A handrail

Abstract

The utility model discloses a handrail, include: handrail panel, be provided with the first rotation subassembly of toothed disc, rotary connecting piece, first clamping piece, first pivot, first elastic part, first moving part, first positioning part and support subassembly. Through the rotation rotary connecting piece, make first clamping piece slide on the toothed disc, and under the action of first elastic part and first moving part, drive first clamping piece reset movement constantly in the different position on toothed disc to realize the angle adjustment to handrail panel, through make first moving part slide on first positioning part, can change the abutment position of first moving part and first clamping piece, to make first clamping piece and toothed disc carry out meshing connection or connection to remove. Because the relative rotation between rotary connecting piece and first rotation subassembly can occur, thereby adjust the different angle between handrail panel and support subassembly, satisfy the demand of user to arm angle of placement, improved people's use comfort.

Description

Technical Field

[0001] This utility model relates to the field of seating, specifically to an armrest. Background Technology

[0002] Chairs are indispensable tools for people's lives, studies, and work. As people's living standards improve, their demands for chair comfort are also gradually increasing, especially for office workers. Due to differences in height and body shape, their requirements for armrests also vary. However, traditional chair armrests are fixed structures without adjustment functions, which cannot adapt to the needs of different users and thus cannot meet people's comfort requirements. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a handrail that can adjust the angle between the handrail panel and the support components to meet the user's needs for arm placement angle and improve user comfort.

[0004] An embodiment of the present invention provides a handrail comprising: a handrail panel; a first rotating assembly having a toothed disc; and a second rotating assembly comprising: a rotating connector, a first locking member, a first rotating shaft, a first elastic member, a first moving member, and a first positioning member; the rotating connector is connected to the handrail panel and the first positioning member respectively, the rotating connector is rotatably connected to the first rotating assembly, the first elastic member is connected to the first locking member and the first positioning member respectively, and the first rotating shaft is connected to the first positioning member; the first rotating shaft and the first locking member are in a reciprocating rotational connection, the first locking member and the first moving member are in intermittent abutment to engage with the toothed disc; the first moving member and the first positioning member are in a slidable connection to unlock or lock the first locking member and the toothed disc; and a support assembly connected to the first rotating assembly.

[0005] According to an embodiment of the present invention, a handrail has at least the following beneficial effects: By rotating the rotating connector, the first locking member slides on the gear plate, and under the action of the first elastic member and the first moving member, the first locking member is driven to continuously reset at different positions on the gear plate, thereby achieving angle adjustment of the handrail panel. By making the first moving member slide on the first positioning member, the contact position between the first moving member and the first locking member can be changed. As the contact position moves, the first locking member can be driven to rotate, thereby causing the first locking member to gradually move away from or towards the gear plate, thus enabling the first locking member to engage or disengage with the gear plate, thereby readjusting the angle of the rotating connector. Therefore, under the combined action of the gear plate, the first locking member, the first rotating shaft, the first elastic member, the first moving member, and the first positioning member, the rotating connector and the first rotating assembly can rotate relative to each other, thereby adjusting different angles between the handrail panel and the support assembly, meeting the user's needs for arm placement angle, and improving user comfort.

[0006] According to some embodiments of the present invention, the lower end of the first locking member is provided with a first locking tooth, the first locking tooth including a first tooth surface and a second tooth surface, an acute angle being formed between the first tooth surface and the second tooth surface, and the first locking tooth engaging with the toothed disc.

[0007] According to some embodiments of the present invention, the upper end of the first locking member is provided with a first stop, the upper end of the first moving member is provided with a second stop, and the first stop and the second stop are intermittently in contact.

[0008] According to some embodiments of the present invention, the first positioning member is provided with a sliding cavity, and the first moving member is located in the sliding cavity for sliding connection.

[0009] According to some embodiments of the present invention, the sliding cavity is provided with a first positioning part and a second positioning part that are connected to each other, and the first moving member is provided with a first elastic arm; the first moving member is slidably connected to the sliding cavity so that the first elastic arm is engaged with the first positioning part or the second positioning part.

[0010] According to some embodiments of the present invention, the gear plate is provided with teeth, a first driving member and a second driving member. The first driving member and the second driving member are both located outside the teeth, with the first driving member located above the teeth and the second driving member located below the teeth. The first moving member is provided with a first driving part, which abuts against the first driving member or the second driving member to drive the first elastic arm to move between the first positioning part and the second positioning part and form a locking connection.

