JPH07265170A - Armrest of chair - Google Patents

Abstract

PURPOSE: To obtain a chair corresponding to various kinds of armrests with a simple process, by equipping a mounting member on the rear end parts of first and second frame members detachably on upper and lower sides of a chair frame and detachably attaching an armrest pad with the fitting part of a horizontal part of an armrest member and the mounting member. CONSTITUTION: This armrest member is made of a round rod of iron, etc. At first, the tip end 10a of a first frame member 10 is downward bent, a horizontal part 11c is formed by the tip end part of a second frame member 11, and those are crossed at right angles and welded. Tubular members 10b, 11b are welded to the end parts of first and second frame members 10, 11. Next, a retaining part 12c of an armrest pad 12 is inserted into a tubular piece 10b equipped on the first frame member 10 and the first frame member 10 is fit in a groove part. When the frame member is rotated as it is, a fitting part 12d is fit in to a crossing part of the tip end parts 10a of the first and second frame members 10, 11 and a claw equipped on a guide 13 bites the tip end part 10a to fit a notch 15 in the tip end part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armrest of a chair used at home or office.

[0002]

2. Description of the Related Art Chairs have various structures depending on the purpose and price, so that even if they continue to sit for a long time, they are less fatigued.
The components are made by combining various materials such as wood, metal, urethane foam, vinyl leather, nylon fiber, and natural leather. In addition, the materials are firmly combined to withstand years of use. Therefore,
We often use welding, bonding, and sewing. In addition, many armrests have been put on the market as a means for preventing the user from getting tired even after sitting for a long time. There are two types of armrests, one that is integrated with the frame that forms the skeleton of the chair, and one that has a separate armrest frame. The latter is often removable from the chair. Cushion materials are usually attached to the armrests to improve comfort. As a conventional example, a mounting member for an armrest of a chair is disclosed in Japanese Utility Model Publication No. 60-77451.

[0003]

In the mounting member for the armrest of the chair, the mounting member is provided in the seat portion for mounting the armrest member on the chair, which has led to an increase in the number of constituent parts. Since the mounting member is provided on the seat,
The frame structure of the chair became complicated. Further, the cushion material and the armrest frame are fixed by screws or the like, and the cushion material is also constructed such that an inner wrapping material such as urethane foam and an upholstery are laminated together. Therefore, the manufacturing process was complicated. In recent years, environmental pollution due to waste has become popular, and reducing the amount of waste has become a common issue for industrial products.However, since there are many component parts, a large amount of dust is generated at the time of disposal. The one in which members having different properties, such as a cushion material, are integrated, which makes it difficult to separate the materials.

The present invention has been made in order to solve the above-mentioned conventional problems, and an object of the present invention is to reduce the cost of parts by forming the armrest member of the chair with a small number of parts and a simple structure. (EN) A chair armrest for a chair that simplifies the manufacturing process and facilitates disposal by suppressing each of the parts and allowing each part to be easily attached and detached.

[0005]

In order to achieve the above object, the present invention comprises a round bar made of metal such as iron having the same diameter,
Further, the first frame member or the second frame member having the first frame member and the second frame member joined at the tip end portion is provided.
A horizontal portion is formed at the tip of the frame member, and a mounting member for a chair is integrally attached to the rear ends of the first and second frame members, and the mounting member is detachably attached to the frame of the chair in a vertical relationship. An armrest pad having a fitting portion between the horizontal portion of the armrest member and the mounting member is detachably attached to the upper mounting member and the horizontal portion.

In the present invention, the attachment member is a tubular piece having a stepped portion in the middle portion of the inner tubular portion, and the engaging portion for the chair has a diameter that fits inside the inner tubular portion of the tubular piece. It is desirable to have a rod body. Alternatively, the attachment member may be capable of holding a part of the backrest frame structure by a columnar member which is divided into two in the vertical direction.

Further, a main body portion extending along the first frame member and provided with a groove portion into which the first frame member is fitted, and a holding portion having an inner diameter capable of sliding around the outer periphery of the tubular piece, It is desirable that the armrest pad including the horizontal portion and the detachable fitting portion be integrally formed of an elastically deformable material.

