Armrest device and seat

Abstract

The invention discloses an armrest device and a seat. The armrest device comprises a connecting arm and a supporting assembly, and a sliding rod is arranged at the upper end of the connecting arm; the supporting assembly comprises an armrest pad, a lifting sleeve and a lifting control mechanism, the armrest pad is arranged at the upper end of the lifting sleeve, the lifting structure is connected to the lifting sleeve, the lifting sleeve is arranged on the connecting arm in a sleeving mode, the lifting control mechanism comprises a lifting base, a clamping piece, a lifting control piece and an elastic supporting piece, and the clamping piece is movably connected to the lifting base and provided with a clamping groove; the lifting seat is connected to the lifting sleeve and can move up and down relative to the sliding rod, the sliding rod penetrates through the clamping groove, the elastic supporting piece is arranged on the lifting seat and located on one side of the clamping piece, the upper end of the elastic supporting piece abuts against the clamping piece, so that the inner wall of the clamping groove abuts against the outer wall of the sliding rod, and the lifting control piece is connected to the lifting sleeve and can press the clamping piece downwards. According to the armrest device, free stepless adjustment of the height of the armrest can be achieved, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of seats, and in particular to an armrest device and a seat. Background Art

[0002] A seat generally includes a seat cushion, a backrest, a lumbar support and armrests. The armrests can be raised and lowered to support the user's hands. However, in the related art, the armrests of some seats require buttons to control the up and down movement, and have gears; the armrests of another part of the seats have no buttons, but the armrests need to be pulled to the highest stroke to reset. Both of these armrests cannot achieve free adjustment of the armrest height. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides an armrest device that can realize free and stepless adjustment of the armrest height, greatly improving the user experience.

[0004] In a second aspect, the present invention also proposes a chair using the above-mentioned armrest device.

[0005] According to the first aspect of the present invention, an armrest device is provided, comprising: A connecting arm, the upper end of which is provided with a sliding rod extending upward; The support assembly comprises an armrest pad, a lifting sleeve and a lifting control mechanism, wherein the armrest pad is arranged at the upper end of the lifting sleeve, the lifting structure is connected to the lifting sleeve, the lifting sleeve is arranged on the connecting arm, the lifting control mechanism comprises a lifting seat, a clamping member, a lifting control member and an elastic support member, an installation cavity is arranged inside the lifting seat, the clamping member is arranged on the lifting seat and both ends can move up and down in the installation cavity, the clamping member is provided with a clamping groove running through the upper and lower parts, the lifting seat is connected to the lifting sleeve and can move up and down relative to the sliding rod, the sliding rod is penetrated by the clamping groove, the elastic support member is arranged on the lifting seat and is located on one side of the clamping member, the upper end of the elastic support member abuts against the clamping member so that the clamping member forms an angle with the horizontal direction, so that the inner wall of the clamping groove abuts against the outer wall of the sliding rod, the lifting control member is connected to the lifting sleeve, and the lifting control member is configured to be able to press down the clamping member so that the clamping member is parallel to the horizontal direction, and the inner wall of the clamping groove is separated from the outer wall of the sliding rod.

[0006] The armrest device provided in accordance with the embodiment of the first aspect of the present invention has at least the following beneficial effects: through the cooperation between the clamping parts and the sliding rod in the lifting control mechanism, the armrest pad can be stably supported at any height, and the user can adjust the position of the armrest pad at any height according to their needs without being restricted by fixed gears or complicated operating methods. This not only improves the adaptability and comfort of the armrest device, but also greatly improves the user experience.

[0007] According to the armrest device provided in the embodiment of the first aspect of the present invention, the lifting control mechanism also includes a transmission member, which is arranged on the lifting seat and can slide up and down, the lower end of the transmission member abuts against the upper side of the clamping member close to one end of the elastic support member, and the upper end is located on the lower side of the lifting control member, the lifting control member can push the transmission member downward, and the downward movement of the transmission member can press down the clamping member.

[0008] According to the armrest device provided by the embodiment of the first aspect of the present invention, the lifting seat is provided with a slide groove penetrating from top to bottom, and the transmission member is inserted in the slide groove and can slide up and down.

