CN116602514A

CN116602514A - Chair and integrally formed chair back

Info

Publication number: CN116602514A
Application number: CN202210116965.1A
Authority: CN
Inventors: 杨登任
Original assignee: Ketong Enterprise Co ltd
Current assignee: Ketong Enterprise Co ltd
Priority date: 2022-02-08
Filing date: 2022-02-08
Publication date: 2023-08-18

Abstract

The invention discloses a chair, the chair back of which comprises a frame, two supporting feet and a supporting piece. The two support legs are joined to the frame by injection molding. The bearing piece is connected with the bottom frame part of the frame and the two side frame parts connected with the opposite ends of the bottom frame part in an injection molding mode so as to be supported by a user. The hardness of the bearing piece is lower than that of the frame, and the hardness of the frame is lower than that of the supporting foot. Thus, the chair back formed integrally can be formed by the parts with different hardness.

Description

Chair and integrally formed chair back

Technical Field

The invention relates to a chair back structure, in particular to a chair and an integrally formed chair back.

Background

The existing integrally formed chair back is mostly made of single material through injection molding. However, such chair backs are often made of a material that is generally stiffer and less resilient and flexible in order to maintain good support, resulting in some degree of sacrifice in the comfort of the user in supporting the chair back.

Therefore, how to manufacture the chair back by integrally forming materials with different hardness is an issue to be overcome at present.

Disclosure of Invention

Therefore, one of the objectives of the present invention is to provide a chair and an integrally formed chair back, which can be provided with at least two parts with different hardness by the design of the process and the selection and the allocation of the material proportion.

Another object of the present invention is to provide a chair and an integrally formed chair back thereof, wherein the chair back can support a support piece made of a softer (or more flexible) material by a frame made of a harder material and can be supported by a user.

The invention provides an integrally formed chair back according to one embodiment, comprising: the frame comprises a bottom frame part, two side frame parts connected with two opposite ends of the bottom frame part, and an accommodating space formed by the bottom frame part and the two side frame parts together; two supporting feet which are jointed with the frame in an injection molding mode, wherein the hardness of the two supporting feet is higher than that of the frame; and the bearing piece is arranged in the accommodating space and is connected with the bottom frame part and the two side frame parts in an injection molding mode, the bearing piece is used for a user to bear, and the hardness of the bearing piece is lower than that of the frame.

In some embodiments, the frame and the support feet are the same material but in different proportions.

In some embodiments, the frame comprises nylon and glass fiber, the glass fiber being present in an amount of 7 to 30 weight percent.

In some embodiments, the material of the support leg comprises nylon and glass fiber, and the content of the glass fiber is 7-50 weight percent.

In some embodiments, the material of the bearing sheet is nylon or polyether thermoplastic polyurethane (Thermoplastic Polyurethane, TPU).

In some embodiments, the first inner sides of the two side frame portions facing the supporting piece are respectively provided with an extension portion, the extension directions of the two extension portions are opposite, the opposite second inner sides of the supporting piece facing the two side frame portions are respectively provided with a notch, the two notches correspond to the two extension portions, and the positions of the extension portions and the notches correspond to the position of the lower back of the user.

In some embodiments, the extension is provided with at least one first vent.

In some embodiments, the backup pad is provided with at least one second vent.

In some embodiments, the end surfaces of the two supporting legs far away from the end of the frame are respectively provided with a fixing groove for inserting a seat.

In addition, the invention also provides a chair according to one embodiment, which comprises the chair back and a chair seat connected with the two supporting feet of the chair back.

Drawings

In order to more clearly illustrate the technical solutions of the present invention, the following brief description of the drawings is given for the purpose of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without the need for inventive work for a person skilled in the art.

FIG. 1 is a schematic view of a chair back according to one embodiment of the invention;

figure 2 is a schematic view of a chair according to one embodiment of the invention.

Symbol description

1 chair back

2 chair seat

3 chair

10 frame

11 side frame part

12 bottom frame portion

13 first inner side surface

14 first inner bottom surface

15 extension part

16 first air holes

20 supporting leg

21 fixing groove

30 bearing piece

31 second inner side surface

32 second inner bottom surface

33 recess

34 second ventilation holes

Plug-in component

S: accommodation space

Detailed Description

The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 and 2, a chair back 1 according to an embodiment of the present invention is adapted to be assembled to a seat 2 to form a chair 3. The chair back 1 comprises a frame 10, two support legs 20 and a support plate 30.

The frame 10 is integrally formed and may include two side frame portions 11 and a bottom frame portion 12. The two side frame parts 11 are respectively positioned at two opposite sides of the chair back 1 and two opposite ends of the bottom frame part 12. Opposite ends of the bottom frame portion 12 are respectively connected to two side frame portions 11. The two side frame portions 11 and the bottom frame portion 12 together form an accommodation space S. The material of the frame 10 includes, but is not limited to, nylon (such as, but not limited to, PA 66) and fiberglass, and the glass fiber content of the frame 10 is 7-30 weight percent, such as, but not limited to, 10, 16, 20, 24 or 28 weight percent.

