A reclining chair with adjustable back height

Abstract

The utility model discloses a kind of leisure chairs of adjustable chair back height, the utility model relates to chair technical field.The leisure chair of adjustable chair back height, comprising: chair seat and chair back, for supporting human body;Extension component, for lengthening the length of chair back;Headrest and lumbar pillow, respectively for supporting the neck and waist of user;First adjusting assembly and second adjusting assembly, headrest and lumbar pillow are slidably installed in the inner side of chair back by first adjusting assembly and second adjusting assembly respectively;By adjusting the height and length of chair back, and the position of headrest and lumbar pillow, user can be personalized according to own height and sitting posture habit adjustment, to obtain the best back, neck and waist support, reduce the discomfort and fatigue brought by long time sitting.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, specifically to a leisure chair with an adjustable backrest height. Background Technology

[0002] Lounge chairs, as an important component of modern home and office spaces, are designed to provide users with a relaxed and comfortable sitting or reclining experience. They integrate ergonomic principles with stylish aesthetic design, not only meeting basic rest needs but also becoming a significant element in enhancing the quality of life and the work environment.

[0003] CN217488090U discloses a seat with an adjustable backrest height. The device includes a base, with a first groove on the left side of the upper surface of the base. A rotating rod is rotatably connected to both the front and rear sides of the inner wall of the first groove. A mounting plate is fixedly connected to the rod wall. Multiple lower backrests are positioned above the mounting plate, with the upper surface of the mounting plate fixedly connected to the lower surface of the lower backrests. An upper backrest is positioned above the upper lower backrests. Each of the upper surfaces of the lower backrests has a threaded groove, and a lead screw is threaded into the inner wall of each threaded groove. This device allows for backrest height adjustment based on the user's height when adjusting the backrest.

[0004] As shown in the above technology, the height of the chair back can be adjusted according to one's own height. However, the positions of the headrest and lumbar support are fixed in this solution, and cannot be personalized according to the user's body shape and sitting posture needs. Different users have different heights, body shapes and sitting habits. Fixed headrests and lumbar supports cannot provide the best support for all users. For users who need special support for their neck and waist, this design may cause discomfort or even pain after prolonged use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a leisure chair with an adjustable backrest height, solving the problem that the positions of the headrest and lumbar support cannot be freely adjusted in existing devices.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adjustable backrest chair, comprising:

[0007] A chair seat is used to support the buttocks and thighs of the human body.

[0008] The chair back is rotatably mounted on the right side of the chair seat to support the back of the human body and reduce back fatigue.

[0009] An extension assembly, which is mounted on the chair back and used to extend the length of the chair back;

[0010] The headrest and lumbar support are used to support the user's neck and waist respectively, improving the user's comfort and health. Both the headrest and the lumbar support are slidably installed on the inside of the chair back.

[0011] A first adjustment component and a second adjustment component are fixedly installed on the outer side of the chair back, and the headrest and the lumbar support are slidably installed on the inner side of the chair back through the first adjustment component and the second adjustment component, respectively.

[0012] Preferably, the chair back is divided into a lower chair back and an upper chair back. The extension assembly includes an extension plate, which is fixedly installed at the bottom of the upper chair back. A sliding groove is provided on the lower chair back, and the extension plate is slidably installed in the sliding groove. A first motor is fixedly installed on the outer side of the upper chair back, and a first lead screw is fixedly installed at the output end of the first motor. A threaded block is fixedly installed on the outer side of the lower chair back, and the threaded block is threaded onto the first lead screw.

[0013] Preferably, the first adjustment component includes a first mounting member, the headrest is mounted on the first mounting member, two first connecting members are fixedly mounted on the outer side of the upper chair back, a second lead screw is rotatably mounted in each of the two first connecting members, the two ends of the first mounting member are respectively threaded onto the two second lead screws, a second motor is fixedly mounted at the bottom of each of the two first connecting members, and the output end of the second motor passes through the first connecting member and is fixedly connected to the second lead screw.

[0014] Preferably, the second adjustment component includes a second mounting member, the lumbar pillow is mounted on the second mounting member, two second connecting members are fixedly mounted on the outer side of the lower backrest, a third lead screw is rotatably mounted in each of the two second connecting members, the two ends of the second mounting member are respectively threaded onto the two third lead screws, a third motor is fixedly mounted at the bottom of each of the two second connecting members, and the output end of the third motor passes through the second connecting member and is fixedly connected to the third lead screw.

