CN213030316U

CN213030316U - Sofa backrest

Info

Publication number: CN213030316U
Application number: CN202020726033.5U
Authority: CN
Inventors: 李晓鸿; 陈伟明
Original assignee: Remacro Machinery and Technology Wujiang Co Ltd
Current assignee: Remacro Machinery and Technology Wujiang Co Ltd
Priority date: 2020-05-06
Filing date: 2020-05-06
Publication date: 2021-04-23
Anticipated expiration: 2030-05-06

Abstract

The utility model relates to a sofa backrest, make and have the main part of inside cavity including adopting the blowing, be provided with in the main part and be used for providing back chamber, the reinforcing in deformation space for the elastic component the rib and a plurality of connecting pieces that are used for connecting the elastic component of main part bearing capacity. The sofa backrest provided by the utility model is manufactured by adopting the blow molding process, and further has the advantages of low weight, high production speed and less required manufacturing raw materials compared with the traditional solid sofa backrest; the reinforcing part is arranged, so that the material is further saved, the weight of the backrest is reduced, and the strength is improved.

Description

Sofa backrest

Technical Field

The utility model relates to a sofa accessory technical field especially relates to a sofa backrest.

Background

Generally, a sofa is provided with a sofa backrest so that a person sitting on the sofa can lean on the sofa backrest, so the sofa backrest needs to be able to provide enough supporting force to support a person. In order to provide enough supporting force for the sofa backrest, in the prior art, the sofa backrest mostly adopts a solid sofa backrest with a wooden structure or an iron frame, and thus, the sofa backrest uses more materials, is heavy and is inconvenient to move; and the installation and manufacturing time is long, and the cost is high.

SUMMERY OF THE UTILITY MODEL

In order to overcome at least one of the defects of the prior art, the utility model provides a sofa backrest.

The utility model discloses a solve the technical scheme that its problem adopted and be:

the utility model provides a sofa backrest, includes the main part that adopts the blow molding to make and have inside cavity, be provided with in the main part and be used for providing the back chamber in deformation space, reinforcing for the elastic component the rib and a plurality of connecting pieces that are used for connecting the elastic component of main part bearing capacity.

The sofa backrest provided by the utility model is manufactured by adopting the blow molding process, and further has the advantages of low weight, high production speed and less required manufacturing raw materials compared with the traditional solid sofa backrest; the reinforcing part is arranged, so that the material is further saved, the weight of the backrest is reduced, and the strength is improved.

Further, the main part includes the main back body and set up in the side back body of main back body both sides, main back body and both sides back body are connected and are formed the back chamber, the rib set up in on the main back body, the connecting piece set up in on the side back body.

From this, constitute the main bearing part of main part through main back body and both sides back body to set up the rib on main back body, set up the connecting piece on the side back body, when satisfying this sofa back function and whole bearing capacity, further effectual reduction back weight, save material.

Furthermore, the lower ends of the two side back bodies are connected through a cross beam, and the cross beam and the main back body are separated from each other to form a material reducing cavity.

Therefore, the bearing capacity of the connection between the lower end of the side back body and the sofa underframe is enhanced through the cross beam, and the material consumption and the backrest weight are further reduced by utilizing the material reducing cavity.

Further, the cross beam is connected with the main back body through a reinforcing beam.

Therefore, the bearing capacity of the cross beam is enhanced through the reinforcing beam, and the stress deformation of the cross beam is avoided.

Further, the side back body is in a triangular shape with a narrow top and a wide bottom.

Therefore, under the condition of ensuring the whole bearing capacity of the side back body, the weight of the backrest is further reduced, and materials are saved.

Further, the reinforcing part is a plurality of protrusions and depressions arranged in the transverse direction.

Therefore, the transverse arranged bulges and the transverse arranged depressions are used as the reinforcing parts, so that the bearing capacity of the main body in the horizontal direction can be better enhanced.

Further, a plurality of the protrusions and depressions are arranged in a wave shape.

