Front-and-back adjustable waist rest

Abstract

A waist rest capable of being adjusted front and back comprises a waist rest body, a first guide shell, a second guide shell and an adjusting handle, the first guide shell is arranged on the waist rest body, the second guide shell is installed on the first guide shell in a sliding mode and moves in the length direction of the first guide shell, and the adjusting handle is arranged on the second guide shell. The limiting part is used for limiting the relative position of the first guide shell and the second guide shell; compared with the prior art, the adjusting handle assembled on the second guide shell is matched with the limiting block on the first guide shell, so that the first guide shell and the second guide shell are locked after the horizontal relative position is adjusted; and the situation that the position relation between the first guide shell and the second guide shell is changed due to external shaking is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of seat lumbar support, in particular to a front-to-back adjustable lumbar support. Background Art

[0002] When people sit for a long time, the pressure on the intervertebral disc is three times the weight of the torso. If you maintain a sitting posture for a long time, the pressure on the intervertebral disc will gradually accumulate. Initially, it will lead to poor blood circulation in the waist, gradual increase of lactic acid, and soreness and swelling in the waist. If you don't protect it, it will gradually compress the spine, causing lumbar muscle strain and lumbar diseases. Lumbar support can provide good support for the human waist, help relax the waist, and relieve waist pressure. However, when the lumbar support cannot meet the needs of users with different body shapes to adjust the extension length of the lumbar support, it is difficult to effectively relieve waist pressure.

[0003] To solve the above problems, Chinese patent application number 202122514229.5 discloses a lumbar support position movement adjustment system, a lumbar support assembly and a swivel chair. The above disclosed lumbar support position movement adjustment system adjusts the horizontal position of the lumbar support through a lumbar support horizontal movement arm horizontally slidably connected to the lumbar support connecting seat, an elastic structure connected between the lumbar support connecting seat and the lumbar support horizontal movement arm, a locking mechanism and a locking cancellation control assembly. However, the stability of the adjustment system after locking is insufficient, and the horizontal position of the lumbar support is easily changed due to external shaking. Utility Model Content

[0004] In view of the above shortcomings, the technical problem to be solved by the utility model is to provide a front-to-back adjustable lumbar support so that the lumbar support can maintain stability in a horizontal position after posture adjustment.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: a front-to-back adjustable lumbar support, comprising a lumbar support body, a first guide shell, a second guide shell and an adjustment handle; the first guide shell is arranged on the lumbar support body; the second guide shell is slidably installed on the first guide shell and moves along the length direction of the first guide shell; the adjustment handle is arranged on the second guide shell to limit the relative position of the first guide shell and the second guide shell.

[0006] As a preferred solution of the utility model, a plurality of installation guide grooves are formed on the outer walls on both sides of the first guide housing.

[0007] As a preferred solution of the utility model, a plurality of limit blocks are formed on one side of the first guide housing adjacent to the adjustment handle; the plurality of limit blocks are arranged in parallel along the length direction of the first guide housing.

[0008] As a preferred solution of the utility model, a boss structure with a through middle portion is formed inside the first guide housing; a guide tube is arranged at the through portion of the boss structure.

[0009] As a preferred solution of the utility model, a plurality of installation guide strips are formed on the inner walls on both sides of the second guide housing; the installation guide strips are arranged corresponding to the positions of the installation guide grooves.

[0010] As a preferred solution of the utility model, a limiting column is arranged in the second guide housing; and the guide tube is sleeved on the limiting column.

[0011] As a preferred solution of the utility model, a first handle mounting block and a limit adjustment groove are formed on one side of the second guide housing adjacent to the adjustment handle.

[0012] As a preferred solution of the utility model, an elastic element is arranged between the first guide housing and the second guide housing; the elastic element is sleeved on the guide tube, one end of the elastic element abuts against the boss structure, and the other end abuts against the second guide housing.

[0013] As a preferred solution of the utility model, a sinking groove structure with a central portion passing through is formed at one end of the adjustment handle; a second handle mounting block is arranged on the sinking groove structure, and the first handle mounting block is connected to the second handle mounting block.

