CN219782052U - Armrest and seat - Google Patents

Abstract

The utility model discloses an armrest and a seat, comprising a support main body and a panel assembly; the panel assembly includes a handrail panel and a rotary connector connected between the handrail panel and the support body; a rotating mechanism is arranged between the rotating connecting piece and the supporting main body; the rotating mechanism comprises a shaft connection part arranged on the rotating connecting piece and a rotating matching part arranged at the upper end of the armrest main body; the bottom end of the shaft joint part is provided with a first rotary inclined plane, and the upper end surface of the rotating fit part is correspondingly provided with a second rotary inclined plane; and the second rotary inclined plane is inclined upwards and forwards from back to front; the armrest panel is provided with a horizontal supporting position, the armrest supporting surface at the top end of the armrest panel tends to be horizontal, and the first rotary inclined surface is matched with the second rotary inclined surface at the horizontal supporting position; when the armrest panel rotates from the horizontal supporting position relative to the supporting main body, the first rotating inclined plane and the second rotating inclined plane are guided in a rotating way, so that the angle of the armrest supporting surface at the top end of the armrest panel is changed at the same time.

Description

Armrest and seat

Technical Field

The utility model relates to the field of seats, in particular to an armrest and a seat.

Background

Seats are an indispensable tool for people's life, study and work. People may sit on the seat for a long time to perform various matters, so the comfort of the seat is very important. Armrests play an important role as an integral part of the seat to provide comfort; the armrests of the traditional seat are of a fixed structure, have no adjusting function and can not be lifted, so that the traditional seat can not adapt to people with different body heights; and can not rotate, so that the hand placing habit of different people can not be adapted, and the comfort requirement of people can not be met. In order to enrich the functions of handrails, the conventional seats are correspondingly provided with handrails which can rotate, lift and move, so that the seat is convenient for a user to adjust; however, the rotation and the movement of the armrests are horizontally rotated and horizontally moved in the horizontal plane; the backrest of most of the existing seats can be adjusted in a tilting manner relative to the seat part, so that the user can use the seat more comfortably, and the user can conveniently use the seat daily or lie down for rest; however, the backrest and the armrests are two separate components, and the armrests are generally arranged at two sides of the seat part; when a user uses the chair in a normal sitting posture, the back leans against the backrest, the two hands can be just placed on the armrests, and the back and the elbows can be properly supported; however, when the user leans back, the backrest rotates backward, and the armrests can only be adjusted in the horizontal plane, so that when the user adjusts the elevation angle of the seat, the armrests of the seat cannot be adjusted in a synchronous angle with the backrest of the seat, and the comfort level is greatly reduced.

In addition, for some users who frequently read or play hands on a seat, the users like to sit on the seat for a long time to play a game, and the users need to lean both hands at all times to play the game in front of the chest; the existing armrests can not effectively support the user's elbows, so that the elbows can only be in a suspended state; the patients feel ache and tired easily for a long time.

In view of the above, there is a need for a chair armrest that provides effective support for the user's arms and elbows for different hands-free habits and different use conditions.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art, and provides the armrest and the seat, when the armrest panel rotates from the horizontal supporting position to the supporting main body, the angle of the armrest supporting surface formed at the top end of the armrest panel is changed under the rotary guiding action between the first rotary inclined surface and the second rotary inclined surface, so that the armrest can provide armrest supporting requirements of users in different using states.

The technical scheme of the utility model is realized as follows:

an armrest, comprising: a support body; the armrest support body being longitudinally disposed and configured to be coupled to a side end of the seat portion; a panel assembly configured to support a human elbow; the panel assembly includes a handrail panel and a rotary connector connected between the handrail panel and the support body; a rotating mechanism is arranged between the rotating connecting piece and the supporting main body so that the handrail panel can be linked with the rotating connecting piece to carry out circumferential rotation adjustment relative to the supporting main body; the rotating mechanism comprises a shaft connection part arranged on the rotating connecting piece and a rotating matching part arranged at the upper end of the armrest main body; the shaft connection part is in up-down butt joint with the rotating fit part, a first rotating inclined plane which is inclined relative to the horizontal plane is arranged at the bottom end of the shaft connection part, and the upper end surface of the rotating fit part is correspondingly and obliquely arranged to form a second rotating inclined plane; and the second rotary inclined plane is inclined upwards and forwards from back to front; the armrest panel is provided with a horizontal supporting position, the armrest supporting surface at the top end of the armrest panel tends to be horizontal, and the first rotary inclined surface is matched with the second rotary inclined surface at the horizontal supporting position; when the armrest panel rotates from the horizontal supporting position relative to the supporting main body, the first rotating inclined plane and the second rotating inclined plane are guided in a rotating way, so that the angle of the armrest supporting surface at the top end of the armrest panel is changed at the same time.