Thus, the wave-like arrangement of the protrusions and depressions can reduce the amount of raw materials while providing sufficient bearing capacity.

Further, the connecting piece is integrally formed with the main body.

Therefore, the connecting piece and the main body are integrally formed, so that the connecting strength of the connecting piece is improved, and the mounting steps are saved.

Furthermore, the main part is provided with an accommodating groove for accommodating the connecting piece, and the connecting piece is extended with a hook head for limiting the separation of the elastic piece.

From this, the connecting piece is located the holding tank, and when installation elastic component, the elastic component colludes and hangs on the connecting piece and be located the holding tank to avoid connecting piece and elastic component outwards outstanding, prevent connecting piece and elastic component hook from to sofa fabric.

Furthermore, a groove used for enhancing the tensile force of the elastic piece carried by the connecting piece is arranged on the main body corresponding to the connecting piece.

In the use of sofa, the connecting piece mainly bears the internal tension of elastic component, makes the main part chamber wall of this department produce the bending through the recess to increase the anti deformation strength of this department.

Furthermore, the lower ends of the two sides of the main body are provided with first prefabricated connecting grooves used for connecting the sofa underframe.

Further, the upper ends of the two sides of the main body are provided with second prefabricated connecting grooves.

Compared with the prior art, the utility model has the advantages of as follows:

the sofa backrest of the utility model is manufactured by adopting the blow molding process, and further has the advantages of low weight, high production speed and less required manufacturing raw materials compared with the traditional solid sofa backrest; the reinforcing part is arranged, so that the material is further saved, the weight of the backrest is reduced, and the strength is improved.

Drawings

Fig. 1 is a schematic structural view of a sofa backrest provided by the present invention;

FIG. 2 is an enlarged view of part A of FIG. 1;

FIG. 3 is a schematic view of the backrest of the sofa of FIG. 1 connected to the elastic member;

FIG. 4 is a schematic view of the connection between the connection member and the elastic member in FIG. 3;

fig. 5 is another schematic view of the sofa backrest according to the present invention;

fig. 6 is a sectional view of the backrest of the sofa shown in fig. 5.

Wherein the reference numerals are:

1. a main body; a back rest cavity; 11. a main back body; 111. a reinforcing portion; 12. a lateral back body; 121. a connecting member; 122. a first prefabricated connecting groove; 123. a second prefabricated connecting groove; 124. a groove; 125. Hooking the head; 126. accommodating grooves; 13. a cross beam; 14. a reinforcing beam; 15. a material reducing cavity; 16. a first connecting groove; 17. a second connecting groove; 18. a back rest cavity; 2. an elastic member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, back, outer and inner … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Referring to fig. 1 to 6, the utility model discloses a sofa backrest, including adopting the blow molding to make and have the main part 1 of inside cavity, be provided with on the main part 1 and be used for providing back chamber 18, the reinforcing in deformation space for elastic component 2 the reinforcement 111 and a plurality of connecting pieces 121 that are used for connecting elastic component 2 of main part 1 bearing capacity.

Because the sofa backrest is manufactured by adopting a blow molding process, the interior of the main body 1 is provided with a cavity, and further compared with the traditional solid sofa backrest, the sofa backrest has the advantages of low weight, high production speed and less required manufacturing raw materials; on the other hand, in order to ensure that the sofa backrest can provide sufficient supporting force for the sofa, the main body 1 is provided with the reinforcing part 111, the strength of the main body 1 is enhanced by the reinforcing part 111, so that the main body 1 is not easy to deform when being pressed by an external object, and the reinforcing part 111 further saves materials, reduces the backrest weight and improves the strength under the condition of ensuring that the main body 1 has sufficient supporting force.

