JP2021127040A - Seat slide device - Google Patents

Abstract

To provide a structure which can stabilize holding strength when slide is restricted.SOLUTION: At a lower rail 20a, one stopper piece 24a for a front slide restriction position is provided by processing a wall part. At an upper rail 30a, a stopper piece 34a for contacting with the stopper piece 24a to restrict slide of the upper rail 30a when the upper rail 30a slides to the same slide restriction position is provided by processing a wall part. Further, at a lower rail 20b, one stopper piece 24b for the front side slide restriction position is provided by processing a wall part. At an upper rail 30b, a stopper piece 34b for contacting with the stopper piece 24b to restrict slide of the upper rail 30b when the upper rail 30b slides to the same slide restriction position is provided by processing a wall part.SELECTED DRAWING: Figure 3

Description

The present invention relates to a seat slide device for adjusting a vehicle seat back and forth.

Conventionally, as a seat slide device for adjusting the seat for a vehicle back and forth, for example, the seat slide device for a vehicle shown in Patent Document 1 below is known. In this vehicle seat slide device, a pair of front and rear retainers equipped with a plurality of ball-shaped large and small rolling elements are interposed between the lower rail and the upper rail, thereby ensuring smooth relative movement of the upper rail with respect to the lower rail. It is configured to.

Japanese Unexamined Patent Publication No. 2015-083425

By the way, in a seat slide device that slides in the front-rear direction, it is necessary to regulate slides that exceed a predetermined slide range in the front-rear direction. For this reason, in the conventional seat slide device, stopper pieces are provided on the lower rail and the upper rail respectively corresponding to a predetermined slide regulation position, and each stopper piece is attached to the rolling element interposed between the lower rail and the upper rail from the front and rear. By making contact, slide regulation is realized.

However, in the configuration in which the slide regulation is realized by contacting each stopper piece with the rolling element from the front and back, the contact points are scattered because the rolling element with which the stopper piece contacts is spherical, and the contact point is scattered at the time of slide regulation. There is a problem that the holding strength of the material is not stable.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a configuration capable of stabilizing the holding strength at the time of slide regulation.

In order to achieve the above object, the invention of claim 1 described in the claims is
A pair of left and right lower rails fixed to the vehicle body (B) and upper rails fixed to the seat (S) are provided, and the upper rails are slidably assembled with respect to the lower rails in the front-rear direction, and a predetermined slide regulation position is provided. It is a seat slide device (10) whose slide is regulated by
One lower rail (20a) is provided with one first regulation portion (24a, 25a) for the predetermined slide regulation position by processing the wall portion, and one upper rail (30a) is provided with one. When the slide is slid to the predetermined slide regulation position, one second regulation portion (34a, 35a) for restricting the slide by contacting the one first regulation portion is provided by processing the wall portion.
The other lower rail (20b) is provided with one of the other first regulating portions (24b, 25b) by processing the wall portion with respect to the predetermined slide restricting position, and the other upper rail (30b) is provided with one. The other second regulating portion (34b, 35b) for restricting the slide by contacting the other first regulating portion when sliding to the predetermined slide restricting position is provided by processing the wall portion. It is characterized by.
The reference numerals in the parentheses indicate the correspondence with the specific means described in the embodiments described later.

In the invention of claim 1, one lower rail is provided with one first regulation portion for a predetermined slide regulation position by processing a wall portion, and one upper rail is provided with the same predetermined slide. When sliding to the regulation position, one second regulation portion for restricting the slide by contacting with one first regulation portion is provided by processing the wall portion. Further, the other lower rail is provided with one of the other first regulation portions by processing the wall portion with respect to the predetermined slide regulation position, and the other upper rail slides to the same predetermined slide regulation position. At that time, the other second regulating portion for restricting the slide by contacting the other first regulating portion is provided by processing the wall portion.

As a result, when one upper rail and the other upper rail are slid with respect to one lower rail and the other lower rail to the predetermined slide regulation position, one second regulation portion comes into contact with one first regulation portion. At the same time, since the other second regulation part comes into contact with the other first regulation part, it is possible to regulate the slide exceeding the specified slide range. In particular, with respect to one slide regulation position, one lower rail and one upper rail are in contact with one first regulation portion and one second regulation portion, and the other lower rail and the other upper rail are in contact with the other. The first regulation part and the other second regulation part are in contact with each other, and the left and right rails are in contact with each other at one place. The holding strength can be stabilized. This is because in a configuration in which one rail contacts multiple regulatory parts, some of the regulatory parts may not contact due to manufacturing variations. This is because even if there is a variation in manufacturing, the left and right rails are separated from each other, so that the regulating part does not come into contact with each other.

