JPH08117058A - Armrest for chair - Google Patents

Abstract

PURPOSE: To provide an armrest for a chair which enables the replacing thereof easily with a fixed type arm rest or a rotary type arm rest as desired even in a backrest of the same specifications. CONSTITUTION: An armrest is made up of an armrest plate 2, a support plate 3 and a link member 5 for rotation. The arm rest plate 2 has a hole 25 for rotation and a stopper 26 and the link member 5 for rotation has a rotation support part to be fitted into the hole 25 for rotation and a link screw insertion hole 54 piercing a link shaft part 53 at the center part thereof. The support plate 3 has a link hole 31 linked to the link shaft part 53, a mounting hole 32, a front stopper face 33 which the stopper 26 contacts when the armrest plate 2 is almost horizontal and an upper stopper face 34 which the stopper 26 contacts when the armrest plate 2 turns upward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an armrest attached to a backrest side portion of a chair.

[0002]

2. Description of the Related Art Conventionally, there have been provided a fixed armrest and a rotatable armrest which is rotated upward when the armrest is no longer needed. And since they have a different basic structure, the backrest part is constructed in a structure corresponding to the armrest to be attached, and each armrest and backrest are selected and shipped at the manufacturing stage. . That is, it is easy to replace the armrests at the manufacturing stage, but it is not easy to replace the armrests at the site of use because the backrest also needs to be replaced.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a fixed armrest or a rotatable armrest can be easily replaced as desired even if the backrest structure has the same specifications. The task is to provide armchairs for the chair.

[0004]

In order to solve the above problems, the present invention is characterized in that an armrest plate, a support plate located on the inner surface of the armrest plate via a spring member, a support plate and an armrest plate are provided. The armrest plate has a vertical support surface that is larger in the vertical direction than the tip of the armrest plate.The armrest plate has a vertical support surface above the vertical support surface for rotation. A hole is formed, and a stopper projecting toward the support plate is formed in front of the turning hole by a predetermined size, and the turning connecting member is located on the outer surface of the vertical support surface, and has a head having a diameter larger than that of the turning hole, and a turning member. A rotation support part that fits into the hole, a connection shaft part that has a smaller diameter than the rotation support part and that is connected to the upper part of the support plate via a spring member, and a connection screw insertion hole that penetrates the center part,
The support plate has a connection hole at the upper end, which is connected to the connection shaft portion,
A mounting hole into which a connecting screw is inserted is formed in a lower end portion projecting below the base portion of the vertical support surface, and the stopper contacts the upper front end surface in a state where the mounting hole is connected to the armrest plate in a substantially horizontal state. Has a front stopper surface and an upper stopper surface with which the stopper comes into contact with the upper end surface in a state of being rotated upward.

[0005]

According to the features of the present invention, the armrest is an armrest plate,
A support plate located on the inner surface of the armrest plate via a spring member,
Since the support plate and the armrest plate are rotatably connected to each other, the structure for rotation is on the armrest side, and the armchair for rotation is attached to the backrest side of the chair. A fixed armrest that does not require any new processing,
Alternatively, a backrest with the same specifications can be used even with a rotating armrest. Further, by forming a stopper on the armrest plate and providing a stopper surface on the support plate, connecting the armrest plate and the support plate with the rotation connecting member, and forming a connecting screw insertion hole penetrating the center of the rotation connecting member. , It is possible to use the same connecting screw as the fixed armrest mounting.

[0006]

Embodiments Embodiments will be described below with reference to the drawings.
In FIG. 1, reference numeral 10 indicates an armrest of the present invention, reference numeral 2 indicates an armrest plate, reference numeral 3 indicates a support plate, and reference numeral 5 indicates a connecting member for rotation.

The armrest plate 2 is fitted into a mounting recess 201 formed on the back surface of the armrest member 20 and is connected to the armrest member 20 by screws 21 ... And a horizontal support surface 22 and the inside of the horizontal support surface 22. The end portion is bent downward so that the front end side is tapered, and the backrest 100 side is formed by a vertical support surface 24 having a base portion 23 formed vertically larger than the front end portion.

A turning hole 25 is formed in the upper portion of the base portion 23 of the vertical support surface 24 to which the turning connecting member 5 is attached, and a stopper 26 projecting toward the support plate 3 side forward by a predetermined dimension from the turning hole 25. Are formed. Reference numeral 27 ...
Indicates a hole for connecting the armrest member 20 with screws 21 ...

The rotation connecting member 5 is located on the outer surface of the vertical support surface 24 and has a head portion 51 having a diameter larger than that of the rotation hole 25, a rotation support portion 52 fitted in the rotation hole 25, and a rotation support portion. The connecting shaft portion 53 has a smaller diameter than 52 and is connected to the upper portion of the support plate 3 via the spring member 4, and a connecting screw insertion hole 54 that penetrates the central portion of the rotating connecting member 5.

The support plate 3 is formed at an upper end portion thereof with a connecting hole 31 screwed into the connecting shaft portion 53 of the rotating connecting member 5 and a lower end portion of the vertical support surface 24 protruding below the base portion 23. The mounting hole 32 of the connecting screw 6 and the front stopper surface 33 with which the stopper 26 abuts when the armrest plate 2 is coupled in a substantially horizontal state, and the stopper 26 abut when the armrest plate 2 rotates upward. It has an upper stopper surface 34.

