JP2007229134A - Armrest and vehicle seat with armrest - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide armrests and a vehicle seat with the armrests, which has a reduced number of components, a lightweight, and stable operability. <P>SOLUTION: Each of the armrests disposed on the sides of a seat back of the vehicle seat includes an armrest body 12 and a retaining member retaining the armrest body 12 to an attachment part 31 in the seat back side, and the retaining member includes the attachment part 31, a shaft member 32 to be engaged with the side face 13 of the seat back side of the armrest body 12, a fixing member 37 clamping the attachment part 31 and the armrest body 12 between itself and the head of the shaft member 32, and sliding members 33 and 36 engaged with the shaft member 32 and disposed between the attachment part 31 and the armrest body 12, and between the fixing member 37 and the armrest body 12 respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an armrest and a vehicle seat provided with an armrest, and more particularly to an armrest provided on a seat back side portion and a vehicle seat provided with an armrest.

An armrest is provided on the side of the seat back of the automobile.
The armrest is rotatably provided on the side portion of the seat back, and is configured to be able to tilt or stand up and switch between the states when used and when not used.

FIG. 9 is an explanatory view showing a conventional armrest 110 mounting structure.
The armrest 110 includes a frame 111, and is connected to a bracket 121 provided on the seat back 120 side via the frame 111.
A pivot pin 112 is attached to the frame 111, and one end of the pivot pin 112 is fixed to a bracket 121 on the seat back 120 side.
As shown in FIGS. 10 and 11, the pivot pin 112 is provided with a resin bush 113, and the frame 111 of the armrest 110 rotates around the bush 113. As a result, the armrest 110 can be placed on its side when it is in use, and can be stowed up when it is not in use and stored in the side portion of the seat back.

In the conventional mounting structure described above, since the heavy and thick pivot pin 112 is used, there is a problem that the working efficiency when mounting the armrest is not good.
Also, a hole for passing the pivot pin 112 is formed in the frame 111 of the armrest 110. Since the resistance when the armrest 110 is rotated changes depending on the position and size of the hole, a process for forming the hole is performed. There was a problem that it took time to manage.

In addition, since the frame 111 of the armrest 110 is engaged with the bushes 113 provided at both ends of the pivot pin 112 and rotates around the bush 113, the width of the frame 111 varies. There was a problem that the operating resistance would change. That is, when the frame width is large, the frame 111 is disposed to the full width of the pivot shaft 112 and is pressed against the bush 113 to increase the resistance when rotating. On the other hand, when the frame width is small, the resistance during rotation is small, and the operability cannot be stabilized.

  For this reason, in the attachment of an armrest, the attachment method of the armrest which can be attached without using a pivot pin is proposed (for example, refer patent document 1).

JP 2001-238758 A

The technology of Patent Document 1 is provided with bearing cylinders on the seat back side and armrest side, and the armrest side is attached to the seat back by engaging the bearing cylinder on the armrest side with the bearing cylinder on the seat back side. It is said that.
In the technique of Patent Document 1, the bearing cylinder projecting from the armrest body is engaged with the bearing cylinder on the seat back side, and the shaft portion is further pulled to fit the fixing portion to the fitting portion at the tip of the shaft portion. Therefore, the armrest is fixed.
With the above configuration, the armrest can be attached to the seat back in a stable state regardless of the frame width of the armrest or the like.

However, in the technique of Patent Document 1, after engaging the bearing cylinder of the armrest and the bearing cylinder of the seat back, a process of inserting a tool into a hole provided in the armrest and pulling out the shaft portion is necessary. There was a problem that work was troublesome.
Further, since the mechanism on the seat back side is provided inside the seat back, there is a problem in that processing such as providing a recess in the seat back is required, leading to an increase in cost.

  The objective of this invention is providing the vehicle seat provided with the armrest and armrest which can aim at the lightweight and stable operativity with few components.

  According to the present invention, there is provided an armrest disposed on a side portion of a seat back of a vehicle seat, wherein the armrest holds the armrest main body and the armrest main body on the seatback side mounting portion. A holding member, and the holding member includes the attachment portion, a shaft member that engages with a side surface of the armrest body on the seat back side, and the attachment portion and the armrest body that are connected to the head of the shaft member. And a sliding member that is engaged with the shaft member and disposed between the mounting portion and the armrest main body and between the fixing member and the armrest main body. Is solved.

