WO2013161620A1

WO2013161620A1 - Vehicle slide rail apparatus

Info

Publication number: WO2013161620A1
Application number: PCT/JP2013/061248
Authority: WO
Inventors: 藤岡　秀彦
Original assignee: シロキ工業株式会社
Priority date: 2012-04-27
Filing date: 2013-04-16
Publication date: 2013-10-31
Also published as: JPWO2013161620A1

Abstract

Provided is a vehicle slide rail apparatus such that a rotating means and a play eliminating roller can be mounted to an upper rail with high positional accuracy, and the upper rail can be prevented from becoming unable to slide with respect to a lower rail even when large external force is applied to the upper rail. In a solution, the vehicle slide rail apparatus is provided with: a bracket (80) including a bottom surface portion (81) traversing a lower surface of an upper rail (26) and including a pair of side wall portions (82) extending from both side portions of the bottom surface portion upward and respectively abutting on side surfaces of the upper rail, the bracket (80) being fixed onto the upper rail; rotating means (85) respectively rotatably supported on the left and right side wall portions and contacting rotating means support surfaces (17) of a lower rail (15); support shafts (86) respectively supported by the left and right side wall portions; and a play eliminating roller (87) rotatably supported on each support shaft, with an outer peripheral surface contacting the lower rail.

Description

Slide rail device for vehicle

The present invention relates to a vehicle slide rail device that slidably supports a seat.

Patent Document 1 is a conventional example of a slide rail device for a vehicle, which is a channel-shaped lower rail having an open upper surface extending in the front-rear direction, an upper rail inserted into the inner space of the lower rail, and a lower rail provided on each of the left and right side surfaces of the upper rail. And a plurality of rollers that rotatably contact the bottom surface. Therefore, it is possible to slide the upper rail in the front-rear direction with respect to the lower rail while rolling each roller on the bottom surface of the lower rail.
Further, on both left and right side surfaces of the upper rail, support shafts (shaft support portions) that are inclined with respect to the vertical direction and the horizontal direction are respectively projected, and each support shaft is provided at the center portion of the backlash removal roller (tilt roller). The formed through hole is rotatably fitted.

The inner surfaces of the left and right upper corners of the lower rail are corner curved surfaces having a curved cross section, and the outer peripheral surfaces of the left and right play removing rollers are in contact with the left and right corner curved surfaces in a rotatable manner.
Therefore, in the vehicle slide rail device of Patent Document 1, the upper rail is less likely to rattle against the lower rail during the sliding operation of the upper rail with respect to the lower rail.

Japanese Patent Laid-Open No. 10-250422

The upper rail of Patent Document 1 has a structure in which two metal plates constituting the left half and the right half are joined, and the roller and the support shaft (backlash removal roller) are attached to each of the left and right metal plates. It is attached. Therefore, when the joining position of the left and right metal plates is deviated from the design position, the positions of the left and right rollers and the backlash removal roller are deviated from the design position, and the sliding operation of the upper rail with respect to the lower rail may become unsmooth.

Further, since the upper rail is a channel material having an open bottom surface, if a large external force is applied to the upper rail during a vehicle collision or the like, the upper rail may be deformed (plastic) in a direction in which the left and right side walls open outward.
If the upper rail is deformed, the positions of the rollers and the backlash removal rollers are greatly deviated from the design position, and thus the upper rail may not be slidable with respect to the lower rail.

The present invention is a vehicle slide rail device in which a roller and a backlash removing roller can be attached to an upper rail with high positional accuracy, and even if a large external force is applied to the upper rail, the upper rail is difficult to slide with respect to the lower rail. Is to provide.

A vehicle slide rail device according to the present invention has a channel shape extending in the front-rear direction and having an upper surface opened, and a lower rail having a horizontal rotating means support surface on an inner surface thereof, and an upper rail inserted into an inner space of the lower rail; A bracket fixed to the upper rail, having a bottom surface crossing the lower surface of the upper rail, and a pair of side wall portions extending upward from both side portions of the bottom rail and in contact with both side surfaces of the upper rail. A rotating means that is rotatably supported by the left and right side wall portions, and that contacts the corresponding rotating means supporting surface; a support shaft that is supported by the left and right side wall portions; And a backlash removing roller that is supported and whose outer peripheral surface comes into contact with the lower rail.

The lower rail includes a corner curved surface positioned above the rotation means support surface, the support shaft is inclined with respect to a vertical direction and a horizontal direction, and the outer peripheral surface of the play removing roller corresponds to the corner curved surface. May contact.

The bracket may be fixed to the end of the upper rail in the longitudinal direction.

In each of the both side surfaces of the upper rail, an inclined roller escape hole for accommodating a part of the corresponding play removing roller may be formed.

A shaft escape hole for accommodating a part of the corresponding rotating means may be formed on each of both side surfaces of the upper rail.

The vehicle slide rail device of the present invention supports the rotation means and the backlash removing roller (support shaft) on the left and right side wall portions of one bracket. It can be attached to the bracket with high positional accuracy without deviating from the design position. Therefore, there is little possibility that the sliding operation of the upper rail with respect to the lower rail becomes unsmooth.

Further, the bracket includes a bottom surface crossing the lower surface of the upper rail, and a pair of side wall portions extending upward from both side portions of the bottom surface portion and in contact with both side surfaces of the upper rail, and is fixed to the upper rail. That is, since the bracket reinforces the upper rail in a strong manner, even if a large external force is applied to the upper rail in the event of a vehicle collision or the like, the upper rail is less likely to be (plastic) deformed in the direction in which the left and right side walls open outward. . Therefore, the possibility that the upper rail cannot slide relative to the lower rail when a vehicle collision or the like occurs can be reduced as compared with the conventional case.

According to the second aspect of the invention, the play of the backlash of the upper rail with respect to the lower rail can be surely prevented by bringing the backlash removal roller into contact with the corner curved surface.

When configured as in the invention of claim 3, the strength of the end portion of the upper rail is improved. Generally, a large load is applied to the end of the upper rail at the time of a vehicle collision. Therefore, by reinforcing the end portion of the upper rail, it is possible to effectively prevent the upper rail from being deformed when the vehicle collides.

When configured as in the inventions of claims 4 and 5, it is possible to reduce the width dimension (cross-sectional shape) of the combined body of the upper rail, the bracket, the rotating means, and the backlash removing roller (support shaft). Become.

It is a side view of the slide rail device for vehicles of one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line II-II in FIG. FIG. 3 is a cross-sectional view taken along the line III-III in FIG. FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1. It is a perspective view of an upper rail unit. It is a perspective view of an upper rail unit in the state where a roller unit was separated. FIG. 7 is a cross-sectional view taken along the line VII-VII in FIG. It is an enlarged view of the VIII part of FIG. It is the perspective view seen from the slanting lower part of the locking member. FIG. 2 is a cross-sectional view taken along the line XX in FIG. It is sectional drawing similar to FIG. 10 when a locking member is located in an unlocking position. FIG. 2 is a cross-sectional view taken along line XII-XII in FIG. FIG. 3 is a sectional view taken along the line XIII-XIII in FIG. FIG. 2 is a cross-sectional view taken along the XIV-XIV arrow line in FIG. 1. It is an expanded sectional view of the principal part of the rail unit cut | disconnected in the same position as FIG. 3 of a modification.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The direction in the following description is based on the arrow direction indicated in the figure.
A slide rail device 10 is provided on the interior floor of an automobile (vehicle) (not shown). The slide rail device 10 includes a pair of left and right rail units 12 as large components, and a sheet (not shown) is fixed to the upper surfaces of the left and right rail units 12 (upper rail unit 25).
Since the left and right rail units 12 are symmetrical to each other, in the following description, the structure of the right rail unit 12 will be described, and the description of the structure of the left rail unit 12 will be omitted.

The right rail unit 12 includes a lower rail 15 and an upper rail unit 25.
The metal lower rail 15 fixed to the vehicle interior floor surface is a channel material that extends linearly in the front-rear direction and that has both front and rear ends and an upper surface opened. The lower rail 15 includes a fixed portion 16 that is placed on the floor of the vehicle, a pair of roller support portions 17 that extend horizontally from the left and right edges of the fixed portion 16 toward the left and right sides, and left and right A pair of side wall portions 18 extending upward from the outer edge portion of the roller support portion 17, a pair of ceiling wall portions 19 extending horizontally from the upper edge portions of the left and right side wall portions 18, and left and right ceiling wall portions 19 and a pair of hanging pieces 20 that hang down from the inner edge portion. As shown in the drawing, the connecting portion between the upper edge portion of the side wall portion 18 and the outer edge portion of the ceiling wall portion 19 is an upper corner portion 21 having a circular arc cross section. The right hanging piece 20 has a large number of lock holes 22 aligned in the front-rear direction.

