JPH032205Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a support device for a seat body and a back body in a chair.

In other words, the sitting body and back body change in response to the body pressure and posture that correspond to dynamic changes due to the weight and body shape of each person who sits in a chair by lowering their hips to the sitting body and leaning their back against the body. When seated, it operates smoothly without making any noise, provides good cushioning, and can immediately return to its original position. This provides a good chair and a simple structure that can be suitably implemented.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a front view of the entire chair. A support base 5 is connected to the upper part of the vertically adjustable support leg C which has casters 4 at the lower part, and a frame for a hand rest is provided at the upper part of both sides of the support base 5. Both supporting frames D, D formed in the shape are installed in a parallel manner, and supporting tools E, E are interposed between the lower inner side of the supporting frames D, D and both side ends of the seat body A, respectively. At the same time, braces E and E are interposed between the rear inner sides of both support frames D and D and both ends of the back body B, so that the seat body A and the back body B are independently suspended. Configure.

The support E is made up of two long rectangular thin plates 2a, 2.
An elastic body 3 made of rubber is integrally sandwiched between the plates 2a and 2b, and the ends of two bolts 1a, 1a, 1b, and 1b are fixed to the outer surfaces of both plates 2a and 2b, respectively, with a certain distance between them. Both bolts 1a, 1 corresponding to the same
b are installed and constructed so as to extend on the same axis.

The two bolts 1a, 1a on one side are inserted into the frame part 6 at the side end of the seat body A from the lateral direction, with the support fixtures E, E on both sides of the seat body A being in the front and rear direction. The nuts 8 are screwed together and tightened from the inside of the portion 6, and both bolts 1b, 1 on the other side are tightened.
b is inserted laterally into the lower part of the support frames D, D, and screwed and tightened the nuts 8 from the outside of the support frames D, D to the tips thereof, respectively, and the seat body A is attached to both supporting frames E, E. It is configured to be attached to the support frames D, D via the support frames D, D.

In addition, with the two supports E and E on both sides of the back body B in the vertical direction, both bolts 1a and 1a on one side are inserted from the side into the frame 7 at the lateral end of the back body B and are attached to their tips. Screw and tighten the nuts 8 from inside the frame 7, and then tighten both bolts 1b on the other side,
1b is inserted laterally into the rear part of the support frames D, D, and screwed nuts 8 onto the tips of the support frames D, D from the outside to tighten them, and the back body B is attached to both support frames E, E. It is configured to be attached to the support frames D, D via the support frames D, D.

The elastic body 3 in the support E can be made of a plastic material having the same effect as a rubber material or a spring material, or it can be made of a plurality of sheets pasted together as in the embodiment shown in FIG. .

FIG. 14 shows another embodiment, in which the seat body A and the back body B
is integrated in a side L shape, and the supports E, E are interposed between the upper support frames D, D, which are integrated with the legs C, and the lower sides of the back body B, respectively. It is composed of

Therefore, while sitting on seat A, the user rests his or her back against back body B, but both ends of back body B and seat A are independently suspended by supports E and E of the above-mentioned structure. Therefore, when body pressure is applied to the entire surface of the back body B as shown by the arrow in Fig. 7, the entire back body B will be displaced backwards as shown by the imaginary line, and further as shown in Fig. 8 or 9. As shown in Figure 10, if body pressure is particularly applied to one side, the part in that direction will be displaced particularly large as shown by the imaginary line compared to the other side, and body pressure will be applied to the upper side as shown in Figure 10. This results in a particularly large displacement in the upper part, as shown by the imaginary line.

Furthermore, as shown in FIG. 10, when weight is applied to the entire sitting body A, the entire body is displaced significantly downward and backward as shown by the imaginary line.
As shown in FIG. 1 or FIG. 12, if a large amount of weight is applied to one side, the side on which the weight is applied is particularly large, as shown by the imaginary lines.

In another embodiment shown in FIG.
The body B and the back body B are integrated and change in the same manner as in the previous embodiment and as shown by the imaginary line in FIG. 15.

That is, depending on the person's weight, body shape, posture, and way of handling the load, the back body B and sitting body A will fit perfectly, allowing the user to sit freely without having to take an unreasonable posture, and with less fatigue. In addition, in the support E on one side, the two pieces are attached in a set without leaving much space between them, and are connected with at least two bolts 1a, 1a, 1b, 1b on both sides, so that the elastic body 3 Although it is exactly the same as the case described above, it is possible to firmly support the seat body A and the back body B so that it does not deform greatly, and to form a curved surface that most closely matches the body shape of a sitting person. It can also soften the impact, and since the part that is under body pressure is only displaced, it can operate smoothly without making any noise, and when the body pressure is no longer applied, it will not vibrate and will silently operate. It is possible to make a comeback.

In this way, the present invention independently suspends both ends of the seat body and the back body, which are separate or integral, on both side support frames that are integrated with the support leg side, respectively, with supporting tools interposed therein. A rubber material or a plastic material having the same effect as this is inserted between the two plate bodies, each of which is integral or separate, inserted into the seat and back body sides and the support frame side and fixed with at least two bolts. Because it is constructed by integrally sandwiching elastic bodies such as wood or spring material, all conventional tiltable chairs can maintain their backrest and seat in one fixed position when subjected to body weight or other gravity or loads. Unlike the previous model, which only rotated in the same way on the left and right around an axis, we have developed a seat and body that best suits the body pressure and posture by understanding the minute details of the dynamic changes in a person's weight and body shape. It forms a curved surface of the back, so the sitting body and back body fit the body according to the posture, so you can sit comfortably and freely lean your back without getting into an unreasonable posture. It is possible to absorb fatigue, support the seat and back body reasonably firmly, and soften the impact on the back body, and the part where body pressure is applied without the seat and back body changing as a whole. mainly changes, so it can be operated smoothly without making any noise, and when the body pressure is no longer applied, it can return silently without vibration, and it has a simple structure and is easy to manufacture. It has the advantage of being easy and convenient to implement.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a front view of the chair, Fig. 2 is a side view thereof, Fig. 3 is a plan view of a part thereof, and Fig. 4 is a side view of a part of the main part. , Fig. 5 is a front view of the main part in Fig. 1, Fig. 6 is a perspective view of the support, Figs. 7 to 9 are operation explanatory diagrams shown in plan views, and Fig. 10 is a side view. 11 and 12 are front views showing the operation, FIG. 13 is a perspective view of another embodiment of the support, and FIG. 14 is a perspective view of another embodiment of the chair. FIG. 15 is an operation explanatory diagram shown in a side view. A...sitting body, B...back body, C...supporting leg, D...
Support frame, E... Support tool, 1a, 1b... Bolt, 2a, 2b... Plate body, 3... Elastic body.

Claims (1)

[Scope of utility model registration request] Both ends of the seat body A and the back body B, which are separate or integrated, are mounted in an independent suspension manner on both side support frames D, D, which are formed integrally with supporting legs, using highly elastic supports E. The support equipment E
An elastic body 3 made of rubber, soft synthetic resin, etc. is integrally sandwiched between both long rectangular thin plates 2a and 2b, and two bolts 1a are installed on each side of the outer surfaces of both side plates 2a and 2b. , 1a, 1b, 1b are protruded, and one of the bolts 1a, 1a is attached horizontally to the frame 6 of the separate seat body or the integrated seat body and back body. The bolts 1b, 1b on the other side are inserted laterally into the support frames D, D, and their tips are inserted into the support frames D, D. A support device for a seat body and a back body in a chair, in which a nut 8 is screwed together and tightened from the outside, and the seat body and back body are elastically attached between left and right support frames.