[0008]

The chair, the armrest member, and the armrest pad can be detached from each other so that they can be manufactured separately.
Since the frame member of the armrest member is a round bar, it can be bent easily and has high rigidity. Further, since it can be fixed by welding, a small amount of engaging members such as screws can be used, and the engagement does not loosen after long-term use. Further, since the frame structure of the backrest of the chair is used for mounting the armrest member, it is not necessary to provide a new mounting member, and the structure is simple. Since the armrest also moves along with the change in the backrest angle, the positional relationship between the armrest and the elbow can always be kept good. Moreover, by attaching the armrest pad having the fitting portion with the armrest member, the armrest pad can be easily attached and detached.

In the present invention, the mounting member is a tubular piece having a stepped portion in the middle portion, and the engaging portion is a rod body having a diameter that fits inside the inner tubular portion of the tubular piece. As a result, the mounting can be reliably performed only by inserting the tubular piece into the engaging portion of the chair which is the rod body. Further, if the rod body having the engaging portion is used as a backrest frame of a chair, the number of constituent parts of the chair can be reduced.

Further, in the case where the mounting member is a columnar member which is divided into two in the vertical direction and a part of the backrest frame structure can be held by the mounting member, an engaging portion is particularly provided in the backrest frame structure. There is no need. Therefore,
It is possible to attach the armrest member directly to the frame structure of the backrest of the chair.

Also, extending along the first frame member,
A main body portion provided with a groove portion into which the first frame member is fitted,
A holding portion having an inner diameter capable of sliding around the outer periphery of the tubular piece;
The armrest pad, which is composed of the distal end portion of the second frame member and the detachable fitting portion, is integrally formed of an elastically deformable material, so that the structure of the armrest pad is simplified.
Further, since the armrest pad is integrally formed, the number of manufacturing steps is small, the cost is low, and the handling is easy. Further, it is not necessary to use an engaging member such as a screw for attaching and detaching the armrest pad, and it is not necessary to use a jig or the like.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

First, the structure of the chair using the first embodiment will be described. In the first frame member structure of the present invention shown in FIG. 1, only solid rods having the same diameter and the same material are used. The solid rod is preferably a round rod made of metal such as iron. A solid rod curved in a U shape is used as the base frame 1, and both ends 1a, 1a are arranged forward. The side frames 2 and 2 are welded rearward near both ends 1a and 1a. The side frames 2 and 2 have a first bent portion 2b on the upper portion of the first steep slope portion 2a to form a gentle slope portion 2c, and further, a gentle slope portion 2c.
The second bent portion 2d is provided on the rear side of the above, and the second steeply inclined portion 2e is formed above the second bent portion 2d. A first reinforcing frame 4 is installed between the second bent portions 2d, 2d, and a second reinforcing frame 5 is installed between the recesses 3 and 3 provided in the middle of the second steep slope 2e. At the first and second reinforcing frame end portions 4a and 5a,
A female thread is provided. In addition, the base frame 1
The both ends 1a, 1a are erected by welding the ends of the front support frame 6 curved in a U shape. further,
The recesses 3, 3 are formed in the middle of the base frame, and the third reinforcing frames 7, 7 are provided between the recesses 3 and the recesses 3 provided on the first steep slope 2a of the side frame 2 and the front support frame 6. It is installed by welding.

A seat portion 8 is attached across the upper side 6a of the front support frame 6 and the first reinforcing frame 4, and a backrest 9 is mounted on the second steep slope portion 2e of the side frame 2 and the second reinforcing frame 5. Install. Where the side frame 2
A portion formed by the second reinforcing frame 5 and the like is particularly referred to as a backrest frame structure.

The armrest member attaches the end portions 4a, 5a of the first and second reinforcing frames 4, 5 as engaging portions. The armrest pad 12 is separate from the armrest member.

