Self-adaptive portable attached seat waist rest and seat

Abstract

The self-adaptive portable attached seat waist rest comprises a seat backrest framework, a waist rest body, a supporting arm and a driving mechanism, the lower end of the supporting arm is fixed to the waist rest body, the upper end of the supporting arm is rotationally connected with the seat backrest framework, the driving mechanism comprises a driving end and a fixing end, the driving end is arranged towards the upper portion of the seat backrest framework, and the fixing end is arranged towards the lower portion of the seat backrest framework. The driving mechanism is rotationally connected with the seat backrest framework through the fixed end and rotationally connected with the supporting arm through the driving end, and the driving mechanism is further provided with a control element; the driving end of the driving mechanism can drive the supporting arm to turn over along with opening and closing of the control element, and stepless adjustment of the elevation angle of the waist rest body is indirectly driven. Through the structural design and reasonable layout of the supporting arms, under the action of the driving mechanism, stepless adjustment (such as 0-45-degree adjustment) of the elevation angle of the waist and back body can be achieved, and the comfort of a user is improved. The waist rest body is in a pitching-up state, accords with the human engineering principle and is well attached to the back of a user.

Description

Technical Field

[0001] The invention relates to an adaptive portable fitting chair lumbar support and a seat, belonging to the technical field of seat components and seats. Background Art

[0002] As furniture closely related to human life, chairs bring convenience to human work and meet the needs of daily desk work. The lumbar support of existing chairs is either fixed and cannot be adjusted, or needs to be manually adjusted to achieve a position suitable for the back posture. However, during the adjustment process of the existing lumbar support, the user's back is away from the lumbar support (the reason is that the components that drive the lumbar support to rotate mostly use torsion springs that cannot support the weight of the back). Therefore, the user can only rely on repeated adjustments and repeated leaning. This method is extremely inconvenient and often cannot be adjusted to the most comfortable position. After adjustment, the lumbar support posture is fixed and will not change with the user's sitting posture, resulting in discomfort for long-term leaning. In addition, the existing lumbar support adjustment often changes the posture by rotating the hinge angle of the lumbar support and the seat cushion. When the adjustment range is large, it seriously affects the user's experience.

[0003] The Chinese utility model patent with authorization announcement date of July 12, 2022 and authorization announcement number CN216932462U discloses a self-adhering back-chasing lumbar support, including a support frame, a lumbar support board, and a support rod. The upper end of the support rod is hinged with an upper hinged accessory, one end of the upper hinged accessory is fixed to the middle part of the support frame, and the lower end of the support rod is hinged with a lower hinged accessory. The lumbar support board is fixed to the lower hinged accessory by bolts, and a drive assembly is hinged on the support frame, and one end of the drive assembly is hinged to the support rod through a hinge column. The utility model drives the pneumatic support rod (or hydraulic telescopic rod or electric telescopic rod) to move through a switch and drives the support rod to rotate around its upper end hinge point. Since the support rod has two parts that will ensure that the lumbar support board moves forward at an unchanged elevation angle under the action of reverse torsion, the lumbar support board can always be close to the user's waist and back, providing stable support for it and helping it to maintain a good sitting posture. The utility model still has the following shortcomings: it can only ensure that the lumbar support plate moves forward at a constant elevation angle under the action of reverse twisting by two supporting rods, so that the lumbar support plate can always be close to the user's waist and back, provide a stable support force and help the user maintain a good sitting posture, but cannot achieve stepless adjustment of the elevation angle of the waist and back body, and cannot achieve stepless adjustment of the circumferential multi-angle of the waist and back to facilitate the user to adjust the sitting posture adaptively. The utility model aims to solve this technical problem by changing the adjustment structure of the lumbar support and changing the assembly connection method to achieve adaptive adjustment of the lumbar support. Summary of the invention

[0004] One of the purposes of the present invention is to solve the shortcomings of the prior art that the lumbar support of a seat is fixed and cannot be adjusted, or that its angle and up and down position need to be manually adjusted to reach a position suitable for the back posture, or that it can only achieve stepless adjustment of the waist and back up and down, and to provide an adaptive, portable and fitting seat lumbar support that can conveniently achieve stepless adjustment of the waist and back angle.

