JP2000279263A - Structure for attaching armrest to chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a structure for attaching armrests and enhance the attached strength of the armrests. SOLUTION: A support member 5 is positioned on the lower face portion of a seat plate. An inward projection 9 is provided at the lower end of the column portion 6 of an armrest 4 made from a synthetic resin, and a fitting hole 10 which is fit for the support member 5 is provided integrally with the inward projection 9. A screw 13 with a knob 15 is non-droppingly attached to the inward projection 9 of the armrest 4 and is driven into an internally threaded hole 14 in the support member 5. Since the inward projection 9 of the armrest 4 is fitted to the support member 5, fastening strength can be enhanced regardless of a simple structure such that the armrest is fixed in place by means of one screw 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting an armrest on a chair.

[0002]

2. Description of the Related Art An armrest of a chair is generally provided with a horizontal portion at the upper end of a column extending vertically when viewed from the front. The lower end is attached to a left and right support member arranged along the lower surface of the seat plate (the support member is fixed to the lower surface of the seat plate, or is fixed to a support frame to which the seat plate is attached. are doing).

As an example, Japanese Patent Publication No. 7-89973 discloses that a supporting member (named as a mounting portion in the publication) is formed in a hollow shape, and at the lower end of a column in an armrest, the inside of the supporting member is provided. It is described that a substantially horizontal connection member fitted in from the lateral direction is fixed with screws, and the connection member and the support member are provided with positioning means and retaining means.

In addition, Japanese Utility Model Registration No. 2500932 discloses that a horizontal portion extending along the lower surface of a support member is integrally provided at a lower end of a support portion of an armrest, and this horizontal portion is provided with:
A pin and a fastener such as a screw penetrating vertically are provided in the horizontal portion, and a head provided at an upper end of the pin is fitted into a positioning hole formed at an end of the support member. It is described that screwing or the like is performed.

[0005] Further, in Japanese Utility Model Registration No. 2503184, a horizontal portion is integrally provided at the lower end of a pillar portion in an elbow rest, similarly to the above-mentioned Utility Model Registration No. 2500932.
On the upper surface of the horizontal portion, a first insertion portion protruding inward and a second insertion portion protruding outward are provided, while a first member into which the first insertion portion fits is fitted to the support member. Insertion hole and second
And a second insertion hole into which the insertion portion is fitted. The first insertion portion is fitted into the first insertion hole in a state where the elbow pad is inclined in a front view, and the elbow pad is raised to a normal posture. It describes that the second insertion portion is fitted into the second insertion hole by pulling outward, and the attached state is maintained by the action of the locking claw.

[0006]

[Problems to be solved by the invention] Japanese Patent Publication No. 7-89973
The structure of the publication is considered to be excellent in strength because the support part of the armrest is inserted into the support member, but it is necessary to attach another member to the support part of the armrest and the positioning Due to the fact that the support member and the armrest have to be subjected to a lot of processing for the means and the retaining means, there is a problem that the mounting structure is significantly complicated.
On the other hand, Utility Model Registration No. 2500932 and 250
In the case of Japanese Patent Publication No. 3184, the structure is simpler than that of Japanese Patent Publication No. 7-89973, but these are in a state where the horizontal part of the column in the elbow rest is suspended on the lower surface of the support member. Therefore, there was a problem in strength.

An object of the present invention is to solve these problems.

[0008]

According to the present invention, a support member extending in the left-right direction in a plan view is provided at a portion along a lower surface of a seat plate, and the lower end of a support portion of an armrest is attached to the support member. In the chair, the fitting portion for holding the elbow pad so that it cannot fall down and cannot be moved forward and backward by integrally fitting the support member from the left and right outer sides is provided at the lower end of the pillar portion of the elbow pad. The present invention is characterized in that the lower end of the column is fixed to the support member by a fastener such as a screw so that it cannot be pulled out right and left outward.

[0009]

According to the present invention, according to the present invention, the elbow rest is held in such a manner that it can not fall down and cannot be shifted forward and backward by merely fitting the lower end of the column in the elbow rest directly to the support member. Can be attached to the support member by a simple operation of operating the fastener after fitting the support portion to the support member.

