Armrest device and seat

Abstract

The utility model discloses an armrest device and a seat, the armrest device comprises a connecting arm, a rotating assembly and a supporting assembly, the upper end of the connecting arm is provided with a rotating column; the rotating assembly comprises a rotating seat and a rotating adjusting mechanism, the rotating seat is rotationally connected to the rotating column, a circular mounting cavity is formed in the rotating seat, a plurality of arc-shaped rotating gear grooves are formed in the circumferential direction of the mounting cavity at intervals, the rotating adjusting mechanism is arranged in the mounting cavity, and the rotating adjusting mechanism comprises an adjusting seat, a first elastic part and a rotating gear part; the adjusting base is connected to the rotating column, the rotating gear piece is arranged on the adjusting base and can slide towards or away from the rotating gear groove, and the first elastic piece is arranged between the adjusting base and the rotating gear piece and used for pushing the rotating gear piece so that the end of the rotating gear piece can be clamped into the rotating gear groove; the supporting assembly comprises an armrest pad which is arranged on the upper side of the rotating seat. According to the armrest device, the omnibearing rotation function of the armrest is achieved, and the use flexibility of the armrest is improved.

Description

Technical Field

[0001] This utility model relates to the field of seating technology, and in particular to an armrest device and a seat. Background Technology

[0002] In existing seat designs, the armrests mounted on both sides of the seat cushion can typically only rotate at a predetermined angle. This design limits the flexibility and adaptability of the armrests. Since users have different heights, body types, and usage habits, their needs for the angle and position of the armrests also vary. However, the fixed rotation range of traditional armrests often cannot meet the needs of all users, causing some users to experience discomfort or inconvenience when using the chair. 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 device that realizes the all-round, multi-position rotation function of the handrail, greatly improving the flexibility and adaptability of the handrail.

[0004] Secondly, this utility model also proposes a seat that uses the above-mentioned armrest device.

[0005] The handrail device provided according to the first aspect of the present invention includes:

[0006] The connecting arm has a rotating column at its upper end;

[0007] A rotating assembly includes a rotating seat and a rotating adjustment mechanism. The rotating seat is rotatably connected to the rotating column. The rotating seat has a circular mounting cavity inside, and the mounting cavity has multiple arc-shaped rotating stop grooves spaced circumferentially. The rotating adjustment mechanism is located in the mounting cavity and includes an adjustment seat, a first elastic element, and a rotating stop element. The adjustment seat is connected to the rotating column, and the rotating stop element is located on the adjustment seat and can slide toward or away from the rotating stop grooves. The first elastic element is located between the adjustment seat and the rotating stop element and is used to push the rotating stop element so that the end of the rotating stop element is engaged in the rotating stop groove.

[0008] The support assembly includes an armrest pad, which is disposed on the upper side of the rotating seat.

[0009] The handrail device has the following beneficial effects: the rotating seat and the rotating column in the rotating assembly are connected in rotation, so that the handrail pad can rotate relative to the connecting arm; the rotating adjusting mechanism comprises two first elastic members and two rotating gear members, the two first elastic members are arranged on opposite sides of the adjusting seat, and the two first elastic members can respectively push the two rotating gear members, so that the end portions of the two rotating gear members are clamped into the rotating gear slots.

[0010] The handrail device has the following beneficial effects: the rotating seat and the rotating column in the rotating assembly are connected in rotation, so that the handrail pad can rotate relative to the connecting arm; the rotating adjusting mechanism comprises two first elastic members and two rotating gear members, the two first elastic members are arranged on opposite sides of the adjusting seat, and the two first elastic members can respectively push the two rotating gear members, so that the end portions of the two rotating gear members are clamped into the rotating gear slots.

[0011] The handrail device has the following beneficial effects: the rotating seat and the rotating column in the rotating assembly are connected in rotation, so that the handrail pad can rotate relative to the connecting arm; the rotating adjusting mechanism comprises two first elastic members and two rotating gear members, the two first elastic members are arranged on opposite sides of the adjusting seat, and the two first elastic members can respectively push the two rotating gear members, so that the end portions of the two rotating gear members are clamped into the rotating gear slots.