[0014] As a preferred solution of the utility model, a limit adjustment block is formed on one side of the adjustment handle adjacent to the second guide housing, and the limit adjustment block is arranged in the limit adjustment groove.

[0015] Compared with the prior art, the beneficial effect of the utility model is that by cooperating with the limit block on the first guide shell through the adjustment handle assembled on the second guide shell, the first guide shell and the second guide shell are locked after the horizontal relative position adjustment is completed, so as to avoid the change of the positional relationship between the first guide shell and the second guide shell due to external shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 An exploded view of a front-to-back adjustable lumbar support provided in an embodiment of the present application;

[0017] Figure 2 A cross-sectional view of a front-to-back adjustable lumbar support provided in an embodiment of the present application;

[0018] Figure 3 A schematic diagram of the structure of a first guide housing provided in an embodiment of the present application;

[0019] Figure 4 A schematic diagram of the structure of a second guide housing provided in an embodiment of the present application;

[0020] Figure 5 A schematic diagram of the structure of the adjustment handle provided in an embodiment of the present application;

[0021] Figure markings: lumbar support body 1, first guide shell 2, installation guide groove 2-1, limit block 2-2, boss structure 2-3, guide tube 2-4, second guide shell 3, installation guide strip 3-1, limit column 3-2, first handle mounting block 3-3, limit adjustment groove 3-4, adjustment handle 4, sink structure 4-1, second handle mounting block 4-2, limit adjustment block 4-3, elastic element 5. DETAILED DESCRIPTION

[0022] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.

[0023] See also Figure 2 , Figure 2 A cross-sectional view of a front-to-rear adjustable lumbar support provided in an embodiment of the present application is shown.

[0024] like Figure 2 As shown, a front-to-back adjustable lumbar support comprises a lumbar support body 1, a first guide shell 2, a second guide shell 3 and an adjustment handle 4; the first guide shell 2 is arranged on the lumbar support body 1; the second guide shell 3 is slidably installed on the first guide shell 2 and moves along the length direction of the first guide shell 2; the adjustment handle 4 is arranged on the second guide shell 3 and is used to limit the relative position of the first guide shell 2 and the second guide shell 3.

[0025] Specifically, the adjustment handle 4 has a locking position and an adjustment position. When the user adjusts the relative position between the first guide shell 2 and the second guide shell 3 according to usage needs, the adjustment handle 4 is moved to the adjustment position. At this time, the second guide shell 3 can be moved along the length direction of the first guide shell 2; when the user has completed the adjustment, the adjustment handle 4 is moved to the locking position. At this time, the second guide shell 3 cannot be moved along the length direction of the first guide shell 2.

[0026] As an option in the embodiment of the present application, a plurality of installation guide grooves 2 - 1 are formed on the outer walls on both sides of the first guide shell 2 .

[0027] See here Figure 3 The structure diagram of the first guide housing provided in the embodiment of the present application is shown. Figure 3 As shown, specifically, the installation guide groove 2-1 is parallel to the length direction of the first guide shell 2, and multiple installation guide grooves 2-1 are parallel to each other, so that the second guide shell 3 mounted on the first guide shell 2 can move smoothly and stably along the length direction of the first guide shell 2.

[0028] As an optional embodiment of the present application, a plurality of limit blocks 2 - 2 are formed on one side of the first guide shell 2 adjacent to the adjustment handle 4 ; the plurality of limit blocks 2 - 2 are arranged in parallel along the length direction of the first guide shell 2 .

[0029] See here Figure 3 The structure diagram of the first guide housing provided in the embodiment of the present application is shown. Figure 3 As shown, specifically, the limit block 2-2 located in the middle of the first guide shell 2 cooperates with the adjusting handle 4 to control and adjust the relative position of the second guide shell 3 in the length direction of the first guide shell 2; at the same time, the limit blocks 2-2 located at both ends of the first guide shell 2 cooperate with the adjusting handle 4 to limit the second guide shell 3 to prevent the second guide shell 3 from slipping off the first guide shell 2.

[0030] As an option in the embodiment of the present application, a boss structure 2-3 penetrating the middle is formed inside the first guide shell 2; a guide tube 2-4 is arranged at the penetration portion of the boss structure 2-3.

