larger than the shaft diameter D0 of the rivet 46 constituting the fastening member of the support bracket 40, the upper rail 6 A position adjusting mechanism 50 that enables the fixing position adjustment of the support bracket 40 along the extending direction is formed. Thus, the seat slide device 10 according to the present embodiment can easily support the support portion 38 on the upper rail 6 side and the upper rail 6 in the extending direction of the upper rail 6 where the rotation axis L is formed. The lock member 22 can be sandwiched between the bracket 40 and the bracket 40.

  Further, as shown in FIGS. 7, 9 and 10, the seat slide device 10 of the present embodiment locks the locking member 22 supported by the upper rail 6 as described above in the locking operation direction (see FIG. 8, in the same figure). , A biasing member 60 biasing counterclockwise).

  Specifically, in the seat slide device 10 of the present embodiment, the biasing member 60 includes a torsion bar portion 61 extending in the extending direction of the upper rail 6. In the present embodiment, the urging member 60 is held in the upper rail body 17 at a position on the vehicle rear side (right side in FIGS. 7 and 10, left side in FIG. 9) with respect to the lock member 22. Specifically, as shown in FIGS. 5 and 7B, the urging member 60 of the present embodiment has a plurality of locking members 63 provided at the lower end portion of the first side wall portion 15a. The torsion bar 61 is held between the side wall 15a and the side wall 15a. Further, as shown in FIG. 7B, at one end side of the torsion bar portion 61, there is a rotation preventing portion 64 that has a substantially U-shaped bent shape and comes into contact with the second side wall portion 15b of the upper rail 6. Is provided. The other end side of the torsion bar portion 61 is provided with a pressing portion 65 that has a crank-like bent shape and comes into contact with the lock member 22.

  As shown in FIGS. 6, 7 (a) and 9, the lock member 22 according to the present embodiment has an upper end of the main body portion 32 at the longitudinal end portion on the vehicle rear side where the first flange portion 35 a is formed. An engaging portion 66 extending upward from the portion is provided. Further, as shown in FIGS. 7A, 9, and 15, the biasing member 60 of the present embodiment is such that the tip portion of the pressing portion 65 is from the second side wall portion 15 b side (from the right side in FIG. 15). ), And is configured to come into contact with the engaging portion 66. That is, the urging member 60 of the present embodiment is configured so that the engaging portion 66 of the lock member 22 with which the pressing portion 65 abuts is railed based on the elastic force (elastic restoring force) generated when the torsion bar portion 61 is twisted. It is pressed from the inner side in the width direction to the outer side (in FIG. 15, from the right side to the left side). Thus, the lock mechanism 30 of the present embodiment has the lock member 22 in the direction in which the engagement claws 21 of the lock member 22 engage with the engagement holes 23 of the lower rail 5, that is, in the lock operation direction. Is configured to be urged to rotate.

  As shown in FIGS. 1 to 4 and 7, the seat slide device 10 of the present embodiment includes an operation handle 68 of the lock mechanism 30 that is operated to adjust the slide position of the seat 1, and this operation. And a support member 70 that supports the handle 68 on the upper rail 6.

  Specifically, the operation handle 68 of the present embodiment includes an insertion portion 68a that is inserted into the upper rail body 17 through the front end opening 6a of the upper rail 6. Specifically, in this embodiment, a loop handle formed by bending a pipe material into a substantially U shape is used for the operation handle 68. That is, in the operation handle 68 of the present embodiment, two parallel extending portions are insertion portions 68a that are inserted into the left and right upper rails 6. And the part exposed to the outer side of the upper rail 6 is made into the structure which can perform the operation input by making into the holding part 68b.

