JP2022009241A - Armrest and chair - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an armrest which looks good and has low manufacturing costs.

SOLUTION: An armrest 10 is provided for a chair and includes: an armrest body part 101 which has a flat upper surface 101A and a flat lower surface 101B, a thickness reduction hole 102 reduced in a horizontal direction in a thickness part between the upper surface 101A and the lower surface 101B, and a plurality of left and right ribs 103 that are provided inside the thickness reduction hole 102 and extend in the horizontal direction; and a connection part 104 connecting a frame of the chair or an armrest prop to the lower surface 101B. The chair is provided with the armrest 10 at an upper end part of the frame.

SELECTED DRAWING: Figure 5

COPYRIGHT: (C)2022,JPO&INPIT

Description

The present invention relates to an accoudoir and a chair.

As so-called meeting chairs (hereinafter, simply referred to as chairs) used in meetings and the like, chairs with accoudoirs are preferred because they often sit for a long time. On the other hand, since such a meeting chair needs to be easily stored, it is preferable that the chairs can be stacked in an upward direction and nesting in a horizontal direction.

The chair should have a simple structure so that it can be stored by stacking or nesting. In addition, since many are often used, it is necessary to keep the unit price per unit low.

Many of the conventional chairs with elbows have a synthetic resin molded accoudoir in order to keep costs down, and many of the chairs have ribs that are lightened from the lower surface side. Such a lightened accoudoir can reduce the amount of material, but the ribs are exposed on the lower surface, and the appearance and feel are not good.

In order to improve the appearance and feel, the accoudoir must be composed of a plurality of parts, and these parts must be assembled with screws (for example, Patent Document 1). Therefore, the manufacturing cost was not sufficiently low even if the meat was removed.

Japanese Patent Application Laid-Open No. 2003-10002

An object to be solved by the present invention is to provide an accoudoir and a chair that look good and have a low manufacturing cost by devising a device that does not cause molding shrinkage (shrinkage).

In order to solve the above-mentioned problems, the accoudoir according to the present invention is an accoudoir provided on a chair, and the meat is lightened in the left-right direction on a flat upper surface, a flat lower surface, and a thick portion between the upper surface and the lower surface. It is provided with a punching hole, an accoudoir main body portion provided inside the lightening hole and having a plurality of left and right ribs extending in the left-right direction, and a connecting portion for connecting the chair frame or the accoudoir support column to the lower surface.

According to the present invention, there is an effect that it is possible to provide an accoudoir having a good appearance and a low manufacturing cost.

Perspective view of the chair. Front view of the chair. Floor plan of the chair. Right side view of the chair. A perspective view of the right armrest. Right side view of the right accoudoir. Left side view of the right accoudoir. Bottom view of the right armrest. Rear view of the right accoudoir. FIG. 9 is a sectional view taken along line AA of the main body of the accoudoir in FIG. FIG. 9 is a cross-sectional view taken along the line BB in FIG. 9 of the main body of the accoudoir according to the application example. Right side view of the accoudoir showing the protrusion.

Hereinafter, the accoudoir 10 and the chair 1 according to the embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view of the chair 1, FIG. 2 is a front view of the chair 1, FIG. 3 is a plan view of the chair 1, and FIG. 4 is a right side view of the chair 1.

As shown in FIGS. 1 to 4, the chair 1 includes a seat portion 28, a frame 23, a backrest 21, an elbow rest 10, a rear leg portion 25B, and a front leg portion 25A.

The seat 28 has a cushion on the upper surface. The frame 23 rotatably supports the seat 28 from both sides of the seat 28. The front leg portion 25A is attached to the lower end portion of the frame 23 in the floor direction. A seat support portion 26 is bridged over the upper end portions of the pair of front leg portions 25A. The seat support portion 26 regulates the rotation of the seat portion 28 toward the floor surface in the sitting position.

