JPS6144681Y2 - - Google Patents

Description

[Detailed explanation of the invention] In this case, the core material of the backrest is divided into two parts: the core material on the main body side and the core material of the backing material, and the two core materials are simply and aesthetically connected using a special joining fitting. This relates to a device for attaching the backrest of a chair, in which the core material 3' of the backrest main body 3 is fixed to the attachment piece 2 provided inside the back frame 1 with fasteners 4 such as screws, and the backrest is attached to the backrest. A plurality of coupling fittings 6 are fixed to the core material 5' of No. 5 with rivets 7, etc., and the coupling fittings 6 include a shaped frame 6' and elastic claw pieces 6'' on the back of the frame 6'. A through hole 8 corresponding to the coupling fitting 6 is bored in the core material 3' of the back support main body 3, the coupling fitting 6 is inserted into the through hole 8, and the frame 6' of the coupling fitting 6 is inserted. The gist of the structure is such that the edge of the through hole 8 is engaged with the end edge of the through hole 8, and the tip of the claw piece 6'' is brought into contact with the inner wall surface of the through hole 8.

The details of the present invention will be explained below with reference to an embodiment shown in the drawings. 1 is a back frame of the chair, 2 is a mounting piece protruding from the inside of the back frame, and 3 is a cushioning material 3'' on the surface of a core material 3' and an outer layer. 3 is a back support main body, and the mounting piece 2 is fixed to the back side of the core material 3' with a fixing device 4 such as a screw. 5 is a back support body equipped with a skin 5'' on one side of the core material 5'. This is a backing made of a core material 5' with four connecting metal fittings 6 fixed by rivets 7, and the connecting metal fittings 6 include a shaped frame 6' and an elastic back part of the frame 6'. A through hole 8 corresponding to the coupling fitting 6 is bored in the core material 3' of the back support main body 3, and the through hole 8 is formed as shown in FIG. Insert the coupling fitting 6 and push it upward so that the end edge of the through hole 8 engages with the shaped frame 6' and the tip of the claw piece 6'' engages with the inner wall surface of the through hole 8. Then, both core members 3' and 5' are joined together, and the attachment piece 2 is interposed between both core members 3' and 5', so that the core members 3' and 5' are completely hidden.

As described above, in this case, the core material 3' of the back support main body 3 is fixed to the mounting piece 2 provided inside the back frame 1 with fasteners 4 such as screws, and a plurality of The connecting metal fittings 6 are fixed with rivets 7 or the like, and the connecting metal fittings 6 consist of a shaped frame 6' and elastic claw pieces 6'' on the back of the frame 6'. A through-hole 8 corresponding to the coupling fitting 6 is bored in the core material 3', the coupling fitting 6 is inserted into the through-hole 8, and the edge of the through-hole 8 is inserted into the frame 6' of the coupling fitting 6. With regard to the configuration in which the tip of the claw piece 6'' is engaged with the inner wall surface of the through hole 8, the mounting piece 2 fixed to the back frame 1 is completely hidden within the back support and exposed to the outside. By inserting the coupling fitting 6 of the backing 5 into the through hole 8 drilled in the core 3' of the back main body 3, both core materials 3', 5' can be obtained. It is easy to install because the edge of the through hole 8 engages with the frame 6' of the joining fitting 6, and the tip of the claw piece 6'' is connected to the through hole 8.
This has the advantage that it can be attached safely and strongly without the risk of the backing 5 falling off.

[Brief explanation of the drawing]

The drawings show an example of the present invention. Figure 1 is a rear view of the backrest of the chair, Figure 2 is a vertical sectional view of the backrest showing the main parts, and Figure 3 is the backrest with the main body attached. 4 is a longitudinal cross-sectional view of the state, and FIG. 5 is a front view of the seat back main body when the coupling fitting is engaged with the through hole drilled in the core material of the back main body. FIG. 6 is a perspective view of the coupling fitting, and FIG. 7 is a sectional view of essential parts showing the order in which the backing is attached to the backing main body. 1... Back frame, 2... Mounting piece, 3... Back support body, 3'... Core material, 4... Fastener, 5... Backing, 5'... Core material, 6... Connection Metal fittings, 6'...Frame body, 6''...Claw pieces, 7...Rivets, 8...Through holes.

Claims (1)

[Scope of utility model registration request] The core material 3' of the back support body 3 is fixed to the mounting piece 2 provided inside the back frame 1 with fasteners 4 such as screws, and a plurality of coupling fittings 6 are attached to the core material 5' of the back support 5.
is fixed with rivets 7 etc., and the coupling fitting 6 is
It consists of a shaped frame 6' and an elastic claw piece 6'' on the back of the frame 6', and a through hole 8 corresponding to the coupling fitting 6 is bored in the core material 3' of the back support main body 3. , the through hole 8
The coupling fitting 6 is inserted into the coupling fitting 6, the edge of the through hole 8 is engaged with the frame 6' of the coupling fitting 6, and the tip of the claw piece 6'' is brought into engagement with the inner wall surface of the through hole 8. A device for attaching a backrest to a chair, characterized in that: