JP2778452B2 - Armrest assembly structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicular seat having an armrest suitable for use as, for example, a bench-type or semi-separable-type vehicle rear back seat.
More specifically, the present invention relates to an armrest assembling structure for assembling the armrest so that it can be stored and pulled out in a seat.

[0002]

2. Description of the Related Art An armrest is generally provided as an armrest on a seat provided in a vehicle interior of various vehicles and the like. For example, in a bench seat such as a rear back seat, a recess is formed in a central portion on the front side of the seat back, and a lower end portion is pivotally supported in the recess,
An armrest that is always housed substantially in the same plane as the seat back surface, and is tilted forward in front of the seat when necessary, turned to a substantially horizontal state according to the occupant's preference, etc., and pulled out and used as an armrest Is provided so that it can be stored and pulled out.

That is, as shown in FIGS. 9 and 10, this type of armrest 1 stands upright on the rear end side of a seat cushion 3 in a vehicle seat 2 such as a bench-type rear back seat. The seat back 4 is rotatably supported in a recessed portion 5 provided in a central portion or the like of the seat back 4 so as to be stored or pulled out.

Further, in FIG. 9, reference numerals 6 and 6 denote fixed-side frames which are provided integrally with a seat back frame (not shown) or a part thereof and are exposed in the recess 5. As is clear from FIG. 10, hinge brackets 7, 7 for rotatably supporting the armrest 1 are provided on a part of the arm brackets 1 and 6, which are fixed by screws 9 or the like. . Reference numeral 8 in FIG. 10 denotes a pivot pin provided on the rear end side of the armrest 1 and pivotally supported at the tip of the hinge bracket 10.

[0005]

In the conventional structure as described above, hinge brackets 7, 7 for pivotally supporting the armrest 1 in the recess 5 on the side of the seat back 4 are provided.
Are screwed to the fixed frames 6, 6, and the number of components is large, and the work at the time of assembling is troublesome and complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and aims to reduce the number of parts by allowing a retractable armrest to be easily incorporated into a seatback without screws. It is another object of the present invention to obtain an inexpensive armrest assembling structure capable of improving the workability of armrest assembling.

[0007]

In order to meet such a demand, an armrest assembling structure according to the present invention is provided with a hinge bracket serving as a hinge portion of an armrest provided in a recess of a seat back so as to be capable of being pulled out and rotated. Is fixed to a fixed side frame provided facing the recess of the seat back, and a hinge pin rotatably supported at the tip end of the hinge bracket is provided so as to protrude from the armrest side, and A slit groove is formed in the hinge bracket at an angle of inclination greater than the angle of use of the armrest. The guide groove is inserted into the hinge groove in a state where the hinge pin does not rotate. And a shaft support portion whose portion is rotatably supported.

In the armrest assembling structure according to the present invention, as a hinge pin, an outer end is formed as a large-diameter head, and a portion protruding from an armrest side portion is provided.
The cross section is formed so as to have a non-circular shape.

Further, in the armrest assembling structure according to the present invention, an obliquely upper portion of the slit groove in the hinge bracket is bent outwardly, and the bent portion has
An opening for inserting the head of the hinge pin protruding from the armrest side is formed continuously with the slit groove, and the slit groove in the hinge bracket main body is connected to the hinge pin head. The guide portion has a groove width such that the guide portion engages with the non-circular portion of the hinge pin and guides the portion without rotating the guide portion. It is formed in a circular shape having the maximum diameter of the non-circular portion.

[0010]

According to the present invention, a hinge pin is fixedly provided on the rear end side of the armrest, and the hinge bracket is welded and fixed to the fixed side frame in the seat back recess. The armrest is mounted on the seatback while the non-circular portion of the hinge pin is inserted into the diagonally upwardly extending slit groove formed on the seatback, and the armrest is rotatably supported at the shaft support portion of the slit groove. Can be stored and pulled out.

[0011]

1 to 8 show one embodiment of an armrest assembling structure according to the present invention. In these drawings, the same or corresponding parts as those in FIGS. 9 and 10 described above have the same reference numerals. And the description is omitted.

Now, according to the present invention, FIGS.
As is clear from the drawings, the hinge brackets 10, 10 serving as hinge portions of the armrest 1, which can be stored and pulled out and rotated in the recess 5 of the seat back 4, are provided facing the recess 5 of the seat back 4. The hinge brackets 10 and 10 are provided by being fixed to the fixed side frames 6 and 6 in advance by welding.
Pin 2 rotatably supported at the tip of the hinge 2
0, 20 protruding from the side of the armrest 1, and the hinge brackets 10, 10 are provided with armrests 1, 2.
A slit groove 11 that is inclined with an angle β greater than the rotation use angle α of the guide pin 12 and the guide part 12 that is inserted in a state where the shaft part 21 of the hinge pin 20 does not rotate. It is characterized in that the shaft portion 21 is configured to have a rotatably supported shaft support portion 13.