[0011] According to some embodiments of the present invention, the support assembly includes: a first support member, a second support member, a third support member, a lifting member, and an adjustment unit. The lifting member is provided with a plurality of lifting holes in the vertical direction. The first rotating assembly is connected to the second support member and the third support member respectively. The adjustment unit is connected to the third support member. The first support member is connected to the lifting member. The adjustment unit is engaged with any of the lifting holes.

[0012] According to some embodiments of this utility model, the adjustment unit includes: a second positioning member, a second locking member, and a second elastic member. The second positioning member is connected to the lower end of the third support member, and the second elastic member is connected to both the second positioning member and the second locking member. The second positioning member is provided with a first vertical groove, a first horizontal groove, and a second vertical groove. The upper ends of the first horizontal groove and the second vertical groove are interconnected, and the first vertical groove is located above the first horizontal groove. The side of the second locking member is provided with a first locking shaft and a second locking shaft. The first locking shaft is slidably connected to the first vertical groove, and the second locking shaft forms a guide connection between the first horizontal groove and the second vertical groove, so that the second locking member can be unlocked or locked with the lifting hole.

[0013] According to some embodiments of the present invention, the lower end of the second locking member is provided with a second locking tooth, the bottom surface of the second locking tooth is set as a plane, the top surface of the second locking tooth is set as an inclined surface, the bottom surface of the second locking tooth is engaged with the lifting hole, and the top surface of the second locking tooth is slidably connected to the lifting hole.

[0014] According to some embodiments of the present invention, the upper end of the lifting member is provided with an inclined guide rail for locking the second locking member, the second locking shaft is provided with a first sliding part and a second sliding part, the second sliding part is slidably connected to the inclined guide rail so that the first sliding part slides from the first horizontal groove to the second vertical groove; the lower end of the first support member is provided with a second driving part for unlocking the second locking member, the second sliding part abuts against the second driving part so that the first sliding part slides from the second vertical groove to the first horizontal groove.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1This is a cross-sectional view of a handrail according to an embodiment of the present utility model;

[0018] Figure 2 This is a structural diagram of the first rotating assembly according to an embodiment of the present utility model;

[0019] Figure 3 This is a structural diagram of the second rotating assembly according to an embodiment of the present utility model;

[0020] Figure 4 This is an exploded view of the second rotating component according to an embodiment of the present utility model;

[0021] Figure 5 This is a cross-sectional view of the adjustment unit according to an embodiment of the present utility model;

[0022] Figure 6 This is a combination diagram of the third support member, the lifting member, and the adjusting unit according to an embodiment of the present utility model;

[0023] Figure 7 This is an exploded view of the third support member, lifting member, and adjusting unit according to an embodiment of the present utility model;

[0024] Figure 8 This is a cross-sectional view of the first support member according to an embodiment of the present utility model.

[0025] Figure label:

[0026] Armrest panel 100, first rotating assembly 200, gear plate 210, tooth 211, first drive member 212, second drive member 213, second rotating assembly 300, rotating connector 310, first locking member 320, first locking tooth 321, first stop 322, first rotating shaft 330, first elastic member 340, first moving member 350, second stop 351, first elastic arm 352, first drive part 353, first positioning member 360, sliding cavity 361, first positioning part 361 1. Second positioning part 3612, support assembly 400, first support member 410, second drive part 411, second support member 420, third support member 430, lifting member 440, lifting hole 441, inclined guide rail 442, adjustment unit 450, second positioning member 451, first vertical groove 4511, first horizontal groove 4512, second vertical groove 4513, second locking member 452, first locking shaft 4521, second locking shaft 4522, second locking tooth 4523, second elastic member 453. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the 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 the description of this utility model, the use of terms such as first, second, third, fourth, and fifth is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setup" and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] A handrail according to an embodiment of the present utility model includes: a handrail panel 100; a first rotating assembly 200, which is provided with a gear 210; and a second rotating assembly 300, which includes: a rotating connector 310, a first locking member 320, a first rotating shaft 330, a first elastic member 340, a first moving member 350, and a first positioning member 360. The rotating connector 310 is connected to the handrail panel 100 and the first positioning member 360 respectively, and the rotating connector 310 is rotatably connected to the first rotating assembly 200. The first elastic member 340 is connected to the first locking member 350. The first positioning member 320 and the first positioning member 360 are connected, and the first rotating shaft 330 is connected to the first positioning member 360; the first rotating shaft 330 and the first locking member 320 are connected in a reciprocating rotational manner, and the first locking member 320 and the first moving member 350 are intermittently abutted, so that the first locking member 320 is engaged with the gear plate 210; the first moving member 350 and the first positioning member 360 are slidably connected, so that the first locking member 320 and the gear plate 210 can be unlocked or locked; the support assembly 400 is connected to the first rotating assembly 200.