  As shown in FIGS. 6, 9 and 16, the locking member 22 of the present embodiment is configured such that the upper end portion of the main body portion 32 is at the longitudinal end portion on the vehicle front side where the second flange portion 35b is formed. The operation input unit 71 extends from the opposite side of the engaging claws 21, that is, from the outer side in the rail width direction to the inner side (left side to right side in FIG. 16). Further, as shown in FIG. 7A, the operation input unit 71 extends in the longitudinal direction of the upper rail 6 toward the front end opening 6a side (from the right side to the left side in the figure). As shown in FIGS. 7A and 16, the support member 70 according to the present embodiment has the distal end portion of the insertion portion 68 a inserted into the upper rail body 17 disposed above the operation input portion 71. In this state, the operation handle 68 is supported by the upper rail 6.

  Specifically, as shown in FIG. 7, the support member 70 of the present embodiment supports the insertion portion 68 a of the operation handle 68 inserted into the upper rail body 17 from the lower side inside the upper rail body 17. . Further, the support member 70 of the present embodiment forms a rotation fulcrum P3 of the operation handle 68 on the support portion of the insertion portion 68a. The operation handle 68 of the present embodiment is configured such that the distal end portion of the insertion portion 68a moves up and down by rotating around the rotation fulcrum P3.

  That is, the seat slide device 10 of the present embodiment is configured such that when the grip portion 68b of the operation handle 68 is pulled up, the distal end portion of the insertion portion 68a inserted into the upper rail body 17 moves downward. Further, the distal end portion of the insertion portion 68a pushes down the operation input portion 71 of the lock member 22, whereby the lock member 22 is unlocked against the biasing force of the biasing member 60 (see FIG. 8, FIG. Rotate clockwise). Then, the lock mechanism 30 of the present embodiment allows the upper rail 6 to move relative to the lower rail 5 by each of the engagement claws 21 of the lock member 22 being removed from the respective engagement holes 23 of the lower rail 5. It is configured to shift to an allowable unlocked state.

  Note that the operation handle 68 of the present embodiment is configured to rotate counterclockwise in FIG. 7A due to its own weight when the pulling operation on the grip portion 68b is stopped. In other words, in this embodiment, the distal end portion of the insertion portion 68a that is in contact with the operation input portion 71 of the lock member 22 is moved upward by this rotation, so that the lock member 22 is moved based on the biasing force of the biasing member 60. Rotate in the locking direction. The lock mechanism 30 according to the present embodiment can thereby move the upper rail 6 relative to the lower rail 5 by engaging the engagement claws 21 of the lock member 22 with the engagement holes 23 of the lower rail 5. It is the structure which returns to the locked state which regulates.

  Further, as shown in FIGS. 7B and 17, in the seat slide device 10 of the present embodiment, the support member 70 of the operation handle 68 is formed by a single spring member 80 formed by bending a wire rod. 22 urging members 60 are integrally formed.

  More specifically, the spring member 80 of the present embodiment has a first longitudinal end 81 having a substantially U-shaped bent shape. The spring member 80 includes a first extending portion 82a and a second extending portion 82b that extend continuously in parallel with the first longitudinal end portion 81 thereof. Further, the first extending portion 82a and the second extending portion 82b are formed with engaging portions 83a and 83b that have a substantially U-shaped bent shape and bulge outward in the width direction of the spring member 80, respectively. Has been. The spring member 80 of the present embodiment has a first longitudinal direction from each of the engaging portions 83a and 83b extending along the longitudinal direction of the upper rail 6 when the engaging portions 83a and 83b engage with the upper rail 6. The section up to the direction end 81 side functions as the support member 70 of the operation handle 68.

  Specifically, as shown in FIGS. 4 and 18A and 18B, the upper rail 6 of the present embodiment has a corner between the side wall portions 15 (15a, 15b) and the upper wall portion 16 thereof. Long hole-like engagement holes 84a and 84b extending in the extending direction of the upper rail 6 are formed in the respective parts. In the spring member 80 of this embodiment, the engaging portions 83a and 83b formed in the first extending portion 82a and the second extending portion 82b are engaged with the engaging holes 84a and 84b, respectively. By combining, it is configured to be held inside the upper rail body 17.

