JP7024348B2 - Slide device - Google Patents

Description

The present disclosure relates to a sliding device that slidably supports a vehicle seat.

For example, in the invention described in Patent Document 1, a guide member for removing foreign matter is provided in the lower rail. The guide member is fixed to the lower rail by an engaging portion utilizing elastic deformation such as a snap fit.

Japanese Unexamined Patent Publication No. 2014-189218

In the slide device described in Patent Document 1, since the engaging portion penetrates the bottom plate portion of the lower rail, the tip of the engaging portion protrudes from the lower surface of the lower rail. Therefore, in the slide device described in Patent Document 1, the engaging portion and the floor panel interfere with each other. Therefore, in the slide device described in Patent Document 1, it is necessary to secure a gap between the lower surface of the lower rail and the floor panel of the vehicle.

Further, since the engaging portion protrudes from the lower surface of the lower rail, there is a high possibility that the engaging portion will come into contact with other members during transportation of the slide device or the lower rail. If the engaging portion comes into contact with another member, the guide member may fall off the lower rail.

In view of the above points, the present application discloses an example of a slide device capable of exhibiting a foreign matter exclusion function with a configuration different from that of the slide device described in Patent Document 1.

The configuration of the slide device is, for example, as follows.
That is, the slide device includes a fixed rail (11), a movable rail (12), a fastener (13), and the like. The fixed rail (11) is configured to have an open cross-sectional shape with the upper side open. The fixed rail (11) has a first side wall portion (11A) and a second side wall portion (11B) facing each other in a width direction orthogonal to the slide direction of the vehicle seat, and a lower end of the first side wall portion (11A). It has a bottom plate portion (11C) connecting the bottom plate portion (11B) and the lower end portion of the second side wall portion (11B). The first side wall portion (11A), the second side wall portion (11B), and the bottom plate portion (11C) are integrally molded with metal.

The movable rail (12) slides with respect to the fixed rail (11) in a state where at least a part thereof is housed in the fixed rail (11), and the vehicle seat is fixed. The fastener (13) fixes the bottom plate portion (11C), that is, the slide device to the vehicle in a state of penetrating the bottom plate portion (11C).

A bulging portion (14) that bulges upward is provided at a position of the bottom plate portion (11C) that is displaced in the sliding direction with respect to the fastener (13). The bulging portion (14) is an integrally molded portion with the bottom plate portion (11C). Further, through holes (15A, 15B) penetrating the bottom plate portion (11C) are provided on one end side and the other end side in the width direction with the bulging portion (14) interposed therebetween.

As a result, the bulging portion (14) of the slide device can function as a guide member, so that the slide device can exhibit the foreign matter exclusion function. Further, a person who manufactures the fixed rail (11) can perform plastic working such as press working even after the first side wall portion (11A), the second side wall portion (11B) and the bottom plate portion (11C) are integrally molded. The bulging portion (14) can be integrally formed with the bottom plate portion (11C) by processing.

That is, when the first side wall portion (11A) and the second side wall portion (11B) are integrally molded with the bottom plate portion (11C) and then the bulging portion (14) is formed by plastic working, it occurs during the plastic working. There is a risk that the cross-sectional shape of the fixed rail (11) will be significantly deformed due to the plastic flow of the metal material. If the cross-sectional shape of the fixed rail (11) is greatly deformed, the moment of inertia of area changes, so that the bending rigidity of the fixed rail (11) may decrease.

On the other hand, the fixed rail (11) is provided with through holes (15A, 15B) penetrating the bottom plate portion (11C) on one side and the other side in the width direction with the bulging portion (14) interposed therebetween. .. Therefore, since the plastic flow is generally a plastic flow in the slide direction, it is difficult for the plastic flow in the width direction to occur.

Therefore, even if the bulging portion (14) is molded by plastic working after the first side wall portion (11A) and the second side wall portion (11B) are integrally molded with the bottom plate portion (11C), they are fixed. It is suppressed that the cross-sectional shape of the rail (11) is greatly deformed. As a result, the decrease in the bending rigidity of the fixed rail (11) can be suppressed.

Further, since the bulging portion (14) that functions as a guide member is an integrally molded portion that bulges upward from the bottom plate portion (11C), a portion protruding from the lower surface of the fixed rail (11) does not occur. Therefore, it is not necessary to provide a gap between the lower surface of the fixed rail (11) and the floor panel or the like.

The slide device may have the following configuration.
That is, the first through hole (15A) provided on one side in the width direction across the bulging portion (14) and the second through hole provided on the other side in the width direction across the bulging portion (14). The hole (15B) is a long hole-shaped through hole whose major axis direction coincides with the slide direction, and when the dimension of the portion of the bulging portion (14) parallel to the slide direction is the front-back dimension (L1), the hole (15B) is the first. It is desirable that the major axis dimension (L2) of the through hole (15A) of 1 and the major axis dimension (L3) of the second through hole (15B) are equal to or larger than the front-rear dimension (L1) of the bulging portion (14). As a result, when the bulging portion (14) is formed, the generation of plastic flow in the width direction can be reliably suppressed.