[0032] For example, such as Figures 1-4As shown, the armrest panel 100 is used to contact the user's arm, and the support component 400 is used to connect with the seat. Specifically, the first rotating component 200 is fixed, while the second rotating component 300 is in relative motion. When the armrest panel 100 needs to adjust its angle, the rotating connector 310 is rotated, causing the first locking component 320 to slide on the gear plate 210. At this time, under the action of the first elastic component 340, the first locking component 320 is driven to continuously reset at different positions on the gear plate 210. Since the first locking member 320 abuts against the first moving member 350 after each reset, it can be seen that the rotation range of the first locking member 320 can be limited under the action of the first moving member 350, thereby ensuring that the first locking member 320 can be stably engaged at different positions on the gear disk 210 without positional deviation. That is, when the first locking member 320 abuts against the first moving member 350, the first locking member 320 is engaged with the gear disk 210.

[0033] Due to the abutting action of the first moving member 350, the first locking member 320 can only move in one direction on the gear disk 210. Therefore, when the angle of the rotating connector 310 is adjusted too large, it cannot be adjusted in the opposite direction. At this time, the first moving member 350 can slide on the first positioning member 360, thereby changing the abutting position between the first moving member 350 and the first locking member 320. As the abutting position moves, the first locking member 320 can be driven to rotate, thereby causing the first locking member 320 to gradually move away from the gear disk 210, and finally the meshing connection between the first locking member 320 and the gear disk 210 is released, so the rotating connector 310 can be rotated at will.

[0034] Normally, after the engagement is disengaged, the rotating connector 310 is rotated in the opposite direction to its initial position, thereby driving the first locking member 320 to rotate to the beginning of the gear disk 210. Then, the first moving member 350 moves in the opposite direction on the first positioning member 360, thereby driving the first locking member 320 to rotate and gradually approach the gear disk 210, finally making the first locking member 320 re-engage with the gear disk 210. At this time, the angle of the rotating connector 310 can be readjusted.

[0035] As can be seen, under the combined action of the gear plate 210, the first locking member 320, the first rotating shaft 330, the first elastic member 340, the first moving member 350 and the first positioning member 360, the rotating connector 310 and the first rotating component 200 can rotate relative to each other, thereby adjusting the different angles between the armrest panel 100 and the support component 400, meeting the user's needs for the arm placement angle, and improving the user's comfort.

[0036] In some specific embodiments of this utility model, the lower end of the first locking member 320 is provided with a first locking tooth 321. The first locking tooth 321 includes a first tooth surface and a second tooth surface, and an acute angle is formed between the first tooth surface and the second tooth surface. The first locking tooth 321 is engaged with the toothed disc 210.

[0037] For example, such as Figures 1-4 As shown, an acute angle is formed between the first tooth surface and the second tooth surface, which requires the user to apply a greater force to the rotating connector 310 in order to move the first locking tooth 321 on the gear disk 210, thereby improving the stability of the meshing connection between the first locking tooth 321 and the gear disk 210.

[0038] In some specific embodiments of this utility model, the upper end of the first locking member 320 is provided with a first stop 322, and the upper end of the first moving member 350 is provided with a second stop 351. The first stop 322 and the second stop 351 are in intermittent contact.

[0039] For example, such as Figure 4 As shown, when the rotating connector 310 rotates upward, the first locking tooth 321 will be pressed downward under the action of the gear disk 210, thereby causing the first stop 322 to move away from the second stop 351; when the first locking tooth 321 rotates to the end of the meshing surface of the gear disk 210, the first elastic member 340 causes the first locking tooth 321 to jump to the next meshing surface in the gear disk 210. At this time, the first stop 322 re-abuts against the second stop 351, thus completing a reset jump of the first locking tooth 321.

[0040] Therefore, the second stop 351 can limit the rotation range of the first locking member 320, so that the first locking member 320 can stably complete each reset jump on the gear plate 210 without positional deviation, thereby achieving stable adjustment of the angle of the rotating connector 310.

[0041] In some specific embodiments of this utility model, the first positioning member 360 is provided with a sliding cavity 361, and the first moving member 350 is located in the sliding cavity 361 for sliding connection.