Preferably, the first rotating inclined plane and the second rotating inclined plane are elliptical with the same outline; and the long axis of the second rotary inclined plane coincides with the front-back direction. So that the swivel connection will be rotated 180 deg. backwards, the armrest panel will again remain in the front-to-back direction.

Preferably, in the horizontal supporting position, the rotary supporting member is inclined obliquely upward and forward; and the front end of the rotary connecting piece is connected to the bottom end of the handrail panel, and the shaft connection part is arranged at the rear end of the rotary connecting piece. So that when the swivel connection is rotated, the armrest panel will be displaced rather than rotated in place.

Preferably, the rotating mechanism further comprises a rotating shaft which is arranged on the second rotating inclined plane and protrudes upwards, and a shaft hole which is correspondingly arranged at the first rotating inclined plane, and the rotating shaft is rotatably arranged in the shaft hole in a penetrating manner; and the upper end of the shaft connection part is concavely provided with a mounting groove which is vertically communicated with the shaft hole, and an adjusting limiting part which is fixedly connected with the rotating shaft is arranged in the mounting groove. Therefore, the rotary inclined shaft can be avoided and separated from the rotating fit part, and the rotary inclined shaft can rotate stably relative to the rotating fit part.

Preferably, the upper end of the rotating shaft is provided with an upward convex clamping lug which is positioned in the mounting groove; the bottom of the adjusting limiting piece is correspondingly provided with a clamping groove which can be matched with the clamping projection in a clamping way, the adjusting limiting piece is embedded in the mounting groove so that the clamping projection is clamped in the clamping groove, and a longitudinal screw is further connected between the adjusting limiting piece and the rotating shaft. Then the adjusting limiting piece is circumferentially fixed with the rotating shaft, and the adjusting limiting piece and the rotating shaft are connected and fixed by adopting screws.

Preferably, a positioning mechanism is further arranged between the adjusting limiting piece and the shaft connecting part; the adjusting limiting piece is of a cam structure and is provided with a shrinkage end in a shrinkage shape, and the positioning mechanism comprises a plurality of positioning clamping grooves concavely arranged on the bottom wall of the mounting groove and positioning protrusions correspondingly arranged at the bottom end of the shrinkage end of the adjusting limiting piece; the positioning clamping grooves are arranged in the mounting grooves in an arc shape; and the adjusting limiting piece is configured to enable the positioning protrusion to be in extrusion fit with the bottom wall of the mounting groove. The adjusting limiting piece is circumferentially fixed with the supporting main body, then when the rotary connecting piece rotates relative to the supporting main body, the positioning protrusion rotates relative to the track of the positioning clamping groove, and then the adjusting limiting piece can stay at a plurality of rotary positions in the rotary process, and the gear is obvious.

Preferably, in the horizontal supporting position, a backward inclined supporting body which is inclined towards the backward lower direction is arranged at the rear end of the handrail panel. The elbow of the user is conveniently supported, and the design is more comprehensive.

A chair, comprising a chair back component, a chair seat component and armrests; the bottom end of the supporting main body is connected with the side end of the seat assembly; and the chair back component can perform backward rotation relative to the chair seat component.

Preferably, the armrest panel has a reclined use position rotated by 180 ° backward from the horizontal support position relative to the support body, in which the first rotary inclined surface is still engaged with the second rotary inclined surface, and the armrest support surface at the top end of the armrest panel is in a front-high rear-bottom state while the armrest panel is rotated backward. The handrail panel can be used by a user in a backward leaning state conveniently, and proper supporting performance is provided.

Preferably, a sliding adjustment mechanism is provided between the armrest panel and the rotary connector, and the sliding adjustment mechanism is configured to enable the armrest panel to slide along the length direction thereof relative to the rotary connector. So that the user can further adjust the front-to-back position of the armrest panel in the reclined support position.

