Folding chair and plastic uptake seat plate supporting mold frame thereof

Abstract

The utility model discloses a folding chair and a blister seat plate supporting mould frame thereof, the supporting mould frame comprises a supporting frame, a blister seat plate comprises a seat panel and side edges formed by extending downwards from the peripheral edges of the seat panel, the supporting frame is attached to the inner sides of the side edges, and the blister seat plate is arranged on the supporting frame. The supporting mold frame further comprises one or more supporting top pieces connected to the inner side of the supporting frame, the plastic uptake seat plate covers the supporting top pieces, the supporting top pieces are supported at the positions, close to the peripheral edge part, of the bottom face of the seat panel, or the supporting top pieces are supported at the positions, on the left side edge part and the right side edge part, of the bottom face of the seat panel, and the plastic uptake seat plate covers the supporting top pieces. Or the supporting top piece is supported at the positions, close to the corner part, of the left side edge and the right side edge of the bottom surface of the seat panel. The supporting top piece is used for supporting the periphery of the seat panel of the plastic uptake seat plate, at least the left side and the right side or the positions, close to the corners, of the left side and the right side, the strength and the deformation resistance of the seat panel of the plastic uptake seat plate on the side edge positions can be effectively improved, and therefore the bearing capacity of the folding chair is improved.

Description

Technical Field

[0001] The utility model relates to a folding chair and a seat plate supporting mold frame thereof, in particular to a blister seat plate supporting mold frame. Background Art

[0002] Folding chairs are classified by material, mainly into wooden folding chairs, metal folding chairs and plastic steel folding chairs. Plastic steel folding chairs are lighter and more cost-effective, so they are widely used in life. Plastic steel folding chairs use plastic parts for the seat and backrest, and metal parts for the skeleton support structure. The strength of plastic parts is obviously weaker than that of metal parts. Therefore, the load-bearing capacity of plastic steel folding chairs mainly tests the strength of the seat.

[0003] In order to ensure that the strength of the plastic seat plate meets the requirements, it is usually adopted to increase the thickness of the seat plate and set reinforcing ribs at the bottom of the seat plate to improve the bending resistance of the seat plate. Since the early plastic seat plates were produced by injection molding, increasing the thickness or setting reinforcing ribs can be easily achieved by changing the mold, but it will inevitably greatly increase the weight and cost of the seat plate.

[0004] At present, the profit of plastic-steel folding chairs is extremely limited, and the market competition pressure is very great. Only products with light weight or lower cost can be competitive in the market. To this end, the R&D personnel use the blister molding process to produce the seat plate. The seat plate produced by blister molding is very thin, and the cost and weight can be greatly reduced, but the problem of insufficient strength of the seat plate is revealed. The R&D personnel have invested a lot of energy in improving the strength of the blister seat plate. Finally, they proposed to use glue to bond the blister seat plate to the support frame to enhance the bending resistance of the seat plate, and to extend the support frame to fix the edge of the blister seat plate to enhance the bending resistance of the seat plate. Both have achieved very good results. On the premise of meeting the strength requirements, the weight and cost are lower than those of products produced by injection molding.

[0005] However, the pace of R&D personnel in continuously optimizing and improving plastic-steel folding chairs has not stopped. Consumers also have higher expectations and requirements for plastic-steel folding chairs, especially under the premise that the weight and cost are much lower than those of products produced by injection molding. They hope that the strength and deformation resistance of the seat plate can be comparable to those produced by injection molding. Utility Model Content

[0006] The utility model provides a folding chair and a blister seat support mold frame thereof, which improves the strength and anti-deformation ability of the seat. The technical solution adopted by the utility model to solve the technical problem is:

[0007] The blister seat support mold frame of a folding chair includes a support frame, the blister seat includes a seat panel and side edges extending downward from the four edges of the seat panel, the support frame is attached to the inner side of the side edges, and also includes one or more support top members connected to the inner side of the support frame, the blister seat covers the support top members, the support top members are supported on the bottom surface of the seat panel near the four edges, or the support top members are supported on the bottom surface of the seat panel at the left and right side edges, or the support top members are supported on the bottom surface of the seat panel at the left and right side edges near the corners.