[0005] The second object of the present invention is to provide a seat equipped with the lumbar support of the seat of the present invention. The seat changes the assembly connection method based on the adjustment structure of the lumbar support to achieve stepless adjustment of the waist and back angles, and the preferred scheme can achieve convenient multi-directional stepless adjustment of the lumbar support, greatly improving the convenience and comfort of the seat use.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] An adaptive portable fit seat lumbar support comprises a seat back frame, a lumbar support body, a support arm and a driving mechanism, wherein the lower end of the support arm is fixed to the lumbar support body, and the upper end is rotatably connected to the seat back frame, the driving mechanism comprises a driving end and a fixed end, the driving end is arranged toward the upper part of the seat back frame, is rotatably connected to the seat back frame through the fixed end, and is rotatably connected to the support arm through the driving end, and the driving mechanism is further provided with a control element;

[0008] The driving end of the driving mechanism can drive the support arm to flip as the control element is opened and closed, thereby indirectly driving the stepless adjustment of the elevation angle of the lumbar support body.

[0009] As mentioned above, the existing seat lumbar support is fixed and cannot be adjusted, or requires manual adjustment of its angle and up and down position to achieve a position suitable for the back posture, or can only achieve stepless adjustment of the waist and back up and down. Provided is an adaptive portable fitting seat lumbar support that can achieve stepless adjustment of the waist and back reclining angle. The technical solution of the present invention, through the structural design and reasonable layout of the support arm, can achieve stepless adjustment of the reclining angle of the waist and back body under the action of the driving mechanism, thereby improving the comfort of the user.

[0010] Preferably, the driving mechanism is a telescopic driving assembly, including any one of a pneumatic telescopic driving assembly, a hydraulic telescopic driving assembly and an electric telescopic driving assembly, the seat back frame is provided with a driving assembly fixing, and the fixed end of the driving mechanism is rotatably connected to the driving assembly fixing. The pneumatic telescopic driving assembly, the hydraulic telescopic driving assembly and the electric telescopic driving assembly are all commonly used driving mechanisms, with simple structures, convenient maintenance and installation, and convenient manual operation.

[0011] Preferably, the telescopic drive assembly is a pneumatic telescopic drive assembly, the control element is a pneumatic telescopic rod control cable, and the drive assembly fixing member is a fixed cross bar provided on the seat back frame.

[0012] Preferably, a control handle for easy pulling is fixedly provided on the movable end of the pneumatic telescopic rod control pull wire.

[0013] Preferably, the lumbar support body and the support arm are indirectly fixed by a flexible connector made of a flexible material that can deform in multiple directions, one end of the flexible connector is fixed to the lumbar support body, and the other end is fixed to the support arm. Under this preferred solution structure, the lumbar support body can be adjusted in multiple directions in 360° circumferential direction.

[0014] Preferably, the flexible connector is a rubber flexible connector or a silicone flexible connector or a spring flexible connector, and / or the flexible connector is provided with penetrating honeycomb structure holes.

[0015] Preferably, the seat back frame is fixedly provided with a support arm fixing piece, the support arm and the support arm fixing piece are rotatably connected, and the support arm fixing piece is another fixed cross bar provided on the seat back frame.

[0016] Preferably, the support arm is provided with a receiving cavity, and when the support arm and the telescopic drive assembly are folded toward each other, the fixed end of the telescopic drive assembly can be embedded in the receiving cavity, so that the thickness of the side surface after storage is smaller, which is convenient for storage, space saving, and transportation.

[0017] Preferably, the longitudinal section of the lumbar support body is in an arch shape, the upper end is the first lumbar support part, the lower end is the second lumbar support part, the first lumbar support part and the second lumbar support part are in an arc transition, the connection point between the support arm and the lumbar support body is at the transition part, and the connection point between the drive end and the support arm is higher than the connection point between the support arm and the lumbar support body. Through the design of this structure, the lumbar support body is in an upward tilted state, and conforms to the principle of ergonomics, fits well with the back of the user, is convenient to adjust the tilt angle, has high reliability, and when it needs to be reset, the user can easily achieve it by squeezing the lumbar support body with the back.

[0018] A seat includes a seat body and a lumbar support structure, adopts the adaptive portable fitting seat lumbar support described above, a frame fixing piece is fixedly arranged at the lower end of the seat back frame, and the seat back frame is fixedly connected to the seat body through the frame fixing piece.

[0019] The beneficial effects of the present invention are as follows: the technical solution of the present invention, through the structural design and reasonable layout of the support arm, can realize stepless adjustment of the inclination angle of the waist and back body (such as 0-45° adjustment) under the action of the driving mechanism, thereby improving the comfort of the user. The seat equipped with the multi-directional stepless adjustment seat waist support of the present invention has the waist support body in an upward tilted state, and conforms to the principle of ergonomics, and fits well with the back of the user. It is convenient and reliable to adjust the inclination angle, and when it needs to be reset, the user can easily achieve it by squeezing the waist support body with the back. The waist support body can be adaptively rotated to the angle required by the body according to the waist of the human body. In daily use, whether sitting forward or backward, the most comfortable distance can be achieved, and the waist support body is always kept in close contact with the waist and back. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention 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 only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the structure of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the present invention.

