Rotary armrest of seat

Abstract

The utility model relates to a rotary armrest of a seat. The rotary armrest comprises an armrest, the fixing pipe is fixedly connected with the seat framework; the rotating shaft is rotationally connected with the fixed pipe, and the upper end part of the rotating shaft is fixedly connected with the handrail; the fixed damping block is arranged on the rotating shaft in a sleeving manner; relative displacement exists between the movable damping block and the fixed damping block; the damping adjusting knob rotates to drive the movable damping block to move; and the elastic piece is arranged between the step on the outer wall of the rotating shaft and the movable damping block. According to the rotating armrest of the seat, a person rotates the armrest through elbows, the rotating shaft rotates along with the armrest, and rotation with damping can be achieved through friction force between the rotating shaft and the belleville spring; by adjusting the damping adjusting knob, the movable damping block can move left and right, so that the friction force between the rotating shaft and the belleville spring is adjusted; a doctor can spontaneously move the armrest to a proper position in the operation process, operation is easy, and wide application can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of seats, in particular to a rotating armrest of a seat. Background Art

[0002] As we all know, doctors are prone to body fatigue when performing examinations or treatments for a long time. If they cannot relieve the fatigue of their limbs, their operations will become unstable, which will directly affect the results of treatment or examination. Therefore, the doctor's chair is indispensable in the doctor's work process.

[0003] At present, the doctor's chair usually includes a seat frame and an armrest, and the armrest is connected to the seat frame. The specific implementation method is that the armrest is provided with an armrest shaft, the armrest shaft is provided with a ring groove, an O-ring is sleeved in the ring groove, and then the armrest shaft is inserted into the seat frame, and the armrest shaft and the seat frame are locked by a locking screw, so that the armrest and the seat frame are fixedly connected.

[0004] The above structure results in a fixed position between the armrest axis and the seat frame, and the armrest axis and the seat frame cannot be adjusted to a comfortable angle suitable for different doctors, resulting in a poor seat experience for doctors. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem in the prior art that the armrests of medical chairs currently on the market are not rotatable, causing inconvenience to doctors during use.

[0006] In order to solve the above technical problems, the utility model provides a rotating armrest for a seat, comprising: an armrest; a fixed tube, which is fixedly connected to a seat frame; a rotating shaft, which is rotatably connected to the fixed tube, and the upper end of the rotating shaft is fixedly connected to the armrest; a fixed damping block, which is arranged in the fixed tube, and the fixed damping block is sleeved on the rotating shaft; a movable damping block, which is sleeved on the rotating shaft, and there is a relative displacement between the movable damping block and the fixed damping block; a damping adjustment knob, which is arranged on the fixed tube, and the stud of the damping adjustment knob is threadedly connected to the movable damping block, and the damping adjustment knob is rotated to drive the movable damping block to move; an elastic member, which is arranged between the step of the outer wall of the rotating shaft and the movable damping block. The rotating armrest of the seat of the utility model adjusts the damping size by adjusting the inclination angle of the inclined surface between the movable damping block and the fixed damping block; the structure is simple, the cost is low, the operation is convenient, and the application range is wide.

[0007] In one embodiment of the present invention, the central axis of the fixing tube has a through hole 1.

[0008] In one embodiment of the present invention, a bearing is connected to the outer wall of the rotating shaft, and the bearing is arranged in the first through hole.

[0009] In one embodiment of the utility model, the lower end surface of the movable damping block is provided with an inclined surface 1, and the upper end surface of the fixed damping block is provided with an inclined surface 2, the inclined surface 1 and the inclined surface 2 are in contact, and the inclined surface 1 and the inclined surface 2 have a relative displacement.

[0010] In one embodiment of the present invention, an annular step is provided on the circumferential outer wall of the rotating shaft, and the elastic member is arranged between the lower end surface of the annular step and the upper end surface of the movable damping block.

[0011] In an embodiment of the present invention, the elastic member is a butterfly spring.

[0012] In one embodiment of the utility model, an external thread is provided on the outer wall of the lower end portion of the rotating shaft, and a locking nut is provided on the external thread, and the locking nut is used to limit and fix the damping block.

[0013] In one embodiment of the utility model, a second through hole is provided in the radial direction of the fixing tube, and the stud of the damping adjustment knob passes through the second through hole.

[0014] In one embodiment of the utility model, the movable damping block is provided with a threaded hole along the radial direction of the fixed tube, the threaded hole and the second through hole are located on the same axis, and the stud of the damping adjustment knob is threadedly connected to the threaded hole.

[0015] In an embodiment of the present invention, a fixing screw is provided on the armrest, and the fixing screw is used to lock the rotating shaft and the armrest.