As in the invention of claim 2, one first regulation part is formed by cutting a part of the wall part of one lower rail, and one second regulation part is curved of the wall part of one upper rail. It may be formed by punching out a portion.

As in the invention of claim 3, one first regulating portion is formed by embossing a curved portion of a wall portion of one lower rail, and one second regulating portion is one of the wall portions of one upper rail. It may be formed by cutting up a portion.

In the invention of claim 4, the incision is formed so as to provide an annular opening with respect to the wall portion. When a notch is formed so as to provide an opening that does not form an annular shape with respect to the wall portion, that is, a slit that reaches the outer edge of the wall portion, the strength of the wall portion is lost because the outer edge of the wall portion disappears at the notched portion. Will decrease. On the other hand, by providing a notch so as to provide an annular opening to the wall portion, the notched portion is continuous without losing the outer edge of the wall portion. It is possible to suppress a decrease in strength.

In the invention of claim 5, one lower rail extends inward from the upper end of the bottom wall extending in the sliding direction, the one-side outer wall portion and the other-side outer wall portion facing each other via the bottom wall, and the upper end of the one-side outer wall portion. It is configured to include an inward extension portion on one side in which the tip side hangs down, and an inward extension portion on the other side that extends inward from the upper end of the outer wall portion on the other side and hangs down on the tip end side. Further, one upper rail has an upper wall extending in the sliding direction, one side inner wall portion and another side inner wall portion located between the one side outer wall portion and the other side outer wall portion facing each other via the upper wall, and one. One side outer extension part that extends outward from the lower end of the side inner wall part and the tip side enters the space formed by one side outer wall part and one side inner extension part, and one side outer extension part that extends outward from the lower end of the other side inner wall part The tip side is configured to include an outer extension portion on the other side that enters the space formed by the outer wall portion on the other side and the inner extension portion on the other side. Then, one first regulation part is provided on either one side extension part or the other side extension part, and one second regulation part is one of one side extension part and the other side extension part. It is provided on the side facing the first regulation unit.

As a result, it becomes easier to bring one first regulation part and one second regulation part closer to each other, so that the protrusion length of one first regulation part and the protrusion length of one second regulation part from the wall part are shortened. be able to. For this reason, the stress acting at the time of contact between the two regulating portions with respect to the portion connected to the wall portion of one first regulating portion and the portion connected to the wall portion of one second regulating portion becomes small, so that both regulations caused by the slide regulation are reduced. It is possible to suppress damage to the part.

It is a side view which shows the schematic structure of the seat slide device which concerns on 1st Embodiment. FIG. 2A is a perspective view showing a state in which one lower rail, one and the upper rail are assembled, and FIG. 2B is a perspective view showing a state in which the other lower rail, the other and the upper rail are assembled. It is a figure. FIG. 3A is an explanatory view of a state in which one lower rail, one and the upper rail are assembled, as viewed from the front side, and FIG. 3B is a state in which the other lower rail, the other and the upper rail are assembled. Is an explanatory view seen from the front side. It is a perspective view of one lower rail. 5 (A) is a plan view of one lower rail of FIG. 4, and FIG. 5 (B) is a side view of one of the lower rails of FIG. It is explanatory drawing which enlarges and shows the state which one lower rail of FIG. 4 was seen from the front side. It is a perspective view of one upper rail. 8 (A) is a plan view of one upper rail of FIG. 7, and FIG. 8 (B) is a side view of one of the upper rails of FIG. 7. It is explanatory drawing which enlarges and shows the state which one upper rail of FIG. 7 was seen from the front side. FIG. 10 (A) is an explanatory view of a state in which one lower rail, one and the upper rail are assembled according to a modified example of the present embodiment, and FIG. 10 (B) is a modified view of the present embodiment. It is explanatory drawing which looked at the state which assembled the other lower rail and the other and the upper rail which concerns on an example from the front side.