[0015] Preferably, a mounting seam is formed between the second mounting member and the chair back, and the first adjusting component is slidably mounted at the mounting seam.

[0016] Preferably, a fourth motor is fixedly installed on the chair seat, a fourth lead screw is fixedly installed at the output end of the fourth motor, the fourth lead screw is rotatably installed on the chair seat, a bushing is threaded onto the fourth lead screw, the chair back is rotatably installed on the chair seat through the bushing, two gears are fixedly installed on the bushing, and two tooth grooves that mesh with the gears are formed on the chair back.

[0017] Preferably, armrests are rotatably mounted on both the front and rear sides of the chair seat, a control panel is fixedly mounted on one of the armrests, and a battery box is fixedly mounted on the bottom of the chair seat. The first motor, the fourth motor, the two second motors, and the two third motors are all electrically connected to the control panel and the battery box.

[0018] Beneficial effects

[0019] This utility model provides a lounge chair with an adjustable backrest height. Compared with the prior art, it has the following advantages:

[0020] 1. This adjustable backrest chair allows users to personalize their chair according to their height and sitting habits by adjusting the height and length of the backrest, as well as the position of the headrest and lumbar support, thereby obtaining optimal back, neck and waist support and reducing discomfort and fatigue caused by sitting for long periods of time.

[0021] 2. This adjustable backrest chair allows users to adjust the backrest angle according to their height, body type, and sitting habits to achieve the best support and comfort. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0024] Figure 3 This utility model Figure 1 Rear view;

[0025] Figure 4 This is a schematic diagram showing the disassembly of the lower chair back and the upper chair back in this utility model;

[0026] Figure 5 This is a partial disassembly diagram of the seat and backrest in this utility model.

[0027] In the diagram: 1. Seat; 2. Backrest; 21. Lower backrest; 22. Upper backrest; 3. Extension assembly; 31. Extension plate; 32. Slide groove; 33. First motor; 34. First lead screw; 35. Threaded block; 4. Headrest; 5. Lumbar support; 6. First adjustment assembly; 61. First mounting piece; 62. First connecting piece; 63. Second lead screw; 64. Second motor; 7. Second adjustment assembly; 71. Second mounting piece; 72. Second connecting piece; 73. Third lead screw; 74. Third motor; 8. Mounting seam; 9. Fourth motor; 10. Fourth lead screw; 11. Bushing; 12. Gear; 13. Gear groove; 14. Armrest; 15. Control panel; 16. Battery box. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] See Figure 1 - Figure 5 This utility model provides the following two technical solutions:

[0030] First implementation: A lounge chair with an adjustable backrest height, comprising:

[0031] Seat 1, used to support the buttocks and thighs of the human body;

[0032] The chair back 2 is rotatably mounted on the right side of the seat 1 to support the back of the human body and reduce back fatigue.

[0033] Extension component 3 is installed on the backrest 2 to extend the length of the backrest 2;

[0034] The headrest 4 and lumbar pillow 5 are used to support the user's neck and waist respectively, improving the user's comfort and health. Both the headrest 4 and lumbar pillow 5 are slidably installed on the inside of the chair back 2.

[0035] The first adjustment component 6 and the second adjustment component 7 are both fixedly installed on the outside of the chair back 2. The headrest 4 and the lumbar pillow 5 are slidably installed on the inside of the chair back 2 through the first adjustment component 6 and the second adjustment component 7, respectively.

[0036] The chair back 2 is divided into a lower chair back 21 and an upper chair back 22. The extension assembly 3 includes an extension plate 31, which is fixedly installed at the bottom of the upper chair back 22. A sliding groove 32 is provided on the lower chair back 21, and the extension plate 31 is slidably installed in the sliding groove 32. A first motor 33 is fixedly installed on the outer side of the upper chair back 22, and a first lead screw 34 is fixedly installed at the output end of the first motor 33. A threaded block 35 is fixedly installed on the outer side of the lower chair back 21, and the threaded block 35 is threaded onto the first lead screw 34.