The frame 23 is further attached with a rear leg portion 25B below the upper end portion. The frame 23 has a crank portion that bends toward the center, which is the seat portion direction, below the mounting portion of the seat portion 28. Therefore, the outer width of the pair of front leg portions 25A is narrower than the width of the pair of rear leg portions 25B. The front leg portion 25A of the other chair 1 can be inserted between the pair of rear leg portions 25B, and nesting becomes possible. A bumper 24 made of a flexible resin is installed on the crank portion. Therefore, it is possible to soften the impact during nesting and guide the chair 1 to an appropriate position. Castors 27 are attached to the floor surface direction ends of the front leg 25A and the rear leg 25B.

A backrest 21 is installed on the upper side of the upper end portion of the frame 23 via the backrest support portion 22. The backrest 21 is formed of, for example, resin, and is provided with a plurality of holes. (In the drawings other than FIG. 1, the hole portion is not shown.) The upper end portion of the rear leg portion 25B extends inside the backrest support portion 22.

The accoudoir 10 is installed on the frame 23 via the backrest support portion 22. The elbow rest 10 has a length in the front-rear direction (hereinafter, simply referred to as the front-back direction) when seated is approximately ½ of the length in the front-rear direction of the seat portion 28. Therefore, when nesting, the accoudoirs 10 do not interfere with each other.

5 is a perspective view of the right accoudoir 10, FIG. 6 is a right side view of the right side accoudoir 10, FIG. 7 is a left side view of the right side accoudoir 10, FIG. 8 is a bottom view of the right side accoudoir 10, and FIG. 9 is a right side view. It is a rear view of the elbow rest 10. Since the left and right accoudoirs 10 are symmetrical, only the right side accoudoir 10 will be described below.

As shown in FIGS. 5 to 9, the accoudoir 10 includes an accoudoir main body 101 having a flat upper surface 101A and a flat lower surface 101B. The accoudoir main body 101 has a shape that draws an arc that is slightly convex upward. The height of the front end of the accoudoir main body 101 from the floor surface is slightly higher than that of the rear end of the accoudoir main body 101. A connecting portion 104 connecting to the backrest support portion 22 is provided on the lower surface of the accoudoir main body 101. The connection portion 104 has a protrusion 107 (see FIG. 12), but the protrusion 107 is not shown except for FIG.

The accoudoir main body 101 has a through hole 102, which is a lightening hole that penetrates in the left-right direction (hereinafter, simply referred to as the left-right direction) when seated, in a thick portion between the upper surface 101A and the lower surface 101B. Further, the accoudoir main body 101 has a plurality of left and right ribs 103 extending in the left-right direction inside the through hole 102. This lightening hole has enough space to prevent shrinkage in the thickness direction.

The accoudoir main body 101 can be formed by using a resin such as nylon containing glass fiber as a forming material. Since the accoudoir main body 101 has a through hole 102, the amount of the forming material used can be reduced, the manufacturing cost can be kept low, and the weight can be reduced.

The left and right ribs 103 are installed at predetermined intervals and have a wall thickness thinner than the wall thickness of the accoudoir main body 101. Since the width of the left and right ribs 103 is slightly shorter than the width of the accoudoir main body 101, it is not visible when seated.

Since the accoudoir main body 101 has left and right ribs in the through hole 102, it is possible to obtain the required rigidity.

As shown in FIG. 8, the connecting portion 104 covers an area of more than half of the lower surface 101B of the accoudoir main body 101, and has a so-called funnel shape in which the inner diameter narrows toward the lower end. Therefore, the weight applied to the accoudoir main body 101 can be released to the lower end of the connection portion 104.

When the accoudoir main body 101 and the connecting portion 104 are integrally molded from the same material, the manufacturability is good in terms of manufacturing cost, shortening of manufacturing time, and the like. However, on the other hand, if the integrally molded accoudoir has a portion where the thickness increases, cooling shrinkage of the resin, so-called "shrinkage", tends to occur in the portion having the thickness. Therefore, in the present embodiment, the elbow rest main body 101 is provided with a lightening (through hole 102) in the left-right direction.

