JP2016168906A - Armrest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily confirm a fastening state of an armrest pad and a first support bracket.SOLUTION: An armrest 10 is provided on a side of a seat and supports an armrest pad 20 so as to enable rotation around a first shaft P1 to extend the armrest pad in a width direction of the seat and rotation around a second shaft P2 along the width direction of the seat. The armrest includes: the armrest pad; a first support bracket 40 for rotatably supporting the armrest pad around the first shaft; and a second support bracket for rotatably supporting the first support bracket around the second shaft. A fastening member 217 for connecting the armrest pad and the first support bracket is disposed outside the armrest pad.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an armrest provided on a seat.

Conventionally, a seat such as a vehicle is equipped with an armrest that supports an armrest pad so that the seat can be stored when not in use and deployed when the armrest is used.
The armrest has a substantially plate-shaped armrest pad, a sub armrest frame that supports the armrest pad so that the armrest pad can be rotated in a deploying direction, and supports the sub armrest frame so that the sub armrest frame can rotate about an axis along the width direction of the seat. Armrest brackets (see, for example, Patent Document 1).
In the above armrest, when used, the armrest bracket rotates the sub armrest frame and the armrest pad so that the sub armrest frame and the armrest pad are tilted forward, and the armrest pad in the state where the sub armrest frame is erected is rotated around the axis along the front-rear direction. Rotate it to expand it.
When stowed, the armrest pad with the sub armrest frame deployed horizontally is turned around the axis along the front-rear direction to stand up, and the armrest bracket moves the subarmrest frame and armrest pad in the seat width direction. It is designed to rotate backward about an axis along the axis.

Japanese Patent No. 3576925

  By the way, in the conventional armrest, a fastening member for fastening the armrest pad and the sub armrest frame is embedded in a resin constituting the armrest, and it is difficult to check a fastening state at the time of assembly.

  An object of the present invention is to facilitate confirmation of a fastening state when an armrest pad is assembled.

The invention described in claim 1
Rotating about a first axis that is provided on the side of the seat and deploys the armrest pad in the width direction of the seat, and enables rotation about a second axis along the width direction of the seat In the armrest that supports the armrest pad,
The armrest pad;
A first support bracket that rotatably supports the armrest pad about the first axis;
A second support bracket that rotatably supports the first support bracket about the second axis;
With
A fastening member for connecting the armrest pad and the first support bracket is disposed outside the armrest pad.

The invention according to claim 2 is the armrest according to claim 1,
The fastening member may be a nut that fastens a screw shaft extending from the armrest pad to the outside.

The invention according to claim 3 is the armrest according to claim 2,
The screw shaft is provided so as to be concentric with the first shaft.

The invention according to claim 4 is the armrest according to claim 2 or 3,
A boss for inserting the tip end portion of the screw shaft is fixed to the first support bracket.

The invention according to claim 5 is the armrest according to any one of claims 2 to 4,
The screw shaft is a long bolt,
The armrest pad incorporates a cylindrical body for inserting the bolt,
The both ends of the bolt are provided with collars for positioning around the bolt.

The invention according to claim 6 is the armrest according to claim 5,
A washer is provided between the tip of the bolt and the nut.

  According to the first aspect of the present invention, the fastening member that connects the armrest pad and the first support bracket is disposed outside the armrest pad. Therefore, when the armrest is assembled, the fastening member is embedded in the armrest pad. The fastening state of the fastening member can be easily visually recognized from the outside without any trouble.

  According to the second aspect of the present invention, since the fastening member is a nut, the arrangement space can be easily secured when the fastening member is arranged outside the armrest pad. Further, since the space for arranging the nuts may be small, it is possible to reduce the size of the entire armrest.

  In the invention according to claim 3, by providing the screw shaft so as to be concentric with the first shaft, the screw shaft connecting the armrest pad and the first support bracket can also be used as the rotation shaft of the armrest pad. This can reduce the number of parts.

  In the invention of claim 4, since the boss for inserting the tip end portion of the screw shaft is fixed to the first support bracket, the screw shaft can be stably supported as compared with the case where it is supported by a flat plate. It is possible to stabilize the rotation operation of the armrest pad.

  The invention according to claim 5 is a configuration in which the screw shaft is a long bolt, a cylindrical body is inserted into the armrest pad, and a collar for positioning the bolt at the center is provided at both ends of the bolt. Therefore, it becomes easy to adjust the rotation center of the armrest pad to a desired position, and it is possible to suppress the rotation blur and stabilize the rotation operation of the armrest pad.

According to the sixth aspect of the present invention, a washer is interposed between the tip of the bolt and the nut. Therefore, when the nut is fastened, the washer is prevented from rotating and can be prevented from loosening.
In addition, it is possible to prevent the occurrence of scratches between the bolt and the nut and to protect the member.

It is a perspective view of a sheet. It is a perspective view of an armrest. FIG. 3 is a perspective view of an armrest viewed from a direction different from that in FIG. 2. FIG. 4 is a perspective view of an armrest viewed from a direction different from that in FIGS. 2 and 3. It is sectional drawing which carried out the cross sectional view of the armrest pad by the cross section along the perpendicular plane containing a 1st axis | shaft when an armrest exists in a use position. It is sectional drawing of a stopper member periphery along the horizontal cross section containing a 1st axis | shaft. It is the rear view which looked at the stopper member from back. It is the rear view which looked at the reinforcement support member from back. It is a rear view which shows the example of the reinforcing support member made into symmetrical shape. It is sectional drawing which looked at the 1st support bracket and the 2nd support bracket by the section which met the perpendicular upper and lower part containing the 2nd axis in the use state of an armrest.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

In the present embodiment, a vehicle seat 100 including the armrest 10 is illustrated.
In the following description, the front / rear / left / right / up / down directions viewed from a person sitting on the seat 100 will be described as front / rear / left / right / up / down. Note that the front-rear direction, the left-right direction, and the up-down direction are orthogonal to each other.

[Sheet]
FIG. 1 is a perspective view of the seat 100. In this figure, illustration of the seat cover and the resin and urethane in the cover is omitted, and only the seat frame is shown.
As shown in the figure, the seat 100 connects a seat back frame 120, a pair of left and right cushion side frames 130, 130 disposed on the left and right of the lower portion of the seat back frame 120, and a pair of left and right cushion side frames 130, 130, respectively. The front and rear pipe frames 141 and 142, the base frame 150 provided on the lower side of the cushion side frames 130 and 130, and the reclining mechanism as a movable part for tilting the seat back frame 120 with respect to the cushion side frames 130 and 130 160, a slide mechanism 170 as a movable portion that moves the cushion side frames 130, 130 back and forth with respect to the base frame 150, and a side (side surface) of the seat 100. And an armrest 10 capable of switching the pay and use positions.
Each of the frames 120, 130, 141, 142, and 150 is mainly made of a rust-proof metal (for example, stainless steel).

