JP2010064717A - Seat sliding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure a required strength, and to further reduce a size, weight, and cost in a seat sliding device in which a cross section of a rail is asymmetric. <P>SOLUTION: A lower rail 1 includes: a bottom wall 10; a sidewall 11; a top wall 12; and a downwardly hanging section 13. An upper rail 2 includes: a standing plate 20; a bottom plate 21; a side plate 22; and a second bottom plate 26. The standing plate 20 includes: a first standing plate 201 vertically provided; and a second standing plate 202 which is provided along the first standing plate 201 and thinner than the first standing plate 201. A rolling body 51 accommodated in a rolling body guide 51a is arranged between the bottom wall 10 and the bottom plate 21. The rolling body guide 51a is regulated near the lower end of the second standing plate 202. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a seat slide device in which an upper rail is provided on a lower rail, a rolling element is disposed between the lower rail and the upper rail, and the upper rail can be moved along the lower rail via the rolling element. The present invention also relates to a seat slide device in which a lock mechanism is provided in association with the upper rail and the lower rail, and the upper rail is locked in a movement prohibited state by the lock mechanism.

  There is a demand for a seat slide device that supports a seat mounted in an automobile so as to be movable back and forth while reducing the size, weight, and cost while ensuring the required strength.

(1) Asymmetry of rail cross section As one method that can meet the demands of miniaturization, weight reduction, and cost reduction, the applicant of the present application has devised a seat slide device having a rail cross section that is asymmetrical. An application has been filed (Japanese Patent Application No. 2008-173033).

(2) Use of a spring as a lock member Another method that can meet the demands for downsizing, weight reduction, and cost reduction is to use a spring formed by bending a linear elastic body as a lock member. it can. For example, there is an apparatus described in JP-A-07-195964 (Patent Document 1).
Japanese Patent Application Laid-Open No. 07-195964

An object of the present invention is to (1) achieve a further reduction in size, weight, and cost while securing a required strength in a seat slide device having a rail cross section that is asymmetrical.
Another object of the present invention is to achieve a further reduction in size, weight, and cost while securing a required strength in a seat slide device that uses a spring as a lock member.

  The present invention is configured as the following [1] to [6]. In addition, the code | symbol attached | subjected in this term (means for solving a subject) and the following term (effect of invention) is for understanding easily, and is not the meaning which limits this invention to the structure of a code | symbol.

[1] Configuration 1
The upper rail 2 is provided on the lower rail 1, and rolling elements 51, 52, 53 are arranged between the lower rail 1 and the upper rail 2, and the upper rail 2 extends along the lower rail 1 via the rolling elements 51, 52, 53. A movable seat slide device,
The lower rail 1 includes a bottom wall portion 10 forming a rail bottom portion, a side wall portion 11 erected upward from one edge of the bottom wall portion 10, and an inner side extending in the rail width direction from the upper end of the side wall portion 11. A ceiling wall portion 12 and a hanging portion 13 suspended from the tip of the ceiling wall portion 12;
The upper rail 2 has a first standing plate 201 provided vertically and the first standing plate 201 provided so that the lower end protrudes downward along the first standing plate 201 lower than the lower end of the first standing plate 201. A standing plate portion 20 that includes a second standing plate 202 that is thinner than the plate 201 and supports the sheet at the top, and a bottom plate portion 21 that extends from the lower end of the first standing plate 201 toward the side wall portion 11 of the lower rail 1. And a side plate portion 22 that is erected upward from the tip of the bottom plate portion 21 and whose tip is positioned in a groove formed by the side wall portion 11, the top wall portion 12, and the hanging portion 13 of the lower rail 1. And
The rolling element 51 accommodated in the rolling element guide 51a is disposed between the bottom wall portion 10 and the bottom plate portion 21, and the rolling element guide 51a is restricted by the vicinity of the lower end of the second standing plate 202.
A seat slide device characterized by that.

[2] Configuration 2
In configuration 1,
The lower rail 1 includes a second side wall portion 16 erected from the other edge of the bottom wall portion 10, and a second top wall portion 17 extending inward in the rail width direction from the tip of the second side wall portion 16. And a second hanging part 18 that is suspended from the tip of the second ceiling wall part 17,
The upper rail 2 includes a second bottom plate portion 26 that extends from the lower end of the second standing plate 202 to the opposite side of the bottom plate portion 21, and stands upward from the tip of the second bottom plate portion 26. A second side plate portion 27 whose tip is positioned in a groove formed by the second side wall portion 16, the second top wall portion 17, and the second hanging portion 18 of the lower rail;
A seat slide device characterized by that.

