Angle-adjustable armrest

Abstract

The utility model relates to the field of seat accessories, in particular to an angle-adjustable armrest which comprises a rotating base fixedly connected to a seat and an armrest assembly rotationally arranged on the rotating base. A rotating shaft is arranged in the center of the outer end face of the rotating base, an arc-shaped groove concentric with the rotating shaft is formed in the outer end face beside the rotating shaft, and a positioning groove is formed in the end of at least one side of the groove bottom face of the arc-shaped groove. The lower end part of the armrest assembly is rotationally arranged on the rotating shaft, and a guide frame and a control part for driving the guide frame to move relative to the axial direction of the rotating shaft are arranged at the lower end part of the armrest assembly; the guide frame comprises arc-shaped supporting feet, the inner ends of the arc-shaped supporting feet are embedded into the arc-shaped grooves, and positioning columns used for being clamped into the positioning grooves are further constructed at the inner ends of the arc-shaped supporting feet. The scheme has the advantages that the angle of the armrest can be flexibly adjusted, and the use comfort and adaptability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of seat accessories, especially to an angle-adjustable armrest. BACKGROUND

[0002] An e-sports chair is a type of chair designed specifically for e-sports competitions. It is ergonomically designed to provide a comfortable sitting position and support, helping players maintain comfort and focus during long gaming sessions. E-sports chairs usually have adjustable seat height, inclination, backrest angle, etc., allowing personalized settings according to the player's needs. The two sides of the chair are usually equipped with e-sports chair armrests, providing hand support for players.

[0003] However, existing e-sports chair armrests have some problems during use. Most armrests are designed in one piece and cannot be adjusted flexibly according to user needs. This fixed design limits the functionality and adaptability of the armrest, making it difficult to meet the needs of different users in different usage scenarios. For example, some users may want to adjust the angle of the armrest during gameplay for more comfortable arm support, while others may need to adjust the armrest's position in different sitting positions. In addition, fixed armrests can also cause users to feel uncomfortable or tired after long periods of use. Since the angle and position of the armrest cannot be adjusted according to individual body size and preferences, users may experience arm, shoulder, or neck discomfort. This not only affects the user's gaming experience, but also can have a negative impact on their health. Another problem is that fixed armrests can limit the versatility of the chair. For example, when users need to move the chair closer to the table or in a small space, fixed armrests can become an obstacle. This design lacks flexibility and cannot adapt to user needs in different environments.

[0004] To address the above problems, the existing technology needs to be improved. SUMMARY

[0005] To solve the above problems, the utility model aims to provide an angle-adjustable armrest with the advantages of flexible armrest angle adjustment, improved comfort and adaptability.

[0006] To achieve the above-mentioned purposes, the utility model adopts the following technical solutions:

[0007] The utility model provides an angle adjustable handrail, technical solutions are as follows: including the rotating base for fixed connection on the seat and the handrail assembly of rotation setting on the rotating base, the outer end surface center of rotating base is provided with the pivot, and the outer end surface of rotating base is provided with the arc slot concentric with the pivot on the side of pivot, and the at least one side end of arc slot groove bottom surface constructs the locating groove, the lower end of handrail assembly is rotationally arranged on the pivot, and the lower end of handrail assembly is provided with the guide frame and the control component for driving the axial movement of guide frame relative to pivot, the guide frame includes arc foot, and the inner end of arc foot is embedded in arc slot, and the inner end of arc foot also constructs the locating column for clamping into locating groove, when control component drives the axial movement of guide frame and makes locating column exit locating groove, handrail assembly can be limited rotation relative to rotating base, when arc foot moves to arc slot end and locating column is aligned with locating groove, control component drives the axial of guide frame and makes locating column enter locating groove

[0008] Make handrail assembly fixed relative to rotating base.

[0009] Further, the utility model still proposes that the outer end surface of rotating base is provided with at least two arc slots relative to the circumference symmetry of pivot, and the corresponding number of arc feet is provided with the circumference symmetry on guide frame, and the inner end of multiple arc feet on guide frame respectively extends into multiple arc slots of rotating base.