  As shown in FIG. 7B, the spring member 80 of the present embodiment has a first extending portion 82 a arranged along the first side wall portion 15 a of the upper rail 6 and a second extending portion 82 b of the upper rail 6. It arrange | positions along the 2 side wall part 15b. Further, as shown in FIG. 7A, in the section constituting the support member 70 of the operation handle 68, the front end opening 6a of the upper rail 6 rather than the respective engaging portions 83a, 83b locked to the upper rail 6. 1st longitudinal direction edge part 81 near is arranged in a lower position. Thus, the spring member 80 of the present embodiment is configured such that the first longitudinal direction end portion 81 supports the insertion portion 68a of the operation handle 68 from below.

  That is, as shown in FIGS. 7A and 7B, the operation handle 68 of the present embodiment is such that the insertion portion 68a inserted into the upper rail body 17 with respect to the upper rail 6 has the first extension of the spring member 80. It is assembled so as to be disposed between the portion 82a and the second extending portion 82b. Further, a groove 85 that is orthogonal to the extending direction of the insertion portion 68a is formed at the lower end portion of the insertion portion 68a. And the operation handle 68 of this embodiment can be rotated around the rotation fulcrum P3 formed in the engagement part by engaging the groove portion 85 with the first longitudinal end portion 81 of the spring member 80. In this state, the upper rail 6 is supported.

  Further, as shown in FIGS. 7B and 17, in the spring member 80 of the present embodiment, the second extending portion 82 b disposed on the second side wall portion 15 b side of the upper rail 6 holds the lock member 22. It extends beyond the position to the rear side (right side in FIG. 7). In addition, the spring member 80 of this embodiment has the 1st terminal part 87a in the vicinity of the engaging part 83a formed in the 1st extending | stretching part 82a arrange | positioned at the 1st side wall part 15a side of the upper rail 6. FIG. ing. Furthermore, the spring member 80 of the present embodiment includes a second longitudinal end portion 88 having a substantially U-shaped bent shape that is continuous with the second extending portion 82b. The spring member 80 of the present embodiment is configured such that the section from the second longitudinal end portion 88 to the second terminal portion 87b functions as the biasing member 60 of the lock member 22.

  Specifically, the spring member 80 of the present embodiment has a third extending portion 82c that is continuous with the second longitudinal end portion 88 and extends in parallel with the second extending portion 82b. The third extending portion 82c extends along the first side wall portion 15a by being locked by a plurality of locking members 63 provided at the lower end portion of the first side wall portion 15a. Further, a substantially crank-shaped bent portion 90 is formed at the tip of the third extending portion 82c. And the spring member 80 of this embodiment has the 2nd terminal part 87b at the front-end | tip of this bending shape part 90. FIG.

  That is, as shown in FIGS. 7B and 9, the spring member 80 of the present embodiment has a third extending portion 82 c extending in the extending direction of the upper rail 6 at the lower end portion of the first side wall portion 15 a. A torsion bar portion 61 of the member 60 is configured. Further, the bent portion 90 formed at the distal end portion of the third extending portion 82 c constitutes the pressing portion 65 of the urging member 60 that contacts the engaging portion 66 of the lock member 22. Then, when the second extending portion 82b abuts on the first side wall portion 15a of the upper rail 6 in the vicinity of the second longitudinal end portion 88, the substantially U-shaped portion of the second longitudinal end portion 88 is biased. The member 60 is configured to function as a detent portion 64 of the member 60.

As described above, according to the present embodiment, the following effects can be obtained.
(1) The seat slide device 10 includes an upper rail 6 that supports the seat 1 upward, a lower rail 5 that supports the upper rail so as to be relatively movable, and a rotation that is supported by the upper rail 6 along the extending direction of the upper rail 6. And a locking member 22 that engages and disengages with respect to the engaging portion of the lower rail 5 by rotating around the axis L. The lock member is sandwiched between the support portion 38 formed on the upper rail 6 and the support bracket 40 fixed to the upper rail 6, and the first rotation fulcrum P <b> 1 is formed on the upper rail 6. The second rotation fulcrum P2 is supported by the support bracket 40 fixed to the upper rail 6 while being supported by the portion 38.

