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Backrest adjusting auxiliary device

An auxiliary device and backrest technology, applied in the field of backrest adjustment auxiliary devices, can solve problems such as affecting user experience, moving, and aggravating user discomfort.

Pending Publication Date: 2019-10-18
国家康复辅具研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the design of usual seats and wheelchairs, the existence of the backrest is indispensable, and the angle adjustment function of the backrest is very popular now. However, existing seat and wheelchair technologies, such as seats that can lie flat and standing Wheelchairs, all involve changes in the angle of the backrest relative to the seat. During the adjustment of the backrest angle, the user's back and the backrest of the device will move relative to each other.
However, this relative movement is undesirable and will generate a shear force between the device and the user's body, which will aggravate the user's discomfort and affect the user's experience.
At the same time, in the use of wheelchairs, the shear force will aggravate the occurrence of bedsores in people with lower limb dysfunction who have been sitting or lying down for a long time

Method used

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Examples

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Embodiment Construction

[0018] Attached below Figure 1-5 Specific embodiments of the present invention will be described in detail.

[0019] like Figure 1-5 As shown, the backrest adjustment auxiliary device includes a seat frame 48 , a backrest frame 26 , a push frame 1 , a fixing bar 8 , a link mechanism 30 , an armrest 21 , a seat cushion 67 and a driver 54 .

[0020] The handrail 21 is hinged with the push frame 1, the two ends of the fixing bar 8 are fixed between the push frames 1 through threaded connection, the backrest frame 26 and the fixed bar 8 are fixed through a threaded connection, one end of the driver 54 is hinged with the seat frame 48, and the other end Hinged with the backrest connector 76. The upper end of the backrest connector 76 is fixed on the backrest frame 26, and the lower end extends downward from the bottom of the backrest frame 26. The lower end of the backrest connector 76 has two opposite connection ends, and the pin shaft is connected to the two connection ends. ...

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PUM

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Abstract

The invention discloses a backrest adjusting auxiliary device; the backrest adjusting auxiliary device comprises a seat frame, a backrest frame, a connecting rod mechanism and a driving part, whereinone end of the driving part is hinged to the seat frame, and the other end is hinged to a backrest connecting piece; the upper end of the backrest connecting piece is fixed on the backrest frame, andthe lower end of the backrest connecting piece extends downwards from the lower portion of the backrest frame; two opposite connecting ends are arranged at the lower ends of the backrest connecting piece; a pin shaft is connected to the two connecting ends; the other end of the driving part is hinged to the pin shaft; the seat frame is hinged to the backrest frame; a cushion is arranged on the seat frame; a backrest cushion is arranged on the backrest frame; and the connecting rod mechanism is used for driving the backrest cushion to slide up and down relative to the backrest frame.

Description

technical field [0001] The invention relates to a rehabilitation aid, in particular to a backrest adjustment auxiliary device, which can avoid relative movement between the user's back and the backrest during the rotation process of the backrest frame relative to the seat frame. Background technique [0002] In the design of usual seats and wheelchairs, the existence of the backrest is indispensable, and the angle adjustment function of the backrest is very popular now. However, existing seat and wheelchair technologies, such as seats that can lie flat and standing Wheelchairs all involve changes in the angle of the backrest relative to the seat. During the adjustment of the backrest angle, the user's back and the backrest of the device will move relative to each other. However, this relative movement is undesirable and will generate a shear force between the device and the user's body, which will aggravate the user's discomfort and affect the user's experience. At the same...

Claims

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Application Information

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IPC IPC(8): A47C7/46
CPCA47C7/462
Inventor 兰陟王丽李宏亮王强单博学
Owner 国家康复辅具研究中心
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