[First Embodiment]
Hereinafter, the seat slide device according to the first embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, the seat slide device 10 slidably supports the vehicle seat S with respect to the vehicle body B in the front-rear direction (left-right direction in FIG. 1), and mainly includes the vehicle body B. A pair of left and right lower rails 20a and 20b fixed to, a pair of left and right upper rails 30a and 30b fixed to the vehicle seat S and slidably provided to the lower rails 20a and 20b, and an upper rail to the lower rail 20a. A lock member 50a for controlling the slide position of the 30a, a lock member 50b for controlling the slide position of the upper rail 30b with respect to the lower rail 20b, and a slide lock state and a slide lock release state by both lock members 50a and 50b. It is provided with an operation lever 70 for switching operation.

As shown in FIGS. 3A and 3B, steel balls (rolling) held by retainers 40 arranged in the front-rear direction between the lower rail 20a and the upper rail 30a and between the lower rail 20b and the upper rail 30b. Moving objects) 41 and 42 are arranged so as to intervene. By rolling these steel balls 41 and 42, the lower rail 20a and the upper rail 30a and the lower rail 20b and the upper rail 30b can relatively slide in the front-rear direction of the vehicle. The lower rail 20a may correspond to an example of "one lower rail", and the upper rail 30a may correspond to an example of "one upper rail". Further, the lower rail 20b may correspond to an example of "the other lower rail", and the upper rail 30b may correspond to an example of "the other upper rail".

Hereinafter, with respect to the characteristic configuration of the present embodiment, first, the detailed shapes of the lower rail 20a and the lower rail 20b that are paired on the left and right will be described. Since the lower rail 20a and the lower rail 20b are provided at different positions where the stopper pieces described later are provided, the common shape will be described with reference to the drawings by taking the lower rail 20a as an example.

As shown in FIGS. 4 to 6, the lower rail 20a has a bottom wall 21 fixed to the vehicle body B so as to extend in the sliding direction, and one side outer wall portion 22a and the other side outer wall portion 22b facing each other via the bottom wall 21. And one side inward extension 23a extending inward from the upper end of the one side outer wall portion 22a, and the other side inward extension 23b extending inward from the upper end of the other side outer wall portion 22b. It is configured.

The one-side inward extension portion 23a is formed so that its base side extends inward from the upper end of the one-side outer wall portion 22a and extends upward, and its tip end side is curved so as to hang down along the one-side outer wall portion 22a. ing. Further, the other side inward extension portion 23b is curved so that the base side thereof extends inward from the upper end of the other side outer wall portion 22b and extends upward, and the tip end side hangs down along the one side outer wall portion 22a. It is formed. The other side inward extension portion 23b is provided with a plurality of notches 23c that can be engaged with and detached from the lock claws of the lock member 50a at equal intervals (see FIG. 4).

As shown in FIG. 2, the lower rail 20b has a bottom wall 21, a one-side outer wall portion 22a and another side outer wall portion 22b, and one-side inward extension portion 23a and another side inward extension portion 23b, similarly to the lower rail 20a. It is configured to be prepared.

Next, the stopper pieces provided at different positions of the lower rail 20a and the lower rail 20b will be described in detail with reference to the drawings.
In the present embodiment, with respect to the slide in the front-rear direction of the lower rail 20a and the upper rail 30a and the slide in the front-rear direction of the lower rail 20b and the upper rail 30b, the lower rail and the lower rail are used as a regulating part for restricting the slide exceeding the specified slide range. Each of the upper rails is provided with a stopper piece that comes into contact with the upper rail when it slides to a predetermined slide regulation position.

In the lower rail 20a, a stopper piece 24a is formed on the front side portion of the other side inward extension portion 23b so as to cut off a part of the wall portion of the lower rail 20a as a regulating portion for regulating the slide in the forward direction. .. Specifically, the stopper piece 24a is connected to the lower edge of the substantially square annular opening 26a provided for the wall portion so that the portion corresponding to the opening 26a before processing is pushed down toward the other side outer wall portion 22b. Is formed. That is, the stopper piece 24a is formed so as to provide an annular opening 26a with respect to the wall portion of the lower rail 20a.