  According to the above configuration, the lock member 22 can be stably supported on the upper rail 6 with a simpler configuration. As a result, it is possible to achieve excellent assembly while ensuring high reliability.

  (2) The seat slide device 10 includes a position adjustment mechanism 50 that enables the fixing position adjustment of the support bracket 40 along the extending direction of the upper rail 6. Accordingly, the locking member 22 is easily sandwiched between the support portion 38 on the upper rail 6 side and the support bracket 40 fixed to the upper rail 6 in the extending direction of the upper rail 6 where the rotation axis L is formed. Can do. As a result, better assemblability can be ensured.

  (3) The support bracket 40 is fixed to the upper wall portion 16 of the upper rail 6 based on the fastening force of the rivet 46 as a fastening member. An inner diameter D1 of the rivet insertion hole 47 as a hole formed in the fixing portion 41 of the support bracket 40 is set to be substantially equal to the shaft diameter D0 of the rivet 46. The rivet insertion hole 48 as a hole formed in the upper wall portion 16 of the upper rail 6 is set so that its inner diameter D2 is larger than the shaft diameter D0 of the rivet 46 (D2> D1≈D0). ).

According to the above configuration, the position adjustment mechanism 50 capable of adjusting the fixing position of the support bracket 40 along the extending direction of the upper rail 6 can be formed with a simple configuration.
(4) The upper rail 6 is formed with a pair of holes 37a and 37b penetrating through the first side wall 15a and the first folded portion 18a. Further, the first flange portion 35a and the second flange portion 35b of the lock member 22 forming the first and second rotation fulcrums P1 and P2 respectively correspond to the corresponding first hole portion 37a and second hole portion 37b. Inserted inside. And the support part 38 by the side of the upper rail 6 is formed ranging over the both side end surfaces 15s and 18s of the 1st side wall part 15a which faces the 1st hole part 37a, and the 1st folding | turning part 18a.

  According to the said structure, the 1st flange part 35a of the lock member 22 forms in the aspect in which the rotating shaft L is formed between the 1st side wall part 15a which comprises the upper rail 6, and the 1st folding | turning part 18a. The first rotation fulcrum P1 can be supported. As a result, the lock member 22 can be stably supported on the upper rail 6 with a simple configuration.

  (5) The seat slide device 10 is interposed between the support portion 38 on the upper rail 6 side and the first flange portion 35 a of the lock member 22, so that the steel ball 44 functioning as the first rotation fulcrum P <b> 1 is provided. Prepare. And the support part 38 by the side of the upper rail 6 is comprised by the curved concave surface 6s straddling the both end surfaces 15s and 18s of the 1st side wall part 15a which faces the 1st hole part 37a where the steel ball 44 is arrange | positioned, and the 1st folding | turning part 18a. Is done.

  That is, by using the curved concave surface 6s as the support portion 38, the first rotation fulcrum P1 can be stably supported at the bottom of the curved concave surface 6s. In particular, in a configuration in which a spherical surface or curved convex surface shape such as the steel ball 44 functions as the first rotation fulcrum P1, a more remarkable effect can be obtained. As a result, the lock member 22 can be supported on the upper rail 6 more stably with a simple configuration.

[Second Embodiment]
Hereinafter, 2nd Embodiment regarding a vehicle seat slide apparatus is described according to drawing. For convenience of explanation, the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

  As shown in FIGS. 19 and 20, the seat slide device 10B of the present embodiment is different from the first embodiment in the configuration of the lock mechanism 30B, specifically, the support structure of the lock member 22B. .