Specifically, in this embodiment, the main body 1 includes a main back body 11 and side back bodies 12 disposed on two sides of the main back body 11, the main back body 11 and the two side back bodies 12 are connected to form the backrest cavity 18, the reinforcement portion 111 is disposed on the main back body 11, and the connection member 121 is disposed on the side back bodies 12. Wherein, the main back body 11 is substantially rectangular, the side back bodies 12 are substantially triangular with a narrow top and a wide bottom, and the two side back bodies 12 are formed by extending two opposite side edges of the main back body 11 to the seating surface of the sofa, so that the horizontal cross section of the main body 1 is substantially n-shaped, and the inner cavity of the n-shape is the backrest cavity 18, so that the open end of the backrest cavity 18 faces the seating surface of the sofa; the connecting piece 121 is arranged on one side of the side back body 12 close to the sofa seating surface, that is, the connecting piece 121 is located at the open end of the backrest cavity 18, when the elastic piece 2 is installed on the main body 1 through the connecting piece 121, the elastic piece 2 is located at one side of the open end of the backrest cavity 18, so that a certain deformation space is provided for the elastic piece 2 by using the backrest cavity 18; in the using process of the sofa, when a person sitting on the sofa leans against the backrest of the sofa, the person presses the elastic member 2 to perform elastic deformation, the elastic member 2 deforms towards the backrest cavity 18, the connecting member 121 receives the inward pulling force of the elastic member 2, so that the two side back bodies 12 press the main back body 11 inwards, and the reinforcing part 111 is arranged on the main back body 11.

Therefore, the main bearing part of the main body 1 is formed by the main back body 11 and the two side back bodies 12, the reinforcing part 111 is arranged on the main back body 11, and the connecting part 121 is arranged on the side back body 12, so that the backrest weight is further effectively reduced and the material is saved while the function and the integral bearing capacity of the sofa backrest are met.

Referring to fig. 1, in the present embodiment, since the side back bodies 12 are used as components connected to a sofa underframe, in order to enhance the bearing capacity and strength of the connection between the lower ends of the side back bodies 12 and the sofa underframe, the lower ends of the two side back bodies 12 are connected by a cross beam 13, the cross beam 13 is spaced apart from the main back body 11 to form a material reducing cavity 15, and the material reducing cavity 15 is used to further reduce the material consumption and the weight of the backrest.

In the present embodiment, since the cross member 13 is long, the cross member 13 is easily bent and deformed when it is subjected to compressive stress. In order to increase the bearing capacity of the cross beam 13 and avoid the deformation of the cross beam 13, a reinforcing beam 14 is connected between the middle of the cross beam 13 and the main back body 11.

Referring to fig. 1 and 6, in the present embodiment, the reinforcing portion 111 is a plurality of protrusions and depressions arranged in a wave shape, and preferably, the protrusions and depressions are disposed on one side of the main back body 11 close to the seating surface of the sofa. When the elastic element 2 generates inward pulling force to the two side back bodies 12, the protrusions and the depressions are transversely arranged, so that the vertical cross section of the main back body 11 has a curved surface, the horizontal bending strength of the main back body 11 is enhanced, and the bearing capacity of the main body 1 in the horizontal direction is enhanced; and the wave-like arrangement of the protrusions and the depressions can reduce the amount of raw materials while providing sufficient bearing capacity.

Preferably, the main back body 11, the two side back bodies 12, the cross beam 13 and the reinforcing beam 14 are integrally blow-molded.

Referring to fig. 1 to 4, in the present embodiment, the connecting member 121 is integrally formed with the main body 1. Specifically, the connecting member 121 is disposed on the back body 12, wherein a receiving groove 126 for receiving the connecting member 121 is disposed on the back body 12 of the main body 1, a hook 125 for limiting the separation of the elastic member 2 extends from the connecting member 121, and an upper surface of the connecting member 121 is flush with a surface of the back body 12. Therefore, the connecting piece 121 and the main body 1 are integrally formed, so that the connecting strength of the connecting piece 121 is improved, and the mounting steps are saved; and the connection member 121 is located in the receiving groove 125, when the elastic member is mounted, the elastic member 2 is hooked on the connection member 121 and located in the receiving groove 125, thereby preventing the connection member 121 and the elastic member 2 from protruding outward and preventing the connection member 121 and the elastic member 2 from being hooked to the sofa fabric.