[0012] The handrail device has the following beneficial effects: the rotating seat and the rotating column in the rotating assembly are connected in rotation, so that the handrail pad can rotate relative to the connecting arm; the rotating adjusting mechanism comprises two first elastic members and two rotating gear members, the two first elastic members are arranged on opposite sides of the adjusting seat, and the two first elastic members can respectively push the two rotating gear members, so that the end portions of the two rotating gear members are clamped into the rotating gear slots.

[0013] According to the handrail device provided by the first aspect of the utility model, the upper side of the front and rear sliding seat is provided with a second containing cavity, the front and rear two side walls of the second containing cavity are provided with a plurality of left and right sliding gear grooves, the supporting assembly further comprises a left and right sliding mechanism, the left and right sliding mechanism comprises a left and right sliding seat, a third elastic piece and a left and right sliding gear piece, the left and right sliding seat is arranged in the second containing cavity and can slide left and right, the left and right sliding gear piece is arranged on the left and right sliding seat and can slide towards or away from the left and right sliding gear groove, the third elastic piece is arranged between the left and right sliding seat and the left and right sliding gear piece and is used for pushing the left and right sliding gear piece so that the end of the left and right sliding gear piece is clamped into the rotating gear groove.

[0014] According to the handrail device provided by the first aspect of the utility model, the left and right sliding mechanism comprises two third elastic pieces and two left and right sliding gear pieces, the two third elastic pieces and the two left and right sliding gear pieces are arranged on the front and rear two sides of the left and right sliding seat, the two third elastic pieces can respectively push the two left and right sliding gear pieces so that the ends of the two left and right sliding gear pieces are clamped into the left and right sliding gear groove.

[0015] According to the handrail device provided by the first aspect of the utility model, the connecting arm is a liftable connecting arm.

[0016] According to the handrail device provided by the first aspect of the utility model, the rotating column and the connecting arm are an integral forming structure.

[0017] According to the handrail device provided by the first aspect of the utility model, the sliding column and the rotating seat are an integral forming structure.

[0018] According to the seat provided by the second aspect of the utility model, the seat has all the beneficial effects of the first aspect of the utility model.

[0019] Additional aspects and advantages of the utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained in combination with the drawings and embodiments, wherein:

[0021] Figure 1 The overall schematic view of the handrail device provided by the embodiment of the utility model is shown in the figure;

[0022] Figure 2 The cross-sectional view of the handrail device provided by the embodiment of the utility model is shown in the figure;

[0023] Figure 3The decomposition schematic view of the handrail device is provided for the embodiment of the utility model.

[0024] Figure 4 The decomposition schematic view of the connecting arm and the rotating assembly is provided for the embodiment of the utility model.

[0025] Figure 5 The decomposition schematic view of the supporting assembly is provided for the embodiment of the utility model.

[0026] Figure 6 The decomposition schematic view of the front and rear sliding mechanism and the left and right sliding mechanism is provided for the embodiment of the utility model.

[0027] The reference signs are as follows:

[0028] Connecting arm 1000, rotating column 1100;

[0029] Rotating assembly 2000, rotating seat 2100, installation cavity 2110, rotating gear slot 2120, sliding column 2130, rotating adjusting mechanism 2200, adjusting seat 2210, first elastic piece 2220, rotating gear piece 2230;

[0030] Supporting assembly 3000, handrail pad 3100, handrail seat 3200, first containing cavity 3210, sliding groove 3220, front and rear sliding gear slot 3230, handrail shell 3300, front and rear sliding mechanism 3400, front and rear sliding seat 3410, second containing cavity 3411, left and right sliding gear slot 3412, front and rear sliding gear piece 3420, second elastic piece 3430, left and right sliding mechanism 3500, left and right sliding seat 3510, third elastic piece 3520, left and right sliding gear piece 3530. DETAILED DESCRIPTION

[0031] The embodiments of the utility model are described in detail below, and the examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as the limitation of the utility model.