[3] Configuration 3
A seat slide device that is configured to support the upper rail 2 on the lower rail 1 so as to be movable, and has a lock mechanism associated with the upper rail 2 and the lower rail 1, and locks the upper rail 2 in a movement-inhibited state by the lock mechanism. There,
The lower rail 1 includes a bottom wall portion 10 forming a rail bottom portion, a side wall portion 11 erected upward from one edge of the bottom wall portion 10, and an inner side extending in the rail width direction from the upper end of the side wall portion 11. A ceiling wall portion 12, a hanging portion 13 suspended from the tip of the ceiling wall portion 12, a second side wall portion 16 erected from the other edge of the bottom wall portion 10, and the second side wall portion A second ceiling wall portion 17 extending inward in the rail width direction from the distal end of 16, and a second suspension portion 18 suspended from the distal end of the second ceiling wall portion 17,
The upper rail 2 includes a first upright plate 201 provided vertically and a second upright plate 202 thinner than the first upright plate 201 provided along the first upright plate 201 to support the seat at the upper part. A standing plate portion 20, a bottom plate portion 21 extending from the lower end of the first standing plate 201 to the side wall portion 11 side of the lower rail 1, and the tip of the bottom plate portion 21 erected upward from the tip of the bottom plate portion 21. A side plate portion 22 located in a groove formed by the side wall portion 11 of the lower rail 1, the top wall portion 12, and the hanging portion 13;
The locking mechanism is
Lock through holes 201a, 202a formed in the first and second standing plates 201, 202;
Engaging teeth 13a formed by cutting out the lower end edge of the hanging part 13 in a concavo-convex shape;
A linear elastic body is formed by bending so as to have a base 30 and an engaging portion 31 protruding from the base 30, and the base 30 is on the plate surface of the second upright plate 202 and the first A lock member that is supported at a position higher than the two side wall portions 16 and the second top wall portion 17 and that allows the engagement portion 31 to engage / disengage with the engagement teeth 13a through the lock through holes 201a and 202a. 3 and
Have
The engaging portion 31 is engaged with the engaging teeth 13a by the elastic force of the locking member 3 to lock the upper rail 2 in a movement-inhibited state, and the base portion 30 is pushed down against the elastic force. The seat slide device characterized in that the engaging portion 31 is released from the engaging teeth 13a and unlocked.

[4] Configuration 4
A seat slide device that has an upper rail 92 movably supported on the lower rail 91 and has an upper rail 92 and a lock mechanism associated with the lower rail 91, and locks the upper rail 92 in a movement-inhibited state by the lock mechanism. There,
The lower rail 91 includes a bottom wall portion 910 forming a rail bottom portion, a side wall portion 911 erected upward from one edge of the bottom wall portion 910, and an inner side extending in the rail width direction from the upper end of the side wall portion 911. The ceiling wall portion 912, the hanging portion 913 suspended from the tip of the ceiling wall portion 912, the second side wall portion 916 erected from the other edge of the bottom wall portion 910, and the second side wall portion A second ceiling wall portion 917 extending inward in the rail width direction from the distal end of 916, and a second suspension portion 918 hanging from the distal end of the second ceiling wall portion 917,
The upper rail 92 includes a first standing plate 9201 provided vertically and a second standing plate 9202 that is thinner than the first standing plate 9201 provided along the first standing plate 9201, and supports the seat at the upper part. A standing plate portion 920, a bottom plate portion 921 extending from the lower end of the first standing plate 9201 to the side wall portion 911 side of the lower rail 91, and a tip portion of the bottom plate portion 921 that stands upward from the tip. A side plate portion 922 positioned in a groove formed by the side wall portion 911, the top wall portion 912, and the hanging portion 913 of the lower rail,
The locking mechanism is
A locking through-hole 9201a formed in the first standing plate 9201;
An operating portion through hole 9202a formed at a position higher than the second side wall portion 916 and the second top wall portion 917 of the second standing plate 9202;
Engagement teeth 913a formed by cutting out the lower end edge of the hanging part 913 in a concavo-convex shape;
A linear elastic body is bent so as to have a base 930, an engaging portion 931 protruding from the base 930, and an operation portion 936 protruding from the base 930 to the opposite side of the engaging portion 931. The base portion 930 is sandwiched between the two standing plates 9201 and 9202, the operation portion 936 is led out of the rail through the operation portion through hole 9202a, and the engagement portion 931 is used for the locking. A lock member 93 that can be engaged / disengaged with the engagement teeth 913a through the through-hole 9201a;
Have
The engagement portion 931 is engaged with the engagement teeth 913a by the elastic force of the lock member 93 to lock the upper rail 92 in a movement-inhibited state, and the operation portion 936 is operated against the elastic force to operate the operation portion 936. A seat slide device that is unlocked by being disengaged from the engaging teeth 913a.

