JPS5816706Y2 - Chair - Google Patents

Description

[Detailed description of the invention] The present invention relates to a chair equipped with armrests, and more specifically, the back body can be swung upright at a desired angle with respect to the seat body, and the back body can be latched. This relates to a chair whose armrests rise and fall as the chair moves.

Conventionally, in order to improve sitting comfort in chairs with armrests of this type, the seat body and back body are formed from a U-shaped frame, and this frame is covered with a cushioning material, and this cushioning material is made of fabric. Further, in order to connect the armrest to the seat body and the back body, a threaded portion is formed on an arm rod to which the arm rest is attached and a support rod extending from the arm rod. The armrests were attached to the seat and back bodies by inserting the arm rods and support rods into through holes formed in each frame of the seat body and back body, and then screwing bolts into the threaded portions. It is something.

By the way, in a chair with such a structure, after the frame is covered with a cushion material and the cushion material is wrapped with fabric, the frame is covered with the cushion material and the fabric. Even if it is not possible to connect the armrest to the frame, and even if the frame is covered with cushioning material and fabric after the armrest is connected to the frame, the connection between the arm and support rods and the frame is The fabric cannot be sewn into a bag shape in advance because of the obstruction, and the fabric must be sewn to fit the seat body and back body each time the chair is assembled.

For this reason, in conventional chairs with the above-mentioned structure, the process of covering the cloth with the above-mentioned fabric is labor-intensive and increases the manufacturing cost.Atsumaru's invention was devised to solve this problem. To provide a chair in which an armrest can be easily pivotally connected to the frame even after the frame is covered with a cushion material and the cushion material is wrapped with fabric.

The configuration of the present invention will be explained below according to embodiments shown in the drawings.

The one shown in the figure is a general seat chair, and the seat body denoted by numeral 1 and the back body denoted by numeral 2 are each cushioned on a frame 3°3 formed by bending pipe material into a U-shape. The cushioning material 4 is covered with a fabric 5 sewn into a bag shape in advance, and an existing reclining mechanism 6.6 is interposed between the roadside portions of both frames 393. By pivotally connecting the back body 2 to the seat body 1, the seat body 1 and the back body 2 are connected to the reclining mechanism 6.
, 6 is configured to be able to swing around pivots 6a, 6a.

Further, a through hole 3ae3a is formed in the middle of the opposing circumferential sides of both frames 3.3 in the same direction as the pivot shafts 6a, 6a.

Reference numeral 1 denotes a reinforcing member having a U-shaped cross section, with both ends narrowed to fit the outer diameter of the frame 3.3 and the middle part having a large diameter. Diameter hole 7
A and a small diameter hole 7b are formed in the frame plate 8, and a through hole 8a and a groove 8b are formed on the outer surface of the side wall in which the small diameter hole 1b is formed. Hole 8
It is fixed by spot welding so that it communicates with a.

Reference numeral 9 denotes a stopper made of elastic steel, and as shown in FIG. 4, the outer diameter of the stopper 9 is slightly smaller than the diameter of the groove 8b, and a through hole is provided in the center. 9a is installed through the
A plurality of cuts g extending radially from the through hole 9a.
b, gb, .

Then, the stopper 9 is inserted into the groove 8b of the frame plate 8 so that the obliquely protruding notch faces the through hole 8a of the frame plate 8, and it is free to rotate within the groove 8b. It has become.

The reinforcing member 7 into which the stopper 9 is rotatably inserted is formed so that the stopper 9 is located on the inner surface of both opposing sides of the frame 3.3, and is formed on the frame 3.3. Both the frames 3.3 are connected so that the through hole 3a is in communication with the large diameter hole 7a and the small diameter hole 1b of the reinforcing member 7.
are fitted and fixed on both sides of the

10.10 is a support rod in which the arm rods 11, 11 formed with the stoppers 10a, 10a formed on both sides are pivoted freely to the free end side stopper 10B of the arm rod 10°10. ,
The proximal ends of these arm rods 10, 10 and support rods 11, 11 are bent at right angles, and the stopper 9 is attached to the bent ends.
The diameter of the through hole 9a is slightly smaller than that of the arm rod 10.
Or the supporting rod 11 also has small diameter connecting parts 10b, 10b.
and 11b, 11b are integrally formed.