[0042] For example, such as Figure 3 and Figure 4 As shown, by moving the first moving member 350 within the sliding cavity 361, the contact angle between the first moving member 350 and the first locking member 320 can be adjusted, thereby driving the first locking member 320 to rotate, and thus disengaging the meshing connection between the first locking member 320 and the gear disk 210. Similarly, by moving the first moving member 350 within the sliding cavity 361 in one direction, the first locking member 320 can be driven to rotate in the opposite direction, thereby re-engaging the first locking member 320 with the gear disk 210.

[0043] Therefore, by allowing the first moving member 350 to slide in the sliding cavity 361, the state between the first locking member 320 and the gear plate 210 can be adjusted, thereby facilitating the locking or unlocking of the rotational motion, and making the angle adjustment of the armrest panel 100 more convenient and stable.

[0044] In some specific embodiments of this utility model, the sliding cavity 361 is provided with a first positioning part 3611 and a second positioning part 3612 that are connected to each other, and the first moving member 350 is provided with a first elastic arm 352; the first moving member 350 is slidably connected to the sliding cavity 361 so that the first elastic arm 352 is engaged with the first positioning part 3611 or the second positioning part 3612.

[0045] For example, such as Figure 3 and Figure 4 As shown, when the first elastic arm 352 moves from the first positioning part 3611 to the second positioning part 3612, or from the second positioning part 3612 to the first positioning part 3611, the first elastic arm 352 undergoes elastic deformation, thus enabling it to smoothly complete the positional change. When the first elastic arm 352 is engaged with the first positioning part 3611 or the second positioning part 3612, the first locking member 320 is in a stationary state, and the first locking member 320 and the gear disk 210 are in an engaged or disengaged state. It can be seen that different engagement positions of the first elastic arm 352 will cause changes in the connection state between the first locking member 320 and the gear disk 210.

[0046] In some specific embodiments of this utility model, the gear disk 210 is provided with teeth 211, a first driving member 212 and a second driving member 213. The first driving member 212 and the second driving member 213 are both located outside the teeth 211, with the first driving member 212 located above the teeth 211 and the second driving member 213 located below the teeth 211. The first moving member 350 is provided with a first driving part 353, which abuts against the first driving member 212 or the second driving member 213 to drive the first elastic arm 352 to move between the first positioning part 3611 and the second positioning part 3612 and form a locking connection.

[0047] For example, such as Figures 1-4 As shown, when the rotating connector 310 rotates upward to the maximum rotation angle, the first driving part 353 abuts against the first driving member 212. If the rotating connector 310 continues to rotate upward, the pressure between the first driving part 353 and the first driving member 212 will gradually increase, and drive the first moving member 350 to move downward in the sliding cavity 361, thereby driving the first locking member 320 to rotate downward so that the first locking member 320 and the toothed part 211 can be engaged or disengaged.

[0048] When the rotating connector 310 rotates downward to the minimum rotation angle, the first driving part 353 abuts against the second driving part 213. If the rotating connector 310 continues to rotate downward, the pressure between the first driving part 353 and the second driving part 213 will gradually increase, and drive the first moving part 350 to move upward in the sliding cavity 361, thereby driving the first locking part 320 to rotate upward so that the first locking part 320 and the toothed part 211 can be engaged or disengaged.

[0049] Therefore, by adjusting the contact between the first driving part 353 and the first driving member 212 and the second driving member 213, the first moving member 350 can be driven to move in the sliding cavity 361, thereby adjusting the state between the first locking member 320 and the gear plate 210, which facilitates locking or unlocking the rotational movement of the rotating connecting member 310.

[0050] In some specific embodiments of this utility model, the support assembly 400 includes: a first support member 410, a second support member 420, a third support member 430, a lifting member 440, and an adjustment unit 450. The lifting member 440 is provided with a plurality of lifting holes 441 in the vertical direction. The first rotating assembly 200 is connected to the second support member 420 and the third support member 430 respectively. The adjustment unit 450 is connected to the third support member 430. The first support member 410 is connected to the lifting member 441. The adjustment unit 450 is engaged with any of the lifting holes 441.

[0051] For example, such as Figure 1 , Figure 5 and Figure 6 As shown, when the armrest panel 100 needs to be adjusted in height, an upward pulling force is applied to the second support member 420, causing the second support member 420 to drive the third support member 430 and the adjustment unit 450 to move upward, thereby causing relative movement between the adjustment unit 450 and the lifting member 440; when the second support member 420 moves up to the target height, the adjustment unit 450 engages with the lifting hole 441 at that height, thereby fixing the position of the second support member 420, thus realizing the height adjustment of the armrest panel 100, meeting the user's needs for arm placement height, and improving the user's comfort.

