CN2218482Y

CN2218482Y - Back tilting and rocking structure of chair

Info

Publication number: CN2218482Y
Application number: CN 94221819
Authority: CN
Inventors: 刘琪男
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-10
Filing date: 1994-09-10
Publication date: 1996-01-31
Anticipated expiration: 2004-09-10

Abstract

The utility model relates to a back tilting and rocking structure of chair, comprising a back of chair, a seat of chair, supporting arms, a connecting seat, a balancing seat, a connecting rod and leg seats, wherein, two ends of the supporting arms which can be deformed elastically are equipped with pivot holes for being pivoted to the back of chair and the seat of chair; one end of the balancing seat is equipped with a piece shape body, and the other end of the balancing seat is equipped with a shaft rod, and two ends of the shaft rod are respectively accommodated with a rocking rod; the connecting rod is in L shape, and one end of the connecting rod is fixed to the back of chair, and the other end of the connecting rod is fixedly connected with the connecting piece of the connecting seat; the supporting arms, the connecting rod, the connecting seat and the balancing seat are driven to move in order to cause the back of chair to have better balance and tilting degree to the seat of chair when the back of chair is tilted backwards.

Description

The chair back of seat tilts to wave structure

The utility model relates to a kind of seat, is specifically related to a kind of chair back that makes and can cooperates the swing of support arm independence and freedom to tilt to wave structure so that the better chair back more convenient and safe, seat to be provided.

In the modern society of stressing exquisite life, the design of modern seat except external form has aesthetic feeling, the fundamental that the modern especially seat of the comfortableness of seat itself, security need possess.Fig. 4 illustrates a kind of common seat than the tool comfortableness at present, and its structure mainly comprises the chair back 81, seat support 82, Connection Block 83, a runners 84, wherein:

The bottom of the chair back 81 of this seat and the afterbody of seat support 82 fuse, and seat support 82 links together by Connection Block 83 with runners 84;

As shown in Figure 5, this Connection Block 83 mainly comprises two connectors 831, framework 832,833, adjusting lever of swing seat 834, loop bar 835, an axostylus axostyle 836 and is contained in spring in the loop bar 835, wherein connector 831 is provided with conjugate foramen 8311 on end face, and connector 831 can be fixed on the bottom of seat support 82 with tightening member; Be connected with a framework 832 two connector 831 center fixed, in this framework 832, engage a swing seat 833 by loop bar 835 and axostylus axostyle 836, this loop bar 835 is fixed a torque spring with hex bolts on the end and is made it to be contained in the loop bar 835, and swing seat 833 is by the swing in the framework 832 that acts on of torque spring; Central authorities at swing seat 833 are provided with a conjugate foramen 8331, in order to engage with runners 84, are provided with catch in a side of swinging seat 833, with the backstop as fixed bar 8312 described later;

Side at connector 831 is provided with an adjusting lever 834, and this adjusting lever 834 can pass through a swing handle pivot offset, to adjust the torsion strength that is stood when swing seat 833 is swung; Opposite side at connector 831 is provided with a fixed bar 8312, and the end of this fixed bar 8312 is extended on the apical margin of above-mentioned catch;

After entire combination, when fixed bar 8312 ends abut against catch, to swing seat 833 and just can't swing, the chair back 81 also just can't tilt to wave with seat support 82; After fixed bar 8312 drew back, swing seat 833 just can be swung, but the chair back 81 is made the inclination rocking action with seat support 82 with regard to the torsion of mat spring.

Though aforementioned structure provides the comfortableness that tilts to wave for the seat person, but because of angle of inclination of the chair back 81 layback of this seat will inevitably make the seat support 82 identical angle that raises up, because such relation, when the elevation angle of seat support 82 is big, seat person's both feet the danger situation that causes crank to be fallen down because of moving after the center of gravity just may occur with built on stilts.

The utility model is to carry out the structural design improvement at aforesaid balance coordination and the not good shortcoming of security of commonly using product.

The purpose of this utility model is to provide a kind of to be had the splendid chair back that waves the seat of comfortableness and security and tilts to wave structure.

