JP2022163409A - Vehicular seat - Google Patents

Abstract

To provide an example of a vehicular seat that is provided with a mechanism which supports a rotating member rotatably and can suppress occurrence of rattling.SOLUTION: A hinge mechanism 10 comprises a washer 14 in an annular shape, arranged between a fixed member 11 and a rotating member 12, through which a connection tool 13 is penetrated, and exerting elastic force in a direction in which the rotating member 12 is separated with respect to the fixed member 11. The connection tool 13 has a small-diameter part 13A penetrating through the fixed member 11 and a large-diameter part 13B penetrating through the washer 14 and larger in diameter than the small-diameter part 13A. The fixed member 11 is provided with a recessed part 11A recessed in a direction in which the part is separated from the rotating member 12, through which the connection tool 13 is penetrated in the recessing direction. Further, at least a portion of the large-diameter part 13B is positioned in the recessed part 11A, and a position of the fixed member 11 with respect to the rotating member 12 is set by the large-diameter part 13B.SELECTED DRAWING: Figure 6

Description

TECHNICAL FIELD The present disclosure relates to a vehicle seat mounted on a vehicle.

For example, in the invention described in Patent Document 1, an anchor plate is rotatably connected to a back bracket via a stepped bolt. A gap is provided between the back bracket and the anchor plate, and a wave washer (also referred to as a "wave washer") is arranged in the gap.

Further, in the invention, the small-diameter portion of the stepped bolt penetrates the wave washer, the wave washer is sandwiched between the large-diameter portion of the stepped bolt and the back bracket, and the large-diameter portion engages the anchor plate. A gap is provided through and between the wave washer and the anchor plate.

JP 2015-3575 A

In the invention described in Patent Document 1, since a gap is provided between the wave washer and the anchor plate, the anchor plate is configured to be displaceable between the wave washer and the head of the stepped bolt. Therefore, in the invention described in Patent Document 1, rattling occurs in the anchor plate.

In view of the above points, the present disclosure discloses an example of a vehicle seat that includes a mechanism that rotatably supports a rotating member and that is capable of suppressing rattling.

A vehicle seat mounted on a vehicle desirably has, for example, at least one of the following constituent requirements.

That is, the constituent elements are a fixed member (11), a rotating member (12), and a connector (13) that rotatably connects the rotating member (12) to the fixed member (11), A rod-shaped connector (13) passing through (11) and the rotating member (12), and an annular washer disposed between the fixed member (11) and the rotating member (12) and penetrated by the connector (13) (14) It is provided with a washer (14) exerting an elastic force in a direction to separate the rotating member (12) from the fixed member (11).

As a result, the washer (14) associated with the vehicle seat is arranged between the fixed member (11) and the rotating member (12) in an orientation that separates the rotating member (12) from the fixed member (11). , it is possible to suppress the rattling of the rotating member (12) with respect to the fixed member (11).

By the way, when the vehicle seat is assembled, if the washer (14) is attached to the large-diameter portion (13B) of the connector (13) and the first member (11) as in the invention described in Patent Document 1, In the sandwiched state, a gap is generated between the washer (14) and the second member (12), so rattling cannot be suppressed. The first member (11) refers to one of the fixed member (11) and the rotating member (12). The second member (12) refers to the other member.

On the other hand, in the vehicle seat, the connector (13) has a small diameter portion (13A) passing through the first member (11), a diameter larger than that of the small diameter portion (13A), and a washer (14). One of the first member (11) and the second member (12) (11) has a large diameter portion (13B) that penetrates the A recessed portion (11A) that is recessed in the direction of the recessed portion (11A) through which the connector (13) penetrates is provided. and the position of one member (11) with respect to the other member (12) is determined by the large diameter portion (13B).

Therefore, the position of the rotating member (12) relative to the fixed member (11) is determined by the large diameter portion (13B), and the washer (14) is held at a position corresponding to the large diameter portion (13B). Therefore, when the vehicle seat is assembled, the washer (14) can be reliably prevented from being caught between the large-diameter portion (13B) and the first member (11). The rattling of the rotating member (12) with respect to the can be reliably suppressed.

It should be noted that "the position of the one member (11) with respect to the other member (12) is determined by the large diameter portion (13B)" means, for example, the bottom of the recess (11A), that is, the one member (11) The state in which the large diameter portion (13B) is in direct contact with , or the state in which the large diameter portion (13B) is in indirect contact with one member (11) via a spacer such as a spacer. Say.

Incidentally, the symbols in each parenthesis above are examples showing the correspondence with the specific configurations and the like described in the embodiments described later, and the present disclosure is not limited to the specific configurations and the like indicated by the symbols in the parentheses. .

It is a figure showing a vehicle seat concerning a 1st embodiment. It is a figure which shows the hinge mechanism which concerns on 1st Embodiment. It is a figure which shows the hinge mechanism which concerns on 1st Embodiment. It is a figure which shows the hinge mechanism which concerns on 1st Embodiment. It is a figure which shows the hinge mechanism which concerns on 1st Embodiment. It is a figure which shows the hinge mechanism which concerns on 1st Embodiment.