The two support legs 20 are joined to the frame 10 by injection molding. Specifically, the two supporting legs 20 are also respectively located at two opposite sides of the chair back 1, and each supporting leg 20 is formed at the joint of the side frame 11 and the bottom frame 12 on the same side. Each support leg 20 is provided with a fixing groove 21 recessed in the end surface of the end far from the frame 10 for inserting the plug-in P of the seat 2. The support feet 20 have a higher stiffness than the frame 10. The material of the support leg 20 includes nylon (such as PA66, but not limited to) and fiberglass, and the content of fiberglass of the support leg 20 is 7-50 weight percent, such as 20, 30, 35, 40 or 45 weight percent, but not limited to. Thus, the support feet 20 are configured to support the entire seat back 1 and are removably assembled to the seat 2. The supporting leg has better chemical property, dimensional stability, heat resistance and aging resistance even the fatigue resistance can be improved by 2.5 times compared with the supporting leg without glass fiber by matching 30 weight percent of glass fiber in 70 weight percent of nylon. And the higher the glass fiber content of the support foot, the higher the hardness of the support foot.

The receiving piece 30 is integrally formed by injection molding and is joined to the side frame portions 11 and the bottom frame portion 12 of the frame 10 so as to be positioned in the accommodation space S. Specifically, the bearing sheet 30 has two opposite second inner side surfaces 31 and one second inner bottom surface 32 connecting the two second inner side surfaces 31. The two second inner sides 31 of the bearing piece 30 respectively engage the two first inner sides 13 of the side frame 11 of the frame 10. The second inner bottom surface 32 of the bearing piece 30 is engaged with a first inner bottom surface 14 of the bottom frame 12 of the frame 10. The first inner bottom surface 14 of the bottom frame portion 12 connects the two first inner side surfaces 13 of the side frame portions 11. Thus, the support plate 30 can be supported by the frame 10 for support by a user's back. The bearing sheet 30 may be selected from a material having a lower stiffness but a higher tensile strength and elasticity than the frame 10, such as, but not limited to, nylon (e.g., but not limited to, PA 66), thermoplastic polyurethane, or a combination thereof. Therefore, when the body of the user is supported by the support piece 30, the support piece 30 is slightly deformed by the force, so as to slightly cover the back of the user, thereby supporting the back of the user and providing a proper cushioning effect. Therefore, the device can be more in accordance with the ergonomic design, and the comfort of a user in riding is improved.

Furthermore, in the present embodiment or some embodiments, the first inner side 13 of each side frame 11 may extend out of one extension 15. The two extensions 15 extend in opposite directions. The two second inner sides 31 of the support plate 30 are each provided with a recess 33. The two recesses 33 correspond to the two extensions 15, respectively. Since the two extending portions 15 have a hardness higher than that of the surrounding bearing piece 30 and the positions of the two extending portions 15 correspond to the positions of the two sides of the lower back of the user, the supporting effect on the lower back of the user can be enhanced.

In the present embodiment or some embodiments, at least one of the two side frame parts 11 may be provided with at least one first ventilation hole 16. For example, the extending portions 15 of the two side frame portions 11 each have a plurality of first ventilation holes 16. Thereby, the ventilation property of the seatback 1 at the lower back can be enhanced.

In this embodiment or some embodiments, the bearing plate 30 may be provided with a grid structure having a plurality of second ventilation holes 34. The grid structure can make the bearing piece 30 more elastic and cushioning. The second ventilation holes 34 of the grid structure are distributed at the upper back and the lower back of the chair back 1, so that the ventilation property of the chair back 1 in the area corresponding to the positions of the upper back and the lower back can be improved. However, the present invention is not limited thereto. In another embodiment, the leaning piece 30 can be changed to have only one second ventilation hole 34.

Although the two support legs 20 of the above embodiments are each provided with a fixing slot 21 for the insertion of the insert P of the seat 2, the present invention is not limited to this engaging embodiment. In other embodiments, the two support legs 20 may be replaced by inserts for insertion into the two fixed slots of the seat 2.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the invention.

Claims

1. An integrally formed chair back, comprising:

the frame comprises a bottom frame part, two side frame parts connected with two opposite ends of the bottom frame part, and an accommodating space formed by the bottom frame part and the two side frame parts together;

two supporting feet which are jointed with the frame in an injection molding mode, wherein the hardness of the two supporting feet is higher than that of the frame; a kind of electronic device with high-pressure air-conditioning system

The bearing piece is arranged in the accommodating space and is connected with the bottom frame part and the two side frame parts in an injection molding mode, the bearing piece is used for a user to bear, and the hardness of the bearing piece is lower than that of the frame.

2. The integrally formed chair back of claim 1, wherein: the frame and the two support feet are of the same material but in different proportions.

3. The integrally formed chair back of claim 1, wherein: the frame is made of nylon and glass fiber, and the content of the glass fiber is 7-30 weight percent.

4. The integrally formed chair back of claim 1, wherein: the material of the supporting leg comprises nylon and glass fiber, and the content of the glass fiber is 7-50 weight percent.

5. The integrally formed chair back of claim 1, wherein: the material of the bearing piece is nylon or polyether thermoplastic polyurethane.

6. The integrally formed chair back of claim 1, wherein: the first inner side surfaces of the two side frame parts facing the bearing piece are respectively provided with an extension part, the extension directions of the two extension parts are opposite, the opposite second inner side surfaces of the bearing piece facing the two side frame parts are respectively provided with a notch, the two notches correspond to the two extension parts, and the positions of the extension parts and the notches correspond to the position of the lower back of the user.

7. The integrally formed chair back of claim 1, wherein: the extension portion is provided with at least one first ventilation hole.

8. The integrally formed chair back of claim 1, wherein: the bearing piece is provided with at least one second ventilation hole.

9. The integrally formed chair back of claim 1, wherein: the end faces of the two supporting legs far away from one end of the frame are respectively provided with a fixing groove, and the fixing grooves are used for inserting a seat.

10. A chair, characterized in that: a seat comprising a seat back as in claim 1 and the two support feet connecting the seat back.