The upper rail unit 25 includes an upper rail 26, a lock support spring 62, a lock member 68, and a roller unit 79 as large components.
The upper rail 26, which is a metal front-back symmetrical structure, is formed by joining the outer component plate member 28 and the inner component plate member 55.
The outer component plate-shaped member 28 includes an outer standing piece 29, an inner standing piece 30 extending upward from an inner edge of a portion extending inward from the lower edge of the outer standing piece 29, and an upper edge of the inner standing piece 30. An inclined piece 31 that extends upward while being inclined, a joining piece 32 that extends upward from the upper edge of the inclined piece 31, and a circular shape that extends rightward from an inclined edge located at both front and rear ends of the upper edge of the joining piece 32. The front support piece 33 and the rear support piece 34 having through-holes are concentric with the through-holes (of the front support piece 33 and the rear support piece 34) on the lower surface of the front support piece 33 and the rear support piece 34. And a weld nut 35 welded thereto.
A shaft escape hole 37 is formed in the vicinity of the front end and the vicinity of the rear end of the outer standing piece 29, and an inclined roller is provided immediately after the front shaft escape hole 37 and immediately before the rear shaft escape hole 37. An escape hole 38 is formed. In addition, three lock holes 39 whose front and rear positions coincide with each other are formed as through-holes in the central portion in the longitudinal direction of the outer standing piece 29 and the inner standing piece 30.
A central through hole 41 having a rectangular shape in a side view is formed in a central portion in the longitudinal direction of the outer constituent plate-like member 28 so as to extend over the inclined piece 31 and the joining piece 32. Cut and raised pieces 42 (upper and lower movement restricting support pieces) are formed on both front and rear edges of the central through hole 41, respectively. As shown in the drawing, the front and rear cut-and-raised pieces 42 extend toward the right side, and a spring support groove 43 (a vertical movement restriction support groove that extends diagonally to the left in front view on the right side surface of each cut-and-raised piece 42. ) Is formed. The upper surface and the lower surface (a pair of inner surfaces) of the spring support groove 43 form a spring clamping surface 44 in which the vertical interval gradually decreases toward the left diagonally downward (the pair of spring clamping surfaces 44 diagonally downward to the left). Symmetric with respect to a particular straight line extending).
The joining piece 32 is formed with a pair of cut and raised pieces 46 positioned before and after the central through hole 41. The front and rear cut-and-raised pieces 46 extend toward the right side, and a spring support groove 47 is formed on the right side surface of each cut-and-raised piece 46 so as to extend toward the left side when viewed from the front. The upper surface and the lower surface (a pair of inner surfaces) of the spring support groove 47 form a spring clamping surface 48 in which the vertical distance from each other becomes gradually narrower toward the left side (the pair of spring clamping surfaces 48 is a specific extending in the left-right direction). Symmetric about a straight line).
Further, a pair of front and rear cut-and-raised pieces 50 (supports) are provided at the upper edge portion of the joining piece 32 at two locations, a portion positioned in front of the front cut-and-raised piece 46 and a portion located rearward of the rear-cut and raised piece 46. A piece) is formed. The front and rear cut and raised pieces 50 extend toward the right side, and a spring support groove 51 (support groove) extending toward the right side in plan view is formed on the left side surface of each cut and raised piece 50. The front surface and the rear surface (a pair of inner surfaces) of the spring support groove 51 are spring clamping surfaces 52 whose front-rear intervals gradually become narrower toward the right side (the pair of spring clamping surfaces 52 is a specific extending in the left-right direction). Symmetric about a straight line).

The inner component plate-like member 55 includes an outer standing piece 56, an inner standing piece 57 extending upward from an inner edge of a portion extending inward from the lower edge of the outer standing piece 56, and an upper edge of the inner standing piece 57. An inclined piece 58 that extends upward while inclining, a joining piece 59 that extends upward from the upper edge of the inclined piece 58, and circular through holes that extend rightward from the upper edge of the joining piece 59 and are formed at the inclined parts at the front and rear ends. And a formed support piece 60. The outer upright piece 56 has the same arrangement and shape as the outer upright piece 29, and is formed with a pair of front and rear shaft escape holes 37 and an inclined roller escape hole 38. Further, a central through hole 61 having a rectangular shape in a side view is formed in a central portion in the longitudinal direction of the inner constituent plate-like member 55 so as to extend over the inclined piece 58 and the joining piece 59.
As shown in the drawing, the outer component plate-like member 28 and the inner component plate-like member 55 have the right side surface of the joining piece 59 of the inner component plate-like member 55 brought into contact with the left side surface of the joining piece 32 of the outer component plate-like member 28, In a state where the front and rear inclined portions of the support piece 60 are in contact with the upper surfaces of the front support piece 33 and the rear support piece 34, a plurality of locations of the joining piece 59 and the joining piece 32 are fixed by rivets or spot welding. In this way, by fixing the outer component plate member 28 and the inner component plate member 55, the upper rail 26, which is a channel material having an open lower surface, is completed.