  More specifically, the lock member 22B according to the present embodiment is provided on the support portion 38 side of the upper rail 6B facing the flange portions 35a and 35b at both ends in the longitudinal direction in the hole portions 37a and 37b of the upper rail 6B. It has a substantially hemispherical curved convex surface 91 that is convex toward the flange 43 side of the bracket 40B. The lock member 22B of the present embodiment is configured such that each of the curved convex surfaces 91 functions as the first and second rotation fulcrums P1 and P2.

  Specifically, in the present embodiment, each of the curved convex surfaces 91 is formed by plastic processing of the flange portions 35a and 35b. Further, the curved convex surface 91 on the first flange portion 35a side constituting the first rotation fulcrum P1 has a first side wall portion 15a and a first folded portion 18a facing the first hole portion 37a into which the flange portion 35a is inserted. By engaging with the curved concave surface 6s straddling both side end surfaces 15s, 18s, it is supported by the support portion 38 on the upper rail 6B side. Further, the curved convex surface 91 on the second flange portion 35b side constituting the second rotation fulcrum P2 is also engaged with the curved concave surface 43s formed on the flange portion 43 of the opposing support bracket 40B, thereby It is supported by the support bracket 40B. In the present embodiment, the curved concave surface 43 s on the flange portion 43 side of the support bracket 40 </ b> B is configured by the inner wall surface of the hole portion 92 formed in the flange portion 43. In this state, the lock member 22 of the present embodiment is sandwiched between the support portion 38 on the upper rail 6B side and the support bracket 40B fixed to the upper rail 6B, so that each of the curved convex surfaces 91 is formed. It is configured to be supported by the upper rail 6B so as to be rotatable around the rotation axis L passing through the first and second rotation fulcrums P1 and P2.

  As shown in FIGS. 21 and 22, in the present embodiment, the upper wall 16 </ b> B of the upper rail 6 </ b> B is formed with a hole 95 aligned with the rivet insertion hole 48 in the extending direction of the upper rail 6 </ b> B. As shown in FIGS. 19, 21, and 22, the fixing portion 41 </ b> B of the support bracket 40 </ b> B is formed with a protrusion (boss) 96 that is inserted into the hole 95.

  Specifically, the hole 95 of the present embodiment is formed in a long hole shape extending in the extending direction of the upper rail 6B. Further, the protrusion 96 has a flat, generally cylindrical outer shape having a diameter substantially equal to the inner diameter of the hole 95 in the rail width direction (a direction orthogonal to the paper surface in FIG. 22). Then, in the seat slide device 10B of the present embodiment, in this manner, the protrusion 96 provided in the support bracket 40B relatively moves in the hole 95 formed in the upper rail 6B in the extending direction of the upper rail 6B. A position adjusting mechanism 50B capable of adjusting the fixing position of the support bracket 40B is formed.

As described above, according to the present embodiment, in addition to the same effects as those of the first embodiment, the following effects can be obtained.
(1) A curved convex surface 91 is formed on each of the flange portions 35a and 35b of the lock member 22B so as to protrude toward the support portion 38 side provided on the upper rail 6B and the flange portion 43 side of the support bracket 40B. The lock member 22B is configured such that each of the curved convex surfaces 91 functions as the first and second rotation fulcrums P1 and P2.

  According to the said structure, the steel ball 44 used for the seat slide apparatus 10 in 1st Embodiment is abbreviate | omitted, and the structure can be simplified further. As a result, better assemblability can be ensured.

  (2) An elongated hole 95 extending in the extending direction of the upper rail 6B is formed in the upper wall portion 16B of the upper rail 6B at a position aligned with the rivet insertion hole 48 in the extending direction of the upper rail 6B. In addition, a protrusion 96 that is inserted into the hole 95 is formed in the fixing portion 41B of the support bracket 40B. The position adjusting mechanism 50B is configured such that the protrusion 96 is relatively movable in the hole 95 along the extending direction of the upper rail 6B.

