JP2012001172A - Slide rail of vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of a slide rail by selecting a thinner sheet metal forming a lower rail while maintaining the strength of movement restricting projections provided to the lower rail.SOLUTION: First cutout holes 43 are formed so as to extend in the sliding direction of an upper rail. Second cutout holes 44 are formed so as to extend from the one hole end parts 431 of the first cutout holes 43 which are positioned on the restriction contact side of the upper rail outward in the rail width direction continuously with the hole end parts 431, respectively. A cutout hole extending outward in the rail width direction is not provided to the other hole end part 432 side of the first cutout hole 43. Consequently, even if the movement restricting projections 40 receive a contact load from the upper rail side, a stress by the contact load can be distributed without allowing a shearing stress to concentrate to bent portions 47.

Description

  The present invention relates to a vehicle seat slide rail for slidably installing a vehicle seat in a vehicle compartment.

A vehicle seat on which a passenger is seated is installed in a vehicle such as an automobile. As this vehicle seat, for example, a vehicle seat configured to be slidable in the front-rear direction like a driver seat is known. Such a vehicle seat is provided with a slide rail at a leg portion. The slide rail includes a lower rail that is fixed to the passenger compartment floor side, and an upper rail that can slide relative to the lower rail and that has the vehicle seat side fixed thereto. The upper rail can slide and move a vehicle seat such as a driver seat in the longitudinal direction of the vehicle interior by sliding relative to the lower rail. The lower rail and the upper rail are formed by appropriately bending a long metal plate, and the upper rail formed in this way is accommodated so as to be slidable with respect to the lower rail. It has become a thing.
By the way, the above-described slide rail is provided with a mechanism for restricting the slide movement of the upper rail with respect to the lower rail so that the slide movement of the upper rail with respect to the lower rail can be within a predetermined slide movement range (for example, Patent Document 1). reference). Specifically, both the lower rail and the upper rail are provided with movement restricting projections that abut against each other at the limit of the above-described slide movement range and restrict relative sliding movement of the upper rail with respect to the lower rail. The movement restricting projections provided on both the lower rail and the upper rail can accommodate the sliding movement of the upper rail with respect to the lower rail within a predetermined sliding movement range, and further, the upper rail is pulled out from the inside of the storage of the stored lower rail. Don't be stupid.

  FIG. 10 is a top view of the lower rail 100 showing the cut holes 102, 103, and 104 for forming the conventional movement restricting convex portion 105. In FIG. 10, a cut and raised piece 106 before bending that serves as the movement restricting convex portion 105 is illustrated. As shown in FIG. 10, the movement restricting convex portion 105 disposed on the lower rail 100 side cuts and raises the lower rail 100 by forming a hole 101 and forms a cut and raised piece 106. The lower rail 100 is formed by bending so as to stand upright. As the cut-and-raised hole 101, one cut hole 102 extending along the slide movement direction of the upper rail (not shown), and two cut holes 103 extending from both end portions of the one cut hole 102 toward the outside in the width direction. , 104 to form a substantially U-shape. The cut-and-raised piece 106 is formed by the cut-and-raised hole 101 (the cut holes 102, 103, and 104) formed in the substantially U-shape. The bent portion 107 when the cut and raised piece 106 is bent is a connecting portion of the cut and raised piece 106 where the cut and raised hole 101 is not provided.

JP 2009-73399 A

When the movement restricting convex portion 105 receives a contact load from the movement restricting convex portion provided on the upper rail when restricting the slide movement, the movement restricting convex portion 105 is sheared by the hit load against the bent portion 107 of the movement restricting convex portion 105. Stress is concentrated. For this reason, in this bent portion, the thickness of the lower rail including the bent portion has to be increased in order to ensure the strength against the shear stress concentration.
However, recently, in order to reduce the weight of the slide rail, there is a demand to make the thickness of the slide rail thinner than the conventional thickness.

  The present invention has been made in view of such circumstances, and the problem to be solved by the present invention is a slide rail for a vehicle seat for slidably installing a vehicle seat in a vehicle interior. Reduce the weight of the slide rail by making it possible to select a metal plate that forms the lower rail that is thinner than the previous one while keeping the strength of the movement restricting projection provided on the lower rail the same as the previous one. Is to plan.