[5] Configuration 5
In Configuration 3 or Configuration 4,
The upper rail 2/92 includes a second bottom plate portion 26/926 extending from the lower end of the second standing plate 201/9201 to the side opposite to the bottom plate portion 21/921, and the second bottom plate portion 26/926. 926 stands upward from the tip of the 926, and the tip is in a groove formed by the second side wall portion 16/916, the second top wall portion 17/917, and the second hanging portion 18/918 of the lower rail 1/91. A second side plate portion 27/927 positioned;
A seat slide device characterized by that.

[6] Configuration 6
In claim 2 or claim 5,
The second bottom plate part is narrower than the bottom plate part,
A seat slide device characterized by that.

In Configuration 1, the upper rail 2 is provided on the lower rail 1, and rolling elements 51 and 52 are arranged between the lower rail 1 and the upper rail 2, and the upper rail 2 extends along the lower rail 1 through the rolling elements 51 and 52. The lower rail 1 includes a bottom wall portion 10 forming a rail bottom portion, a side wall portion 11 erected upward from one edge of the bottom wall portion 10, It has a ceiling wall portion 12 extending from the upper end of the side wall portion 11 to the inside in the rail width direction, and a hanging portion 13 hanging from the tip of the ceiling wall portion 12, and the upper rail 2 is provided vertically. A first standing plate 201 and a second standing plate 202 that is thinner than the first standing plate 201 provided so that the lower end protrudes downward along the first standing plate 201 lower than the lower end of the first standing plate 201. Support the seat at the top A standing plate portion 20, a bottom plate portion 21 extending from the lower end of the first standing plate 201 toward the side wall portion 11 of the lower rail 1, and standing upward from the tip of the bottom plate portion 21, the tip of which is the lower rail A rolling plate 51 having a side plate portion 22 positioned in a groove formed by one side wall portion 11, a top wall portion 12, and a hanging portion 13, and housed in a rolling body guide 51 a. Since the seat slide device is arranged between the bottom plate portions 21 and restricts the rolling element guide 51a by the vicinity of the lower end of the second standing plate 202, the seat slide having a rail cross section that is asymmetrical left and right. In the apparatus, further reduction in size, weight and cost can be achieved while ensuring the required strength.
Further, the configuration 2 can give a configuration example in which the configuration 1 is embodied.

  The structure 3 is configured by supporting the upper rail 2 on the lower rail 1 so as to be movable, and has a lock mechanism associated with the upper rail 2 and the lower rail 1, and the upper rail 2 is locked in a movement-inhibited state by the lock mechanism. In the seat slide device, the lower rail 1 includes a bottom wall portion 10 forming a rail bottom portion, a side wall portion 11 standing upward from one edge of the bottom wall portion 10, and an upper end of the side wall portion 11. A ceiling wall portion 12 extending inward in the rail width direction, a hanging portion 13 hanging from the tip of the ceiling wall portion 12, and a second side wall portion 16 standing from the other edge of the bottom wall portion 10. And a second ceiling wall portion 17 extending inward in the rail width direction from the distal end of the second side wall portion 16, and a second suspension portion 18 suspended from the distal end of the second ceiling wall portion 17. The upper rail 2 is provided vertically. A first plate 201, a second plate 202 that is thinner than the first vertical plate 201 provided along the first vertical plate 201, and a sheet plate 20 that supports a sheet at the upper portion, and the first vertical plate. A bottom plate portion 21 extending from the lower end of 201 to the side wall portion 11 side of the lower rail 1, and standing up from the front end of the bottom plate portion 21, the front ends of which are the side wall portion 11 and the top wall portion 12 of the lower rail 1. A side plate portion 22 positioned in a groove formed by the hanging portion 13, and the locking mechanism includes locking through holes 201 a and 202 a formed in the first and second standing plates 201 and 202. The linear elastic body is bent so as to have an engaging tooth 13a formed by cutting out the lower end edge of the hanging portion 13 in an uneven shape, a base portion 30, and an engaging portion 31 protruding from the base portion 30. The base 30 is formed on the plate surface of the second upright plate 202. Thus, the engaging portion 31 is supported at a position higher than the second side wall portion 16 and the second top wall portion 17, and the engaging portion 31 can be engaged / disengaged with the engaging teeth 13a through the locking through holes 201a, 202a. A locking member 3, and the engaging portion 31 is engaged with the engaging teeth 13 a by the elastic force of the locking member 3 to lock the upper rail 2 in a movement-inhibited state. The seat slide device uses a spring as a lock member because the seat 30 is released by unlocking the engaging portion 31 from the engaging teeth 13a by depressing the base 30 against it. However, further reduction in size, weight and cost can be achieved while ensuring the required strength.

