JP2973086B2 - Chair armrest equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armrest device for a chair, which can adjust an angle position of an armrest in a left-right direction with respect to a seat body according to a occupant's body type and work contents.

[0002]

2. Description of the Related Art A chair capable of adjusting an angle position of an armrest in the left-right direction in order to adjust a position of an arm depending on a occupant's body type and an adjustment position of an arm when operating a keyboard or a mouse of a personal computer. Is disclosed, for example, in Japanese Utility Model Laid-Open No. 3-109556.

[0003]

In the above-mentioned prior art,
Although the angle position of the armrest in the left and right direction can be easily changed, the support of the armrest is cantilevered with the rear part of the armrest supported by the fixed part, so it is weak against load, When a large load is applied, there is a risk that the elbow pad may be deformed or the mounting portion of the elbow pad may be damaged.

Further, since the stop of the armrest at the extreme position in the left-right direction is performed by the engagement between the left and right ends of the guide plate provided on the fixed portion and the leaf spring provided on the armrest, the armrest is stopped. When a load in the left-right direction is applied to move beyond that position at the extreme position in the left-right direction, the leaf spring may be deformed or damaged, and the armrest may return beyond the extreme position in the left-right direction. It may be lost or interfere with subsequent adjustment of the left and right elbow rests.

Further, when the elbow pad is rotated, the fixing portion in which the rear engaging grooves are arranged is exposed, and not only is the appearance bad, but also the seat of the occupant touches the fixing portion, or the fixing portion is not fixed. Clothes are caught between the leaf spring and the plate spring, and may be dirty or torn.

According to the present invention, in order to solve such a problem, the position of the elbow rest can be easily adjusted in the left-right direction when the user of the chair changes or the work content changes, and the elbow rest is added. There is no deformation or breakage of the elbow rest even under various loads, it does not hinder the adjustment of the left and right position of the elbow rest, the appearance is good, and the chair does not stain or break the clothes of the sitting person. An object of the present invention is to provide an armrest device.

[0007]

According to the present invention, the above-mentioned problem is solved as follows. (1) on top of the armrest pillar erected from the side of the seat body, before
A rearwardly facing elbow rest support is formed, and a back side of the elbow rest is formed in a sector shape that opens forward, and a fitting groove in which the elbow rest support is fitted is recessed. , as well as fitted on by applying a fitting groove of the elbow against the top surface of the armrest support portion, by pivotally with vertical axis rear portion of the armrest in the rear of the armrest support portion, said fitting In the groove
As long as the elbow rest support can move freely,
To allow the front end of the armrest to rotate in the left-right direction, and to lock the armrest at an arbitrary rotation angle position about the vertical axis between the armrest support portion and the armrest. Means are provided.

(2) In the above item (1), the elbow pad may be
The upper half of the elbow rest consists of the upper half of the rest and the lower half of the elbow rest.
A fitting groove is formed on the lower surface of the
The lower surface of the front and rear ends of the contact support is covered.

[0009] In (3) above (1) or (2) of the elbow
Protruding contact support from front and back of armrest support
It is provided so as to extend.

[0010] (4) Te (1) to (3) placed in any one of items <br/>, the locking means formed on the elbow support and elbow,
It is disposed directly above or near the armrest support, and the front end of the armrest is elastically locked to the armrest support so that the engagement relationship of the engaging means can be changed in the left-right direction.

[0011]

1 shows a chair embodying the present invention.
It is a side view of (A), and the armrest support | pillar (1) is erected from the lower part of the seat body in the right and left both sides. This armrest support
An elbow support (2) (see FIG. 2) is formed at the top of (1), and the elbow support (3) is fitted on the elbow support (2) from above.

FIG. 2 to FIG. 7 show a first embodiment of the present invention.
It is a figure which expands and shows (2) and the vicinity of an armrest (3).