In solving the above-described problems, the slide rail for a vehicle seat according to the present invention employs the following means.
That is, the slide rail for the vehicle seat according to the first aspect of the present invention is a slide rail for the vehicle seat for slidably installing the vehicle seat in the vehicle compartment, and is fixed to the vehicle compartment floor side. A first rail and a second rail that is accommodated in the first rail so as to be slidable relative to the first rail, and the vehicle seat side is fixed to both of the first rail and the second rail. The slide movement exceeding the limit of the second rail with respect to the first rail is regulated by abutting each other at both limit portions which are both ends of the relative slide movement range of the second rail with respect to the first rail. Both movement restricting projections are provided on the first rail so that the movement restricting projections are arranged on both ends of the slide movement range. The first notch is formed by bending using a cut and raised hole provided in the first rail, and the cut and raised hole extends along the direction of sliding movement of the second rail. A hole and a second cut hole extending from the one hole end portion of the first rail in the regulation contact side to the one hole end portion and extending outward in the rail width direction. In the bending process, the portion of the cut-and-raised hole that extends across both the first cut-in hole and the second cut-in hole is erected toward the slide movement side of the second rail. It is characterized by being bent.

According to the slide rail for the vehicle seat according to the first aspect of the invention, the bending process is performed by the first cut hole and the first cut hole extending along the slide movement direction of the second rail among the cut and raised holes. A portion that is connected to both the second notch hole that extends from the one hole end of the second rail to the one end of the second rail and extends to the outside in the rail width direction is set as a bent portion. Therefore, the formed movement restricting convex portion is formed on the hole end portion (the other hole end portion) located on the opposite side to the one hole end portion on the second rail restricting contact side in the first cut hole. In such a case, a cut hole that extends outward in the rail width direction is not provided. Moreover, the bent part of the movement control convex part to be formed will extend in an inclined direction deviated from the direction of the contact load from the second rail side.
As a result, even if the movement restricting convex portion provided on the second rail hits the movement restricting convex portion provided on the first rail and receives a contact load from the second rail side, the bent portion It is possible to disperse the stress of the hit load without concentrating the shear stress on the surface. As a result, even when the thickness of the metal plate forming the first rail is selected to be thinner than before, the strength of the movement restricting convex portion provided on the first rail is changed from the previous one. There can be no strength.
Accordingly, it is possible to select the metal plate forming the first rail with a thinner thickness than before, while making the strength of the movement restricting convex portion provided on the first rail the same as that of the previous one. Thus, the weight of the slide rail can be reduced.

The vehicle seat slide rail according to a second aspect of the present invention is the vehicle seat slide rail according to the first aspect of the present invention, wherein the first cut hole is formed from the end of the one hole on the regulation contact side. As it goes to the other hole end located on the opposite side of the one hole end, it extends obliquely toward the inner side in the rail width direction.
According to the slide rail for the vehicle seat according to the second aspect of the invention, the first cut hole is directed from the one hole end portion on the contact restriction side to the other hole end portion located on the opposite side of the one hole end portion. Therefore, since it extends inclining toward the inner side in the rail width direction, when the movement restricting convex portion is formed by bending, the connection range of the movement restricting convex portion is expanded. Moreover, the bending part of the movement control convex part formed will enlarge the crossing angle with the direction (slide movement direction) of the contact load from the 2nd rail side.
As a result, even if the movement restricting convex portion provided on the second rail hits the movement restricting convex portion provided on the first rail and receives a hit load from the second rail side, this hit load Can be dispersed in the expanded range, and the strength of the movement restricting projection can be further improved.

According to the slide rail of the vehicle seat according to the first invention, the strength of the movement restricting convex portion provided on the first rail is the same as that of the conventional one, but the metal plate forming the first rail is It becomes possible to select a plate thickness thinner than before, and the weight of the slide rail can be reduced.
According to the slide rail of the vehicle seat according to the second invention, the stress of the contact load from the second rail side can be dispersed in the enlarged range, and the strength of the movement restricting convex portion is further improved. Can be made.