[0032] In the description of the utility model, it should be understood that the orientation description, such as the orientation or position relationship of up, down, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as the limitation of the utility model.

[0033] In the description of the utility model, if it is described to first, second only is used for distinguishing technical feature for purpose, and can not be understood as indicating or suggesting relative importance or implicitly indicating the quantity of indicated technical feature or implicitly indicating the sequence of indicated technical feature.

[0034] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection should be understood broadly, and the specific meaning of the above words in the utility model can be determined by the person skilled in the art in combination with the specific content of technical scheme.

[0035] The embodiment of the utility model provides a handrail device, which is applied to a seat, and the specific structure and functions of the handrail device provided by the embodiment of the utility model will be further explained in combination with the description and drawings.

[0036] Refer to Figures 1 to 4 According to the handrail device provided by the first aspect embodiment of the utility model, the upper end of the connecting arm 1000 is provided with a rotating column 1100, which is used for being connected with the rotating assembly 2000.The rotating assembly 2000 includes a rotating base 2100 and a rotating adjusting mechanism 2200.The rotating base 2100 is rotatably connected to the rotating column 1100, so that the handrail device can rotate relative to the connecting arm 1000.The inside of the rotating base 2100 is provided with a circular mounting cavity 2110, and a plurality of arc-shaped rotating gear slots 2120 are arranged at the circumference of the mounting cavity 2110.The plurality of rotating gear slots 2120 are used for cooperating with the rotating adjusting mechanism 2200 to realize the gear rotation of the handrail.The rotating adjusting mechanism 2200 is arranged in the mounting cavity 2110, and it includes an adjusting base 2210, a first elastic member 2220 and a rotating gear member 2230.The adjusting base 2210 is connected to the rotating column 1100 and rotates together with the rotating base 2100.The rotating gear member 2230 is arranged on the adjusting base 2210 and can slide towards or away from the rotating gear slot 2120.The first elastic member 2220 is arranged between the adjusting base 2210 and the rotating gear member 2230 and is used for pushing the rotating gear member 2230 so that the end of the rotating gear member 2230 is clamped into the rotating gear slot 2120.When the angle of the handrail needs to be adjusted, the user only needs to exert a certain force to make the rotating gear member 2230 overcome the pushing force of the first elastic member 2220, slide out of the current rotating gear slot 2120, then rotate the handrail to the required angle, and then release the force, the rotating gear member 2230 is clamped into the corresponding rotating gear slot 2120 again under the action of the first elastic member 2220, thereby realizing the gear fixing of the handrail.The supporting assembly 3000 includes a handrail pad 3100, which is arranged on the upper side of the rotating base 2100 to provide comfortable handrail experience for the user.The material and shape of the handrail pad 3100 can be selected and designed according to actual requirements to meet the use habits of different users.

[0037] According to the handrail device provided by the first aspect of the utility model, the rotating seat 2100 in the rotating assembly 2000 is rotatably connected with the rotating column 1100, so that the handrail pad 3100 can rotate relative to the connecting arm 1000. The multiple arc-shaped rotating gear grooves 2120 provided in the rotating seat 2100 and the cooperation of the rotating gear piece 2230 and the first elastic piece 2220 in the rotating adjusting mechanism 2200 make the end of the rotating gear piece 2230 be able to be clamped into different rotating gear grooves 2120, so that the stable positioning of the handrail pad 3100 at multiple predetermined angles is realized. This greatly improves the use flexibility and adaptability of the handrail, can meet the needs of users of different heights, body shapes and use habits for the angle and position of the handrail, and improves the comfort and convenience of the seat.