As described above, in the armrest of the present invention, one side surface of the armrest body is held by the mounting portion of the seat back by the shaft member and the fixing member. Therefore, unlike the prior art, a pivot pin penetrating the armrest body is unnecessary, and there is no inconvenience that the rotation resistance changes depending on the dimensions of the armrest body.
That is, the armrest of the present invention can make the rotation resistance constant regardless of the size of the armrest body.

It is preferable that a reinforcing member that reinforces the assembly by the holding member is disposed between the sliding member and the armrest body.
In addition, it is preferable that the attachment portion and the sliding member disposed between the attachment portion and the armrest body are formed in a mountain shape having a tapered portion.
With the above configuration, an appropriate sliding resistance can be obtained between the attachment portion and the sliding member.

Furthermore, it is preferable that the sliding member disposed between the fixing member and the armrest main body is formed in a dish shape having a flange portion.
With the above configuration, when the reinforcing member is disposed between the armrest body and the sliding member, the dish-shaped sliding member and the reinforcing member can be engaged with each other, and are disposed on the outermost side of the shaft member. It is possible to prevent the displacement of the sliding member.

  The vehicle seat provided with the armrest of the present invention is a seatback and a vehicle seat provided with an armrest on a side portion of the seatback, wherein the armrest includes the armrest body and the armrest body on the seatback side. A holding member that holds the attachment portion, and the holding member includes the attachment portion, a shaft member that engages with a side surface of the armrest body on the seat back side, and the attachment portion and the armrest body. A fixing member that is clamped between the head of the shaft member, and a slide that is engaged with the shaft member and disposed between the attachment portion and the armrest body, and between the fixing member and the armrest body. And a member.

It is preferable that a reinforcing member for reinforcing assembly by the holding member is disposed between the sliding member and the armrest body.
In addition, it is preferable that the attachment portion and the sliding member disposed between the attachment portion and the armrest body are formed in a mountain shape having a tapered portion.
Furthermore, it is preferable that the sliding member disposed between the fixing member and the armrest main body is formed in a dish shape having a flange portion.

  According to the armrest and the vehicle seat provided with the armrest according to the present invention, since one side surface of the armrest body is held by the mounting portion of the seat back with the shaft member and the fixing member, A pivot pin that penetrates is unnecessary, and the resistance during rotation can be made constant regardless of the size of the armrest body.

  Moreover, since the number of parts is small and the assemblability is improved, man-hours and costs can be reduced.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The members, arrangements, and the like described below are not intended to limit the present invention and can be variously modified within the scope of the gist of the present invention.

  1 to 6 relate to an embodiment of the present invention. FIG. 1 is an explanatory view of a seating seat provided with the armrest of the present invention, FIG. 2 is a perspective view of the armrest, and FIG. 4 is an exploded perspective view of the armrest, FIG. 5 is an explanatory view showing the armrest frame, FIG. 6 is an explanatory view of the sliding member, and FIG. 7 is a sectional view showing the assembled state of the armrest.

  FIG. 1 shows a seat S provided with an armrest 1 of the present invention. The armrest 1 is disposed on the side portion of the seat back 2 of the seating seat S. In the seating seat S, the armrest 1 stands on the side portion of the seat back 2 when not in use, is rotated from this state when in use, and is tilted to the side portion of the seat back 2 as shown.

As shown in FIG. 2, the armrest 1 of this example is disposed on the seatback 2 by attaching the armrest body 10 to a frame 21 of the seatback 2.
As shown in FIGS. 2 and 3, the armrest body 10 includes a pad portion 11 and an armrest frame 12 that is assembled to the pad portion 11 integrally. The pad portion 11 is made of, for example, urethane foam and is covered with a skin material (not shown).

The armrest body 10 is rotatably attached to a frame 21 of the seat back 2 via an armrest frame 12.
As shown in FIG. 4, a recess 12 a is formed at a position where the armrest frame 12 is attached to the seat back. The armrest frame 12 is made of, for example, SP material in order to ensure strength.

  The armrest body 10 is attached to the frame 21 of the seat back 2 by a holding member. The holding member includes a bracket 31, a pivot bolt 32 as a shaft member, a taper washer 33 as a sliding member, a disc spring 34 and a flat washer 35 as reinforcing members, and a resin washer 36 as a sliding member, And a nut 37 as a fixing member.

  The bracket 31 functions as an attachment portion of the armrest body 10 provided on the seat back 2 side, and is fixed to the frame 21 of the seat back 2 by welding or the like. The bracket 31 is formed with a bulging portion 31a that protrudes toward the armrest 1 side. The bulging portion 31a has a flat top and is formed in a mountain shape having a tapered slope. A pivot bolt 32 is fixed to the hole provided in the center of the bulging portion 31a by welding.