[0009] According to the armrest device provided by the embodiment of the first aspect of the present invention, the lifting control member includes a rotating part and a pressing part, a crimping plate is arranged on the top of the transmission member, the lifting control member is rotatably connected to the lifting sleeve, the rotating part extends forward to the front side of the lifting sleeve, the pressing part extends backward and abuts against the upper end of the crimping plate, and the rotating part can rotate upward so that the pressing part pushes the transmission member downward.

[0010] According to the armrest device provided by the embodiment of the first aspect of the present invention, the rotating portion is located at the lower side of the armrest pad.

[0011] According to the armrest device provided by the embodiment of the first aspect of the present invention, a lifting channel is provided in the lifting seat, the lifting channel is communicated with the clamping groove, and the sliding rod is penetrated through the clamping groove and the lifting channel.

[0012] According to the armrest device provided by the embodiment of the first aspect of the present invention, a guide groove arranged from top to bottom is provided in the middle of the slide rod, the lifting seat is connected to a guide rod, and the guide rod is located in the lifting channel and passes through the guide groove.

[0013] According to the armrest device provided by the embodiment of the first aspect of the present invention, the inner peripheral wall of the lifting sleeve is provided with a plurality of crimping ribs, and the end surfaces of the plurality of crimping ribs abut against the outer wall of the lifting seat.

[0014] According to the armrest device provided by the embodiment of the first aspect of the present invention, a receiving groove is provided in the lifting seat, the elastic support member is a spring, the lower end of the spring is provided in the receiving groove, and the upper end abuts against the lower end of the clamping member.

[0015] The seat provided in the embodiment according to the second aspect of the present invention has all the beneficial effects of the embodiment according to the first aspect of the present invention.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 An overall schematic diagram of an armrest device provided by an embodiment of the present invention; Figure 2 A schematic diagram of the internal structure of an armrest device is provided for an embodiment of the present invention; Figure 3 A schematic diagram of the structure of the handrail device provided by an embodiment of the present invention when it is extended or retracted; Figure 4 A cross-sectional view of an armrest device provided in an embodiment of the present invention; Figure 5 A cross-sectional view of the handrail device provided by an embodiment of the present invention when it is extended or retracted; Figure 6 An exploded schematic diagram of an armrest device provided in an embodiment of the present invention; Figure 7 This is a cross-sectional view of an exploded handrail device provided by an embodiment of the present invention.

[0018] The figures are as follows: Connecting arm 1000; sliding rod 1100; guide groove 1110; Support assembly 2000; armrest pad 2100; lifting sleeve 2200; crimping rib 2210; lifting control mechanism 2300; lifting seat 2310; slide groove 2311; lifting channel 2312; guide rod 2313; accommodating groove 2314; clamping member 2320; clamping groove 2321; lifting control member 2330; rotating part 2331; pressing part 2332; elastic support member 2340; transmission member 2350; crimping plate 2351. DETAILED DESCRIPTION

[0019] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] In the description of the present invention, it is necessary to understand that descriptions involving orientation, such as up, down, left, right, etc., the orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0021] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0023] An embodiment of the present invention provides an armrest device, which is applied to a seat. The specific structure and function of the armrest device provided by the embodiment of the present invention will be further described below with reference to text and drawings.

[0024] Reference Figures 1 to 7 According to the first aspect of the present invention, the armrest device provided by the embodiment comprises: a connecting arm 1000 and a supporting assembly 2000, wherein the upper end of the connecting arm 1000 is provided with a sliding bar 1100 extending upward. The surface of the sliding bar 1100 is flat, so that it is convenient to cooperate with the clamping member 2320 in the lifting control mechanism 2300 to realize the lifting function of the armrest pad 2100. The supporting assembly 2000 comprises an armrest pad 2100, a lifting sleeve 2200 and a lifting control mechanism 2300. The armrest pad 2100 is arranged at the upper end of the lifting sleeve 2200 to provide a comfortable support surface for the user. The lifting sleeve 2200 is sleeved on the connecting arm 1000 and can move up and down along the connecting arm 1000, thereby driving the lifting of the armrest pad 2100. The lifting control mechanism 2300 comprises a lifting seat 2310, a clamping member 2320, a lifting control member 2330 and an elastic support member 2340. The lifting seat 2310 is connected to the lifting sleeve 2200 and can move up and down relative to the slide bar 1100. The clamping member 2320 is movably connected to the lifting seat 2310 and is provided with a clamping groove 2321 that penetrates up and down. The slide bar 1100 is inserted into the clamping groove 2321, and the lifting sleeve 2200 is stably supported by the friction between the inner wall of the clamping groove 2321 and the outer wall of the slide bar 1100. The elastic support member 2340 is provided on one side of the lifting seat 2310, and its upper end abuts against the clamping member 2320. Under the action of the elastic support member 2340, the clamping member 2320 forms a certain angle with the horizontal direction, so that the inner wall of the clamping groove 2321 is tightly abutted against the outer wall of the slide bar 1100.

