JPH0910071A - Chair armrest device - Google Patents

Abstract

(57) [Summary] [Purpose] A cover plate can be easily attached to an armrest, and female thread processing for attaching the cover plate to the armrest is not required, regardless of whether the chair has a cover plate or not. The armrests can be shared, and the cost will not increase and the appearance will be good. [Structure] Protrusions 20 are provided on the inner surface of the armrest 18,
The cover plate 34 has two side plates 44 and 46, which are joined to each other on both the left and right side surfaces thereof at intervals in the left-right direction. As fitted, the cover plate 34 fits within the armrest 18. The armrest 18 and the cover plate 34 are connected by a connecting means that prevents separation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chair armrest device. In particular, it relates to an armrest device having a cover plate for armrests.

[0002]

2. Description of the Related Art In chairs with armrests, it is known to attach a cover plate for armrests in order to give a more luxurious appearance. Most of the recent armrests are made of aluminum engaging metal, synthetic resin material, etc., in the shape of a frame with an open inside, or in a shape like cutting a part of the frame, in other words, bending a rod-like thing. There is.

When attaching a cover plate to these armrests, two side plates are separately provided to cover both side surfaces of the armrest, and the inner side of one of the side plates is fixed to the armrest with a screw or the like, and then the side plate is no longer attached. One of the side plates is attached with adhesive or tape, or with a locking means for locking a part of the shaft with respect to the hole.

[0004]

Therefore, in the above-mentioned conventional structure, it takes time to attach the cover plate. Further, in order to attach the cover plate, it is necessary to process female screws or the like on the armrest. This is similar in design to the shape of the armrests, but if you want to manufacture two types of chairs with and without a cover plate, you can use a chair with or without a cover plate It will be necessary to use different ones with and without.

When an armrest is to be commonly used regardless of whether or not there is a cover plate, an armrest having a female screw or the like will be used for a chair that does not use a cover plate.
The cost is increased by processing the internal thread, and the unnecessary internal thread and the like are visible, resulting in poor appearance.

An object of the present invention is to make it possible to easily attach a cover plate, do not require female thread processing for attaching the cover plate to the armrest, and commonly use the armrest regardless of whether the chair has a cover plate or not. The present invention aims to provide a chair armrest device that can be manufactured at a high cost without increasing the cost.

[0007]

The present invention employs the following means in order to achieve the above object. (1) The armrest is rod-shaped, has a horizontal portion and a front portion bent downward on the front side of the horizontal portion, and is formed in a substantially inverted L shape when viewed from the side. In the armrest device, a cover plate that covers the opening inside the armrest is provided, and a ridge is provided on the inner surface of the armrest.
It has a pair of left and right side plates connected to each other with a space in the left-right direction, and the protrusions are fitted in the gap between the both side plates formed at the upper edge and the front edge of the cover plate. There is provided a coupling means for fitting the cover plate inside the armrest and for coupling the fitted armrest and the cover plate so as not to separate them.

(2) In the preceding paragraph, the horizontal portion of the armrest, the front portion, and the ridge portion are integrally formed, and the ridge portion is provided over the entire length of the armrest so as to be continuous on the center line of the inner surface with the same width. . (3) In the above item 1 or 2, the two side plates are joined by fixing the end plates from the rear edge to the lower edge of both side plates of the cover plate.

[0009]

The armrest is rod-shaped, has a horizontal portion and a front portion, and is formed in a substantially inverted L-shape when viewed from the side, and a ridge portion is provided on the inner surface of the armrest. On the other hand, the cover plate that closes the opening inside the armrest joins the two side plates on the left and right side surfaces thereof with a gap. For this reason, the gap generated between the two side plates can be fitted to the protrusion of the armrest at the upper edge and the front edge of the cover plate. This fitting operation is simple because the cover plate is simply pushed in from below and behind the armrest.

Further, since the connecting means for connecting the fitted armrest and the cover plate is provided so as not to be separated from each other, the cover plate is fixed to the armrest securely and firmly without rattling in the lateral direction. . By devising this coupling means, it is possible to perform the female screw processing for fixing the cover plate without performing it on the armrest. Also, the cover plate can be easily attached and detached (Claim 1).

If the armrest is integrally formed including the ridge and the ridge is provided over the entire length of the armrest, the armrest can be easily processed and the armrest and the cover plate are firmly fixed to each other. (Claim 2).

From the rear edge to the lower edge of the cover plate, it is irrelevant to the fitting with the ridge portion of the armrest, so if two side plates having a space are joined using the end face plate, the two side plates are joined. As the strength increases, the gap between the two side plates from the rear edge to the lower edge is filled up with a good appearance, and the appearance is improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view showing the entire structure of a chair to which an embodiment of the armrest device of the present invention is attached. The main parts will be explained with reference to FIG. 1. (2) is a leg part, and there are five legs (4) and five casters at the tip thereof.
(6) and the pedestal (8) which stands in the center.

A box-shaped base frame (10) is held on the upper part of the pedestal (8), and a seat body (2) is attached to the upper surface of the base frame (10).
It is fixed via individual plates (14). The base frame (10) has some adjusting / fixing mechanisms and their operating handles, but their explanations are omitted. In addition, the seat body (1
2) has a seat (15) and a backrest (16).