In the figure, 12 is an armrest attached to the stoppers 10a, 10a of the arm rod 10, and 5a is a through hole formed in the fabric 5, which is connected to both the frames 3, 3.
It is formed at a position corresponding to the through hole 3ae3b.

In the chair constructed as described above, the arm rods 10.10 are attached to the back body 2, and the support rods 11.11 are attached to the seat body 1. The installation method will be explained as an example.

That is, as shown in FIG. 3, the connecting portion 10b of the arm rod 10 is inserted into the through hole 5a of the fabric, and the frame is inserted through the large diameter hole 7a of the reinforcing member 7 fixed to the frame 3 of the back body 2. The connecting portion 1ob is inserted into the small diameter hole 7b of the reinforcing member 7 through the through hole 3as3b, and the tip of the connecting portion 1ob is tapped into the through hole 9a of the stopper 9, thereby cutting the through hole 9a and forming the holes 9a, 9b. The connecting portion 10b is connected and fixed to the stopper body 9 while being expanded along the .

Also, as a result, the arm rod 10 is supported at four locations, the large diameter hole 7a, the small diameter hole 7b, and the through holes 3a and 3b, with little play.

The arm rods 10, 10 and the support rods 11 *" 11 attached to the back body 2 and the seat body 1 as described above are arranged such that the stop body 9 is rotatably inserted into the groove 8b of the frame plate 8. Since they are inserted, as the back body 2 swings relative to the seat body 1, the arm rods 1G, 10 and the support rods 11.11 also swing, and the armrests attached to the arm rods 1α, 10 also swing. 12 rises and falls.

As explained above, the chair of the present invention is provided with a stop body having a through hole and a notch extending radially from the through hole, and reinforcing members at opposing positions of each frame constituting the seat body and back body. are fitted and fixed, and a large diameter hole and a small diameter hole are formed in opposing side walls of the reinforcing member, and □
The stopper is rotatably attached to the corresponding inner surface of the reinforcing member, and the support rod and arm rod are inserted through the large diameter hole into the small diameter hole through a through hole formed in the frame. The support rod and the arm rod are supported by the above-mentioned companies, and the proximal ends of the support rod and the arm rod are inserted and locked into the through holes of the stopper body. The supporting rods and arm rods are supported by the frame with little play and are able to swing freely. Even if the seat body and back body are covered with cushioning material and fabric in advance, the base ends of the two rods are This is because the supporting rod and the arm rod can be pivotally connected to the frame very easily by simply placing the part into the through hole of the stopper body and tapping it.

The chair can be assembled extremely easily and reliably, and the overall cost can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a partially cutaway side view, FIG. 2 is a partially cutaway plan view, FIG. 3 is a partially enlarged sectional view, and FIG. 4 is a partially cutaway side view. FIG. 5 is a plan view of the frame plate. 1... Sitting body, 2... Back body, 3...
...Cushion material, 4...Fabric, 5...
・Reclining mechanism, 6... Reinforcement member, 9.
...Stopping body, 9a...Through hole, 9b...
...Cut depth, 10...Arm rod, 11...
...Support rod, 12...Armrest.

Claims (1)

[Scope of utility model registration request] The seat body and the back body are constituted by a frame, and the back body is pivotably connected to the seat body, and a free end of a support rod extending from the seat body and an arm rod extending from the back body are provided. Connect the free ends to each other, and attach the armrests to the armrests of and.
, the armrest is configured to rise and fall as the back body swings with respect to the seat body, the armrest is provided with a through hole and a stop body having a notch extending radially from the through hole is formed; Reinforcing members are fitted and fixed at opposing positions of each frame constituting the seat body and the back body, and large diameter holes are formed in opposing side walls of the reinforcing members, and large diameter holes are formed in the opposing side walls of the reinforcing members, and The support rod and arm rod are attached to the inner surface so as to be freely rotatable, and the support rod and arm rod are inserted from the large diameter hole into the small diameter hole through a through hole formed in the frame. , and the proximal end portions of the support rod and the arm rod are inserted and locked into the through holes of the stop body.