Here, the structure of the armrest of the chair will be described. The armrest member of the chair shown in FIGS. 2 and 3 is composed of a round bar made of metal such as iron. First, the first frame member
Bend the tip portion 10a of the 10 downward to form the second frame member 11
The front end portion 11a is bent horizontally to form a horizontal portion 11c, and the front end portions 10a and 11a are welded to be orthogonal to each other. Also, the first
The second frame member has tubular pieces 10b and 11b which are attachment members at the ends, and the tubular pieces 10b and 11b are frame members.
It is welded to the 10 and 11 ends. Also, the tubular pieces 10b and 11b
The inner cylinder portion of the chair has a diameter into which the ends 4a and 5a of the first and second reinforcing frames 4 and 5 of the chair are fitted. Further, a small-diameter step portion is provided in the middle portion of the inner tubular portion. The tubular piece 10b provided on the first frame member 10 is formed to be longer than the width of the armrest pad 12 for attaching a holding portion 12c of the armrest pad 12 described later. The horizontal portion is the first frame member 10
It may be formed by bending the tip of the above in the horizontal direction.

Next, the armrest pad 12 will be described with reference to FIGS. The main body portion 12a of the armrest pad 12 has a shape extending along the shape of the first frame member 10. The main body portion 12a has a cross section in which a plurality of ribs are provided upright from the bottom surface, and the height of the ribs increases from the side portion toward the central portion. This gives strength to the armrest pad,
In addition, it is necessary to have an appropriate thickness in order to improve the feel when gripped with a hand, and to have the shape required for an injection-molded part suitable for mass production. That is, when the thickness of the molded part is increased, sink marks,
Although appearance defects such as overall distortion are likely to occur, forming the rib shape and providing the groove portions can suppress the occurrence of the defects and reduce the unit cost of parts. Of the ribs, the height of one of the ribs at the center is set to be low, and a groove portion 12b having a width into which the first frame member can be inserted is provided between the side portions of the ribs standing on both sides of the rib. Also, the tubular piece 11b
A holding portion 12c having an inner diameter capable of sliding around the outer periphery of the second frame member 11 and a tip portion 11a of the second frame member 11 and a detachable fitting portion 12d are integrally formed.

The armrest pad 12 is integrally formed of an elastically deformable material such as synthetic resin. For example, polypropylene, polyethylene, polystyrene, styrene copolymer,
Polyamide, ABS resin, etc. are desirable. The holding portion 12c is
It surrounds the tubular piece 10b for 2/3 or more rounds, and is not connected all around so that the first frame member 10 can pass therethrough. A guide 13 is erected on the fitting portion 12d along the groove 12b, and a claw 14 for holding the tip portion 10a of the first frame member 10 is provided. Also, the guide 13 has a second
A notch 15 for fitting the frame member 11 is provided.

A method of attaching the armrest member will be described with reference to FIG. The first and second reinforcing frame end portions 4a and 5a of the chair are used as the engaging portions with the armrest members, and the inner tubular portions of the tubular pieces 10b and 11b are used as the first and second reinforcing frame end portions 4a and 5a. To insert. The flange portion provided in the middle portion of the tubular piece is brought into contact with the end surfaces of the end portions 4a and 5a to perform positioning. Tubular piece
The armrest member is fixed to the backrest of the chair by screwing 10b and 11b and the ends 4a and 5a with fixing screws B1 and B2.

Next, a method of attaching the armrest pad 12 will be described with reference to FIG. Holding part 12c for armrest pad 12
Is inserted into the tubular piece 10b provided on the first frame member 10,
Rotate in the direction of arrow A to fit the first frame member into the groove 12b. When it is rotated as it is, the fitting portion 12d is fitted to the intersection of the tip portions 10a, 11a of the first and second frame members 10, 11, and the claw 14 provided on the guide 13 is attached to the tip portion 10.
Hold a and insert the notch 15 into the tip 11a. Therefore, the armrest pad 12 is firmly fixed to the armrest member by the holding portion 12c and the fitting portion 12d. Because the tip is fixed along the curved first frame member, the armrest pad 12
Clings without rotating.

When removing, the engaging portion 12d of the armrest pad 12 is disengaged from the claw 14 and rotated in the direction opposite to the arrow A direction, and the holding portion 12c is pulled out from the tubular piece 10b. Also,
Since the armrest member and the first and second reinforcing frames are engaged with each other by screws, they can be easily removed.

Further, when the armrest is not attached, a decorative screw is attached to the female screw portion so that the ends of the first and second reinforcing frames are not exposed. With the armrest attached, the cover cap 16 is fitted so that one end of the tubular member is not exposed. The cover cap uses the same material as the armrest pad.

The operation of this embodiment configured as described above will be described.

