JPH0511861U - Vehicle seat armrest structure - Google Patents

Abstract

(57) [Summary] [Purpose] The structure is simple and the operability of the armrest is good,
Even in the event of a collision, the armrests in the storage position are prevented from jumping forward. [Structure] Hinge brackets 6 fixed to the frame of the seat back 3 extend to both side surfaces of the armrest 4. The hinge pin 8 is inserted through the armrest 4 and fixed to the armrest 4. The hinge bracket 6 is provided with a hole 9 through which the hinge pin 8 is inserted. The hole 9 is formed by connecting a first hole 12 which is a vertical hole on the upper side and a second hole 13 which has a substantially semicircular shape on the lower side. Hinge pin 8
Has a vertically long flat plate shape only in a portion 8a through which the hole 9 is inserted. The hinge pin 8 is constantly urged upward by the spring 10. The second hole 13 has an abutting portion 13a above which the flat plate-shaped portion 8a abuts when the armrest 4 is in the use position.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an armrest structure in which an armrest in a storage position does not jump forward even in a collision.

[0002]

[Prior Art]

 Conventionally, as an armrest structure of a vehicle seat, a structure as described in Japanese Utility Model Laid-Open No. 58-79433 has been known. That is, as shown in FIG. 8, in a reclining seat including a seat cushion 40, a seat back 41, and an armrest 42 provided on the seatback 41, the armrest 42 is arranged in a direction of an arrow with respect to the seatback 41. It is rotatable. The upper end of the arm rest 42 is provided with a pull tab 43 for releasing the engagement of the armrest 42 with the seat back 41.

As shown in FIG. 9, armrest mounting shafts 45 for mounting the armrests 42 are fixed to side panels 44 provided on both sides of a frame (not shown) of the seatback 41. A cylindrical shaft 47 provided on the armrest body 46 is rotatably supported by an armrest mounting shaft 45. In the armrest body 46, the pull tab 43 is connected to the lock pin 50 via a wire 48 and a bell crank-shaped link 49. The lock pin 50 is adapted to be removably engaged with any one of a number of lock holes 51 arranged in an arc shape on the side panel 44 with the arm rest mounting shaft 45 as a center. Therefore, the armrest 42 could be adjusted to a desired angle with respect to the seatback 41.

Further, even when the armrest 42 is in the storage position, the armrest 42 is locked to the seatback 41 by the lock pin 50, so that the armrest 42 does not jump forward even at the time of a collision.

[0005]

[Problems to be solved by the device]

 However, in the above-described vehicle seat armrest structure, the number of parts is large, and the armrest must be moved with the puller pulled up, and the operability is not so good.

In view of the above points, the present invention provides an armrest structure for a vehicle seat that is simple in structure, has good operability of the armrest, and does not cause the armrest in the storage position to jump forward even in the event of a collision. The purpose is to do.

[0007]

[Means for Solving the Problems]

 The vehicle seat armrest structure of the present invention comprises a seat cushion, a seat back, an armrest, and a hinge shaft fixed to the armrest and capable of rotating the armrest with respect to the seatback. In an armrest structure for a vehicle seat, a bracket having a hole through which the hinge shaft is inserted is provided, and a portion of the hinge shaft through which the hole is inserted has a vertically long flat plate shape. The first hole, which is a vertical hole, and the second hole, which is wider than the first hole below, are connected to each other. The second hole has an abutting portion on the upper portion, with which the hinge shaft abuts. The hinge shaft is non-rotatable in the first hole and rotatable in the second hole, and the hinge shaft is always urged upward by an elastic member. And

[0008]

[Function of the device]

 The present invention is configured as described above, and when the armrest is in the storage position, the hinge shaft is always urged upward by the elastic member and is located in the first hole, and therefore cannot rotate. .. Also, when rotating the armrest to the use position, the armrest itself is pushed down, the hinge shaft is moved to the second hole, and if it is rotated forward as it is, the hinge shaft is moved upward by the elastic member. It moves and is pressed against the contact portion of the second hole.

[0009]

[Effect of the device]

 As described above, according to the present invention, the structure is simple, the rigidity is high, the operability of the armrest is good, and the armrest in the storage position does not jump forward even in the event of a collision.

[0010]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1, a rear seat 1 is composed of a seat consisting of a pair of left and right seat cushions 2 and a seat back 3, and a rotatable armrest 4 is provided at the center thereof. A recess 5 for accommodating the armrest 4 is provided between the seatbacks 3.

As shown in FIG. 2, hinge brackets 6 fixed to a frame (not shown) of the seat back 3 extend to both side faces of the armrest 4 (only one side face is shown, the other side faces are also the same). Has been configured). The hinge brackets 6 are provided in the protrusions 7 on both sides of the recess 5. The hinge pin 8 is inserted into the armrest 4 and fixed to the armrest 4. The hinge bracket 6 is provided with a hole 9 through which the hinge pin 8 is inserted, and a mounting portion 11 to which a spring 10 that constantly biases the hinge pin 8 is mounted. The hole 9 is formed by connecting a first hole 12 that is a vertical hole on the upper side and a second hole 13 that has a substantially semicircular shape on the lower side. The hinge pin 8 has a vertically long flat plate shape only in the portion 8a through which the hole 9 is inserted. The second hole 13 has an abutting portion 13a on the upper side, with which the flat plate-shaped portion 8a abuts when the arm rest 4 is in the use position. A cylindrical spring bracket 14 is provided at the tip 8b of the hinge pin 8 so as to be rotatable with respect to the hinge pin 8.