[0016] The above technical solution of the utility model has the following advantages compared with the prior art:

[0017] The swivel armrest of the chair described in the utility model is mainly composed of an armrest, a swivel shaft, a bearing, an elastic member, a movable damping block, a fixed damping block, a damping adjustment knob, a locking nut and a fixed tube. When a person rotates the armrest with his elbow, the swivel shaft rotates along with it, and the friction between the swivel shaft and the disc spring can realize damped rotation; by adjusting the damping adjustment knob, the movable damping block can be moved left and right, thereby adjusting the friction between the swivel shaft and the disc spring, and the damping can be adjusted, and the armrest can realize 360° damped rotation; the problem that the doctor can spontaneously move the armrest during surgery and move it to a suitable position is solved, the operation is simple, and it can be widely used. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0019] Figure 1It is a structural schematic diagram of a rotating armrest of a seat of the utility model;

[0020] Figure 2 It is a bottom view of the rotating armrest of the seat of the utility model;

[0021] Figure 3 This utility model Figure 2 Cross-section along the middle BB direction;

[0022] Figure 4 This utility model Figure 3 A partial enlarged view of point A in the middle.

[0023] Explanation of the reference numerals in the specification: handrail 1, fixing screw 11, fixing tube 2, through hole one 21, through hole two 22, rotating shaft 3, bearing 31, annular step 32, external thread 33, anti-loosening nut 34, fixed damping block 4, inclined surface two 41, movable damping block 5, inclined surface one 51, threaded hole 52, damping adjustment knob 6, elastic member 7. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] Reference Figure 1-4 As shown, the rotating armrest of the seat of the utility model comprises: an armrest 1; a fixed tube 2, which is fixedly connected to the seat frame; a rotating shaft 3, which is rotatably connected to the fixed tube 2, and the upper end of the rotating shaft 3 is fixedly connected to the armrest 1; a fixed damping block 4, which is arranged in the fixed tube 2, and the fixed damping block 4 is sleeved on the rotating shaft 3; a movable damping block 5, which is sleeved on the rotating shaft 3, and there is a relative displacement between the movable damping block 5 and the fixed damping block 4; a damping adjusting knob 6, which is arranged on the fixed tube 2, and the stud of the damping adjusting knob 6 is threadedly connected to the movable damping block 5, and the damping adjusting knob 6 is rotated to drive the movable damping block 5 to move; an elastic member 7, which is arranged between the step of the outer wall of the rotating shaft 3 and the movable damping block 5.

[0026] In specific application, a person's elbow is placed on the armrest 1, and the elastic member 7 is compressed by pressing down. The person's elbow rotates the armrest 1, thereby driving the rotating shaft 3 to rotate. Since there is a certain elastic force between the rotating shaft 3 and the elastic member 7, damped rotation is achieved. The armrest 1 can be rotated to any angle with the fixed tube 2. Therefore, it can meet the armrest angle support required by different doctors when working or resting. The relative position between the movable damping block 5 and the fixed damping block 4 is adjusted by the damping adjustment knob 6, so as to maintain different friction forces between the rotating shaft 3 and the elastic member 7, so that the armrest 1 can remain stationary when there is no external force pressing down or the downward pressure is insufficient.

[0027] The adjustment structure between the movable damping block 5 and the fixed damping block 4 is that the lower end surface of the movable damping block 5 is provided with an inclined surface 1 51, and the upper end surface of the fixed damping block 4 is provided with an inclined surface 2 41, the inclined surface 1 51 and the inclined surface 2 41 are in contact, and the inclined surface 1 51 and the inclined surface 2 41 have a relative displacement. The damping adjustment knob 6 is rotated to adjust the movable damping block 5 to move perpendicular to the axis of the rotating shaft 3, that is, to adjust the movable damping block 5 along the axis of the rotating shaft 3. Figure 3 The movable damping block 5 moves in the left and right directions, so that the position of the inclined surface 1 51 changes. Therefore, the position of the fixed damping block 4 is adjusted so that the inclined surface 2 41 and the inclined surface 1 51 remain in contact with each other. The fixed damping block 4 needs to be moved along the axial direction of the rotating shaft 3, and then the position of the movable damping block 5 is adjusted, thereby adjusting the friction between the rotating shaft 3 and the elastic member 7.

[0028] In the above structure, the central axis of the fixed tube 2 has a through hole 1 21. A bearing 31 is connected to the outer wall of the rotating shaft 3, and the bearing 31 is arranged in the through hole 1 21. The rotating shaft 3 can smoothly rotate in the fixed tube 2 through the bearing 31, and the fixed tube 2, the rotating shaft 3 and the bearing 31 are coaxially arranged.