The configuration 4 includes the upper rail 92 movably supported on the lower rail 91, and has a lock mechanism associated with the upper rail 92 and the lower rail 91, and the upper rail 92 is locked in a movement-inhibited state by the lock mechanism. In the seat slide device, the lower rail 91 includes a bottom wall portion 910 forming a rail bottom portion, a side wall portion 911 standing upward from one edge of the bottom wall portion 910, and an upper end of the side wall portion 911. A ceiling wall part 912 extending inward in the rail width direction, a hanging part 913 hanging from the tip of the ceiling wall part 912, and a second side wall part 916 standing from the other edge of the bottom wall part 910 A second ceiling wall portion 917 extending inward in the rail width direction from the tip of the second side wall portion 916, and a second suspension portion 918 hanging from the tip of the second ceiling wall portion 917. The above The upper rail 92 includes a first standing plate 9201 provided vertically and a second standing plate 9202 that is thinner than the first standing plate 9201 provided along the first standing plate 9201, and supports the seat at the upper part. A plate portion 920, a bottom plate portion 921 extending from the lower end of the first standing plate 9201 to the side wall portion 911 side of the lower rail 91, and an upright end from the tip of the bottom plate portion 921. A side plate portion 922 positioned in a groove formed by a side wall portion 911, a top wall portion 912, and a hanging portion 913, and the lock mechanism is a through-hole for locking formed in the first standing plate 9201. 9201a, the operation part through hole 9202a formed at a position higher than the second side wall part 916 and the second top wall part 917 of the second upright plate 9202, and the lower end edge of the hanging part 913 are uneven. Notch Engagement base 930a, an engagement portion 931 protruding from the base portion 930, and an operation portion 936 protruding from the base portion 930 to the opposite side of the engagement portion 931. The base 930 is sandwiched between the two standing plates 9201 and 9202, and the operation part 936 is led out of the rail through the operation part through hole 9202a. The engaging portion 931 has a locking member 93 that can be engaged / disengaged with the engaging teeth 913a through the locking through-hole 9201a, and the engaging portion 931 is moved by the elastic force of the locking member 93. By engaging with the engaging teeth 913a to lock the upper rail 92 in a movement-inhibited state, the operating portion 936 is operated against the elastic force to be disengaged from the engaging teeth 913a. Since the seat slide device is characterized in that the lock is released, the seat slide device using a spring that supports the lock member at a part different from the configuration 3 further secures the required strength and further Reduction in size, weight and cost can be achieved.
The configuration 5 can give a configuration example in which the configuration 3 or 4 is embodied.
Further, the configuration 6 can provide a specific example in which the configuration 2 or the configuration 5 is reduced in size and weight.

Embodiments of the present invention will be described below with reference to the drawings.
(1) 1st Embodiment FIG. 1: is sectional drawing (cut by the surface orthogonal to the longitudinal direction of the upper rail 2 and the lower rail 1) which shows the principal part of 1st Embodiment corresponding to the structure 1 and 2 FIG. Note that the locking mechanism that locks the upper rail 2 with respect to the lower rail 1 and prohibits forward / backward movement is not a main part of the configurations 1 and 2, and thus illustration and description thereof are omitted.

  In the seat slide device according to the first embodiment, the upper rail 2 is provided on the lower rail 1, and rolling elements 51, 52, and 53 are arranged in three gaps between the lower rail 1 and the upper rail 2. , 52, 53, the upper rail 2 can be moved along the lower rail 1. Here, for example, an automobile seat is assumed as the seat supported by the present seat slide device arranged on the left and right, and the automobile seat is supported on the pair of left and right upper rails 2.

  The lower rail 1 has a longitudinal shape extending in a direction orthogonal to the paper surface of FIG. The lower rail 1 includes a bottom wall 10 provided as a rail bottom parallel to the floor of the automobile, a side wall 11 erected upward from one edge (the left edge in FIG. 1) of the bottom wall 10, The top wall 12 extends from the upper edge of the side wall 11 in the rail width direction, and the hanging part 13 hangs down from the edge of the top wall 12. Further, the second side wall portion 16 that is obliquely erected from the other edge (the right edge in FIG. 1) of the bottom wall portion 10 and the inner side in the rail width direction obliquely bent by 90 degrees from the edge of the second side wall portion 16. It has the 2nd ceiling wall part 17 extended upwards, and the 2nd hanging part 18 bent at 90 degree | times from the edge of this 2nd ceiling wall part 17, and was hung down diagonally downward. Here, the height of the second side wall portion 16 is sufficiently lower than the side wall portion 11. The lower rail 1 composed of such parts can be manufactured by bending a single metal plate.