The lock support spring 62 is a symmetric member obtained by bending a metal wire having a circular cross section. The lock support spring 62 extends in the front-rear direction and is coaxial with each other, and a pair of front and rear rotating shaft parts 63, and a front-side upward projecting upward from the front end of the front-side rotating shaft part 63 and the rear end of the rear-side rotating shaft part 63. A substantially U-shaped lock pressing portion 66 (lock-side locking portion) located between the locking piece 64 (locking portion) and the rear-side upward locking piece 65 (locking portion) and the front and rear rotating shaft portions 63. (Rotation urging unit).
The metal lock member 68 includes a base portion 69, three lock claws 70 protruding rightward from the lower end of the base portion 69, and an operation piece 71 protruding rightward from the upper end of the base portion 69. A square through-hole 72 is formed in the center of the base 69, and a cut-and-raised piece 73 extending obliquely upward to the left is formed at the lower edge of the square through-hole 72. A spring support groove 74 (lock side support groove) (spring contact portion) extending toward the right side in a plan view (side view) is formed on the upper end surface of the cut and raised piece 73. The front and rear surfaces (a pair of inner surfaces) of the spring support groove 74 are spring clamping surfaces 75 in which the distance between the front and rear is gradually reduced toward the right side (the pair of spring clamping surfaces 75 are symmetrical in the front-rear direction in plan view). is there). Cut and raised pieces 76 extending toward the right side are formed on the front edge portion and the rear edge portion of the base portion 69, respectively. A spring support groove 77 (rotational support groove) is formed on the right side surface of each cut-and-raised piece 76 and extends obliquely upward to the left in front view. An upper surface and a lower surface (a pair of inner surfaces) of the spring support groove 77 form a spring clamping surface 78 in which the vertical distance between the upper and lower surfaces gradually decreases toward the left diagonally upward (the pair of spring clamping surfaces 78 is diagonally upward to the left). Symmetric with respect to a particular straight line extending).

The lock support spring 62 and the lock member 68 are attached to the upper rail 26 by the following procedure.
First, the lock member 68 is positioned between the front and rear cut-and-raised pieces 42 from the right side of the upper rail 26, and the lower portion of the lock member 68 is interposed between the inclined piece 31 and the inclined piece 58 via the central through hole 41 and the central through hole 61. Insert into the space.
Next, while elastically deforming the front and rear rotating shaft portions 63 of the lock support spring 62, the corresponding spring support grooves 47, spring support grooves 43, and spring support grooves 77 are inserted (engaged) from the right side, and the lock pressing portions 66 are inserted. The spring support groove 74 is inserted (engaged) from above (left side) while elastically deforming the rear part, and the front and rear spring supports are further elastically deformed while the front upward locking piece 64 and the rear upward locking piece 65 are elastically deformed. Insert (engage) into the groove 51. Then, the lock support spring 62 is supported by the upper rail 26, and the lock support spring 62 supports the lock member 68, so that the upper rail 26, the lock support spring 62, and the lock member 68 are integrated.
When the upper rail 26, the lock support spring 62, and the lock member 68 are integrated, the lock support spring 62 generates an elastic force that moves the front-side upward locking piece 64 and the rear-side upward locking piece 65 toward the right side. Therefore, the front-side upward locking piece 64 and the rear-side upward locking piece 65 try to move to the back side (right side) of the corresponding spring support groove 51, and the front and back of the front-side upward locking piece 64 and the rear-side upward locking piece 65. The two places come into contact with the two spring clamping surfaces 52 of the corresponding spring support grooves 51 (bite in, see FIG. 8). Therefore, backlash in the front-rear direction between the front-side upward locking piece 64 and the rear-side upward locking piece 65 and the corresponding spring support groove 51 is removed.
Further, the lock support spring 62 generates an elastic force that moves the front and rear rotary shafts 63 toward the left side, so that the front and rear rotary shafts 63 are connected to the corresponding spring support grooves 43 and the back sides of the spring support grooves 47 (see FIG. The upper and lower portions of each rotating shaft 63 come into contact with the two spring clamping surfaces 44 of the spring support groove 43 and the two spring clamping surfaces 48 of the spring support groove 47 (bite into each other), as shown in FIG. (See FIG. 13). Therefore, the backlash in the vertical direction between the front and rear rotating shaft portions 63 and the corresponding spring support grooves 43 and spring support grooves 47 is eliminated.
The lock support spring 62 generates an elastic force that causes the lock pressing portion 66 to rotate counterclockwise around the rotation shaft portion 63 when viewed from the front, so that the rear portion of the lock pressing portion 66 has a spring support groove 74. Attempting to move to the back side (lower right side), the two front and rear portions of the rear portion of the lock pressing portion 66 come into contact with the two spring clamping surfaces 75 of the spring support groove 74 (bite in, see phantom lines in FIG. 9). Therefore, the backlash in the front-rear direction between the lock pressing portion 66 and the spring support groove 74 is removed.
Further, as described above, the lock support spring 62 generates an elastic force that moves the front and rear rotary shaft portions 63 toward the left side, so that the front and rear rotary shaft portions 63 are located on the back side (left side) of the corresponding spring support groove 77. ), And the upper and lower portions of each rotating shaft portion 63 abut (bite into) the two spring clamping surfaces 78 of the spring support groove 77, respectively. Therefore, the backlash in the vertical direction between the lock member 68 and the rotating shaft portion 63 is removed. In addition, since the rotary shaft 63 presses the front and rear cut-and-raised pieces 76 to the left and the lock pressing portion 66 pushes and raises the pieces 73 to the right, there is almost no possibility that the lock member 68 will fall off the lock support spring 62. Absent.

