CN221865233U - Adjustable lumbar support for a seat - Google Patents

Abstract

The utility model provides an adjustable seat waist is leaned on for solve the prior art's that mentions among the background art seat supports user's waist through the back pad below arch, because the protruding unable regulation of back pad department for the user's waist of different sizes can not obtain effective support, and the circumstances that the waist can appear the ache after long-time use leads to using and experience relatively poor technical problem, including back of the chair frame, all set firmly the guide rail on the back of the chair frame opposite both sides inner wall, two slide between the guide rail and be equipped with the slider, the slider is used for relying on one side to be equipped with the connecting block, it leans on to rotate on the connecting block to be equipped with the waist, be equipped with on the guide rail and be used for adjusting the waist and lean on the high adjusting part of back of the chair frame, be equipped with on the slider and be used for adjusting the waist lean on the length adjusting part of distance with the slider, be equipped with on the connecting block and be used for adjusting the waist and lean on rotation angle's rotating assembly.

Description

Adjustable lumbar support for a seat

Technical Field

The utility model relates to the technical field of seat processing, in particular to an adjustable seat lumbar support.

Background Art

Chairs are one of the indispensable furniture in people's daily life and office. Modern chairs can also be equipped with lumbar support components to enhance the comfort of the chairs. The lumbar support components can also integrate massage modules, heating modules and other functional modules to provide various practical functions for the chairs.

A seat in the prior art, such as a utility model patent document with authorization announcement number "CN218304117U" and patent name "An Office Chair", discloses an office chair, including a seat, a backrest frame and a moving mechanism; a moving part is provided on one side of the seat, the moving part is extended along the length direction of the seat, and the moving part is provided with a plurality of limit grooves at intervals along its extension direction; the backrest frame includes a back panel, a connecting rod and a connecting seat, the back panel is provided on one side of the seat, one end of the connecting rod is connected to the surface of the back panel facing away from the seat, and the other end is rotatably connected to the connecting seat, the connecting seat is slidably connected to the moving part, and can be engaged in different limit grooves to make the back panel close to or away from the seat.

In the above patent, the waist of the user is supported by the bulge under the back pad. Since the bulge at the back pad cannot be adjusted, the waists of users of different body shapes cannot be effectively supported, and the waist may become sore after long-term use, resulting in a poor user experience.

Utility Model Content

The purpose of the utility model is to propose an adjustable seat lumbar support in response to the deficiencies of the prior art, which is used to solve the technical problem that the seat of the prior art mentioned in the background technology supports the user's waist through the bulge under the back cushion, and because the bulge at the back cushion cannot be adjusted, the waist of users of different body shapes cannot obtain effective support, and the waist may become sore after long-term use, resulting in a poor user experience.

The above technical objectives of the utility model are achieved through the following technical solutions:

An adjustable seat lumbar support comprises a seat back frame, guide rails are fixedly provided on the inner walls on opposite sides of the seat back frame, a sliding block is slidably provided between the two guide rails, a connecting block is provided on one side of the seat back frame for leaning, a lumbar support is rotatably provided on the connecting block and on the side away from the seat back frame, a height adjustment component for adjusting the height of the lumbar support is provided on the guide rail, a length adjustment component for adjusting the distance between the lumbar support and the seat back frame is provided between the connecting block and the sliding block, and a rotating component for adjusting the rotation angle of the lumbar support is provided on the connecting block.

Working principle:

When the user leans on the chair back frame, the lumbar support can support the user's waist. When the user needs to change the vertical height of the lumbar support, the user can adjust the vertical height position of the lumbar support through the height adjustment component. When the user needs to change the length distance between the lumbar support and the sliding block, the user can adjust the lateral position of the lumbar support through the length adjustment component to make the lumbar support closer to the user's waist. When the user needs to change the support angle of the lumbar support, the user can change the support angle of the lumbar support by rotating the component.

Compared with the prior art, the utility model has the following beneficial effects:

First, a height adjustment component is provided, which can adjust the vertical height position of the lumbar support, so that the user can adjust the lumbar support to the user's waist position.

Secondly, a length adjustment component is provided, which can adjust the lateral distance of the lumbar support so that the lumbar support fits the user's waist more closely, thereby effectively supporting the user's waist.

Thirdly, a rotating assembly is provided, which can adjust the rotation angle of the lumbar support so that the lumbar support can better fit the back of the human body and provide effective support for the waist of the user.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of the utility model;

FIG2 is an enlarged schematic diagram of the structure at A in FIG1 ;

FIG3 is a schematic diagram of the assembly structure of the mounting plate and the support plate;

FIG. 4 is a schematic diagram of the assembly structure of the guide rail and the sliding block.