[0010] Further, the utility model still proposes that the guide ring of connecting multiple arc feet is further included in guide frame, and the pivot is arranged at the center of guide ring and extends from guide ring.

[0011] Further, the utility model still proposes that the control component rotationally arranged on the lower end of handrail assembly, and control component is connected with guide frame, and control component can drive guide frame axial movement when rotating.

[0012] Further, the utility model still proposes that the control component is built as the knob, and the knob is sleeved on guide ring, and the pivot is arranged at the center of knob and extends from knob.

[0013] Further, the utility model still proposes that the knob is further built with the knob of the hand holding and the knob.

[0014] Further, the utility model still proposes that the outer wall of guide ring is built with the guide column that protrudes outward, and the sidewall of knob is built with the guide slot, the guide slot is built in the " Z " shape groove, and the both ends of " Z " shape groove are in the axial different positions of pivot, the guide column is embedded in guide slot, when knob rotates relative to guide ring, the guide column slides in guide slot and generates displacement relative to pivot.

[0015] Further, the application also proposes that the side wall of the toggle ring is provided with an opening for the arc-shaped leg to move, so as to avoid the arc-shaped leg when the toggle ring rotates relative to the guide ring.

[0016] As can be seen from the above, the application provides an angle-adjustable handrail, which comprises a rotating base for being fixed on a seat, and a handrail assembly rotatably arranged on the rotating base; a rotating shaft is arranged at the center of the outer end surface of the rotating base, an arc-shaped groove concentric with the rotating shaft is arranged on the outer end surface of the rotating base beside the rotating shaft, and a positioning groove is arranged on at least one side end of the groove bottom surface of the arc-shaped groove; the lower end of the handrail assembly is rotatably arranged on the rotating shaft, the lower end of the handrail assembly is provided with a guide frame, and a control component for driving the guide frame to move relative to the axial direction of the rotating shaft is arranged; the guide frame comprises an arc-shaped leg, the inner end of the arc-shaped leg is embedded into the arc-shaped groove, and the inner end of the arc-shaped leg is further provided with a positioning column for being clamped into the positioning groove. The control component drives the guide frame to move axially, so that the limited rotation or fixation of the handrail assembly relative to the rotating base is realized, thereby realizing flexible adjustment of the angle of the handrail, and the advantages of flexible adjustment of the angle of the handrail, improved comfort and adaptability are achieved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A righting state diagram of the angle-adjustable handrail provided by the application.

[0018] Figure 2 A dumping state diagram of the angle-adjustable handrail provided by the application.

[0019] Figure 3 An assembly explosion diagram of the angle-adjustable handrail provided by the application.

[0020] Figure 4 An assembly diagram of the control component and the guide frame.

[0021] Figure 5 An outer end surface diagram of the rotating base. DETAILED DESCRIPTION

[0022] The embodiments of the application are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0023] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0024] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise stated, the meaning of "a plurality of" is two or more, unless otherwise explicitly limited.

[0025] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include the direct contact of the first and second features, or the indirect contact of the first and second features through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include the vertical and inclined upward of the first feature above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the vertical and inclined downward of the first feature below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0027] As Figures 1-5The embodiment shown relates to an angle-adjustable armrest, which comprises a rotating base 1 for being fixed on a seat, and an armrest assembly 2 rotatably arranged on the rotating base 1. A rotating shaft 3 is arranged at the center of the outer end surface of the rotating base 1, and an arc-shaped groove 11 concentric with the rotating shaft 3 is arranged on the outer end surface of the rotating base 1 beside the rotating shaft 3. At least one side end of the groove bottom surface of the arc-shaped groove 11 is provided with a positioning groove 12. The lower end of the armrest assembly 2 is rotatably arranged on the rotating shaft 3, and the lower end of the armrest assembly 2 is provided with a guide frame 4 and a control component 5 for driving the guide frame 4 to move in the axial direction relative to the rotating shaft 3. The guide frame 4 comprises an arc-shaped leg 41, the inner end of the arc-shaped leg 41 is embedded in the arc-shaped groove 11, and the inner end of the arc-shaped leg 41 is further provided with a positioning column 42 for being clamped into the positioning groove 12. When the control component 5 drives the guide frame 4 to move axially so that the positioning column 42 exits the positioning groove 12, the armrest assembly 2 can be limited to rotate relative to the rotating base 1; when the arc-shaped leg 41 moves to the end of the arc-shaped groove 11 and the positioning column 42 is aligned with the positioning groove 12, the control component 5 drives the guide frame 4 to axially extend the positioning column 42 into the positioning groove 12, so that the armrest assembly 2 is fixed relative to the rotating base 1.