[0052] In some specific embodiments of this utility model, the adjustment unit 450 includes: a second positioning member 451, a second locking member 452, and a second elastic member 453. The second positioning member 451 is connected to the lower end of the third support member 430, and the second elastic member 453 is connected to the second positioning member 451 and the second locking member 452 respectively. The second positioning member 451 is provided with a first vertical groove 4511, a first horizontal groove 4512, and a second vertical groove 4513. The upper ends of the first horizontal groove 4512 and the second vertical groove 4513 are interconnected, and the first vertical groove 4511 is located above the first horizontal groove 4512. The side of the second locking member 452 is provided with a first locking shaft 4521 and a second locking shaft 4522. The first locking shaft 4521 is slidably connected to the first vertical groove 4511, and the second locking shaft 4522 forms a guide connection between the first horizontal groove 4512 and the second vertical groove 4513, so that the second locking member 452 can be unlocked or locked with the lifting hole 441.

[0053] For example, such as Figure 7 As shown, when the second locking member 452 and the lifting hole 441 are locked, the first locking shaft 4521 is located at the top of the first vertical groove 4511, and the second locking shaft 4522 is located in the first horizontal groove 4512. At this time, the second support member 420 can be height adjusted, that is, the second support member 420 can move upward. Therefore, the second locking member 452 can slide between the lifting holes 441 under the action of the second elastic member 453 and be locked in any lifting hole 441.

[0054] During the process of the second locking member 452 changing from a locked state to an unlocked state with the lifting hole 441, the second locking shaft 4522 slides from the first horizontal groove 4512 towards the second vertical groove 4513, while the first locking shaft 4521 slides downward in the first vertical groove 4511. This causes the second locking member 452 to gradually move away from the lifting hole 441, thus releasing the locking connection between the two. At this time, there is no connection between the third support member 430 and the first support member 410, so the second support member 420 and the third support member 430 are in a free-moving state.

[0055] When the height of the second support member 420 needs to be readjusted, simply slide the second locking shaft 4522 from the second vertical groove 4513 toward the first horizontal groove 4512, while the first locking shaft 4521 slides upward in the first vertical groove 4511, so that the second locking member 452 gradually approaches the lifting hole 441 and forms a locking connection between the two. At this time, the second locking member 452 and the lifting hole 441 are locked again.

[0056] In some specific embodiments of this utility model, the lower end of the second locking member 452 is provided with a second locking tooth 4523. The bottom surface of the second locking tooth 4523 is set as a plane, the top surface of the second locking tooth 4523 is set as an inclined surface, the bottom surface of the second locking tooth 4523 is engaged with the lifting hole 441, and the top surface of the second locking tooth 4523 is slidably connected with the lifting hole 441.

[0057] For example, such as Figure 7 As shown, because the top surface of the second locking tooth 4523 is set as an inclined surface, the second locking tooth 4523 can move upward. During the movement, the inclined surface of the second locking tooth 4523 gradually slides out along the lifting hole 441 and slides into the next lifting hole 441 as the height changes. However, because the bottom surface of the second locking tooth 4523 is set as a flat surface, a stable engaging connection is formed between the bottom surface of the second locking tooth 4523 and the lifting hole 441, preventing the second locking tooth 4523 from moving downward, thereby improving the stability of the handrail panel 100.

[0058] In some specific embodiments of this utility model, the upper end of the lifting member 440 is provided with an inclined guide rail 442 for locking the second locking member 452, and the second locking shaft 4522 is provided with a first sliding part and a second sliding part. The second sliding part is slidably connected to the inclined guide rail 442 so that the first sliding part slides from the first horizontal groove 4512 to the second vertical groove 4513. The lower end of the first support member 410 is provided with a second driving part 411 for unlocking the second locking member 452, and the second sliding part abuts against the second driving part 411 so that the first sliding part slides from the second vertical groove 4513 to the first horizontal groove 4512.

[0059] For example, such as Figure 7 and Figure 8 As shown, the second locking shaft 4522 is slidably connected to the first horizontal groove 4512 and the second vertical groove 4513 through the first sliding part, and the second sliding part protrudes from the outside of the first horizontal groove 4512 and the second vertical groove 4513.