[0010] In the present invention, since the fitting portion is provided integrally with the pillar portion of the elbow pad, another member other than the fastener is not required, and the number of members can be reduced accordingly. This, combined with the fact that no special processing for the positioning of the elbow rests needs to be performed on the support member, significantly simplifies the overall structure. In addition, since the pillar portion of the elbow rest is fitted to the support member and held so as not to fall down, sufficient fixing strength can be secured.

[0011]

Next, embodiments of the present invention will be described with reference to the drawings.

First Embodiment FIGS. 1 to 4 show a first embodiment. FIG. 1 is a front view of a chair, FIG. 2 is a right side view of the chair, and FIG. FIG. 4 (A) is a view showing an assembly process, and FIG. 4 (B) is a sectional view of a main part.

The chair comprises a seating member (handing) 2 fixed to the upper end of a pillar 1, and a seat plate 3 supported by the seating member 2.
And a pair of left and right elbow rests 4 arranged on the left and right sides of the seat plate 3
And a support member 5 made of a metal plate disposed on the lower surface of the lower surface of the seat plate 3 for mounting the armrest 4. The support member 5 is fixed to the seat receiver 2, but may be fixed to the lower surface of the seat plate 3. Although only one support member 5 extends left and right, it may be configured separately for left and right.

The armrest 4 includes a column 6 extending vertically in a front view of the chair (which is inclined rearwardly in a side view),
A horizontal portion 7 is provided at the upper end. Elbow rest 4
Is integrally formed of a synthetic resin,
And the horizontal portion 7 may be configured separately.) In addition, as shown by a dashed line in FIG. 1, a cover 8 that covers a lower portion of the seat plate 3 may be provided.

As shown in FIG. 3, the support member 5 is formed in the shape of a gutter having an upward opening in cross section.
It is located almost the same as the left and right ends of. On the other hand, elbow rest 4
A horizontal inward protrusion 9 is integrally provided at the lower end of the support portion 6 in FIG. Are integrally formed. When the fitting hole 10 is fitted in the support portion 6, the elbow pad 4 is held so as not to fall down and to be displaced forward and backward. In the present embodiment, the upper surface of the inwardly protruding portion 9 near the tip is partially notched (the notch is indicated by reference numeral 11).
May be formed in a state where the fitting hole 10 is opened from the end face of the inwardly protruding portion.

Notch 11 of the inwardly projecting portion of elbow rest 4
A mounting hole 12 is provided at the bottom of a portion corresponding to the above. A screw 13 as an example of a fastener is inserted into the mounting hole 12, while a female screw hole 14 into which the screw 13 is screwed is formed in the support member 5. ing. The lower end of the screw 13 is integrally provided with a photograph 15 made of synthetic resin or the like so that the screw 13 can be screwed by a person without a tool.
A washer (or snap ring) 16 for retaining is attached to a portion near the upper end.

At the location of the mounting hole 12, an upward counterbore hole 17 into which a washer 16 is fitted and a downward counterbore hole 18 into which a photographing 15 is fitted are formed. The upper end of the screw 13 is set so as not to protrude from the bottom surface of the fitting hole 10 when the screw 13 is dropped. Note that a plurality of screws 13 may be used, and the screws 13 do not necessarily need to be provided with washers 16.

When mounting the armrest 4, see FIG.
As shown in (A), the inwardly projecting portion of the column 6 in the armrest 4 is fitted into the support member 5 from the lateral direction, and then,
The photographer 15 picks up the finger 15 with a finger and inserts the screw 13 into the female screw 1 of the support member 5.
Just screw it into 3. Then, a state as shown in FIG. 4B is obtained. In this state, the fitting hole 10 of the armrest 4 is tightly fitted in the support member 5, so that the armrest 4 cannot be fallen and is not shifted forward and backward. And the screw 13 keeps it in a state where it cannot be pulled out and has no backlash.

If a screw 13 is provided with a slip-off prevention device such as a washer 16 as in the present embodiment, there is no need to prepare a single screw, so that there is an advantage that the trouble of managing parts can be reduced. In addition, if the screw 13 is provided with the photograph 15, it is not necessary to use a tool such as a screwdriver, so that there is an advantage that the labor of the assembling work can be reduced (the user can remove or re-install as necessary). Can be easily done).