Since the frame members 10 and 11 of the armrest member are round bars made of metal such as iron, they can be bent more easily and have higher rigidity than pipe materials often used as a chair structure. Further, since each member is fixed by welding, an engaging member such as a screw is not required, and the number of constituent parts can be minimized. Moreover, the engagement does not loosen after long-term use, and no maintenance is required. Further, since the frame structure of the backrest of the chair is used for mounting the armrest member, it is not necessary to newly provide a mounting member and the structure is simple. Further, the armrest also moves in accordance with the change in the backrest angle, and the positional relationship between the armrest and the elbow can be maintained well. Since the armrest pad 12 having the fitting portion with the armrest member is used, it is not necessary to use an engaging member such as a screw for mounting, and it is not necessary to particularly use a mounting tool.
Therefore, the armrest pad can be easily attached and detached.

Next, the structure of the chair using the second embodiment is shown in FIG. The frame member is curved in a U shape, the opening is arranged upward, both ends are horizontally bent, and the both ends are fixed by welding to form the base frame 17. The recesses 3 are provided on the front sides 17a, 17a of the base frame 17, and the side frames 18, 18 whose ends are welded to the recesses 3 are extended rearward. The side frame 18 is provided with a first bent portion 18b at a first steeply sloped portion 18a starting from the recess 3 and a gentle sloped portion 18c. The gently sloped portion 18c is extended rearward so that the second bent portion 18c
d is provided to form the second steep slope 18e. The second bent portion 18d and the upper rear side 17b of the base frame 17 are fixed to each other by welding. The steep slope portion 18e is provided with the concave portion 3,
It is installed by welding a reinforcing frame 19 between them.

The front and rear upper sides 17b of the base frame 17
The seat 8 is attached to the backrest 9, and the backrest 9 is attached to the second steep slope 18e of the side frame 18 and the reinforcing frame 19.
A portion formed by the second steeply inclined portion of the side frame 18 and the reinforcing frame is particularly referred to as a backrest frame structure.

Next, the structure of the armrest of the second chair will be described. The mounting member is different from that of the first embodiment. As shown in FIGS. 8 and 9, the mounting member 20 provided at the end of the second frame member 11 is a columnar member that is divided into two in the vertical direction. The second steep portion 18e of the chair is sandwiched between one piece 20a of the column member welded to the second frame member 11 and the other piece 20b of the column member, and the fixing screw B3
Fix 20a and 20b with. The mounting member 11b provided at the end of the first frame structure 10 is the same as that of the first embodiment. Further, the structure and mounting method of the armrest are the same as in the first embodiment.

According to the present embodiment, since the frame structure of the backrest of the chair is fixed by directly sandwiching it, the armrest member can be directly attached without providing an engaging portion in the frame structure of the backrest. . Other operations are the same as those in the first embodiment, and the description thereof will be omitted.

Besides, the armrest of the present invention can be applied to a chair having a structure as shown in FIGS. The chair according to the present embodiment has an independent base 21, a pillar 22, and a seat portion 8, and a caster 23 is provided on the base so that the chair can be moved while sitting. It is expandable and contractible and the height of the seat portion 8 can be adjusted. The backrest frame structure consists of two parallel side frames 24, 24.
In addition, the first reinforcing frame 25 and the second reinforcing frame 26 are installed between the side frames 24, 24. The frame structure of the backrest 9 can be reclined by an angle adjusting mechanism provided at an engaging portion between the support column 22 and the seat portion 8. Female threads are provided at the ends of the first and second reinforcing frames. The armrest member is the same as that used in the first embodiment. That is, as long as the backrest frame structure is exposed, even for a chair having any structure,
It becomes possible to carry out the present invention.

[0030]

As described above in detail, according to the armrest of the chair according to the present invention, the chair, the armrest member, and the armrest pad have a structure that can be easily attached and detached. , Can be assembled. Therefore, the manufacturing process is simplified. Moreover, by retrofitting the armrest, even if the purpose of use of the chair is different from the beginning, it is possible to deal with it freely, and by preparing armrests of various designs, a wide variety of products can be developed. Further, in the case of a person who prefers a hard armrest, it is possible to remove the armrest pad and directly use the frame.