  The upper rail 2 has a longitudinal shape extending in a direction orthogonal to the paper surface of FIG. The upper rail 2 has a standing plate portion 20 provided so as to be perpendicular to the floor surface of the automobile when assembled to the lower rail 1. That is, a first upright plate 201 provided vertically and a second upright plate 202 provided along the first upright plate 201 and thinner than the first upright plate 201 are provided, and a sheet (not shown) is provided at the top. It has the standing board part 20 which supports. The first standing plate 201 and the second standing plate 202 are made of the same material (specific gravity). Moreover, although it is piled up closely in the example of illustration, you may be comprised so that a compatible board may have a predetermined | prescribed clearance gap.

  The lower end of the first standing plate 201 is extended to the side wall portion 11 side of the lower rail 1 at an angle of 90 degrees to form the bottom plate portion 21. The front end of the bottom plate portion 21 is erected upward at an angle of 90 degrees to form a side plate portion 22, and the front end side is constituted by the side wall portion 11, the top wall portion 12, and the hanging portion 13 of the lower rail 1. Located in the groove. Further, the most distal portion of the side plate portion 22 is bent obliquely upward so as to go to the hanging portion 13. As described above, as a result of the uppermost portion of the side plate portion 22 being bent obliquely upward so as to go to the hanging portion 13, the space in the groove constituted by the side wall portion 11, the ceiling wall portion 12, and the hanging portion 13 of the lower rail 1 is , And divided into an upper space SU and a lower space SL defined by the oblique frontmost portion.

On the other hand, the lower end of the second upright plate 202 is positioned lower than the lower end of the first upright plate 201. The lower end of the second upright plate 202 is extended to the second side wall portion 16 side of the lower rail 1 at an angle of 90 degrees to form the second bottom plate portion 26. The tip of the second bottom plate portion 26 is bent and extended obliquely upward at an obtuse angle to form a second side plate portion 27, and the tips thereof are the second side wall portion 16 and the second top wall portion 17 of the lower rail 1. And the second drooping portion 18.
In the upper rail 2 composed of these parts, the first upright plate 201 and its extended portion side, and the second upright plate 202 and its extended portion side are each formed by bending one metal plate. Can be manufactured.

  Between the bottom plate portion 21 of the upper rail 2 and the bottom wall portion 10 of the lower rail 1, a roller (rolling member) 51 accommodated in the rolling member guide 51a is disposed. Both sides of the rolling element guide 51a in the rail width direction are regulated by the side wall portion 11 of the lower rail 1 and the second upright plate 202 of the upper rail 2. The first standing plate 201 is thick because it needs to be strong enough to perform functions such as support for the upper rail, but the second standing plate 202 is an auxiliary to the first standing plate 201, and is used for the rolling element guide 51 a. Since it bears an auxiliary function such as regulation, it may be relatively thinner than the first standing plate 201. As the roller 51, two rollers in total, one near the front end and the rear end in the rail longitudinal direction, are used, and the distance between the two rollers is a rolling element guide 51a having a shape extending in the rail longitudinal direction. Is held constant by. The roller 51 functions to receive a vertical force applied to the sheet slide device.

A ball (rolling element) 52 is disposed in the upper space SU defined by the distal end portion of the side plate portion 22 being positioned in the groove surrounded by the side wall portion 11, the ceiling wall portion 12, and the hanging portion 13. The ball 52 is supported by receiving pressing force from the side wall portion 11, the top wall portion 12, and the end portions of the side plate portions 22, and rolls while pushing them back by the drag force, thereby moving the upper rail 2 to the lower rail 1. Move relative to. A total of four balls 52, two near the front end and the rear end in the rail longitudinal direction, are used, and the distance between the balls is fixed by the rolling element guide 52a having a shape extending in the rail longitudinal direction. Is held in.

A ball (rolling element) 53 is disposed in the lower space SL defined by the distal end portion of the side plate portion 22 being positioned in the groove surrounded by the side wall portion 11, the ceiling wall portion 12, and the hanging portion 13. . The ball 53 is supported by receiving a pressing force from the tip portion of the hanging portion 13 and the side plate portion 22 and rolls while pushing them back by the drag force to move the upper rail 2 relative to the lower rail 1. Let Four balls 53 are used, two near the front end and the rear end in the rail longitudinal direction, and the distance between the balls is fixed by a rolling element guide 53a extending in the rail longitudinal direction. Is held in.

As described above, in the seat slide device according to the first embodiment, the bottom plate portion 21 of the upper rail 2 is supported on the bottom wall portion 10 of the lower rail 1 via the roller 51, and the roller 51 is connected to the first standing plate. It is provided between 201 and the side wall part 11. For this reason, since the function of each member such as the second standing plate 202 on the right side (right side in FIG. 1) of the first standing plate 201 becomes auxiliary, the second standing plate 202 is thinner than the first standing plate 201. Can be reduced in weight.