[0025] The lifting control member 2330 is connected to the lifting sleeve 2200 and is configured to be able to press down the clamping member 2320. When the user needs to lower the armrest pad 2100, he only needs to operate the lifting control member 2330 to press down the clamping member 2320. Under the action of the lifting control member 2330, the clamping member 2320 is parallel to the horizontal direction, and the inner wall of the clamping groove 2321 is separated from the outer wall of the slide bar 1100. At this time, the lifting sleeve 2200 can be smoothly lowered under the action of gravity or the manual push of the user, thereby realizing the lowering function of the armrest pad 2100.

[0026] According to the armrest device provided in the embodiment of the first aspect of the present invention, the armrest pad 2100 can be stably supported at any height through the cooperation between the clamping piece 2320 in the lifting control mechanism 2300 and the sliding rod 1100. The user can adjust the position of the armrest pad 2100 at any height according to their needs without being restricted by fixed gears or complicated operating methods. This not only improves the adaptability and comfort of the armrest device, but also greatly enhances the user experience.

[0027] Reference Figures 4 to 7 It is understandable that when the user needs to raise the height of the armrest pad 2100, an upward force will be applied to the armrest pad 2100 or the lifting sleeve 2200. Since the lifting sleeve 2200 is connected to the lifting seat 2310, the upward force will be transmitted to the lifting seat 2310, thereby driving the entire lifting control mechanism 2300 to move upward. In the process of the lifting seat 2310 moving upward, the clamping member 2320 also rises relative to the slide bar 1100. As the clamping member 2320 continues to rise, the inner wall of the clamping groove 2321 will gradually become parallel to the outer wall area of ​​the slide bar 1100, so that the friction between the clamping member 2320 and the slide bar 1100 is small, and the lifting seat 2310 and the lifting sleeve 2200 can rise smoothly. When the user stops applying force, under the action of gravity, the clamping member 2320 tends to fall relative to the slide bar 1100. Second, because the elastic support member 2340 maintains abutment against one side of the clamping member 2320, the clamping member 2320 tends to approach the slide bar 1100, so that the clamping member 2320 forms a certain angle with the horizontal direction. This approaching tendency will be transformed into a close fit between the inner wall of the clamping groove 2321 and the outer wall of the slide bar 1100. This fit state provides sufficient friction, so that the lifting sleeve 2200 (and the armrest pad 2100) can stay stably at any height. When the user needs to lower the armrest pad 2100, he only needs to operate the lifting control member 2330 to press the clamping member 2320 downward. Under the action of the lifting control member 2330, the clamping member 2320 is parallel to the horizontal direction, and the inner wall of the clamping groove 2321 is separated from the outer wall of the slide bar 1100. At this time, the lifting sleeve 2200 can be smoothly lowered under the action of gravity or the manual push of the user, thereby realizing the lowering function of the armrest pad 2100.

[0028] Reference Figure 5 and Figure 6 It can be understood that the interior of the lifting seat 2310 is provided with an installation cavity for installing the clamping member 2320, and one side of the lifting seat 2310 is provided with an installation port connected to the installation cavity. The clamping member 2320 enters the installation cavity after passing through the installation port. Both ends of the clamping member 2320 can move in a certain up and down direction in the installation cavity, so that in the process of the lifting seat 2310 rising, the clamping member 2320 also rises relative to the sliding rod 1100. As the clamping member 2320 continues to rise, the inner wall of the clamping groove 2321 will gradually become parallel to the outer wall area of ​​the sliding rod 1100, so that the friction between the clamping member 2320 and the sliding rod 1100 is small.

