Patent Application
20190365106
The present invention relates to a chair back structure for connecting with a flexible sheet in which a support plate includes two tilted abutting tabs configured to abut against with a moving segment of a flexible sheet, such that when the moving segment is operated to change a curvature of a flexible sheet, the moving segment slides along the two tilted abutting tabs forward or backward so as to produce a displacement, thus enhancing a bending deformation of the chair back so as to support a waist and back of user.
A conventional chair back of a chair has a curvature so as to support a waist and a back of using completely, but a variety of users have different heights and figures respectively, so the chair cannot be applicable for different heights and figures. To overcome such a defect, a flexible sheet is fixed on the chair back.
The flexible sheet contains a curvature, wherein a first end of the flexible sheet is a fixing segment connected on a support plate, and a second end of the flexible sheet is a moving segment abutting against the support plate, wherein a guide rope is coupled between the fixing segment and the moving segment and is pulled by an adjuster so as to control a length of the guide rope (or at least one spring is connected between the fixing segment and the moving segment). After changing the length of the guide rope, a distance between the moving segment and the fixing segment of the flexible sheet is changeable so as to change the curvature of the flexible sheet, thus adjusting the curvature of the chair back outside the flexible sheet so as to comply with using requirements of the variety of users. However, the moving segment of the flexible sheet only slides on the support plate, so a displacement of the chair back pushed by the flexible sheet is slight. To solve such a problem, only increasing a size of the flexible sheet or the length of the guide rope is available, but a production cost is high.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
The primary objective of the present invention is to provide chair back structure for connecting with a flexible sheet in which a support plate includes two tilted abutting tabs configured to abut against with a moving segment of a flexible sheet, such that when the moving segment is operated to change a curvature of a flexible sheet, the moving segment slides along the two tilted abutting tabs forward or backward so as to produce a displacement, thus enhancing a bending deformation of the chair back so as to support a waist and back of user.
Another objective of the present invention is to provide a chair back structure for connecting with a flexible sheet in which a slope of each of two tilted abutting tabs is tilted or arcuate, for example, when the slope of each abutting tab is tilted, a curvature of the flexible sheet is adjustable quickly; when the curvature of the flexible sheet is arcuate, the curvature of the flexible sheet is adjustable smoothly, wherein when the slope of each abutting tab is continuously arcuate, the chair back supports a waist and a back of the user matingly by using each abutting tab.
To achieve above-mentioned objective, a chair back structure for connecting with a flexible sheet provided by the present invention, the flexible sheet is mounted on a support plate so as to adjust a curvature of a chair back by changing a curvature between two ends of the flexible sheet, wherein a fixing segment of the flexible sheet is connected with an end of the support plate.
The support plate includes two tilted abutting tabs configured to abut against with a moving segment of the flexible sheet in a sliding path, such that when the moving segment is operated to change the curvature of the flexible sheet, the moving segment slides along the two tilted abutting tabs forward or backward so as to produce a displacement, thus enhancing a bending deformation of the chair back
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, a preferred embodiment in accordance with the present invention.
A chair back structure for connecting with a flexible sheet according to a preferred embodiment of the present invention, the flexible sheet 1 is mounted on a support plate 2 so as to adjust a curvature of a chair back 3 by changing a curvature between two ends of the flexible sheet 1, wherein a fixing segment 11 of the flexible sheet 1 is connected with an end of the support plate 2, and the support plate 2 includes two tilted abutting tabs 21 configured to abut against with a moving segment 12 of the flexible sheet 1 in a sliding path (stroke), as shown in
The two tilted abutting tabs 21 are integrally formed or are removably connected on the support plate 2 with at least one fixed member 6 respectively (as shown in
In assembly, the fixing segment 1 of the flexible sheet 1 is connected with the end of the support plate 2 so that the moving segment 12 of the flexible sheet 1 abuts against the two tilted abutting tabs 21 (the two tilted abutting tabs 21 are located above or below the flexible sheet 1, i.e., the flexible sheet 1 is located above or below the support sheet 2 by way of the moving segment 12, as illustrated on
Preferably, the slope of each abutting tab 21 is tilted or arcuate, for example, when the slope of each abutting tab 21 is tilted, the curvature of the flexible sheet 1 is adjustable quickly; when the curvature of the flexible sheet 1 is arcuate, the curvature of the flexible sheet 1 is adjustable smoothly. In addition, when the slope of each abutting tab 21 is continuously arcuate, the chair back 3 supports the waist and the back of the user matingly by using each abutting tab 21.
While various embodiments in accordance with the present invention have been shown and described, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.