Further, the armrest member is made by bending an iron round bar, and since each member is fixed by welding, it has high rigidity and excellent durability. The design can be freely set, and you can get an appearance that has never been seen before.

Since the armrest member is attached to the backrest,
The armrest also moves in accordance with the change in the backrest angle, and the positional relationship between the armrest and the elbow can always be maintained in a good condition. Therefore, the chair is comfortable to sit on and can be a chair that does not cause fatigue even after sitting for a long time.

Since the backrest frame structure is used for mounting the armrest member, it is not necessary to newly install a mounting member and the structure is simple, so that the number of manufacturing steps can be reduced and the cost of parts can be suppressed. Further, the present invention can be applied to a chair having any structure as long as the frame structure of the backrest is exposed.

By integrally forming the armrest pad with an elastically deformable material, the structure of the armrest pad is simplified and mass production is facilitated. In addition, the number of manufacturing steps is small, the cost is low, and the handling is easy. When disposing of the armrest pad, the number of parts constituting the armrest pad is one, which contributes to reduction of the amount of waste. Furthermore, since it is not necessary to use an engaging member such as a screw for attaching and detaching the armrest pad and it is not necessary to use a jig or the like, it is possible to simplify the assembly and replacement work, so that a low-priced chair can be provided. Can be provided.

Furthermore, since each member can be easily disassembled,
When disposing of chairs, it is possible to sort them by material and recycle or dispose of them, which is highly appealing to consumers as a product that addresses environmental issues. Further, in the case of damage, only the damaged parts can be replaced, which is economical and prolongs the life of the chair.

[Brief description of drawings]

FIG. 1 is a schematic view of a chair using an armrest according to a first embodiment of the present invention.

FIG. 2 is a plan view showing an armrest member of the first embodiment of the present invention.

FIG. 3 is a front view showing the armrest member of the first embodiment of the present invention.

FIG. 4 is a schematic view of an armrest pad of an armrest showing a first embodiment of the present invention.

FIG. 5 is a cross-sectional view taken along the line − in FIG.

6 is a cross-sectional view taken along the line − in FIG.

FIG. 7 is a schematic view showing a method for mounting the armrest of the chair showing the first embodiment of the present invention.

FIG. 8 is a schematic view of a chair using an armrest according to a second embodiment of the present invention.

FIG. 9 is a schematic view showing a mounting member for an armrest according to a second embodiment of the present invention.

FIG. 10 is a side view of a chair showing another embodiment.

FIG. 11 is a rear view of a chair showing another embodiment.

[Explanation of symbols]

 4 First reinforcing frame 4a End part 5 Second reinforcing frame 5a End part 9 Backrest 10 First frame member 10a Tip part 10b Mounting member (cylindrical piece) 11 Second frame member 11a Tip part 11b Mounting member (Cylindrical piece) 11c Horizontal part 12 Arm rest pad 12c Holding part 12d Fitting part 20 Mounting member

Claims (4)

[Claims] 1. A first frame member or a second frame member which is composed of a round bar made of metal such as iron having the same diameter and which is joined at its tip end portion. A horizontal portion is formed at the tip of the second frame member, and a mounting member for a chair is integrally attached to the rear ends of the first and second frame members, and the mounting member is attached to and detached from the chair frame in a vertical relationship. An armrest for a chair, wherein an armrest pad having a horizontal portion of the armrest member and a fitting portion between the attachment member and the armrest pad is detachably attached to the upper mounting member and the horizontal portion. 2. The mounting member is a tubular piece having a stepped portion in the middle portion of the inner tubular portion, and the engaging portion for a chair has a rod having a diameter that fits inside the inner tubular portion of the tubular piece. The armrest of the chair according to claim 1, wherein the armrest is a body. 3. The mounting member according to claim 1, wherein a part of the backrest frame structure can be held by a columnar member which is divided into two in the vertical direction. Chair armchair. 4. A first frame member extends along the first frame member
An armrest pad consisting of a main body portion provided with a groove portion into which the frame member is fitted, a holding portion having an inner diameter capable of sliding around the outer periphery of the tubular piece, and the horizontal portion and a detachable fitting portion,
The armrest for a chair according to claim 1, wherein the armrest is integrally formed of an elastically deformable material.