[0008] A folding chair, comprising four leg tubes, a backrest and a blister seat panel, wherein the blister seat panel comprises a seat panel and side edges extending downward from the four edges of the seat panel, and further comprises a support mold frame, wherein the support mold frame comprises a support frame, wherein the support frame is abutted against the inner sides of the side edges, and further comprises one or more support top members connected to the inner sides of the support frame, wherein the blister seat panel covers the support top members, wherein the support top members are supported on the bottom surface of the seat panel near the four edges, or the support top members are supported on the bottom surface of the seat panel at the left and right side edges, or the support top members are supported on the bottom surface of the seat panel at the left and right side edges near the corner portions, and the support frame is abutted against the inner sides of the side edges.

[0009] Compared with the background technology, this technical solution has the following advantages:

[0010] The distance between the left and right sides of the blister seat plate is large, and the user can easily twist the position of the seat plate to the left and right sides when sitting on the seat plate. Therefore, the blister seat plate has weak points on the left and right sides of the seat panel. The present application connects a supporting top piece on the inner side of the supporting frame. The supporting top piece is used to support the seat panel of the blister seat plate all around, at least on the left and right sides or near the corners of the left and right sides. This can effectively improve the strength and deformation resistance of the seat panel of the blister seat plate at the side position, thereby improving the load-bearing capacity of the folding chair. In other words, when the thickness of the blister seat plate remains unchanged, a better load-bearing effect can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 A three-dimensional schematic diagram of a folding chair is shown.

[0013] Figure 2 Draws Figure 1 Another perspective schematic diagram of the folding chair shown.

[0014] Figure 3 Draws Figure 1 The cross-sectional view of the folding chair shown is along the AA line.

[0015] Figure 4 Draws Figure 3 An enlarged diagram of the circled area.

[0016] Figure 5 Draws Figure 1 The schematic diagram of the folding chair shown is a schematic diagram of the blister seat panel being disassembled.

[0017] Figure 6 Draws Figure 1 Schematic diagram of the structural deformation of the blister seat support mold frame of the folding chair shown. DETAILED DESCRIPTION

[0018] Please refer to Figures 1 to 5 The folding chair comprises four leg tubes 10, a backrest board 20, a blister seat board 30 and a support mold frame 40. The blister seat board 30 is installed on the support mold frame 40. The four leg tubes 10 are arranged in two groups, symmetrically arranged on the left and right sides of the support mold frame 40, and support the support mold frame 40. The backrest board 20 is installed between the leg tubes extending upward on the left and right sides. The positions and connection relationships of the leg tubes, the backrest board, the blister seat board and the support mold frame can refer to the existing structure. The blister seat board 30 comprises a seat panel 32 and a side 34 extending downward from the four edges of the seat panel. The support mold frame 40 comprises a support frame 42. The support frame 42 is attached to the inner side of the side 34, that is, the support frame is attached to the inner side of the side. The positional relationship between the side and the support frame also belongs to the existing structure. The support mold frame 40 also includes a plurality of support top members 44 connected to the inner side of the support frame 42, and the support top members 44 are supported at positions near the corners on the left and right sides of the bottom surface of the seat panel 32. In this embodiment, there are four support top members 44, which are respectively supported at positions near the corners on the front and rear ends of the left side of the bottom surface of the seat panel 32 and the front and rear ends of the right side of the bottom surface of the seat panel 32. It can be understood that the support top members 44 can also be two and are respectively supported at positions near the left and right sides of the bottom surface of the seat panel 32 (such as Figure 6 As shown, the supporting top member is longer and is used to support the side of the seat panel). The supporting top member 44 can also be supported on the bottom surface of the seat panel 32 near the peripheral edge portion. In this case, the supporting top member can be a circle structure.

