JPH07194462A - Vehicle seat armrest mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To prevent the armrest of a vehicle seat from becoming an obstacle when the occupant disembarks and transfers to the next seat. [Structure] The hinge pin (21A) (21) is attached to the support shaft (1) for attaching the armrest (A) to the seat back (SB).
B) automatically attachable in the lateral direction, engage with either the armrest (A) or the hinge pin (21A) (21B) side with each other, and escape by a certain load or more applied to the armrest (A). Joint part (4
0), and the engaged portion (30) is provided on the other side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armrest for a vehicle seat such as an automobile.

[0002]

2. Description of the Related Art In a conventional seat, an armrest is attached to a support shaft horizontally projecting laterally from a side surface of a seat back (backrest part), and the armrest is vertically mounted on the support shaft. It is rotatably attached to the shaft and is held horizontally when it is used, and when it is not in use such as when getting on and off the seat, it is rotated upright and stored along the side surface of the seat back.

[0003]

By the way, since the armrest is attached to the support shaft of the seat back so as to be rotatable in the vertical direction, when getting on and off the seat having the armrest, or transferring to the adjacent seat. At this time, it is necessary to rotate the armrest from the used state to the stored state. Therefore, when getting off the vehicle in a hurry or when transferring to another seat, the operation is troublesome, and there is a problem that the getting-off property and the transferability are impaired. Therefore,
It is an object of the present invention to prevent an armrest in use from becoming an obstacle when getting off a seat or transferring to an adjacent seat.

[0004]

SUMMARY OF THE INVENTION To achieve the above object, the present invention has a hinge pin vertically attached to a support shaft for horizontally protruding laterally from a side surface of a seat back and mounting an armrest. , An armrest is attached to the hinge pin so as to be rotatable in the horizontal direction, and one of the hinge pin and the armrest is used as a locking engagement portion, and the other is engaged with the engagement portion and applied to the armrest at a certain level or more in the lateral direction. It is characterized in that an engaged portion which is engaged and disengaged by a load is provided.

When the lock engaging portion provided on one of the armrest and the hinge engages with the engaged portion provided on the other, the horizontal rotation of the armrest is restricted, and the armrest is used. State is retained. Then, push the armrest laterally with your elbows and upper body,
The engaged portion comes out of the engaging portion and the armrest pivots in the lateral direction, whereby one side surface side of the seated person is opened.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an armrest (A) attached to a support shaft (1) horizontally projecting laterally from a side surface of a seatback (SB) by an armrest attachment structure according to the present invention, and the armrest (A) is the same as a conventional one. Up and down (Y
Direction) and can be stored in an upright state, and by the structure according to the present invention, it can rotate in the horizontal direction (X direction) to improve the mobility of the seated person from the seat. In the figure (SC)
Indicates a seat cushion.

2 and 3 show a first embodiment of the present invention,
In the figure, (50) shows a part of a pipe-made back frame of the seat back (SB), and this back frame (50)
The bracket (51) is welded to the
In (1), a support shaft (1) made of a bolt is fixed via connecting members (52) (53) (54) so as to horizontally (outwardly) project from the outer surface of the seat back. There is. The support shaft (1) is provided with a movable part (2) for rotatably mounting the armrest (A) in the vertical direction, and the movable part (2) is rotatably inserted into the support shaft (1). The horizontal cylinder (20C) and the vertical cylinders (20A) and (20B) integrally and orthogonally provided on the upper and lower sides of the horizontal cylinder (20C). The upper and lower vertical cylinders (20A) and (20B). Hinge pins (21A) and (21B) are integrally provided at the tip of the.

Reference numerals (60) and (61) in the figure show the frame of the armrest (A) consisting of an upper frame (60) and a lower frame (61) which are welded to each other and have a rectangular tubular shape. Through holes (60A) (61A) through which the hinge pins (21A) (21B) are rotatably inserted are provided on the rear side of the frames (60) (61), and the through holes of the upper frame (60) are provided. A lock hole (30), which is an engaging portion made of a slit, is connected to and formed at (60A).

On the other hand, a prismatic shaft portion (20D) is provided between the hinge pin (21A) and the vertical cylinder (20A), and the shaft portion (20D) has a square hole for the engaging element (40B). An engaging protrusion (40A) that is inserted through the engaging member (40B) and that engages with the lock hole (30) in the engaging element (40B) and that is released from the lock hole (30) by a lateral load applied to the armrest above a certain level. Is provided so that the engaging protrusion (40A) engages with the lock hole (30).
The compression spring (40C) wound around the vertical cylinder (20A) is always urged upward by the elastic force. The above engagement protrusion (40A) is an engagement element (40B), compression spring (40C).
Is the engaging portion (40). 2 and 3, (11)
Is a threaded portion of the support shaft (1) screwed to the connecting member (54), and (12) in the figure is a collar.

Upper and lower frames (60) (61)
Are covered with a cushion body and a skin (neither is shown) to form an armrest (A). The armrest (A) is rotatably supported in the vertical direction because the horizontal cylinder (20C) is rotatably attached to the support shaft (1), and thus the armrest (A) is in the horizontal state as shown in FIG. The state is held from the state to the standing state which is the stored state, and this holding state is performed by a lock device (not shown).

Further, as shown in FIG. 3, when the armrest (A) is in use, the engaging projection (40A) of the engaging element (40B) is engaged with the lock hole (30).
The armrest (A) is locked to the vertical cylinder (20A). Then, when the seated person sitting on the seat back (SB) and seat cushion (SC) pushes the armrest (A) outward in the lateral direction by the elbow, upper body, etc., the engaging projection (40A) is exerted by the force. Escape from the lock hole (30). As a result, the upper and lower frames (60) (61) of the armrest (A) are attached to the hinge pins (21A) (21A).
It rotates in the X direction of FIG. 1 with B) as the center of rotation. Therefore, the seat back (SB) changes its direction from the front of the seat back (SB) in use to the rear as shown by the chain line in FIG. As a result, the lateral direction of the seat back (SB) is opened, so that it is possible to easily transfer to the adjacent seat or the like.