[0038] With reference to Figures 2 to 4 , according to the handrail device provided by the first aspect of the utility model, the rotating adjusting mechanism 2200 includes two first elastic pieces 2220 and two rotating gear pieces 2230. The two first elastic pieces 2220 are respectively arranged on the opposite sides of the adjusting seat 2210 (the front and back sides) Figure 2 , which makes the rotating adjusting mechanism 2200 be able to be more balanced when being stressed, so as to improve the rotation stability and the reliability of gear fixing of the handrail. The two first elastic pieces 2220 are respectively connected between the adjusting seat 2210 and the two rotating gear pieces 2230, for pushing the rotating gear piece 2230, so that the end of the rotating gear piece 2230 can be clamped into the rotating gear groove 2120 in the rotating seat 2100. When the user needs to adjust the angle of the handrail pad 3100, only needs to exert a certain rotating force on the handrail pad 3100, and the force will be transmitted to the rotating gear piece 2230, so that the rotating gear piece 2230 slides out of the current rotating gear groove 2120 by overcoming the pushing force of the first elastic piece 2220. Subsequently, the user can rotate the handrail to the required angle, and then release the force. At this time, the two first elastic pieces 2220 will respectively push the two rotating gear pieces 2230, so that the ends of the two rotating gear pieces 2230 are clamped into the corresponding rotating gear grooves 2120 again, so as to realize the gear fixing of the handrail.

[0039] It can be understood that the design of the double rotating gear pieces 2230 not only improves the stability and reliability of the handrail device, but also makes the rotation and gear fixing of the handrail more smooth and flexible. At the same time, this design also enhances the durability of the handrail device, so that it can maintain a good use state for a longer time.

[0040] With reference to Figures 2 to 6According to the handrail device provided by the first aspect of the utility model, the upper side of the rotating seat 2100 is provided with a sliding column 2130, the supporting assembly 3000 comprises a handrail seat 3200, a handrail shell 3300 and a handrail pad 3100. The handrail seat 3200 is connected to the sliding column 2130 and can slide forward and backward relative to the handrail seat 3200. This enables the user to adjust the position of the handrail seat 3200 according to the body shape and use habit of the user, thereby achieving the best supporting effect. The handrail pad 3100 is arranged on the upper side of the handrail shell 3300 and provides a comfortable touch for the user. The handrail shell 3300 is connected to the handrail seat 3200 and is located on the upper side of the handrail seat 3200. Such a structural design not only makes the handrail device more beautiful in appearance, but also enhances the overall stability and durability of the handrail device.

[0041] When the user needs to use the handrail, the position of the handrail pad 3100 can be adjusted by sliding or rotating the handrail seat 3200 according to the needs of the user. After the adjustment is completed, the handrail pad 3100 and the handrail shell 3300 provide stable support for the user, so that the user feels more comfortable during use. This not only improves the flexibility and adaptability of the handrail device, but also greatly improves the user experience.

[0042] Referring to Figure 5 and Figure 6 , according to the handrail device provided by the first aspect of the utility model, the inside of the handrail seat 3200 is provided with a first accommodating cavity 3210 arranged in the front-rear direction, and the first accommodating cavity 3210 provides a mounting space for the front-rear sliding mechanism 3400. The bottom wall of the first accommodating cavity 3210 is provided with a sliding groove 3220 arranged in the front-rear direction, and the sliding groove 3220 is used for guiding the front-rear sliding of the sliding column 2130. Meanwhile, the left and right sides of the first accommodating cavity 3210 are provided with a plurality of front-rear sliding gear slots 3230 arranged in the front-rear direction, and the plurality of front-rear sliding gear slots 3230 provide a plurality of fixed gear positions for the front-rear sliding seat 3410. The sliding column 2130 passes through the sliding groove 3220 and extends into the first accommodating cavity 3210 and is connected to the front-rear sliding seat 3410. The front-rear sliding seat 3410 is located in the first accommodating cavity 3210 and can move with the front-rear sliding of the sliding column 2130.