Further, in the lower rail 20a, an annular opening with respect to the wall portion of the lower rail 20a is performed in the rear portion of the other side inward extension portion 23b as a regulating portion for restricting the slide in the rear direction in the same manner as the stopper piece 24a. A stopper piece 25a is formed so as to provide 26b.

On the other hand, in the lower rail 20b, as shown in FIG. 3B, one of the wall portions of the lower rail 20b is used as a regulating portion for restricting the slide in the forward direction in the front portion of the one-side inward extension portion 23a. The stopper piece 24b is formed so as to cut up the portion. Specifically, the stopper piece 24b is connected to the lower edge of the substantially square annular opening provided for the wall portion so that the portion corresponding to the opening before processing is pushed down toward the one-side outer wall portion 22a. It is formed. That is, the stopper piece 24b is formed so as to provide an annular opening with respect to the wall portion of the lower rail 20b.

Further, in the lower rail 20b, an annular opening with respect to the wall portion of the lower rail 20b is performed in the rear portion of the one-side inward extension portion 23a as a regulating portion for restricting the slide in the rear direction in the same manner as the stopper piece 24b. The stopper piece 25b is formed so as to provide.

The stopper piece 24a and the stopper piece 24b configured in this way are provided on the front side portion of the lower rail 20a and the front side portion of the lower rail 20b, respectively, so that the positions in the front-rear direction (slide direction) are the same. Further, the stopper piece 25a and the stopper piece 25b are provided on the rear side portion of the lower rail 20a and the rear portion of the lower rail 20b so that the positions of the stopper piece 25a and the stopper piece 25b are the same in the front-rear direction. The stopper pieces 24a and 25a may correspond to an example of "one first regulating part", and the stopper pieces 24b and 25b may correspond to an example of "the other first regulating part".

Next, the detailed shapes of the left and right upper rails 30a and the upper rails 30b will be described. Since the upper rail 30a and the upper rail 30b have the same shape, the upper rail 30a will be described as an example with reference to the drawings.

As shown in FIGS. 7 to 9, the upper rail 30a includes an upper wall 31 extending in the sliding direction, one side inner wall portion 32a and the other side inner wall portion 32b, one side outer extension portion 33a and the other side outer extension portion 33b. Is configured to include. The one-side inner wall portion 32a and the other-side inner wall portion 32b hang down from the end portions of the upper wall 31 so as to face each other via the upper wall 31, and when assembled with the lower rail 20a, the one-side outer wall portion 22a and the other-side outer wall portion 22a and the other side outer wall portion. It is formed so as to be located between 22b (see FIG. 3 (A)).

The one-side outer extension 33a is a steel whose base end side is upward from the lower end of the one-side inner wall 32a, extends outward, and rolls with respect to the connecting portion between the bottom wall 21 and the one-side outer wall 22a. It is formed so as to be in sliding contact with the ball 41 (see FIG. 3 (A)). The tip end side of the one-side outer extension portion 33a is curved so as to enter the space formed by the one-side outer wall portion 22a and the one-side inward extension portion 23a, and the one-side outer wall portion 22a and the one-side inner side are curved at the outer edge. It is formed so as to be in sliding contact with a steel ball 42 that rolls with respect to a connecting portion with the extending portion 23a (see FIG. 3A).

The other side outer extension portion 33b is a steel whose base end side is upward from the lower end of the other side inner wall portion 32b, extends outward, and rolls with respect to the connecting portion between the bottom wall 21 and the other side outer wall portion 22b. It is formed so as to be in sliding contact with the ball 41 (see FIG. 3 (A)). The tip side of the other side outer extension portion 33b is curved so as to enter the space formed by the other side outer wall portion 22b and the other side inner extension portion 23b, and the other side outer wall portion 22b and the other side inner side are curved at the outer edge. It is formed so as to be in sliding contact with a steel ball 42 that rolls with respect to a connecting portion with the extending portion 23b (see FIG. 3A).

The other side inner wall portion 32b and the other side outer extension portion 33b are provided with a plurality of notches so as not to come into contact with the lock claws of the lock member 50a in the locked state.

