Chair Backrest that is Assembled and Disassembled Easily and Quickly Without Needing Aid of a Hand Tool
a backrest and easy-to-assemble technology, applied in the field of backrests, can solve the problems of user inconvenience, user inconvenience, and inability to gather the backrest, and achieve the effect of easy-to-assemble and-disassemble, easy-to-assemble and-disassemble, and easy-to-assemble and-disassembl
Inactive Publication Date: 2009-09-10
CHEN CHAO JAN +1
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
[0012]The primary objective of the present invention is to provide a chair backrest that is assembled and disassembled easily and quickly without needing aid of a hand tool.
[0013]Another objective of the present invention is to provide a chair backrest, wherein the backrest cushion is mounted on and detached from the support frame by forcing and retracting the snapping portion of the backrest cushion, so that the chair backrest is assembled and disassembled easily and quickly without needing aid of any hand tool, thereby facilitating the user assembling and disassembling the chair backrest, and thereby facilitating the user replacing the backrest cushion.
Problems solved by technology
However, the locking screw 20 are screwed and unscrewed by aid of a hand tool, such as a screwdriver, so as to assemble and disassemble the chair backrest, so that the chair backrest cannot be assembled and disassembled easily and quickly, thereby causing inconvenience to a user when assembling and disassembling the chair backrest.
Further, the locking screw 20 are easily missed after being unscrewed, thereby greatly causing inconvenience to the user when assembling and disassembling the chair backrest.
Method used
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Embodiment Construction
[0023]Referring to the drawings and initially to FIGS. 1-3, a chair backrest in accordance with the preferred embodiment of the present invention comprises a support frame 3 and a backrest cushion 4.
[0024]The support frame 3 is a substantially arc-shaped hollow frame. The support frame 3 has a narrower upper portion and a wider lower portion. The support frame 3 has a convex middle portion. The support frame 3 has an inner periphery provided with a support portion 31. The support portion 31 of the support frame 3 has an upper end and a lower end each provided with a substantially semi-circular locking groove 311 and has a right side and a left side each provided with a locking face 312. The support portion 31 of the support frame 3 has an upper edge provided with a plurality of locking blocks 32 each having an inner face provided with a barb-shaped tapered face. In the preferred embodiment of the present invention, the locking blocks 32 are formed on the upper edge of the upper end,...
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A chair backrest includes a support frame having an inner periphery provided with a support portion which has an upper edge provided with a plurality of locking blocks, and a backrest cushion having a periphery provided with an elastic snapping portion which is snapped onto the support portion of the support frame and retained by the locking blocks of the support frame. Thus, the backrest cushion is mounted on and detached from the support frame by forcing and retracting the snapping portion of the backrest cushion, so that the chair backrest is assembled and disassembled easily and quickly without needing aid of any hand tool, thereby facilitating the user assembling and disassembling the chair backrest, and thereby facilitating the user replacing the backrest cushion.
Description
BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a backrest and, more particularly, to a backrest for a chair.[0003]2. Description of the Related Art[0004]A conventional chair backrest in accordance with the prior art shown in FIGS. 6 and 7 comprises a support bracket 1 and a backrest cushion 2. The support bracket 1 has two parallel support bars 11 each provided with a mounting groove 12 and a mounting hole 13. The backrest cushion 2 has two parallel connecting portions 21 each provided with a snapping groove 22 and a mounting bore 23. In assembly, each of the connecting portions 21 of the backrest cushion 2 is inserted into the mounting groove 12 of the respective support bar 11 of the support bracket 1, and the conventional chair backrest further comprises two locking screw 20 each extending through the mounting hole 13 of the respective support bar 11 of the support bracket 1 and the mounting bore 23 of the respective connecting po...
Claims
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Login to View More IPC IPC(8): A47C7/40
CPCA47C7/282A47C31/023A47C7/40
Inventor CHEN, CHAO-JANHUNG, CHING-CHANG
Owner CHEN CHAO JAN