Armrest assembly structure and seat

Abstract

The utility model discloses a handrail assembly structure which comprises a handrail, a base frame, a rotating shaft and a one-way bearing. The base frame is provided with a shaft sleeve. The handrail is rotatably connected to the shaft sleeve through a rotating shaft. The rotating shaft is provided with a one-way bearing; the torque when the handrail rotates upwards is smaller than that when the handrail rotates downwards; when the handrail rotates downwards, certain external force needs to be applied, and when the handrail rotates upwards, the handrail is free, so that more labor is saved, and better operation experience is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of armrests, and particularly relates to an armrest assembly structure and a seat. Background Art

[0002] In order to facilitate use, the armrests of seats are mostly set as rotating structures and are provided with damping rubber rings, so that the armrests have a certain torque whether they rotate upward or downward, and the torque values are basically the same. When a user rotates the armrest upward or downward, a certain external force needs to be applied. When the armrest rotates downward, it has a torque, which can prevent the armrest from quickly rotating from the vertical state to the horizontal state under the action of its own gravity. However, when the armrest rotates upward, the setting of the damping rubber ring will make the rotation of the armrest more laborious and the operation experience is poor. Content of the Utility Model

[0003] The purpose of the utility model is to provide an armrest assembly structure and a seat. Through the setting of a one-way bearing, the torques of the armrest in different rotation directions are not the same. When the armrest rotates downward, a certain external force needs to be applied. When the armrest rotates upward, it is freer and more labor-saving, thus forming a better operation experience.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] An armrest assembly structure includes an armrest, a base frame, a rotating shaft and a one-way bearing;

[0006] The base frame is provided with a bushing, and the armrest is rotatably connected to the bushing through the rotating shaft;

[0007] The rotating shaft is provided with a one-way bearing;

[0008] The torque when the armrest rotates upward is less than the torque when the armrest rotates downward.

[0009] In some embodiments, it further includes a rubber sleeve; the rotating shaft includes a first shaft section and a second shaft section;

[0010] The first shaft section is provided with a one-way bearing, and the second shaft section is inserted into the bushing;

[0011] The rubber sleeve is sleeved on the one-way bearing, and the side surface of the rubber sleeve abuts against the bushing.

[0012] In some embodiments, it further includes a hose clamp and an adjusting screw; the hose clamp is sleeved on the rubber sleeve, and the adjusting screw can adjust the diameter of the hose clamp.

[0013] In some embodiments, it further includes a washer and a circlip; the washer and the circlip are sequentially arranged at one end of the first shaft section far from the second shaft section.

[0014] In some embodiments, the rotating shaft further includes a third shaft segment, the third shaft segment is provided with a circumferentially extending limiting groove, and a limiting bump matching with the limiting groove is provided on the side of the shaft sleeve.

[0015] In some embodiments, the third shaft segment is provided with a flange, and the flange is connected to the armrest.

[0016] The beneficial effects of the present utility model: Through the setting of the one-way bearing, the torques of the armrest in different rotation directions are different. When the armrest rotates downward, a certain external force needs to be applied. When the armrest rotates upward, it is freer and more labor-saving, thus forming a better operation experience;

[0017] Moreover, the friction between the rubber sleeve and the shaft sleeve can be adjusted by the hose clamp, thereby adjusting the tightness of the rotation of the armrest. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a structural diagram of an armrest assembly structure of the present utility model, with the armrest in a horizontal state;

[0019] Figure 2 is a structural diagram of an armrest assembly structure of the present utility model, with the armrest in a vertical state;

[0020] Figure 3 is a structural diagram of an armrest assembly structure of the present utility model;

[0021] Figure 4 is an exploded view of an armrest assembly structure of the present utility model;

[0022] Figure 5 is an exploded view of the rotating structures such as the rotating shaft, shaft sleeve and one-way bearing of the present utility model;

[0023] Figure 6 is a sectional view of the rotating structures such as the rotating shaft, shaft sleeve and one-way bearing of the present utility model;

[0024] Figure 7 is an exploded view of the rotating shaft and shaft sleeve of the present utility model;

[0025] Wherein: 1 - armrest; 2 - base frame; 3 - rotating shaft; 31 - first shaft segment; 32 - second shaft segment; 33 - third shaft segment; 330 - limiting groove; 34 - flange; 4 - shaft sleeve; 41 - limiting bump; 5 - one-way bearing; 6 - rubber sleeve; 7 - hose clamp; 71 - adjusting screw; 8 - washer; 9 - snap ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] Reference Figures 1 to 7, an armrest 1 assembly structure, including an armrest 1, a base frame 2, a rotating shaft 3 and a one-way bearing 5;

[0028] The base frame 2 is provided with a bushing 4, and the armrest 1 is rotatably connected to the bushing 4 through the rotating shaft 3;

[0029] The rotating shaft 3 is provided with a one-way bearing 5; the one-way bearing 5 can transmit force and torque in one direction and rotate relatively freely in the other direction;

[0030] When the armrest 1 rotates upward (rotates in the A direction), the torque is relatively small, and it can rotate upward relatively freely and easily. When the armrest 1 rotates downward (rotates in the B direction), the torque is relatively large, and a certain external force needs to be applied to push the armrest 1 downward.

[0031] The torque when the armrest 1 rotates upward is less than the torque when the armrest 1 rotates downward.

[0032] Thus, through the setting of the one-way bearing 5, the torques of the armrest 1 in different rotation directions are different. Compared with the equivalent torque, the armrest 1 of the present application is more labor-saving when rotating upward, thereby forming a better operation experience.

[0033] Reference Figure 5 And Figure 6 , further including a rubber sleeve 6;

[0034] The rotating shaft 3 includes a first shaft section 31 and a second shaft section 32; the diameter of the first shaft section 31 can be smaller than that of the second shaft section 32;

[0035] The first shaft section 31 is provided with a one-way bearing 5, and the second shaft section 32 is inserted into the bushing 4;

[0036] The rubber sleeve 6 is sleeved on the one-way bearing 5, and the side surface of the rubber sleeve 6 abuts against the bushing 4;

[0037] The inner ring of the one-way bearing 5 is connected to the first shaft section 31, and the outer ring of the one-way bearing 5 is connected to the rubber sleeve 6;

[0038] When the rotating shaft 3 rotates upward, the one-way bearing 5 rotates relatively freely, basically does not transmit torque, the moving rubber sleeve 6 does not rotate, and no sliding friction is formed between the rubber sleeve 6 and the bushing 4, and the armrest 1 rotates upward relatively freely;

[0039] When the rotating shaft 3 rotates downward, the one-way bearing 5 transmits torque, drives the rubber sleeve 6 to rotate, and a sliding friction is formed between the rubber sleeve 6 and the bushing 4, so as to promote a preset torque when the armrest 1 rotates downward.

[0040] Further including a hose clamp 7 and an adjusting screw 71; the hose clamp 7 is sleeved on the rubber sleeve 6, and the adjusting screw 71 can adjust the diameter of the hose clamp 7.

[0041] When the adjusting screw 71 is rotated, the diameter of the hose clamp 7 becomes smaller, and the rubber sleeve 6 is deformed under pressure, so that the frictional force between the rubber sleeve 6 and the bushing 4 becomes larger, and the torque for the armrest 1 to rotate downward becomes larger. Similarly, when the diameter of the hose clamp 7 becomes larger, the frictional force between the rubber sleeve 6 and the bushing 4 becomes smaller, and the torque for the armrest 1 to rotate downward becomes smaller. Therefore, the torque for the armrest 1 to rotate downward can be adjusted by the hose clamp 7, that is, the tightness of the downward rotation of the armrest 1 is adjusted.

[0042] It further includes a washer 8 and a circlip 9;

[0043] The washer 8 and the circlip 9 are sequentially arranged at one end of the first shaft section 31 away from the second shaft section 32, so as to limit the positions of the one-way bearing 5 and the rubber sleeve 6.

[0044] Reference Figure 7 , the rotating shaft 3 further includes a third shaft section 33. The diameter of the third shaft section 33 can be larger than that of the third shaft section 33. The third shaft section 33 is provided with a circumferentially extending limiting groove 330, and a limiting projection 41 matching with the limiting groove 330 is provided on the side of the bushing 4.

[0045] The arrangement of the limiting groove 330 and the limiting projection 41 can limit the rotation angle of the armrest 1. By appropriately setting the circumferential extension angle of the limiting groove 330, the rotation of the armrest 1 within a range of 90 degrees can be limited, that is, it can rotate between the horizontal state and the vertical state.

[0046] The third shaft section 33 is provided with a flange 34, and the flange 34 is connected to the armrest 1. The linkage between the armrest 1 and the rotating shaft 3 is realized.

[0047] A seat includes the above-mentioned armrest 1 assembly structure. The seat can be a massage chair, a foot bath chair, a beauty chair, etc.

[0048] The above disclosure is only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the utility model.

Claims

1. A handrail assembly structure, characterized in that: It comprises a handrail (1), a base frame (2), a rotating shaft (3) and a one-way bearing (5); The base frame (2) is provided with a shaft sleeve (4), and the handrail (1) is rotatably connected to the shaft sleeve (4) via a rotating shaft (3); The rotating shaft (3) is provided with a one-way bearing (5); The torque when the armrest (1) rotates upward is smaller than the torque when the armrest (1) rotates downward.

2. The handrail assembly structure according to claim 1, characterized in that: Also includes a rubber sleeve (6); The rotating shaft (3) comprises a first shaft section (31) and a second shaft section (32); The first shaft section (31) is provided with a one-way bearing (5), and the second shaft section (32) is inserted into the shaft sleeve (4); The rubber sleeve (6) is sleeved on the one-way bearing (5), and the side surface of the rubber sleeve (6) is in contact with the shaft sleeve (4).

3. The handrail assembly structure according to claim 2, characterized in that: It also includes a throat clamp (7) and an adjusting screw (71); The throat clamp (7) is sleeved on the rubber sleeve (6), and the adjusting screw (71) can adjust the diameter of the throat clamp (7).

4. The handrail assembly structure according to claim 3, characterized in that: It also includes a washer (8) and a retaining ring (9); The washer (8) and the retaining spring (9) are arranged in sequence at an end of the first shaft section (31) away from the second shaft section (32).

5. The handrail assembly structure according to any one of claims 2 to 4, characterized in that: The rotating shaft (3) further comprises a third shaft section (33), the third shaft section (33) being provided with a circumferentially extending limiting groove (330), and the side portion of the shaft sleeve (4) being provided with a limiting protrusion (41) matching with the limiting groove (330).

6. The handrail assembly structure according to claim 5, characterized in that: The third shaft section (33) is provided with a flange (34), and the flange (34) is connected to the handrail (1).

7. A chair, comprising the armrest (1) assembly structure according to any one of claims 1 to 4.

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