Incidentally, the reference numeral in each of the parentheses is an example showing a correspondence relationship with the specific configuration and the like described in the embodiment described later, and the present invention is limited to the specific configuration and the like shown in the reference numeral in the parentheses. It's not something.

It is a figure which shows the vehicle seat which concerns on embodiment. It is a figure which shows the slide device which concerns on embodiment. It is a figure which shows the structure of the fixed rail which concerns on embodiment. It is a figure which shows the structure of the bulging part which concerns on embodiment. It is a perspective view which shows the structure of the bulging part which concerns on embodiment. It is a figure which shows the structure of the bulging part and the through hole which concerns on embodiment.

The following description is an example of an embodiment belonging to the technical scope of the present invention. That is, the matters specifying the invention described in the claims are not limited to the specific configuration, structure, etc. shown in the following embodiments.

At least one member or part described with a reference numeral is provided, unless otherwise specified such as "one". That is, if there is no notice such as "one", two or more of the members may be provided.

The arrows and the like indicating the directions attached to each figure are described for easy understanding of the relationship between each figure, and the present invention is not limited to the direction attached to each figure. .. Each direction means a direction in a state where the vehicle seat according to the present embodiment is assembled to the vehicle.

(First Embodiment)
1. 1. Overview of Vehicle Seats, etc. In this embodiment, an example of the present invention is applied to a vehicle seat mounted on a vehicle. As shown in FIG. 1, the vehicle seat 1 has a seat cushion 3, a seat back 5, and the like. The seat cushion 3 is a portion for supporting the buttocks of the seated person. The seat back 5 is a portion for supporting the back of the seated person.

The sliding device 10 slidably supports the vehicle seat. The slide device 10 is arranged on the right side and the left side in the width direction of the vehicle seat 1. The slide device 10 arranged on the right side in the seat width direction and the slide device 10 arranged on the left side in the seat width direction have substantially the same structure.

2. 2. Slide device The following description is a description of the slide device 10 arranged on the right side in the seat width direction. As shown in FIG. 2, the slide device 10 includes at least a fixed rail 11, a movable rail 12, and the like.

The fixed rail 11 is a member that is directly or indirectly fixed to the vehicle. The movable rail 12 is a member that slides with respect to the fixed rail 11 in a state where at least a part thereof is housed in the fixed rail 11. The vehicle seat 1 is directly or indirectly fixed to the movable rail 12.

As shown in FIG. 3, the fixed rail 11 is a metal member having an open cross-sectional shape with an open upper side. Specifically, the fixed rail 11 has a first side wall portion 11A, a second side wall portion 11B, a bottom plate portion 11C, and the like.

The first side wall portion 11A and the second side wall portion 11B are wall portions facing each other at positions separated from each other in the width direction. The width direction means the sliding direction of the vehicle seat, that is, the direction orthogonal to the longitudinal direction of the fixed rail 11.

The bottom plate portion 11C is a portion connecting the lower end of the first side wall portion 11A and the lower end of the second side wall portion 11B. The first side wall portion 11A, the second side wall portion 11B, and the bottom plate portion 11C are integrally molded with metal.

In the fixed rail 11 according to the present embodiment, the first side wall portion 11A and the second side wall portion 11B are formed substantially at the same time by subjecting the strip material to plastic working such as press working or roll forming. ..

As shown in FIG. 4, the fixing rail 11 is fixed to the vehicle by the fastener 13 penetrating the bottom plate portion 11C. Fasteners 13 are provided at least at two locations on one end side and the other end side in the longitudinal direction of the fixed rail 11 (see FIG. 2).

As shown in FIG. 4, each fastener 13 is configured to have a bolt portion 13A, a first flange portion 13B, a second flange portion 13C, and the like. The bolt portion 13A is a rod-shaped portion on which a male screw is formed.

The first flange portion 13B is a seat portion that comes into contact with a bracket (not shown) for fixing the fixing rail 11 to the vehicle. The second flange portion 13C is a retaining portion that prevents the fixed rail 11 from coming off the fastener 13.

That is, the fastener 13 is fixed to the fixed rail 11 with the bottom plate portion 11C sandwiched between the first flange portion 13B and the second flange portion 13C. The second flange portion 13C is a portion formed by crushing the head portion 13D of the fastener 13 (the portion shown by the alternate long and short dash line in FIG. 4).

