CN201328553Y

CN201328553Y - Chair back adjusting structure

Info

Publication number: CN201328553Y
Application number: CNU2008201800470U
Authority: CN
Inventors: 周国卿
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-11-26
Filing date: 2008-11-26
Publication date: 2009-10-21
Anticipated expiration: 2018-11-26

Abstract

The utility model relates to a chair back adjusting structure, which comprises a structure assembled at the rear of a butterfly seat of a chair for adjusting the angle of a chair back. The adjusting structure for a chair back is characterized in that in the chair back adjusting unit, an axle with teeth is inserted in an inner hole of a combined section of a body and a rotary back, an elastic component is sleeved on one side of the axle center, a cover body is fixed on the body by a screw fixing component, and a pressing piece is sleeved at the axle center near the outer side of the body. When inwardly pushing the pressing piece, the external teeth of the axle center can separate from the limitation of the internal teeth of the rotary back, and then the rotary back in a free state can be adjusted into an optional angle. When releasing the pressing piece and enabling the same to return, the elastic component sleeved on one side of the axle center can expand externally, thereby enabling the external teeth of the axle center to be limited by the inner teeth of the rotary back again, and then enabling the rotary back to be stable and located. Through convenient and fast actions, the utility model can complete adjustment of preset angle positions, enables users to completely lean against the chair back when sitting on the chair, and obtains comfortable effect meeting the requirement of ergonomic.

Description

The adjustment structure of the chair back

Technical field

The utility model relates to the adjustment structure of the chair back, is meant a kind of chair back that is assembled in seat especially, can reach the adjustment structure of the chair back of regulating according to the required angle of user by easy operation.

Background technology

The various function chair tools of industry exploitation at present are the required occasion of user of the different consumption stratas of cooperation and the utilization of approach, the capital meets the mechanism of ergonomics in seat cushion, backrest, the armrest unit setting of the chair tool of default form, makes the user can obtain the comfort level of presetting after being seated in the chair tool.

Adjustment with backrest, propose and obtain to check and approve " structural improvement of seat " novel case that disclosed TaiWan, China letters patent book number is M308020 before this creator, though this chair tool can reach default chair back angle adjustment action, but the distance of this chair back and user's Body contact is real to be limited, thereby can't obtain satisfied fully level of comfort.

Summary of the invention

At the problems referred to above, main purpose of the present utility model is to provide a kind of adjustment structure of the chair back, it can finish the adjusting in predetermined angle orientation by action easily, and then the user can be fitted fully with the chair back when being seated in this chair tool, to meet ergonomics and can obtain comfortable function.

For achieving the above object, technical scheme provided by the utility model is that a kind of adjustment structure of the chair back comprises that the butterfly seat rear that is assembled in seat supplies the chair back to make the structure of angular adjustment; It is characterized in that: the axle center that chair back adjustment unit will have a tooth portion is inserted between the endoporus of body and the section of linking of revolving the back of the body, again elastic parts is sheathed on described axle center one side, with the solid assembly of spiral shell lid is locked on the described body, is arranged with pressing piece at the place, axle center that faces by the described body outside; Described pressing piece is inwardly pushed away, and then the outer toothed portion in described axle center can break away from described restriction of revolving the internal tooth portion of the back of the body, makes the described back of the body that revolves be free state and can be adjusted to unspecified angle; After the described pressing piece of relieving resetted it, the elastic parts that is sheathed on described axle center one side can support outward, makes the outer toothed portion in described axle center be subjected to described restriction of revolving the internal tooth portion of the back of the body once more, made the described state that the back of the body is strong fix that revolves.

In the above-mentioned the technical solution of the utility model, described two places up and down of revolving the linking section of the back of the body are provided with respectively and are used for preventing the limiting section that angle adjustment is too small or excessive.

In the above-mentioned the technical solution of the utility model, described body below offers the slotted eye that is communicated with the hole, and the metal conjunction of sacrificial vessel screwed hole is inserted in, to increase the conjugation of its locking.

In the above-mentioned the technical solution of the utility model, the described pad that is sheathed with elastic material between the back of the body and the described body that revolves increases the adaptation between two members.

In the above-mentioned the technical solution of the utility model, the formed section of being embedded in both sides, described axle center is non-circular moulding.

Adopt technique scheme, the utility model can make the chair back can be adjusted to unspecified angle by easy operation, and can further regulate the angle of the moulding chair back, reach and allow the user when being seated in this chair tool, can be applying fully, obtain to meet the comfort of ergonomics with the chair back.

Description of drawings

Fig. 1 is the member exploded perspective view of the utility model chair back adjustment unit;

Fig. 2 is the schematic perspective view that the utility model chair back adjustment unit combines with the butterfly seat;

Fig. 3 is the left side schematic diagram of the utility model chair back adjustment unit;

Fig. 4 is the A-A generalized section of Fig. 3;

Fig. 5 is the action generalized section of the utility model chair back adjustment unit;

Fig. 6 is the left side schematic diagram that the utility model chair back adjustment unit combines with the chair back;

Fig. 7 is the action left side schematic diagram of the utility model chair back adjustment unit;

Fig. 7 A is the detail drawing of B among Fig. 7;

Fig. 7 B is the detail drawing of C among Fig. 7.

The specific embodiment

For describing structure of the present utility model, characteristics and effect in detail, existing following preferred embodiment of act and conjunction with figs. are described as follows.

The adjustment structure of the chair back provided by the utility model, as shown in Figure 1 and Figure 2, the chair back adjustment unit 2 that is assembled in seat butterfly seat 1 rear by body 21, revolve the back of the body 22, axle center 23, elastic parts 24, lid 25, pressing piece 26, the solid assembly 27,28 of spiral shell and constitute.