As shown in FIGS. 7 and 8, from the front side of the front-rear central portion of the one-side extension portion 33a and the other-side extension portion 33b, the wall of the upper rail 30a is used as a regulation portion for restricting the slide in the front direction. The stopper pieces 34a and 34b are formed so as to project the curved portion of the portion inward. Further, from the rear side of the central portion in the front-rear direction of the one-side extension portion 33a and the other-side extension portion 33b, the curved portion of the wall portion of the upper rail 30a is inward as a regulation portion for restricting the slide in the rear direction. The stopper pieces 35a and 35b are formed so as to be launched into the air.

The stopper piece 34a is arranged so as to come into contact with the stopper piece 24a of the lower rail 20a when the upper rail 30a slides to the slide restriction position on the front side with respect to the lower rail 20a. Further, the stopper piece 35a is arranged so as to come into contact with the stopper piece 25a of the lower rail 20a when the upper rail 30a slides to the slide restriction position on the rear side with respect to the lower rail 20a.

Like the upper rail 30a, the upper rail 30b is configured to include an upper wall 31, an inner wall portion 32a on one side and an inner wall portion 32b on the other side, and an outer extension portion 33a on one side and an outer extension portion 33b on the other side. (See FIGS. 2 (B) and 3 (B)).

Therefore, in the upper rail 30b, the stopper piece 34b comes into contact with the stopper piece 24b of the lower rail 20b when the lower rail 20b is slid to the slide restriction position on the front side described above. Further, in the upper rail 30b, the stopper piece 35b comes into contact with the stopper piece 25b of the lower rail 20b when the lower rail 20b is slid to the slide regulation position on the rear side described above. The stopper pieces 34a and 35a in the upper rail 30a correspond to an example of "one second regulating part", and the stopper pieces 34b and 35b in the upper rail 30b correspond to an example of "the other second regulating part". Can be.

In the lower rail 20a and the upper rail 30a and the lower rail 20b and the upper rail 30b configured in this way, the slide is restricted at a predetermined slide position by the contact between the stopper pieces as described below.

When the upper rail 30a and the upper rail 30b slide to the slide regulation position on the front side with respect to the lower rail 20a and the lower rail 20b, the stopper piece 34a of the upper rail 30a comes into contact with the stopper piece 24a of the lower rail 20a, and the upper rail 30b The stopper piece 34b of the above comes into contact with the stopper piece 24b of the lower rail 20b. As a result, the slide from the slide regulation position on the front side to the further front side is restricted.

Further, when the upper rail 30a and the upper rail 30b slide to the slide regulation position on the rear side with respect to the lower rail 20a and the lower rail 20b, the stopper piece 35a of the upper rail 30a comes into contact with the stopper piece 25a of the lower rail 20a. The stopper piece 35b of the upper rail 30b comes into contact with the stopper piece 25b of the lower rail 20b. As a result, the slide from the rear side slide restriction position to the further rear side is restricted.

As described above, in the seat slide device 10 according to the present embodiment, the lower rail 20a is provided with one stopper piece 24a for the front slide regulation position by processing the wall portion, and the upper rail 30a is provided with one stopper piece 24a. A stopper piece 34a for restricting the slide by contacting the stopper piece 24a when sliding to the same slide regulation position is provided by processing the wall portion. Further, the lower rail 20b is provided with one stopper piece 24b for the slide regulation position on the front side by processing the wall portion, and the upper rail 30b is provided with the stopper piece 24b when sliding to the same slide regulation position. A stopper piece 34b for restricting the slide by contact is provided by processing the wall portion.

Further, the lower rail 20a is provided with one stopper piece 25a for the rear slide regulation position by processing the wall portion, and the upper rail 30a is provided with the stopper piece 25a when sliding to the same slide regulation position. A stopper piece 35a for restricting the slide by contact is provided by processing the wall portion. Further, the lower rail 20b is provided with one stopper piece 25b with respect to the slide regulation position on the rear side by processing the wall portion, and the upper rail 30b is provided with the stopper piece 25b when sliding to the same slide regulation position. A stopper piece 35b for restricting the slide by contacting the wall portion is provided by processing the wall portion.