That is, the second flange portion 13C is a portion where the head portion 13D is inserted into the through hole 11D (see FIG. 5) provided in the bottom plate portion 11C, and then the head portion 13D is crimped to form a disk shape. be.

As shown in FIG. 4, a bulging portion 14 that bulges upward is provided at a position of the bottom plate portion 11C that is displaced in the sliding direction with respect to the fastener 13. Specifically, the bulging portion 14 is provided at a position shifted from the fastener 13 to the center side in the longitudinal direction of the fixed rail 11.

Note that FIG. 4 shows the rear end side of the fixed rail 11 in the longitudinal direction. The bulging portion 14 shown in FIG. 4 is provided at a position displaced forward in the longitudinal direction from the fastener 13. The bulging dimension H of the bulging portion 14 is substantially the same as the thickness dimension of the second flange portion 13C.

As shown in FIG. 5, the bulging portion 14 is an integrally molded portion with the bottom plate portion 11C. Specifically, the bulging portion 14 is a portion where the first side wall portion 11A, the second side wall portion 11B, and the like are molded, and then the bottom plate portion 11C is pressed and integrally molded into the bottom plate portion 11C. Is.

As shown in FIG. 6, a first through hole 15A and a second through hole 15B are provided on one end side and the other end side in the width direction with the bulging portion 14 interposed therebetween. The two through holes 15A and 15B are holes that penetrate the bottom plate portion 11C.

The two through holes 15A and 15B are holes formed in the bottom plate portion 11C before the bulging portion 14 is formed. Specifically, the two through holes 15A and 15B are punched holes formed into a metal plate by press working or the like before the first side wall portion 11A and the second side wall portion 11B are formed.

The first through hole 15A and the second through hole 15B are oblong hole-shaped through holes whose major axis direction coincides with the slide direction. The major axis dimension L2 of the first through hole 15A and the major axis dimension L3 of the second through hole 15B are equal to or larger than the front-rear dimension L1 of the bulging portion 14.

The front-rear dimension L1 of the bulging portion 14 refers to the dimension of the portion of the bulging portion 14 parallel to the sliding direction, as shown in FIG. In this embodiment, the major axis dimension L2 of the first through hole 15A and the major axis dimension L3 of the second through hole 15B are the same dimension.

3. 3. Features of the slide device according to the present embodiment A bulging portion 14 that bulges upward is provided at a position of the bottom plate portion 11C of the fixed rail 11 that is displaced in the sliding direction with respect to the fastener 13. The bulging portion 14 is an integrally molded portion with the bottom plate portion 11C. Further, two through holes 15A and 15B that penetrate the bottom plate portion 11C are provided on one end side and the other end side in the width direction with the bulging portion 14 interposed therebetween.

As a result, the bulging portion 14 of the slide device 10 can function as a guide member for guiding the foreign matter to the upper part of the second flange portion 13C (see FIG. 4), so that the slide device 10 can exert the foreign matter removing function.

Further, a person who manufactures the fixed rail 11 can make the bulging portion 14 the bottom plate by plastic working such as press working even after the first side wall portion 11A, the second side wall portion 11B and the bottom plate portion 11C are integrally molded. It can be integrally molded with the portion 11C.

That is, when the first side wall portion 11A and the second side wall portion 11B are integrally molded with the bottom plate portion 11C and then the bulging portion 14 is formed by press working, it is fixed by the plastic flow of the metal material generated during the press working. The cross-sectional shape of the rail 11 may be significantly deformed. If the cross-sectional shape of the fixed rail 11 is greatly deformed, the moment of inertia of area changes, so that the bending rigidity of the fixed rail 11 may decrease.

On the other hand, as shown in FIG. 6, the fixed rail 11 is provided with through holes 15A and 15B penetrating the bottom plate portion 11C on one side and the other side in the width direction with the bulging portion 14 interposed therebetween. Therefore, as shown by the arrow in FIG. 6, the plastic flow is generally the plastic flow in the slide direction, so that the plastic flow in the width direction is unlikely to occur.

Therefore, even when the bulging portion 14 is formed by plastic working after the first side wall portion 11A and the second side wall portion 11B are integrally molded with the bottom plate portion 11C, the cross-sectional shape of the fixed rail 11 is greatly deformed. Is suppressed. As a result, the decrease in the bending rigidity of the fixed rail 11 can be suppressed.

Further, since the bulging portion 14 that functions as a guide member is an integrally molded portion that bulges upward from the bottom plate portion 11C, a portion that protrudes from the lower surface of the fixed rail 11 does not occur (see FIG. 4). Therefore, it is not necessary to provide a gap between the lower surface of the fixed rail 11 and the floor panel or the like.

The major axis dimension L2 of the first through hole 15A and the major axis dimension L3 of the second through hole 15B are equal to or larger than the front-rear dimension L1 of the bulging portion 14. As a result, when the bulging portion 14 is formed, the generation of plastic flow in the width direction can be reliably suppressed.

