Seat armrest capable of rotating and lifting

Abstract

The utility model discloses a rotatable lifting seat armrest which comprises a mounting seat, one end of the mounting seat is fixedly connected with a vertically arranged supporting cylinder, the outer wall of the supporting cylinder is sleeved and connected with a lifting cylinder in a sliding mode, and an adjusting assembly used for adjusting the height of the lifting cylinder is arranged in the supporting cylinder; a supporting seat is fixedly connected to the top end of the lifting cylinder, a supporting plate is rotationally connected to the supporting seat, and a limiting assembly is arranged on the supporting seat; a disc is fixedly connected to the top end of the supporting plate, a circular groove is formed in the top face of the disc, a plurality of positioning grooves evenly distributed along the circumference of the groove are formed in the bottom face of the groove, a vertically-arranged rotating shaft is fixedly connected to the middle of the bottom face of the groove, the outer wall of the rotating shaft is sleeved with and rotationally connected with a rotating disc, and positioning sheaths matched with the positioning grooves are fixedly connected to the bottom face of the rotating disc. The top surface of the turntable is fixedly connected with a handrail body. According to the utility model, the lifting of the armrest can be realized, and the armrest can rotate in all directions in the horizontal direction and adjust the angle of the armrest surface.

Description

Technical Field

[0001] This utility model relates to the field of seat armrest technology, and in particular to a rotatable and height-adjustable seat armrest. Background Technology

[0002] Armrests are an important part of chair design. Their most basic function is to provide support for the arms and reduce the fatigue caused by the arms being suspended in the air when sitting for a long time. Whether it is an office chair, a dining chair or a sofa, armrests are an indispensable design element of the chair.

[0003] Most existing seat armrests have adjustment functions, such as lateral and longitudinal movement. For example, patent announcement number CN217447156U discloses an armrest mechanism and seat, in which the support member can be rotated and adjusted in angle from different directions to adapt to various usage needs. By moving the support member closer to or away from the first connecting member, the height of the armrest can be adjusted, thus better adapting to various usage needs.

[0004] While the aforementioned utility model patent enables the armrest to rotate and its height to be adjusted, the rotation angle of the armrest is limited, and it cannot achieve omnidirectional rotation in the horizontal direction. Furthermore, the angle of the armrest surface cannot be adjusted; it remains horizontally reversed. When the user raises their arm, it only provides single-point support for the elbow and cannot adjust the angle according to the arm's position, thus failing to effectively alleviate fatigue caused by the arm being suspended in the air.

[0005] Therefore, it is necessary to develop a rotatable and height-adjustable seat armrest to address the aforementioned shortcomings. Utility Model Content

[0006] The purpose of this invention is to provide a rotatable and height-adjustable seat armrest that can raise and lower the armrest, rotate omnidirectionally in the horizontal direction, and adjust the angle of the armrest surface.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This utility model discloses a rotatable and height-adjustable seat armrest, comprising a mounting base, a vertically arranged support cylinder fixedly connected to one end of the mounting base, a lifting cylinder sleeved and slidably connected to the outer wall of the support cylinder, and an adjustment component for adjusting the height of the lifting cylinder disposed inside the support cylinder; a support seat fixedly connected to the top of the lifting cylinder, a support plate rotatably connected to the support seat, and a limit component disposed on the support seat; a disc fixedly connected to the top of the support plate, a circular groove formed on the top surface of the disc, a plurality of positioning grooves evenly distributed along the circumference formed on the bottom surface of the groove, a vertically arranged rotating shaft fixedly connected to the middle position of the bottom surface of the groove, a turntable sleeved and rotatably connected to the outer wall of the rotating shaft, and a positioning sheath adapted to the positioning grooves fixedly connected to the bottom surface of the turntable; and an armrest body fixedly connected to the top surface of the turntable.

[0009] Furthermore, a plurality of positioning holes are provided on one side wall of the support cylinder along its height direction, and an installation hole is provided on the top of the lifting cylinder; the adjustment assembly includes a first connecting plate, which passes through the installation hole and is slidably connected thereto, and a positioning element is fixedly connected to the bottom surface of the first connecting plate.

[0010] Furthermore, the positioning component includes a second connecting plate, which is vertically fixedly connected to the bottom surface of the first connecting plate. The bottom of the second connecting plate extends into the support cylinder, and a limiting block adapted to the positioning hole is fixedly connected to the bottom end of the second connecting plate. A baffle is fixedly connected to one end of the first connecting plate located inside the lifting cylinder, and a compression spring is fixedly connected to the side wall of the baffle away from the mounting hole. The other end of the compression spring is fixedly connected to the inner side wall of the lifting cylinder.

[0011] Furthermore, a sliding plate is fixedly connected directly below the compression spring, one end of the sliding plate is fixedly connected to the inner wall of the lifting cylinder, and the bottom surface of the baffle is slidably connected to the top surface of the sliding plate.

[0012] Furthermore, a button is fixedly connected to one end of the first connecting plate located outside the lifting cylinder.

[0013] Furthermore, the limiting component includes a knob, and a threaded hole is provided through the side wall of the support base. One end of the knob is fixedly connected to a threaded post, which is threadedly connected to the threaded hole and has one end abutting against the side wall of the support plate.