As a result, the upper surface of the through hole 102, that is, the upper surface 101A of the accoudoir main body 101 becomes thinner, so that it is possible to avoid the occurrence of “shrinkage”. Since the upper surface 101A of the accoudoir main body 101 constitutes the top surface of the accoudoir 10 and is a portion that is easily visible from the outside, it is possible to improve the appearance and feel by avoiding “shrinking”.

On the other hand, the lower side of the through hole 102, that is, the lower surface 101B of the accoudoir main body 101 is integrally continuous with the connection portion 104, so that the thickness is inevitably increased and "shrinkage" occurs. However, since the "shrinkage" that occurs in this case occurs inside the through hole 102, it cannot be visually recognized from the outside. Therefore, it is possible to improve the appearance and feel of the accoudoir 10.

That is, by setting the through hole 102 of the accoudoir main body 101 to a height such that the “shrink” generated in the through hole 102 (upper side of the lower surface 101B) cannot be visually recognized from the left-right direction, the appearance of the accoudoir 10 can be improved. It can be nice to the touch.

Of the accoudoir 10, at least the accoudoir main body 101 and the connecting portion 104 are integrally molded to reduce the number of parts, which is desirable in terms of reducing the manufacturing cost.

10 is an AA line sectional view of the accoudoir main body 101 in FIG. 9, and FIG. 11 is a BB line sectional view of the accoudoir main body 101 according to an application example.

In the embodiment shown in FIG. 10, the through hole 102 penetrates in the left-right direction. Such a through hole 102 is preferably formed by pulling out the core of the mold in one of the left and right directions at the time of molding the accoudoir main body 101, but is not limited to this, and each of the left and right directions at the time of molding. You may try to pull out the core from.

In the application example shown in FIG. 11, the accoudoir main body 101 has a front-rear rib 105 extending in the front-rear direction inside the through hole 102. In this case, the through hole 102 becomes a lightening hole 106 that does not penetrate in the left-right direction, and the accoudoir 10 has the front and rear ribs 105 between the upper surface 101A and the lower surface 101B inside the lightening hole 106.

Such a through hole 102 is suitably formed by pulling out the core from each of the left and right directions in a state where the cores in the left and right directions do not come into contact with each other during the molding of the accoudoir main body 101. At this time, if the cores in the left-right direction are brought close to each other, the thickness of the upper surface 101A of the accoudoir main body 101 does not become thick enough to cause "shrinkage" due to the front and rear ribs 105, as described above. It is possible to improve the appearance and feel of the top surface of the accoudoir 10.

By providing the front and rear ribs 105, the load capacity is further increased.

FIG. 12 is a right side view of the accoudoir 10 illustrating the protrusion 107. As shown in FIG. 12, the accoudoir 10 has a protrusion 107 at the lower end of the connecting portion 104 having a width narrower than the width of the connecting portion 104.

A nut 108 threaded inward is integrally formed on the protrusion 107. The backrest support portion 22 has a bolt hole at a position corresponding to the nut 108, and the accoudoir 10 is fixed to the chair 1 by inserting a bolt into the bolt hole and the nut 108 and tightening the bolt.

The accoudoir 10 of the present embodiment can be applied not only to the meeting chair but also to the accoudoir of the office chair in which the accoudoir is not movable. The office chair is equipped with accoudoir struts to support the accoudoirs on both sides of the seat. The accoudoir 10 is installed at the upper end of the accoudoir column. Needless to say, the accoudoir 10 may be an accoudoir having a vertical elevating mechanism (that is, one in which the accoudoir strut moves up and down).

As described above, the chair 1 of the present embodiment has an accoudoir main body 101 having a through hole 102 lightened in the left-right direction and a left-right rib 103 provided inside the through hole 102 and extending in the left-right direction. To prepare for.

Therefore, there is an effect that it is possible to provide a chair having an accoudoir 10 that looks good and has a good touch, and has a low manufacturing cost.

