CN214072580U

CN214072580U - Chair and backrest structure thereof

Info

Publication number: CN214072580U
Application number: CN202022193741.XU
Authority: CN
Inventors: 冷鹭浩
Original assignee: New Tec Integration Xiamen Co Ltd
Current assignee: New Tec Integration Xiamen Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2021-08-31
Anticipated expiration: 2030-09-29

Abstract

The utility model discloses a chair and back structure thereof, chair back structure include the back board and are used for supporting the back frame of back board, the back board is the plastic slab, the back frame is the metal frame, the back board is at least the border turns over towards the back and turns over a formation knot limit, the back frame corresponds the knot limit is equipped with slot or slotting, it inserts to detain the limit in the middle of slot or slotting, the back frame is pressed from both sides tightly fixed residence through the riveting and is detained the limit. The buckling edge is inserted into the slot or the inserting seam, the whole buckling edge is riveted and fixed, the connecting area or the connecting length of the backrest plate and the backrest frame is greatly improved, and one or two independent points are not stressed, so that the backrest plate can be firmly installed on the backrest frame.

Description

Chair and backrest structure thereof

Technical Field

The utility model relates to a chair and a backrest structure thereof, in particular to a folding chair and a backrest structure thereof.

Background

There are a wide variety of chairs, with or without a backrest, with plastic or iron or wood chairs, with foldable chairs and with non-foldable chairs, etc.

The foldable backrest chair is mostly used by ordinary families, most of the chairs use metal pipes as frames, and use plastic plates as seat plates and backrest plates, and the backrest plates are either locked on the frames or inserted on the frames. If the back board is locked on the frame, screw holes need to be reserved on the back board, and the back board is easy to damage when the screws are screwed down, and if the back board is inserted on the frame, the back board can be taken down at will, and the structure is not firm enough. Accordingly, creative improvements in the backrest structure of the chair are needed to allow the back-plate to be more firmly coupled to the frame without causing damage to the back-plate.

SUMMERY OF THE UTILITY MODEL

The utility model provides a chair and back structure thereof, the structure is more firm, life is more permanent. The utility model provides a technical scheme that its technical problem adopted is:

the backrest structure of the chair comprises a backrest plate and a backrest frame used for supporting the backrest plate, wherein the backrest plate is a plastic plate, the backrest frame is a metal frame, at least the upper edge of the backrest plate is turned backwards to form a buckling edge, the backrest frame is provided with a slot or an inserting seam corresponding to the buckling edge, the buckling edge is inserted into the slot or the inserting seam, and the backrest frame is clamped and fixed to the buckling edge through riveting.

The chair comprises a backrest structure, wherein the backrest structure comprises a backrest plate and a backrest frame used for supporting the backrest plate, the backrest plate is a plastic plate, the backrest frame is a metal frame, at least the upper edge of the backrest plate is turned backwards to form a buckling edge, the backrest frame is provided with a slot or an inserting seam corresponding to the buckling edge, the buckling edge is inserted into the slot or the inserting seam, and the backrest frame is clamped and fixed to the buckling edge through riveting.

Compared with the background technology, the technical scheme has the following advantages:

1. the buckling edge is inserted into the slot or the inserting seam, the whole buckling edge is riveted and fixed, the connecting area or the connecting length of the backrest plate and the backrest frame is greatly improved, and one or two independent points are not stressed, so that the backrest plate can be firmly installed on the backrest frame.

2. The back frame is deformed by riveting, the fastening edge is clamped and fixed in the slot or the slot, two sides of the fastening edge are stressed and stably clamped, the fastening edge is stable in structure and not easy to damage, and therefore the back frame has a better service life.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic perspective view of the chair of the present invention.

Fig. 2 is an exploded view of the backrest structure of the chair shown in fig. 1.

Fig. 3 is a cross-sectional view of the backrest structure of the chair shown in fig. 1.

Fig. 4 is a first structural variation of the backrest structure of the chair.

Fig. 5 is a second structural variation of the backrest structure of the chair.

Detailed Description

Referring to fig. 1, the chair is a foldable chair, which includes a backrest structure 10, a seat structure 20 and a support leg structure 30, and the connection manner between the three structures is the conventional structure, so the folding principle of the foldable chair will not be described.

Referring to fig. 1 to 3, the backrest structure 10 includes a backrest plate 12 and a backrest frame 14 for supporting the backrest plate, the backrest plate 12 is a plastic plate, the backrest frame 14 is a metal frame, such as an iron frame, at least an upper edge of the backrest plate 12 is folded back to form a fastening edge 121, the backrest frame 14 is provided with an insertion slit 141 corresponding to the fastening edge, the fastening edge 121 is inserted into the insertion slit 141, and the backrest frame 14 is fastened and fixed to the fastening edge 121 by riveting. That is, during assembly, the fastening edge 121 is inserted into the insertion slit 141, and then, the fastening edge 121 is riveted, so that the backrest frame 14 is deformed and the fastening edge 121 is fixed, and thus the fastening edge 121 cannot be pulled out from the insertion slit 141.

In this embodiment, the lower portion of the backrest frame 14 is substantially common to the support leg structure 30, which is also common in the prior art, i.e., the lower end of the backrest frame 14 is supported on the ground. Of course, the back frame 14 may be attached to the seat structure 20 or to the support leg structure 30.