Further, when the upper rail 26, the lock support spring 62, and the lock member 68 are integrated, the lock member 68 is centered on the engaging portion of the rotating shaft portion 63 and the spring supporting groove 77 extending in the front-rear direction. It becomes possible to rotate around 63. Specifically, the lock positions (the positions in FIGS. 5, 6, and 10) in which each lock claw 70 is engaged with the corresponding lock hole 39, and the left side from the lock hole 39 to which each lock claw 70 corresponds. It is possible to rotate between the unlock position (the position shown in FIG. 11) and the escape position.
Further, the lock support spring 62 generates an elastic force that rotates the lock pressing portion 66 counterclockwise when viewed from the front, and the rear portion of the lock pressing portion 66 is the rotation center of the lock member 68 (the rotation shaft portion 63 and the spring support groove 77). Since the spring support groove 74 (cut and raised piece 73) positioned below the engagement portion) is urged to the right side, the lock member 68 is locked when an external force other than the urging force of the lock support spring 62 is not applied. Member 68 is located in the locked position.

The roller unit 79 includes a roller support bracket 80 (bracket) obtained by bending a metal plate into a substantially U-shaped cross section. The roller support bracket 80 includes a substantially horizontal bottom surface portion 81 and a pair of left and right side wall portions 82 extending upward from both left and right edge portions of the bottom surface portion 81. A portion 83 is formed.
In the left and right side wall portions 82, the vicinity of the inner end of the roller support shaft 84 (rotating means) extending in the left and right direction is fixed in a state of passing through the side wall portion 82. The left and right roller support shafts 84 rotatably support through holes formed at the centers of rollers 85 (rotating means) located outside the side wall portions 82.
Further, in the left and right inclined portions 83, the vicinity of the outer end of the cylindrical play removing roller support shaft 86 (support shaft) extending in a direction orthogonal to the inclined portion 83 passes through the inclined portion 83. It is fixed. The axis of the backlash removal roller support shaft 86 is inclined at an angle of 45 ° with respect to the vertical direction (vertical direction) and the horizontal direction (horizontal direction). A circular through-hole 88 formed at the center of the backlash removal roller 87 located inside each inclined portion 83 is rotatably supported on the left and right backlash removal roller support shafts 86. The cross-sectional shape of the outer peripheral portion of the play removing roller 87 made of hard synthetic resin (which may be iron) is an arc shape, and the curvature of the arc of the play removing roller 87 is larger than the curvature of the upper corner portion 21. The inner diameter of the through hole 88 of the play removing roller 87 is slightly larger than the outer diameter of the portion located on the inner side of the inclined portion 83 of the play removing roller support shaft 86. A minute clearance is formed between the outer peripheral surfaces of the removal roller support shaft 86. Therefore, the backlash removal roller 87 is not only rotatable around the backlash removal roller support shaft 86 but also slidable in the axial direction of the backlash removal roller support shaft 86 with respect to the backlash removal roller support shaft 86. .
In the front and rear roller units 79, the inner end of the roller support shaft 84 and a part of the backlash removal roller 87 are positioned inside the corresponding shaft escape hole 37 and the inclined roller escape hole 38, respectively. The upper surface is in contact with the lower surfaces of the outer component plate member 28 and the inner component plate member 55, and the inner surfaces of the left and right side wall portions 82 are in contact with the outer surfaces of the outer upright pieces 29 and the outer upright pieces 56. The upper surfaces of the left and right side walls 82 are fixed to the upper rail 26 by spot welding to the outer surfaces of the upright pieces 29 and the outer upright pieces 56, respectively.
Then, by fixing the front and rear roller units 79 to the upper rail 26, the right upper rail unit 25 is completed.