The pivot bolt 32 is disposed on the bracket 31. The pivot bolt 32 includes a head portion 32a, a first shaft portion 32b protruding from the head portion 32a, and a second shaft portion 32c protruding from the tip of the first shaft portion 32b. The second shaft portion 32c is threaded.
The head 32a of the pivot bolt 32 is fixed to the bracket 31 by welding.

  As shown in FIG. 7, the taper washer 33, the armrest frame 12, the disc spring 34, the flat washer 35, and the resin washer 36 are engaged with the first shaft portion 32 b of the pivot bolt 32. The taper washer 33, the armrest frame 12, the disc spring 34, the flat washer 35, and the resin washer 36 are attached to the first shaft portion 32b of the pivot bolt 32 in the holes provided in the respective members, and around the first shaft portion 32b. Is slidably attached to.

  A nut 37 is screwed into the second shaft portion 32c. The nut 37 is provided with a flange portion 37a. Thereby, the taper washer 33, the armrest frame 12, the disc spring 34, the flat washer 35, and the resin washer 36, which are engaged with the first shaft portion 32b of the pivot bolt 32, are connected to the bracket 31 and the flange 37a of the nut 37. In the meantime, it is pivotally fixed around the pivot bolt 32.

The taper washer 33 is a sliding member disposed between the mounting portion 31 and the armrest frame 12, and is formed in a mountain shape having a flat top portion and a tapered slope. The taper washer 33 is formed in substantially the same cross-sectional shape as the bulging portion 31a provided in the bracket 31 on the seat back 2 side, and is formed so as to be able to fit into the bulging portion 31a.
Further, the taper washer 33 is formed in substantially the same cross-sectional shape as the concave portion 12a formed on the side surface 13 of the armrest frame 12, and is formed so as to be fitted into the concave portion 12a.
The taper washer 33 is made of resin, and is formed of, for example, polyamide that is lightweight and has excellent mechanical strength.
Since the taper washer 33 is fitted to the bulging portion 31a of the bracket 31, it can slide smoothly with respect to the bulging portion 31a and obtain an appropriate sliding resistance when the armrest is operated.

The disc spring 34 is a reinforcing member that reinforces the assembly by the holding member, and prevents loosening between the members by a spring repulsive force corresponding to the tightening force of the nut 37.
The flat washer 35 is also a reinforcing member that reinforces the assembling by the holding member, is made of SP material, is attached to the outer side of the disc spring 34, and is configured to press the disc spring 34 and hold the mounting strength of the member. Has been.

  The resin washer 36 is a sliding member disposed between the nut 37 and the armrest frame 12, in this example, between the nut 37 and the flat washer 35, and is made of, for example, polyamide. The resin washer 36 is adjacent to the flange 37 a of the nut 37 and slides with respect to the flange 37 a of the nut 37.

As shown in FIG. 6, the resin washer 36 is formed in a dish shape having a flange portion 36a. By this flange portion 36 a, the resin washer 36 can be engaged with the flat washer 35.
Before the nut 37 is tightened, the disc spring 34 is not bent, so that the resin washer 36 is pushed outward and cannot be pushed all the way.
If the resin washer 36 has a flat plate shape, the resin washer 36 is detached from the pivot bolt 32 and is not fixed in the correct position when the nut 37 is tightened, and the resin washer 36 is engaged between the nut 37 and the pivot bolt 32 There is a risk of it.

Since the resin washer 36 of this example includes the flange portion 36a, it can be fixed to the flat washer 35 before the nut 37 is tightened, as shown in FIG. Thereby, it becomes possible to make it difficult to come off from the first shaft portion 32 b of the pivot bolt 32.
In this way, the resin washer 36 can be disposed at the correct position.

  When the resin washer 36 is disposed at the correct position, the nut 37 is fixed to the second shaft portion 32 c of the pivot bolt 32. Thus, the taper washer 33, the armrest frame 12, the disc spring 34, the flat washer 35, and the resin washer 36 are disposed between the bracket 31 on the seat back 2 side and the flange portion 37a of the nut 37.

  When the armrest 1 rotates, the taper washer 33, the armrest frame 12, the disc spring 34, the flat washer 35, and the resin washer 36 are pivoted between the bracket 31 on the seat back 2 side and the flange 37a of the nut 37. It is rotated around.

