CN2224552Y - Adjustable back of chair - Google Patents

Abstract

The utility model relates to a supine apparatus of a chair. A seat cushion of a chair seat can be arranged on the upper end of a foundation support, a foot rack seat and a connection seat are pivoted at the bottom of the front end of the foundation support, and the foot rack seat can be sheathed on a foot rack. Long groove holes are respectively penetrated through on both sides of the connection seat, a back seat is pivoted at the bottom of the back end of the foundation support, one end of the back seat can be movably arranged inside the long groove hole of the connection seat, and a chair-back is arranged on the upper part of the other end of the back seat. The back seat taking pivot joint between the back seat and the foundation support as a fulcrum can be linked with the foundation support to cause the foundation support to deflect backwards and downwards, and the long groove holes cause the connection seat to upwards bunt the foundation support, so that the supine angle of the chair seat of the foundation support is slightly less than the supine angle of the chair-back of the back seat, which ensures a user to stretch own back appropriately.

Description

Adjustable back of chair

The utility model relates to a kind of Adjustable back of chair, particularly relate to a kind of seat support that makes the chair tool backward lying angle be slightly smaller than chair back lying angle backward, the Adjustable back of chair of the better comfort of user is provided.

Common people are sitting in chair tool the preceding paragraph after the time, can unconsciously the back be faced upward to lie on the chair back, to stretch muscles and bones, alleviate fatigue, therefore have the chair tool of facing upward the function of lying and are liked by worker who bends over the desk for a long time or general company.The chair tool was had faced upward the function of lying, common mode is rocking equipment of installing on the chair tool, but no matter the function of this kind rocking equipment is only to have the chair back to be faced upward lie or can be made the chair back and seat support face upward the function of lying simultaneously, for ergonomics, its shortcoming is all arranged, for example, the function that can provide the chair back to lie to layback, can only allow user's back face upward to the back lower place lies, the seat support position then is inactive state, and is uncomfortable during use, and the stretching, extension that can't allow user's muscles and bones reaching fill part; With the chair tool that the chair back and seat support are lain to layback, its seat support and the chair back are simultaneously toward the same angle of lying of swinging back, so can only allow the whole health of user swing an angle backward, can't allow user's ridge do appropriate stretching, extension, therefore, the rocking equipment of chair tool all can not provide user's the good extension effects of ridge in the past.

The purpose of this utility model is providing a kind of Adjustable back of chair, and the seat support that can make chair tool lying angle backward is slightly smaller than chair back lying angle backward, allows user's ridge obtain the preferable effect of unfolding.

The technical solution of the utility model is:

A kind of Adjustable back of chair is characterized in that:

This Adjustable back of chair comprises a pedestal, a Connection Block, a foot rest seat and a back seat;

This pedestal is the saturating empty cuboid in a bottom;

This Connection Block also is the saturating empty cuboid in a bottom, and the position is in this pedestal front bottom end, and these Connection Block two respective side provide corresponding mutually and a tilt long slot bore respectively;

This foot rest seat is installed with in this Connection Block and with this Connection Block and together is hubbed on this pedestal, has vertically provided a hole on this foot rest seat;

This back seat is a hollow form cuboid, is hubbed on this bottom, pedestal rear end, and this back seat one end is provided with the fin of a pair of symmetry shape, and this is located in the long slot bore of this Connection Block with a pin rod movably to fin.

Effect of the present utility model is: the pedestal upper end of this Adjustable back of chair can be provided with the seat cushion of seat support, the pedestal front bottom end is pivoted with a foot rest seat and a Connection Block that is coated on the foot rest seat outside, this foot rest seat can be placed on the foot rest, these Connection Block two respective side respectively provide the long slot bore of a correspondence, bottom, pedestal rear end also is pivoted with a back seat, pin rod of this back seat one end mat is located in this Connection Block long slot bore movably, and other end top is provided with a chair back.When back seat is a fulcrum interlock pedestal during to back lower place beat with itself and pedestal articulated section, this long slot bore of mat makes up this pedestal of contact of Connection Block, and makes the angle of the seat support layback on the pedestal be slightly smaller than the angle of the chair back layback on the back seat.When allowing the user be sitting on the chair tool, ridge can obtain better unfolding.