[0043] In order to realize stable switching of the front and rear sliding seat 3410 between multiple gear positions, the support assembly 3000 further comprises a front and rear sliding mechanism 3400. The sliding mechanism comprises the front and rear sliding seat 3410, two front and rear sliding gear pieces 3420, and a second elastic piece 3430. The two front and rear sliding gear pieces 3420 are arranged on the left and right sides of the front and rear sliding seat 3410 and can slide towards or away from the front and rear sliding gear slot 3230. The second elastic piece 3430 is arranged on the front and rear sliding seat 3410 and abuts against the two front and rear sliding gear pieces 3420 at both ends. The function of this elastic piece is to push the two front and rear sliding gear pieces 3420 so that the ends thereof can be clamped into the front and rear sliding gear slot 3230, thereby realizing gear fixing of the front and rear sliding seat 3410.

[0044] When the user needs to adjust the front and rear positions of the armrest seat 3200, only needs to exert a certain force on the armrest seat 3200, so that the front and rear sliding gear piece 3420 overcomes the pushing force of the second elastic piece 3430 and slides out of the current front and rear sliding gear slot 3230. Subsequently, the user can slide the armrest seat 3200 to the desired position in the front and rear direction, and then release the force. At this time, the second elastic piece 3430 pushes the two front and rear sliding gear pieces 3420 so that the ends thereof are clamped into the corresponding front and rear sliding gear slot 3230 again, thereby realizing gear fixing of the armrest seat 3200.

[0045] With reference to Figure 5 and Figure 6 , according to the armrest device provided by the first aspect of the utility model, the upper side of the front and rear sliding seat 3410 is provided with a second accommodating cavity 3411, which provides space for installation and operation of the left and right sliding mechanism 3500, so that the armrest seat 3200 can not only slide in the front and rear direction, but also can be finely adjusted in the left and right direction. The front and rear two side walls of the second accommodating cavity 3411 are provided with a plurality of left and right sliding gear slots 3412, which are arranged in the left and right direction and provide a plurality of fixed gear positions for the left and right sliding seat 3510. The support assembly 3000 further comprises a left and right sliding mechanism 3500, which comprises the left and right sliding seat 3510, a third elastic piece 3520, and a left and right sliding gear piece 3530. The left and right sliding seat 3510 is arranged in the second accommodating cavity 3411 and can slide left and right, which enables the user to adjust the left and right positions of the armrest seat 3200 according to actual needs. The left and right sliding gear piece 3530 is arranged on the left and right sliding seat 3510 and can slide towards or away from the left and right sliding gear slot 3412. The third elastic piece 3520 is arranged between the left and right sliding seat 3510 and the left and right sliding gear piece 3530, and its function is to push the left and right sliding gear piece 3530 so that the end thereof can be clamped into the left and right sliding gear slot 3412, thereby realizing gear fixing of the left and right sliding seat 3510.

[0046] When the user needs to adjust the left-right position of the armrest seat 3200, only need to exert a certain lateral force on the armrest seat 3200, the force will be transmitted to the left-right sliding gear 3530, so that the left-right sliding gear 3530 overcomes the pushing force of the third elastic member 3520 and slides out of the current left-right sliding gear slot 3412. Subsequently, the user can slide the armrest seat 3200 left and right to the desired position, and then release the force. At this time, the two third elastic members 3520 will respectively push the two left-right sliding gears 3530, so that the ends of the two left-right sliding gears 3530 are re-clamped into the corresponding left-right sliding gear slots 3412, thereby achieving the gear fixing of the armrest seat 3200.

[0047] With reference to Figure 5 and Figure 6 , according to the armrest device provided by the first aspect of the utility model, the left-right sliding mechanism 3500 includes two third elastic members 3520 and two left-right sliding gears 3530, and the two third elastic members 3520 and the two left-right sliding gears 3530 are arranged on the front and back sides of the left-right sliding seat 3510. The two third elastic members 3520 are respectively connected between the left-right sliding seat 3510 and the two left-right sliding gears 3530, and are used for pushing the left-right sliding gears 3530, so that the ends of the left-right sliding gears 3530 can be clamped into the left-right sliding gear slots 3412 on the front and back sides of the second accommodating cavity 3411.