Note that the armrest 1 of this example is provided with a mechanism for restricting the rotation of the armrest 1. In order to regulate the rotation of the armrest 1, the bracket 31 is provided with a projection 31 b, and the armrest frame 12 is formed with a surface 12 b lower than the side surface 13 as shown in FIGS. 4 and 5.
Step portions 12c and 12d with the side surface 13 are formed on both ends of the surface 12b.

The protrusion 31b is movable between the step portions 12c and 12d at both ends of the surface 12b. When the armrest frame 12 is in an upright state, the protrusion 31b engages with the step portion 12c and restricts the armrest frame 12 from rotating further. When the armrest frame 12 is turned and tilted, the protrusion 31b engages with the stepped portion 12d to restrict the armrest frame 12 from further tilting.
In this way, the rotation of the armrest 1 is restricted.

FIG. 8 is an explanatory view showing another embodiment of the taper washer 33.
The taper washer 33 shown in FIG. 8 includes a cylindrical portion 33 a that can be engaged with the first shaft portion 32 b of the pivot bolt 32.
By arranging the cylindrical portion 33a around the first shaft portion 32b, the armrest frame 12, the disc spring 34, and the flat washer 35 do not directly contact the pivot bolt 32. Therefore, it is possible to avoid rubbing between metals and to prevent generation of abnormal noise due to rubbing between metals.

It is explanatory drawing of the seating sheet provided with the armrest of this invention. It is a perspective view of the armrest of the present invention. It is the sectional view on the AA line of FIG. It is a disassembled perspective view of an armrest. It is explanatory drawing which shows an armrest frame. It is explanatory drawing of a sliding member. It is sectional drawing which shows the assembly | attachment state of an armrest. It is explanatory drawing which shows another Example. It is explanatory drawing which shows a prior art example. It is explanatory drawing which shows a prior art example. It is explanatory drawing which shows a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Armrest 2 Seat back 10 Armrest main body 11 Pad part 12 Armrest frame 12a Recessed part 12b Surface 12c, 12d Step part 13 Side surface 21 Frame 31 Bracket (attachment part)
31a bulging part 31b protrusion 32 pivot bolt (shaft member)
32a Head 32b First shaft portion 32c Second shaft portion 33 Taper washer (sliding member)
33a Cylindrical part 34 Disc spring (reinforcing member)
35 Flat washer (reinforcement member)
36 Resin washers (sliding members)
36a Flange part 37 Nut (fixing member)
37a Buttocks S Seating Seat

Claims (8)

An armrest disposed on a side portion of a seat back of a vehicle seat,
The armrest includes an armrest main body and a holding member that holds the armrest main body on the attachment portion on the seat back side,
The holding member includes the attachment portion, and a shaft member that engages with a side surface of the armrest body on the seat back side,
A fixing member that clamps the mounting portion and the armrest body between the head of the shaft member;
An armrest, comprising: a sliding member that is engaged with the shaft member and disposed between the attachment portion and the armrest body and between the fixing member and the armrest body.   The armrest according to claim 1, wherein a reinforcing member that reinforces assembly by the holding member is disposed between the sliding member and the armrest main body.   The armrest according to claim 1, wherein the attachment portion and the sliding member disposed between the attachment portion and the armrest body are formed in a mountain shape having a tapered portion.   The armrest according to claim 1 or 2, wherein the sliding member disposed between the fixing member and the armrest main body is formed in a dish shape having a flange portion. A seat back and a vehicle seat provided with an armrest on a side portion of the seat back,
The armrest includes an armrest main body and a holding member that holds the armrest main body on the attachment portion on the seat back side,
The holding member includes the attachment portion, and a shaft member that engages with a side surface of the armrest body on the seat back side,
A fixing member that clamps the mounting portion and the armrest body between the head of the shaft member;
A vehicle equipped with an armrest, wherein the vehicle is provided with a sliding member that is engaged with the shaft member and is disposed between the mounting portion and the armrest body and between the fixing member and the armrest body. Sheet.   The vehicle seat provided with the armrest according to claim 5, wherein a reinforcing member that reinforces assembly by the holding member is disposed between the sliding member and the armrest main body.   The armrest according to claim 5, wherein the mounting portion and the sliding member disposed between the mounting portion and the armrest main body are formed in a mountain shape having a tapered portion. Vehicle seat.   7. The vehicle seat with an armrest according to claim 5, wherein the sliding member disposed between the fixing member and the armrest body is formed in a dish shape having a flange portion. .

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