[0028] In this scheme, the rotating base 1 provides a rotating basis for the armrest assembly 2 through the design of the rotating shaft 3. The inner end of the arc-shaped leg 41 of the guide frame 4 is embedded in the arc-shaped groove 11, thereby limiting the range and angle of rotation. At the same time, through the cooperation of the positioning groove 12 and the positioning column 42, the fixation of the armrest assembly 2 is realized. The arrangement of the guide frame 4 and the control component 5 enables the armrest assembly 2 to be adjusted in angle when needed, and to be fixed after adjustment through the clamping of the positioning column 42 and the positioning groove 12. This design not only simplifies the adjustment process of the armrest angle, but also improves the stability of the armrest in the fixed state. Therefore, the technical scheme of the present application realizes flexible adjustment and stable fixation of the armrest angle through the cooperation of the rotating base 1, the guide frame 4, the control component 5, and the positioning groove 12 and the positioning column 42. Compared with the prior art, this scheme not only simplifies the adjustment process, but also improves the stability of the armrest in the fixed state, thereby effectively solving the technical problems of inconvenient adjustment and unstable fixation of the armrest angle.

[0029] Further, the application also proposes that the outer end surface of the rotating base 1 is circumferentially symmetrically provided with at least two arc-shaped grooves 11 relative to the rotation shaft 3; the guide frame 4 is circumferentially symmetrically provided with a corresponding number of arc-shaped feet 41; the inner end portions of the plurality of arc-shaped feet 41 on the guide frame 4 respectively extend into the plurality of arc-shaped grooves 11 of the rotating base 1. Specifically, the design of the arc-shaped grooves 11 enables the rotating base 1 to provide more support points during rotation, thereby enhancing the stability of the handrail assembly 2. The inner end portions of the arc-shaped feet 41 extend into the arc-shaped grooves 11, further ensuring the balance of the handrail assembly 2 during rotation. As a preferred embodiment, the number of arc-shaped grooves 11 and arc-shaped feet 41 can be adjusted according to actual needs, for example, set to three or four, to further improve stability. In addition, the depth and width of the arc-shaped grooves 11 can also be optimally designed according to the weight and frequency of use of the handrail assembly 2 to ensure its reliability under different use conditions. Thus, by increasing the number of arc-shaped grooves 11 on the rotating base 1 and the number of arc-shaped feet 41 on the guide frame 4, the stability of the handrail assembly 2 during rotation is significantly improved. Compared with the prior art, this design not only reduces the shaking and deviation of the handrail assembly 2 during rotation, but also enhances the balance and durability of its overall structure. Through this symmetrical arrangement, the handrail assembly 2 can rotate more smoothly, thereby effectively solving the technical problem of insufficient stability of the handrail assembly 2 during rotation.