Preferably, the outer edge of the back plate 12 is folded back over to form a buckle edge 121. Thus, the edge 121 is not only used to connect with the backrest frame, but also the edge itself can play a role of increasing the strength around the backrest plate 12, so that the backrest plate 12 has better strength and stability. It will be understood that the full circle outer edge described herein forms the hem 121, but also includes structures that leave a formed gap at the corner.

Preferably, the backrest frame 14 includes a left connecting pipe 142, a right connecting pipe 143, and an upper connecting pipe 144, which are bent from a single metal pipe to form a U-shape, and it is well understood that the lower portions of the left connecting pipe 142 and the right connecting pipe 143 are portions of the supporting legs. The insertion slits 141 are formed at the connection portions of the upper connection pipe 144, the left connection pipe 142, and the upper connection pipe 144, and the connection portions of the right connection pipe 143, and the upper connection pipe 144, and the fastening edges 121 corresponding to the upper edge, the left edge, and the right edge of the backboard 12 are inserted into the insertion slits 141.

Preferably, the back board 12 is in an arc shape with a concave middle part, so that the pressure bearing capacity of the back board 12 can be greatly improved, and the structural design enables the back board 12 to be a plastic-absorbing board, so that the use requirement can be met. Specifically, the thickness of the plastic suction plate is only about 1mm, the plastic suction plate is made into a concave arc shape, and the strength is greatly improved after the edge is turned over to form the buckle edge 121, and moreover, the inserting seam 141 on the backrest frame 14 is matched with the riveting process, and meanwhile, the buckle edge 121 can be firmly limited, so that the manufacturing cost of the backrest frame 14 is low, the weight of the backrest structure 10 is reduced, the weight of the chair is reduced on the premise of meeting the performance requirements, and the chair has good market competitiveness.

The backrest frame 14 is not necessarily a circular tube, but as a modification of the backrest structure, referring to fig. 4, the cross section of the backrest frame 14 may be other shapes as long as the buckle edge 121 of the backrest plate 12 can be clamped and fixed. In addition, in the structure of fig. 4, the back frame 14 is not provided with the insertion slot, but is provided with the insertion slot 145, and the fastening edge 121 is placed in the insertion slot 145 and then is riveted to fix the fastening edge 121.

Referring to fig. 5, as a second variation of the backrest structure, the backrest frame 14 further includes a reinforcing tube 146, two ends of the reinforcing tube 146 are respectively connected to a connection portion between the left connecting tube 142 and the upper connecting tube 144 and a connection portion between the right connecting tube 143 and the upper connecting tube 144, the reinforcing tube 146 is also provided with an insertion slit 141 (of course, the insertion slit may be replaced by an insertion slot of fig. 4), and when the outer edge of the whole backrest plate 12 is turned over backward to form the fastening edge 121, the fastening edge 121 corresponding to the lower edge of the backrest plate 12 is inserted into the insertion slit 141 of the reinforcing tube 146. The reinforcing tube 146 not only improves the strength of the backrest frame 14, but also supports the lower edge of the backrest plate 12 and fixes the buckle edge 121 on the lower edge of the backrest plate 12, so that the whole structure is firmer.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.

Claims

1. Chair back structure, including the back board with be used for supporting the back frame of back board, the back board is the plastic slab, the back frame is metal frame, its characterized in that: at least the upper edge of the backrest plate is folded backwards to form a buckling edge, the backrest frame is provided with a slot or an inserting seam corresponding to the buckling edge, the buckling edge is inserted into the slot or the inserting seam, and the backrest frame is clamped and fixed to the buckling edge through riveting.

2. The chair back structure of claim 1, wherein: the outer edge of the whole circle of the back board is turned backwards to form a buckling edge.

3. The chair back structure according to claim 1 or 2, wherein: the back frame includes left connecting pipe, right connecting pipe and goes up the connecting pipe, and left connecting pipe, right connecting pipe and go up the connecting pipe and be by a tubular metal resonator bending type U shape, slot or slotting attachment set up go up the connecting part of connecting pipe, left connecting pipe and last connecting pipe and the connecting part of right connecting pipe and last connecting pipe, the knot limit that border, left side border and right side border correspond on the back board insert in the middle of slot or slotting attachment.

4. The chair back structure of claim 3, wherein: the back frame still includes the reinforced pipe, the both ends of reinforced pipe are connected respectively in the position of being connected of left connecting pipe and last connecting pipe and the position of being connected of right connecting pipe and last connecting pipe, also set up slot or slotting joint on the reinforced pipe, the outer border of the whole circle of back board is all turned over towards the back and is rolled over under the condition that forms the knot limit, under the back board along the corresponding knot limit insert in the slot or the slotting joint of reinforced pipe.

5. The chair back structure of claim 1, wherein: the back board is in an arc shape with a concave middle part.

6. The chair back structure of claim 5, wherein: the back board is a plastic-absorbing board.

7. Chair, including back structure, its characterized in that: the backrest structure is as claimed in any one of claims 1 to 6.

8. The chair according to claim 7, wherein: the chair is foldable.