The following "embodiment of the invention" shows an example of an embodiment belonging to the technical scope of the present disclosure. In other words, the matters specifying the invention described in the claims are not limited to the specific configurations, structures, etc. shown in the following embodiments.

The present embodiment is a seat mounted in a vehicle such as a vehicle, and is an example in which the vehicle seat according to the present disclosure is applied to a seat used as a rear seat of a four-seat or five-seat vehicle. Directional arrows, oblique lines, etc. in each drawing are provided to facilitate understanding of the relationship between the drawings and the shapes of members or parts.

Therefore, the vehicle seat is not limited to the directions shown in each drawing. The direction shown in each drawing is the direction in which the vehicle seat according to the present embodiment is assembled to the vehicle. Figures with hatching do not necessarily show cross-sectional views.

At least one member or portion described with at least a reference numeral is provided unless otherwise specified as "one" or the like. In other words, two or more members may be provided unless there is a notice such as "one". The vehicle seat shown in the present disclosure comprises at least components such as the members or parts labeled and described, as well as the structural parts shown.

(First embodiment)
<1. Overview of vehicle seats>
A rear vehicle seat 1 according to the present embodiment includes at least a seat cushion 3, a seat back 5, and the like, as shown in FIG. The seat cushion 3 is a part for supporting the buttocks of the seated person. The seat back 5 is a part for supporting the back of the seated person.

The back frame body 5A is fixed to a vehicle body (not shown) via a hinge mechanism 10, as shown in FIG. The seat cushion 3 is directly or indirectly fixed to the vehicle body.

The back frame main body 5A is a part of the seat back frame forming the skeleton of the seat back 5. As shown in FIG. In addition, the seatback frame includes a back frame main body 5A, a movable bracket, and the like.

<2. Hinge Mechanism>
<2.1 Outline of Hinge Mechanism>
As shown in FIGS. 3 and 4, the hinge mechanism 10 includes at least a fixed member 11, a rotating member 12, a connector 13, a washer 14, and the like. The fixed member 11 according to the present embodiment is composed of an immovable fixed bracket fixed to the vehicle body.

The rotating member 12 rotates or swings between a first position and a second position. A back frame main body 5A is fixed to the rotating member 12 via fasteners such as bolts. That is, the rotating member 12 is a movable bracket that forms part of the seatback frame.

The first position is the position indicated by the solid line in FIG. 3, where the seat back 5 is in a substantially upright position. The second position is a position indicated by a two-dot chain line in FIG. 3, and is a position where the seat back 5 is laid forward.

The connector 13 is a rod-shaped connecting pin that rotatably connects the rotating member 12 to the fixed member 11, as shown in FIG. The connector 13 penetrates through the fixed member 11 and the rotating member 12 .

The washer 14 is an annular washer disposed between the fixed member 11 and the rotating member 12 and through which the connector 13 penetrates. The washer 14 exerts an elastic force in a direction to separate the rotating member 12 from the fixed member 11 . The washer 14 according to the present embodiment is a wave washer (also referred to as a wave washer) having a wave shape.

<2.2 Detailed Configuration of Connectors and Their Peripheries>
The connector 13 is a stepped pin provided with a small diameter portion 13A and a large diameter portion 13B, as shown in FIG. The small-diameter portion 13A is a columnar or cylindrical portion penetrating through a through hole provided in the fixing member 11 .

The large-diameter portion 13B has a larger diameter than the small-diameter portion 13A, and is a columnar or cylindrical portion extending through through holes provided in the washer 14 and the rotating member 12 . A brim-shaped flange portion 13C provided on the large-diameter portion 13B side and a brim-shaped flange portion 13D provided on the small-diameter portion 13A side serve as retaining portions for the coupler 13. FIG.

Incidentally, the small-diameter portion 13A, the large-diameter portion 13B, and the flange portion 13C are parts integrally formed by machining such as cutting or plastic working such as cold forging. The flange portion 13D is a portion formed by plastic working such as caulking after the connecting tool 13 is inserted into the fixed member 11 and the rotating member 12 .

The fixed member 11 is provided with a concave portion 11A. The recessed portion 11A is a portion recessed in a direction away from the rotating member 12 (upward in FIG. 6), and the connector 13 penetrates in the recessed direction (vertical direction in FIG. 6).

That is, a through hole through which the small-diameter portion 13A penetrates is provided in the recess 11A. The concave portion 11A according to the present embodiment is a portion formed by subjecting the fixed member 11 to plastic working such as press working.

At least part of the large-diameter portion 13B is positioned within the recess 11A, and the position of the fixed member 11 with respect to the rotating member 12 is determined by the large-diameter portion 13B. That is, in the present embodiment, the fixed member 11 is positioned with respect to the rotary member 12 by the direct contact of the large diameter portion 13B with the concave portion 11A.

<3. Features of Vehicle Seat (Particularly, Hinge Mechanism) According to Present Embodiment>
The hinge mechanism 10 according to this embodiment includes a washer 14 . The washer 14 is disposed between the fixed member 11 and the rotating member 12, is an annular washer through which the connector 13 penetrates, and exerts an elastic force in the direction of separating the rotating member 12 from the fixed member 11. do.

As a result, the washer 14 is arranged between the fixed member 11 and the rotating member 12 and exerts an elastic force in a direction to separate the rotating member 12 from the fixed member 11 . rattling can be suppressed.

By the way, when the vehicle seat 1 is assembled, if the washer 14 is sandwiched between the large-diameter portion 13B of the connector 13 and the fixing member 11 as in the invention described in Patent Document 1, the washer Since a gap is generated between 14 and rotating member 12, rattling cannot be suppressed.

On the other hand, the connector 13 related to the hinge mechanism 10 has a small diameter portion 13A passing through the fixing member 11 and a large diameter portion 13B having a larger diameter than the small diameter portion 13A and passing through the washer 14. there is

The fixing member 11 is provided with a recess 11A that is recessed in a direction away from the rotating member 12 and through which the connector 13 penetrates in the direction of recess. Furthermore, at least a portion of the large diameter portion 13B is positioned within the recess 11A, and the position of the fixed member 11 with respect to the rotating member 12 is determined by the large diameter portion 13B.

Therefore, the position of the rotary member 12 relative to the fixed member 11 is determined by the large diameter portion 13B, and the washer 14 is held at a position corresponding to the large diameter portion 13B. Therefore, when the hinge mechanism 10 is assembled, the washer 14 can be reliably prevented from being caught between the large-diameter portion 13B and the fixed member 11, so that the rotary member 12 does not rattle with respect to the fixed member 11. can be reliably suppressed.

(Other embodiments)
In the above-described embodiment, the large diameter portion 13B determines the position of the fixed member 11 with respect to the rotary member 12 by directly contacting the concave portion 11A. However, the present disclosure is not so limited.

That is, according to the disclosure, for example, the position of the fixed member 11 with respect to the rotating member 12 is determined by the large diameter portion 13B, which indirectly contacts the concave portion 11A via a flat washer or the like. There may be.

In the above-described embodiment, the small-diameter portion 13A penetrates through the fixed member 11 and the large-diameter portion 13B penetrates through the rotating member 12 . However, the present disclosure is not so limited. That is, the disclosure may be configured such that, for example, the small-diameter portion 13A penetrates the rotating member 12 and the large-diameter portion 13B penetrates the fixed member 11 .

In the above-described embodiment, the fixing member 11 is provided with the recess 11A. However, the present disclosure is not so limited. That is, the disclosure may be, for example, a configuration in which the rotary member 12 is provided with the concave portion 11A.

The washer 14 according to the embodiment described above was a wave washer. However, the present disclosure is not so limited. That is, according to the disclosure, the washer 14 may be constructed of, for example, a spring washer, a bending washer, a disc spring, or the like.

In the embodiment described above, the present disclosure is applied to the hinge mechanism 10 of the seat back 5 . However, the present disclosure is not so limited. That is, the disclosure is applicable to other hinge mechanisms, for example.

In the embodiment described above, the vehicle seat according to the present disclosure is applied to the vehicle. However, the application of the invention disclosed herein is not so limited. That is, the disclosure is applicable to, for example, seats used in vehicles such as railroad cars, ships, and aircraft, as well as stationary seats used in theaters, homes, and the like.

Furthermore, the present disclosure is not limited to the above-described embodiments as long as it conforms to the gist of the disclosure described in the above-described embodiments. Therefore, in the configuration in which at least two of the above-described embodiments are combined, or in the above-described embodiments, any one of the illustrated constituent elements or the constituent elements described with reference numerals is abolished. It may be configured as

DESCRIPTION OF SYMBOLS 1... Vehicle seat 3... Seat cushion 5... Seat back 5A... Back frame 10... Hinge mechanism 11... Fixed member 11A... Recessed part 12... Rotating member 13... Coupler 13A... Small diameter part 13B... Large diameter part 14... Washer

Claims (6)

In a vehicle seat mounted on a vehicle,
a fixed member and a rotating member;
a connecting tool that rotatably connects the rotating member to the fixed member, the connecting tool being a rod-shaped connecting tool passing through the fixed member and the rotating member;
an annular washer disposed between the fixed member and the rotating member and penetrated by the connector, the washer exerting an elastic force in a direction to separate the rotating member from the fixed member; ,
When one of the fixed member and the rotating member is the first member and the other member is the second member,
The connector has a small diameter portion penetrating the first member and a large diameter portion having a larger diameter than the small diameter portion and penetrating the washer,
Any one of the first member and the second member is provided with a recess recessed in a direction away from the other member, the recess through which the connector penetrates in the recessed direction,
Further, in the vehicle seat, at least part of the large-diameter portion is positioned within the recess, and the position of the one member relative to the other member is determined by the large-diameter portion. The vehicle seat according to claim 1, wherein the large-diameter portion penetrates the other member. 3. The vehicle seat according to claim 2, wherein said one member is said first member. 4. The vehicle seat according to claim 3, wherein said first member is said fixed member. 5. A vehicle seat according to any one of claims 1 to 4, wherein the washer is a corrugated washer. The vehicle seat according to any one of claims 1 to 5, wherein the rotating member constitutes at least part of a seatback frame.

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