[0028] The markings in the accompanying drawings are described as follows: 1. seat back frame, 2. fixed cross bar, 3. fixed cross bar, 4. support arm, 5. lumbar support body, 6. pneumatic telescopic drive assembly, 7. control element, 8. first fixing accessory, 9. second fixing accessory, 10. third fixing accessory, 11 (12 and 13, 14), screw, 15. nut. DETAILED DESCRIPTION

[0029] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0030] Example: Figure 1-7 As shown, an adaptive portable fitting seat lumbar support comprises a seat back frame 1, a lumbar support body 5, a support arm 4 and a driving mechanism, wherein the lower end of the support arm 4 is fixed to the lumbar support body 5, and the upper end is rotatably connected to the seat back frame 1, the driving mechanism comprises a driving end and a fixed end, the driving end is arranged toward the upper side of the seat back frame 1, is rotatably connected to the seat back frame 1 through the fixed end, and is rotatably connected to the support arm 4 through the driving end, and the driving mechanism is further provided with a control element 7;

[0031] The driving end of the driving mechanism can drive the support arm 4 to flip as the control element 7 is opened and closed, and indirectly drive the stepless adjustment of the elevation angle of the lumbar support body 5.

[0032] As mentioned above, the lumbar support of the seat in the prior art is fixed and cannot be adjusted, or its angle and up and down position need to be adjusted manually to reach a position suitable for the back posture, or it can only achieve stepless adjustment of the waist and back up and down. The present invention provides an adaptive portable fitting seat lumbar support that can achieve stepless adjustment of the waist and back reclining angle. The technical solution of the present invention, through the structural design and reasonable layout of the support arm 4, can achieve stepless adjustment of the reclining angle of the waist and back body under the action of the driving mechanism, thereby improving the comfort of the user. In this embodiment, the rotation connection can be a hinged connection or a shaft connection, and those skilled in the art can make conventional selections according to needs.

[0033] Specifically, the driving mechanism is a telescopic driving assembly, including any one of a pneumatic telescopic driving assembly 6, a hydraulic telescopic driving assembly and an electric telescopic driving assembly. The seat back frame 1 is provided with a driving assembly fixing member, and the fixed end of the driving mechanism is rotatably connected to the driving assembly fixing member. The pneumatic telescopic driving assembly 6, the hydraulic telescopic driving assembly and the electric telescopic driving assembly are all commonly used driving mechanisms, with simple structures, convenient maintenance and installation, and convenient manual operation.

[0034] Specifically, the telescopic drive assembly is a pneumatic telescopic drive assembly 6, the control element 7 is a pneumatic telescopic rod control cable, and the drive assembly fixing member is a fixed cross bar 3 arranged on the seat back frame.

[0035] Specifically, a control handle for easy pulling is fixedly provided at the movable end of the pneumatic telescopic rod control pull wire.

[0036] Specifically, the lumbar support body 5 and the support arm 4 are indirectly fixed by a flexible connector made of a flexible material that can deform in multiple directions, one end of the flexible connector is fixed to the lumbar support body 5, and the other end is fixed to the support arm 4. Under the structure of this preferred solution, the lumbar support body 5 can be adjusted in multiple directions in 360° circumferential direction.

[0037] In this embodiment, the flexible connector is a rubber flexible connector or a silicone flexible connector or a spring flexible connector, and / or the flexible connector is provided with penetrating honeycomb structure holes.

[0038] In this embodiment, the seat back frame 1 is fixed with a support arm fixing piece, and the support arm 4 is rotationally connected to the support arm fixing piece, specifically a hinged connection or a rotating shaft connection is selected, and the support arm fixing piece is another fixed cross bar 2 arranged on the seat back frame 1.

[0039] In this embodiment, the support arm 4 is provided with a receiving cavity, and when the support arm 4 and the telescopic drive assembly are folded toward each other, the fixed end of the telescopic drive assembly can be embedded in the receiving cavity, so that the thickness of the side surface of the present invention is smaller after storage, which is convenient for storage, space saving, and transportation.

[0040] In this embodiment, the longitudinal section of the lumbar support body 5 is in an arch shape, the upper end is the first lumbar support part, the lower end is the second lumbar support part, the first lumbar support part and the second lumbar support part are in an arc transition, the connection point between the support arm 4 and the lumbar support body 5 is at the transition part, and the connection point between the drive end and the support arm 4 is higher than the connection point between the support arm 4 and the lumbar support body 5. Through the design of this structure, the lumbar support body 5 is in an upward tilted state, and conforms to the principle of ergonomics, fits well with the back of the user, is convenient to adjust the tilt angle, has high reliability, and when it needs to be reset, the user can easily achieve it by squeezing the lumbar support body 5 with the back.