(2) Second Embodiment FIG. 2 is a cross-sectional view showing a main part of a second embodiment corresponding to configurations 3 and 5 (a cross section cut by a plane perpendicular to the longitudinal direction of the upper rail 2 and the lower rail 1). 3 is a perspective view, FIG. 4A is a front view of the main part of FIG. 3 as viewed from the direction of arrow A in FIG. 3, and FIG. 3B is a perspective view of the spring (lock member) 3.

  The configurations of the upper rail 2 and the lower rail 1 and that the rolling elements (rollers 51, balls 52, 53) are arranged between the two rails are the same as in the first embodiment. The second standing plate 202 is thinner than the first standing plate 201 and the reason is the same. For this reason, the description about them is abbreviate | omitted and hereafter, the lock mechanism which is the characteristic structure of 2nd Embodiment, and its effect are demonstrated.

The locking mechanism is formed by cutting out the locking through-hole 202a formed in the second standing plate 202, the locking through-hole 201a formed in the first standing plate 201, and the lower end edge of the hanging portion 13 in an uneven shape. The engagement teeth 13 a, the engagement receiving holes 22 a formed in the side plate portion 22, and the lock member 3 are configured. The number of the locking through holes 202a, 201a and the engagement receiving hole 22a is determined according to the number of the engagement portions 31 of the lock member 3, and their height positions are the same as the engagement teeth 13a.

The lock member 3 is formed by bending a linear elastic body, and includes a base portion 30 and an engagement portion 31 protruding from the base portion 30. The base portion 30 is supported on a plate surface of the second upright plate 202 and at a position higher than the second side wall portion 16 and the second top wall portion 17. That is, both end portions 301 and 301 of the base portion 30 are locked and supported by holding portions 202h and 202h formed by cutting and raising from the plate surface of the second upright plate 202 as illustrated. The engaging portion 31 is inserted into the locking through holes 202a and 201a on the upper rail 2 side, detachably engaged with the engaging teeth 13a on the lower rail 1 side, and further inserted into the engaging receiving hole 22a.
Normally, the engaging portion 31 is engaged with the engaging teeth 13a by the elastic force (spring force) of the lock member 3, and the upper rail 2 is locked in the movement prohibited state. On the other hand, when the base 30 is pushed down against the elastic force (spring force) by an external operation, the engaging portion 31 is detached from the engaging teeth 13a and the lock is released.

When the engaging portion 31 is inserted into the locking through holes 202a and 201a and further inserted into the engaging receiving hole 22a, the tip connecting portion 32 that connects the tips of the adjacent engaging portions 31 and 31 is locked. Each tongue-like portion (202a1, etc.) provided so as to hang down from the inner surface of the upper wall portion of the locking through holes 202a, 201a and the engagement receiving hole 22a by slightly pressing down the member (spring) 30 Is passed through the gap below. Further, when the push-down is released after the insertion, the engaging portion 31 and the tip connecting portion 32 are returned to the upper position by the spring force, and thereafter the tip connecting portion 32 is engaged by the tongue-like portion of the engagement receiving hole 22a. It is stopped to prevent it from coming off. For this reason, a locked state can be maintained reliably. Further, since the tongue-like portion 22a contributes to the lock, the lock can be supported at three points (the upright plate portion 20 on the upper rail side, the hanging portion 13 on the lower rail side, and the side plate portion 22 on the upper rail side). Increases strength.

(3) Third Embodiment FIG. 5 is a cross-sectional view showing a main part of a third embodiment corresponding to configurations 4 and 5 (a cross section cut by a plane perpendicular to the longitudinal direction of the upper rail 92 and the lower rail 91). Figure).
The configuration of the lower rail 91 and the arrangement of the rolling elements between the upper rail 92 and the lower rail 91 are the same as in the first and second embodiments. Also, using a spring formed by bending a linear elastic body as the lock member is substantially the same as in the second embodiment. For this reason, the description about them is omitted, and the configuration of the upper rail 92, the arrangement of the lock mechanism, and the operational effects thereof, which are characteristic configurations of the third embodiment, will be described below.

  The upper rail 92 includes two parallel standing plates 9201 and 9202 provided vertically, and a standing plate portion 920 that supports the sheet at the upper portion, and one standing plate (first standing plate) 9201 of the standing plate portion 920. A bottom plate portion 921 that is bent and extended from the lower end of the lower rail 91 toward the side wall portion 911 side by approximately 90 degrees, and is bent upward by approximately 90 degrees from the front end of the bottom plate portion 921 and the front end thereof is a side wall portion 911 of the lower rail 91. And a side plate portion 922 that is positioned in a groove formed by the top wall portion 912 and the hanging portion 913 and whose tip portion is bent obliquely upward.