That is, if the major axis dimensions L2 and L3 are smaller than the front-rear dimension L1, there is a possibility that plastic flow in the width direction will occur when the bulging portion 14 is formed. On the other hand, when the major axis dimensions L2 and L3 are equal to or larger than the front-rear dimension L1, the plastic flow in the width direction is blocked by the two through holes 15A and 15B, so that the generation of the plastic flow in the width direction can be suppressed.

(Other embodiments)
In the above-described embodiment, the bulging portion 14 is provided on the rear end side in the longitudinal direction of the fixed rail 11. However, the invention disclosed in the present specification is not limited to this. For example, the bulging portion 14 may be provided on the front end side in the longitudinal direction of the fixed rail 11. In this configuration, the bulging portion 14 is located on the rear side in the longitudinal direction from the fastener 13.

The two through holes 15A and 15B according to the above-described embodiment were elongated holes. However, the invention disclosed in the present specification is not limited to this. That is, for example, the through holes 15A and 15B may be holes of other shapes such as round holes.

The two through holes 15A and 15B according to the above-described embodiment are punched holes by press working, but the invention disclosed in the present specification is not limited thereto. That is, for example, the two through holes 15A and 15B may be through holes formed by drilling.

In the above embodiment, the slide device 10 is applied to the vehicle seat. However, the application of the present invention is not limited to this, and can be applied to seats used for vehicles such as railroad vehicles, ships and aircraft, and stationary seats used for theaters, homes and the like.

Furthermore, the present invention is not limited to the above-described embodiment as long as it conforms to the gist of the invention described in the claims. Therefore, at least two of the plurality of embodiments described above may be combined.

1 ... Vehicle seat 3 ... Seat cushion 5 ... Seat back 10 ... Slide device 11 ... Fixed rail 11A ... 1st side wall 11B ... 2nd side wall 11C ... Bottom plate 11D ... Through hole 12 ... Movable rail 13 ... Fastener 13A ... Bolt part 13B ... 1st flange part 13C ... 2nd flange part 13D ... Head 14 ... Protruding part 15A ... 1st through hole 15B ... 2nd through hole

Claims (2)

In a slide device that slidably supports a vehicle seat,
A fixed rail configured with an open cross-sectional shape with the upper side open, and the first and second metal side walls facing each other in the width direction orthogonal to the sliding direction of the vehicle seat, and the first side wall. A fixed rail that has a metal bottom plate portion that connects the lower end of the portion and the lower end of the second side wall portion, and is an integrally molded product of the first side wall portion, the second side wall portion, and the bottom plate portion. ,
A movable rail that slides with respect to the fixed rail with at least a part of it housed in the fixed rail, and a movable rail to which the vehicle seat is fixed.
Fasteners that penetrate the bottom plate and secure the bottom plate to the vehicle.
In addition to bulging upward, it is provided with a bulging portion that is an integrally molded portion with the bottom plate portion.
The bulging portion is provided at a position deviated from the fastener in the sliding direction.
Through holes penetrating the bottom plate portion are provided on one end side and the other end side in the width direction of the bulging portion, and the first through hole provided on one side in the width direction and the through hole. The second through hole provided on the other side in the width direction across the bulging portion is an oblong hole-shaped through hole whose major axis direction coincides with the slide direction.
Further, when the dimension of the portion of the bulging portion parallel to the sliding direction is the front-back dimension, the major axis dimension of the first through hole and the major axis dimension of the second through hole are the major axis dimension of the bulging portion. A slide device that is larger than the front and rear dimensions . In a metal fixed rail with an open cross-sectional shape with the upper side open,
Two side walls facing each other in the width direction orthogonal to the longitudinal direction,
A bottom plate portion that connects the lower ends of the two side wall portions and is an integrally molded portion with the two side wall portions, and a bottom plate portion.
In addition to bulging upward, it is provided with a bulging portion that is an integrally molded portion with the bottom plate portion.
The bulging portion is provided at a position displaced in the longitudinal direction with respect to the fastener for fixing the bottom plate portion to the vehicle.
Through holes penetrating the bottom plate portion are provided on one end side and the other end side in the width direction of the bulging portion, and the first through hole provided on one side in the width direction and the through hole. The second through hole provided on the other side in the width direction across the bulging portion is an oblong hole-shaped through hole whose major axis direction coincides with the longitudinal direction.
Further, when the dimension of the portion of the bulging portion parallel to the longitudinal direction is taken as the front-back dimension, the major axis dimension of the first through hole and the major axis dimension of the second through hole are the major axis dimension of the bulging portion. Fixed rail that is larger than the front and rear dimensions .

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