JPS5934365Y2 - Mounting and supporting device for the back of a chair, etc. - Google Patents

Description

[Detailed explanation of the idea] TECHNICAL FIELD The present invention relates to an attachment support device for the back body of a chair, etc.

In other words, the back body can respond to the body pressure and posture that vary depending on the weight and body shape of each person sitting on the chair, and can be well supported by the elastic body to provide cushioning. This creates a comfortable chair that fits well and is comfortable for people who sit in a variety of ways.
Furthermore, it is possible to create a compact structure in which only the elastic body portion is exposed between the side of the back body, etc. and the support frame, making assembly extremely easy and providing a robust assembly structure. It is intended to be provided so that it can be carried out in a suitable manner.

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

FIG. 1 shows a perspective view of the chair, in which a horizontal support frame C with a square cross section and a vertical support frame C are connected above both support legs C' that stand up on both sides. The supporting frames C on both sides are framed horizontally.
A seat body B is installed between the support frames C9C and a back body A is installed between the support frames C9C on both vertical sides. Large holes 8a, 8a are formed into which the nut 4 can be inserted from the outside, and small holes 8b, 8b, into which the end surface of the nut 4 engages, are formed on the inner side corresponding to the large hole 8a, respectively, to provide support. The upper and lower nuts 4, which are long enough to be fully fitted into the frame C, are each formed with a recess 9 on one end surface in which a tool engages, and a tapped hole 10 on the other side.

Attachment plates 3 made of thin long plates are attached to the side surfaces along the inner side of the outer skin 11 on both sides of the back body A, and the outer skin 11 is opened to the outside at both ends of the attachment plate 3. Both holes 1, 1 are formed, and an outer skin 11 is provided in the middle of the mounting plate 3.
A center hole 12 is formed through the center hole 12 and opens outward, and a fixing nut 2 is attached to the inner side of the center hole 12 by welding.

D is made of an elastic material such as a rubber material or a soft plastic material, and is made to have a constant thickness and is elongated to be substantially the same as the length of the mounting plate 3. On both sides of the elastic body, both plates 13a,
13 b are bonded by baking, and upper and lower pins 5 that can be fitted into both holes 1 of the mounting plate 3 are integrally provided protruding from both ends of one plate 13 a, and the pins 5 of the other plate 13 b are integrally provided. Upper and lower bolts 7.7 that can be screwed into the nuts 4, 4 are integrally provided from both ends, and a hole 1 corresponding to the large hole 14 on the plate 13b is provided in the middle of the elastic body.
5, and a small hole 16 is formed in the portion of the plate 13a facing the hole 15.

Further, 6 is a bolt, and the head 6a of the bolt 6 that can be inserted into the small hole 16 is installed so that it can be locked in the axial direction within the hole 15, and the end surface of the head 6a is provided with a tool. It is configured by forming a recess 17 that can be engaged with.

Then, the pins 5 are inserted into both holes 1 that form the side surfaces of the back body A at the top and bottom of the side surfaces of the elastic body, and then the bolts 6 are inserted into the holes 15 of the elastic body and are passed through the center hole 12 and fixed into the fixing nut. 2, engage the tool from the outside in the recess 17, rotate the bolt 6 and screw it into the fixing nut 2, and tighten until the head 6a of the bolt 6 reaches the end of the hole 15. Then, an elastic body can be attached to the side of the back body A.

Next, insert the upper and lower bolts 7.7 on the elastic body side into the double-sided holes 8b and 8b of the support frame C, respectively, and insert them into the large holes 8a.
, 10.10 of the tapped holes for the nuts 4, 4 that fit from the 8a side.
are aligned with the bolts 7.7, engage the tool in the recess 9, rotate the nuts 4, 4, and screw them together, then the upper and lower nuts 4,
4 can be fully inserted into the support frame C to assemble and connect the elastic body and the support frame C.

When assembled in this way, as shown in FIGS. 2 and 3, the elastic body is only exposed between the back body A and the support frame C, and the back body A The left and right sides are similarly attached to the left and right support frames C2C and assembled.

Note that both sides of the seat body B can also be assembled in the same way via elastic bodies.

Therefore, since both sides of the back body A are supported by directly connected elastic bodies, it is possible to adjust the body pressure and posture according to the dynamic changes due to the weight and body shape of the person leaning back on the back body A. It can also be changed to accommodate various conditions, and can also provide cushioning support.

In this way, the present invention is equipped with a mounting plate having both holes near both ends on the back body and the seat body, or one side thereof, and a fixing nut in the middle, and an external mounting plate on the support frame on the supporting leg side. Upper and lower nuts that can be operated from one side and locked in the axial direction are fitted, and two nuts that can be inserted into both holes of the mounting plate are fitted on one side of an elastic body such as a rubber material or soft plastic material having a certain thickness. A pin is integrated and protruded, and a bolt is protruded from the center that can be operated from the outside, locked in the axial direction, and screwed into the fixing nut, and the other side of the elastic body is provided with a bolt that can be screwed into the upper and lower nuts. Since the upper and lower bolts that can be screwed into the chair are integrated and protruded, the back body can be changed in various ways depending on the person sitting on the chair, and it can be well supported by the elastic body to provide cushioning. The chair fits well and is comfortable for people sitting in various sitting positions, and can have a compact structure with only the elastic body exposed between the back side and the support frame. It is extremely easy to assemble by simply attaching one side of the elastic body by inserting a pin and threading a bolt, and then connecting the other side of the elastic body to the support frame by tightening bolts and nuts. Moreover, by connecting one side of the elastic body with two pins and one bolt, and the other side with two bolts, a robust assembly structure can be achieved and it has the advantage of being suitable for implementation.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view of the chair;
Figure 2 is a front view of a part of it, Figure 3 is a sectional view of Figure 2,
4 is an exploded view of FIG. 3, and FIG. 5 is a perspective view of a portion of FIG. 4. A...back body, B...sitting body, 1...
... Hole, 2 ... Fixing nut, 3 ... Mounting plate, C' ... Support leg, C ... Support frame, 4 ... ...Nut, D...Elastic body, 5...Pin, 6...Bolt, 7...
····bolt.

Claims (1)

[Scope of utility model registration request] One plate H3b has bolts 7.7 fixed and protruding from the top and bottom and a hole 14 provided in the center, and the other plate 13a.
A hole 16 with a smaller diameter than the hole 14 on the plate 13b side is provided in the center with pins 5, 5 protruding from the top and bottom, and a rubber material or soft material having a through hole 15 in the center is provided between the plates 13b and 13a. An elastic body made of plastic is interposed, the plate 13a, the elastic body D, and the plate H3b are integrated to form an interposition body, and the thus formed interposition body is interposed between the chair support frame and the back body or the seat body. In a chair that can be used horizontally, the plate 13a of the intervening body is inserted into the holes 1, 1 in the plate 3 formed on the outer surface side of the seat internal support frame 1 of the back body A or the seat body to which it is attached. The protruding pins 5, 5 are inserted into the central through hole 1 of the intervening body.
5 from the hole 14 toward the hole 16, and the head 6a of the bolt 6 protruding from the hole 16 is inserted into the nut 2 through the center hole 12 on the back body side, and the interposed body is screwed by rotation of the bolt 6. - For the force support frame C, the upper and lower bolts 7. are provided protruding from the play HBb side in the intervening body with respect to the nuts 4, 4 fitted in the upper and lower holes 8.8 of the support frame.
A mounting support device for a back body of a chair, etc., characterized in that the device is configured such that the device 7 is inserted into the device and screwed together by the rotation of the nuts 4, 4.