As shown in FIG. 3, a notch 15 is provided at the tip 8 b of the hinge pin 8, and an annular ring 16 having a larger diameter than the spring bracket 14 is provided so as to prevent the spring bracket 14 from falling off from the hinge pin 8. It is fitted in the part 15. Further, the spring bracket 14 is provided with a mounting portion 17 for mounting the spring 10.

Next, the operation of this configuration will be described. As shown in FIG. 4, a state A in which the armrest 4 is in the storage position (one-dot chain line in the figure), a state B in which the armrest 4 is pushed down (two-dot chain line in the figure), and a state C in which the armrest 4 is in the use position (in the figure) The three states (solid line) will be described. Note that, in FIGS. 5, 6, and 7, the seat back 3 is shown only by the dashed-dotted line, and the spring 10 and the like are omitted.

FIG. 5 is a state diagram of the hinge pin 8 with the armrest 4 in the storage position. Since the hinge pin 8 is constantly urged upward by the spring 10, it is located in the first hole 12, and even if the armrest 4 tries to rotate forward in the event of a collision, the flat plate-shaped portion 8a does not move. Since the rotation of the armrest 4 is restricted inside, the housed state of the armrest 4 is firmly maintained.

FIG. 6 is a state diagram of the hinge pin 8 when the armrest 4 itself is pushed down. When a hand is inserted between the recess 5 for accommodating the armrest 4 and the upper end 4a of the armrest 4 in the accommodating position and the armrest 4 itself is pushed downward, the hinge pin 8 causes the spring 10 to move. By moving from the first hole 12 to the second hole 13 against the force, the armrest 4 becomes rotatable.

FIG. 7 is a state diagram of the hinge pin 8 with the armrest 4 in the use position. With the armrest 4 itself held down, rotate the seatback 3 forward to bring the armrest 4 to the use position. Since the hinge pin 8 is biased upward by the spring 10, the hinge pin 8 is pressed against the contact portion 13a of the second hole 13, and the armrest 4 is held in the use position.

As described above, in the embodiment of the present invention, the armrest 4 and the seat back 3 can be locked by the operation of the armrest itself, so that the structure is simplified. Further, since the hinge pin and the hole provided in the hinge bracket are locked by the pressure contact relationship, the rigidity is high. Further, by inserting a hand between the recess 5 for accommodating the armrest 4 and the upper end 4a of the armrest 4 in the storage position, the armrest 4 itself is pushed downward, and the armrest 4 itself is kept depressed. In this state, the armrest 4 can be moved to the use position by a series of operations of rotating the seatback 3 forward, so that the operability is also good. Moreover, the armrest 4 in the storage position does not jump forward even in the event of a collision. In the embodiment, only the insertion portion 8a of the hinge pin 8 has a vertically long flat plate shape, but the entire hinge pin 8 may have a vertically long flat plate shape.

Although the hinge bracket 6 is also fixed to the frame (not shown) of the seat back 3, it can be fixed at any place where it can be fixed on either the vehicle body side (not shown) or the seat cushion 2 side. It can be in place.

Further, although the hinge pin 8 is pulled by the spring 10 from the upper side, it may be pushed up by the elastic member such as a spring from the lower side.

In the hole 9, the first hole 12 is a vertical hole and the second hole 13 is a substantially semi-circular shape. In the first hole, the hinge pin 8 cannot be rotated, and in the second hole, Any shape may be used as long as the hinge pin 8 is rotatable and has an abutting portion with which the hinge pin 8 abuts.

[Brief description of drawings]

FIG. 1 is a perspective view of a rear seat according to the present invention.

FIG. 2 is a perspective view of a main part according to the present invention.

FIG. 3 is a view taken along line XX in FIG.

FIG. 4 is a state diagram showing each state of the armrest.

FIG. 5 is a state diagram of a hinge pin at a storage position of an armrest.

FIG. 6 is a state diagram of a hinge pin when an armrest is pushed down.

FIG. 7 is a state diagram of the hinge pin in the use position of the armrest.

FIG. 8 is a perspective view of a reclining seat according to a conventional example.

FIG. 9 is a configuration diagram of a main part according to a conventional example.

[Explanation of symbols]

 3 ... Seat back 4 ... Armrest 6 ... Hinge bracket 8 ... Hinge pin 9 ... Hole 10 ... Spring 12 ... First hole 13 ... Second hole 13a ... Abutment portion 14 ... Spring bracket

Claims (1)

[Scope of utility model registration request] 1. An armrest structure for a vehicle seat, comprising: a seat cushion, a seatback, an armrest, and a hinge shaft fixed to the armrest to allow the armrest to rotate with respect to the seatback. In the first aspect, a bracket having a hole through which the hinge shaft is inserted is provided, and a portion of the hinge shaft through which the hinge shaft is inserted has a vertically long flat plate shape, and the hole is an upper vertical hole.
The hole and a second hole that is wider than the first hole below are connected to each other, and the second hole has an abutting portion on the upper side, with which the hinge shaft abuts. The armrest of the vehicle seat is characterized in that it is unrotatable in one hole and rotatable in the second hole, and that the hinge shaft is always urged upward by an elastic member. Construction.