1 Chair 10 Accoudoir 22 Backrest support 23 Frame 24 Bumper 25A Front leg 25B Rear leg 26 Seat support 27 Caster 28 Seat 101 Accoudoir body 101A Top 101B Bottom 102 Through hole 103 Left and right rib 104 Connection 105 Front and rear ribs 106 Lightening hole 107 Protrusion 108 Nut

The present invention relates to an accoudoir and a chair.

As so-called meeting chairs (hereinafter, simply referred to as chairs) used in meetings and the like, chairs with accoudoirs are preferred because they often sit for a long time. On the other hand, since such a meeting chair needs to be easily stored, it is preferable that the chairs can be stacked in the upward direction and nesting in the front-rear direction.

The chair should have a simple structure so that it can be stored by stacking or nesting. In addition, since many are often used, it is necessary to keep the unit price per leg low.

Many of the conventional chairs with elbows have a synthetic resin molded product with an accoudoir in order to keep costs down, and many of the chairs have ribs that are lightened from the lower surface side. Such a molded type accoudoir with the lower surface side lightened can reduce the amount of raw material used, but the ribs are exposed on the lower surface, and the appearance and feel are not good.

In order to improve the appearance and feel, the accoudoir must be composed of a plurality of parts, and these parts must be assembled with screws (for example, Patent Document 1). Therefore, the manufacturing cost was not sufficiently low even if the meat was removed.

Japanese Patent Application Laid-Open No. 2003-10002

An object to be solved by the present invention is to provide an accoudoir and a chair that look good and have a low manufacturing cost by devising a device that does not cause molding shrinkage (shrinkage).

In order to solve the above-mentioned problems, the accoudoir according to the present invention is an accoudoir provided on a chair, and has a flat upper surface, a lower surface substantially parallel to the upper surface, and a thickness portion between the upper surface and the lower surface in the left-right direction. The chair is provided with an accoudoir main body having a lightening hole that has been lightened through and a plurality of left and right ribs extending in the left-right direction provided by the lightening hole, and the accoudoir main body is provided through a connection portion of the chair. It is installed at the upper end of the frame or the accoudoir strut, and the lightening hole is characterized by allowing air to flow between the left and right side surfaces of the accoudoir main body.

According to the present invention, there is an effect that it is possible to provide an accoudoir having a good appearance and a low manufacturing cost by devising a device that does not cause molding shrinkage.

The perspective view of the chair using the accoudoir of this invention. Front view of the chair in FIG. Top view of the chair of FIG. The right side view of the chair of FIG. Perspective views of the right armrest in the chairs of FIGS. 1 to 4. The right side view of the accoudoir of FIG. The left side view of the accoudoir of FIG. Bottom view of the accoudoir of FIG. The rear view of the accoudoir of FIG. FIG. 9 is a sectional view taken along line AA of the accoudoir of FIG. A vertical sectional front view of an accoudoir main body according to an application example of the present invention. The right side view of the example which provided the protrusion in the lower part of the elbow rest of this invention.

Hereinafter, the accoudoir 10 and the chair 1 according to the embodiment of the present invention will be described with reference to the drawings.
1 is a perspective view of the chair 1, FIG. 2 is a front view of the chair 1 of FIG. 1, FIG. 3 is a plan view of the chair 1 of FIG. 1, and FIG. 4 is a right side view of the chair 1 of FIG. In the present specification, the left and right are the directions along the left and right of the seating direction of the chair, the front and back are the directions along the front and back of the seating direction, and the top and bottom are the directions along the upper and lower sides with respect to the seating surface.

As shown in FIGS. 1 to 4, the chair 1 includes a seat portion 28, left and right frames 23, a backrest 21, left and right backrest support portions 22, an accoudoir 10, a rear leg portion 25B, and a front leg portion. It is equipped with 25A.

The seat 28 has a cushion on the upper surface. The left and right frames 23 support the seat 28 from the left and right side surfaces of the seat 28 so as to be undulating and rotatable. The left and right front legs 25A are attached to the lower ends of the left and right frames 23 in the floor direction. A seat support portion 26 is bridged over the upper ends of the pair of left and right front leg portions 25A. The seat support portion 26 regulates the rotation of the seat portion 28 toward the floor surface (downward rotation) in the sitting position.