[0048] When the user needs to adjust the left-right position of the armrest seat 3200, only need to exert a certain lateral force on the armrest seat 3200, the force will be transmitted to the left-right sliding gear 3530, so that the left-right sliding gear 3530 overcomes the pushing force of the third elastic member 3520 and slides out of the current left-right sliding gear slot 3412. Subsequently, the user can slide the armrest seat 3200 left and right to the desired position, and then release the force. At this time, the two third elastic members 3520 will respectively push the two left-right sliding gears 3530, so that the ends of the two left-right sliding gears 3530 are re-clamped into the corresponding left-right sliding gear slots 3412, thereby achieving the gear fixing of the armrest seat 3200.

[0049] It can be understood that the design of the double left-right sliding gears 3530 not only improves the stability and reliability of the armrest device in the left-right direction, but also makes the left-right sliding and gear fixing of the armrest seat 3200 more smooth and flexible. At the same time, this design also enhances the durability of the armrest device, so that it can maintain a good use state for a longer time, and meet the diversified use requirements of the user.

[0050] With reference to Figures 1 to 3 , according to the armrest device provided by the first aspect of the utility model, the connecting arm 1000 is a liftable connecting arm, which makes the user can flexibly adjust the height of the armrest according to the height of the user, the sitting posture habit and the requirement of the use scene, so as to achieve the best supporting and use effect.

[0051] It can be understood that the specific implementation of the liftable connecting arm can be realized by various structures, for example, a telescopic rod, a sleeve type lifting structure or a gear transmission lifting mechanism, etc. In these structures, the components of the connecting arm 1000 can slide or rotate relative to each other to realize the adjustment of the height.

[0052] When the user needs to adjust the height of the armrest, the user only needs to operate the lifting adjusting device on the connecting arm 1000, such as rotating the adjusting knob, pulling the lifting rod or pressing the release button, etc. to easily change the length of the connecting arm 1000, thereby adjusting the height of the armrest. After the adjustment is completed, the connecting arm 1000 can be stably maintained at the required height position to provide comfortable support for the user.

[0053] With reference to Figure 2 and Figure 3 , according to the armrest device provided by the first aspect of the present application, the rotating column 1100 and the connecting arm 1000 are integrally formed, which can be realized by casting, injection molding or forging process, etc. to ensure that the connection between the rotating column 1100 and the connecting arm 1000 is seamless and firm. In addition, since the rotating column 1100 and the connecting arm 1000 are integrally formed, the relative position between the rotating column 1100 and the connecting arm 1000 is fixed, and there is no looseness or shaking, thereby ensuring the stability and reliability of the armrest device during use. At the same time, the integrally formed structure also simplifies the assembly process of the armrest device, reduces the number of parts, and improves the production efficiency.

[0054] With reference to Figure 2 and Figure 3 , according to the armrest device provided by the first aspect of the present application, the sliding column 2130 and the rotating seat 2100 are integrally formed, which is conducive to improving the reliability of the connection between the sliding column 2130 and the rotating seat 2100.

[0055] It can be understood that since the sliding column 2130 and the rotating seat 2100 are integrally formed, the relative position between the sliding column 2130 and the rotating seat 2100 is fixed and stable, which ensures the smoothness and accuracy of the armrest seat 3200 during the forward and backward sliding process. At the same time, the integrally formed structure also simplifies the manufacturing and assembly process of the armrest device, reduces the number of parts and assembly processes, and improves the production efficiency.

[0056] According to the seat provided by the second aspect of the present application, the seat has all the beneficial effects of the first aspect of the present application.