It is a side surface mimetic diagram showing typically a vehicular seat slidably installed in a vehicle interior. It is a perspective view which shows the slide rail in an assembly state. It is a perspective view which shows the slide rail in the state made to isolate | separate. It is sectional drawing of the slide rail which shows the IV-IV cross-section arrow in FIG. It is an expanded sectional view expanding and showing about a movement control convex part of a lower rail. It is a top view of the lower rail which shows the cut-and-raised hole (1st form) in forming a movement control convex part. It is a top view of the lower rail which shows the 2nd form different from the cut and raised piece shown in FIG. It is a top view of the lower rail which shows the 3rd form different from the cut-and-raised piece shown in FIG. It is a top view of the lower rail which shows the 4th form different from the cut and raised piece shown in FIG. It is a top view of the lower rail which shows the cut-and-raised hole in forming the conventional movement control convex part.

[First Embodiment]
EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the slide rail of the vehicle seat which concerns on this invention is demonstrated, referring drawings.
FIG. 1 is a schematic side view of a vehicle seat 10 that is slidably installed in a vehicle interior. A vehicle seat 10 shown in FIG. 1 is installed in a vehicle compartment of an automobile or the like. The vehicle seat 10 includes a seat cushion 11 as a seat on which an occupant is seated, a seat back 12 that is a backrest when the occupant is seated on the seat cushion 11, and a head hood when the occupant is seated on the seat cushion 11. The headrest 13 which becomes. The vehicle seat 10 includes a slide rail 20 in order to be slidably installed in the vehicle interior.
As shown in FIG. 1, the vehicle seat 10 is fixedly installed on the passenger compartment floor F by leg brackets 15 as leg portions. Here, a slide rail 20 is disposed between the leg bracket 15 and the frame (not shown) of the seat cushion 11. One leg bracket 15 and one slide rail 20 are provided on each side in the width direction of the vehicle seat 10 that is in the direction intersecting the slide movement direction. Further, the leg brackets 15 are fastened to the passenger compartment floor F by appropriate bolts and nuts, and one leg bracket 15 is disposed on each side of the slide rail 20 in the sliding movement direction.
The slide rail 20 is for enabling the vehicle seat 10 to slide in the vehicle cabin. The slide rail 20 generally includes a lower rail 30 fixed to the passenger compartment floor F side, and an upper rail 50 fixed to the lower rail 30 so as to be relatively slidable and fixed to the vehicle seat 10 side. The lower rail 30 corresponds to the first rail according to the present invention, while the upper rail 50 corresponds to the second rail according to the present invention. Specifically, the lower rail 30 is fixed to the leg bracket 15 fixedly installed on the passenger compartment floor F by appropriate spot welding as described above. On the other hand, as described above, the upper rail 50 is fixed to the frame (not shown) forming the framework of the seat cushion 11 (vehicle seat 10) by appropriate spot welding.