Further, the left and right rear legs 25B are attached to the left and right frames 23 on the lower surface side of the upper end portion. The left and right frames 23 have a crank portion bent toward the center of the seat portion below the mounting portion of the seat portion 28. Therefore, the outer width of the pair of left and right front leg portions 25A provided at the lower end portion of the crank portion is narrower than the inner width of the pair of left and right rear leg portions 25B. With this configuration, the pair of front leg portions 25A of the other chair 1 can be inserted between the pair of rear leg portions 25B, and nesting becomes possible. A bumper 24 made of a flexible resin is installed on the outer surface of the crank portion. Therefore, it is possible to soften the impact with other chairs during nesting and guide the chair 1 to an appropriate position. A caster 27 is attached to the floor surface direction end portion (lower end portion) of the front leg portion 25A and the rear leg portion 25B.

A backrest 21 is installed on the upper side of the upper end of the left and right frames 23 via the backrest support portion 22. The backrest 21 is formed of, for example, resin, and is provided with a plurality of holes. (In the drawings other than FIG. 1, the hole portion is not shown.) The upper end portion of the rear leg portion 25B extends inside the backrest support portion 22.

The left and right accoudoirs 10 are respectively installed on the left and right frames 23 via the left and right backrest support portions 22. The elbow rest 10 of the present embodiment has a length in the front-rear direction (hereinafter, simply referred to as simply referred to as the front-back direction) when seated, which is approximately ½ of the length in the front-rear direction of the seat portion 28. Therefore, when nesting, the accoudoirs 10 do not interfere with each other.

5 is a perspective view of the accoudoir 10 on the right side (right side when viewed from the seated person, hereinafter the same) in the chair of FIG. 1, FIG. 6 is a right side view of the accoudoir 10 of FIG. 5, and FIG. 7 is a view of the right side of the accoudoir 10 of FIG. 10 is a left side view, FIG. 8 is a bottom view of the accoudoir 10 of FIG. 5, and FIG. 9 is a rear view of the accoudoir 10 of FIG. Since the left and right accoudoirs 10 are symmetrical, only the right side accoudoir 10 will be described below.

In the present embodiment shown in FIGS. 5 to 9, the accoudoir 10 includes an accoudoir main body 101 having a flat upper surface 101A and a flat lower surface 101B. The accoudoir main body 101 has a shape that draws an arc that is slightly convex upward. The front end of the accoudoir body 101 is slightly higher than the rear end of the accoudoir body 101 from the floor surface. That is, it is a form that is slightly lifted toward the front when viewed from the side. A connecting portion 104 connecting to the backrest support portion 22 is provided on the lower surface of the accoudoir main body 101. The connection portion 104 includes a protrusion 107 (see FIG. 12), but the protrusion 107 is not shown except in FIG. 12.

The accoudoir main body 101 has a through hole 102, which is a lightening hole that penetrates in the left-right direction (hereinafter, simply referred to as the left-right direction) when seated, in a thick portion between the upper surface 101A and the lower surface 101B. By having the through hole 102, the accoudoir main body 101 has a wall thickness on the upper surface 101A side and a wall thickness on the lower surface 101B side, and the front and rear ends of the upper surface 101A and the lower surface 101B are hairpins as shown in FIGS. 5 to 7. It becomes a form connected in a shape.
Here, the accoudoir main body 101 has a plurality of left and right ribs 103 extending in the left-right direction inside the through hole 102. The through hole 102 is divided into a plurality of through holes by the plurality of left and right ribs 103. This lightening hole (through hole 102) has sufficient space to prevent shrinkage in the thickness direction. Further, since the lightening hole is formed in the through hole 102 having the left and right ribs 103 penetrating in the left-right direction of the accoudoir main body 101, air flows between the left and right side surfaces of the accoudoir main body 101 and is used by this circulation. The temperature rise of the accoudoir body 101, which is sometimes warmed by the seated person's elbows and arms, is suppressed.