  The seat back frame 120 includes a pair of back side frames 121 and 121 on the left and right sides, and a pipe-like upper frame 122 that connects the back side frames 121 and 121 to the top.

  A support shaft 123 is provided at the lower end of the seat back frame 120 so as to be connected to the rear ends of the pair of cushion side frames 130 and 130. The support shaft 123 is attached along the left-right direction, and the seat back frame 120 can be rotated in the direction in which the upper end side of the seat back frame 120 moves back and forth with respect to the cushion side frames 130, 130. .

Further, a wire frame 124 and an S spring 125 having a concavo-convex shape extending in the left-right direction are installed between two support pillar portions along the upper and lower sides of the left and right sides of the upper frame 122.
An S spring 126 is also installed between the two backside frames 121 and 121.

  The reclining mechanism 160 is provided on the support shaft 123, and imparts a rotational motion to the seat back frame 120 by a reclining motor (not shown).

  The pair of left and right cushion side frames 130 and 130 are connected to each other at their front and rear ends by pipe frames 141 and 142, and a plurality of S springs 131 are installed between the front pipe frame 141 and the rear pipe frame 142. Has been.

  The base frame 150 has long slide rails 151 and 151 along the front-rear direction (strictly inclined slightly forward and obliquely upward) on both the left and right sides, and the front and rear ends of each slide rail 151 and 151. Are fixed to the assembly position of the seat, and a pair of cushion side frames 130 and 130 are supported to be movable back and forth.

  The slide mechanism 170 includes a slide motor (not shown) that applies a forward and backward moving force to the pair of cushion side frames 130 and 130 that can be moved back and forth by the left and right slide rails 151 and 151 of the base frame 150.

[Outline of armrest]
2 to 4 are perspective views of the armrest 10 as seen from different directions. In both figures, the skin cover 27 of the armrest pad 20 described later and the resin 26 inside thereof are omitted.
The armrest 10 includes a substantially flat armrest pad 20, a first support bracket 40 that supports the armrest pad 20 so as to be rotatable about the first axis P1, and a first support bracket 40 that is supported by the second axis. And a second support bracket 60 that is pivotally supported around P2.

The second support bracket 60 enables the first support bracket 40 and the armrest by rotating the first support bracket 40 within a range of about 90 ° around a second axis P2 parallel to the left-right direction. The front end of the pad 20 can be switched between an upright state facing upward and a horizontal state facing forward.
The first support bracket 40 allows the armrest pad 20 to be rotated within a range of about 90 ° around the first axis P1 that is parallel to the front-rear direction when the armrest pad 20 is in a horizontal state. It is possible to switch between an upright state in which the side end portion is directed upward and a horizontal state in which the side end portion is directed rightward.

A state where the front end of the armrest pad 20 faces forward and the side end faces rightward and the flat plate surface is substantially horizontal is the use position of the armrest 10, and the front end of the armrest pad 20 faces upward. In addition, the storage position of the armrest 10 indicates a state in which the side end portion faces rearward and the flat plate surface is substantially vertical.
Further, in the following description of the armrest 10, when describing any of the front, rear, left, right, top, and bottom portions, positions, directions, orientations, and the like for each configuration of the armrest 10, it is assumed that the armrest 10 is in the use position. Shall be.

[Armrest pad]
FIG. 5 is a cross-sectional view of the armrest pad 20 in a sectional view along a vertical plane including the first axis P1 at the use position of the armrest 10.
As shown in FIGS. 2 and 5, the armrest pad 20 has a cylindrical tubular body 21 placed so that the first axis P <b> 1 is at the center, and the first axis P <b> 1 from the outer peripheral surface of the tubular body 21. A frame wire 22 projecting radially outward from the center, a long bolt 23 as a screw shaft inserted into the tubular body 21, and a rear end portion of the tubular body 21 are fixedly equipped. A plate portion 24 facing the support bracket 40, a protrusion 25 fixedly supported by the plate portion 24 and extending toward the first support bracket 40 along the first axis P1, and the armrest pad 20 The resin 26 that forms the entire outer shape of the resin 26 and a skin cover 27 that covers the surface of the resin 26 are provided.

As shown in FIG. 5, the cylindrical body 21 has a double-pipe structure having an inner cylinder 211 and an outer cylinder 212 arranged concentrically so that the first axis P1 is the center. It is fixed.
Further, the front end portion of the inner cylinder 211 is located on the rear inner side than the front end portion of the outer cylinder 212.
A bolt 23 is inserted from the front end side of the inner cylinder 211 to the inside thereof.

  As shown in FIG. 5, the bolt 23 includes a head portion 231 that is equal to the outer diameter of the outer cylinder 212, a first insertion portion 232 that is adjacent to the head portion 231 through a stepped portion, and a first insertion through the stepped portion. A second insertion portion 233 adjacent to the portion 232, a long shaft portion 234 adjacent to the second insertion portion 233 via a conical surface, and a screw portion 235 formed at the distal end portion on the insertion side of the shaft portion 234. I have.

  The outer diameter of the head 231 of the bolt 23 is substantially equal to the outer diameter of the outer cylinder 212, and the outer diameter of the first insertion portion 232 is substantially equal to the inner diameter of the outer cylinder 212. Accordingly, the first insertion portion 232 can be inserted into the front end portion of the outer cylinder 212 up to a position where the head portion 231 contacts. In this state, the outer peripheral surface of the head 231 and the outer peripheral surface of the front end portion of the outer cylinder 212 are connected. The bolt 23 is fixed to the cylindrical body 21 by welding at the boundary position. The cylindrical body 21 and the frame wire 22 are embedded in a resin 26 that forms the outer shape of the armrest pad 20, and when the armrest pad 20 is deployed, the cylindrical body 21 and the resin 26 rotate together. The bolt 23 is fixed to the cylindrical body 21 so as not to rotate in the armrest pad 20.

