CN201164243Y

CN201164243Y - Automatic rebounding office chair waist protection structure

Info

Publication number: CN201164243Y
Application number: CN 200720122492
Authority: CN
Inventors: 卢顺接
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-29
Filing date: 2007-08-29
Publication date: 2008-12-17
Anticipated expiration: 2017-08-29

Abstract

The utility model relates to an automatically rebounding office chair waist leaning structure, comprising a waist leaning body (1) and a chair back (2) for supporting the waist leaning body (1). An outer sleeve (10) is vertically protruded from the inner side of the waist leaning body (1), an inner sleeve (20) is protruded from the chair back (2), a shaft level (21) comprising a major diameter section (211) and a minor diameter section (212) is formed in the inner sleeve (20), and a cylinder (11) is formed and concave inwards the outer sleeve (10); the automatically rebounding office chair waist leaning structure also comprises a spiral spring (30) and a bolt (40), and the minor diameter section (212) penetrates in the cylinder (11), and is screwed in a bolt hole (213) by the bolt (40),; the upper end in the inner side of the waist leaning body (1) are contacted with the chair back (2) all along. Compared with the prior art, the waist leaning structure of the utility model can automatically rebound and change back and forth positions according to the sitting posture change of a user, gives an elastic support on the waist of the user, and gives the user very comfortable feelings.

Description

Automatically the office chair waist of resilience is by structure

Technical field

The utility model relates to the accessory of chair, and the waist that particularly relates to office chair is by structure.

Background technology

The office chair waist of prior art can not carry out front and back and regulate by generally being to be fixed on the chair back, is difficult to satisfy the requirement of the seat person of the different bodily forms to office chair comfort like this.For this reason, occurred can manual adjustments the office chair waist regulate by before and after realizing, satisfying different bodily form seat persons' needs; But the waist of this manual adjustments is not strong by servo-actuated, can not change front and back position with seat person's sitting posture, and, need save inconvenient operation with hand adjustment when changing seat person.In addition, this two classes waist all is a kind of rigid support by what provide to the human body waist, can not give the comfort of user's the best.

Utility model content the technical problems to be solved in the utility model be to avoid above-mentioned the deficiencies in the prior art part and the office chair waist that proposes a kind of automatic resilience by structure, this office chair waist can make office chair be fit to the seat person of the different bodily forms by structure, also needn't manual adjustments when changing seat person, very easy to use; The more important thing is that it can change and automatic resilience change front and back position with seat person's sitting posture, and gives a kind of resiliency supported for seat person's waist, gives impression as snug as a bug in a rug.

The utility model solve the technical problem can be by realizing by the following technical solutions:

The office chair waist of design, a kind of automatic resilience of use is by structure, comprise that waist leans on body and is used to support the chair back of installation waist by body, described waist vertically is protruding with outer sleeve by the body inboard, and correspondence also is protruding with inner sleeve on the chair back, and the external diameter of this inner sleeve equals the internal diameter of described outer sleeve; Form a cross section in the described inner sleeve and be the axostylus axostyle of accumbency " protruding " font, this axostylus axostyle comprises enlarged diameter section and reduced diameter section, leaves the gap between the periphery of described enlarged diameter section and the inwall of described inner sleeve; The cross section of described outer sleeve is accumbency " recessed " font, its inner face is the recessed cylinder that forms inwardly, the diameter of the external diameter of this cylinder and the enlarged diameter section of described axostylus axostyle is similar, and has circular hole at the end face of cylinder, and the diameter of the reduced diameter section of described axostylus axostyle equates with the aperture of described circular hole; Also comprise helical spring and screw, be provided with screw hole in the described axostylus axostyle, described outer sleeve entangles described inner sleeve, described helical spring is with described axostylus axostyle and cylinder entangles and prop up the inner face of described outer sleeve and inner sleeve respectively in two ends, and the reduced diameter section of described axostylus axostyle penetrates to the cylinder by described screw precession screw hole with locking from described circular hole again; Described waist leans on the upper end of body inboard to remain with the chair back and contacts.

Compare with prior art, the office chair waist of the automatic resilience of the utility model is by the structure technology effect: 1. can make office chair be fit to the seat person of the different bodily forms, also needn't manual adjustments during replacing seat person, and very easy to use; 2. automatic resilience changes front and back position to waist by changing with seat person's sitting posture, and gives a kind of resiliency supported for seat person's waist, gives impression as snug as a bug in a rug.

Description of drawings

Fig. 1 is the perspective exploded view of the office chair waist of the automatic resilience of the utility model by structure;

Fig. 2 to Fig. 4 is the sectional structure schematic diagram of the office chair waist of described automatic resilience when being in different conditions by structure, illustrates the springback process that waist leans on.

The specific embodiment

Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing.