Here, the standing plate portion 920 includes a first standing plate 9201 having a stepped portion 92010 and a second standing plate 9202 that is thinner than the first standing plate 9201 and has the stepped portion 92020. The base portion 930 of the lock member 93 is sandwiched in the gap between the compatible plates 9201 and 9202. Since the first upright plate 9201 is a member that functions to support the upper rail 92 and the like, it needs to have a corresponding strength. However, the second upright plate 9202 is an auxiliary member for sandwiching the lock member 93. The first standing plate 9201 is thinner than the first standing plate 9201 and can contribute to weight reduction.

The locking mechanism includes a locking through hole 9201 a formed in the first standing plate 9201 of the upper rail 92, an operation portion through hole 9202 a formed in the second standing plate 9202 of the upper rail 92, and a hanging portion of the lower rail 91. A lock formed by bending and forming a linear elastic body, an engagement tooth 913a formed by cutting out the lower edge of 913 in a concavo-convex shape, an engagement receiving hole 922a formed through the side plate portion 922 of the upper rail 92 And a member (spring) 93.

The lock member 93 includes a base portion 930, an engaging portion 931 protruding from the base portion 930, and an operation portion 936 protruding from the base portion 930 on the opposite side of the engaging portion 931. As described above, the base portion 930 is sandwiched between the first upright plate 9201 of the upper rail 92 and the second upright plate 9202 that is thinner than the first upright plate 9201. That is, holding portions 9201h and 9201h are formed by being cut and raised at two locations on the first standing plate 9201, respectively, toward the second standing plate 9202, and linear holding members are formed on the holding portions 9201h and 9201h. Each end of 93 base 930 is locked.

The operation portion 936 of the lock member 93 is led out of the rail through the operation portion through hole 9202a of the second standing plate 9202. A member such as a lock release handle (not shown) is linked to the lead-out portion, thereby enabling unlocking by an external operation. Since the position (height) of the operation portion through hole 9202a is higher than the second side wall portion 916 and the second top wall portion 917 of the lower rail 91, the vicinity of the operation portion 936 led out from the operation portion through hole 9202a is For example, a member such as an unlocking handle to be linked to the operation unit 936 can be easily attached later, and the degree of freedom in the work process is increased.

The engaging portion 931 of the locking member 93 is engaged with the engaging teeth 913a and the engaging receiving hole 922a through the locking through hole 9201a of the first standing plate 9201, and is supported by the tongue-shaped portion. Is the same as in the second embodiment. Also, the lock / unlock operation is substantially the same as in the second embodiment.

Sectional drawing which shows the principal part of 1st Embodiment. Sectional drawing which shows the principal part of 2nd Embodiment. The perspective view which shows the principal part of 2nd Embodiment. (A) is the front view which looked at the principal part of FIG. 3 from the arrow A direction in FIG. 3, (b) is a perspective view of the spring 3. FIG. Sectional drawing which shows the principal part of 3rd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Lower rail 10 Bottom wall part 11 Side wall part 12 Top wall part 13 Drop part 13a Engagement tooth 16 2nd side wall part 17 Second ceiling wall part 18 Second drop part 2 Upper rail 20 Standing plate part 201 First standing board 201a Lock Through hole 202 Second standing plate 202a Locking through hole 202a1 Tongue 202h Holding portion 21 Bottom plate portion 22 Side plate portion 22a Engagement receiving hole 26 Second bottom plate portion 27 Second side plate portion 3 Lock member (spring)
30 Base 301 End 31 of base 31 Engagement part 32 End connection part 51 Roller (rolling element)
51a Rolling element guide 52 Ball (Rolling element)
52a Rolling element guide 53 Ball (Rolling element)
53a Rolling element guide SU Upper space SL Lower space

Claims (6)