The accoudoir main body 101 can be molded by using a resin such as nylon containing glass fiber as a molding material. In this case, since the accoudoir main body 101 is provided with a through hole 102 having a rib 103, the amount of molding material used can be reduced, the manufacturing cost can be kept low, and the weight can be reduced.

The left and right ribs 103 are installed inside the lightening holes (through holes 102) at predetermined intervals, and are formed to be thinner than the wall thicknesses of the upper surface 101A side and the lower surface 101B side of the accoudoir main body 101. ing. Further, the left-right width of the left-right rib 103 is formed to be slightly shorter than the left-right width of the accoudoir main body 101, making it difficult for a seated person to see.

Since the accoudoir main body 101 has left and right ribs 103 inside the through hole 102, the required rigidity can be obtained.

Next, as shown in FIGS. 6 to 8, the connecting portion 104 has a so-called funnel shape in which the upper end thereof covers an area of approximately half or more of the lower surface 101B of the accoudoir main body 101 and the inner diameter narrows toward the lower end. Eggplant. Therefore, the weight applied to the accoudoir main body 101 can be released to the lower end of the connection portion 104. The connection portion 104 is not limited to the so-called funnel shape.

If the accoudoir main body 101 and the connecting portion 104 are integrally molded of the same material, the manufacturability is improved in terms of reduction of manufacturing cost and shortening of manufacturing time (manufacturing process). However, on the other hand, if the integrally molded accoudoir has a portion where the thickness increases, cooling shrinkage of the resin, so-called "shrinkage", tends to occur in the portion having the thickness. Therefore, in the present embodiment, the elbow rest main body 101 is provided with a lightening (through hole 102) penetrating in the left-right direction. It should be noted that the connection portion 104 may be provided with a lightening to prevent shrinkage.

As a result, the thickness of the upper surface 101A side of the accoudoir main body 101 is reduced by the through hole 102, so that it is possible to avoid the occurrence of "shrinkage". The upper surface 101A of the accoudoir main body 101 constitutes the top surface (contact surface with the elbow and arm) of the accoudoir 10 and is a part that is easily visible from the outside. Can be.

On the other hand, when the lower side of the through hole 102, that is, the side of the lower surface 101B of the accoudoir main body 101 is integrally continuous with the connection portion 104, the thickness is inevitably increased and "shrinkage" is likely to occur. However, since the "shrinkage" that occurs in this case occurs inside the through hole 102, it cannot be visually recognized from the outside. Therefore, the appearance and feel of the top surface of the accoudoir 10 are not impaired.

That is, even if "shrinkage" occurs on the upper side of the lower surface 101B in the through hole 102, by setting the through hole 102 of the accoudoir main body 101 to a height that cannot be visually recognized from the left-right direction, the appearance of the entire accoudoir 10 can be seen. And feel good.

It is desirable that at least the accoudoir main body 101 and the connecting portion 104 of the accoudoir 10 are integrally molded in terms of reducing the number of parts and reducing the manufacturing cost.

10 is a cross-sectional view taken along the line AA of the accoudoir main body 101 in FIG. 9, and FIG. 11 is an enlarged cross-sectional view of the accoudoir main body 101 according to an application example of the accoudoir of the present invention longitudinally crossed from the front of FIG.

In the accoudoir of the present embodiment shown in FIG. 10, the through hole 102 penetrates the accoudoir main body 101 in the left-right direction (direction perpendicular to the paper surface in the figure). Such a through hole 102 is suitably formed by pulling out the core of the mold in either the left-right direction at the time of molding the accoudoir main body 101. Of course, the present invention is not limited to this, and the core may be removed from each of the left and right directions at the time of molding.

In the application example shown in FIG. 11, the accoudoir main body 101 has a front-rear rib 105 extending in the front-rear direction inside the through hole 102 that has penetrated in the previous embodiment. In this case, the through hole 102 is a lightening hole 106 that does not penetrate in the left-right direction. In the accoudoir 10 of the application example, the front and rear ribs 105 are provided between the upper surface 101A and the lower surface 101B inside the lightening hole 106.