As shown in FIG. 2, on the top of the armrest support (1), an armrest support (2) extending substantially horizontally in both front and rear directions.
Are formed integrally with the armrest support (1). As shown in FIG. 3, the elbow rest support 2 has a slender, constant width and a rounded rear end.

An armrest (3) is fitted on the armrest support (2). That is, as shown in FIGS. 2 and 4, the upper half (3a) of the elbow pad is put on from above, and the lower half (3b) of the elbow pad is put on from below and fitted to the upper half (3a) of the elbow pad. Match.

The back of the armrest (3), more precisely, the upper half of the armrest
On the lower surface of (3a), the rear part accommodates the rounded rear end of the elbow support part (2), and spreads out from the rear end in a fan shape forward.
The fitting groove (4) is recessed. Therefore, the elbow rest support part (2) is accommodated in the fitting groove (4).

The elbow rest (3), more specifically, the lower half of the elbow rest (3b)
The rear is pivotally connected by a vertical axis (5) to the rear of the elbow support (2). Therefore, the elbow rest (3) is moved vertically to the extreme position where the side edges (2a) (2b) abut against the inner walls (4a) (4b) of the fan-shaped fitting groove (4). It is possible to swing around (5).

At the front of the armrest (3), a horizontal axis (6) is provided, on which the operating means (7) is pivotally mounted. The operation means (7) includes an operation button (7a) which is exposed in front of the horizontal axis (6) and penetrates through the lower half of the armrest (3b). As shown in FIG. 3, a corrugated surface (8) extending upward and extending in the left-right direction is formed. This corrugated surface (8) is engaged by a spring (10) with a similar corrugated surface (9) formed on the lower surface of the front part of the elbow support (2). These corrugated surfaces (8) and (9) constitute locking means.

When the operation button (7a) is pushed up from below,
The operating means (7) rotates about the horizontal axis (6) against the force of the spring (10), and as shown in FIGS.
The corrugated surface (8) of (7) is separated from the corrugated surface (9) of the elbow support (2).

In this state, the front part of the elbow rest (3) is
It can be pivoted to any position in the left-right direction about the vertical axis (5). When the operator releases the operation button (7a), the corrugated surfaces (8) and (9) are engaged again and fixed at that position. FIG. 7 shows that one side edge (2b) of the elbow support (2) is connected to one inner wall (4) of the fitting groove (4) of the elbow support (3).
The state where the elbow rest (3) is pivoted to the extreme position where it contacts the part (b) is shown. The elbow rest (3) can likewise be pivoted to the opposite extreme position.

In a second embodiment of the present invention shown in FIGS. 8 to 10, an armrest support (2) is formed integrally on the top of an armrest support (1) so as to extend in both front and rear essential parts. An elbow pad (3) is fitted from above the elbow pad support (2). On the lower surface of this armrest (3), as in the above-described embodiment,
A fitting groove (4) is formed which extends in a fan shape from the rear to the front .

The front end of the armrest (3) is supported by an armrest support.
It is hooked on the front projection (2c) of (2), and is pivotally attached to the elbow rest support (2) by the vertical axis (5) at the rear end. The hooked portion of the armrest (3) has a shape extending in the left-right direction.

On the other hand, the upper surface of the elbow support (2) and the elbow support
On the lower surface of the fitting groove (3) of (3), near the upper part of the armrest support (1), in the fitting groove (4) of the armrest (3), a wavy portion (9) extending in the left-right direction. Further, the elbow rest supporting portion (2) is provided with a protrusion (11) that is round in the left-right direction and extends in the front-rear direction, which can engage with one of the waveforms of the waveform portion (9).

Therefore, when the elbow rest (3) is grasped and pushed in the left-right direction, the projection (2c) of the elbow rest support (2) is moved to the elbow rest (3).
Slide inside the hooked part of the
The projection (11) of (2) moves over the corrugated portion (9) of the elbow pad (3) elastically one by one. As a result, elbow rest (3)
To the inner walls (4a) and (4b) of the fitting groove (4),
Vertical axis within the limit that the side edges (2a) and (2b) of
It can be moved in the left-right direction with (5) as the center.