  According to the above configuration, when the fixing position of the support bracket 40B is adjusted, the tilt around the rivet 46 inserted through the rivet insertion holes 47 and 48 is suppressed, and the support along the rotation axis L extending in the extending direction of the upper rail 6B is supported. The posture of the bracket 40B can be maintained. And thereby, the assembly | attachment property can be improved.

In addition, you may change each said embodiment as follows.
In the first embodiment, between the support portion 38 on the upper rail 6 side and the first flange portion 35a of the lock member 22, and between the flange portion 43 of the support bracket 40 and the second flange portion 35b of the lock member 22. The steel balls 44 sandwiched between the first and second pivots P1 and P2 respectively constitute the first and second rotation fulcrums P1 and P2. In the first embodiment, the curved convex surfaces 91 formed on the flange portions 35a and 35b of the lock member 22B constitute the first and second rotation fulcrums P1 and P2, respectively. . However, the shape of the first and second rotation fulcrums P1 and P2 is not limited to this, and any shape may be used. For example, the rotation fulcrum of the lock member may be configured by an axial portion, a curved concave surface, or the like. And the shape of the 1st and 2nd rotation fulcrum P1, P2 may mutually differ.

  In the first embodiment, each curved concave surface 6s, 35s, 43s is formed corresponding to the spherical shape of the steel ball 44, but the curved concave surface shape is not necessarily hemispherical. Good. For example, a hook shape or a lens shape may be used. What has a bottom part in the center part is preferable. Further, the curved convex surface 91 in the second embodiment may be similarly changed.

  In each of the above embodiments, the first side wall portion 15a facing the first hole portion 37a and the curved concave surface 6s formed on both side end surfaces 15s, 18s of the first folded portion 18a constitute the support portion 38 on the upper rail 6 side. It was. However, the present invention is not limited to this, and the configuration of the support portion 38 formed on the upper rail 6 may be arbitrarily changed. For example, the support portion 38 may not be the curved concave surface 6s. And the structure by which the support part 38 by the side of the upper rail 6 is formed in positions other than the both end surfaces 15s and 18s of the 1st side wall part 15a and the 1st folding | turning part 18a may be sufficient.

In each of the above embodiments, the support bracket 40 is fixed to the upper wall portion 16 of the upper rail 6. However, for example, the fixing portion such as the side wall portion 15 may be arbitrarily changed.
In each of the above embodiments, the inner diameter D2 of the rivet insertion hole 48 formed in the upper wall portion 16 of the upper rail 6 is larger than the shaft diameter D0 of the rivet 46, so that the upper rail 6 extends along the extending direction. The position adjustment mechanism 50 that enables the fixing position adjustment of the support bracket 40 is formed.

  However, the present invention is not limited to this, for example, a configuration in which the inner diameter D1 of the rivet insertion hole 47 formed in the fixing portion 41 of the support bracket 40 is larger than the shaft diameter D0 of the rivet 46, or the rivet insertion hole 47, The inner diameters D1 and D2 of 48 may be larger than the shaft diameter D0 of the rivet 46. Further, at least one of the rivet insertion holes 47 and 48 may be a long hole extending in the extending direction of the upper rail 6. The fastening member is not limited to the rivet 46 but may be a screw member such as a bolt. And at least any one of the holes through which the fastening member is inserted may be one that allows relative movement of the fastening member in the extending direction of the upper rail.

  In the second embodiment, a long hole 95 is formed on the upper wall 16B side of the upper rail 6B, and the protrusion is inserted into the hole 95 on the fixing part 41B side of the support bracket 40B. 96 was formed. However, the present invention is not limited to this, and a configuration may be employed in which a long hole is formed on the support bracket side, and a protrusion inserted into the long hole is formed on the upper rail side.

Next, technical ideas that can be grasped from the above embodiments will be described together with effects.
(A) The vehicle seat slide device, wherein the rotation fulcrum is supported by a curved concave surface.

  That is, by using the curved concave surface as the support portion, the rotation fulcrum can be stably supported at the bottom of the curved concave surface. In particular, when the rotation fulcrum is a spherical surface or a curved convex surface, a more remarkable effect can be obtained. Thus, the lock member can be supported on the upper rail more stably with a simple configuration.