[0041] The present invention also provides a seat, including a seat body and a lumbar support structure, which adopts the adaptive portable fitting seat lumbar support described above, and a frame fixing part is fixedly arranged at the lower end of the seat back frame 1, and the seat back frame is fixedly connected to the seat body through the frame fixing part.

[0042] The beneficial effects of the present invention are as follows: the technical solution of the present invention, through the structural design and reasonable layout of the support arm 4, can realize stepless adjustment of the back body elevation angle (such as 0-45° adjustment) under the action of the driving mechanism, thereby improving the comfort of the user. The seat equipped with the multi-directional stepless adjustment seat lumbar support of the present invention, the lumbar support body 5 is in an upward tilted state, and conforms to the principle of ergonomics, and fits well with the user's back. It is convenient and reliable to adjust the elevation angle, and when it needs to be reset, the user can easily achieve it by squeezing the lumbar support body 5 with the back. The lumbar support body 5 can be adaptively rotated to the angle required by the body according to the human waist. In daily use, whether sitting forward or backward, the most comfortable distance can be achieved, and the lumbar support body 5 is always kept in close contact with the waist and back.

[0043] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. An adaptive portable seat lumbar support, comprising a seat back frame, a lumbar support body, a support arm and a driving mechanism, characterized in that: The lower end of the support arm is fixed to the lumbar support body, and the upper end is rotatably connected to the seat back frame. The driving mechanism includes a driving end and a fixed end. The driving end is arranged toward the upper side of the seat back frame, and is rotatably connected to the seat back frame through the fixed end, and is rotatably connected to the support arm through the driving end. The driving mechanism is also provided with a control element. The driving end of the driving mechanism can drive the support arm to flip as the control element is opened and closed, thereby indirectly driving the stepless adjustment of the elevation angle of the lumbar support body.

2. The adaptive portable seat lumbar support according to claim 1, characterized in that: The driving mechanism is a telescopic driving assembly, including any one of a pneumatic telescopic driving assembly, a hydraulic telescopic driving assembly and an electric telescopic driving assembly. The seat back frame is provided with a driving assembly fixing, and the fixed end of the driving mechanism is rotatably connected to the driving assembly fixing.

3. The adaptive portable seat lumbar support according to claim 2, characterized in that: The telescopic drive assembly is a pneumatic telescopic drive assembly, the control element is a pneumatic telescopic rod control cable, and the drive assembly fixing piece is a fixed cross bar arranged on the seat back frame.

4. The adaptive portable seat lumbar support according to claim 3, characterized in that: The movable end of the pneumatic telescopic rod control pull wire is fixed with a control handle which is convenient for pulling.

5. The adaptive portable seat lumbar support according to claim 1, characterized in that: The lumbar support body and the support arm are indirectly fixed via a flexible connector made of a flexible material that can deform in multiple directions. One end of the flexible connector is fixed to the lumbar support body, and the other end is fixed to the support arm.

6. The adaptive portable seat lumbar support according to claim 5, characterized in that: The flexible connector is a rubber flexible connector or a silicone flexible connector or a spring flexible connector, and / or the flexible connector is provided with penetrating honeycomb structure holes.

7. The adaptive portable seat lumbar support according to claim 1, characterized in that: The seat back frame is fixedly provided with a support arm fixing piece, the support arm is rotatably connected to the support arm fixing piece, and the support arm fixing piece is another fixed cross bar arranged on the seat back frame.

8. The adaptive portable seat lumbar support according to claim 4, characterized in that: The support arm is provided with a receiving cavity, and when the support arm and the telescopic driving assembly are folded toward each other, the fixed end of the telescopic driving assembly can be embedded in the receiving cavity.

9. The adaptive portable seat lumbar support according to claim 1, characterized in that: The longitudinal section of the lumbar support body is bow-shaped, with the upper end being the first lumbar support portion and the lower end being the second lumbar support portion, an arc-shaped transition between the first lumbar support portion and the second lumbar support portion, the connection point between the support arm and the lumbar support body is at the transition portion, and the connection point between the drive end and the support arm is higher than the connection point between the support arm and the lumbar support body.

10. A seat, comprising a seat body and a lumbar support structure, characterized in that: The adaptive portable fitting seat lumbar support as described in any one of claims 1 to 9 is adopted, a frame fixing piece is fixedly arranged at the lower end of the seat back frame, and the seat back frame is fixedly connected to the seat body through the frame fixing piece.

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