Explanation of the reference numerals: chair back frame 1, guide rail 2, sliding block 3, connecting block 4, lumbar support 5, first screw 6, first guide rod 7, second screw 8, second guide rod 9, fixed rod 10, rotating block 11, clamping rod 12, spring 13, clamping groove 14, rotating plate 15, mounting plate 16, support plate 17, torsion spring 18, filler 19.

DETAILED DESCRIPTION

The technical solution of the present utility model is further described below in conjunction with the accompanying drawings and embodiments.

Example:

As shown in Figures 1 and 4, an adjustable seat lumbar support includes a seat back frame 1, guide rails 2 are fixedly provided on the inner walls of the two opposite sides of the seat back frame 1, a sliding block 3 is slidably provided between the two guide rails 2, a connecting block 4 is provided on one side of the seat back frame 1 for leaning, a lumbar support 5 is rotatably provided on the connecting block 4 and on the side away from the seat back frame 1, the sliding block 3 can slide in the two guide rails 2, so as to facilitate the sliding of the lumbar support 5 on the seat back frame 1, a height adjustment component for adjusting the height of the lumbar support 5 is provided on the guide rail 2, and the height adjustment component includes a first screw rod 6 and a first guide rod 7, the first screw rod 6 is vertically rotatably provided in one of the guide rails 2 and the sliding block 3 is threadedly connected to the first screw rod 6, the first guide rod 7 is vertically fixed in the other guide rail 2 and the sliding block 3 is slidably connected to the first guide rod 7, and the vertical height position of the lumbar support 5 on the guide rail 2 can be changed by the first screw rod 6 and the first guide rod 7.

As shown in Figures 1 and 4, a length adjustment component for adjusting the distance between the lumbar support 5 and the chair back frame 1 is provided between the connecting block 4 and the sliding block 3, and the length adjustment component includes a second screw rod 8 and a second guide rod 9, the second screw rod 8 is threadedly connected to the sliding block 3 and the end of the second screw rod 8 is rotatably connected to the connecting block 4, the second guide rod 9 is slidably arranged in the sliding block 3 and the end of the second guide rod 9 is fixedly connected to the connecting block 4, and the distance between the connecting block 4 and the sliding block 3 can be changed by the second screw rod 8 and the second guide rod 9, thereby adjusting the distance between the lumbar support 5 and the sliding block 3.

As shown in Figures 1 and 2, the connecting block 4 is provided with a rotating assembly for adjusting the rotation angle of the lumbar support 5, and the rotating assembly includes a fixed rod 10, a rotating block 11, a clamping rod 12 and a spring 13. The fixed rod 10 is fixed on the connecting block 4, and the lumbar support 5 is rotatably arranged on the fixed rod 10. The rotating block 11 is fixed on one side of the lumbar support 5 and the rotating block 11 is sleeved on the fixed rod 10. A plurality of clamping grooves 14 are opened on the rotating block 11. The clamping rod 12 is slidably penetrated on the connecting block 4 and the clamping rod 12 is clamped with the clamping groove 14. The spring 13 is fixed between the clamping rod 12 and the connecting block 4. The clamping rod 12 is disengaged from the clamping groove 14 to allow the rotating block 11 to rotate on the fixed rod 10, thereby adjusting the rotation angle of the lumbar support 5. The clamping rod 12 and the clamping groove 14 can be re-clamped by the spring 13 to achieve the locking of the rotating block 11 after rotation, and then the angle of the lumbar support 5 after rotation is locked.

As shown in Figures 1 and 3, the lumbar support 5 includes a rotating plate 15 and a mounting plate 16. The rotating plate 15 is rotatably arranged on the fixing rod 10 and the rotating block 11 is fixedly arranged on the rotating plate 15. The mounting plate 16 is detachably arranged on the side of the rotating plate 15 away from the seat back frame 1 and is covered with a filler 19 for supporting the waist. The mounting plate 16 and the rotating plate 15 are detachably connected by bolts. The mounting plate 16 can be covered with fillers such as mesh, sponge and cloth, so that the user can have a good riding experience. Support plates 17 are rotatably arranged on opposite sides of the rotating plate 15. Torsion springs 18 are fixedly arranged at the connection between the two support plates 17 and the rotating plate 15. The support plates 17 can provide certain support to both sides of the lumbar support 5 under the action of the torsion springs 18.