[0030] As Figure 3As shown, the guide frame 4 further comprises a guide ring 43 connecting the plurality of arc-shaped legs 41; the rotating shaft 3 is arranged at the center of the guide ring 43 and the ends thereof extend out of the guide ring 43. The design of the guide ring 43 enables the plurality of arc-shaped legs 41 to move synchronously through the guide ring 43, thereby simplifying the structure of the guide frame 4. The rotating shaft 3 is arranged at the center of the guide ring 43, ensuring that the guide ring 43 and the arc-shaped legs 41 can stably rotate around the rotating shaft 3, while the ends of the rotating shaft 3 extend out of the guide ring 43, facilitating the connection and fixation with other components. Specifically, the guide ring 43 can be made of metal or high-strength plastic material to ensure its strength and durability. As a preferred embodiment, the inner diameter of the guide ring 43 matches the outer diameter of the rotating shaft 3, to ensure that the rotating shaft 3 can be smoothly arranged and rotated. In addition, the outer diameter of the guide ring 43 can be adjusted according to the number and distribution of the arc-shaped legs 41, to ensure that each arc-shaped leg 41 can be firmly connected with the guide ring 43. Through the design of the guide ring 43, the plurality of arc-shaped legs 41 can be synchronously embedded or withdrawn from the arc-shaped groove 11, realizing the limiting rotation and fixation of the handrail assembly 2. Thus, the technical problem of complex structure of the guide frame 4 and difficulty in realizing synchronous movement of the plurality of arc-shaped legs 41 is solved. Compared with the prior art, the technical scheme of the present application introduces the guide ring 43, which not only simplifies the structure of the guide frame 4, but also improves the precision and stability of the synchronous movement of the plurality of arc-shaped legs 41, thereby improving the overall performance and user experience of the handrail assembly 2.

[0031] Further, the present application also proposes that the control component 5 is rotationally arranged on the lower end of the handrail assembly 2, the control component 5 is threadedly connected with the guide frame 4, and the control component 5 can drive the guide frame 4 to move axially when rotating. The thread connection is a connection structure similar to the thread on the screw pair, which enables the control component 5 to move the guide frame 4 axially when rotating. Specifically, the control component 5 can convert the rotary motion into linear motion of the guide frame 4, thereby realizing the angle adjustment of the handrail assembly 2. Thus, the technical scheme simplifies the connection structure between the control component 5 and the guide frame 4 through the thread connection, improving the convenience and accuracy of operation. By rotating the control component 5, the user can easily drive the guide frame 4 to move, thereby realizing the angle adjustment of the handrail assembly 2. This design not only solves the problem of complex operation in the traditional handrail adjustment process, but also improves the stability and reliability of the adjustment. Compared with the prior art, the scheme realizes efficient driving between the control component 5 and the guide frame 4 through the thread connection, avoiding the loosening or jamming phenomenon that may occur in the traditional connection mode, further improving the user experience.

[0032] As a preferred embodiment, the control component 5 is designed as a dial ring, which is sleeved on the guide ring 43, the rotating shaft 3 is arranged at the center of the dial ring and the end thereof protrudes out of the dial ring. The design of the dial ring enables the user to drive the guide frame 4 to move axially by rotating the dial ring, thereby achieving the adjustment of the handrail assembly 2. The structure of the dial ring simplifies the operation process and improves the convenience and efficiency of the operation. The sleeving mode of the dial ring can be that the inner wall closely matches the outer wall of the guide ring 43, which ensures that the dial ring can stably drive the guide frame 4 to move when rotating. The rotating shaft 3 is arranged at the center of the dial ring, which not only ensures the stability of the rotation of the dial ring, but also makes the operation more smooth. The end of the dial ring protrudes out of the dial ring, which is convenient for the user to operate. As a preferred embodiment, the outer surface of the dial ring can be provided with anti-slip lines to increase the friction when the user holds it, thereby further improving the convenience of operation. In addition, the material of the dial ring can be selected from lightweight and wear-resistant materials such as aluminum alloy or engineering plastic to ensure its durability and lightness during operation. Specifically, the rotational movement of the dial ring is transmitted to the guide frame 4 through the rotating shaft 3, so that the guide frame 4 can move axially. When the user rotates the dial ring, the guide frame 4 moves accordingly, thereby driving the handrail assembly 2 to adjust. This design not only simplifies the operation steps, but also improves the accuracy of adjustment. Compared with the prior art, the present application significantly improves the convenience and efficiency of the adjustment of the handrail assembly 2 through the design of the dial ring, and solves the problem of inconvenient operation of the control component 5 in the prior art.