FIG. 2 is a perspective view showing the slide rail 20 in a state where the lower rail 30 and the upper rail 50 are assembled. FIG. 3 is a perspective view showing the slide rail 20 in a state where the lower rail 30 and the upper rail 50 are separated. FIG. 4 is a cross-sectional view of the slide rail 20 showing the IV-IV cross-sectional arrow in FIG.
As shown in FIGS. 2 and 3, the lower rail 30 fixed to the leg bracket 15 accommodates the upper rail 50 fixed to the seat cushion frame (not shown) so as to be relatively slidable. Yes. Therefore, both the lower rail 30 and the upper rail 50 are provided with movement restricting convex portions 40 and 55 so that the relative slide movement of the upper rail 50 with respect to the lower rail 30 is within a predetermined slide movement range. It is installed. The movement restricting convex portion 40 arranged on the lower rail 30 and the movement restricting convex portion 40 arranged on the upper rail 50 are both limit portions which are both ends of the sliding movement range of the upper rail 50 with respect to the lower rail 30. They are in contact with each other. The movement restricting convex portions 40 and 55 of both the lower rail 30 and the upper rail 50 abut against each other at both limit portions which are both ends of the slide movement range, thereby restricting the slide movement exceeding the limit of the upper rail 50 with respect to the lower rail 30. It has become a thing. As shown in FIGS. 2 and 3, the movement restricting convex portion 40 disposed on the lower rail 30 is a total of two pieces arranged in the rail width direction at portions defined as both ends of the slide movement range in the lower rail 30. Four pieces are arranged. On the other hand, as shown in FIGS. 2 and 3, the movement restricting convex portions 55 arranged on the upper rail 50 are a total of two pieces, one on each side, defined as both ends of the slide movement range in the upper rail 50. Is arranged.
As shown in FIG. 4, both the movement restricting convex portions 40 and 55 arranged on both the lower rail 30 and the upper rail 50 are positioned relative to each other at positions where the upper rail 50 and the lower rail 30 are relatively overlapped with each other in the sliding movement direction. is doing. As a result, the upper rail 50 is slid relative to the lower rail 30 so as to abut against each other at both ends of the slide movement range, and the slide movement exceeding the upper rail 50 limit with respect to the lower rail 30 is restricted. It has become. Therefore, the relative slide movement of the upper rail 50 with respect to the lower rail 30 is set within a predetermined slide movement range.
The lower rail 30 and the upper rail 50 are formed by appropriately bending a suitable metal plate and then appropriately bending it, and will be described in detail below.
In addition, since the slide rail 20 is arrange | positioned 1 each on the both sides of the width direction of the vehicle seat 10 as mentioned above, the lower rail 30 demonstrated below is the width direction of the vehicle seat 10 in the width direction. It is configured as a common part that can be used on either side of both sides. For this reason, the movement restricting convex portions 40 to be described next are arranged in pairs that are symmetric with respect to the center line in the rail width direction, at portions defined as both ends of the slide movement range of the lower rail 30. Yes.

First, the upper rail 50 among the slide rails 20 described above will be described. As described above, the frame (not shown) of the seat cushion 11 of the vehicle seat 10 is fixed to the upper rail 50. As shown in FIGS. 2 and 4, the upper rail 50 is bent so that the intermediate portion extending in the longitudinal direction has a U-shape in cross section and the both side portions thereof are folded outward. Has been processed. For this reason, the upper rail 50 has an externally exposed portion on the upper side in the figure formed as a frame mounting portion 51, and both side portions in the drawing are formed as outer folded portions 52 and 52. The frame attachment portion 51 is a portion to which a frame (not shown) of the seat cushion 11 is fixedly attached. The outer folding portions 52 and 52 are accommodated in inner folding portions 32 and 32 of the lower rail 30 described below, and guide the sliding movement of the upper rail 50 with respect to the lower rail 30. The outer folded portions 52 and 52 are formed with a movement restricting convex portion 55 by being appropriately cut and bent and raised appropriately.
Next, the lower rail 30 among the above-described slide rails 20 will be described. The lower rail 30 is fixed to the leg bracket 15 of the passenger compartment floor F as described above. As shown in FIGS. 2 and 4, the lower rail 30 is bent so that an intermediate portion extending in the longitudinal direction has a U-shape in cross section, and both side portions thereof are folded back. Has been processed. For this reason, the lower rail 30 of the lower rail 30 is formed as a leg bracket mounting portion 31, and both sides of the lower rail 30 are formed as inner folded portions 32, 32. The leg bracket attachment portion 31 is a portion that is fixedly attached to the leg bracket 15 that is fixedly installed on the passenger compartment floor F. The inner turn-back portions 32 and 32 are formed with an appropriate storage space, and the outer turn-back portions 52 and 52 of the upper rail 50 described above are slidably stored so that the upper rail 50 slides with respect to the lower rail 30. Guide the movement.

