Backrest adjusting device of seat for engineering machine

An adjustment device and engineering machinery technology, applied in the direction of movable seats, etc., can solve the problems of unstable position, inability to adjust the position of the backrest, and large safety hazards, and achieve good shock absorption and stability, free position adjustment, and bite Stable and reliable effect

Inactive Publication Date: 2012-01-11
管芝连
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The seats used in the technical field of construction machinery adopt old-fashioned structures, some cannot adjust the position of the backrest, and some can adjust the position, but it is inconvenient to adjust, and the position is even unstable. Low, high failure rate, great safety hazard, not conducive to the use of drivers

Method used

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Experimental program
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Effect test

Embodiment Construction

[0009] The present invention will be further explained below in combination with specific embodiments.

[0010] A backrest adjustment device for a seat used in construction machinery, comprising a backrest and a base connected to each other, characterized in that: the backrest and the base are provided with joint joints, and springs for shock absorption are arranged on the joint joints. A chute is fixed on the outside of the spring, an adjustment chain is arranged on the chute, and an adjustment handle is arranged on the adjustment chain.

[0011] Teeth used in conjunction with the adjustment chain are arranged on the adjustment handle.

[0012] The present invention adjusts the position of the backrest through the toothed chain, and the design is simple. In use, only the handle is needed to adjust the position of the backrest. In addition, in use, the engagement of the toothed chain is stable and reliable. A shock-absorbing spring is arranged beside the tooth chain, which ha...

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PUM

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Abstract

The invention discloses a backrest adjusting device of a seat for an engineering machine. The backrest adjusting device of the seat for the engineering machine comprises a backrest and a base which are mutually connected. The backrest adjusting device is characterized in that the backrest and the base are provided with connecting convex points matched for use, a spring for shock absorption is arranged on the connecting convex points, a chute is fixed at the outer side of the spring, an adjusting chain is arranged on the chute, and an adjusting handle is arranged on the adjusting chain. The backrest adjusting device of the seat for the engineering machine has a simple structure, is convenient to use, can be used for realizing free position adjustment of the backrest of the seat, and has the advantages of good shock absorption property and stability.

Description

technical field [0001] The invention relates to a seat, in particular to a backrest adjustment device of a seat for engineering machinery. Background technique [0002] At present, seats are relatively common and widely used in the technical field of construction machinery. The seats used in the technical field of construction machinery adopt old-fashioned structures, some cannot adjust the position of the backrest, and some can adjust the position, but it is inconvenient to adjust, and the position is even unstable. Low, high failure rate, great potential safety hazard, which is not conducive to the use of drivers. Contents of the invention [0003] Purpose of the invention: In view of the deficiencies in the prior art, the purpose of the invention is to provide a backrest adjustment device for engineering machinery seats, so as to freely adjust the position of the backrest of the seat. [0004] Technical solution: In order to realize the above-mentioned purpose of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60N2/22
Inventor 管芝连
Owner 管芝连
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