The present invention is constructed as described above, and the spring connecting member 5 is interposed between the base portion 23 of the armrest plate 2 with the armrest member 20 attached and the upper end portion of the support plate 3 so as to interpose the spring connecting member 5. The connecting shaft portion 53 is screwed into the connecting hole 31 of the support plate 3 from the turning hole 25.

Then, the rotation supporting portion 5 of the rotation connecting member 5
2 is fitted in the rotation hole 25, the spring member 4 is compressed and pressed against the vertical support surface 24 and the support plate 3, and the armrest plate 2 is rotatable upward with respect to the support plate 3 only by a predetermined force or more. In a substantially horizontal state, the stopper 26 contacts the front stopper surface 33 of the support plate 3 to prevent downward rotation. Further, when the stopper 26 is rotated upward, the stopper 26 comes into contact with the upper stopper surface 34, and further rotation is blocked. On the other hand, after connecting the armrest plate 2 and the support plate 3, if the rotation connecting member 5 is prevented from rotating by caulking the connection shaft portion 53, the connection state between the armrest plate 2 and the support plate 3 is permanent. Maintained.

In this state, the connection screw 6 is inserted into the connection screw insertion hole 54 of the rotation connection member 5 and the insertion hole 32 of the support plate 3, and the armrest mounting portion 1 provided inside the backrest 100.
Connect to 01.

That is, the rotatable armrest 10 has two
Since it is connected to the backrest 100 with the connecting screw 6 of the book, the fixed armrest is correspondingly formed by integrally forming the armrest plate 2 and the support plate 3 by welding or the like. Even if the lean 100 has the same specifications, the armrest 10 can be replaced by the connecting screw 6 at any time.

[0015]

According to the present invention, the armrest is an armrest plate,
A support plate located on the inner surface of the armrest plate via a spring member,
Since the support plate and the armrest plate are rotatably connected to each other, the structure for rotation is on the armrest side, and the armchair for rotation is attached to the backrest side of the chair. A fixed armrest that does not require any new processing,
Or, even if it is a rotating armrest, a common backrest can be used, so a large number of backrests having the same specifications can be manufactured, so that the chair as a whole becomes inexpensive. Moreover, since the backrest has the same specifications, member management becomes easy and shipping mistakes can be prevented. Further, a stopper is formed on the armrest plate, a stopper surface is provided on the support plate, the armrest plate and the support plate are connected by a rotation connecting member, and a connecting screw insertion hole penetrating the center of the rotation connecting member is formed. Since it is configured to be connected to the backrest with two connecting screws, it is easy to attach a fixed armrest in the same manner, and a common connecting screw can be used, and parts management is very easy. Further, the rotation connecting member is located on the outer surface of the vertical support surface and has a head having a diameter larger than that of the rotation hole, a rotation support portion fitted into the rotation hole, and a diameter smaller than the rotation support portion and an upper portion of the support plate. Since it is composed of a connecting shaft part connected via a spring member and a connecting screw insertion hole penetrating to the center part, by simply connecting the supporting plate and the armrest supporting plate with the rotating connecting member, Since the armrest support plate is rotatable and an insertion hole for attaching to the backrest is formed at the same time, the armrest can be assembled very easily.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of essential parts of the present invention.

FIG. 2 is a side view of an essential part of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG.

[Explanation of symbols]

 10 Armrest 100 Backrest 2 Armrest Plate 23 Base 24 Vertical Support Surface 25 Rotation Hole 26 Stopper 3 Support Plate 31 Connection Hole 32 Mounting Hole 33 Front Stopper Surface 34 Upper Stopper Surface 4 Spring Member 5 Rotation Connection Member 51 Head 52 Times Dynamic support 53 Connection shaft 54 Connection screw insertion hole 6 Connection screw

Claims (1)

[Claims] 1. An armrest plate, a support plate located on the inner surface of the armrest plate via a spring member, and a pivoting connecting member for rotatably coupling the support plate and the armrest plate. The armrest plate is a backrest. Has a vertical support surface that is formed to be larger in the up-down direction than the tip end portion, a rotation hole is formed in the upper portion of the vertical support surface on the base side, and projects toward the support plate side by a predetermined size in front of the rotation hole. A stopper is formed, and the rotation connecting member is located on the outer surface of the vertical support surface and has a head with a diameter larger than that of the rotation hole, a rotation support portion that fits into the rotation hole, and a diameter smaller than the rotation support portion. A connecting shaft portion connected to the upper part of the plate via a spring member,
The support plate has a connection screw insertion hole penetrating through the center part, and the support plate has a connection hole connected to the connection shaft part at an upper end and a connection screw inserted into a lower end projecting below the base of the vertical support surface. A front stopper, in which a hole is formed and is connected to the armrest plate in a substantially horizontal state, the stopper contacts the upper front end surface, and the armrest plate rotates upward, the stopper contacts the upper end surface. Armrest of a chair characterized by having a face and an upper stopper face.