[0037] The first adjustment component 6 includes a first mounting member 61, a headrest 4 mounted on the first mounting member 61, and two first connecting members 62 fixedly mounted on the outer side of the upper backrest 22. A second lead screw 63 is rotatably mounted inside each of the two first connecting members 62. The two ends of the first mounting member 61 are respectively threaded onto the two second lead screws 63. A second motor 64 is fixedly mounted at the bottom of each of the two first connecting members 62. The output end of the second motor 64 passes through the first connecting member 62 and is fixedly connected to the second lead screw 63.

[0038] The second adjustment component 7 includes a second mounting piece 71, a lumbar pillow 5 mounted on the second mounting piece 71, and two second connecting pieces 72 fixedly mounted on the outer side of the lower backrest 21. A third lead screw 73 is rotatably mounted inside each of the two second connecting pieces 72. The two ends of the second mounting piece 71 are respectively threaded onto the two third lead screws 73. A third motor 74 is fixedly mounted at the bottom of each of the two second connecting pieces 72. The output end of the third motor 74 passes through the second connecting piece 72 and is fixedly connected to the third lead screw 73.

[0039] A mounting seam 8 is formed between the second mounting component 71 and the backrest 2, and the first adjustment component 6 is slidably mounted at the mounting seam 8.

[0040] By using the first motor 33 to drive the first lead screw 34 to rotate, and since the threaded block 35 is threaded onto the first lead screw 34, when the first lead screw 34 rotates, the upper backrest 22 moves up and down relative to the lower backrest 21, thereby adjusting the overall height of the backrest 2. By using the second motor 64 to drive the second lead screw 63 to rotate, and since both ends of the first mounting member 61 are threaded onto the two second lead screws 63 respectively, when the second lead screw 63 rotates, it drives the first mounting member 61 and the headrest 4 connected to it to move axially along the second lead screw 63, thereby adjusting the position of the headrest 4. By using the third motor 74 to drive... The rotation of the third lead screw 73 causes the second mounting component 71 and the lumbar pillow 5 connected to it to move axially along the third lead screw 73, adjusting the position of the lumbar pillow 5. An installation gap 8 is formed between the second mounting component 71 and the backrest 2, which allows the first adjustment component 6 and its mounted headrest 4 to slide in this gap without interference, ensuring the independent adjustment function of the headrest 4 and the lumbar pillow 5. By adjusting the height and length of the backrest 2, as well as the position of the headrest 4 and the lumbar pillow 5, users can make personalized adjustments according to their height and sitting habits, thereby obtaining the best back, neck and waist support and reducing discomfort and fatigue caused by sitting for a long time.

[0041] The second embodiment differs from the first embodiment in that: a fourth motor 9 is fixedly installed on the seat 1, a fourth lead screw 10 is fixedly installed at the output end of the fourth motor 9, the fourth lead screw 10 is rotatably installed on the seat 1, a bushing 11 is threaded onto the fourth lead screw 10, the backrest 2 is rotatably installed on the seat 1 through the bushing 11, two gears 12 are fixedly installed on the bushing 11, and two tooth grooves 13 that mesh with the gears 12 are opened on the backrest 2.

[0042] Armrests 14 are rotatably mounted on both the front and rear sides of the seat 1. A control panel 15 is fixedly mounted on one of the armrests 14. A battery box 16 is fixedly mounted on the bottom of the seat 1. The first motor 33, the fourth motor 9, the two second motors 64 and the two third motors 74 are all electrically connected to the control panel 15 and the battery box 16.

[0043] The fourth motor 9 drives the fourth lead screw 10 to rotate. Since the bushing 11 is threaded onto the fourth lead screw 10, when the fourth lead screw 10 rotates, it will drive the bushing 11 and the two gears 12 to move axially along the fourth lead screw 10, thereby adjusting the position of the two gears 12. When it is necessary to adjust the angle of the chair back 2, the gears 12 are disengaged from the tooth groove 13, and the chair back 2 can be rotated. After adjustment, the fourth motor 9 makes the gears 12 mesh with the tooth groove 13, which can fix the chair back 2, realizing flexible adjustment of the angle of the chair back 2. Users can adjust the angle of the chair back 2 according to their height, body shape and sitting posture habits to obtain the best support and comfort. By rotating the armrest 14, users can easily adjust the position of the headrest 4 and lumbar support 5 through the control panel 15. The power box 16 can provide the necessary power for the device.