[0031] like Figure 2 and Figure 3 As shown, specifically, the boss structure 2-3 that passes through the middle orients and limits the guide tube 2-4, so that the axial direction of the guide tube 2-4 is consistent with the axial direction of the boss structure 2-3.

[0032] As an option in the embodiment of the present application, a plurality of installation guide strips 3 - 1 are formed on the inner walls on both sides of the second guide housing 3 ; the installation guide strips 3 - 1 are arranged corresponding to the positions of the installation guide grooves 2 - 1 .

[0033] See here Figure 4 The structure diagram of the second guide housing provided in the embodiment of the present application is shown. Figure 4 As shown, specifically, the installation guide bar 3-1 is parallel to the length direction of the second guide shell 3, and multiple installation guide bars 3-1 are parallel to each other; the installation guide bar 3-1 cooperates with the installation guide groove 2-1, so that the second guide shell 3 mounted on the first guide shell 2 can move smoothly and stably along the length direction of the first guide shell 2.

[0034] As an option in the embodiment of the present application, a limiting column 3-2 is arranged in the second guide shell 3; and the guide tube 2-4 is sleeved on the limiting column 3-2.

[0035] See here Figure 4 The structure diagram of the second guide housing provided in the embodiment of the present application is shown. Figure 4 As shown, specifically, the limiting column 3-2 orients and limits the guide tube 2-4 so that the axial direction of the guide tube 2-4 mounted on the limiting column 3-2 is consistent with the axial direction of the limiting column 3-2.

[0036] As an option in the embodiment of the present application, a first handle mounting block 3 - 3 and a limit adjustment groove 3 - 4 are formed on one side of the second guide housing 3 adjacent to the adjustment handle 4 .

[0037] See here Figure 4 The structure diagram of the second guide housing provided in the embodiment of the present application is shown. Figure 4 As shown, specifically, the first handle mounting block 3-3 on the second guide shell 3 cooperates with the second handle mounting block 4-2 arranged on the adjusting handle 4, and the adjusting handle 4 is assembled on the second guide shell 3, while ensuring that the limit adjustment block 4-3 on the adjusting handle 4 is inserted into the limit adjustment groove 3-4.

[0038] Furthermore, the limit adjustment block 4-3 in the limit adjustment slot 3-4 moves along the length direction of the limit adjustment slot 3-4.

[0039] As an optional embodiment of the present application, an elastic element 5 is arranged between the first guide shell 2 and the second guide shell 3; the elastic element 5 is mounted on the guide tube 2-4, one end of the elastic element 5 abuts against the boss structure 2-3, and the other end abuts against the second guide shell 3.

[0040] See here Figure 2 The cross-sectional view of a front-to-back adjustable lumbar support provided by the embodiment of the present application is shown. Figure 2 As shown, specifically, under the action of the elastic element 5 , the first guide housing 2 and the second guide housing 3 always tend to move away from each other.

[0041] Furthermore, the direction of the force exerted by the elastic element 5 mounted on the guide tube 2-4 on the second guide shell 3 is consistent with the direction in which the second guide shell 3 moves relative to the first guide shell 2, thereby reducing the friction resistance generated when the second guide shell 3 moves relative to the first guide shell 2 and avoiding additional wear.

[0042] As an optional embodiment of the present application, a sink structure 4-1 with a central portion passing therethrough is formed at one end of the adjustment handle 4; a second handle mounting block 4-2 is arranged on the sink structure 4-1, and the first handle mounting block 3-3 is connected to the second handle mounting block 4-2.

[0043] like Figure 1 and Figure 5 As shown, specifically, the adjustment handle 4 is located between the first handle mounting block 3 - 3 and the second handle mounting block 4 - 2 , and the first handle mounting block 3 - 3 and the second handle mounting block 4 - 2 cooperate to press the adjustment handle 4 onto the second guide housing 3 .

[0044] As an option in the embodiment of the present application, a limit adjustment block 4 - 3 is formed on one side of the adjustment handle 4 adjacent to the second guide shell 3 , and the limit adjustment block 4 - 3 is arranged in the limit adjustment groove 3 - 4 .