[0057] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. A handrail device, characterized in that The utility model relates to a rotating armrest with adjustable height and angle, comprising: a connecting arm with a rotating column at the upper end; a rotating assembly comprising a rotating base and a rotating adjusting mechanism, the rotating base is rotatably connected to the rotating column, the rotating base has a circular mounting cavity inside, a plurality of arc-shaped rotating gear slots are arranged at intervals around the mounting cavity, the rotating adjusting mechanism is arranged in the mounting cavity, the rotating adjusting mechanism comprises an adjusting base, a first elastic member and a rotating gear, the adjusting base is connected to the rotating column, the rotating gear is arranged in the adjusting base and can slide towards or away from the rotating gear slot, the first elastic member is arranged between the adjusting base and the rotating gear and is used to push the rotating gear so that the end of the rotating gear is clamped into the rotating gear slot; a support assembly comprising an armrest pad arranged on the upper side of the rotating base.

2. The handrail apparatus of claim 1, wherein The rotating adjusting mechanism comprises two first elastic members and two rotating gears, the two first elastic members are respectively arranged on the opposite sides of the adjusting base, and the two first elastic members can respectively push the two rotating gears so that the ends of the two rotating gears are clamped into the rotating gear slot.

3. The handrail assembly of claim 1, wherein The upper side of the rotating base is provided with a sliding column, and the support assembly further comprises an armrest base and an armrest shell, the armrest base is connected to the sliding column and can slide forward and backward relative to the armrest base, the armrest pad is arranged on the upper side of the armrest shell, and the armrest shell is connected to the armrest base and located on the upper side of the armrest base.

4. A handrail arrangement according to claim 3, characterised in that The inside of the armrest base is provided with a first containing cavity arranged in the front-rear direction, the bottom wall of the first containing cavity is provided with a sliding groove arranged in the front-rear direction, and the left and right sides are provided with a plurality of front-rear sliding gear slots, the sliding column passes through the sliding groove and extends into the first containing cavity, a plurality of front-rear sliding gear slots are arranged in the front-rear direction, the support assembly further comprises a front-rear sliding mechanism, the sliding mechanism comprises a front-rear sliding base, two front-rear sliding gears and a second elastic member, the front-rear sliding base is connected to the sliding column and located in the first containing cavity, the two front-rear sliding gears are arranged on the left and right sides of the front-rear sliding base and can slide towards or away from the front-rear sliding gear slot, and the second elastic member is arranged on the front-rear sliding base and abuts against the two front-rear sliding gears at both ends, the second elastic member is used to push the two front-rear sliding gears so that the ends of the front-rear sliding gears are clamped into the front-rear sliding gear slot.

5. A handrail arrangement according to claim 4, characterised in that The upper side of the front-rear sliding base is provided with a second containing cavity, the front and rear walls of the second containing cavity are provided with a plurality of left and right sliding gear slots, and the support assembly further comprises a left and right sliding mechanism, the left and right sliding mechanism comprises a left and right sliding base, a third elastic member and a left and right sliding gear, the left and right sliding base is arranged in the second containing cavity and can slide left and right, the left and right sliding gear is arranged on the left and right sliding base and can slide towards or away from the left and right sliding gear slot, and the third elastic member is arranged between the left and right sliding base and the left and right sliding gear and is used to push the left and right sliding gear so that the end of the left and right sliding gear is clamped into the rotating gear slot.

6. The handrail assembly of claim 5, wherein The left and right sliding mechanism comprises two third elastic members and two left and right sliding gear members, the two third elastic members and the two left and right sliding gear members are arranged on the front and back sides of the left and right sliding seat, and the two third elastic members can respectively push the two left and right sliding gear members to make the end portions of the two left and right sliding gear members clamped into the left and right sliding gear grooves.

7. The handrail assembly of claim 1, wherein The connecting arm is a liftable connecting arm.

8. The handrail apparatus of claim 1, wherein The rotating column and the connecting arm are in an integral forming structure.

9. The handrail assembly of claim 3, wherein The sliding column and the rotating seat are in an integral forming structure.

10. A seat, characterized by A handrail device as claimed in any one of claims 1 to 9.

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