[0019] Preferably, the support frame 42 and the support top member 44 are connected together by rivets 50 for installing the folding chair leg tube 10. The rivets are used to connect the leg tube to the support frame and belong to the existing structure. The rivets 50 also pass through the side edge 34 of the blister seat plate. In this way, the support top member 44 is directly installed using the rivets 50 on the leg tube 10, and the structure is simpler. It can be understood that if the support top member 34 is not installed using rivets, the support top member 44 can also be locked on the support frame 42 by screws.

[0020] Preferably, the support top member 44 is a plastic member, and the support top member 44 is supported on the left and right sides of the bottom surface of the seat panel 32 of the blister seat plate, which can effectively reduce the inner cantilever of the seat plate, thereby effectively improving the strength of the seat plate. The use of plastic members can meet the requirements and is light in weight. Further preferably, the portion of the support top member 44 used to support the seat panel is a hollow structure.

[0021] Preferably, the plastic seat plate 30 is provided with slide bars 36 on the outer sides of the left and right sides, and the rivets 50 connect the folding chair leg tube 10, the slide bars 36, the plastic seat plate side 34, the support frame 42, and the support top member 44. The slide bars are installed so that the support frame 42 and the leg tube 10 have the ability to flip and give way when the folding chair is folded, and the slide bars are also an existing structure.

[0022] Preferably, the side edge 34 of the blister seat plate 30 is provided with an outwardly expanding reinforcing step 38, and the upper end of the support frame 42 forms a pressure-bearing table 421, and the pressure-bearing table 421 supports the reinforcing step 38. Therefore, the support frame not only surrounds the inner side of the side edge, but also supports the side edge, further improving the strength of the blister seat plate.

[0023] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the contents of the specification should still fall within the scope covered by the present invention.

Claims

1. A blister seat support mold frame of a folding chair, comprising a support frame, the blister seat comprising a seat panel and side edges extending downward from the four edges of the seat panel, the support frame being attached to the inner side of the side edges, characterized in that: It also includes one or more supporting top members connected to the inner side of the supporting frame, the blister seat panel covers the supporting top members, the supporting top members are supported on the bottom surface of the seat panel near the four peripheral edges, or the supporting top members are supported on the bottom surface of the seat panel at the left and right side edges, or the supporting top members are supported on the bottom surface of the seat panel at the left and right side edges near the corners.

2. The blister seat support mold frame of the folding chair according to claim 1, characterized in that: The support frame and the support top piece are connected together by rivets used for installing folding chair leg tubes, and the rivets simultaneously pass through the side edges of the blister seat plate.

3. The blister seat support mold frame of the folding chair according to claim 1, characterized in that: The supporting top piece is locked on the supporting frame.

4. The blister seat support mold frame of the folding chair according to claim 1, characterized in that: The supporting top member is a plastic member.

5. The blister seat support mold frame of the folding chair according to claim 4, characterized in that: The portion of the supporting top member used for supporting the seat panel is a hollow structure.

6. The blister seat support mold frame of the folding chair according to claim 1, characterized in that: The outer side surfaces of the left and right sides of the blister seat plate are provided with sliding rods, and the folding chair leg tubes, the sliding rods, the side edges of the plastic seat plate, the supporting frame and the supporting top piece are connected together by rivets.

7. The blister seat support mold frame of the folding chair according to claim 1, characterized in that: The side of the blister seat plate is provided with an outwardly expanding reinforcing step, and the upper end of the support frame forms a pressure-bearing table surface, and the pressure-bearing table surface supports the reinforcing step.

8. The blister seat support mold frame of the folding chair according to any one of claims 1 to 7, characterized in that: There are four supporting top members, which are respectively used to support the left and right sides of the seat panel near the corners.

9. The blister seat support mold frame of the folding chair according to any one of claims 1 to 7, characterized in that: There are two supporting top members, which are respectively used to support the left and right sides of the seat panel.

10. A folding chair, comprising four leg tubes, a backrest and a blister seat, wherein the blister seat comprises a seat panel and side edges extending downward from the four edges of the seat panel, characterized in that: It also comprises a supporting mold frame according to any one of claims 1 to 7, wherein the supporting frame is attached to the inner side of the side edge.

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