CN219229425U

CN219229425U - Stable combined structure of carbon fiber chair

Info

Publication number: CN219229425U
Application number: CN202222753830.4U
Authority: CN
Inventors: 罗明丰; 尚武林; 毕然; 刘浩; 董海涛; 崔文宇
Original assignee: Lianyungang Shenying Carbon Fiber Bicycle Co ltd
Current assignee: Lianyungang Shenying Carbon Fiber Bicycle Co ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-06-23
Anticipated expiration: 2032-10-19

Abstract

A stable combined structure of a carbon fiber chair consists of a chair back, a chair surface, chair legs and a cross brace; the two side vertical pipes of the chair back are female ends and are connected with the bulges at the two sides of the chair surface in an inserting way, and the middle leaning plate of the chair back is a male end which is matched with the groove of the chair surface; the four chair legs are connected with the chair surface in the same way, the vertical pipes of the chair legs are connected with the bulges of the chair surface in an inserting way, and the fan-shaped bulges of the chair legs are also matched with the grooves of the chair surface; two ends of the cross brace are used as female ends and are connected with the bulges on the chair legs in an inserting manner to form a stable combined structure; compared with wood and plastic chairs, the chair has the advantages of good corrosion resistance and ageing resistance, good structural integrity, difficult movement, contribution to the exertion of the structural strength of the carbon fiber composite material, good durability of the connection strength, easy realization of the process, convenient modularized assembly line manufacture, high production efficiency and convenient large-scale popularization and application. The patent provides an efficient, robust and easy to implement manner of operation for complex connection structures.

Description

Stable combined structure of carbon fiber chair

Technical Field

The utility model relates to the technical field of new material application, in particular to a stable combined structure of a carbon fiber chair.

Background

The carbon fiber composite material is used as a high-performance structural material with high specific strength and high specific modulus, and the structural member manufactured by the carbon fiber composite material has the characteristics of strong structural designability, simple process, obvious weight reduction effect and the like, and is widely applied to the fields of military industry, aerospace and the like. The chair is used as a traditional object, is closely related to the life of people, is mostly made of materials such as wood, metal, plastic and the like, and is difficult to be refreshed in the aspects of appearance, weight, strength and the like. The carbon fiber can well coordinate the design factors, and can provide the chair with higher strength, rigidity and dimensional stability while meeting the requirements of extremely light weight and attractive appearance of the chair, so that the problems that the metal chair is easy to rust, the wooden chair is easy to corrode, the plastic chair is easy to age and the like are avoided.

Because of the complex structure of the chair, the carbon fiber chair is difficult to machine and form once, and the same is difficult to realize the full composite material and extremely light weight, so that the overall strength and rigidity of the chair are ensured, the process is easy to realize, the batch production is convenient, and the like.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a stable combined structure of a carbon fiber chair based on a stable combined structure aiming at the defects of the prior art.

The utility model aims to solve the technical problems by the following technical scheme, and the carbon fiber chair stable combined structure is characterized in that:

the middle leaning plate of the chair back is formed by combining a male end with a groove of the chair surface; the four chair legs are connected with the chair surface in the same way, the vertical pipes of the chair legs are connected with the bulges of the chair surface in an inserting way, and the fan-shaped bulges of the chair legs are also matched with the grooves of the chair surface; two ends of the cross brace are used as female ends and are connected with the bulges on the chair legs in an inserting manner to form a stable combined structure;

the technical problem to be solved by the utility model can be further solved by the following technical scheme that the positions connected in a plugging manner are designed with yarn wrapping positions, the outer diameter of the yarn wrapping positions is smaller than the outer diameter of the standpipe main body by 1-2 mm, and the length is 10-50 mm.

The technical problem to be solved by the utility model can be further solved by the following technical scheme, wherein the wall thickness of each part of the carbon fiber chair is between 0.5 and 5mm.

The technical problem to be solved by the utility model can be further solved by the following technical scheme that the wrapping yarn position needs to be additionally formed with a carbon fiber reinforcing layer, wherein the thickness of the reinforcing layer is 0.5-1 mm, and the length of the reinforcing layer is about 10-50 mm.

The technical problem to be solved by the utility model can be further solved by the following technical scheme that the connection is realized by connecting the epoxy structural adhesive together, wherein the epoxy structural adhesive can be a bi-component normal-temperature curing adhesive or a single-component high-temperature curing adhesive.

Compared with the prior art, the utility model does not relate to the application of metal parts, does not generate the rust problem of metal chairs, has good corrosion resistance and aging resistance compared with wooden and plastic chairs, has good structural integrity, is not easy to move, is favorable for exerting the structural strength of the carbon fiber composite material, has good connection strength durability, is easy to realize the process, is convenient for the modularized assembly line production, has high production efficiency, and is convenient for large-scale popularization and application. The patent content has a certain demonstration meaning for the composite material of the traditional furniture, and provides an efficient, stable and easy-to-implement operation mode for the complex connecting structure.

Drawings

FIG. 1 is a block diagram of a carbon fiber chair;

FIG. 2 is a general view of a carbon fiber chair assembly;

FIG. 3 is a diagram I of a carbon fiber chair combination structure;

FIG. 4 is a diagram II of a carbon fiber chair combination structure;

FIG. 5 is a diagram III of a carbon fiber chair combination structure;

wherein:

1-back, 2-seat, 3-legs and 4-cross braces.