The purpose of this utility model is achieved by following technical solution.The chair back of seat of the present utility model tilts to wave structure, mainly by the chair back, seat support, support arm, Connection Block, the balance seat, connecting rod, compositions such as runners, wherein this chair back separates setting with seat support, Connection Block includes connector, framework, the swing seat, adjusting lever, loop bar, elements such as axostylus axostyle, connector and framework are combined into one and are provided with conjugate foramen on the end faces of connector, in framework, engage a swing seat by loop bar and axostylus axostyle, this swing seat engages with runners, in loop bar, be provided with a torque spring, the swing seat can be swung in framework, in addition, be provided with adjusting lever and fixed bar at the connector side, can adjust the torsion strength of spring by adjusting lever, can make it to be in by fixed bar control swing seat and stop or swing state, the chair back and seat support are provided with connecting hole on side and position that support arm engages, the chair back is provided with slotted eye to engage with connecting rod on the appropriate location in the middle of the bottom; Support arm is made by the rubber-like material, is provided with pivoted hole at two ends, is articulated on the chair back and the seat support by the two ends of pivot connecting element with support arm; The balance seat at one end is provided with plates, these plates are fixedlyed connected with the swing seat with suitable angle, make balance seat and swing seat be the interlock state, establish an axostylus axostyle at the other end of balance seat, this axostylus axostyle holds an end of a swing arm respectively at two ends, the other end of this swing arm is articulated in the bottom front of seat support by the fixed block location, but makes balance seat front end be swing state; Connecting rod is L-shaped, and an end inserts in the aforementioned slotted eye and is fixed on the chair back, and the other end is provided with through hole on the position corresponding to the conjugate foramen of connector, the other end of connecting rod can be fixedlyed connected with connector by tightening member; Be provided with projection on the appropriate location of a side of connecting rod, this projection is articulated on the seat support by the fixed block location; The chair back can drive support arm, connecting rod, Connection Block, the action of balance seat when receding, so that the chair back has better balance angle of inclination to seat support.

The utility model is described in detail below in conjunction with the accompanying drawings.In the accompanying drawings:

Fig. 1 is an exploded view of the present utility model;

Fig. 2 is a perspective view of the present utility model;

Fig. 3 illustrates action situation of the present utility model;

Fig. 4 is a structural representation of commonly using product;

Fig. 5 is a structural representation of commonly using Connection Block.

At first, see also Fig. 1, the utility model mainly is made up of the chair back 1, seat support 2, support arm 3, Connection Block 4, balance seat 5, connecting rod 6, runners 7 etc., wherein:

The chair back 1 separates setting with seat support 2, is provided with connecting hole 11 on the position that a side calcaneus branches brace 3 engages, and is provided with slotted eye 12 to hold connecting rod 6 and to be fixed by tightening member on the installation site corresponding to connecting rod 6 described later in the middle of the bottom;

Seat support 2 is provided with connecting hole 21 on the position that a side calcaneus branches brace 3 engages, to connect a support arm 3;

Support arm 3 is coating elastic sheet metal by the soft balsam compound and is making, and is provided with

pivoted hole

31,32 at two ends, by pivot connecting element support arm 3 is articulated on the chair back 1 and the seat support 2;

Connection Block 4 includes main elements such as connector 41, framework, swing seat 42, adjusting lever, loop bar, axostylus axostyle, and swing seat 42 can engage with runners 7, because of its structure with commonly use product roughly the same, so state no longer more;

Balance seat 5 at one end is provided with plates, and these plates are fixedlyed connected with swing seat 42 with suitable angle, makes balance seat 5 and swing seat 42 be the interlock state; Establish an axostylus axostyle 51 at the other end of balance seat 5, this axostylus axostyle 51 is provided with the axis hole 52 of an end that holds swing arm 53 at two ends, and the other end of swing arm 53 is articulated in the bottom front of seat support 2 by fixed block 54 location, but makes the front end of balance seat 5 be swing state;

Connecting rod 6 is L-shaped, and an end penetrates in the slotted eye 12 and is fixed on the chair back 1, and the other end is provided with through hole 61 on the position corresponding to the conjugate foramen 411 of the connector 41 of Connection Block 4, the other end of connecting rod 6 can be fixedlyed connected with connector 41 by tightening member; A side at connecting rod 6 is provided with projection 62 near on the appropriate location of connector 41 tail ends, and this projection 62 is articulated on the seat support 2 by fixed block 63 location.