{Other Embodiments} FIGS. 5 to 7 show other embodiments. In the second embodiment shown in FIGS. 5 and 6, a T-shaped hook 19 having a horizontal pin 19a at the upper end is used as an example of the fastener. The mounting hole 12 of the inwardly protruding portion in the elbow pad 4 is a long hole so that the horizontal pin 19a of the T-shaped hook 19 can be inserted.
The support member 5 has a horizontal pin 19 of a T-shaped hook 19.
There is an elongated hole 20 through which a can pass. A spring 21 that pushes the T-shaped hook 19 downward is provided in the downward facing counterbore 18 of the armrest 4.

Also in this example, before attaching the armrest 4, the T-shaped hook 19 is pressed downward by the spring 21, and the horizontal pin 19a is set so as not to protrude upward from the bottom surface of the fitting hole 10. Have been. In this embodiment,
After fitting the fitting hole 10 of the elbow pad 4 into the support member 5,
Holding the camera 15, insert the inwardly projecting portion of the T-shaped hook 19 into the elongated hole 20 of the support member 5 from below, and then rotate the T-shaped hook 19 horizontally by 90 degrees, so that the
Can be attached to the support member 5.

Since the fitting hole 10 of the elbow rest 4 is tightly fitted in the support member 5, the elbow rest 4 can be firmly mounted by using only the T-shaped hook 19 as in this embodiment. Can be. If the attachment hole 12 of the armrest 4 and the elongated hole 20 of the support member 5 are set to extend in the front-rear direction of the chair as in the embodiment, the armrest 4 is moved outward after the attachment. Even if such an external force acts, the T-shaped hook 19 is not displaced by the mounting hole 12 and the elongated hole 20, which is more preferable.

Although the fitting hole 10 is formed in the armrest 4 in the third embodiment shown in FIG. 7, in this example, the inward projection 9 of the armrest 4 is provided with a projection overlapping the upper surface of the support member 5. A portion 9a is formed and fitted (or buried) in the protruding portion 9a.
The screw 13 is screwed into the nut 22 while penetrating the support member 5. Note that the support member 5 in this example is formed in a gutter shape with a downward opening.

{Other} The present invention can be embodied in various forms other than the above embodiment. For example, the support member has a cross section C
Other cross-sectional shapes such as a letter shape and a hollow square shape may be used. When the support member is formed in a hollow shape such as a C-shaped cross section or a hollow square shape, the fitting portion of the armrest may be formed so as to fit into the inside of the support member. Further, at least the strut portion of the armrest of the present embodiment is preferably made of a synthetic resin from the viewpoint of ease of molding and design freedom, but may be made of a metal.

[Brief description of the drawings]

FIG. 1 is a front view of a chair.

FIG. 2 is a right side view of the chair.

FIG. 3 is an exploded perspective view of a main part.

FIG. 4A is a view showing a partway through the mounting, and FIG. 4B is a sectional view after the mounting.

FIG. 5 is an exploded perspective view of the second embodiment.

FIG. 6 is a diagram showing a phase in the middle of mounting, and FIG. 6B is a sectional view after mounting.

FIG. 7 is a diagram showing a third embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 seat plate 4 elbow rest 5 support member 6 pillar part of elbow rest 7 horizontal part of elbow rest 9 inwardly projecting part of elbow rest 10 fitting hole as an example of fitting part 12 mounting hole 13 screw as one example of fastener 14 Screw hole 15 Knob

Claims (1)

[Claims] 1. A chair comprising: a support member extending in the left-right direction in a plan view at a portion along a lower surface of a seat plate; and a lower end of a support portion of the armrest is attached to the support member. At the lower end of the strut portion, a fitting portion for fitting the support member from the left and right outer sides to hold the elbow rest so that the elbow rest cannot fall down and cannot be shifted back and forth is integrally provided. By the fastener of
A mounting structure for an armrest in a chair, wherein the mounting structure is fixed to a support member so as not to be left and right outward.