[0024]

According to the present invention, the load on the elbow rest is dispersed, and even if a large load is applied to the elbow rest, the elbow rest is not deformed and the mounting part of the elbow rest is not damaged. Since the stop at the extreme position of the armrest in the left and right direction is performed by both side edges of the armrest support portion and the inner wall of the fitting groove of the armrest, the position is exceeded at the extreme position of the armrest in the left and right direction. Even when the left-right direction load is applied, each member is not damaged, and there is no problem in adjusting the left-right position of the elbow pad.

According to the second aspect of the present invention , the lower half of the elbow rest
Part covers the lower surface of the front and rear ends of the elbow support
Thus, not only the appearance is good, but also the clothes of the occupant do not come into contact with the locking means and become dirty or torn.

[0026]

According to the fourth aspect of the present invention, the armrest support portion and the locking means formed on the armrest are disposed immediately above or near the armrest support column, and the front end of the armrest is provided with When the engagement relationship of the engagement means is elastically locked to the elbow rest support so that the engagement relationship can be changed in the left and right direction, no member such as an operation means is required, and the elbow rest can be moved to any lateral position. Can be moved.

[Brief description of the drawings]

FIG. 1 is a side view of a chair provided with the armrest device of the present invention.

FIG. 2 is a longitudinal sectional view of the armrest device according to the first embodiment of the present invention.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 1;

FIG. 5 is a cross-sectional view showing a different operation state of a portion surrounded by a line V in FIG. 2;

FIG. 6 is a sectional view taken along line IV-IV of FIG. 2 in a different operation state.

FIG. 7 is a cross-sectional view taken along line III-III of FIG. 2 in a different operation state.

FIG. 8 is a longitudinal sectional view of an armrest device according to a second embodiment of the present invention.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a sectional view taken along the line XX of FIG. 8;

[Explanation of symbols]

 (A) Chair (1) Armrest support (2) Elbow rest support (2a) (2b) Side edge (2c) Front protrusion (3) Elbow rest (3a) Upper half of elbow rest (3b) Elbow rest Half (4) Fitting groove (4a) (4b) Inner wall (5) Vertical axis (6) Horizontal axis (7) Operating means (7a) Operating button (8) (9) Corrugated surface (locking means) (10 ) Spring (11) Projection

Claims (4)

(57) [Claims] 1. An armrest support which is directed from the front to the back is formed on the top of an armrest support standing upright from the side of the seat body, and has a sector shape which opens forward on the back surface of the armrest .
A fitting groove into which the elbow support is fitted is recessed, the fitting groove of the elbow support is applied to the top surface of the elbow support , and the rear part of the elbow support is fitted to the elbow. After the support
Part with a vertical axis so that
Within the range in which the elbow rest support can move
Make sure that the front end of the elbow rest can rotate
One and the armrest support portion and the elbow, armrest apparatus chair, characterized in that the elbow is provided with locking means for locking at any rotational angle position around the vertical axis. 2. An elbow pad upper half and an elbow lower half
And a fitting groove is formed on the lower surface of the upper half of the elbow rest
And the front and rear ends of the armrest support with the lower half of the armrest
The armrest device for a chair according to claim 1 , wherein the lower surface of the chair is covered . 3. The armrest support portion is provided at a position between the upper end of the armrest support column and the armrest support column.
3. The armrest device for a chair according to claim 1, wherein the armrest device is provided so as to extend in both front and rear directions . 4. An armrest supporting portion and a locking means formed on an armrest are disposed immediately above or near an armrest support,
4. The front end of the elbow rest is elastically locked to the elbow rest support so that the engagement of the locking means can be changed in the left-right direction . serial <br/> placing armrest apparatus chair to.