This chair has an armrest device. Although (18) is an armrest and is attached to the left and right sides of the seat body (12), one of them is omitted in FIG. Further, this chair can be used with or without a cover plate, and the cover plate may be omitted when unnecessary.

The armrest (18) is a rod-shaped member having a rectangular cross section and a ridge (20) in the center of the inside, and is a horizontal part on which the arm rests.
(22) and a front part (24) which folds downward at the front side of the horizontal part (22) and hangs downward and rearward, and when viewed from the side as a whole, it has a substantially inverted L-shape. It is also seen as a shape like a part of a frame.

The armrests (18) are attached to the both ends thereof, that is, the rear ends of the horizontal parts (22) and the lower ends of the front parts (24), by mounting parts (26) (28).
Mounting holes for screws (30) (3
0) is drilled. On the other hand, on the side surface of the seat body (12), two female screws (32), one corresponding to the position of the mounting holes (30) (30) of the armrest (18), one on the backrest (16) side. One on the seat (15) side,
The armrest (18) is provided and is fixed by screwing the mounting portions (26) and (28) to the side surface of the seat body (12).

The protruding portion (20) of the armrest (18) is the same on the center line of the inner surface over the entire length of the armrest (18) between the mounting portions (26) and (28) protruding inside the both ends. It is provided so as to be continuous in width. As a chair armrest device, there is only a bar-shaped armrest, but in the chair of this embodiment,
Rod-like armrests (18) and seats (12) for a more luxurious look
A cover plate (34) for closing the opening formed inside can be attached.

The cover plate (34) will be described in detail with reference to FIGS. The shape of the cover plate (34) when viewed from the side is
It has an approximately rhombus shape, and the upper edge (36) to the front edge (38) are armrests.
Shaped to fit snugly on the inside of (18), with a trailing edge (40)
The shape from the lower edge to the lower edge (42) overlaps the side surface of the seat body (12) and has a rounded corner. Further, the upper back corner and the lower front corner of the cover plate (34) are recessed according to the inner shape of the mounting portions (26) (28) protruding inside the both ends of the armrest (18), and the recessed portion (56) ( I am making 58).

The structure of the cover plate (34) is as follows.
Two side plates made of plywood using wood, that is, side plates on the side of the seat
(44) and the outer side plate (46) are curved from the trailing edge (40) to the lower edge (42) according to the outer shape of the cover plate (34), and the wooden end face plate with rounded outer corners ( According to 48), on the front side, a wooden rectangular connecting member (50) is used to join the hollow inside with a predetermined gap.

Further, a band plate-shaped mounting member (52) is placed on the outer surface of the side plate (44) on the seat body side, and is diagonally stretched from the upper rear corner to the lower front corner of the cover plate (34) to form a wood screw. It is fixed at (54). The mounting bracket (52) has steps at both ends with respect to the intermediate fixing portion (64) that is overlaid on the outer surface of the side plate (44), and the mounting portion (62)
(62), which is projected from the outer periphery of the cover plate (34) into the recesses (56) (58), and the mounting holes (60) formed in the mounting portions (62) (62) of the mounting bracket (52). (60) is aligned with the mounting holes (30) and (30) of the armrest (18).

Also, the side plate (4
When the surface of (4) is recessed from the other surface by the thickness of the mounting bracket (52) and the mounting bracket (52) is overlapped, the upper surface of the fixing portion (64) of the mounting bracket (52) is attached to the side plate ( It is almost flush with the surface other than the fixed surface of 44).

Cushion materials (66), (68) and (70) such as foam synthetic resin are put on a wooden frame including the fixing portion (64) of the mounting bracket (52) as described above, and further thereon. , Synthetic resin, skin material such as leather is covered and sewn together. In this case, the surface of the skin material (72) stretched on the side plate (44) and the surfaces of the mounting portions (62) and (62) of the mounting bracket (52) are substantially flush with each other.

The distance between the two side plates (44) and (46) of the cover plate (34) is set so that the skin material (7
2) Including the thickness of (74), the protrusion of the armrest (18) in the gap.
(20) is the size to fit.

Now, the cover plate (34) having such a structure is used as an armrest.
The method of fixing to (18) is as follows. First, cover plate (34)
The lower part of the armrest (18) from below and cover the cover plate (34)
The gap between the edges of the side plates (44) (46) and the continuous ridges (20) on the inner surface of the armrest (18) are fitted together.

Since the cover plate (34) and the armrest (18) are fitted tightly, and the mounting metal fitting (52) of the cover plate (34) is fixed by being superposed on the outer surface of the side plate (44) on the seat body side. The mounting portions (62) (62) overlap the seat portions of the mounting portions (26) (28) at both ends of the armrest (18), and the mounting holes (60) (60) of the mounting bracket (52) and the armrest (18 ) Mounting hole (3
0) and (30) are exactly the same. In this state, armrest (18)
And the cover plate (34) on the side surface of the seat body (12) with the two female screws.
Tighten together with (30) with screws to fix. An embodiment of the present invention will be described with reference to FIGS.