In this embodiment, the elastic element 2 is a serpentine spring, and two ends of the serpentine spring are respectively hooked on the connecting elements 121 of the two side back bodies 12. Indeed, in other embodiments, the elastic member 2 may also be an elastic band or a combination of a spring and an elastic band, so as to be connected to the main body 1 and provide elastic support force for the backrest of the sofa.

Referring to fig. 4, in the present embodiment, since the connecting member 121 mainly bears the inward pulling force of the elastic member 2, the cavity wall of the back-side body 12 of the main body 1 is easily bent at a position corresponding to the connecting member 121, and therefore, in order to increase the anti-deformation strength of the cavity wall, a groove 124 for enhancing the pulling force of the connecting member 121 bearing the elastic member 2 is disposed at a position corresponding to the connecting member 121 on the back-side body 12 of the main body 1. Specifically, the groove 124 is located at the outer side of the back body 12, and the groove 124 and the connecting member 121 are arranged in the horizontal direction.

Referring to fig. 1, in the present embodiment, the lower ends of both sides of the main body 1 are provided with first prefabricated coupling grooves 122 for coupling to a sofa bottom frame, and the upper ends of both sides of the main body are provided with second prefabricated coupling grooves 123. Specifically, first prefabricated connecting groove 122 and second prefabricated connecting groove 123 are located respectively side back body 12 is kept away from the lower and upper end of main back body 11 one side, just first prefabricated connecting groove 122 and second prefabricated connecting groove 123 both are formed by side back body 12 is inside sunken, first prefabricated connecting groove 122 and second prefabricated connecting groove 123 still can be provided with the screw respectively. Wherein first prefabricated spread groove 122 is used for being connected with the sofa chassis, second prefabricated spread groove 123 can be used for being connected with the headrest structure of sofa or being connected with the sofa structure that other outsides add, and the location is accurate, the equipment is convenient.

Referring to fig. 5 and 6, in this embodiment, the lower end of the main back body 1 is further provided with a first hook groove 16 for closing the back fabric, and the first hook groove 16 is formed by inward recessing of the surface of the main back body 1. When the sofa backrest fabric is used, the connecting strip is sewn on the edge of the backrest fabric and is pressed in the first hook groove 16 through a fixing piece, so that the backrest fabric is connected with the sofa backrest.

In the prior art, the backrest fabric on the sofa backrest is generally fixed in a nailing and cloth-pulling manner, so that the installation operation is complex and the labor cost is consumed. In the utility model, the first hook groove 16 is arranged at the lower end of the main back body 1 of the sofa backrest, and the connection between the backrest fabric and the sofa backrest is realized through the first hook groove 16, so that the connection mode is simple and convenient, the operation is simple, and the production efficiency is convenient to improve; when the assembly is wrong, the backrest fabric is convenient to disassemble, and the nondestructive disassembly and assembly of the backrest fabric are realized.

Preferably, the first hook groove 16 is long and arranged along the length direction of the main back body 1; the first hook grooves 16 are four, the four first hook grooves 16 are arranged in parallel, and are arranged on two sides of the reinforcing beam 14 in a pairwise symmetrical manner. The first strip-shaped hook groove 16 is more convenient to connect with a connecting strip of a backrest fabric, does not need to consider the matching problem of the length and the size of the connecting strip, and is convenient to operate; when the backrest fabric is used, different first hook grooves 16 are selected to be connected according to the reserved length of the backrest fabric, so that the close skin is ensured.

Admittedly, the utility model discloses it is right the quantity of first colluding groove 16 does specific restriction, the quantity of first colluding groove 16 still can be five, six, eight etc..