[0014] Furthermore, a limiting plate is fixedly connected to the top end of the rotating shaft.

[0015] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0016] This invention allows for the adjustment of the height of the lifting cylinder through the coordination of the adjusting components, support cylinder, and lifting cylinder. The support base and support plate enable the support plate to rotate on the support base and are limited by a limiting component, thereby adjusting the vertical angle of the handrail body. Simultaneously, by manually lifting the handrail body, the turntable and its bottom positioning sheath disengage from the positioning groove, allowing the handrail body to rotate and adjust its horizontal angle, achieving omnidirectional rotation of the handrail. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a three-dimensional structural diagram of the base and support cylinder of this utility model;

[0020] Figure 3 This is a three-dimensional structural diagram of the adjustment component of this utility model;

[0021] Figure 4 This is a partial structural diagram of the present invention when disassembled;

[0022] Figure 5 This is a cross-sectional view of the present invention;

[0023] Figure 6 for Figure 5 A magnified view of part A in the middle;

[0024] Figure 7 for Figure 5 A magnified view of part B in the middle section.

[0025] Explanation of reference numerals in the attached drawings: 1. Mounting base; 2. Support cylinder; 3. Lifting cylinder; 4. Support base; 5. Support plate; 6. Disc; 7. Groove; 8. Positioning groove; 9. Rotating shaft; 10. Turntable; 11. Positioning sheath; 12. Handrail body; 13. Positioning hole; 14. Mounting hole; 15. First connecting plate; 16. Second connecting plate; 17. Limiting block; 18. Compression spring; 19. Slide plate; 20. Baffle; 21. Button; 22. Knob; 23. Threaded hole; 24. Threaded post; 25. Limiting plate. Detailed Implementation

[0026] The core of this utility model is to provide a rotatable and height-adjustable seat armrest, which can raise and lower the armrest, rotate omnidirectionally in the horizontal direction, and adjust the angle of the armrest surface.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. 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.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In one specific implementation, such as Figures 1-7 As shown, the device includes a mounting base 1, with a vertically arranged support cylinder 2 fixedly connected to one end of the mounting base 1. A lifting cylinder 3 is sleeved and slidably connected to the outer wall of the support cylinder 2. An adjustment component for adjusting the height of the lifting cylinder 3 is provided inside the support cylinder 2. A support seat 4 is fixedly connected to the top of the lifting cylinder 3. The support seat 4 includes a base plate, two support plates, and a rotating shaft. This is prior art and will not be described in detail here. A support plate 5 is rotatably connected to the rotating shaft of the support seat 4. A limit component is provided on the support seat 4. A disc 6 is fixedly connected to the top of the support plate 5. A circular groove 7 is opened on the top surface of the disc 6. Several positioning grooves 8 are evenly distributed along its circumference on the bottom surface of the groove 7. A vertically arranged rotating shaft 9 is fixedly connected to the middle position of the bottom surface of the groove 7. A turntable 10 is sleeved and rotatably connected to the outer wall of the rotating shaft 9. A positioning sheath 11 adapted to the positioning grooves 8 is fixedly connected to the bottom surface of the turntable 10. A handrail body 12 is fixedly connected to the top surface of the turntable 10.

[0030] In one specific embodiment, a plurality of positioning holes 13 are provided on one side wall of the support cylinder 2 along its height direction, and a mounting hole 14 is provided on the top of the lifting cylinder 3. The adjustment assembly includes a first connecting plate 15, which passes through the mounting hole 14 and is slidably connected thereto, and a positioning element is fixedly connected to the bottom surface of the first connecting plate 15.

[0031] Specifically, the positioning component includes a second connecting plate 16, which is vertically fixed to the bottom surface of the first connecting plate 15. The bottom of the second connecting plate 16 extends into the support cylinder 2, and a limiting block 17 adapted to the positioning hole 13 is fixedly connected to the bottom end of the second connecting plate 16. A baffle 20 is fixedly connected to one end of the first connecting plate 15 located inside the lifting cylinder 3. A compression spring 18 is fixedly connected to the side wall of the baffle 20 away from the mounting hole 14, and the other end of the compression spring 18 is fixedly connected to the inner side wall of the lifting cylinder 3.

[0032] Specifically, a slide plate 19 is fixedly connected directly below the compression spring 18, and one end of the slide plate 19 is fixedly connected to the inner wall of the lifting cylinder 3. The bottom surface of the baffle 20 is slidably connected to the top surface of the slide plate 19.

[0033] Specifically, a button 21 is fixedly connected to one end of the first connecting plate 15 located outside the lifting cylinder 3.

[0034] In one specific embodiment, the limiting component includes a knob 22. A threaded hole 23 is provided through the side wall of the support base 4. One end of the knob 22 is fixedly connected to a threaded post 24, which is threaded into the threaded hole 23 and has one end abutting against the side wall of the support plate 5. By rotating the knob 22, the threaded post 24 can be moved in the threaded hole 23, thereby tightening or loosening the support plate 5 and limiting the rotation of the handrail body 122.