4 and 5 show a second embodiment of the present invention,
In such an embodiment, the upper frame (6) of the armrest (A) is
0) and the movable part (2 ') integrally provided with the engaged part (31) and the hinge pin (21A) (21B) pivotally attached to the support shaft (1) in the up and down direction. 41) are provided respectively, and the engaged portion (31) is the upper frame (6).
0) fastened to the inner wall of the upper part (31A) and the lower part (31A)
B) is a bifurcated leaf spring, and the lower part (31B) is formed so as to project outward with respect to the inner wall of the upper frame (60) with respect to the upper part (31A). The plate-shaped engaging element (41) integral with the movable portion (2 ′) engages with the gap (31C) between (31A) and (31B). This engaging element (41) is used as an engaging portion.

The movable part (2 ') is formed in a rectangular tube shape, and integrally has hinge pins (21A) and (21B) above and below the movable part (2'). 41)
A plate (24) having the same shape as that of the engaging member (4)
1) and the side surface of the plate (24) have stopper pins (2
3A) and (23B) are provided, and the stopper pin (2
3A) (23B) is connected to the back frame by the connecting member (5
By connecting to the cam (54) integrally connected via 4), the armrest (A) is restricted from rotating in the vertical direction, and the used state and the stored state are maintained.

The above-mentioned engaging element (41) has an engaged portion (3
The armrest (A) is locked to the movable portion (2 ') by elastically sandwiching it between the upper and lower parts (31A) and (31B) of the configuration 1). The engaging element (41) is engaged with the armrest (A) by pushing the armrest (A) in the lateral direction as described above (by a load applied in the lateral direction above a certain level) so as to escape from the engaged portion (31). I am fit.

The movable part (2 ') is provided with through holes (22) and (22) through which the support shaft (1) is rotatably inserted, and is screwed into the screw part (54A) of the connecting member (54). Nuts to wear (13)
Is positioned at a predetermined position on the support shaft (1). In the figure, (14), (15) and (16) are collars, and the same reference numerals as those used in the above-described embodiments indicate the same or similar members.

Thus, in the second embodiment as well as in the first embodiment, when a certain amount or more in the lateral direction is applied to the armrest (A), the engaging element (41) is released from the engaged portion (31). hand,
From the use state of the armrest (A) shown by the solid line in FIG.
It is rotated by 80 degrees in the horizontal direction to be in the state shown by the chain line.

FIGS. 6, 7 and 8 show a third embodiment of the present invention, in which the upper frame (60) of the armrest (A) is a plate bent in a V shape as an engaging portion. An engaging element (32) made of a spring is provided, and a notch (4) is formed by cutting out the V-shaped movable portion (2 ″) where the engaging element (32) engages.
The case where the engaged portion consisting of 2) is provided is shown.

The notch portion (42) is an upper plate portion (2) of the movable portion (2 ") formed by bending the plate in a U shape.
6A), and hinge pins (21) are provided on the outer surfaces of the upper plate portion (26A) and the lower plate portion (26B).
A) (21B) and through holes (22) for inserting the support shaft (1) in the side plate portion (26C), respectively.

Further, on the side plate portion (26C) of the movable portion (2 "), the operation shaft (72) for adjusting the height of the armrest (A) is rotated laterally. A relief groove (25) is provided to prevent contact between the operation shaft (72) and the nut (73) of the lower frame (61).
The armrest (A) is adjusted by screwing it into the armrest (A) by rotating the operation handle (71) so that the tip of the armrest (A) abuts on the peripheral surface of the cam (56). In FIGS. 6 and 8, the same reference numerals as those in the above-mentioned embodiment indicate the same members.

Similarly to the above-described embodiment, the engaging element (32) is also released from the notch (42) by applying a certain lateral load to the armrest (A) and the armrest (A) is leveled. It is attached so as to rotate in the direction as shown in FIG.

[0021]

According to the present invention, the armrest is horizontally rotated outward by applying a load laterally above a certain level, such as pushing the armrest by the seated person's elbow or upper half of the body. . Therefore, since the side direction of the seat is opened without being blocked by the armrest, the dismountability is good and the transferability to the adjacent seat is improved. In particular,
Improves the ability to get off in an emergency.

[Brief description of drawings]

FIG. 1 is a perspective view of an automobile seat using a structure according to the present invention.

FIG. 2 is an exploded perspective view of essential parts showing a first embodiment of the present invention.

FIG. 3 is a sectional view of the same.

FIG. 4 is an exploded perspective view of essential parts showing a second embodiment of the present invention.

FIG. 5 is a partial sectional view of the same.

FIG. 6 is an exploded perspective view of essential parts showing a third embodiment of the present invention.

7 is a partially enlarged view of FIG.

FIG. 8 is a partial sectional view showing a third embodiment of the present invention.

[Explanation of reference symbols] SB seat back A armrest 1 spindle 21A hinge pin 21B hinge pin 32 engaging portion 40 engaging portion 41 engaging portion 30 engaged portion 31 engaged portion 42 engaged portion

Claims (1)

[Claims] 1. A hinge pin is vertically attached to a support shaft horizontally projecting laterally from a side surface of a seat back for mounting an armrest, and the armrest is attached to the hinge pin so as to be horizontally rotatable. One of the hinge pin and the armrest is provided with a locking engaging portion, and the other is provided with an engaged portion that engages with the engaging portion and is disengaged by a lateral load applied to the armrest above a certain level. The vehicle seat armrest mounting structure.