  Further, the outer diameter of the second insertion portion 233 of the bolt 23 is smaller than the inner diameter of the front end portion side of the inner cylinder 211, and the second insertion portion 233 and the shaft portion 234 are loosely inserted inside the front end portion of the inner cylinder 211. Yes. A flanged collar 213 is interposed between the inner peripheral surface of the inner cylinder 211 and the outer peripheral surface of the second insertion portion 233. The outer diameter of the collar 213 substantially matches the inner diameter of the front end portion of the inner cylinder 211, the inner diameter of the collar 213 substantially matches the outer diameter of the second insertion portion 233, and the front end portion of the bolt 23 is connected to the bolt 23. Is held so that the center thereof coincides with the center of the cylindrical body 21 (first axis P1).

A cylindrical boss 41 extending from the first support bracket 40 toward the armrest pad 20 is loosely inserted into the rear end portion of the outer cylinder 212.
A flanged collar 214 is interposed between the outer peripheral surface of the boss 41 and the inner peripheral surface of the outer cylinder 212. The outer diameter of the collar 214 is substantially the same as the inner diameter of the outer cylinder 212, and the inner diameter is substantially the same as the outer diameter of the boss 41. Are concentric with each other.

On the other hand, the inner cylinder 211 of the cylindrical body 21 has a rear end that is reduced in diameter. The outer diameter of the inner cylinder 211 substantially matches the inner diameter of the boss 41 and is inserted into the boss 41. The rear end of the boss 41 protrudes on the opposite side of the first support bracket 40 from the armrest pad 20. The rear end portion of the inner cylinder 211 slightly protrudes rearward from the rear end portion of the boss 41 and is slightly expanded in diameter to form a stopper.
Further, the inner diameter of the rear end portion of the inner cylinder 211 is larger than the outer diameter of the shaft portion 234 of the bolt 23, and the shaft portion 234 is loosely inserted. That is, the rear end portion (tip portion in the insertion direction) of the bolt 23 is inserted into the boss 41 via the inner cylinder 211.
A flanged collar 215 is interposed between the inner peripheral surface of the rear end portion of the inner cylinder 211 and the outer peripheral surface of the shaft portion 234. The collar 215 has an outer diameter that substantially matches the inner diameter of the rear end portion of the inner cylinder 211, and an inner diameter that substantially matches the outer diameter of the shaft portion 234. The bolt 23 is held so that the center coincides with the center of the inner cylinder 211 (first axis P1).

The screw portion 235 of the bolt 23 has a male screw formed on the outer peripheral surface thereof. The bolt 23 is inserted to a position where the screw portion 235 protrudes rearward from the rear end portions of the boss 41 and the inner cylinder 211, and is screwed through a washer 216 having an outer diameter larger than the inner diameter of the boss 41 and the collar 215. The part 235 is fastened to a nut 217 as a fastening member.
The nut 217 is fastened with the washer 216 sandwiched between the nut 217 and the collar 215. For this reason, the washer 216 can suppress the slip of the nut 217 and can effectively reduce the occurrence of looseness of the nut 217.

Further, since the screw portion 235 of the bolt 23 extends to the side opposite to the armrest pad 20 (backward) with respect to the first support bracket 40, the nut 217 is also opposite to the armrest pad 20 in the first support bracket 40. Located on the side (rear).
For this reason, when the armrest pad 20 is assembled to the first support bracket 40, the fastening state of the nut 217 can be easily confirmed visually.

  As shown in FIGS. 2 and 3, one end and the other end of the frame wire 22 are fixed to the vicinity of the front end and the vicinity of the rear end on the outer peripheral surface of the cylindrical body 21 by welding. The frame wire 22 is formed in a substantially rectangular shape in plan view, and has a shape that is greatly recessed inward so that corners are rounded and one corner thereof does not interfere with the first support bracket 40.

As shown in FIGS. 3 and 5, the resin 26 is formed in a substantially flat plate shape having a rectangular shape in plan view so as to enclose the entire frame wire 22 and almost the entire cylindrical body 21 excluding the rear end portion. . The outer shape of the resin 26 is formed in a substantially wedge shape so that the thickness gradually decreases toward the front as viewed from the left-right direction. Therefore, the upper surface of the armrest pad 20 is inclined in a direction in which the front end portion is somewhat lowered from the horizontal in the use state. Further, the front end portion and the rear end portion of the resin 26 each have a circumferential shape with the left-right direction as an axis.
The entire surface of the resin 26 is covered with the skin cover 27 except for the rear end portion of the cylindrical body 21 projecting to the outside. The skin cover 27 is not particularly limited as long as it is a sheet-like material such as leather, synthetic leather, and cloth.

  As shown in FIG. 5, the plate portion 24 is a flat plate perpendicular to the first axis P <b> 1, and the rear end portion of the outer cylinder 212 of the cylindrical body 21 is inserted into a circular hole provided in the center portion thereof. . The plate portion 24 is fixedly mounted on the rear end portion of the cylindrical body 21 by a fixture 241 that press-fits and fixes the rear end portion of the outer cylinder 212. Further, the plate portion 24 is embedded in the vicinity of the rear end portion of the resin 26.

  Further, as shown in FIG. 4, the plate portion 24 firmly supports a rod-like projection portion 25 penetrating the plate portion 24 by welding. The protruding portion 25 has a rear end portion that extends straight rearward from the plate portion 24 and is inserted into a stopper member 46 provided on the first support bracket 40. Further, the front end portion of the protrusion 25 is bent upward and is fixed to the outer peripheral surface of the outer cylinder 212 by welding.

[First support bracket: overall configuration]
As shown in FIGS. 2 to 4, the first support bracket 40 includes a bracket body 42 bent in an L shape in plan view, and a cover provided on the two surfaces on the L shape inside of the bracket body 42. Body 43, bosses 41 and 44 fixedly supported by the bracket body 42, two connection reinforcing members 45 and 45 that reinforce the bracket body 42 and the cover body 43, and the armrest pad 20. A stopper member 46 that regulates the moving range, and a reinforcing support member 47 that supports the stopper member 46 from the opposite side of the protruding portion 25 at a lower end portion as a contact portion with which the protruding portion 25 contacts the stopper member 46 are provided.