[0033] Further, the present application also proposes that the dial ring is further provided with a dial block 51 for the user to hold and dial. The dial block 51 can be designed as a protruding structure, which can be circular, square or other shapes suitable for hand dialing. The surface of the dial block 51 can be provided with anti-slip lines or made of anti-slip material to increase the friction when holding and prevent the hand from slipping. The position of the dial block 51 can be arranged on the outer side of the dial ring, which is convenient for the user to operate. In addition, the number of dial blocks 51 can be adjusted according to actual needs, for example, multiple dial blocks 51 can be arranged at symmetrical positions of the dial ring to provide more holding options. The construction of the dial block 51 enables the user to operate more easily and accurately when rotating the dial ring. By increasing the dial block 51, the problem of lacking a force point when rotating the dial ring is solved, thereby improving the user's operation experience and efficiency. The design of the dial block 51 not only provides the convenience of hand holding, but also enhances the stability and controllability of the dial ring, making it more convenient and comfortable for the user to adjust the angle of the handrail. Compared with the prior art, this technical solution significantly improves the user's operation experience through simple structural improvement, and has high practicality and creativity.

[0034] In a specific embodiment, the outer wall of the guide ring 43 is provided with an outwardly protruding guide post 44, and the side wall of the actuating ring is provided with a guide groove 52; the guide groove 52 is designed in a "Z" shape, with both ends located at different axial positions of the rotating shaft 3; the guide post 44 is embedded in the guide groove 52, and when the actuating ring rotates relative to the guide ring 43, the guide post 44 slides in the guide groove 52 and produces axial displacement relative to the rotating shaft 3. Specifically, the protruding design of the guide post 44 can ensure its stable sliding in the guide groove 52, avoiding inaccurate movement due to friction or looseness. The "Z" shape design of the guide groove 52 allows the actuating ring to drive the guide ring 43 to move axially when rotating, thereby achieving the fixation and release of the handrail assembly 2. As a preferred embodiment, the guide post 44 can be made of wear-resistant material to prolong its service life. In addition, the depth and width of the guide groove 52 can be adjusted according to actual needs to ensure smooth sliding of the guide post 44 in the groove without jamming. Thus, this technical solution solves the technical problem of relative rotation and axial displacement between the actuating ring and the guide ring 43 through the cooperation of the guide post 44 and the guide groove 52. Compared with the prior art, this design is simple and effective, and can ensure the stability and accuracy of the handrail assembly 2 during angle adjustment. Through this design, the handrail assembly 2 can drive the guide ring 43 to move axially when rotating, thereby achieving the fixation and release of the handrail assembly 2, improving the user experience.

[0035] Further, the side wall of the actuating ring is provided with an opening 53 for the movement of the arc-shaped leg 41, to avoid interference with the arc-shaped leg 41 when the actuating ring rotates relative to the guide ring 43. The shape and size of the opening 53 can be adjusted according to the specific design of the arc-shaped leg 41 to ensure that the actuating ring does not interfere with the arc-shaped leg 41 during rotation. Specifically, the opening 53 can be designed as an arc or rectangle matching the profile of the arc-shaped leg 41, and the width of the opening 53 should be slightly larger than the width of the arc-shaped leg 41 to ensure sufficient space for movement. As a preferred embodiment, the edges of the opening 53 can be designed for smooth transition to reduce friction and wear during rotation of the actuating ring. This technical solution effectively solves the interference problem between the actuating ring and the arc-shaped leg 41 during rotation through the opening 53 design on the side wall of the actuating ring. Thus, the actuating ring can move smoothly during rotation without being interfered by the arc-shaped leg 41 of the guide bracket 4, thereby driving the guide bracket 4 to move axially and achieving angle adjustment of the handrail assembly 2. Compared with the prior art, this design significantly improves the flexibility and stability of the handrail assembly 2 adjustment, ensuring that users can easily adjust the handrail angle according to their needs during use, improving the user experience.