The office chair waist of the automatic resilience of the utility model is by structure, as shown in Figures 1 to 4, comprise that waist leans on body 1 and is used to support the chair back 2 of installation waist by body 1, described waist vertically protrudes by body 1 inboard and is symmetrically arranged with two outer sleeves 10, correspondence also is protruding with two inner sleeves 20 on the chair back 2, the external diameter of this inner sleeve 20 equals the internal diameter of described outer sleeve 10; Form a cross section in the described inner sleeve 20 and be the axostylus axostyle 21 of accumbency " protruding " font, this axostylus axostyle 21 comprises enlarged diameter section 211 and reduced diameter section 212, leaves the gap between the inwall of the periphery of described enlarged diameter section 211 and described inner sleeve 20; The cross section of described outer sleeve 10 is accumbency " recessed " font, its inner face is the recessed cylinder 11 that forms inwardly, the diameter of the enlarged diameter section 211 of the external diameter of this cylinder and described axostylus axostyle 21 is similar, and the end face at cylinder 11 has circular hole 111, and the diameter of the reduced diameter section 212 of described axostylus axostyle 21 equates with the aperture of described circular hole 111; Also comprise helical spring 30 and screw 40, be provided with screw hole 213 in the described axostylus axostyle 21, described screw 40 is tapping screws, and described screw hole 213 is unthreaded holes; Described outer sleeve 10 entangles described inner sleeve 20, described helical spring 30 is with described axostylus axostyle 21 and cylinder 11 entangles and prop up the inner face of described outer sleeve 10 and inner sleeve 20 respectively in two ends, the reduced diameter section 212 of described axostylus axostyle 21 penetrates to the cylinder 11 by described screw 40 precession screw holes 213 with locking from described circular hole 111 again, and the ailhead diameter of described screw 40 equates with the internal diameter of described circular hole 111; Described waist leans on the upper end of body 1 inboard to remain with the chair back 2 and contacts.

Describe the principle process of the utility model office chair waist in detail below in conjunction with Fig. 2 to Fig. 4 by the automatic resilience of structure.

At first as shown in Figure 2, seat person not backward by and not to the chair back 2 applied thrusts, this moment, helical spring 30 was in stretched condition, and the head of screw of screw 40 just blocks the tube feather edge of the inner cylinder 11 of described outer sleeve 10, and waist contacts with the chair back 2 by the upper end of body 1 inboard.Lean on behind the seat person the chair back 2 being applied pushing force (with reference to Fig. 3), because waist contacts with the chair back 2 by the upper end of body 1 inboard, so waist can produce a propulsive thrust to the chair back 2 by body 1, under both interactions, the chair back 2 slowly is adjacent to by body 1 with waist, inner sleeve 20 on the chair back 2 to waist by the outer sleeve 10 on the body 1 in shift-in, helical spring 30 is compressed, the reduced diameter section 212 of described axostylus axostyle 21 moves in described cylinder 11 simultaneously, during to position shown in Figure 4, waist is adjacent to fully by the body 1 and the chair back 2, helical spring 30 is fully compressed, thereby gives comfortable elastic sensation for seat person's back, and, two inner sleeves, 20 positions on the chair back 2 are aimed at the waist of human body respectively near the position, both sides, give a kind of resiliency supported of feeling good of people.When seat person egress of chair, pushing force disappears, and under the elastic force effect of helical spring 30, the chair back 2 automatic resiliences are back to state shown in Figure 2.

Claims

1. the office chair waist of an automatic resilience comprises that by structure waist leans on body (1) and is used for supporting the chair back (2) of installation waist by body (1), is characterized in that:

Described waist vertically is protruding with outer sleeve (10) by body (1) inboard, and correspondence also is protruding with inner sleeve (20) on the chair back (2), and the external diameter of this inner sleeve (20) equals the internal diameter of described outer sleeve (10);

Form a cross section in the described inner sleeve (20) and be the axostylus axostyle (21) of accumbency " protruding " font, this axostylus axostyle (21) comprises enlarged diameter section (211) and reduced diameter section (212), leaves the gap between the inwall of the periphery of described enlarged diameter section (211) and described inner sleeve (20);

The cross section of described outer sleeve (10) is accumbency " recessed " font, its inner face is the recessed cylinder (11) that forms inwardly, the diameter of the enlarged diameter section (211) of the external diameter of this cylinder and described axostylus axostyle (21) is similar, and the end face at cylinder (11) has circular hole (111), and the diameter of the reduced diameter section (212) of described axostylus axostyle (21) equates with the aperture of described circular hole (111);

Also comprise helical spring (30) and screw (40), be provided with screw hole (213) in the described axostylus axostyle (21), described outer sleeve (10) entangles described inner sleeve (20), described helical spring (30) is with described axostylus axostyle (21) and cylinder (11) entangles and prop up the inner face of described outer sleeve (10) and inner sleeve (20) respectively in two ends, and the reduced diameter section (212) of described axostylus axostyle (21) penetrates to the cylinder (11) by described screw (40) precession screw hole (213) with locking from described circular hole (111) again;

Described waist remains with the chair back (2) by the inboard upper end of body (1) and contacts.

2. the office chair waist of automatic resilience as claimed in claim 1 is by structure, and it is characterized in that: the ailhead diameter of described screw (40) equates with the internal diameter of described circular hole (111).

3. the office chair waist of automatic resilience as claimed in claim 2 is by structure, and it is characterized in that: described screw (40) is a tapping screw, and described screw hole (213) is a unthreaded hole.

As the office chair waist of each described automatic resilience of claim 1 to 3 by structure, it is characterized in that: described outer sleeve (10) and inner sleeve (20) have two, are symmetrically distributed.