[0029] Reference Figure 2 , Figure 4 and Figure 5 According to the armrest device provided by the embodiment of the first aspect of the present invention, the lifting control mechanism 2300 also includes a transmission member 2350, which is rod-shaped and is arranged on the lifting seat 2310, and can slide up and down along the lifting seat 2310. The lower end of the transmission member 2350 abuts against the upper side of the clamping member 2320 close to the elastic support member 2340, and the upper end is located at the lower side of the lifting control member 2330. When the user needs to lower the armrest pad 2100, the lifting control member 2330 can be operated to push the transmission member 2350 to slide downward. Since the lower end of the transmission member 2350 abuts against the upper side of the clamping member 2320, the downward movement of the transmission member 2350 will drive the clamping member 2320 to move downward together. When the transmission member 2350 presses the clamping member 2320, the clamping member 2320 gradually becomes parallel to the horizontal direction, and the friction between the inner wall of the clamping groove 2321 and the outer wall of the slide bar 1100 gradually decreases until they are completely separated. At this time, the lifting sleeve 2200 (and the armrest pad 2100) can be smoothly lowered under the action of gravity or manually pushed by the user.

[0030] Reference Figure 4 and Figure 5 According to the handrail device provided by the embodiment of the first aspect of the present invention, the lifting seat 2310 is provided with a slide groove 2311 running through from top to bottom, and the size and shape of the slide groove 2311 match the outer contour of the transmission member 2350, so that the transmission member 2350 can be tightly inserted in the slide groove 2311 and can slide up and down in the slide groove 2311. The design of the slide groove 2311 not only provides stable support and guidance for the transmission member 2350, but also ensures the stability and accuracy of the transmission member 2350 during the sliding process.

[0031] When the lifting control member 2330 is operated, the transmission member 2350 is pushed downward. Since the transmission member 2350 is inserted into the slide groove 2311, the transmission member 2350 will slide downward along the guide of the slide groove 2311 when it is subjected to the thrust. At the same time, the lower end of the transmission member 2350 will abut against the upper side of the clamping member 2320, thereby driving the clamping member 2320 to move downward together. Through the cooperation of the slide groove 2311 and the transmission member 2350, this embodiment realizes the stable sliding of the transmission member 2350 on the lifting seat 2310, thereby ensuring the effective control of the clamping member 2320 by the lifting control member 2330. This not only improves the reliability and durability of the armrest device, but also makes the armrest more stable and smooth during the lifting process.

[0032] Reference Figure 4 and Figure 5 According to the armrest device provided by the embodiment of the first aspect of the present invention, the lifting control member 2330 includes a rotating portion 2331 and a pressing portion 2332, and a pressing plate 2351 is provided on the top of the transmission member 2350. The lifting control member 2330 includes two parts: the rotating portion 2331 and the pressing portion 2332. The rotating portion 2331 extends forward to the front side of the lifting sleeve 2200 to facilitate user operation; the pressing portion 2332 extends backward and contacts the pressing plate 2351 provided on the top of the transmission member 2350. The lifting control member 2330 is installed on the lifting sleeve 2200 by a rotating connection, so that the rotating portion 2331 can rotate up and down relative to the lifting sleeve 2200.

[0033] When the user needs to adjust the height of the armrest, it can be achieved by rotating the rotating part 2331 of the lifting control member 2330 upward. As the rotating part 2331 rotates upward, the pressing part 2332 will move downward accordingly. Since the lower end of the pressing part 2332 abuts against the crimping plate 2351 of the transmission member 2350, the downward movement of the pressing part 2332 will directly push the transmission member 2350 to slide downward. After being acted upon by the thrust of the pressing part 2332, the transmission member 2350 will slide downward along the slide groove 2311 on the lifting seat 2310 and abut against the clamping member 2320, making it parallel to the horizontal direction, thereby separating the inner wall of the clamping groove 2321 from the outer wall of the slide rod 1100. At this point, the user can easily adjust the height of the armrest and realize stepless adjustment of the armrest.

[0034] It is understandable that, in addition to transmission by the transmission member 2350, a pull rope can also be used in conjunction with a steering pulley to pull one end of the clamping member 2320 downward.

