Back support with improved structure

Abstract

The utility model discloses a back support with an improved structure, which comprises a bottom plate, slideways and a supporting shell, the slideways are symmetrically arranged on the bottom plate, sliders are connected onto the slideways in a sliding manner, the sliders are fixedly connected to the bottom of the supporting shell, and fixing screws are sleeved on screw holes arranged at the bottom of the supporting shell. The fixing piece slides on the supporting shell through the first guide wheel, the second guide wheel and the third guide wheel, so that a user can adjust the leaning position of the waist support at any time, and the waist support can be automatically reset through the elastic force of the compression spring after the position is adjusted; the supporting shell slides on the bottom plate through the pulleys at the bottom of the supporting shell, the extension spring enables the supporting shell to automatically reset while sliding on the bottom plate, then the first supporting frame and the second supporting frame can synchronously slide and reset, the back support can adjust the supporting height according to the body shape of a person, the structure is simple, adjustment is convenient, and practicability is high. The personalized requirements of the user are met, and the use experience of the user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of backrest brackets, in particular to a backrest bracket with an improved structure. Background Art

[0002] A seat is a piece of furniture with a backrest, a base and armrests. It can be divided into car seats, bus seats, family seats, etc. according to its use. It can be divided into aluminum alloy seats, stainless steel seats, iron seats, wooden seats, and seats made of other materials, etc. according to its material. The backrest and the seat surface in the seat are connected through a back bracket. The back bracket provides additional support for the seat, so that the seat can maintain a stable state and make it more comfortable to lean on. The existing seat bracket still has certain defects. On the one hand, the rear position cannot be adjusted forward and backward, and the leaning angle is limited. On the other hand, the height of the lumbar support position cannot be adjusted according to the human body shape, which affects the user experience. Therefore, it is necessary to design a back bracket with an improved structure. Utility Model Content

[0003] The purpose of the utility model is to provide a back support with an improved structure, so as to solve the problems that the existing back support cannot adjust the rear position forward and backward, the leaning angle is limited, and the height of the waist support position cannot be adjusted according to the human body shape, thus affecting the user experience.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a back bracket with an improved structure, comprising a bottom plate, a slideway, a supporting shell and a fixing member, the bottom plate is symmetrically provided with slideways, the slideway is slidably connected with a sliding block, the sliding block is fixedly connected to the bottom of the supporting shell, a fixing screw is sleeved on the screw hole provided in the bottom of the supporting shell, one end of the tension spring is sleeved on the fixing screw, the other end of the tension spring is sleeved on the fixing bolt, the fixing bolt is sleeved in the through hole provided in the spring fixing groove, a limiting rod is sleeved in the through hole provided in the supporting shell, the limiting rod is sleeved in the adjusting hole, the adjusting hole is provided on the fixing member, a first guide wheel is slidably connected in the slideways provided at both ends of the fixing member, and a second guide wheel is slidably connected in the slideways symmetrically provided on both sides of the fixing member, the first guide wheel and the second guide wheel are rollingly connected to the inner wall of the supporting shell, a compression spring is sleeved in the slot provided in the bottom of the fixing member, and one end of the compression spring is fixedly connected to the inner bottom end of the supporting shell.

[0005] As a further technical solution of the utility model, fixing holes are provided on the bottom plate.

[0006] As a further technical solution of the utility model, the base plate is provided with reinforcing fixing bolts, and a fixing block is provided at the bottom of the base plate.

[0007] As a further technical solution of the utility model, the bottom of the support shell is evenly provided with sliding grooves, pulleys are slidably connected to the sliding grooves, and a fixing piece is sleeved on the support shell.

[0008] As a further technical solution of the utility model, a shaft rod is sleeved in the through hole opened at the top of the fixing member.

[0009] As a further technical solution of the utility model, the two ends of the shaft are respectively sleeved with a first support frame and a second support frame, the first support frame and the second support frame are fixedly connected to each other, and support mounting holes are opened on the first support frame and the second support frame.

[0010] As a further technical solution of the utility model, a third guide wheel is sleeved in a through hole opened on one side of the top of the support shell, and the third guide wheel is slidably connected to the fixing member.