By inserting the upper rail unit 25 into the inner space of the lower rail 15 from the front end opening or rear end opening of the right lower rail 15, the right rail unit 12 is completed.
When the upper rail unit 25 is inserted into the lower rail 15, each roller 85 comes into contact with the upper surfaces (rotating means support surfaces) of the left and right roller support portions 17 (see FIG. 2), and one point on the peripheral surface of each play removing roller 87. (The maximum diameter portion of the circumferential surface of the play removing roller 87) makes point contact with the corresponding upper corner portion 21 (corner curved surface) (see FIG. 3). The looseness-removing roller 87 is held at a position where it contacts the upper corner 21 and forms a clearance with the inclined portion 83. As a result, the backlash removing roller 87 on the left side of one roller unit 79 receives a diagonally downward force (a force including a rightward component and a downward component) from the corresponding upper corner portion 21, and the right side of one roller unit 79. The backlash removal roller 87 is subjected to a diagonally downward force (a force including a leftward component and a downward component) from the corresponding upper corner 21. Further, the inner upright piece 30 and the inner upright piece 57 are positioned in an opening formed over the entire length of the lower rail 15 in the upper portion of the lower rail 15 (see FIGS. 2 to 4 and FIGS. 10 to 14).

The left rail unit 12 is symmetrical to the right rail unit 12, and the lower rail 15 of the left and right rail units 12 is placed on the floor of the vehicle interior in a state in which the positions of the front end positions (and the rear end positions) of the both are aligned. It is fixed. Further, left and right side portions of the lower surface of the seat cushion of the seat (not shown) are placed on the support pieces 60 of the left and right upper rail units 25 that are aligned in the longitudinal direction of each other, and are provided on the lower surface side of the seat cushion. The four bolts are screwed into the corresponding weld nuts 35 (after passing through the through holes formed in the front support piece 33, the rear support piece 34, and the support piece 60), so that the seat (seat cushion ) Is fixed to the left and right upper rail units 25 (support pieces 60). Further, between the lock members 68 of the left and right upper rail units 25, linkage means (not shown) for synchronizing the movements of both is provided.
When the left and right lock members 68 are positioned at the lock position, the lock claws 70 of the left and right lock members 68 engage with the lock holes 39 and any one of the lock holes 22 (see FIGS. 1 and 10). The sliding operation in the front-rear direction with respect to the left and right lower rails 15 of the rail unit 25 is restricted.
On the other hand, when the passenger rotates the lock member 68 to the unlock position against the urging force of the lock support spring 62 using the operation piece 71, the lock claws 70 of the left and right lock members 68 are moved to the lock hole 39 and the lock hole. Escape from 22 (see FIG. 11). Therefore, when the left and right upper rail units 25 (seats) are pressed forward or backward against the left and right lower rails 15, the upper rail units 25 move to the lower rails 15 while the rollers 85 roll on the corresponding roller support portions 17. Slide forward or backward. Further, the backlash removal roller 87 of each roller unit 79 contacts the corresponding upper corner 21 while rotating around the backlash removal roller support shaft 86, so that the roller unit 79 moves during the sliding operation of the left and right upper rail units 25. There is no backlash in the left-right direction and the up-down direction with respect to the corresponding rail unit 12. Therefore, the upper rail unit 25 can be smoothly slid with respect to the lower rail 15.

As described above, the slide rail device 10 of the present embodiment uses the lock support spring 62 to rotatably mount the lock member 68 with respect to the upper rail 26. Therefore, the number of parts is small and the structure is simple. is there.
Further, when the upper rail 26, the lock support spring 62, and the lock member 68 are integrated, the back and forth rattling between the upper rail 26 and the lock support spring 62 is removed, and the lock support spring 62 and the lock member are removed. The back-and-forth and back-to-back rattling between 68 is removed. Therefore, during the operation of the lock member 68, the lock support spring 62 and the upper rail 26 (spring support groove 43, spring support groove 47, spring support groove 51), or between the lock support spring 62 and lock member 68 (spring support groove 74, spring). There is little risk of noise from between the support grooves 77).

Further, the cut and raised piece 42 having the spring support groove 43, the cut and raised piece 46 having the spring support groove 47, and the cut and raised piece 50 having the spring support groove 51 are integrally formed on the outer component plate-like member 28. The projecting pieces having the spring support groove 43, the spring support groove 47, and the spring support groove 51 are formed separately from the outer constituent plate member 28, and these projecting pieces are fixed to the outer constituent plate member 28. Compared to the structure, the number of parts of the outer constituent plate-like member 28 (upper rail unit 25) can be reduced, and the structure can be simplified.
Further, since the cut-and-raised piece 73 having the spring support groove 74 and the cut-and-raised piece 76 having the spring support groove 77 are formed integrally with the lock member 68, the spring support groove 74 and the spring support groove 77 are provided. Compared to the structure in which the protruding pieces are formed separately from the locking member 68 and these protruding pieces are fixed to the locking member 68, the number of parts of the locking member 68 can be reduced and the structure can be simplified. It is.