Description of the embodiments

The following further describes the specific technical solutions of the present utility model, so that the purpose, technical solutions and advantages of the embodiments of the present utility model will be more apparent to those skilled in the art to further understand the present utility model, and the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, not all embodiments, but not limitations on the claims thereof. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

A stable combination structure of a carbon fiber chair comprises a chair back 1, a chair surface 2, chair legs 3 and a transverse support 4. The two side vertical pipes of the chair back are female ends and are connected with the bulges at the two sides of the chair surface in an inserting way, and the middle leaning plate of the chair back is a male end which is matched with the groove of the chair surface; the four chair legs are connected with the chair surface in the same way, the vertical pipes of the chair legs are connected with the bulges of the chair surface in an inserting way, and the fan-shaped bulges of the chair legs are also matched with the grooves of the chair surface; the two ends of the cross brace are used as female ends and are connected with the bulges on the chair legs in an inserting way.

The connection is connected together through epoxy structural adhesive, and the epoxy structural adhesive can be bi-component normal-temperature curing adhesive or single-component high-temperature curing adhesive;

the local parts of the splicing structure are designed with yarn wrapping positions, the outer diameter of the yarn wrapping positions is slightly smaller than the outer diameter of the main body by 1-2 mm, and the length of the yarn wrapping positions is about 10-50 mm;

the wall thickness of each part of the carbon fiber chair is between 0.5 and 5 mm;

the wrapping yarn position needs an additional formed carbon fiber reinforcing layer, the thickness of the reinforcing layer is 0.5-1 mm, and the length of the reinforcing layer is about 10-50 mm, so that the purpose of further increasing the connection strength is achieved.

The first step: manufacture of the respective composite parts

1) And (3) manufacturing a chair back: the carbon fiber prepreg is adopted as a main raw material, and is integrally manufactured through the procedures of cutting, coiling, forming, processing and the like, wherein the middle part adopts a solid compression molding process, and the rod pieces at the two sides adopt a compression molding process of an internal compression air bag;

2) And (3) manufacturing a chair surface: the carbon fiber prepreg is adopted as a main raw material, and is integrally manufactured through the procedures of cutting, coiling, forming, processing and the like, wherein the middle part of the chair surface adopts a co-curing compression molding process of a sandwich material, and the rest part is wholly solid compression molding process;

3) And (3) manufacturing chair legs: the method is characterized in that carbon fiber prepreg is adopted as a main raw material, and is integrally manufactured through the procedures of cutting, coiling, forming, processing and the like, wherein a main rod part adopts a compression molding process of a pressurizing air bag, and the rest part adopts a full solid compression molding process;

4) And (3) manufacturing a cross brace: the carbon fiber prepreg is adopted as a main raw material and is integrally manufactured through the procedures of cutting, coiling, forming, processing and the like, and the main body is entirely manufactured through a compression molding process of a pressurizing air bag;

and a second step of: the chair back, the chair surface, the chair legs and the cross braces manufactured in the first step are spliced and glued together under the action of a gluing jig;

and a third step of: winding carbon fiber prepreg outside the wrapping yarn position (local diameter reduction position) of the glued position for re-solidification forming, so that the outer diameter of the diameter reduction position is basically consistent with the main body;

fourth step: and (3) coating, namely performing operations such as sand blasting, repairing, primer spraying, finish paint spraying, labeling and the like on the surface of the product, so as to finish the whole product manufacturing process.

The carbon fiber prepreg can be one or a combination of carbon fiber fabric prepreg and carbon fiber unidirectional prepreg;

the sandwich material can be any one of PMI, PU, PVC, PET, balsa wood, epoxy self-expansion film, aluminum honeycomb, aramid paper honeycomb and the like;

the gluing process adopts a bi-component normal-temperature curing epoxy adhesive or a single-component high-temperature curing epoxy adhesive;

the carbon fiber prepreg is not limited to the prepreg made of carbon fibers, and any one or combination of glass fibers, quartz fibers, basalt fibers, aramid fibers and flax fibers can be used;

when the sandwich material is co-cured with the carbon fiber prepreg, a layer of epoxy resin membranous adhesive or a doctor-blading single-component high-temperature curing epoxy resin adhesive needs to be wrapped outside, and the specification of the membranous adhesive is 100-300 g/m ² The thickness of the scraping adhesive is 0.2-0.5 mm.

The utility model discloses a stable combined structure of a carbon fiber chair, which has the advantages of simple process, convenient modularized assembly line manufacture, high production efficiency, convenient large-scale popularization and application, and is particularly suitable for mass manufacture of complex structural members.

Claims

1. A stable composite structure of carbon fiber chair, its characterized in that:

the middle leaning plate of the chair back is formed by combining a male end with a groove of the chair surface; the four chair legs are connected with the chair surface in the same way, the vertical pipes of the chair legs are connected with the bulges of the chair surface in an inserting way, and the fan-shaped bulges of the chair legs are also matched with the grooves of the chair surface; the two ends of the cross brace are used as female ends and are connected with the bulges on the chair legs in an inserting way, so that a stable combined structure is formed.

2. The carbon fiber chair stabilization combination according to claim 1, wherein: the positions connected in an inserting mode are all designed with yarn wrapping positions, the outer diameter of the yarn wrapping positions is smaller than the outer diameter of the standpipe main body by 1-2 mm, and the length is 10-50 mm.

3. The carbon fiber chair stabilization combination according to claim 1, wherein: the wall thickness of each part of the carbon fiber chair is between 0.5 and 5mm.

4. The carbon fiber chair stabilization combination according to claim 2, wherein: the wrapping yarn position needs to be additionally provided with a carbon fiber reinforcing layer, the thickness of the reinforcing layer is 0.5-1 mm, and the length is about 10-50 mm.