[0011] The utility model provides an improved back support structure, which has the advantages that: the fixing member is slid on the support shell by the first guide wheel, the second guide wheel and the third guide wheel, the compression spring on the slot hole of the fixing member provides elastic force for the fixing member, and then the limiting rod on the adjustment hole is used to limit the sliding range of the fixing member, so that the first support frame and the second support frame can adjust the support position with the sliding of the fixing member, and automatically reset by the elastic force of the compression spring after the position is adjusted, so that the user can adjust the supporting position of the waist support at any time; the support shell is initially limited by the slideway provided on the bottom plate and the slider fixed on the bottom of the support shell, the support shell is slid on the bottom plate by the pulley at the bottom of the support shell, and the tension spring on the bottom bolt of the support shell is sleeved by the fixing screw, so that the support shell can be automatically reset by the tension of the tension spring while sliding on the slideway, so that the first support frame and the second support frame can slide synchronously with the support shell and automatically reset, so that the first support frame and the second support frame can adjust the support height of the support according to the body shape of the person, the structure is simple, the adjustment is convenient, the personalized needs of the user are met, and the user experience is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0014] Figure 2 It is an exploded view of the overall structure of the utility model;

[0015] Figure 3 It is a schematic diagram of the position of the compression spring in the utility model;

[0016] Figure 4 It is a partial structural schematic diagram of the utility model;

[0017] Figure 5 It is a bottom view of the overall structure of the utility model.

[0018] In the figure: 1. bottom plate; 2. slideway; 3. slider; 4. support shell; 5. fixing screw; 6. tension spring; 7. fixing bolt; 8. spring fixing groove; 9. pulley; 10. fixing piece; 11. first guide wheel; 12. second guide wheel; 13. limit rod; 14. adjustment hole; 15. compression spring; 16. strengthening fixing bolt; 17. shaft rod; 18. first support frame; 19. second support frame; 20. support mounting hole; 21. fixing block; 22. third guide wheel. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] See also Figure 1-5The utility model provides an embodiment: a back bracket with an improved structure, including a bottom plate 1, a slideway 2, a support shell 4 and a fixing member 10, the bottom plate 1 is symmetrically provided with a slideway 2, the slideway 2 is slidably connected with a slider 3, the slider 3 is fixedly connected to the bottom of the support shell 4, a fixing screw 5 is sleeved on the screw hole opened at the bottom of the support shell 4, one end of the tension spring 6 is sleeved on the fixing screw 5, the other end of the tension spring 6 is sleeved on the fixing bolt 7, the fixing bolt 7 is sleeved in the through hole opened in the spring fixing groove 8, a limiting rod 13 is sleeved in the through hole opened in the support shell 4, the limiting rod 13 is sleeved in the adjustment hole 14, the adjustment hole 14 is opened on the fixing member 10, the support shell 4 and the fixing member 10 are connected to each other through the limiting rod 13, a reinforcing fixing bolt 16 is arranged on the bottom plate 1, a fixing block 21 is arranged at the bottom of the bottom plate 1, slide grooves are evenly opened at the bottom of the support shell 4, a pulley 9 is slidably connected to the slide grooves, the fixing member 10 is sleeved on the support shell 4, and the fixing member 10 is sleeved on the fixing member 10. A compression spring 15 is sleeved in the slot hole opened at the bottom of the fixed member 10, and one end of the compression spring 15 is fixedly connected to the inner bottom end of the support shell 4. A first guide wheel 11 is slidably connected in the slide grooves opened at both ends of the fixed member 10, and a second guide wheel 12 is slidably connected in the slide grooves symmetrically opened on both sides of the fixed member 10. A shaft rod 17 is sleeved in the through hole opened at the top of the fixed member 10, and the first support frame 18 and the second support frame 19 are sleeved at both ends of the shaft rod 17. The first support frame 18 and the second support frame 19 are fixedly connected to each other, and support mounting holes 20 are opened on the first support frame 18 and the second support frame 19. A third guide wheel 22 is sleeved in the through hole opened on one side of the top of the support shell 4, and the third guide wheel 22 is slidably connected to the fixed member 10, and the first guide wheel 11 and the second guide wheel 12 are rollingly connected to the inner wall of the support shell 4. The first guide wheel 11 and the second guide wheel 12 make the fixed member 10 more stably rollingly connected to the inside of the support shell 4;