[First support bracket: first wall]
As shown in FIG. 2, the bracket main body 42 has a first wall portion 421 that supports the armrest pad 20 facing the armrest pad 20 and a second support bracket 60 across the bent portion. A second wall portion 422 connected to the second support bracket 60 is provided.
The first wall portion 421 is substantially rectangular and is perpendicular to the first axis P1 described above, and is fixedly supported by welding in a state in which the boss 41 is passed through the center.
The first wall portion 421 has an arc shape in which the second wall portion 422 is located at the left end portion, and the right end portion has an outer edge shape bulging outward. An arc-shaped opening 423 is formed in the vicinity of the right end of the first wall 421 along the outer edge thereof, and a stopper member 46 is fitted to the opening 423. The arc opening 423 is formed along an arc centered on the first axis P1, and both end portions thereof are rounded in a semicircular arc shape. The stopper member 46 is positioned at the end of the first wall 421 opposite to the second wall 422, and the boss 41 is positioned between the second wall 422 and the stopper member 46. .

[First support bracket: Stopper member]
FIG. 6 is a sectional view of the periphery of the stopper member 46 along a horizontal section including the first axis P1, and FIG. 7 is a rear view of the stopper member 46 as viewed from the rear.
As shown in FIGS. 6 and 7, the stopper member 46 provided in the opening 423 is made of a cylindrical resin having flexibility, and follows the opening 423 when inserted into the opening 423. Held in a different shape. On the outer peripheral surface of the stopper member 46, a total of six square-shaped claw portions 461 project from the upper and lower end portions and the middle portion thereof, and when inserted into the opening portion 423 from the rear to the front, Each nail | claw part 461 can contact | abut to the 1st wall part 421, and can stop at an appropriate position. In other words, each claw portion 461 can effectively reduce the occurrence of over-pressing or under-pressing of the opening 423 when attaching the stopper member 46 and work without paying great attention to the pressing amount. It is possible to reduce the work load. Note that the number and arrangement of the claw portions 461 can be arbitrarily changed.

  A rear end portion of the protruding portion 25 extending rearward from the armrest pad 20 is inserted into the cylindrical stopper member 46. Since the protruding portion 25 is fixedly supported by the plate portion 24 of the cylindrical body 21, it moves around the first axis P1 as the armrest pad 20 rotates. Therefore, the stopper member 46 moves along the arc shape.

The armrest pad 20 is rotated about the first axis P1 within a range of 90 ° to switch between the use position and the storage position, and the stopper member 46 restricts the rotation range of the armrest pad 20 between the two positions. .
That is, the armrest pad 20 is in the storage position with the protrusion 25 abutting against the inner upper end of the stopper member 46 in FIG. 7, and the armrest pad with the protrusion 25 abutting against the inner lower end of the stopper member 46. 20 is in the use position.

  In the armrest 10, the protrusion 25 is provided on the surface of the armrest pad 20 facing the first support bracket 40, and the stopper member 46 is provided on the surface of the first support bracket 40 facing the armrest pad 20. The stopper member 46 may be disposed on the armrest pad 20 side, and the protrusion 25 may be disposed on the first support bracket 40 side.

[First support bracket: reinforcement support member]
FIG. 8 is a rear view of the reinforcing support member 47 as viewed from the rear. As shown in FIGS. 2 and 8, the reinforcing support member 47 is a long flat plate, and is fixed to the rear surface of the first wall portion 421 and below the boss 41 in a state where the longitudinal direction thereof is along the left-right direction. Has been.
The end surface of the right end portion of the reinforcing support member 47 is a support portion 471 that abuts on the outer peripheral surface of one end portion (lower end portion) of the stopper member 46. The end portion of the stopper member 46 with which the support portion 471 comes into contact is the end portion where the protrusion 25 is located when the armrest pad 20 is in the use position.

  The shape seen from the rear of the support portion 471 is concave in a semicircular shape so as to be in close contact with the outer peripheral surface of the semicircular arc that protrudes outward at the lower end of the stopper member 46. When the protrusion 25 abuts on the inner peripheral surface of the lower end portion of the stopper member 46, the protrusion 25 has a large area based on the plate thickness of the first wall portion 421 and the plate thickness of the reinforcing support member 47. The stopper member 46 is supported from the side. If the reinforcing support member 47 is not present, the stopper member 46 is supported by a narrow area based only on the plate thickness of the first wall portion 421, and the protrusion 25 is brought into contact with one end portion of the stopper member 46. The contact force may concentrate on a narrow area based only on the plate thickness of the first wall portion 421 and the resin stopper member 46 may be crushed or damaged. The pressure can be dispersed to suppress and protect the stopper member 46 from being damaged.

  Further, as described above, the reinforcing support member 47 supports the end portion of the stopper member 46 on the use position side of the armrest pad 20. Since the armrest pad 20 is rotated from the stowed position to the use position so as to fall from the standing state, the protrusion 25 is applied to the lower end portion of the stopper member 46 with the inertial force based on the weight of the armrest pad 20 being applied. Therefore, the protection of the stopper member 46 is particularly necessary as compared with the end portion on the storage position side. Accordingly, the reinforcing support member 47 supports the end portion of the stopper member 46 on the use position side. However, it goes without saying that the reinforcing support member 47 may also be provided at the end of the stopper member 46 on the storage position side.

The reinforcing support member 47 is welded to the rear surface of the first wall portion 421 at two welding points W1 and W2. As shown in FIG. 2, the two welding points W <b> 1 and W <b> 2 are positioned near one end and the other end of the reinforcing support member 47, respectively, and these two welding points W <b> 1 and W <b> 2 are in the longitudinal direction of the reinforcing support member 47. The arrangement is such that the boss 41 is sandwiched in the (left-right direction).
Moreover, one welding point W1 is located on the extended line of the tangent in the lower end part of the stopper member 46 of the circular arc used as the movement locus | trajectory of the projection part 25, as shown in FIG. That is, the welding point W <b> 1 of the reinforcing support member 47 is at a position on the extension line in the pressing direction F when the protruding portion 25 comes into contact with the lower end portion as the contact portion with respect to the stopper member 46.
Thereby, even if the projection part 25 repeatedly contacts the lower end part of the stopper member 46, the reinforcement support member 47 is firmly held with respect to the first wall part 421, and durability can be improved.

  As shown in FIG. 2, a semi-oval cutout 472 and a circular opening 473 are formed at the left end portion of the reinforcing support member 47. The reinforcing support member 47 is arranged on the first wall portion 421 so that the notch 472 and the circular opening portion 473 are aligned with the two circular openings 424 and 425 provided in the first wall portion 421, respectively. Then, by welding, the reinforcing support member 47 can be attached to the correct position of the first wall portion 421 in the correct orientation.

  In addition, although the structure which positions the reinforcement support member 47 by two of the notch 472 and the circular opening part 473 was illustrated, it is not restricted to this, You may provide more notches or openings. Moreover, it is good also as a structure which positions the reinforcement support member 47 only by a some notch or only a some opening part.

