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Inclination Adjusting Device for Chair Seat

a technology of inclination angle and adjusting device, which is applied in the direction of chairs, movable seats, transportation and packaging, etc., can solve the problems of user sitting in the seat b>6/b>′ being liable to fall backward, and the rearward inclination angle of the backrest b>8/b>′ being unable to be adjusted

Inactive Publication Date: 2009-03-12
SU TUNG HUA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the swaying angle of the backrest 8′ is the same as that of the seat 6′, a user sitting in the seat 6′ is liable to fall backward due to excessive rearward inclination of the backrest 8′.
Furthermore, the rearward inclination angle of the backrest 8′ can not be adjusted.

Method used

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  • Inclination Adjusting Device for Chair Seat
  • Inclination Adjusting Device for Chair Seat
  • Inclination Adjusting Device for Chair Seat

Examples

Experimental program
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Embodiment Construction

[0022]An inclination adjusting device according to the preferred teachings of the present invention is shown in FIGS. 1-7 and can be utilized with a chair. According to the preferred form shown, the chair includes a seat 4, a backrest 6, a backrest support 61, having an upper end to which the backrest 6 is fixed, and a pneumatic rod 5 for adjusting a height of the backrest 6.

[0023]According to the preferred form shown, the inclination adjusting device includes an upper seat 1 fixed to and below the seat 4 and having a recess 11 in an underside thereof. A substantially U-shaped coupling member 12 is mounted in a rear end of the recess 11 (FIG. 3) and includes a plurality of vertically spaced engaging portions 121a, 121b, and 121c in the form of grooves. The coupling member 12 includes aligned elongated holes 122 in two arms thereof.

[0024]A lower seat 2 is pivotably mounted to and below the upper seat 1. A bottom of the lower seat 2 is engaged with a top end of the pneumatic rod 5 (FI...

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PUM

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Abstract

An inclination adjusting device includes an upper seat mounted below a chair seat of a chair. A coupling member is mounted to a rear end of the upper seat and includes a plurality of vertically spaced engaging portions. A lower seat is pivotably mounted to and below the upper seat. An inclination adjusting rod is pivotably mounted to a rod mounting board in the lower seat. An actuating board is connected to the inclination adjusting rod and includes at least one engaging protrusion for releasably and selectively engaging with the vertically spaced engaging portions of the coupling member. The inclination adjusting rod is pivotable between a first position in which the at least one engaging protrusion is engaged with one of the engaging portions of the coupling member and a second position in which the at least one engaging protrusion is disengaged from the engaging portions of the coupling member.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to an inclination adjusting device and, more particularly, to a device for adjusting an inclination angle of a seat of a chair.[0003]2. Description of the Related Art[0004]FIG. 8 shows an exploded perspective view of a conventional inclination adjusting device for a chair seat. FIG. 9 shows a partially-sectioned side view of a conventional chair 8′ with the inclination adjusting device of FIG. 8 that can adjust an inclination angle of a seat 68 of the chair 8′. The inclination adjusting device includes a swayable seat 1′ having fixing holes 11′ for coupling with the seat 6′. A coupling hole 12′ is defined in a central portion of the swaying seat 1′ for coupling with a spring device 3′. A coupling rod 5′ is extended through a through-hole 14′ in a sidewall of the swayable seat 1′ and through aligned through-holes 23′ in two lateral sidewalls of a coupling seat 2′ to allow pivotal movement of...

Claims

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Application Information

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IPC IPC(8): A47C1/024
CPCA47C1/03238A47C1/03255
Inventor SU, TUNG-HUA
Owner SU TUNG HUA