[0045] like Figure 2 , Figure 4 and Figure 5 As shown, specifically, the limit adjustment block 4-3 arranged in the limit adjustment groove 3-4 moves along the length direction of the limit adjustment groove 3-4.

[0046] During actual use, first, one end of the guide tube 2-4 is put on the limit column 3-2 of the second guide shell 3, and then the elastic element 5 is put on the guide tube 2-4, and then the other end of the guide tube 2-4 is inserted into the boss structure 2-3 of the first guide shell 2, and at the same time, the two ends of the elastic element 5 are respectively abutted against the boss structure 2-3 and the second guide shell 3, and finally, the groove structure 4-1 and the limit adjustment block 4-3 of the adjustment handle 4 are respectively aligned with the first handle mounting block 3-3 and the limit adjustment groove 3-4 of the second guide shell 3, and the adjustment handle 4 is assembled on the second guide shell 3 through the second handle mounting block 4-2 and the first handle mounting block 3-3 to complete the assembly of the front and rear adjustment lumbar support.

[0047] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0048] Although this article uses more of the following terms: waist support body 1, first guide housing 2, installation guide groove 2-1, limit block 2-2, boss structure 2-3, guide tube 2-4, second guide housing 3, installation guide strip 3-1, limit column 3-2, first handle installation block 3-3, limit adjustment groove 3-4, adjustment handle 4, sink structure 4-1, second handle installation block 4-2, limit adjustment block 4-3, elastic element 5, etc., it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A front and rear adjustable lumbar support, characterized in that: It comprises a lumbar support body (1), a first guide shell (2), a second guide shell (3) and an adjustment handle (4); The first guide shell (2) is arranged on the lumbar support body (1); the second guide shell (3) is slidably mounted on the first guide shell (2) and moves along the length direction of the first guide shell (2); and the adjustment handle (4) is arranged on the second guide shell (3) and is used to limit the relative position of the first guide shell (2) and the second guide shell (3).

2. The front-to-back adjustable lumbar support according to claim 1, characterized in that: A plurality of installation guide grooves (2-1) are formed on the outer walls on both sides of the first guide housing (2).

3. The front-to-back adjustable lumbar support according to claim 1, characterized in that: A plurality of limit blocks (2-2) are formed on one side of the first guide housing (2) adjacent to the adjustment handle (4); the plurality of limit blocks (2-2) are arranged in parallel along the length direction of the first guide housing (2).

4. The front-to-back adjustable lumbar support according to claim 1, characterized in that: A boss structure (2-3) with a central portion penetrating therethrough is formed inside the first guide housing (2); a guide tube (2-4) is arranged at the penetration portion of the boss structure (2-3).

5. The front-to-back adjustable lumbar support according to claim 1, characterized in that: A plurality of installation guide strips (3-1) are formed on the inner walls on both sides of the second guide housing (3); the installation guide strips (3-1) are arranged in positions corresponding to the installation guide grooves (2-1).

6. The front-to-back adjustable lumbar support according to claim 1, characterized in that: A limiting column (3-2) is arranged inside the second guide housing (3); and the guide tube (2-4) is sleeved on the limiting column (3-2).

7. The front-to-back adjustable lumbar support according to claim 1, characterized in that: A first handle mounting block (3-3) and a limit adjustment groove (3-4) are formed on one side of the second guide housing (3) adjacent to the adjustment handle (4).

8. The front-to-back adjustable lumbar support according to claim 1, characterized in that: An elastic element (5) is arranged between the first guide housing (2) and the second guide housing (3); the elastic element (5) is sleeved on the guide tube (2-4), one end of the elastic element (5) abuts against the boss structure (2-3), and the other end abuts against the second guide housing (3).

9. The front-to-back adjustable lumbar support according to claim 1, characterized in that: One end of the adjustment handle (4) is formed with a sink structure (4-1) with a central portion running through it; a second handle mounting block (4-2) is arranged on the sink structure (4-1), and the first handle mounting block (3-3) is connected to the second handle mounting block (4-2).

10. The front-to-back adjustable lumbar support according to claim 1, characterized in that: A side of the adjustment handle (4) adjacent to the second guide housing (3) forms a limit adjustment block (4-3), and the limit adjustment block (4-3) is arranged in the limit adjustment groove (3-4).

Images