A seat slide device in which an upper rail is provided on the lower rail, a rolling element is disposed between the lower rail and the upper rail, and the upper rail can be moved along the lower rail via the rolling element,
The lower rail includes a bottom wall portion forming a rail bottom portion, a side wall portion standing upward from one edge of the bottom wall portion, and a ceiling wall portion extending inward in the rail width direction from the upper end of the side wall portion. And a hanging part that hangs down from the tip of the top wall part,
The upper rail has a first vertical plate provided vertically and a lower wall than the first vertical plate provided so that the lower end protrudes downward along the first vertical plate lower than the lower end of the first vertical plate. A standing plate portion that includes a second standing plate and supports the seat at the top, a bottom plate portion that extends from the lower end of the first standing plate to the side wall portion of the lower rail, and stands upward from the tip of the bottom plate portion. And a side plate portion whose tip is located in a groove formed by a side wall portion, a top wall portion, and a hanging portion of the lower rail,
A rolling element housed in a rolling element guide is disposed between the bottom wall portion and the bottom plate portion, and the rolling element guide is restricted by the vicinity of the lower end of the second standing plate;
A seat slide device characterized by that. In claim 1,
The lower rail includes a second side wall portion erected from the other edge of the bottom wall portion, a second top wall portion extending inward in the rail width direction from the tip of the second side wall portion, and the second A second hanging part that is suspended from the tip of the top wall part,
The upper rail has a second bottom plate portion extending from the lower end of the second standing plate to the opposite side of the bottom plate portion, and is erected upward from the front end of the second bottom plate portion, and the front end of the lower rail is the lower rail. A second side plate portion positioned in a groove formed by the second side wall portion, the second top wall portion, and the second hanging portion;
A seat slide device characterized by that. A seat slide device comprising a lock mechanism associated with the upper rail and the lower rail, the upper rail being movably supported on the lower rail, and locking the upper rail in a movement-inhibited state by the lock mechanism,
The lower rail includes a bottom wall portion forming a rail bottom portion, a side wall portion standing upward from one edge of the bottom wall portion, and a ceiling wall portion extending inward in the rail width direction from the upper end of the side wall portion. A hanging part that hangs down from the tip of the top wall part, a second side wall part that is erected from the other edge of the bottom wall part, and extends inward in the rail width direction from the tip of the second side wall part A second ceiling wall portion, and a second suspension portion suspended from the tip of the second ceiling wall portion,
The upper rail includes a first standing plate provided vertically and a second standing plate that is thinner than the first standing plate provided along the first standing plate, and a standing plate portion that supports the seat at an upper portion. A bottom plate portion extending from the lower end of the first standing plate toward the side wall portion of the lower rail, and a tip portion of the bottom plate portion extending upward from the tip of the bottom plate portion. And a side plate portion located in a groove constituted by
The locking mechanism is
A locking through-hole formed in the first and second standing plates;
Engagement teeth formed by cutting out the lower end edge of the hanging part in a concavo-convex shape,
A linear elastic body is formed by bending so as to have a base and an engaging portion protruding from the base, and the base is on the plate surface of the second upright plate, and the second side wall and the second A locking member that is supported at a position higher than the two ceiling walls, and wherein the engaging portion can be engaged / disengaged with the engaging teeth through the locking through hole;
Have
The engaging portion is engaged with the engaging teeth by the elastic force of the locking member to lock the upper rail in a movement-inhibited state, and the base portion is pushed down against the elastic force to thereby lower the engaging portion. A seat slide device, wherein the seat slide device is disengaged from the engagement tooth to release the lock. A seat slide device comprising a lock mechanism associated with the upper rail and the lower rail, the upper rail being movably supported on the lower rail, and locking the upper rail in a movement-inhibited state by the lock mechanism,
The lower rail includes a bottom wall portion forming a rail bottom portion, a side wall portion standing upward from one edge of the bottom wall portion, and a ceiling wall portion extending inward in the rail width direction from the upper end of the side wall portion. A hanging part that hangs down from the tip of the top wall part, a second side wall part that is erected from the other edge of the bottom wall part, and extends inward in the rail width direction from the tip of the second side wall part A second ceiling wall portion, and a second suspension portion suspended from the tip of the second ceiling wall portion,
The upper rail includes a first vertical plate provided vertically and a second vertical plate that is thinner than the first vertical plate provided along the first vertical plate, and a vertical plate portion that supports the seat at an upper portion. A bottom plate portion extending from the lower end of the first standing plate toward the side wall portion of the lower rail, and a tip portion of the bottom plate portion extending upward from the tip of the bottom plate portion. And a side plate portion located in a groove constituted by
The locking mechanism is
A locking through-hole formed in the first standing plate;
A through hole for an operation part formed at a position higher than the second side wall part and the second top wall part of the second standing plate;
Engagement teeth formed by cutting out the lower end edge of the hanging part in a concavo-convex shape,
A linear elastic body is formed by bending so as to have a base, an engaging part protruding from the base, and an operation part protruding from the base to the opposite side of the engaging part, and the base It is sandwiched between the two standing plates, the operation part is led out of the rail through the operation part through hole, and the engagement part can be engaged / disengaged with the engagement tooth through the lock through hole. A locking member,
Have
The upper rail is locked in a movement-inhibited state by engaging the engagement portion with the engagement teeth by the elastic force of the lock member, and the operation portion is operated against the elastic force to be detached from the engagement teeth. The seat slide device is characterized in that the lock is released by making it happen. In claim 3 or claim 4,
The upper rail has a second bottom plate portion extending from the lower end of the second standing plate to the opposite side of the bottom plate portion, and is erected upward from the front end of the second bottom plate portion, and the front end of the lower rail is the lower rail. A second side plate portion positioned in a groove formed by the second side wall portion, the second top wall portion, and the second hanging portion;
A seat slide device characterized by that. In claim 2 or claim 5,
The second bottom plate part is narrower than the bottom plate part,
A seat slide device characterized by that.

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