[0060] When the second support member 420 moves up to a certain position, the second sliding part contacts the lowest point of the inclined guide rail 442, and the second sliding part slides into the inclined guide rail 442 from the lowest point, thereby driving the first sliding part to slide from the first horizontal groove 4512 to the second vertical groove 4513, and causing it to drive the first locking shaft 4521 to slide downward in the first vertical groove 4511, thereby causing the second locking member 452 to gradually move away from the lifting hole 441, and releasing the locking connection between the second locking member 452 and the lifting hole 441. Therefore, the second support member 420 and the third support member 430 are in a free-moving state.

[0061] When the height of the second support member 420 needs to be readjusted, the second support member 420 is moved downward until the second sliding part abuts against the second driving part 411. Then, a downward force is applied to the second support member 420, so that the second sliding part, under the pressure of the second driving part 411, drives the first sliding part to slide from the second vertical groove 4513 to the first horizontal groove 4512. At the same time, the first locking shaft 4521 is driven to slide upward in the first vertical groove 4511, so that the second locking member 452 gradually approaches the lifting hole 441 and forms a locking connection between the second locking member 452 and the lifting hole 441. Therefore, the second support member 420 is re-fixed.

[0062] Other configurations and operations of a handrail according to an embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0063] The following is for reference. Figures 1-8 The present invention describes in detail a handrail according to an embodiment of the present invention with a specific example. It is worth understanding that the following description is merely illustrative and not a specific limitation of the present invention.

[0064] A handrail includes: a handrail panel 100, a rotating connector 310, a first locking member 320, a first rotating shaft 330, a first elastic member 340, a first moving member 350, a first positioning member 360, a first rotating assembly 200, a first support member 410, a second support member 420, a third support member 430, a lifting member 440, a second positioning member 451, a second locking member 452, and a second elastic member 453.

[0065] The rotating connector 310 is connected to the armrest panel 100 and the first positioning member 360 respectively. The rotating connector 310 is rotatably connected to the first rotating assembly 200. The first elastic member 340 is connected to the first locking member 320 and the first positioning member 360 respectively. The first rotating shaft 330 is connected to the first positioning member 360. The first rotating shaft 330 and the first locking member 320 are in a reciprocating rotating connection.

[0066] The first locking member 320 has a first stop 322 at its upper end; the first moving member 350 has a first elastic arm 352 and a second stop 351 at its upper end, and a first driving part 353 at its lower end; the first positioning member 360 has a sliding cavity 361, and the sliding cavity 361 has a first positioning part 3611 and a second positioning part 3612 connected to each other. The first stop 322 and the second stop 351 are in intermittent contact, the first moving member 350 is slidably connected to the sliding cavity 361, and the first elastic arm 352 slides between the first positioning part 3611 and the second positioning part 3612 and forms a locking connection.

[0067] The lower end of the first locking member 320 is provided with a first locking tooth 321, which includes a first tooth surface and a second tooth surface, and an acute angle is formed between the first tooth surface and the second tooth surface. The gear disk 210 is provided with a tooth portion 211, a first driving member 212 and a second driving member 213. The first driving member 212 and the second driving member 213 are both located outside the tooth portion 211, and the first driving member 212 is located above the tooth portion 211, and the second driving member 213 is located below the tooth portion 211. The first locking tooth 321 is engaged with the gear disk 210, and the first driving part 353 abuts against the first driving member 212 or the second driving member 213.

[0068] The first rotating component 200 is connected to the second support member 420 and the third support member 430 respectively. The first support member 410 is connected to the lifting member 440. The second positioning member 451 is connected to the lower end of the third support member 430. The second elastic member 453 is connected to the second positioning member 451 and the second locking member 452 respectively.

[0069] The lifting member 440 has several lifting holes 441 in the vertical direction. The upper end of the lifting member 440 is provided with an inclined guide rail 442. The lower end of the first support member 410 is provided with a second driving part 411. The second positioning member 451 is provided with a first vertical groove 4511, a first horizontal groove 4512 and a second vertical groove 4513. The upper ends of the first horizontal groove 4512 and the second vertical groove 4513 are interconnected. The first vertical groove 4511 is located above the first horizontal groove 4512. The side of the second locking member 452 is provided with a first locking shaft 4521 and a second locking shaft 4522. The second locking shaft 4522 includes a first sliding part and a second sliding part. The lower end of the second locking member 452 is provided with a second locking tooth 4523. The bottom surface of the second locking tooth 4523 is set as a plane and the top surface of the second locking tooth 4523 is set as an inclined surface.

