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Backrest-seat synchronous linkage device for office chair

A technology of synchronous linkage and office chairs, which is applied in the field of swivel chairs and office chairs, can solve the problem of fewer parts and achieve the effect of simple structure and not easy to rub the back

Pending Publication Date: 2019-03-05
UE FURNITURE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention overcomes the deficiencies in the above-mentioned prior art, and firstly provides a back seat synchronous linkage device with a simpler structure and fewer parts. In order to improve the comfort and user experience; and in the process of reclining the seat back, the front and rear of the seat are lifted at the same time and the front lift is greater than the rear lift, which is more conducive to returning to the position

Method used

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  • Backrest-seat synchronous linkage device for office chair
  • Backrest-seat synchronous linkage device for office chair
  • Backrest-seat synchronous linkage device for office chair

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] Embodiment 1: first define the reference orientation of each part of the present invention, the present invention is when office chair is installed normally, and the front of office chair is front end, front part, and the rear of office chair comprises the position of chair back, seesaw where is Rear end, rear.

[0074] The synchronous linkage device for the back seat of the office chair of the present embodiment, such as Figure 1 to Figure 14 As shown, it includes a base 1, a bracket 2 for connecting the seat, a seesaw 3 for connecting the back of the chair, and at least one crank 4. The upper and lower ends of the crank 4 are respectively hinged with the front of the bracket 2 and the base 1. The crank 4 is arranged obliquely, and the seesaw 3 and the crank 4 are connected as a whole. It can also be said that the seesaw 3 and the crank 4 are integrally formed; The chute guide mechanism 5 for lifting guidance; when the seesaw 3 rotates to a larger or smaller inclinat...

Embodiment 2

[0082] Example 2: Figure 15 , 16 A base structure of the device of the present invention is illustrated, the base 1 includes a base plate 13 and side plates 14 extending upward along both sides of the base plate 13, the hinge point 41 between the lower end of the crank 4 and the base 1 is at the lower end of the side plate 14, for To meet the inclination of the crank, the height of the side plate 14 is more than 8CM; and the sleeve 44 for inserting the support rod is arranged in the base, and is reinforced by the cuboid reinforcement seat 47 surrounding the sleeve 44 in the base, but This may make the height and weight of the main body of the base 1 too large, which is not conducive to the development towards the direction of weight reduction.

[0083] Figure 17 , 18 An improved base structure is shown. The base 1 also includes a base plate 13 and side plates 14 extending upward along both sides of the base plate 13. The overall height of the side plates 14 is 3.5-4.5 cm....

Embodiment 3

[0086] Embodiment 3: as Figure 21 , 22 As shown, in this embodiment, no connection plate is provided on the bottom surface of the base 1, and the lug 43 is integrally formed with the bottom plate 13 or the side plate 14; A part cut out is bent downward; other technical solutions are the same as in embodiment 2.

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Abstract

The invention discloses a backrest-seat synchronous linkage device for an office chair. The backrest-seat synchronous linkage device comprises a base, a bracket, a warp plate and at least one crank. Two ends of each crank are hinged to the front portion of the bracket and the base, and the warp plate, and the warp plate and the at least one crank are connected into a whole. A slide groove guide mechanism for lifting guide of the rear portion of the bracket is arranged between the rear portion of the bracket and the base. When the warp plate rotates to form a large or small inclination angel relative to a perpendicular line, the front portion and the rear portion of the bracket moves up and down at the same time. The at least one crank is hinged to the front portion of the bracket, and therear portion of the bracket matches with the base through the slide groove guide mechanism, so that parts are simplified, and structural simplification is realized; the warp plate is provided with a long lever arm, when a backrest inclines backwards, a force applied to the backrest is transmitted to the crank through the warp plate, and due to the fact that the weight of human legs on the front portion of a seat is larger than that of hips on the rear portion of the seat, the front portion of the seat can be easily lift up while low load applied to the backrest is realized.

Description

technical field [0001] The invention relates to the technical field of swivel chairs and office chairs, in particular to a back seat synchronous linkage device for office chairs. Background technique [0002] In the prior art, there is a linkage device for synchronizing the seat and the back of the chair. When the back of the chair is reclined, the seat moves. synchronization device. Wherein the four-bar link mechanism includes two cranks, one in front and the other in back. The crank is hinged between the seat frame and the chair base, wherein the seat frame is integrated with the rear crank of the four-bar linkage. [0003] The front crank and the rear crank are inclined in different directions with respect to the same vertical, i.e. if the front crank is inclined at an acute counterclockwise direction with respect to the vertical, the rear crank is inclined clockwise with respect to the vertical Directions are inclined at acute angles; and vice versa. [0004] When th...

Claims

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Application Information

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IPC IPC(8): A47C1/032
CPCA47C1/03205
Inventor 何基叶金金明华
Owner UE FURNITURE CO LTD
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