[0036] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0037] Although the embodiments of the utility model have been shown and described above, it can be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the utility model. The ordinary skilled in the art can change, modify, replace and transform the above-mentioned embodiments within the scope of the utility model without departing from the principles and purposes of the utility model.

Claims

1. An adjustable armrest, comprising a rotating base (1) for fixing to a chair seat, and an armrest assembly (2) rotatably disposed on the rotating base (1); characterized in that: A rotating shaft (3) is provided at the center of the outer end face of the rotating base (1). An arc-shaped groove (11) concentrically arranged with the rotating shaft (3) is provided on the outer end face of the rotating base next to the rotating shaft (3). A positioning groove (12) is constructed on at least one side end of the bottom surface of the arc-shaped groove (11). The lower end of the handrail assembly (2) is rotatably mounted on the rotating shaft (3). A guide frame (4) is provided at the lower end of the handrail assembly (2), and a control component (5) for driving the guide frame (4) to move axially relative to the rotating shaft (3). The guide frame (4) includes an arc-shaped support leg (41), the inner end of which is embedded in... Inside the arc groove (11), the inner end of the arc support leg (41) is also equipped with a positioning post (42) for engaging in the positioning groove (12); when the control component (5) drives the guide frame (4) to move axially so that the positioning post (42) exits the positioning groove (12), the handrail assembly (2) can be limited to rotate relative to the rotating base (1); when the arc support leg (41) moves to the end of the arc groove (11) and the positioning post (42) is aligned with the positioning groove (12), the control component (5) drives the guide frame (4) to extend the positioning post (42) axially into the positioning groove (12), so that the handrail assembly (2) is fixed relative to the rotating base (1).

2. The adjustable angle handrail according to claim 1, characterized in that: The outer end face of the rotating base (1) is symmetrically provided with at least two arc-shaped grooves (11) relative to the circumference of the rotating shaft (3); the guide frame (4) is symmetrically provided with a corresponding number of arc-shaped legs (41); the inner ends of the multiple arc-shaped legs (41) on the guide frame (4) extend into the multiple arc-shaped grooves (11) of the rotating base (1).

3. The adjustable angle handrail according to claim 2, characterized in that: The guide frame (4) also includes a guide ring (43) that connects multiple arc-shaped legs (41); the rotating shaft (3) passes through the center of the guide ring (43) and its end extends out of the guide ring (43).

4. An adjustable-angle handrail according to claim 3, characterized in that: The control component (5) is rotatably mounted on the lower end of the handrail assembly (2). The control component (5) is threadedly connected to the guide frame (4). When the control component (5) rotates, it can drive the guide frame (4) to move axially.

5. An adjustable-angle handrail according to claim 4, characterized in that: The control component (5) is constructed as a toggle ring, which is sleeved on the guide ring (43), and the rotating shaft (3) passes through the center of the toggle ring and its end extends out of the toggle ring.

6. An adjustable-angle handrail according to claim 5, characterized in that: The actuating ring is also equipped with a lever (51) for hand gripping and actuation.

7. An adjustable-angle handrail according to claim 5, characterized in that: The outer wall of the guide ring (43) has an outwardly protruding guide post (44), and the side wall of the actuating ring has a guide groove (52); the guide groove (52) is constructed in a "Z" shaped groove, and the two ends of the "Z" shaped groove are located at different axial positions of the rotating shaft (3); the guide post (44) is embedded in the guide groove (52), and when the actuating ring rotates relative to the guide ring (43), the guide post (44) slides in the guide groove (52) and generates axial displacement relative to the rotating shaft (3).

8. An adjustable-angle handrail according to claim 5, characterized in that: The actuating ring has an opening (53) on its side wall for the arc-shaped support (41) to move, so as to avoid the arc-shaped support (41) when the actuating ring rotates relative to the guide ring (43).

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