[0070] The bottom surface of the second locking tooth 4523 is engaged with the lifting hole 441, the top surface of the second locking tooth 4523 is slidably connected with the lifting hole 441, the first locking shaft 4521 is slidably connected with the first vertical groove 4511, the first sliding part is slidably connected between the first horizontal groove 4512 and the second vertical groove 4513, the second sliding part is slidably connected with the inclined guide rail 442, and the second sliding part abuts against the second driving part 411.

[0071] According to an embodiment of the present utility model, a handrail can achieve at least the following effects by being configured such that the handrail can be adjusted in angle and height, is highly practical, can meet the user's needs for the angle and height of arm placement, and improves the user's comfort.

[0072] (1) Steps for adjusting the angle of the armrest:

[0073] The position of the tooth 211 closest to the first driving member 212 is defined as the beginning, and the position of the tooth 211 closest to the second driving member 213 is defined as the end. When the first locking tooth 321 moves upward on the gear disk 210, under the action of the first elastic member 340, the first stop 322 and the second stop 351, the first locking member 320 and the first rotating shaft 330 are continuously connected in a reciprocating rotation, and the first stop 322 and the second stop 351 are continuously and intermittently abutting each other. Since the second stop 351 can limit the rotation range of the first locking member 320, the first locking tooth 321 can stably complete each reset jump on the gear disk 210 without positional deviation, thereby achieving stable adjustment of the angle of the rotating connector 310.

[0074] When the angle of the rotating connector 310 is adjusted too large and it is necessary to reduce the rotation angle, the rotating connector 310 is rotated upward to reach the maximum rotation angle, and the first driving part 353 abuts against the first driving part 212. Then, the rotating connector 310 is rotated upward, and the pressure between the first driving part 353 and the first driving part 212 gradually increases, driving the first moving part 350 to move downward in the sliding cavity 361. Therefore, the first elastic arm 352 moves from the first positioning part 3611 to the second positioning part 3612, thereby driving the first locking part 320 to rotate downward, so that the meshing connection between the first locking tooth 321 and the tooth 211 is released. At this time, the first locking part 320 is in the unlocked state, so the up and down rotation of the rotating connector 310 is no longer restricted. However, the rotating connector 310 cannot be fixed in any position at the same time, that is, the rotating connector 310 is in a free-moving state.

[0075] Next, the rotating connector 310 is rotated downwards to the minimum rotation angle. At this time, the first driving part 353 abuts against the second driving part 213. Then, the rotating connector 310 is rotated downwards again, and the pressure between the first driving part 353 and the second driving part 213 will gradually increase, driving the first moving part 350 to move upwards in the sliding cavity 361. Therefore, the first elastic arm 352 moves from the second positioning part 3612 to the first positioning part 3611, thereby driving the first locking part 320 to rotate upwards, so that the first locking part 320 and the tooth part 211 are re-engaged. It can be seen that the first locking part 320 is in a locked state, so the rotating connector 310 is re-fixed, and thus the rotation angle of the rotating connector 310 can be readjusted.

[0076] (2) Steps for adjusting the height of the handrail:

[0077] When the second locking tooth 4523 is locked to the lifting hole 441, the first locking shaft 4521 is located at the top of the first vertical groove 4511, and the first sliding part is located in the first horizontal groove 4512. At this time, the second support member 420 can be height adjusted, that is, the second support member 420 can move upward, so that the second locking tooth 4523 can slide between the lifting holes 441 under the action of the second elastic member 453 and be locked in any lifting hole 441.

[0078] When the height adjustment of the second support member 420 is too large and it is necessary to lower the height, the second support member 420 is moved to the highest position and the second locking tooth 4523 is connected with the highest lifting hole 441. The second sliding part contacts the lowest point of the inclined guide rail 442. Then, a pulling force is applied to the second support member 420, causing the second sliding part to slide from the lowest point into the inclined guide rail 442. This drives the first sliding part to slide from the first horizontal groove 4512 to the second vertical groove 4513, causing the second locking member 452 to move downward and driving the first locking shaft 4521 to slide downward in the first vertical groove 4511. This causes the second locking tooth 4523 to gradually move away from the lifting hole 441 and release the locking connection between the two. At this time, the second locking member 452 is in the unlocked state, so the lifting and lowering movement of the second support member 420 and the third support member 430 is no longer restricted. However, the second support member 420 and the third support member 430 cannot be fixed in any position, that is, the second support member 420 and the third support member 430 are in a free-moving state.