FIG. 5 is an enlarged sectional view showing the movement restricting convex portion 40 of the lower rail 30 in an enlarged manner. FIG. 6 is a top view of the lower rail 30 showing the cut-and-raised hole 42 of the first form for forming the movement restricting convex portion 40. As shown in FIG. 5, a movement restricting convex portion 40 is provided on the leg bracket mounting portion 31 which is the lower bottom portion of the lower rail 30 described above. Two movement restricting convex portions 40 are provided at the limit defining portions of the leg bracket attaching portion 31 so that the movement restricting convex portions 55 of the upper rail 50 can be brought into contact with each other at the limit portions that are the ends of the slide moving range. One set is arranged. The movement restricting convex portions 40 arranged as a set of two pieces are arranged at both ends which are both ends of the slide movement range, and the movement restriction of the upper rail 50 described above at both limit portions. The projecting portion 55 is brought into contact with the lower rail 30 so that the sliding movement exceeding the limit of the upper rail 50 with respect to the lower rail 30 can be restricted.
The movement restricting convex portion 40 is formed by cutting and raising a piece 41 by a cut and raising hole 42 provided in the leg bracket mounting portion 31 of the lower rail 30 and is bent so that the cut and raised piece 41 is raised. Thus, the leg bracket mounting portion 31 of the lower rail 30 is formed.
First, the cut and raised hole 42 provided in the leg bracket attachment portion 31 will be described. As shown in FIG. 6, the cut-and-raised hole 42 is generally provided with a first cut hole 43 extending in one direction, and a second cut hole 44 extending in the crossing direction with the first cut hole 43. The The first cut hole 43 is formed to extend along the slide movement direction of the upper rail 50 with respect to the leg bracket mounting portion 31. On the other hand, the second cut hole 44 extends from the one hole end 431 located on the restriction contact side of the upper rail 50 to the one hole end 431 in the first cut hole 43 and extends outward in the rail width direction. Is formed. The first cut hole 43 and the second cut hole 44 are formed to extend in an orthogonal direction that is a direction intersecting each other. In the first cut hole 43, the other hole end 432 located on the side opposite to the one hole end 431 does not have a cut corresponding to the second cut hole 44 described above. It has become a thing.

Next, of the connecting portions of the leg bracket mounting portion 31 not provided with the above-described cut-and-raised hole 42, a portion connected across both the first cut-out hole 43 and the second cut-out hole 44 (indicated by a broken line in the drawing). About the 47 part shown), it sets as the bending part 47 bent. As a result, a portion surrounded by the bent portion 47 and the cut and raised hole 42 (the first cut hole 43 and the second cut hole 44) is set as the cut and raised piece 41 described above.
As shown in the figure, the bent portion 47 is a line segment extending from a portion near the other hole end 432 of the first cut hole 43 to a portion near the outer hole end 442 of the second cut hole 44. Is set. Here, the bent portion 47 extends in a direction inclined with respect to the sliding movement direction of the upper rail 50 that coincides with the direction of the contact load from the movement restricting convex portion 55 of the upper rail 50.
Further, as the bending process, in a state where the bent portion 47 is appropriately sandwiched, the cut and raised piece 41 portion is bent by appropriately pressing the slide movement side of the upper rail 50. When bending is performed in this manner, as shown in FIG. 5, the bent portion 47 is bent, and the protruding state is such that the cut and raised piece 41 stands up toward the slide movement side of the upper rail 50. Become.

According to the slide rail 20 of the vehicle seat 10 configured as described above, the following operational effects can be achieved.
That is, according to the slide rail 20 of the vehicle seat 10 described above, a cut hole that extends outward in the rail width direction is not provided on the other hole end 432 side of the first cut hole 43, and the bent portion 47 is not provided. Extends in an inclined direction that is different from the direction of the contact load from the upper rail 50 side. Therefore, even if the movement restricting convex portion 55 of the upper rail 50 hits the movement restricting convex portion 40 of the lower rail 30 and the movement restricting convex portion 40 receives a contact load from the upper rail 50 side, the bent portion The stress of the contact load can be dispersed without concentrating the shear stress on 47. As a result, even if the metal plate forming the lower rail 30 is selected to be thinner than before, the strength of the movement restricting convex portion 40 provided on the lower rail 30 is the same as the conventional one. It can be strength. Accordingly, the thickness of the metal plate forming the lower rail 30 can be selected to be thinner than before, while the strength of the movement restricting convex portion 40 provided on the lower rail 30 is the same strength as the conventional one. Thus, the weight of the slide rail can be reduced.