Fig. 2 illustrates the situation that the utility model assembles, and the two ends of support arm 3 are articulated in respectively on the chair back 1 and the seat support 2, and the two ends of connecting rod 6 are separately fixed on the chair back 1 and seat support 2 and the connector 41; Swing seat 42 is fixedlyed connected with an end of balance seat 5, and the other end of balance seat 5 and seat support 2 are the pivot joint state;

Fig. 3 illustrates action situation of the present utility model, and behind the fixed bar that draws back Connection Block 4, but seat just is swing state; When the seat person will make the chair back 1 recede, the chair back 1 is owing to the performance that support arm 3 has elastically deformable recedes, simultaneously because the other end of connecting rod 6 is fixedlyed connected with the connector 41 of Connection Block 4, central authorities are the pivot joint state, to the front end of Connection Block 4 slightly be risen, and pass through the interior torque spring drive swing seat 42 upward swings lifting of loop bar, drive balance seat 5 simultaneously and be offset forward; Because the front end and the seat support 2 of balance seat 5 are the pivot joint state, so when 5 reaches of balance seat swing arm 53 is offset slightly forward, the result is that slight skew only takes place seat support 4;

When the seat person is not pressed to the chair back 1, the chair back 1 promptly reverts back to original state rapidly by the flexible restoring force of support arm 3.

By the above, structure of the present utility model is compared with commonly using product, has the following advantages:

1. because the chair back and seat support can be done the more inclination of coordinated balance and wave, the person that makes the seat is not afraid of and is moving Take place when doing because of the seat support too high danger of falling down of causing that raises up.

2. the user recedes the chair back as wanting, and the layback of health back is got final product, The product of commonly using must be with the layback of whole centre of body weight easily.

In sum, structure of the present utility model has better security than commonly using product really And practicality.

Claims

1. the chair back of a seat tilts to wave structure, mainly by the chair back, seat support, support arm, Connection Block, the balance seat, connecting rod, compositions such as runners, wherein this chair back separates setting with seat support, Connection Block includes connector, framework, the swing seat, adjusting lever, loop bar, elements such as axostylus axostyle, connector and framework are combined into one and are provided with conjugate foramen on the end faces of connector, in framework, engage a swing seat by loop bar and axostylus axostyle, this swing seat engages with runners, in loop bar, be provided with a torque spring, the swing seat can be swung in framework, in addition, be provided with adjusting lever and fixed bar at the connector side, can adjust the torsion strength of spring by adjusting lever, can make it to be in by fixed bar control swing seat and stop or swing state, it is characterized in that:

The chair back and seat support are provided with connecting hole on side and position that support arm engages, the chair back is provided with slotted eye to engage with connecting rod on the appropriate location in the middle of the bottom;

Support arm is made by the rubber-like material, is provided with pivoted hole at two ends, is articulated on the chair back and the seat support by the two ends of pivot connecting element with support arm;

The balance seat at one end is provided with plates, these plates are fixedlyed connected with the swing seat with suitable angle, make balance seat and swing seat be the interlock state, establish an axostylus axostyle at the other end of balance seat, this axostylus axostyle holds an end of a swing arm respectively at two ends, the other end of this swing arm is articulated in the bottom front of seat support by the fixed block location, but makes balance seat front end be swing state;

Connecting rod is L-shaped, and an end inserts in the aforementioned slotted eye and is fixed on the chair back, and the other end is provided with through hole on the position corresponding to the conjugate foramen of connector, the other end of connecting rod can be fixedlyed connected with connector by tightening member; Be provided with projection on the appropriate location of a side of connecting rod, this projection is articulated on the seat support by the fixed block location; The chair back can drive support arm, connecting rod, Connection Block, the action of balance seat when receding, so that the chair back has better balance angle of inclination to seat support.