Here, according to the present invention, the hinge pin 2
0, as shown in FIG.
2, and a portion of the shaft portion 21 protruding toward the side of the armrest 1 is formed so as to have a non-circular cross section such as a flat plate portion 22 or the like.

Further, the obliquely upper portion of the slit groove 11 in the hinge bracket 10 described above is formed to be bent outward as is apparent from FIGS. 1 and 2, and the bent portion 14 is connected to the fixed side frame. 6 is fixed by welding.

The head 22 of the hinge pin 20 projecting from the armrest 1 side is provided on the bent portion 14.
An opening 15 through which a hole is inserted is formed continuously with the slit groove 11. Further, the hinge bracket 10
The slit groove 11 of the main body has a width dimension (L) smaller than that of the head 22 of the hinge pin 20, and the guide 12 is engaged with the non-circular shaft 21 of the hinge pin 20. Groove width L that guides the part without rotation
And the shaft support portion 13 is formed with the non-circular shaft portion 21.
And a circular shape having the maximum diameter dimension φ.
The groove width L of the guide portion 12 is formed to be slightly larger than the thickness 1 of the shaft portion 21.

In FIG. 4, reference numeral 25 denotes an inner frame of the armrest in the armrest 1, and reference numeral 26 denotes a fitting fitted to the flat shaft portion 21 of the hinge pin 20 to rotate the slit groove 11 at the shaft support portion 13. A resin washer 27 for smooth operation is a bracket for fixing the distal end 23 of the hinge pin 20 fitted with the resin washer 26 in the armrest 1.

According to the above-described structure, the hinge pin 20 is fixedly provided on the rear end side of the armrest 1 and the hinge bracket 10 is welded to the fixed frame 6 in the seat back recess 5. A slit groove 1 which is fixed and formed on the hinge bracket 10 and extends obliquely upward.
The armrest 1 is mounted on the seat back 4 while guiding the non-circular shaft portion 21 of the hinge pin 20 through the hinge pin 20, and is rotatable via the resin washer 26 at the shaft support portion 13 of the slit groove 11. , The armrest 1 can be stored and pulled out.

Here, the hinge pins 20 of the armrest 1 are attached to the hinge bracket 10 by sequentially inserting the hinge pins 20 in the direction of the arrow indicated by Z in FIGS. It is easy to see what you can do. In this case, as apparent from FIG. 7A, the resin washer 26 fitted to the shaft portion 21 of the pin 20 passes through the guide portion 12 while being crushed, while the resin washer 26 passes through the shaft support portion 13 as shown in FIG. As shown in (b), it becomes a substantially circular shape, and it is possible to provide a freely rotatable shaft supporting state.

At the time of such assembling, the head 22 of the pin 20 can be easily inserted by passing through the opening 15 formed in the bent portion 14 of the hinge bracket 10.

Of course, such assembling of the armrest 1 is performed before the mounting of the back board (not shown) of the seat back 4, and after the assembling, the assembling of the seat back 4 side such as mounting the back board. It goes without saying that this is done.

According to such a structure, storage,
The armrest 1 that can be pulled out can be easily assembled into the seatback 4 without screws, reducing the number of parts, and providing an inexpensive armrest 1 mounting structure that can improve the workability of mounting the armrest 1. be able to.

Further, as described above, the direction of mounting the armrest 1 is shifted from the normal use angle range by the angle β, so that the armrest 1 is mounted after the mounting.
The problem of getting out does not arise.

It should be noted that the present invention is not limited to the structure of the embodiment described above, and the shape, structure and the like of each part of the armrest 1 and the seat 2 can be freely modified and changed as needed. Can be considered. For example, pin 2 for hinge
The shape of the 0-axis portion 21 is not limited to the flat plate-like portion as in the embodiment, and any suitable modification may be considered as long as the cross-section has a non-circular shape. When the resin washer 26 is used, a reliable bearing state can be obtained, but it is not always necessary.

Further, it will be apparent that the present invention may be applied to other than the vehicle seat (bench type rear back seat 2) in the above-described embodiment.