[Second Embodiment]
The cut and raised piece according to the present invention is not limited to the cut and raised piece 41 of the first embodiment described above, and the following configuration may be employed. Hereinafter, the cut and raised pieces 41a, 41b, and 41c having a configuration different from the cut and raised piece 41 of the first embodiment will be described. In addition, about the part comprised the same as said 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.
The cut and raised piece 41a of the second embodiment will be described. FIG. 7 is a top view of the leg bracket mounting portion 31 of the lower rail 30 showing a second raised and raised piece 41a different from the raised and raised piece 41 shown in FIG.
The cut and raised piece 41a of the second embodiment is different from the cut and raised piece 41 of the first embodiment described above with respect to the bent portion 47a. That is, even in the second embodiment, the cut-and-raised hole 42 (the first cut hole 43 and the second cut hole 44) formed in the same manner as in the first embodiment is attached to the leg bracket. The unit 31 is provided. Here, the bent portion 47a of the second embodiment differs from the bent portion 47 of the first embodiment described above from the other hole end portion 432 of the first cut hole 43 to the second portion 47a. It is set by a line segment extending over the outer hole end 442 of the cut hole 44. Therefore, a portion surrounded by the bent portion 47a and the cut and raised hole 42 (the first cut hole 43 and the second cut hole 44) is set as the cut and raised piece 41a.
According to the second embodiment as described above, the bent portion 47a can extend over a longer range than the bent portion 47 of the first embodiment described above. Even when the portion 55 hits the movement restricting convex portion 40a of the lower rail 30, the stress due to the contact load can be dispersed more efficiently.

[Third Embodiment]
Next, the cut and raised piece 41b of the third embodiment having a configuration different from the cut and raised pieces 41 and 41a of the first and second embodiments will be described. In addition, about the part comprised the same as the above-mentioned 1st and 2nd embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. FIG. 8 is a top view of the leg bracket mounting portion 31 of the lower rail 30 showing a third embodiment of the cut and raised piece 41b different from the cut and raised piece 41 shown in FIG.
The cut and raised piece 41b of the third embodiment is different from the cut and raised piece 41a of the second embodiment described above with respect to the cut and raised hole 42b. That is, in the third embodiment, only the arrangement structure of the first cut holes 43b in the cut and raised holes 42b is different. Specifically, the first cut hole 43 of the second embodiment described above is formed so as to extend along the sliding movement direction of the upper rail 50, but the first cut of the third embodiment. As shown in FIG. 8, the hole 43 b extends along the slide movement direction of the upper rail 50, and faces toward the inner side in the rail width direction from the one hole end portion 431 to the other hole end portion 432. It is designed to tilt slightly. For this reason, the bent portion 47b of the third embodiment differs from the bent portion 47a of the second embodiment described above from the other hole end portion 432 of the first cut hole 43b to the second A line segment extending over the outer hole end 442 of the cut hole 44 is set in a longer range. A portion surrounded by the bent portion 47b and the cut and raised hole 42b (the first cut hole 43b and the second cut hole 44) is set as the cut and raised piece 41b.
According to the third embodiment, the first cut hole 43b is inclined toward the inner side in the rail width direction as it goes from the one hole end 431 to the other hole end 432 on the contact restriction side. Therefore, when the movement restricting convex portion 40b is formed by bending, the connection range of the movement restricting convex portion 40 is expanded. Further, the bent portion 47 of the movement restricting convex portion 40 to be formed increases the angle of intersection with the direction of the contact load from the upper rail 50 side (sliding movement direction).
This is a case where the movement restricting convex portion 55 provided on the upper rail 50 hits the movement restricting convex portion 40b provided on the leg bracket mounting portion 31 of the lower rail 30 and receives a contact load from the upper rail 50 side. However, it becomes possible to disperse the stress of the hit load in the enlarged range, and the strength of the movement restricting convex portion 40b can be further improved.
Further, according to the third embodiment, since the bent portion 47b can be set in a longer range as compared with the bent portion 47a of the second embodiment described above, movement restriction of the upper rail 50 is possible. The contact load stress when the convex portion 55 hits the movement restricting convex portion 40b of the lower rail 30 can be more efficiently dispersed.