The utility model comprises a pedestal, a Connection Block, a foot rest seat and a back seat, this pedestal is the saturating empty cuboid in a bottom, the upper end is provided with the seat cushion of a seat support, this Connection Block is the hollow, rectangular body, and be located at the pedestal front bottom end, the two-phase respective side provides corresponding mutually and a tilt long slot bore respectively, and this foot rest seat is installed with in Connection Block and with Connection Block and together is hubbed at this pedestal front bottom end, vertically provides a hole that can be placed on the foot rest on this foot rest seat.The rectangular hollow form of this back seat, and be hubbed on bottom, pedestal rear end, one end is provided with a pair of symmetry shape fin, and this is located in this Connection Block long slot bore movably to pin rod of fin mat, the other end can establish a chair back and one make the chair back and seat support backward elasticity face upward the swing unit of lying.When the user be seated on the seat cushion and the arm-chair of lying backward unlucky, this back seat can itself and pedestal articulated section be that fulcrum interlock pedestal is to back lower place beat, and making Connection Block by the long slot bore that Connection Block tilts is up this pedestal of contact of fulcrum with itself and pedestal, foot rest seat articulated section, makes the angle of the chair tool layback on the pedestal be slightly smaller than the angle that the chair back is swung back.

Below by most preferred embodiment and accompanying drawing Adjustable back of chair of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the three-dimensional exploded view of the utility model preferred embodiment.

Fig. 2 is the stereogram of the utility model preferred embodiment.

Fig. 3 is that the action schematic diagram is analysed and observe in the utility model preferred embodiment side.

Fig. 4 is the upward view of the utility model preferred embodiment.

As shown in Figure 1, the Adjustable back of chair of the utility model preferred embodiment roughly is to be that material is made with the metal, comprises a pedestal 1, Connection Block 2, a foot rest seat 3 and a back seat 4.

This pedestal 1 is the saturating empty cuboid in a bottom, the both sides, upper end respectively outward level convex with a pair of lug 11, on each lug 11 and be provided with coupling hole 111, pedestal 1 front and back ends both sides and respectively correspondence be provided with a pivoted hole 12,13.

This Connection Block 2 also is the saturating empty cuboid in a bottom, the width of Connection Block 2 is slightly smaller than the width of pedestal 1, to be installed with in pedestal 1 front bottom end, front end both sides correspondence respectively are provided with a pivoted hole 21, the both sides, rear end provide corresponding mutually and a tilt long slot bore 22 respectively, between Connection Block 2 and pedestal 1 bottom and be provided with a compression spring 23, this compression spring 23 contact pedestal 1 up.

This foot rest seat 3 roughly is the hollow, rectangular shape, and width is slightly smaller than the width of Connection Block 2, and is located in the bottom of this Connection Block 2, has vertically provided hole 31, two respective side on this runners frame 3 and has been respectively equipped with pivoted hole 32.This foot rest seat 3 is located at Connection Block 2 bottoms, this Connection Block 2 is located at pedestal 1 front bottom end, make the pivoted hole 21,12 of the pivoted hole 32 of this foot rest seat 3, and pass, make foot rest seat 3 and Connection Block 2 together be hubbed on pedestal 1 front bottom end with a pin rod 33 corresponding to Connection Block 2, pedestal 1.In addition, this foot rest seat 3 is provided with an adjusting lever 34, and this adjusting lever 34 is arranged in the foot rest seat 3 by hole default on Connection Block 2 and the foot rest seat 3, to adjust the height of foot rest.