[0025]

As described above, according to the armrest assembling structure of the present invention, the hinge bracket serving as the hinge part of the armrest that can be stored and pulled out and rotated in the recess of the seatback is provided in the recess of the seatback. And a hinge pin rotatably supported at the distal end of the hinge bracket is provided to protrude from the armrest side, and the hinge bracket is provided with an armrest. A slit groove that is inclined with an inclination angle larger than the rotation use angle of the hinge pin is formed, and the guide portion and the shaft portion which are inserted in a state where the shaft portion of the hinge pin does not rotate are rotatable. The structure has a shaft supporting part, so despite the simple structure with the minimum required number of parts, The armrest can be assembled to the seat back and can be rotatably supported at the shaft support of the slit groove. The armrest can be easily assembled so that it can be stored and pulled out, greatly improving workability. Can be improved.

In particular, according to the present invention, as the hinge pin, the outer end is formed as a large-diameter head, and the portion projecting toward the armrest side is formed so as to have a non-circular cross section. Although it is a simple structure, it can easily and properly insert the hinge bracket into the slit groove and support the shaft even though it has a simple structure, it does not cause erroneous assembly etc. I have.

Further, according to the present invention, the diagonally upper portion of the slit groove in the hinge bracket is bent outward, and the bent portion has a hinge pin head projecting from the armrest side. An opening through which the slit is formed is formed continuously with the slit groove, and the slit groove in the hinge bracket body has a width smaller than the head of the hinge pin, and the guide is , Formed with a groove width that engages with the non-circular portion of the hinge pin and guides the portion without rotating, and forms the shaft support portion with a circular shape having the maximum diameter dimension of the non-circular portion. As a result, the above-mentioned operation and effect, that is, the armrest that can be retracted and pulled out can be easily incorporated into the seat back without screws, reducing the number of parts, and further improving the armrest assembly workability. Inexpensive armrest assembly structure can improve can be obtained.

[Brief description of the drawings]

FIG. 1 is an exploded schematic perspective view of an essential part showing an embodiment of an armrest assembling structure according to the present invention.

FIG. 2 is a schematic perspective view of a hinge bracket in the armrest mounting structure of the present invention.

FIG. 3 is a schematic perspective view of a hinge pin in the armrest assembly structure of the present invention.

FIG. 4 is a schematic exploded perspective view of a hinge pin assembly portion of the armrest according to the present invention.

FIG. 5 is a schematic perspective view of an armrest according to the present invention.

FIG. 6 is a detailed view of an armrest shaft support according to the present invention.

FIGS. 7A and 7B are schematic diagrams for explaining the insertion state of the slit groove of the hinge pin through the guide portion and the shaft support portion according to the present invention; FIGS.

FIG. 8 is a schematic side view of a sheet to which the present invention is applied.

FIG. 9 is a schematic diagram showing an assembled state of an armrest to a seat back.

FIG. 10 is a schematic diagram illustrating a conventional armrest assembling structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Armrest 2 Seat 4 Seatback 5 Concave part 6 Fixed side frame 10 Hinge bracket 11 Slit groove 12 Guide part 13 Shaft support part 14 Bend part 15 Opening 20 Hinge pin 21 Shaft part 22 Head 23 Tip part 25 Armrest inner frame 26 Resin washer 27 Bracket

Claims (3)

(57) [Claims] 1. An armrest provided in a recess of a seat back so as to be rotatable and retractable by a hinge portion, and a hinged portion of the armrest is provided on a fixed side frame provided facing the recess of the seat back. And a hinge pin rotatably supported at the distal end of the hinge bracket is provided so as to protrude from the side of the armrest. A slit groove that is inclined with an inclination angle greater than the dynamic use angle is formed, and the slit groove is formed by a guide portion that is inserted in a state where the shaft portion of the hinge pin does not rotate and the shaft portion is rotatably mounted. An armrest assembling structure, comprising: a shaft supporting portion to be supported. 2. The armrest assembling structure according to claim 1, wherein the hinge pin has an outer end formed as a large-diameter head, and a section protruding from the armrest side has a non-circular cross section. An armrest assembling structure characterized by being formed to exhibit. 3. The armrest assembling structure according to claim 1, wherein the hinge bracket is formed such that an obliquely upper portion of the slit groove is bent outward, and the bent portion is provided on the armrest side. An opening for inserting the head of the hinge pin projecting from the opening is formed continuously with the slit groove, and the slit groove in the main body of the hinge bracket is formed by the hinge pin head. The guide portion is formed with a groove width that engages with the non-circular portion of the hinge pin and guides the portion without rotating, and the shaft support portion is An armrest assembling structure characterized by being formed in a circular shape having a maximum diameter dimension of a circular portion.