Further, since the outer diameter of the tip end portion of the backlash removal roller support shaft 86 (and the whole portion protruding inward from the inclined portion 83) is smaller than the through hole 88 of the backlash removal roller 87 (backlash removal roller support shaft). Since a retaining portion having a diameter larger than that of the through hole 88 is not formed by caulking or the like at the front end portion of the 86, the mounting operation of the backlash removal roller 87 to the backlash removal roller support shaft 86 (assembly work of the slide rail device 10) Is easy.
In addition, since a retaining portion is not formed at the tip of the backlash removal roller support shaft 86, the backlash removal roller 87 can slide relative to the backlash removal roller support shaft 86. Therefore, the follow-up performance of the backlash removal roller 87 with respect to the upper corner portion 21 of the lower rail 15 is good (within a minute range in which the backlash removal roller 87 maintains contact with the upper corner portion 21 with respect to the backlash removal roller support shaft 86. Therefore, the upper rail unit 25 can be smoothly slid with respect to the lower rail 15.
In addition, an external force that moves the backlash removal roller 87 from the upper corner portion 21 to the base end side (the inclined portion 83 side) of the backlash removal roller support shaft 86 is applied to the backlash removal roller 87. The backlash removal roller 87 does not fall off from the front end of the backlash removal roller support shaft 86 even though the retaining portion (having a larger diameter than the through hole 88) is not formed at the front end portion of the support shaft 86. .

Further, since the roller 85 (roller support shaft 84) and the backlash removal roller 87 (backlash removal roller support shaft 86) are provided on the left and right side wall portions 82 of the roller support bracket 80, the left and right rollers 85 and backlash removal are provided. It is possible to attach the roller 87 to the roller support bracket 80 with high positional accuracy without deviating from the design position. Therefore, there is little possibility that the sliding operation of the upper rail unit 25 with respect to the lower rail 15 becomes unsmooth.

Further, the roller support bracket 80 includes a bottom surface portion 81 that crosses the lower surface of the upper rail 26, and a pair of side wall portions 82 that extend upward from both side portions of the bottom surface portion 81 and are fixed (welded) to both side surfaces of the upper rail 26, respectively. The roller support bracket 80 reinforces the upper rail 26 in strength. Therefore, if a vehicle on which the slide rail device 10 is mounted collides with another vehicle, the outer standing piece 29 and the outer standing piece 56 are spread outward with respect to the lower rail 15, and the inner standing piece 30 and the inner standing piece 57 are expanded. Even if a large external force (see the arrow in FIG. 4) is applied, the upper rail 26 is less likely to be (plastically) deformed. Therefore, the possibility that the upper rail unit 25 cannot slide with respect to the lower rail 15 when a vehicle collision or the like occurs can be reduced as compared with the related art. In particular, when a vehicle collides, a larger load is applied to the front end portion or rear end portion of the upper rail 26 than the center portion. However, the front end portion and the rear end portion of the upper rail 26 are connected to each other by the roller support bracket 80 as in this embodiment. When reinforced, the deformation of the upper rail 26 due to a vehicle collision can be effectively prevented.

Further, since the inner end portion of the roller support shaft 84 is accommodated in the shaft escape hole 37 and a part of the backlash removal roller 87 is accommodated in the inclined roller escape hole 38, the upper rail 26 and the roller support bracket 80 are accommodated. It is possible to reduce the width dimension (cross-sectional shape) of the combined body of the roller 85 (roller support shaft 84) and the backlash removal roller 87 (backlash removal roller support shaft 86).

As mentioned above, although this invention was demonstrated based on the said embodiment, this invention can be implemented, giving various deformation | transformation.
For example, the embodiment shown in FIG. 15 can be implemented.
The backlash removal roller support shaft 86 of the upper rail unit 25 of this modification has a through-hole (not shown, the same shape as the through-hole 88) of the backlash removal roller 90 of the same material and shape as the backlash removal roller 87. Are mated. As shown in the drawing, the cross-sectional shape of the outer peripheral portion of the play removing roller 90 is V-shaped, and the maximum diameter portion (vertical portion of the V shape) of the outer peripheral portion of the play removing roller 90 is pointed with respect to the upper corner portion 21. In contact. Therefore, the play removing roller 90 of this modification can also exhibit the same function and effect as the play removing roller 87.