Working principle:

When the user leans on the chair back frame 1, the filler 19 on the mounting plate 16 can support the user's waist. When the user needs to change the vertical height of the lumbar support 5, the user can rotate the first screw 6, and the first screw 6 drives the sliding block 3 to move in the guide rail 2, thereby adjusting the vertical height position of the lumbar support 5, so that the waists of different users can be effectively supported.

When the user needs to change the length distance between the lumbar support 5 and the sliding block 3, the user can rotate the second screw 8. The rotation of the second screw 8 drives the lumbar support 5 to move away from or closer to the sliding block 3, thereby changing the distance between the lumbar support 5 and the sliding block 3 by moving the position of the lumbar support 5, thereby facilitating the user to adjust the lateral position of the lumbar support 5 so that the lumbar support 5 fits the user's waist more closely.

When the user needs to change the supporting angle of the lumbar support 5, the user can pull the clamping rod 12, and the clamping rod 12 can slide on the connecting block 4, so that the clamping rod 12 is disengaged from the clamping groove 14 on the rotating block 11, and then the user can rotate the lumbar support 5 on the fixed rod 10. When the lumbar support 5 is rotated to a suitable angle, the user releases the clamping rod 12, and the clamping rod 12 is re-engaged with the clamping groove 14 under the action of the spring 13, thereby locking the rotated lumbar support 5.

When the lumbar support 5 is used for a long time, the user can remove the mounting plate 16 from the rotating plate 15 by bolts, and the user can clean the filler 19 on the mounting plate 16. The support plates 17 on both sides of the rotating plate 15 can support the user's waist under the action of the torsion springs 18, thereby improving the user's riding experience.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims (6)

1. The utility model provides a seat waist is leaned on with adjustable, its characterized in that, including back of the chair frame (1), all set firmly guide rail (2) on back of the chair frame (1) opposite both sides inner wall, two it is equipped with sliding block (3) to slide between guide rail (2), back of the chair frame (1) are used for relying on one side to be equipped with connecting block (4), on connecting block (4) and one side rotation of keeping away from back of the chair frame (1) is equipped with waist and leans on (5), be equipped with on guide rail (2) and be used for adjusting waist and lean on (5) high altitude mixture control subassembly, be equipped with between connecting block (4) and sliding block (3) and be used for adjusting the length adjustment subassembly of distance between waist lean on (5) and the back of the chair frame (1), be equipped with on connecting block (4) and be used for adjusting waist and lean on (5) turned angle's rotating assembly.

2. An adjustable seat lumbar as set forth in claim 1, wherein: the height adjusting assembly comprises a first screw rod (6) and a first guide rod (7), wherein the first screw rod (6) is vertically rotated to be arranged in one guide rail (2) and the sliding block (3) is in threaded connection with the first screw rod (6), and the first guide rod (7) is vertically fixedly arranged in the other guide rail (2) and the sliding block (3) is in sliding connection with the first guide rod (7).

3. An adjustable seat lumbar as set forth in claim 1, wherein: the length adjusting assembly comprises a second screw rod (8) and a second guide rod (9), the second screw rod (8) is in threaded connection with the sliding block (3), the end part of the second screw rod (8) is rotationally connected with the connecting block (4), and the second guide rod (9) is slidably arranged in the sliding block (3) and the end part of the second guide rod (9) is fixedly connected with the connecting block (4).

4. An adjustable seat lumbar as set forth in claim 1, wherein: the utility model provides a rotating assembly includes dead lever (10), rotating block (11), clamping rod (12) and spring (13), dead lever (10) set firmly on connecting block (4), waist is leaned on (5) rotation to locate on dead lever (10), rotating block (11) set firmly in waist lean on (5) one side and rotating block (11) cover locate on dead lever (10), a plurality of joint grooves (14) have been seted up on rotating block (11), clamping rod (12) slip wears to locate on connecting block (4) and clamping rod (12) and joint groove (14) joint, spring (13) set firmly between clamping rod (12) and connecting block (4).

5. An adjustable seat lumbar as set forth in claim 4, wherein: the waist rest (5) comprises a rotating plate (15) and a mounting plate (16), wherein the rotating plate (15) is rotationally arranged on the fixed rod (10) and the rotating block (11) is fixedly arranged on the rotating plate (15), and the mounting plate (16) is detachably arranged on one side, far away from the chair back frame (1), of the rotating plate (15) and the mounting plate (16) is coated with a filler (19) for supporting the waist.

6. An adjustable seat lumbar as set forth in claim 5, wherein: the two opposite sides of the rotating plate (15) are respectively provided with a supporting plate (17) in a rotating way, and torsion springs (18) are fixedly arranged at the joints of the two supporting plates (17) and the rotating plate (15).