  As shown in FIG. 9, the reinforcing support member 47 may have a symmetrical shape with a predetermined center line C as a reference. By using such a symmetrical shape, it is not necessary to check the front and back of the member when the reinforcing support member 47 is assembled, and it is possible to reduce the burden of the assembling work and improve the working efficiency. In addition, the mounting direction with respect to the stopper member 46 is changed so that the support portion 471 of the reinforcing support member 47 has a symmetrical shape, and the first notch 472 and the circular opening 473 are on the center line C. It is desirable to change the positions of the openings 424 and 425 on the wall 421 side.

  In the case of FIG. 9, the symmetrical shape based on the center line C along the longitudinal direction of the reinforcing support member 47 is illustrated, but the shape is not limited to this and may be a symmetrical shape based on the short direction. In that case, support portions 471 are provided at both ends in the longitudinal direction of the reinforcing support member 47, and the two portions for positioning are arranged symmetrically at the center in the longitudinal direction instead of the notches 472 and the circular openings 473. It is desirable to provide two openings.

[First support bracket: second wall]
As shown in FIG. 2, the second wall portion 422 is a semi-ellipsoidal plate-like body that is vertically bent backward with respect to the first wall portion 421. A rear end portion of the second wall portion 422 is formed in an arc shape, and a cylindrical boss 44 is integrally formed so as to protrude rightward so as to be concentric with the arc. Bolts 62 for connecting the first support bracket 40 to the second support bracket 60 are inserted into the boss 44.
In addition, the arc-shaped outer edge portion and the upper and lower outer edge portions of the second wall portion 422 and the upper and lower outer edge portions of the first wall portion 421 are perpendicular to the first wall portion 421 and the second wall portion 422, respectively. An outer peripheral wall portion 426 is formed. The first wall portion 421, the second wall portion 422, and the outer peripheral wall portion 426 are integrally formed by rolling and bending a single metal plate.
Due to the outer peripheral wall portion 426, the bracket body 42 can reduce the bending of the first wall portion 421 and the second wall portion 422 and improve the structural strength.

[First support bracket: cover body]
As shown in FIGS. 3 and 4, the cover body 43 includes a first wall portion 431 facing the first wall portion 421 of the bracket body 42 on the side opposite to the armrest pad 20, and the second support bracket 60. On the opposite side, the second wall portion 432 facing the second wall portion 422 of the bracket main body 42 and the inclined wall portion 433 inclined between the first wall portion 431 and the second wall portion 432 by 45 ° with respect to both of them. And an outer peripheral wall portion 434 raised to the bracket body 42 side along the outer edge of the first wall portion 431, the second wall portion 432, and the inclined wall portion 433, and these are a single metal plate. Are integrally formed by rolling and bending.
The outer peripheral wall portion 434 of the cover body 43 is in sliding contact with the outer peripheral wall portion 426 of the bracket main body 42 from the outside, and welding is performed everywhere on the boundary between the outer peripheral wall portion 434 and the outer peripheral wall portion 426 to cover the bracket main body 42 and the cover body 43. The body 43 is fixed to each other.

The first wall portion 431 is slightly wider than the first wall portion 421 of the bracket body 42 and has a substantially rectangular shape as a whole. The first wall portion 431 is formed with a concave portion 435 that is recessed toward the first wall portion 421 of the bracket body 42, and the first wall portion 431 is strengthened by the bent portion around the concave portion 435. ing.
In addition, an opening is formed in the substantially central portion of the first wall portion 431 so that the nut 217 for fastening the boss 41 and the bolt 23 is exposed to the side opposite to the armrest pad 20.

Moreover, as shown in FIG. 6, the double wall structure is formed by the 1st wall part 421 of the bracket main body 42, and the 1st wall part 431 of the cover body 43, and the stopper member 46 and the projection part 25 are cover. The body 43 is shielded from the outside by the first wall portion 431 of the body 43. For this reason, the stopper member 46 is protected from the outside, and the protrusion 25 is not interfered from the outside, so that the armrest pad 20 can be favorably rotated.
Note that an opening 436 is formed in the first wall portion 431 of the cover body 43 at an opposite position behind the stopper member 46, and the protrusion 25 is properly inserted from the outside of the cover body 43 into the stopper member 46. It is possible to confirm visually.

The second wall portion 432 has a slightly wider vertical width than the second wall portion 422 of the bracket body 42 and is generally semicircular. In addition, an opening is formed in the substantially central portion of the second wall portion 432 so that the bolt 62 that connects the first support bracket 40 to the second support bracket 60 is exposed to the side opposite to the second support bracket 60. Is formed.
Further, the second wall portion 422 of the bracket body 42 and the second wall portion 432 of the cover body 43 form a double wall structure.
A cylindrical boss 44 is attached between the second wall portion 422 of the bracket body 42 and the second wall portion 432 of the cover body 43 by welding so as to be sandwiched therebetween (see FIG. 10).

  The inclined wall part 433 connects the first wall part 431 and the second wall part 432 in a state of extending straight in a direction inclined by 45 ° between the first wall part 431 and the second wall part 432. doing. For this reason, it is possible to effectively suppress bending of the bracket main body 42 and the first wall portions 421 and 431 and the second wall portions 422 and 432 of the cover body 43 in a contacting / separating direction, thereby dramatically improving rigidity. Can be planned.

  Moreover, since the cover body 43 forms a double wall structure in cooperation with the bracket main body 42 and has the outer peripheral wall portions 426 and 434 fixed to each other, the cover body 43 has the first wall portions 421 and 431 and It is possible to dramatically increase the configuration of the entire first support bracket 40 including bending in the direction in which the second wall portions 422 and 432 come into contact with and away from each other.

[First support bracket: connecting reinforcement member]
As shown in FIGS. 3 and 4, the two connection reinforcing members 45, 45 are both inclined by 45 ° between the first wall portion 431 and the second wall portion 432 of the cover body 43. This is a long flat plate that connects the first wall portion 431 and the second wall portion 432 in a state of extending straight. Each connection reinforcing member 45, 45 is fixed by welding between the first wall portion 431 and the second wall portion 432 in a state where the respective flat plate surfaces are horizontal, A concave portion having a flat plate surface is formed to enhance the rigidity.