[0035] In one embodiment, a limiting plate 25 is fixedly connected to the top end of the rotating shaft 9. This prevents the turntable 10 from falling off the rotating shaft 9.

[0036] The working principle of this utility model is as follows: When using the rotatable and height-adjustable armrest of this utility model, when it is necessary to adjust the height of the armrest body 12, press the button 21 manually to drive the first connecting plate 15 to move the limiting block 17 away from the positioning hole 13 on the support cylinder 2. At the same time, the first connecting plate 15 compresses the compression spring 18. At this time, the lifting cylinder 3 can slide up and down on the outer wall of the support cylinder 2. After the lifting cylinder 3 is slid to the required height, release the button 21. The restoring force of the compression spring 18 pushes the first connecting plate 15 to reset, and the limiting block 17 re-engages into the positioning hole 13, thereby fixing the height of the lifting cylinder 3.

[0037] When it is necessary to adjust the horizontal angle of the handrail body 12, manually lift the handrail body 12 to drive the turntable 10 and its bottom positioning sheath 11 out of the positioning groove 8. Then, the handrail body 12 can be rotated in all directions around the rotating shaft 9. After adjusting the horizontal angle of the handrail body 12 to the required position, release the handrail body 12. Under the action of gravity, the turntable 10 drives the positioning sheath 11 to move down and re-lock into the positioning groove 8, thereby limiting the horizontal position of the handrail body 12.

[0038] When it is necessary to adjust the vertical angle of the handrail body 12, manually rotate the knob 22 to adjust the position of the threaded post 24 in the threaded hole 23, reduce the tightness of the threaded post 24 against the support plate 5, and then rotate the handrail 12 to change its vertical angle. When the vertical angle of the handrail body 12 is adjusted to the desired position, rotate the knob 22 in the opposite direction to increase the tightness of the threaded post 24 against the support plate 5, thereby limiting the vertical position of the handrail body 12.

[0039] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0040] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A rotatable and height-adjustable seat armrest, comprising a mounting base (1), characterized in that: One end of the mounting base (1) is fixedly connected to a vertically arranged support cylinder (2). A lifting cylinder (3) is sleeved and slidably connected to the outer wall of the support cylinder (2). An adjustment component for adjusting the height of the lifting cylinder (3) is provided inside the support cylinder (2). A support seat (4) is fixedly connected to the top of the lifting cylinder (3). A support plate (5) is rotatably connected to the support seat (4). A limit component is provided on the support seat (4). A disc (6) is fixedly connected to the top of the support plate (5). The disc (6) has a circular groove (7) on its top surface and a plurality of positioning grooves (8) evenly distributed along its circumference on its bottom surface. A vertically arranged rotating shaft (9) is fixedly connected to the middle of the bottom surface of the groove (7). A turntable (10) is sleeved and rotatably connected to the outer wall of the rotating shaft (9). A positioning sheath (11) adapted to the positioning groove (8) is fixedly connected to the bottom surface of the turntable (10). A handrail body (12) is fixedly connected to the top surface of the turntable (10).

2. The rotatable and height-adjustable seat armrest according to claim 1, characterized in that: The support cylinder (2) has several positioning holes (13) on one side wall along its height direction, and the lifting cylinder (3) has an installation hole (14) at its top. The adjustment component includes a first connecting plate (15), which passes through the installation hole (14) and is slidably connected thereto. A positioning element is fixedly connected to the bottom surface of the first connecting plate (15).

3. The rotatable and height-adjustable seat armrest according to claim 2, characterized in that: The positioning component includes a second connecting plate (16), which is vertically fixedly connected to the bottom surface of the first connecting plate (15). The bottom of the second connecting plate (16) extends into the support cylinder (2). A limiting block (17) adapted to the positioning hole (13) is fixedly connected to the bottom end of the second connecting plate (16). A baffle (20) is fixedly connected to one end of the first connecting plate (15) located inside the lifting cylinder (3). A compression spring (18) is fixedly connected to the side wall of the baffle (20) away from the mounting hole (14). The other end of the compression spring (18) is fixedly connected to the inner side wall of the lifting cylinder (3).

4. The rotatable and height-adjustable seat armrest according to claim 3, characterized in that: A slide plate (19) is fixedly connected directly below the compression spring (18). One end of the slide plate (19) is fixedly connected to the inner wall of the lifting cylinder (3). The bottom surface of the baffle (20) is slidably connected to the top surface of the slide plate (19).

5. The rotatable and height-adjustable seat armrest according to claim 4, characterized in that: A button (21) is fixedly connected to one end of the first connecting plate (15) located outside the lifting cylinder (3).

6. The rotatable and height-adjustable seat armrest according to claim 1, characterized in that: The limiting component includes a knob (22), and a threaded hole (23) is provided through the side wall of the support base (4). One end of the knob (22) is fixedly connected to a threaded post (24), which is threadedly connected to the threaded hole (23) and one end abuts against the side wall of the support plate (5).

7. The rotatable and height-adjustable seat armrest according to claim 1, characterized in that: The top end of the rotating shaft (9) is fixedly connected to a limiting plate (25).

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