Body 2 sides 1, its bottom surface is flat, faces by rear one at body 21 to be formed with a breach space 211, and 211 212 other of blocking parts are offered endoporus 213 in the breach space again, and body 21 opposite sides then offer the hole 214,215 for solid assembly 27,28 lockings of spiral shell.

Revolve the back of the body 22, the one end is provided with the linking section 221 with concave ring groove 222, be equipped with sticking part 223 in linking section 221 both sides, and in being connected section 221, be provided with endoporus 224 with internal tooth portion 225, be respectively arranged with limiting section 226,227 being connected the position of section 221 about, offer pivoted hole 228 revolving the back of the body 22 other ends for the chair back 3 pivot joint combinations.

Axle center 23, one side are provided with and revolve the back of the body 22 internal tooth portions 224 corresponding outer toothed portion 231, and are formed with the section of being embedded 232,233 (needing non-circular moulding, is embodiment with the rectangle at this) of moulding respectively in both sides.

Lid 25, its profile according to body 21 is set up, and a side is formed with blocking part 251, and therebetween offers endoporus 252, faces by lid 25 outsides and offers porose 253,524.

Assembling of the present utility model is implemented as Fig. 1, shown in Figure 4, earlier axle center 23 is inserted in body 21 and carries on the back 224 of 23 endoporus with revolving, and elastic parts 24 is enclosed within axle center 23 1 sides, with the solid assembly 27,28 of spiral shell lid 25 is locked on body 21 again, at last put pressing piece 26, then the moulding chair back 3 is hubbed on 228 of the pivoted holes (as shown in Figure 6) that revolve the back of the body 22 at 23 places, axle center that face by body 21 outsides.

Operation such as Fig. 3, shown in Figure 5 with the utility model adjusting angle, the user inwardly pushes away pressing piece 26, then the outer toothed portion 231 in axle center 23 can break away from the restriction of the internal tooth portion 225 of revolving the back of the body 22, makes to revolve the back of the body 22 and be free state (as Fig. 5, shown in Figure 6) and be adjustable as unspecified angle.After the user decontroled pressing piece 26 it is resetted, the elastic parts 24 that is placed in axle center 23 1 sides can outer support, made the outer toothed portion 231 in axle center 23 be revolved the restriction of the internal tooth portion 225 of the back of the body 22 once more, made the state (as Fig. 4, shown in Figure 7) that the back of the body 22 is strong fix that revolves.The utility model is except that utilizing chair back adjustment unit 2 to carry out the angular adjustment, be hubbed at the moulding chair back 3 that revolves 228 of the back of the body 22 pivoted holes and also can make angular adjustment (as shown in Figure 7), reach and allow the user when being seated in this chair tool, can be applying fully, meet the comfort of ergonomics with the chair back 3.

Angle wide cut of revolving the back of the body 22 adjustment of the present utility model is subject to and is connected the section limiting section 226,227 that two places are provided with about in the of 221, its forward greatest limit be that limiting section 226 is resisted against top layer, body 21 front side face 216 (shown in Fig. 7 A), its backwards greatest limit be the wall 217 (shown in Fig. 7 B) that limiting section 227 is resisted against the breach space 211 of body 21, utilizing the design of limiting section 226,227 to prevent that angle adjustment is too small can't be seated in, and the excessive situation of causing danger of angle adjustment takes place.

In addition, as shown in Figure 1, the utility model also can be offered below body 21 in addition has the slotted eye 218 that is communicated with hole 214, and sacrificial vessel has the metal conjunction 29 of screwed hole 291 to be inserted in, to increase the conjugation of locking.

And, also can increase the adaptation between two members at the pad 20 that revolves fit elastic material between the back of the body 23 and the body 21, as shown in Figure 1, pad 20 can adopt elastic materials such as rubber, EVA, PVC to make.

Claims

1, a kind of adjustment structure of the chair back comprises that the butterfly seat rear that is assembled in seat supplies the chair back to make the structure of angular adjustment; It is characterized in that:

The axle center that chair back adjustment unit will have a tooth portion is inserted between the endoporus of body and the section of linking of revolving the back of the body, again elastic parts is sheathed on described axle center one side, with the solid assembly of spiral shell lid is locked on the described body, is arranged with pressing piece at the place, axle center that faces by the described body outside;

Described pressing piece is inwardly pushed away, and then the outer toothed portion in described axle center can break away from described restriction of revolving the internal tooth portion of the back of the body, makes the described back of the body that revolves be free state and can be adjusted to unspecified angle; After the described pressing piece of relieving resetted it, the elastic parts that is sheathed on described axle center one side can support outward, makes the outer toothed portion in described axle center be subjected to described restriction of revolving the internal tooth portion of the back of the body once more, made the described state that the back of the body is strong fix that revolves.

2, the adjustment structure of the chair back as claimed in claim 1 is characterized in that: described two places up and down of revolving the linking section of the back of the body are provided with respectively and are used for preventing the limiting section that angle adjustment is too small or excessive.

3, the adjustment structure of the chair back as claimed in claim 1 is characterized in that: described body below offers the slotted eye that is communicated with the hole, and the metal conjunction of sacrificial vessel screwed hole is inserted in, to increase the conjugation of its locking.

4, the adjustment structure of the chair back as claimed in claim 1 is characterized in that: the described pad that is sheathed with elastic material between the back of the body and the described body that revolves increases the adaptation between two members.

5, the adjustment structure of the chair back as claimed in claim 1 is characterized in that: the formed section of being embedded in both sides, described axle center is non-circular moulding.