This back seat 4 roughly is a hollow, rectangular body, pin rod of back seat 4 mats 41 articulates mutually with the pivoted hole 13 of pedestal 1 rear side, these back seat 4 one ends are provided with a pair of symmetry shape fin 42, this is to being respectively equipped with the long slot bore 22 corresponding coupling holes 421 with Connection Block 2 on the fin 42, pass another pin rod 422 on coupling hole 421 and the long slot bore 22, and fin 42 is located on this Connection Block 2 movably.The other end of this back seat 4 vertically is provided with a scarfing slot 43, and near these scarfing slot 43 places be provided with one can make the chair back and seat support backward elasticity face upward the swing unit 5 of lying, this swing unit 5 comprises that a screw rod 51, spring 52 and bottom have the cup 53 of internal thread 531, this screw rod 51 passes the default perforation (the figure end shows) of this back seat 4 from top to bottom, and passes this spring 52, cup 53 in regular turn and be arranged in the internal thread 531 of cup 53 bottoms.

As shown in Figure 1, 2, when the utility model is assembled on the chair tool, but most affixed elements 14 of mat are installed in this pedestal 1 the seat cushion 1 ' below of a seat support, the hole 31 of foot rest seat 3 is nested with on a foot rest 6, be embedded a chair back rack 431 again on the scarfing slot 43 of back seat 4, this chair back rack 431 of mat is located at this back seat 4 tops with a chair back 432.

As Fig. 3, shown in 4, during use, when the user lies the power of the arm-chair back of the body 431 during greater than the elastic force of the spring 52 of swing unit 5 backward, by this pedestal 1 and Connection Block 2, reach the pivot joint relation between pedestal 1 and the back seat 4 between the foot rest seat 3, this back seat 4 can be that fulcrum interlock pedestal 1 is to back lower place beat with its pin rod 41 with pedestal 1 pivot joint, because the fin 41 of back seat 4 is to be located at movably in the long slot bore 22 of this Connection Block 2, and suitable angle of long slot bore 22 inclinations, so when back seat 4 during toward back lower place beat, the fin 42 of back seat 4 can up push against the ramp 221 of long slot bore 22 via pin rod 422, force Connection Block 2 up to replace pedestal 1, and the pedestal 1 toward back lower place beat is formed the upwards power of pushing tow, make the angle of pedestal 1 layback go up some and slightly littler than the angle of back seat 4 layback, the angle of the 1 ' layback of the seat cushion on the pedestal 1 just can be slightly smaller than the angle of the chair back 431 layback, supplies user's ridge to obtain the better effect of unfolding.

In sum, the utility model is established the seat cushion 1 ' of seat support in pedestal 1 upper end, at pedestal 1 front bottom end be pivoted foot rest seat 3 and a Connection Block 2 that is coated on foot rest seat 3 outsides, this foot rest seat 3 is placed on the foot rest 6, the both sides of Connection Block 2 respectively are provided with the skewed long slot bore 22 of a correspondence, pedestal 1 bottom also is pivoted with back seat 4, two fins 42 of back seat 4 one ends are located in the long slot bore 22 of Connection Block 2 movably by pin rod 422, back seat 4 other ends bottom is provided with a swing unit 5, and on the chair back 432 can be set, by above-mentioned structure, the chair tool is had face upward the effect of lying, and the angle that the seat support that can make the chair tool is lain to layback is little than the chair back 432, and when this user was sitting on the chair tool, ridge can be done better unfolding.

Claims (1)

1, a kind of Adjustable back of chair is characterized in that:

This Adjustable back of chair comprises a pedestal, a Connection Block, a foot rest seat and a back seat;

This pedestal is the saturating empty cuboid in a bottom;

This Connection Block also is the saturating empty cuboid in a bottom, and the position is in this pedestal front bottom end, and these Connection Block two respective side provide corresponding mutually and a tilt long slot bore respectively;

This foot rest seat is installed with in this Connection Block and with this Connection Block and together is hubbed on this pedestal, has vertically provided a hole on this foot rest seat;

This back seat is a hollow form cuboid, is hubbed on this bottom, pedestal rear end, and this back seat one end is provided with the fin of a pair of symmetry shape, and this is located in the long slot bore of this Connection Block with a pin rod movably to fin.

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