[0035] Reference Figures 1 to 4According to the armrest device provided by the embodiment of the first aspect of the present invention, the rotating part 2331 is located at the lower side of the armrest pad 2100, so that the rotating part 2331 does not affect the normal use of the armrest pad 2100 and can also be convenient for the user to operate. When the user needs to adjust the height of the armrest, he only needs to extend his fingers under the armrest pad 2100 to easily touch and rotate the rotating part 2331, and then push the transmission member 2350 through the pressing part 2332 to achieve the height adjustment of the armrest.

[0036] Reference Figure 4 and Figure 5 According to the armrest device provided by the embodiment of the first aspect of the present invention, a lifting channel 2312 is provided in the lifting seat 2310, and the lifting channel 2312 is connected to the clamping groove 2321. The sliding rod 1100 is penetrated in the lifting channel 2312 and the clamping groove 2321 connected thereto, thereby realizing a stable connection of the sliding rod 1100 between the lifting seat 2310 and the clamping member 2320.

[0037] The design of the lifting channel 2312 not only provides enough space for the slide bar 1100 to move up and down, but also ensures the stability and accuracy of the slide bar 1100 during the movement. Since the lifting channel 2312 is connected to the clamping groove 2321, when the clamping member 2320 tilts or moves under the action of the elastic support member 2340, the slide bar 1100 can smoothly move along the guidance of the lifting channel 2312 and the clamping groove 2321 without any obstruction.

[0038] Reference Figures 4 to 7 According to the handrail device provided by the embodiment of the first aspect of the present invention, a guide groove 1110 arranged from top to bottom is provided in the middle of the slide bar 1100, and the guide groove 1110 provides a space for the guide rod 2313 on the lifting seat 2310 to pass through. The guide rod 2313 is fixed on the lifting seat 2310 and is located in the lifting channel 2312. Its size and shape match the guide groove 1110, so that the guide rod 2313 can be tightly passed through the guide groove 1110.

[0039] When the armrest device is raised or lowered, the slide bar 1100 moves up and down along the lifting channel 2312 and the clamping groove 2321. During this process, the guide rod 2313 is always inserted into the guide groove 1110, providing stable guidance and support for the slide bar 1100. The matching design of the guide groove 1110 and the guide rod 2313 not only ensures the linear movement of the slide seat during the lifting process, but also prevents the slide bar 1100 from being deflected or shaken due to external forces.

[0040] Reference Figure 7According to the armrest device provided by the embodiment of the first aspect of the present invention, a plurality of crimping ribs 2210 are arranged on the inner circumferential wall of the lifting sleeve 2200. The plurality of crimping ribs 2210 are distributed along the inner wall of the lifting sleeve 2200, and the end faces thereof can be tightly abutted against the outer wall of the lifting seat 2310. When the lifting sleeve 2200 and the lifting seat 2310 are assembled together, the crimping ribs 2210 will be firmly pressed against the outer wall of the lifting seat 2310 to form a stable connection structure. The design of the crimping ribs 2210 not only enhances the connection strength between the lifting sleeve 2200 and the lifting seat 2310, but also improves the overall stability of the armrest device. During the use of the armrest, the user may apply forces of various directions and magnitudes, and the presence of the crimping ribs 2210 can effectively resist these external forces and prevent the lifting sleeve 2200 and the lifting seat 2310 from loosening or separation.

[0041] In addition, the design of the crimping rib 2210 also takes into account the convenience of disassembly and assembly of the armrest device. Since the crimping rib 2210 is abutted against the outer wall of the lifting seat 2310 through the end face, when the armrest device needs to be disassembled, it is only necessary to overcome the friction between the crimping rib 2210 and the lifting seat 2310, and the lifting sleeve 2200 can be easily removed from the lifting seat 2310 without using additional tools or performing complicated operations.

[0042] Reference Figures 3 to 5 According to the armrest device provided by the embodiment of the first aspect of the present invention, a receiving groove 2314 is provided in the lifting seat 2310, and the receiving groove 2314 is communicated with the installation cavity for installing the clamping member 2320. The elastic support member 2340 is a spring, and the receiving groove 2314 is used to install and accommodate the spring, which can not only ensure the stability of the spring installation, but also improve the compactness of the structure of the lifting seat 2310. The spring serves as the elastic support member 2340, and its lower end is fixed to the bottom of the receiving groove 2314, and its upper end extends upward and abuts against the lower end of the clamping member 2320. When the clamping member 2320 is subjected to a downward force, the spring will be elastically deformed, causing the clamping member 2320 to descend.