[0022] Specifically, when in use, first, the fixing member 10 is slid on the support shell 4 through the first guide wheel 11, the second guide wheel 12 and the third guide wheel 22, the compression spring 15 on the slot of the fixing member 10 provides elastic force for the fixing member 10, and the limit rod 13 on the adjustment hole 14 is used to limit the sliding range of the fixing member 10, so that the first support frame 18 and the second support frame 19 can adjust the position with the sliding of the fixing member 10, and the elastic force of the compression spring 15 is used to automatically reset after the position is adjusted, so that the user can adjust the supporting position of the waist support at any time; through the slideway 2 opened on the bottom plate 1 and fixed on the bottom of the support shell 4 The slider 3 at the bottom performs preliminary positioning of the support shell 4, and the pulley 9 at the bottom of the support shell 4 is used to make the support shell 4 slide on the bottom plate 1. The tension spring 6 on the bolt at the bottom of the support shell 4 is sleeved on the fixing screw 5, so that the support shell 4 can automatically reset while sliding on the slide 2 by the tension of the tension spring 6, and then the first support frame 18 and the second support frame 19 can slide synchronously with the support shell 4 and automatically reset, so that the first support frame 18 and the second support frame 19 can adjust the support height of the bracket according to the body shape of the person, with simple structure and convenient adjustment, which meets the personalized needs of users and improves the user experience.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A back support with an improved structure, comprising a bottom plate (1), a slideway (2), a support shell (4) and a fixing member (10), characterized in that: The bottom plate (1) is symmetrically provided with slideways (2), the slideways (2) are slidably connected with sliders (3), the sliders (3) are fixedly connected to the bottom of the support shell (4), a fixing screw (5) is sleeved on the screw hole provided at the bottom of the support shell (4), one end of a tension spring (6) is sleeved on the fixing screw (5), the other end of the tension spring (6) is sleeved on a fixing bolt (7), the fixing bolt (7) is sleeved in a through hole provided in the spring fixing groove (8), a limiting rod (13) is sleeved in the through hole provided in the support shell (4), and the limiting rod (13) is sleeved in the adjustment hole (14), The adjusting hole (14) is formed on the fixing member (10); the fixing member (10) is sleeved on the supporting shell (4); a first guide wheel (11) is slidably connected in the slide grooves formed at both ends of the fixing member (10); and a second guide wheel (12) is slidably connected in the slide grooves symmetrically formed on both sides of the fixing member (10); the first guide wheel (11) and the second guide wheel (12) are rollingly connected to the inner wall of the supporting shell (4); a compression spring (15) is sleeved in the slot hole formed at the bottom of the fixing member (10); and one end of the compression spring (15) is fixedly connected to the inner bottom end of the supporting shell (4).

2. The back support according to claim 1, characterized in that: Reinforcement fixing bolts (16) are provided on the base plate (1).

3. The back support according to claim 2, characterized in that: A fixing block (21) is provided at the bottom of the base plate (1).

4. The back support according to claim 3, characterized in that: The bottom of the support shell (4) is evenly provided with sliding grooves, and pulleys (9) are slidably connected to the sliding grooves.

5. The back support with improved structure according to claim 1, characterized in that: A shaft rod (17) is sleeved in a through hole opened at the top of the fixing member (10).

6. The back support according to claim 5, characterized in that: The two ends of the shaft rod (17) are respectively sleeved with a first support frame (18) and a second support frame (19); the first support frame (18) and the second support frame (19) are fixedly connected to each other, and support mounting holes (20) are provided on the first support frame (18) and the second support frame (19).

7. The back support with improved structure according to claim 1, characterized in that: A third guide wheel (22) is sleeved in a through hole opened on one side of the top of the support shell (4), and the third guide wheel (22) is slidably connected to the fixing member (10).

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