As a result, when the upper rail 30a and the upper rail 30b are slid with respect to the lower rail 20a and the lower rail 20b to the slide regulation position on the front side (rear side), the stopper piece 34a (35a) comes into contact with the stopper piece 24a (25a) and the stopper. Since the piece 34b (35b) comes into contact with the stopper piece 24b (25b), it is possible to restrict slides that exceed the specified slide range. In particular, the stopper piece 24a and the stopper piece 34a come into contact with the lower rail 20a and the upper rail 30a with respect to the front slide regulation position (one predetermined slide regulation position), and the stopper piece with the lower rail 20b and the upper rail 30b. Since the 24b and the stopper piece 34b are in contact with each other and the left and right rails are in contact with each other at one place, the holding strength at the time of slide regulation is improved as compared with the configuration in which the stopper pieces (regulating parts) are contacting at a plurality of places with one rail. Can be stabilized. The same applies to the rear slide regulation position. This is because there is a possibility that some of the stopper pieces may not come into contact with each other depending on the manufacturing variation in the configuration where the stopper pieces contact at a plurality of places on one rail. This is because even if there is a variation in manufacturing, the stopper pieces do not come into contact with each other because the left and right rails are separated from each other.

In particular, in the present embodiment, the cut-and-raise forming the stopper pieces 24a, 24b, 25a, 25b is formed so as to provide an annular opening 26a, 26b or the like with respect to the wall portion. When a notch is formed so as to provide an opening that does not form an annular shape with respect to the wall portion, that is, a slit that reaches the outer edge of the wall portion, the strength of the wall portion is lost because the outer edge of the wall portion disappears at the notched portion. Will decrease. On the other hand, by providing a notch so as to provide an annular opening 26a, 26b, etc. to the wall portion to form the stopper pieces 24a, 24b, 25a, 25b, the outer edge of the wall portion is formed at the notched portion. Since it is continuous without disappearing, it is possible to suppress a decrease in the strength of the wall portion due to the provision of the cut-out.

Further, in the present embodiment, the stopper pieces 24a and 25a are provided on the other side inward extension portion 23b, and the stopper pieces 34a and 35a are provided in the space formed by the other side outer wall portion 22b and the other side inward extension portion 23b. It is provided on the other side extension portion 33b that enters. Further, the stopper pieces 24b and 25b are provided on the one-side extension portion 23a, and the stopper pieces 34b and 35b are one-side extension portions that enter the space formed by the one-side outer wall portion 22a and the one-side extension portion 23a. It is provided in 33a.

As a result, as can be seen from FIG. 3A, the stopper pieces 24a, 25a and the stopper pieces 34a, 35a can be easily brought close to each other. The protrusion length can be shortened. Similarly, as can be seen from FIG. 3B, since the stopper pieces 24b and 25b and the stopper pieces 34b and 35b can be easily brought close to each other, the protruding lengths of the stopper pieces 24b and 25b from the wall portion and the stopper pieces 34b and 35b The protrusion length can be shortened. For this reason, the stress acting when both stopper pieces come into contact with each other with respect to the portion connected to the wall portion of the stopper pieces 24a, 24b, 25a, 25b and the portion connected to the wall portion of the stopper pieces 34a, 34b, 35a, 35b becomes small, so that the slide Damage to both stopper pieces due to regulation can be suppressed.

In the present embodiment, the stopper pieces 24a and 25a are formed by cutting a part of the wall portion of the lower rail 20a, and the stopper pieces 24b and 25b are formed by cutting a part of the wall portion of the lower rail 20b. , The stopper pieces 34a, 34b, 35a, 35b are formed by embossing the curved portion of the wall portion of the upper rails 30a, 30b, but the present invention is not limited to this, and each stopper piece is a regulation portion as another regulation portion. It may be formed so as to regulate the slide by contacting with.

For example, the stopper pieces 24a and 25a may be formed by embossing a curved portion of a wall portion of the lower rail 20a. Further, the stopper pieces 24b and 25b may be formed by embossing a curved portion of the wall portion of the lower rail 20b. Further, the stopper pieces 34a, 34b, 35a, 35b may be formed by cutting a part of the upper rails 30a, 30b.