[0043] Reference Figures 3 to 5 It can be understood that the installation cavity has a downward opening, so as to facilitate the installation of the spring from bottom to top. The lower end of the lifting seat 2310 is connected to the limiting block through a fastener. The limiting block limits the spring in the accommodating groove 2314 and allows the upper end of the spring to extend into the installation cavity of the mounting clip 2320.

[0044] The seat provided in the embodiment according to the second aspect of the present invention has all the beneficial effects of the embodiment according to the first aspect of the present invention.

[0045] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An armrest device, characterized in that: include: A connecting arm, the upper end of which is provided with a sliding rod extending upward; The support assembly comprises an armrest pad, a lifting sleeve and a lifting control mechanism, wherein the armrest pad is arranged at the upper end of the lifting sleeve, the lifting structure is connected to the lifting sleeve, the lifting sleeve is arranged on the connecting arm, the lifting control mechanism comprises a lifting seat, a clamping member, a lifting control member and an elastic support member, an installation cavity is arranged inside the lifting seat, the clamping member is arranged on the lifting seat and both ends can move up and down in the installation cavity, the clamping member is provided with a clamping groove running through the upper and lower parts, the lifting seat is connected to the lifting sleeve and can move up and down relative to the sliding rod, the sliding rod is penetrated by the clamping groove, the elastic support member is arranged on the lifting seat and is located on one side of the clamping member, the upper end of the elastic support member abuts against the clamping member so that the clamping member forms an angle with the horizontal direction, so that the inner wall of the clamping groove abuts against the outer wall of the sliding rod, the lifting control member is connected to the lifting sleeve, and the lifting control member is configured to be able to press down the clamping member so that the clamping member is parallel to the horizontal direction, and the inner wall of the clamping groove is separated from the outer wall of the sliding rod.

2. The handrail device according to claim 1, characterized in that: The lifting control mechanism also includes a transmission member, which is arranged on the lifting seat and can slide up and down. The lower end of the transmission member abuts against the upper side of the clamping member close to one end of the elastic support member, and the upper end is located at the lower side of the lifting control member. The lifting control member can push the transmission member downward, and the transmission member can press down the clamping member when it moves downward.

3. The handrail device according to claim 2, characterized in that: The lifting seat is provided with a slide groove penetrating from top to bottom, and the transmission member is inserted in the slide groove and can slide up and down.

4. The handrail device according to claim 2, characterized in that: The lifting control member includes a rotating part and a pressing part. A crimping plate is arranged on the top of the transmission member. The lifting control member is rotatably connected to the lifting sleeve. The rotating part extends forward to the front side of the lifting sleeve. The pressing part extends backward and abuts against the upper end of the crimping plate. The rotating part can rotate upward so that the pressing part pushes the transmission member downward.

5. The handrail device according to claim 4, characterized in that: The rotating portion is located at the lower side of the armrest pad.

6. The handrail device according to claim 1, characterized in that: A lifting channel is arranged in the lifting seat, the lifting channel is communicated with the clamping groove, and the sliding rod is passed through the clamping groove and the lifting channel.

7. The handrail device according to claim 6, characterized in that: A guide groove arranged from top to bottom is provided in the middle of the slide rod, and the lifting seat is connected with a guide rod, which is located in the lifting channel and penetrates the guide groove.

8. The handrail device according to claim 1, characterized in that: The inner peripheral wall of the lifting sleeve is provided with a plurality of crimping ribs, and the end surfaces of the plurality of crimping ribs abut against the outer wall of the lifting seat.

9. The handrail device according to claim 1, characterized in that: The lifting seat is provided with a receiving groove, the elastic supporting member is a spring, the lower end of the spring is arranged in the receiving groove, and the upper end abuts against the lower end of the clamping member.

10. A seat, characterized in that: The invention comprises an armrest device as claimed in any one of claims 1 to 9.

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