Further, the axis of the backlash removal roller support shaft 86 may be inclined at an angle different from 45 ° with respect to the vertical direction (vertical direction) and the horizontal direction (horizontal direction).
Further, the number of support grooves (spring support grooves 51) formed in the upper rail 26 and the number of locking portions (front-side upward locking pieces 64, rear-side upward locking pieces 65) formed in the lock support spring 62 are as follows. It is good also as three or more.
Further, as a rotation means provided in the upper rail unit 25 (in contact with the roller support portion 17), a means different from the roller support shaft 84 and the roller 85, for example, the upper rail unit 25 is rotatably supported via the rotation support means. A ball (bearing ball) may be used.
Further, a portion other than the inner end of the roller support shaft 84 or a part of the roller 85 may be positioned in the shaft escape hole 37 (a part of the rotation means different from the roller support shaft 84 and the roller 85 may be provided). May be located).
Alternatively, the left and right side wall portions 82 of the roller support bracket 80 may be brought into contact with both side surfaces of the upper rail 26, and the bottom surface portion 81 may be welded to the lower surface of the upper rail 26.
Furthermore, the cross-sectional shape of the upper corner 21 (corner curved surface) may be a curve that approximates an arc.
Further, one of the spring support groove 51 and the spring support groove 74 may be a groove whose front-rear distance is gradually narrowed toward the left side (in this case, the structure of the lock support spring 62 is changed in accordance with the design change). ).
Further, the

backlash removing rollers

87 and 90 may be brought into contact with the side wall portion 18 and the ceiling wall portion 19 so as to be rotatable.

The vehicle slide rail device of the present invention can attach the roller and the backlash removing roller to the upper rail with high positional accuracy, and the upper rail cannot slide with respect to the lower rail even when a large external force is applied to the upper rail. Useful because it is difficult.

DESCRIPTION OF SYMBOLS 10 Slide rail apparatus 12 Rail unit 15 Lower rail 16 Fixed part 17 Roller support part (rotating means support surface)
18 Side wall part 19 Ceiling wall part 20 Hanging piece 21 Upper corner | angular part (corner curved surface)
22 Lock hole 25 Upper rail unit 26 Upper rail 28 Outer component plate member 29 Outer standing piece 30 Inner standing piece 31 Inclined piece 32 Joining piece 33 Front side supporting piece 34 Rear side supporting piece 35 Weld nut 37 Shaft escape hole 38 Inclined roller escape Hole 39 lock hole 41 central through hole 42 cut and raised piece (support piece for vertical movement restriction)
43 Spring support groove (support groove for vertical movement restriction)
44 Spring clamping surface 46 Cut and raised piece 47 Spring support groove 48 Spring clamping surface 50 Cut and raised piece (support piece)
51 Spring support groove (support groove)
52 Spring clamping surface 55 Inner component plate-like member 56 Outer standing piece 57 Inner standing piece 58 Inclined piece 59 Joint piece 60 Support piece 61 Central through hole 62 Lock support spring 63 Rotating shaft part 64 Front upward locking piece (locking part)
65 Rear side upward locking piece (locking part)
66 Lock pressing part (locking side locking part) (rotating biasing part)
68 Lock member 69 Base 70 Lock claw 71 Operation piece 72 Rectangular through hole 73 Cut and raised piece 74 Spring support groove (lock side support groove) (spring contact part)
75 Spring clamping surface 76 Cut and raised piece 77 Spring support groove (rotation support groove)
78 Spring clamping surface 79 Roller unit 80 Roller support bracket (bracket)
81 Bottom face part 82 Side wall part 83 Inclined part 84 Roller support shaft (rotating means)
85 Roller (Rotating means)
86 Roller removal support shaft (support shaft)
87 Backlash removal roller 88 Through hole 90 Backlash removal roller

Claims

A lower rail having a channel shape extending in the front-rear direction and having an upper surface opened, and having a horizontal rotating means supporting surface on the inner surface;
An upper rail inserted into the inner space of the lower rail;
A bracket that has a bottom surface that crosses the lower surface of the upper rail, and a pair of side wall portions that extend upward from both sides of the bottom rail and that are in contact with both side surfaces of the upper rail, and are fixed to the upper rail; ,
Rotating means contacting the corresponding rotating means supporting surfaces, which are rotatably supported on the left and right side walls, respectively.
Support shafts respectively supported on the left and right side wall portions;
A backlash removing roller that is supported by each of the support shafts so as to be rotatable and whose outer peripheral surface is in contact with the lower rail;
A vehicle slide rail device comprising:
In the vehicle slide rail device according to claim 1,
The lower rail includes a corner curved surface located above the rotating means support surface;
The support shaft is inclined with respect to the vertical and horizontal directions;
A slide rail device for a vehicle in which an outer peripheral surface of the play removing roller comes into contact with the corresponding corner curved surface.
In the vehicle slide rail device according to claim 1,
A vehicle slide rail device in which the bracket is fixed to an end portion of the upper rail in a longitudinal direction.
In the vehicle slide rail device according to claim 1,
A vehicular slide rail device in which an inclined roller escape hole is formed in each of both side surfaces of the upper rail to accommodate a part of the corresponding play removing roller.
In the vehicle slide rail device according to claim 1,
A vehicle slide rail device in which a shaft escape hole for accommodating a part of the corresponding rotating means is formed on each of both side surfaces of the upper rail.