[0029] In addition, the connection relationship between the rotating shaft 3 and the elastic member 7 is that an annular step 32 is provided on the circumferential outer wall of the rotating shaft 3, and the elastic member 7 is arranged between the lower end surface of the annular step 32 and the upper end surface of the movable damping block 5. Preferably, the elastic member 7 is a butterfly spring. The elastic member 7 is squeezed between the lower end surface of the annular step 32 and the upper end surface of the movable damping block 5. By adjusting the position of the movable damping block 5, the compression state of the elastic member 7 can be adjusted, thereby achieving the effect of having different friction forces between the elastic member 7 and the annular step 32.

[0030] In the above structure, an outer wall of the lower end of the rotating shaft 3 is provided with an external thread 33, and a locking nut 34 is provided on the external thread 33. The locking nut 34 is used to limit the position of the fixed damping block 4. The locking nut 34 is used to limit the position of the fixed damping block 4.

[0031] In the above structure, the fixed tube 2 is provided with a second through hole 22 in the radial direction, and the stud of the damping adjustment knob 6 passes through the second through hole 22. The movable damping block 5 is provided with a threaded hole 52 in the radial direction of the fixed tube 2, and the threaded hole 52 and the second through hole 22 are on the same axis, and the stud of the damping adjustment knob 6 is threadedly connected with the threaded hole 52. The damping adjustment knob 6 and the movable damping block 5 are threadedly connected, so when the damping adjustment knob 6 is turned, the damping adjustment knob 6 keeps the axial direction unchanged, and the movable damping block 5 will be displaced along the axial direction of the stud of the damping adjustment knob 6.

[0032] The connection relationship between the armrest 1 and the rotating shaft 3 is that the armrest 1 is provided with a fixing screw 11, and the fixing screw 11 is used to lock the rotating shaft 3 and the armrest 1. The armrest 1 and the rotating shaft 3 are fixed by the fixing screw 11, so when the armrest 1 is rotated, the rotating shaft 3 will also rotate accordingly.

[0033] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A rotating armrest for a seat, characterized in that: include: armrest; A fixed tube, which is fixedly connected to the seat frame; A rotating shaft, which is rotatably connected to the fixed pipe, and an upper end of the rotating shaft is fixedly connected to the handrail; A fixed damping block is arranged in the fixed tube, and the fixed damping block is sleeved on the rotating shaft; A movable damping block is sleeved on the rotating shaft, and there is a relative displacement between the movable damping block and the fixed damping block; A damping adjustment knob is arranged on the fixed tube, and a stud of the damping adjustment knob is threadedly connected with the movable damping block, and the damping adjustment knob is rotated to drive the movable damping block to move; The elastic member is arranged between the step of the outer wall of the rotating shaft and the movable damping block.

2. The swivel armrest of a chair according to claim 1, characterized in that: The central axis of the fixing pipe has a through hole 1.

3. The swivel armrest of a chair according to claim 2, characterized in that: A bearing is connected to the outer wall of the rotating shaft, and the bearing is arranged in the first through hole.

4. The swivel armrest of a chair according to claim 1, characterized in that: The lower end surface of the movable damping block is provided with an inclined surface 1, and the upper end surface of the fixed damping block is provided with an inclined surface 2. The inclined surface 1 and the inclined surface 2 are in contact, and the inclined surface 1 and the inclined surface 2 have a relative displacement.

5. The swivel armrest of a chair according to claim 1, characterized in that: An annular step is provided on the circumferential outer wall of the rotating shaft, and the elastic member is arranged between the lower end surface of the annular step and the upper end surface of the movable damping block.

6. The swivel armrest of a chair according to claim 1, characterized in that: The elastic member is a butterfly spring.

7. The swivel armrest of a chair according to claim 1, characterized in that: An external thread is arranged on the outer wall of the lower end portion of the rotating shaft, and a locking nut is arranged on the external thread. The locking nut is used to limit and fix the damping block.

8. The swivel armrest of a chair according to claim 1, characterized in that: The fixing tube is provided with a second through hole in the radial direction, and the stud of the damping adjustment knob passes through the second through hole.

9. The swivel armrest of a chair according to claim 8, characterized in that: The movable damping block is provided with a threaded hole along the radial direction of the fixed tube, the threaded hole and the second through hole are located on the same axis, and the stud of the damping adjustment knob is threadedly connected with the threaded hole.

10. The swivel armrest of a chair according to claim 1, characterized in that: The armrest is provided with a fixing screw, and the fixing screw is used to lock the rotating shaft and the armrest.

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