[0044] Furthermore, all content not described in detail in this specification is existing technology known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used.

[0045] In use, the first motor 33 is adjusted via the control panel 15 to drive the first lead screw 34 to rotate, so that the upper backrest 22 moves up and down relative to the lower backrest 21 to a suitable height; the second motor 64 and the third motor 74 are adjusted via the control panel 15 to drive the second lead screw 63 and the third lead screw 73 to rotate, so that the headrest 4 and the lumbar support 5 move along the axis of the second lead screw 63 and the third lead screw 73 to a suitable position, thereby adjusting the position of the headrest 4 and the lumbar support 5; the fourth motor 9 is adjusted via the control panel 15 to drive the fourth lead screw 10 to rotate, so that the bushing 11 and the gear 12 move along the lead screw, disengage from the tooth groove 13, and the backrest 2 is manually rotated to a suitable angle, and then the fourth motor 9 is adjusted to re-engage and fix the gear 12 with the tooth groove 13, thereby adjusting the angle of the backrest 2.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lounge chair with an adjustable backrest height, characterized in that, include: A chair seat is used to support the buttocks and thighs of the human body. The chair back is rotatably mounted on the right side of the chair seat to support the back of the human body and reduce back fatigue. An extension assembly, which is mounted on the chair back and used to extend the length of the chair back; The headrest and lumbar support are used to support the user's neck and waist respectively, improving the user's comfort and health. Both the headrest and the lumbar support are slidably installed on the inside of the chair back. A first adjustment component and a second adjustment component are fixedly installed on the outer side of the chair back, and the headrest and the lumbar support are slidably installed on the inner side of the chair back through the first adjustment component and the second adjustment component, respectively.

2. The adjustable backrest chair according to claim 1, characterized in that: The chair back is divided into a lower chair back and an upper chair back. The extension assembly includes an extension plate, which is fixedly installed at the bottom of the upper chair back. A sliding groove is provided on the lower chair back, and the extension plate is slidably installed in the sliding groove. A first motor is fixedly installed on the outer side of the upper chair back, and a first lead screw is fixedly installed at the output end of the first motor. A threaded block is fixedly installed on the outer side of the lower chair back, and the threaded block is threaded onto the first lead screw.

3. The adjustable backrest height lounge chair according to claim 2, characterized in that: The first adjustment component includes a first mounting member, the headrest is mounted on the first mounting member, two first connecting members are fixedly mounted on the outer side of the upper chair back, and a second lead screw is rotatably mounted in each of the two first connecting members. The two ends of the first mounting member are respectively threaded onto the two second lead screws, and a second motor is fixedly mounted on the bottom of each of the two first connecting members. The output end of the second motor passes through the first connecting member and is fixedly connected to the second lead screw.

4. A reclining chair with an adjustable backrest height according to claim 3, characterized in that: The second adjustment component includes a second mounting piece, the lumbar pillow is mounted on the second mounting piece, two second connecting pieces are fixedly mounted on the outer side of the lower backrest, and a third lead screw is rotatably mounted in each of the two second connecting pieces. The two ends of the second mounting piece are respectively threaded onto the two third lead screws, and a third motor is fixedly mounted at the bottom of each of the two second connecting pieces. The output end of the third motor passes through the second connecting piece and is fixedly connected to the third lead screw.

5. A reclining chair with an adjustable backrest height according to claim 4, characterized in that: A mounting seam is formed between the second mounting member and the chair back, and the first adjustment component is slidably mounted at the mounting seam.

6. A reclining chair with an adjustable backrest height according to claim 4, characterized in that: A fourth motor is fixedly installed on the seat, and a fourth lead screw is fixedly installed on the output end of the fourth motor. The fourth lead screw is rotatably installed on the seat, and a bushing is threaded onto the fourth lead screw. The backrest is rotatably installed on the seat through the bushing. Two gears are fixedly installed on the bushing, and two tooth grooves that mesh with the gears are formed on the backrest.

7. A reclining chair with an adjustable backrest height according to claim 6, characterized in that: Armrests are rotatably mounted on both the front and rear sides of the chair seat. A control panel is fixedly mounted on one of the armrests. A battery box is fixedly mounted on the bottom of the chair seat. The first motor, the fourth motor, the two second motors, and the two third motors are all electrically connected to the control panel and the battery box.

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