Multipurpose sofa backrest

Abstract

The utility model belongs to the technical field of sofas, and particularly relates to a multipurpose sofa backrest which comprises a backrest support and a backrest cushion arranged on the backrest support, the lower end of a side rod of the backrest support extends downwards to be provided with a first pipe body, two T-shaped grooves with downward openings are symmetrically formed in the side wall of the lower end of the first pipe body, and the lower end of the first pipe body is provided with a second pipe body. A T-shaped groove is formed in the upper portion of the first pipe body, a sleeve extending downwards is fixed to a mounting hole in the middle of the mounting flange, a transverse shaft is arranged in the middle of the inner wall of the lower portion of the sleeve, the first pipe body is inserted into the sleeve from top to bottom, the transverse shaft is clamped into the T-shaped groove, the transverse shaft can rotate by 0-90 degrees in a transverse groove of the T-shaped groove, and the first pipe body and the second pipe body are connected through the T-shaped groove. The multipurpose sofa backrest has the advantages that sitting is convenient, and the position of the backrest can be changed at any time.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sofa technical field, especially relate to a multi -purpose sofa backrest. BACKGROUND

[0002] At present, domestic sofa includes three people sofa, single sofa and square sofa without backrest, for square sofa can be very convenient to move to any position of the room, for people to ride, its insufficient place lies in: because square sofa does not have backrest, when riding, can only sit straight or sit with forward inclination, very inconveniently ride. SUMMARY

[0003] The utility model aims at providing a multi -purpose sofa backrest that is convenient to ride and can change backrest position at any time.

[0004] The utility model is solved by the following way:

[0005] A multi -purpose sofa backrest, including backrest support and backrest pad set on backrest support, the lower end of one side rod of backrest support extends downward and is provided with first pipe body, two downward opening T-shaped grooves are symmetrically arranged on the side wall of the lower end of first pipe body, the mounting hole in the middle of mounting flange is fixed with downward extending sleeve, the lower inner wall of sleeve is centrally provided with horizontal transverse shaft, first pipe body is inserted into sleeve from top to bottom and transverse shaft is clamped into T-shaped groove, and transverse shaft can rotate 0-90 degrees in the horizontal groove of T-shaped groove.

[0006] As further optimization of the above technical scheme, the backrest support includes a rectangular frame composed of left and right side rods and upper and lower side rods, and the first pipe body is formed by downward extension of the lower end of the left or right side rod.

[0007] As further optimization of the above technical scheme, the middle part of the first pipe body is inwardly folded to form a bending part.

[0008] As further optimization of the above technical scheme, the bending angle of the bending part is 145-175 degrees.

[0009] As further optimization of the above technical scheme, the backrest support and the first pipe body are both formed by pipe body bending and welding.

[0010] As further optimization of the above technical scheme, more than one limiting protrusion is arranged on the peripheral wall of the mounting hole of the mounting flange, and a positioning groove is arranged on the upper end of the sleeve corresponding to each limiting protrusion, and the limiting protrusion on the mounting flange is clamped in the positioning groove to realize the circumferential positioning of the sleeve relative to the mounting flange.

[0011] As a further optimization of the above technical solutions, the mounting flange is a rectangular plate body, and the mounting hole is arranged at the middle portion of the plate body, and bolt mounting holes are arranged on the plate body around the mounting hole.

[0012] As a further optimization of the above technical solutions, the backrest support is provided with an integrated backrest pad on the front and back surfaces to form a double-sided backrest. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the front view of the utility model.

[0014] Figure 2 is the exploded schematic view of the backrest support, the mounting flange and the sleeve of the utility model.

[0015] Figure 3 is the local schematic view of the connecting structure of the sleeve and the first pipe body of the utility model.

[0016] Figure 4 is the local schematic view of the lower structure of the first pipe body of the utility model.

[0017] Figure 5 is the local schematic view of the lower structure of the sleeve of the utility model.

[0018] Figure 6 is the three-dimensional schematic view of the utility model mounted on the square sofa. DETAILED DESCRIPTION

[0019] The utility model will be further described in combination with the drawings and specific embodiments, referring to Figures 1-6 :

[0020] A multi-purpose sofa backrest comprises a backrest support 10 and a backrest pad 41 arranged on the backrest support 10, the lower end of one side rod 11 of the backrest support 10 extends downward to be provided with a first pipe body 15, two downward-opening "T"-shaped grooves 16 are symmetrically arranged on the side wall of the lower end of the first pipe body 15, a sleeve 30 extending downward is fixed on the mounting hole 22 of the middle portion of the mounting flange 20, a transverse horizontal shaft 31 is arranged in the middle on the inner wall of the lower portion of the sleeve 30, the first pipe body 15 is inserted into the sleeve 30 from top to bottom, and the horizontal shaft 31 is clamped into the horizontal groove 17 of the "T"-shaped groove 16 from the vertical groove 18 of the "T"-shaped groove 16, and the horizontal shaft 31 can rotate by 0-90 degrees in the horizontal groove 17 of the "T"-shaped groove 16.