Further, the two connection reinforcing members 45, 45 are arranged with the bolts 23 sandwiched in the vertical direction.
Further, the two connection reinforcing members 45 and 45 are integrally integrated by connecting the end portion on the second wall portion 432 side by the connection portion 451. The connecting portion 451 is a flat plate parallel to the second wall portion 432 and is disposed so as to be in close contact with the second wall portion 432.
Further, as shown in FIG. 4, the connection portion 451 is formed with two positioning cutouts 452 and 452. The notches 452 and 452 are respectively aligned with the circular openings provided in the second wall portion 432 of the cover body 43, thereby optimizing the positions and orientations of the two connection reinforcing members 45 and 45. Can be done. In addition, it is good also as an opening not only in a notch.

The connection reinforcing members 45, 45 connect the first wall portion 431 and the second wall portion 432 in a state of extending straight in a direction inclined by 45 ° between the first wall portion 431 and the second wall portion 432. doing. For this reason, it is possible to effectively suppress bending of the bracket main body 42 and the first wall portions 421 and 431 and the second wall portions 422 and 432 of the cover body 43 in a contacting / separating direction, thereby dramatically improving rigidity. Can be planned.
Further, since the connection reinforcing members 45 and 45 are integrally connected by the connection portion 451, the rigidity can be increased so that the bending between the connection reinforcement members 45 and 45 and the connection portion 451 is reduced. is there. Furthermore, the connection strength with the second wall portion 432 can be increased by the connection portion 451.

[Second support bracket]
FIG. 10 is a cross-sectional view of the first support bracket 40 and the second support bracket 60 in a cross-sectional view along a vertical upper and lower portion including the second axis P2 when the armrest 10 is in use.
As shown in FIG. 10, the second support bracket 60 includes an inner hollow casing 61 fixed to the right side surface of the right back side frame 121 by a plurality of legs 611 by welding, the first support bracket 40, and the like. A long bolt 62 connecting the second support bracket 60, a retaining 63 of the bolt 62 inserted on the opposite side of the boss 44 from the second supporting bracket 60, and a head of the retaining 63 and the bolt 62. A washer 64 that is inserted between the coil spring 65, a torsion coil spring 65 that presses the armrest pad 20 in a direction to rotate upward, a spring seat 66 that holds one end of the coil spring 65 in the casing 61, and a casing 61 And a spring receiver 67 pressed against the coil spring 65.

The casing 61 is a cylindrical container having one end closed and the other end open, and the end surface 612 on the closing side faces the first support bracket 40, and a plurality of legs are formed from the end on the opening side. The part 611 extends toward the right side surface of the back side frame 121.
The center of the end surface 612 on the closing side of the casing 61 is wide open, and the bolt 62 is loosely inserted.

  The bolt 62 has a head portion at one end, a shaft portion in the middle, and a screw portion in which a male screw is formed on the outer periphery of the tip of the other end portion. The bolt 62 is inserted into the boss 44 of the first support bracket 40 from the opposite side (left side) to the second support bracket 60, and penetrates the first support bracket 40. Then, it is loosely inserted into the opening of the casing 61.

  The retainer 63 includes a cylindrical large-diameter portion that surrounds the periphery of the head of the bolt 62, a small-diameter portion that is inserted inside the boss 44, and a flange portion that connects the large-diameter portion and the small-diameter portion. ing. The shaft of the bolt 62 is loosely inserted into the small diameter portion, and the head is in contact with the flange portion via the washer 64.

In the casing 61, a spring seat 66 is fixed to the inner surface of the end surface 612 by welding. The spring seat 66 has an opening formed at the center thereof, and has a cylindrical portion 661 raised from the opening toward the right.
The cylindrical portion 661 is inserted into the coil portion of the torsion coil spring 65, and the spring seat 66 holds one end portion of the torsion coil spring 65 in this state.

A dish-shaped spring receiver 67 is disposed at the other end of the torsion coil spring 65. The spring receiver 67 has a through-hole into which the shaft portion of the bolt 62 is inserted at the center. A nut 68 is fastened to the shaft portion of the bolt 62 on the opposite side (right side) of the torsion coil spring 65 in the spring receiver 67. ing.
That is, the bolt 62 includes a washer 64, a retaining member 63, a first support bracket 40, an end surface 612 of the casing 61, a spring seat 66, a torsion coil spring 65, and a spring receiver 67 between the head and the nut 68 of the screw portion. In this state, the nut 68 is fastened and interposed. Further, the bolt 62 is arranged so that the center thereof is on the same line as the second axis P2.

Further, the other end portion of the torsion coil spring 65 is connected to a spring receiver 67, and a pressing force is applied to the first support bracket 40 from the spring receiver 67 through the bolt 62 in the direction of rotating upward by the torsion coil spring 65. Has been.
The pressing force of the torsion coil spring 65 is not a force that causes the first support bracket 40 and the armrest pad 20 to jump upward, but a resistance force when the first support bracket 40 and the armrest pad 20 are tilted forward. It is a force that is applied and causes the tilting operation to be performed slowly. That is, the torsion coil spring 65 functions as a damper when the first support bracket 40 and the armrest pad 20 are rotated.

  The spring receiver 67 contacts a stopper (not shown) provided on the spring seat 66 and rotates around the second axis P <b> 2 of the first support bracket 40 with respect to the second support bracket 60 in the storage position of the armrest 10. The rotation is restricted within the range from the position to the rotation position around the second axis P2 of the first support bracket 40 with respect to the second support bracket 60 at the use position of the armrest 10.

[Operation of armrest]
From the state where the armrest pad 20 is erected and the armrest 10 is in the storage position in the rearward armrest 10, the armrest 10 has the first support bracket 40 forward about the second axis P2 with respect to the second support bracket 60. And the armrest pad 20 is deployed 90 ° to the right about the first axis P1 with respect to the first support bracket 40, so that the armrest pad 20 is deployed and the armrest 10 is in the use position state. Can be switched to.
Further, when the armrest pad 20 is in the use position in the armrest 10, the armrest pad 20 is raised by rotating 90 ° to the left around the first axis P1 with respect to the first support bracket 40 from the deployed state. The first support bracket 40 is lifted rearward by rotating 90 ° rearward around the second axis P2 with respect to the second support bracket 60, and switched to the storage position in the armrest 10.

[Effects of Embodiments of Invention]
In the armrest 10, a nut 217 as a fastening member that connects the armrest pad 20 and the first support bracket is disposed outside the armrest pad 20, that is, on the opposite side to the armrest pad 20 in the first support bracket 40. Yes.
For this reason, since the nut 217 can be observed from the outside without being embedded in the armrest pad 20, when the armrest 10 is assembled, the fastening state of the nut 217 can be easily visually recognized from the outside. Become.