[Other Embodiments]
The present invention is not limited to the above-described embodiment and modifications, and may be embodied as follows, for example.
(1) In the lower rail 20a, the stopper pieces 24a and 25a are provided on the other side inward extension portion 23b, but the present invention is not limited to this, and the stopper pieces 24a and 25a are not limited to this, as in the modified example illustrated in FIG. May be configured to come into contact with the stopper pieces 34b, 35b of the upper rail 30a at the time of the above regulation by providing the one side inward extension portion 23a. In this configuration, the stopper pieces 34b and 35b can correspond to an example of "one second regulating unit". Similarly, in the lower rail 20b, the stopper pieces 24b and 25b are provided on the inward extension portion 23a on one side, but the present invention is not limited to this, and the stopper pieces 24b and 25b are not limited to this, as in the modified example illustrated in FIG. 10B. May be configured to come into contact with the stopper pieces 34a and 35a of the upper rail 30a at the time of the above regulation by providing the inner extension portion 23b on the other side. In this configuration, the stopper pieces 34a and 35a can correspond to an example of "the other second regulating unit".

(2) The seat slide device 10 may be configured to include a lower rail 20a and an upper rail 30a as shown in FIG. 3A and a lower rail 20b and an upper rail 30b as shown in FIG. 10B. However, the lower rail 20a and the upper rail 30a as shown in FIG. 10A and the lower rail 20b and the upper rail 30b as shown in FIG. 3B may be provided.

10 ... Seat slide device 20a ... Lower rail (one lower rail)
20b ... Lower rail (the other lower rail)
21 ... Bottom wall 22a ... One side outer wall part 22b ... Other side outer wall part 23a ... One side inward extension part 23b ... Other side inward extension part 24a, 25a ... Stopper (one of the first regulation parts)
24b, 25b ... Stopper (the other first regulation part)
26 ... Opening 30a ... Upper rail (one upper rail)
30b ... Upper rail (the other upper rail)
31 ... Upper wall 32a ... One side inner wall part 32b ... Other side inner wall part 33a ... One side outer extension part 33b ... Other side outer extension part 34a, 35a ... Stopper (one second regulation part)
34b, 35b ... Stopper (the other second regulation part)

Claims (5)

A pair of left and right lower rails fixed to the vehicle body and upper rails fixed to the seat are provided, and the upper rails are slidably assembled in the front-rear direction with respect to the lower rails, and slide is restricted at a predetermined slide regulation position. It is a seat slide device
One lower rail is provided with one first regulating portion by processing the wall portion with respect to the predetermined slide restricting position, and one upper rail is provided when sliding to the predetermined slide restricting position. One of the second regulating portions for restricting the slide by contacting the one of the first regulating portions is provided by processing the wall portion.
When the other lower rail is provided with one of the other first regulation portions by processing the wall portion with respect to the predetermined slide regulation position, and the other upper rail is slid to the predetermined slide regulation position. A seat slide device, characterized in that the other second regulating portion for restricting the slide by contacting the other first regulating portion is provided by processing the wall portion. The one first regulating portion is formed by cutting out a part of the wall portion of the one lower rail, and the one second regulating portion is formed by embossing a curved portion of the wall portion of the one upper rail. The seat slide device according to claim 1, wherein the seat slide device is formed. The one first regulating portion is formed by punching out a curved portion of the wall portion of the one lower rail, and the one second regulating portion is formed by cutting out a part of the wall portion of the one upper rail. The seat slide device according to claim 1, wherein the seat slide device is formed. The seat slide device according to claim 2 or 3, wherein the cut-up is formed so as to provide an annular opening with respect to the wall portion. The one lower rail extends inward from the bottom wall extending in the sliding direction, the one-side outer wall portion and the other-side outer wall portion facing each other via the bottom wall, and the tip end side hangs down from the upper end of the one-side outer wall portion. It is provided with an inward extension on one side and an inward extension on the other side that extends inward from the upper end of the outer wall on the other side and the tip side hangs down.
The one upper rail has an upper wall extending in the sliding direction, a one-side inner wall portion and another side inner wall portion facing each other via the upper wall and located between the one-side outer wall portion and the other-side outer wall portion. One side outer extension portion extending outward from the lower end of the one side inner wall portion and entering the space formed by the one side outer wall portion and the one side inner extension portion, and the lower end of the other side inner wall portion. It is provided with an outer extension portion on the other side, which extends outward from the outside and enters the space formed by the outer wall portion on the other side and the inner extension portion on the other side.
The one first regulating portion is provided on either one of the one side inward extension portion and the other side inward extension portion, and the one second regulation portion is the one side extension portion and the other side extension portion. The seat slide device according to any one of claims 1 to 4, wherein the seat slide device is provided on the side facing the first regulation unit.

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