[Fourth Embodiment]
Next, the cut and raised piece 41c of the fourth embodiment having a configuration different from the cut and raised pieces 41, 41a and 41b of the first to third embodiments will be described. In addition, about the part comprised same as the above-mentioned 1st-3rd embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted. FIG. 9 is a top view of the leg bracket mounting portion 31 of the lower rail 30 showing a fourth raised and raised piece 41c different from the raised and raised piece 41 shown in FIG.
The cut and raised piece 41c of the fourth embodiment is different from the cut and raised piece 41a of the second embodiment described above with respect to the cut and raised hole 42c. That is, in the fourth embodiment, only the arrangement structure of the second cut hole 44c in the cut and raised hole 42c is different. Specifically, the second cut hole 44 in the second embodiment described above is formed so as to extend from the one hole end 431 of the first cut hole 43 to the one hole end 431 and extend outward in the rail width direction. However, as shown in FIG. 9, the second cut hole 44c of the fourth embodiment is inclined toward the upper rail 50 housing side while being inclined from the one hole end 431 of the first cut hole 43 in the rail width direction. It is formed to extend outward. For this reason, the bent portion 47c of the fourth embodiment differs from the bent portion 47a of the second embodiment described above from the other hole end portion 432 of the first cut hole 43 to the second portion 47a. A line segment extending over the outer hole end 442 of the cut hole 44c is set in a longer range. A portion surrounded by the bent portion 47c and the cut and raised hole 42c (the first cut hole 43 and the second cut hole 44c) is set as the cut and raised piece 41c.
According to the fourth embodiment as described above, the bent portion 47c can extend over a longer range than the bent portion 47a of the second embodiment described above. Even when the portion 55 hits the movement restricting convex portion 40c of the lower rail 30, the stress due to the hit load can be dispersed more efficiently.

It should be noted that the vehicle seat slide rail according to the present invention is not limited to the above-described embodiment, and may be configured by appropriately changing the location as follows.
For example, the bending process according to the present invention is not limited to the embodiment described above. For example, when the relative position of the leg bracket 15 with respect to the lower rail 30 is determined, the bending process is performed simultaneously with the positioning process appropriately performed. It may be a bending process.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 11 Seat cushion 12 Seat back 13 Headrest 15 Leg bracket (leg part)
20 Slide rail 30 Lower rail (first rail)
31 Leg bracket mounting part 32 Inner turn part 40, 40a, 40b, 40c Lower rail movement restricting convex part 41, 41a, 41b, 41c Cut and raised piece 42, 42b, 42c Cut and raised hole 43, 43b First cut hole 431 One hole end 432 Other hole end 44, 44c Second cut hole 47, 47a, 47b, 47c Bending portion 50 Upper rail (second rail)
51 Frame mounting part 52 Outer turning part 55 Upper rail movement restricting convex part F Car floor

Claims (2)

A vehicle seat slide rail for slidably installing a vehicle seat in a vehicle compartment,
A first rail that is fixed to the passenger compartment floor, and a second rail that is slidably accommodated on the first rail and is fixed to the vehicle seat side.
Both the first rail and the second rail abut on each other at both limit points which are both ends of the relative sliding movement range of the second rail with respect to the first rail, thereby the first rail. A movement restricting convex portion for restricting sliding movement exceeding the limit of the second rail with respect to
Both of the movement restricting convex portions arranged on the first rail so as to abut on both limit portions which are both ends of the slide movement range use cut and raised holes provided on the first rail. It is formed by bending
The cut-and-raised hole includes a first cut-out hole extending along the direction of sliding movement of the second rail, and one end of the first cut-out hole from one hole end of the second rail on the regulating contact side. A second cut hole that is continuous with the hole end and extends outward in the rail width direction;
In the bending process, a portion of the cut-and-raised hole that extends across both the first and second cut-out holes is erected toward the slide movement side of the second rail. A vehicle seat slide rail characterized by being bent. In the slide rail of the vehicle seat according to claim 1,
The first cut hole inclines toward the inner side in the rail width direction from the one hole end on the regulation contact side toward the other hole end located on the opposite side of the one hole end. A slide rail for a vehicle seat, characterized by being extended.

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