The non-penetrating lightening hole 6 shown in FIG. 11 is suitably molded by pulling out the core from each of the left and right directions in a state where the cores in the left and right directions do not come into contact with each other during molding of the accoudoir main body 101. At this time, if the cores in the left-right direction are set to be closer to each other, the thickness of the front and rear ribs 105 to be formed is so thick that the thickness of the upper surface 101A of the accoudoir main body 101 is “closed”. It will never be. Therefore, it is possible to improve the appearance and feel of the top surface of the accoudoir 10 in the above-described embodiment.

In the application example of FIG. 11, the load capacity is further increased by providing the front and rear ribs 105.

FIG. 12 is a right side view of the accoudoir 10 in which the protrusion 107 is shown at the lower end of the connecting portion 104. As shown in FIG. 12, the accoudoir 10 has a protrusion 107 at the lower end of the connecting portion 104 having a width narrower than the width of the connecting portion 104.

A nut 108 threaded inward is integrally formed on the protrusion 107 in FIG. 12. The backrest support portion 22 has a bolt hole at a position corresponding to the nut 108, and the accoudoir 10 is fixed to the chair 1 by inserting a bolt (not shown) into the bolt hole and the nut 108 and tightening them together. Will be done.

The accoudoir 10 of the present embodiment can be applied not only to the meeting chair but also to the accoudoir of the office chair in which the main body of the accoudoir is not movable. Some office chairs are provided with accoudoir struts as support members for supporting the accoudoirs 10 on both sides of the seat. The accoudoir 10 has an accoudoir main body 101 installed at the upper end of a support member. There is also a chair frame as a support member for the accoudoir. Needless to say, the accoudoir 10 may be an accoudoir having a vertical elevating mechanism (that is, one in which the accoudoir strut moves up and down).

As described above, the chair 1 of the present embodiment has an accoudoir main body 101 having a through hole 102 lightened in the left-right direction and a left-right rib 103 provided inside the through hole 102 and extending in the left-right direction. To prepare for.

Therefore, the present invention has an effect that since the top surface of the accoudoir does not shrink, it is possible to provide an accoudoir having a good appearance and a good touch, and a chair having the accoudoir at a low manufacturing cost.

1 Chair 10 Accoudoir 22 Backrest support 23 Frame 24 Bumper 25A Front leg 25B Rear leg 26 Seat support 27 Caster 28 Seat 101 Accoudoir body 101A Top 101B Bottom 102 Through hole 103 Left and right rib 104 Connection 105 Front and rear ribs 106 Lightening hole 107 Protrusion 108 Nut

Claims (7)

An accoudoir installed on a chair
A flat upper surface and a flat lower surface, a lightening hole that is lightened in the left-right direction in a thick portion between the upper surface and the lower surface, and a plurality of left and right ribs that are provided inside the lightening hole and extend in the left-right direction. With the main body of the accoudoir
An accoudoir including a connection portion connecting the frame or accoudoir support of the chair and the lower surface. The lightening hole is
The elbow rest according to claim 1, which is a through hole penetrating in the left-right direction. The connection part is
The accoudoir according to claim 1, further comprising a lightening hole in the left-right direction, which is integrally formed of the same material as the main body of the accoudoir and has sufficient space to prevent shrinkage in the thickness direction. The elbow rest according to claim 1, wherein front and rear ribs extending in the front-rear direction are provided inside the lightening hole. The elbow rest according to any one of claims 1 to 4, which is formed of nylon containing glass fiber. With the seat
A frame that rotatably supports the seat from the left and right,
The front and rear legs attached to the lower end of the frame,
A backrest installed at the upper end of the frame via a backrest support portion,
The elbow rest according to any one of claims 1 to 5, which is installed at the upper end of the frame via the backrest support portion.
A chair equipped with. The frame is
The chair according to claim 6, further comprising a crank portion for installing the front legs so that the outer width of the pair of front legs is narrower than the width of the pair of rear legs.

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