Referring to fig. 5 and 6, in this embodiment, a second hook groove 17 is further disposed on the cross beam, the second hook groove 17 may be used for closing the material reducing cavity 15 so as to close the material reducing cavity, and the second hook groove 17 is formed by inward recessing of the surface of the cross beam 13. When the sofa backrest fabric connecting device is used, the connecting strips are sewn on the edges of the backrest fabric, and then the connecting strips are pressed in the second hook grooves 17 through the fixing piece, so that the backrest fabric is connected with the sofa backrest, the connecting mode is simple and convenient, the operation is simple, and the production efficiency is convenient to improve; when the assembly is wrong, the backrest fabric is convenient to disassemble, and the nondestructive disassembly and assembly of the backrest fabric are realized.

Preferably, the second hook groove 17 is long and arranged along the length direction of the beam 13; the number of the second hook grooves 17 is two, and the two second hook grooves 17 are symmetrically arranged on two sides of the reinforcing beam 14. The strip-shaped second hook groove 17 is more convenient to connect with a connecting strip of a backrest fabric, the matching problem of the length and the size of the connecting strip is not considered, and the operation is convenient; because the sofa backrest is provided with the material reducing cavity 15, when two ends of the backrest fabric are closed on the first hook grooves 16, the material reducing cavity 15 is exposed, when the sofa backrest is applied to a functional sofa, articles are easy to leak from the material reducing cavity 15 in a lying state of the functional sofa, and the sofa backrest is not beautiful enough, and on the basis, one end connecting strip of the backrest fabric can be selectively connected to the second hook grooves 17, so that the material reducing cavity 15 is closed.

Indeed, in other preferred embodiments, four second hook grooves 17 may be provided, and the four second hook grooves 17 are arranged in parallel and are arranged on two sides of the reinforcing beam 14 in a symmetrical manner. The utility model discloses it is right the quantity of second catching groove 17 does specific restriction, the quantity of second catching groove 17 still can be five, six, eight and so on.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. A sofa backrest, characterized in that: the main body is made by blow molding and is provided with an internal cavity, and the main body is provided with a backrest cavity used for providing a deformation space for the elastic piece, a reinforcing part used for reinforcing the bearing capacity of the main body and a plurality of connecting pieces used for connecting the elastic piece.

2. The sofa backrest according to claim 1, wherein: the main part include the main back of the body with set up in the side back of the body of main back of the body both sides, the main back of the body and both sides back of the body are connected and are formed the back chamber, the rib set up in on the main back of the body, the connecting piece set up in on the side back of the body.

3. The sofa backrest according to claim 2, wherein: the lower ends of the two side back bodies are connected through a cross beam, and the cross beam and the main back body are spaced at intervals to form a material reducing cavity.

4. The sofa backrest according to claim 3, wherein: the cross beam is connected with the main back body through a reinforcing beam.

5. The sofa backrest according to claim 2, wherein: the side back body is in a triangular shape with a narrow upper part and a wide lower part.

6. The sofa backrest according to claim 2, wherein: the reinforcing part is a plurality of protrusions and depressions which are transversely arranged.

7. The sofa backrest according to claim 6, wherein: the plurality of protrusions and depressions are arranged in a wave shape.

8. The sofa backrest according to claim 1, wherein: the connecting piece and the main body are integrally formed.

9. The sofa backrest according to claim 8, wherein: the main part is provided with a containing groove for containing the connecting piece, and the connecting piece is extended with a hook head for limiting the separation of the elastic piece.

10. The sofa backrest according to claim 8, wherein: the main body is provided with a groove corresponding to the connecting piece, and the groove is used for enhancing the tensile force of the elastic piece borne by the connecting piece.

11. The sofa backrest according to claim 1, wherein: the lower extreme of both sides of main part is provided with the first prefabricated spread groove that is used for connecting the sofa chassis.

12. The sofa backrest according to claim 1, wherein: and second prefabricated connecting grooves are formed in the upper ends of the two sides of the main body.