  (B) The support bracket is fixed to the upper rail based on the fastening force of the fastening member, and at least one of the holes through which the fastening member is inserted is the fastening member in the extending direction of the upper rail. A vehicle seat slide device characterized by allowing relative movement of the vehicle.

According to the above configuration, it is possible to form a position adjusting mechanism that can adjust the fixing position of the support bracket along the extending direction of the upper rail with a simple configuration.
(C) The position adjusting mechanism includes a long hole extending along the extending direction of the upper rail provided on one side of the upper rail and the support bracket, and the length provided on the other side of the upper rail and the support bracket. And a protrusion inserted into the hole, and the protrusion is configured to be relatively movable in the elongated hole along the extending direction of the upper rail.

  According to the above configuration, when adjusting the fixing position of the support bracket, the tilt of the fastening member inserted through the hole portion of the upper rail is suppressed, and the posture of the support bracket is maintained along the rotation axis extending in the extending direction of the upper rail. can do. And thereby, the assembly | attachment property can be improved.

  DESCRIPTION OF SYMBOLS 1 ... Seat, 5 ... Lower rail, 6, 6B ... Upper rail, 6s ... Curved concave surface, 10, 10B ... Seat slide device, 15 ... Side wall part, 15a ... 1st side wall part, 15b ... 2nd side wall part, 15s ... Side end surface 16, 16B ... upper wall portion, 18 ... folded portion, 18a ... first folded portion, 18s ... side end surface, 21 ... engaging claw, 22, 22B ... lock member, 23 ... engaging hole (engaging portion), 30, 30B ... Lock mechanism, 32 ... Main body part, 35a ... First flange part (flange part), 35b ... Second flange part (flange part), 35s ... Curved concave surface, 36 ... Bent shape part, 37a ... First Hole part (hole part), 37b ... 2nd hole part (hole part), 38 ... support part, 40, 40B ... support bracket, 41, 41B ... fixed part, 42 ... extension part, 43 ... flange part, 43s ... curved Concave surface, 44 ... steel ball, 46 ... rivet (fastening member) 47, 48 ... Rivet insertion hole (hole), 50, 50B ... Position adjustment mechanism, 60 ... Biasing member, 68 ... Operation handle, 70 ... Support member, 80 ... Spring member, 91 ... Curved convex surface, 92 ... Hole , 95 holes (long holes), 96 projecting parts, L rotating shafts, D0 shaft diameters, D1, D2 inner diameters, P1 first rotating fulcrum, P2 second rotating fulcrum.

Claims (4)

An upper rail that supports the seat upward,
A lower rail that supports the upper rail in a relatively movable manner;
A locking member supported by the upper rail and engaged with and disengaged from the engaging portion of the lower rail by rotating around a rotation axis along the extending direction of the upper rail,
The lock member is supported by a support portion formed on the upper rail with a first rotation fulcrum in a state of being sandwiched between a support portion formed on the upper rail and a support bracket fixed to the upper rail. And a vehicle seat slide device in which a second pivot point is supported by the support bracket fixed to the upper rail. The vehicle seat slide device according to claim 1,
A vehicle seat slide device comprising: a position adjustment mechanism capable of adjusting a fixed position of the support bracket in the extending direction of the upper rail. In the vehicle seat slide device according to claim 1 or 2,
The upper rail includes a side wall portion extending in the vertical direction, and a folded portion folded back upward from the lower end of the side wall portion,
The upper rail is formed with a hole that penetrates the side wall and the folded portion,
The vehicle seat slide device according to claim 1, wherein the support portion on the upper rail side is formed across a side end surface of the side wall portion facing the hole and a side end surface of the folded portion. In the vehicle seat slide device according to any one of claims 1 to 3,
The curved convex surface formed on the lock member constitutes the pivot point;
A vehicle seat slide device.