[0079] Next, the second support member 420 is lowered to its lowest position, at which point the second sliding part abuts against the second driving part 411. Then, the second support member 420 is pressed down further, and a downward force is applied to it. Under the pressure of the second driving part 411, the second sliding part drives the first sliding part to slide from the second vertical groove 4513 toward the first horizontal groove 4512. At the same time, the first locking shaft 4521 is driven to slide upward in the first vertical groove 4511, thereby causing the second locking tooth 4523 to gradually approach the lifting hole 441 and form a locking connection between them. Thus, the second support member 420 is re-fixed, and the height of the second support member 420 can be readjusted.

[0080] In the description of this specification, references to terms such as "one embodiment," "some embodiments," or "this embodiment," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A handrail, characterized in that, include: Armrest panel; The first rotating component is equipped with a toothed disc; The second rotating assembly includes: a rotating connector, a first locking member, a first rotating shaft, a first elastic member, a first moving member, and a first positioning member; the rotating connector is connected to the armrest panel and the first positioning member respectively, and the rotating connector is rotatably connected to the first rotating assembly; the first elastic member is connected to the first locking member and the first positioning member respectively, and the first rotating shaft is connected to the first positioning member; the first rotating shaft and the first locking member are in a reciprocating rotational connection, and the first locking member and the first moving member are in intermittent abutment to allow the first locking member to engage with the gear plate; the first moving member and the first positioning member are in a slidable connection to allow the first locking member to unlock or lock with the gear plate. A support component is connected to the first rotating component.

2. The handrail according to claim 1, characterized in that: The lower end of the first locking member is provided with a first locking tooth, which includes a first tooth surface and a second tooth surface. An acute angle is formed between the first tooth surface and the second tooth surface, and the first locking tooth engages with the toothed disc.

3. A handrail according to claim 2, characterized in that: The first locking member has a first stop at its upper end, and the first moving member has a second stop at its upper end. The first stop and the second stop are in intermittent contact.

4. A handrail according to claim 1, characterized in that: The first positioning member is provided with a sliding cavity, and the first moving member is located in the sliding cavity for sliding connection.

5. A handrail according to claim 4, characterized in that: The sliding cavity is provided with a first positioning part and a second positioning part that are connected to each other, and the first moving member is provided with a first elastic arm; the first moving member is slidably connected to the sliding cavity so that the first elastic arm is engaged with the first positioning part or the second positioning part.

6. A handrail according to claim 5, characterized in that: The gear plate is provided with teeth, a first driving member and a second driving member. The first driving member and the second driving member are both located outside the teeth, with the first driving member located above the teeth and the second driving member located below the teeth. The first moving member is provided with a first driving part, which abuts against the first driving member or the second driving member to drive the first elastic arm to move between the first positioning part and the second positioning part and form a locking connection.

7. A handrail according to claim 1, characterized in that: The support assembly includes: a first support member, a second support member, a third support member, a lifting member, and an adjustment unit. The lifting member has a plurality of lifting holes in the vertical direction. The first rotating assembly is connected to the second support member and the third support member respectively. The adjustment unit is connected to the third support member. The first support member is connected to the lifting member. The adjustment unit is engaged with any of the lifting holes.

8. A handrail according to claim 7, characterized in that: The adjustment unit includes: a second positioning member, a second locking member, and a second elastic member. The second positioning member is connected to the lower end of the third support member, and the second elastic member is connected to both the second positioning member and the second locking member. The second positioning member is provided with a first vertical groove, a first horizontal groove, and a second vertical groove. The upper ends of the first horizontal groove and the second vertical groove are interconnected, and the first vertical groove is located above the first horizontal groove. The side of the second locking member is provided with a first locking shaft and a second locking shaft. The first locking shaft is slidably connected to the first vertical groove, and the second locking shaft forms a guide connection between the first horizontal groove and the second vertical groove, so that the second locking member can be unlocked or locked with the lifting hole.

9. A handrail according to claim 8, characterized in that: The lower end of the second locking member is provided with a second locking tooth. The bottom surface of the second locking tooth is set as a plane, and the top surface of the second locking tooth is set as an inclined surface. The bottom surface of the second locking tooth is engaged with the lifting hole, and the top surface of the second locking tooth is slidably connected to the lifting hole.

10. A handrail according to claim 8, characterized in that: The upper end of the lifting member is provided with an inclined guide rail for locking the second locking member. The second locking shaft is provided with a first sliding part and a second sliding part. The second sliding part is slidably connected to the inclined guide rail so that the first sliding part slides from the first horizontal groove to the second vertical groove. The lower end of the first support member is provided with a second driving part for unlocking the second locking member. The second sliding part abuts against the second driving part so that the first sliding part slides from the second vertical groove to the first horizontal groove.

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