[0021] As a further optimization of the above technical solutions, the backrest support 10 comprises a rectangular frame formed by left and right side rods 11 and 13 and upper and lower side rod structures 12 and 14, and the first pipe body 15 is formed by extending downward from the lower end of the left side rod 11 or the right side rod 13.

[0022] As a further optimization of the above technical solution, the middle part of the first pipe body 15 is inwardly folded to form a bending part.

[0023] As a further optimization of the above technical solution, the bending angle A of the bending part is 145-175 degrees.

[0024] As a further optimization of the above technical solution, the backrest support 10 and the first pipe body 15 are both formed by pipe body bending and welding.

[0025] As a further optimization of the above technical solution, the mounting hole 22 of the mounting flange 20 is provided with one or more limiting protrusions 23 on the peripheral wall, and the upper end of the sleeve 30 is provided with a positioning groove 32 corresponding to each limiting protrusion 23, and the limiting protrusion 23 on the mounting flange 20 is clamped on the positioning groove 32 to realize the circumferential positioning of the sleeve 30 relative to the mounting flange 20.

[0026] As a further optimization of the above technical solution, the mounting flange 20 is a rectangular plate body, and the middle part of the plate body is provided with the mounting hole 22, and the plate body around the mounting hole 22 is provided with a bolt mounting hole 21.

[0027] As a further optimization of the above technical solution, the front and back surfaces of the backrest support 10 are both provided with an integrated backrest pad 41 to form a double-sided backrest.

[0028] The positive effect of the present application compared with the prior art is:

[0029] 1. The mounting flange 20 and the sleeve 30 are mounted on one corner of the square sofa 40 (see Figure 6 ), the first pipe body 15 of the backrest support is inserted into the sleeve 30, and the backrest pad 41 or the double-sided backrest is rotated to 0 degrees or 90 degrees, so that the user can conveniently sit and rely on in different positions of the room.

[0030] 2. The vertical groove 18 of the "T" shaped groove 16 on the sleeve 30 of the double-sided backrest can be conveniently rotated to align with the horizontal shaft 31 when not needed, and the double-sided backrest can be taken off by lifting it upwards, which is convenient for storage or different needs of the user.

[0031] 3. The structure of the present application is simple, convenient to disassemble and assemble, and convenient to convert the angle, and is suitable for optimization and improvement of the square sofa in the family or conference room.

[0032] The above examples are only used to illustrate the technical solutions of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still make simple replacement or modification of the technical solutions or technical features recorded in the foregoing examples by similar technology, and these simple replacement or modification does not make the essence of the corresponding technical solution deviate from the spirit and essence of the technical solutions of the embodiments of the present application, and is still within the protection scope of the present application.

Claims

1. A multi-purpose sofa backrest comprising a backrest support and a backrest cushion arranged on the backrest support, characterized in that: The lower end of one side rod of the back support is provided with a first pipe body, two downward opening "T" type slots are symmetrically arranged on the side wall of the lower end of the first pipe body, a sleeve pipe extending downward is fixed on the mounting hole of the middle part of the mounting flange, a horizontal shaft is arranged on the inner wall of the lower part of the sleeve pipe, the first pipe body is inserted into the sleeve pipe from top to bottom, and the horizontal shaft is clamped into the "T" type slot, and the horizontal shaft can rotate by 0-90 degrees in the horizontal slot of the "T" type slot.

2. The multi-purpose sofa backrest according to claim 1, characterized in that: The back support comprises a rectangular frame formed by left and right side rods and upper and lower side rods, and the first pipe body is formed by the downward extension of the lower end of the left or right side rod.

3. The multi-purpose sofa backrest according to claim 1, characterized in that: The middle part of the first pipe body is inwardly folded to form a bending part.

4. A multi-purpose sofa backrest according to claim 3, characterized in that: The bending angle of the bending part is 145-175 degrees.

5. The multi-purpose sofa backrest according to claim 1, characterized in that: The back support and the first pipe body are formed by pipe body bending and welding.

6. The multi-purpose sofa backrest according to claim 1, characterized in that: More than one limiting block is arranged on the peripheral wall of the mounting hole of the mounting flange, a positioning slot is arranged on the upper end of the sleeve pipe corresponding to each limiting block, and the limiting blocks on the mounting flange are clamped on the positioning slots to realize the circumferential positioning of the sleeve pipe relative to the mounting flange.

7. The multi-purpose sofa backrest according to claim 1, characterized in that: The mounting flange is a rectangular plate body, the middle part of the plate body is provided with the mounting hole, and a bolt mounting hole is arranged on the plate body around the mounting hole.

8. A multi-purpose sofa backrest according to any one of claims 1-7, characterized in that: The front and back surfaces of the back support are both provided with an integrated back pad to form a double-sided back.

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