  Further, since the fastening member for fastening the bolt 23 as a screw shaft extending to the outside from the armrest pad 20 is the nut 217, the first support bracket 40 on the outside thereof is not embedded in the armrest pad 20. When arranged on the side, a space can be easily secured. Accordingly, the first support bracket 40 can be downsized.

  Further, since the armrest pad 20 of the armrest 10 is provided with a bolt 23 as a screw shaft so as to be concentric with the first axis P1, the bolt 23 that connects the armrest pad 20 and the first support bracket 40 is attached to the armrest. It can also be used as the rotational axis of the pad 20, and the number of parts can be reduced.

  Further, since the first support bracket 40 of the armrest 10 is equipped with the boss 41 for inserting the tip of the bolt 23 as a screw shaft fixed to the bracket main body 42 of the first support bracket 40, the first support bracket 40 is supported by a flat plate. In comparison, the bolt 23 can be stably supported so as not to wobble and the like, and the armrest pad 20 can be favorably rotated.

  The armrest pad 20 of the armrest 10 includes a cylindrical body 21 into which a bolt 23 as a screw shaft is inserted into the armrest pad 20, and a collar 213 for positioning at both ends of the bolt 23 around the bolt 23. , 215 are arranged, it becomes easy to align the center of rotation of the armrest pad 20 to a desired position, and it is possible to suppress rotational shake and the like and realize a favorable rotation operation of the armrest pad 20.

Further, since the armrest pad 20 of the armrest 10 has a washer 216 interposed between the tip of the bolt 23 and the nut 217, when the nut 217 is fastened, the washer 216 is prevented from rotating and can be prevented from loosening. It becomes.
Further, it is possible to prevent damage between the bolt 23 and the nut 217 and protect the member.

The armrest 10 is provided on the opposing surface of the armrest pad 20 on the first support bracket 40 side, and on the opposing surface of the first support bracket 40 on the armrest pad 20 side. The stopper member 46 that restricts the rotation range of the armrest pad 20 by the contact of the armrest pad 20 and the reinforcement that supports the stopper member 46 from the outer side opposite to the protruding portion 25 at the lower end portion where the protruding portion 25 contacts the stopper member 46 And a support member 47.
For this reason, the pressure applied to the stopper member 46 due to the contact of the protruding portion 25 can be distributed not only to the first wall portion 421 of the bracket main body 42 but also to the reinforcing support member 47, thereby avoiding damage to the stopper member 46. Thus, it is possible to protect effectively.

Further, in the first support bracket 40 of the armrest 10, since the reinforcing support member 47 has the positioning notch 472 and the opening 473, the reinforcing support member 47 is easily aligned with the mounting position with respect to the stopper member 46. As a result, the assembling work can be performed easily and quickly.
Furthermore, since the reinforcing support member 47 can be adjusted to an appropriate position, the stopper member 46 can be protected more effectively.

  Further, since the first support bracket 40 of the armrest 10 has the reinforcing support member 47 in a plate shape and has the same shape even when the front and back are reversed, the reinforcing support member is attached to the bracket body 42 without checking the front and back. 47 can be attached, and the assembling work can be facilitated and speeded up.

  Further, in the first support bracket 40 of the armrest 10, the reinforcement support member 47 has a support portion 471 having a shape that follows the outer shape of one end portion with which the protrusion 25 that is the contact portion of the stopper member 46 abuts. The support member 471 of the support member 47 can support the stopper member 46 in a wide area, and the protection by avoiding damage to the stopper member 46 can be achieved more effectively.

  In addition, the reinforcement support member 47 of the armrest 10 is a welding point W1 that is on the extension line in the pressing direction when the projection 25 comes into contact with one end as the contact portion with which the projection 25 comes into contact with the stopper member 46. Since it is fixed, even when the reinforcing support member 47 receives a pressing force due to the contact of the protrusion 25, the attachment state can be firmly maintained, and the occurrence of peeling and dropping of the reinforcing support member 47 can be reduced. It is possible to extend the life of the mechanism and improve the maintainability and reliability.

Further, since the first support bracket 40 of the armrest 10 forms a double wall structure by the bracket main body 42 and the cover body 43, the stress due to the rotation between the storage position of the armrest pad 20 and the use position is prevented. Therefore, the amount of deformation of the first support bracket 40 can be reduced, and a stable rotation operation with little wobble can be performed.
Furthermore, since the stopper member 46 is provided inside the first wall portion 431 of one of the double walls, the stopper member 46 and the protrusion 25 that moves within the stopper member 46 interfere with an external object. Therefore, the stopper member 46 and the protruding portion 25 can be protected, and a good operation of the protruding portion 25 can be maintained.

  The reinforcement support member 47 of the armrest 10 is fixed to the bracket body 42 of the first support bracket 40 at two welding points W1 and W2 across the first axis P1 in the longitudinal direction of the reinforcement support member 47. Therefore, the two welding points W1 and W2 can be arranged at positions close to the same circumference around the first axis P1. Therefore, the reinforcing support member 47 is resistant to the two welding points W1 against the pressing force in the tangential direction of the circumference around the first axis P1 that is generated when the protruding portion 25 abuts against the stopper member 46. , W2 can firmly maintain the mounting state, reduce the occurrence of peeling and dropping of the reinforcing support member 47, and increase the service life of the mechanism and improve the maintainability and reliability.

  Further, the first support bracket 40 of the armrest 10 has a first wall portion 421 where the bracket body 42 is connected to the armrest pad 20 and a second wall portion 422 where the second support bracket 60 is connected bent at a right angle. Since the first wall portion 421 and the second wall portion 422 are separate members, the number of parts such as members for connection while maintaining a constant connection strength is reduced. It is possible to reduce the manufacturing cost and improve the productivity.

  In addition, since the first support bracket 40 of the armrest 10 includes the connection reinforcing members 45 and 45 that connect the first wall portion 431 and the second wall portion 432 of the cover body 43, the armrest pad 20 is stored and used. It is possible to reduce the amount of deformation of the first support bracket 40 with respect to the stress caused by the rotation between the positions and perform a stable rotation operation.

  Further, in the first support bracket 40 of the armrest 10, the connection reinforcing members 45, 45 are linear, and both end portions thereof are connected inside the first wall portion 431 and the second wall portion 432 of the cover body 43. Therefore, the connection reinforcing members 45 and 45 are unlikely to be bent, and the deformation amount of the first support bracket 40 is further reduced with respect to the stress caused by the rotation between the storage position of the armrest pad 20 and the use position. A stable rotation operation can be performed.