The armrest (18) and the cover plate (34) are seated (12).
The structure to fasten and fix it to the side of the armrest (18) and cover plate (3
Speaking only about 4), the mating armrest (18) and cover plate
(34) is a coupling means for preventing separation from.

The effects of this embodiment are as follows. First
In addition, the bar-shaped armrest (18) is provided with a protrusion (20) on its inner side surface, while the cover plate (34) joins the left and right side plates (44) (46) with a space therebetween. Using the groove-shaped gap formed by the edge, the structure is such that it fits into the ridge (20) of the armrest, and the armrest (18) and the cover plate (34) are seated ( 12)
The following effects are brought about by the structure in which it is fastened together with the side surface of the by fixing with screws.

The attachment / detachment of the cover plate (34) is extremely easy. The cover plate (34) is securely and firmly fixed to the armrest (18) without rattling in the lateral direction. Since it is not necessary to process female threads on the armrest (18) for fixing the cover plate (34), use the armrest (18) in common for both chairs with and without the cover plate (34). You can The cost does not increase even for a chair to which the cover plate (34) is not attached, and it is possible to prevent the appearance from being undesired due to the appearance of unnecessary female screws and the like.

Secondly, when the armrest (18) is integrally formed including the ridge (20) and the ridge (20) is provided over the entire length of the armrest (18), the armrest (18) is processed. Easier and also
Fixing by fitting the armrest (18) and the cover plate (34) can be made strong without rattling in the lateral direction.

Third, the rear edge (40) to the lower edge (42) of the cover plate (34)
By the end face plate (48) that joins the two side plates (44) (46) having a space to each other, the two side plates (44) (46) are strongly coupled and the rear edge (40) to the lower edge. The gap between the two side plates up to (42) can be filled so that it does not stick,
It can also be rounded to make it look good.

[0032]

Since the present invention is constructed as described above,
It produces the following effects. First, the armrest is formed in a rod shape and has a substantially inverted L shape when viewed from the side, and a ridge is provided on the inner surface of the armrest, while the cover plate has two pieces on both left and right side surfaces thereof. Since the side plates are joined with a space therebetween and the gap generated between the two side plates is used, the gap is fitted to the ridge portion of the armrest at the upper edge and the front edge of the cover plate, This fitting work is simple because it only pushes the cover plate from below and behind the armrest.

In addition to the above structure, the armrest and the cover plate to be fitted are not separated, unlike the structure in which the armrest and the cover plate in the above embodiment are fixed to the side surface of the seat body by screws together. If the connecting means for connecting in this way is provided, the attachment / detachment of the cover plate becomes extremely easy. The cover plate for the armrest has no lateral rattling,
Securely and firmly fixed. Since it is not necessary to process an internal thread on the armrest for fixing the cover plate, the armrest can be commonly used for both chairs with and without the cover plate. Even for a chair without a cover plate, the cost is not increased, and it is possible to prevent the appearance from being unsatisfactory due to the appearance of unnecessary female screws (all claims).

Secondly, if the armrest is integrally formed including the ridge and the ridge is provided over the entire length of the armrest, the armrest can be easily processed and fixed by fitting the armrest and the cover plate. Can be made strong (claim 2). Thirdly, by joining the two side plates by using the end face plate, the coupling between the two side plates can be strengthened, and at the same time, the space between the both side plates can be closed to give a good appearance. Yes (Claim 3).

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a chair with an armrest provided with an embodiment of the present invention.

FIG. 2 is a side view of the cover plate as viewed from the outside.

3 is a cross-sectional view of the cover plate of FIG. 2 taken along the line AA.

FIG. 4 is a front view of a cover plate.

5 is a partial cross-sectional view taken along line BB of FIG.

[Explanation of symbols]

 (12) Seat (18) Armrest (20) Ridge (30) Mounting hole (34) Cover plate (44) (46) Side plate (52) Mounting bracket (60) Mounting hole (72) (74) (76) ) Skin material

Claims (3)

[Claims] 1. An armrest is rod-shaped, has a horizontal portion and a front portion bent downward on the front side of the horizontal portion, and is formed in a substantially inverted L shape when viewed from the side, and is fixed to a seat body. In the armrest device of the chair, while providing a cover plate that closes the opening inside the armrest,
Protrusions are provided on the inner surface of the armrest, and the cover plate has a pair of left and right side plates that are connected to each other with a space in the left-right direction, and the both sides formed at the upper edge and the front edge of the cover plate. A coupling means was provided for fitting the cover plate inside the armrest so that the protruding portion fits in the gap between the plates, and for coupling the fitted armrest and the cover plate so as not to separate them. An armrest device for a chair, which is characterized in that 2. A horizontal portion of the armrest, a front portion and a ridge portion are integrally formed, and the ridge portion is continuously provided on the center line of the inner surface of the armrest with the same width over the entire length of the armrest. The armrest device for a chair according to claim 1, wherein the armrest device is a chair. 3. The armrest device for a chair according to claim 1, wherein two side plates are joined by fixing end plates from the rear edge to the lower edge of both side plates of the cover plate.