  Further, in the first support bracket 40 of the armrest 10, since the connection reinforcing members 45, 45 are provided with the connection reinforcing members 45, 45 on both sides of the bolt 23 that is a screw shaft, the stress transmitted from the armrest pad 20. Can be suppressed in a balanced manner from both sides, and the amount of deformation of the first support bracket 40 can be further reduced, and a further stable rotation operation can be performed.

  Further, in the first support bracket 40 of the armrest 10, the connection reinforcing members 45, 45 are integrally connected by the connection portion 451, so that the deformation of the connection reinforcement members 45, 45 in the falling direction on the connection portion side is deformed. As a result, the amount of deformation of the first support bracket 40 is further reduced with respect to the stress due to the rotation between the storage position and the use position of the armrest pad 20, and a more stable rotation operation is achieved. Can be done.

  Further, in the armrest 10, the protrusion 25 is provided on the surface of the armrest pad 20 facing the first support bracket 40, and the stopper member 46 is provided on the surface of the first support bracket 40 facing the armrest pad 20. It is possible to easily confirm from the first support bracket 40 side whether the protrusion 25 is properly engaged with the stopper member 46.

  Further, in the first support bracket 40 of the armrest 10, the stopper member 46 regulates the rotation operation of the armrest pad 20 within the range from the storage position to the use position. And the use position can be easily stopped, and the switching operation between the storage position and the use position can be performed easily and satisfactorily.

  Further, in the first support bracket 40 of the armrest 10, the first wall portion 421 and the second wall portion 422 of the bracket body 42 are integrated in a state of being bent at a right angle, and the stopper member 46 is formed of the first wall. Since the portion 421 is provided at the end opposite to the second wall portion 422, the strength of the connecting portion between the first wall portion 421 and the second wall portion 422 can be maintained high, and the armrest pad 20. The amount of deformation of the bracket main body 42 can be reduced with respect to the stress caused by the rotation between the storage position and the use position, and a stable rotation operation can be performed.

  Further, in the first support bracket 40 of the armrest 10, the boss 41 is provided at a position between the second wall portion 422 and the stopper member 46 in the first wall portion 421 of the bracket body 42 of the first support bracket 40. Therefore, the boss 44 can be disposed in the vicinity of the second wall portion 422 without being obstructed by the stopper member 46, and the stress caused by the rotation between the storage position of the armrest pad 20 and the use position can be prevented. It is possible to reduce the amount of deformation of the first support bracket 40 and perform a stable rotation operation.

  Further, in the first support bracket 40 of the armrest 10, the opening 43, which allows the protrusion 25 to be visually recognized, is provided in the cover body 43, so that the stopper member 46 is provided in the first wall 431 of the cover body 43 by a double wall structure. Even in a state where is blocked, it is possible to easily confirm the engagement state of the protrusion 25 with the stopper member 46.

  Further, in the first support bracket 40 of the armrest 10, the stopper member 46 is made of resin, so that the noise generated when the protrusion 25 slides or abuts inside is made as compared with the case where the stopper member 46 is made of metal. Generation | occurrence | production can be reduced and it becomes possible to aim at silence at the time of rotation of the armrest pad 20. FIG.

  Further, the armrest pad 20 of the armrest 10 includes a cylindrical body 21 that rotates about the first axis P1, and the cylindrical body 21 is fixedly equipped with a plate portion 24 that faces the first support bracket 40. Since the protruding portion 25 is supported by the plate portion 24, for example, even when a flexible material such as a resin is used as the surface material of the armrest pad 20, the protruding portion 25 is firmly supported by the plate portion 24. It is possible to satisfactorily regulate the rotation operation of the armrest pad 20 by the portion 25 and the stopper member 46.

  In the first support bracket 40 of the armrest 10, a stopper member 46 is inserted and installed in an opening 423 provided in the bracket body 42, and the position of the stopper member 46 in the insertion direction is set on the outer periphery of the stopper member 46. Since the nail | claw part 461 to determine is provided, if the stopper member 46 is inserted with respect to the opening part 423, the nail | claw part 461 will contact | abut the circumference | surroundings of the opening part 423, and can be stopped at an appropriate position. For this reason, the claw portion 461 allows the stopper member 46 to be attached with an appropriate push-in amount, and allows the work to be performed without paying great attention to the push-in amount, thereby reducing the work load.

DESCRIPTION OF SYMBOLS 10 Armrest 20 Armrest pad 21 Cylindrical body 211 Inner cylinder 212 Outer cylinder 213, 214, 215 Collar 216 Washer 217 Nut (fastening member)
23 Bolt (screw shaft)
235 Screw part 24 Plate part 25 Projection part 40 First support bracket 41 Boss 42 Bracket main body 421 First wall part 422 Second wall part 423 Opening part 424, 425 Opening part 43 Cover body 431 First wall part 432 Second wall Portion 436 Opening 44 Boss 45 Connection reinforcement member 451 Connection portion 46 Stopper member 461 Claw portion 47 Reinforcement support member 471 Support portion 472 Notch 473 Opening portion 60 Second support bracket 100 Seat 121 Backside frame P1 First shaft P2 Second Axis W1, W2 Welding point

Claims (6)

Rotating about a first axis that is provided on the side of the seat and deploys the armrest pad in the width direction of the seat, and enables rotation about a second axis along the width direction of the seat In the armrest that supports the armrest pad,
The armrest pad;
A first support bracket that rotatably supports the armrest pad about the first axis;
A second support bracket that rotatably supports the first support bracket about the second axis;
With
An armrest characterized in that a fastening member for connecting the armrest pad and the first support bracket is disposed outside the armrest pad.   The armrest according to claim 1, wherein the fastening member is a nut that fastens a screw shaft extending outward from the armrest pad.   The armrest according to claim 2, wherein the screw shaft is provided to be concentric with the first shaft.   4. The armrest according to claim 2, wherein a boss for inserting a tip end portion of the screw shaft is fixed to the first support bracket. 5. The screw shaft is a long bolt,
The armrest pad incorporates a cylindrical body for inserting the bolt,
The armrest according to any one of claims 2 to 4, wherein a collar for positioning the bolt is provided at both ends of the bolt.   The armrest according to claim 5, further comprising a washer interposed between a tip portion of the bolt and the nut.

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