Preferably, the armrest panel also has a centered diagonal support position that deflects from the horizontal support position toward the center of the seat; the armrest supporting surface of the armrest panel is in an inclined state when the armrest panel is at the central inclined supporting position, and the height of the outer side end of the armrest panel is higher than the height of the inner side end of the armrest panel; so that the handrail supporting surface is an inclined surface with the inner side low and the outer side high at the moment; the user more adapts to the use state that the user puts the double arms on the armrest panel in the middle, and at this moment, the armrest panel can be convenient for the user to read or carry out the hand tour operation on the seat, so the travelling comfort is higher.

The design starting point, the idea and the beneficial effects of the utility model adopting the technical scheme are as follows:

firstly, a rotating mechanism is arranged between a shaft joint part of a rotating connecting piece and a rotating matching part of a supporting main body to realize the rotation adjustment of the handrail panel; the rotating mechanism comprises a first rotating inclined plane and a second rotating inclined plane; the handrail panel is provided with a horizontal supporting position, the handrail supporting surface formed at the top end of the handrail panel tends to be in a horizontal state, the first rotary inclined surface is matched with the second rotary inclined surface, and the handrail can be used as a conventional handrail at the moment; when the armrest panel rotates relative to the support main body from the horizontal support position, under the action of rotary guide between the first rotary inclined plane and the second rotary inclined plane, the angle of the armrest support surface formed at the top end of the armrest panel is changed at the same time, so that the armrest can provide armrest support requirements of users in different use states.

If the armrest panel has a backward use position rotated by 180 degrees from the horizontal support position relative to the support main body, in the backward use state, the first rotating inclined plane is still matched with the second rotating inclined plane after rotating 180 degrees, and the armrest support surface at the upper end of the armrest panel is converted to be in a front high back bottom state while the armrest panel rotates backward; the change of the handrail panel can just meet the position of the arms of the user in the backward leaning state, so that the arms and elbows of the user can be effectively supported in the backward leaning state. A sliding adjusting mechanism is arranged between the handrail panel and the rotary connecting piece and is configured to enable the handrail panel to slide along the length direction of the handrail panel relative to the rotary connecting piece; then under this back support position, can be further adjust handrail panel and carry out the slip of slant along fore-and-aft direction in order more accurate its position of regulation, it is more convenient to use.

Secondly, the armrest panel also has a centered diagonal support position that deflects from the horizontal support position toward the center of the seat; at the moment, the armrest panel can facilitate the user to read or conduct the hand-tour operation on the seat. The arm of the user can be directly put on the armrest panel in the middle, so that the support comfort is high. And the novel handrail panel is different from the conventional rotatable handrail in the middle inclined support position: under the action of the rotary guide of the first rotary inclined plane and the second rotary inclined plane, the armrest supporting surface of the armrest panel is in an inclined state, and the height of the outer side end of the armrest panel is higher than that of the inner side end of the armrest panel; so that the handrail supporting surface is an inclined surface with the inner side low and the outer side high at the moment; the use state that the user supports the double arms on the handrail panel in the middle is more adapted, so the comfort is higher.

Drawings

FIG. 1 is a schematic perspective view of an armrest according to an embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a panel assembly connected to a support body according to an embodiment of the present utility model;

FIG. 3 is a schematic perspective view of the handrail at another angle according to the embodiment of the present utility model;

FIG. 4 is an exploded view of the connection of the panel assembly to the support body in an embodiment of the utility model;

FIG. 5 is a schematic perspective view of an adjusting stop member disposed within a shaft coupling portion according to an embodiment of the present utility model;

FIG. 6 is a schematic perspective view of the armrest panel rotated to a centered support position in accordance with an embodiment of the present utility model;

FIG. 7 is a schematic perspective view of the armrest panel rotated to the reclined support position in accordance with an embodiment of the present utility model;

FIG. 8 is a schematic perspective view of a seat in an embodiment of the utility model;

FIG. 9 is a schematic perspective view of a seat with a armrest body in a reclined support position in accordance with an embodiment of the present utility model;

FIG. 10 is a schematic perspective view of the armrest body in a reclined support position for further fore-aft sliding adjustment in accordance with an embodiment of the present utility model;

FIG. 11 is a schematic perspective view of the seat with the armrest body in a centered support position in accordance with an embodiment of the present utility model;

fig. 12 is a schematic perspective view of the armrest support surface of the armrest body in a centered support position in accordance with an embodiment of the present utility model.

The reference numerals are as follows: a support body 1; a panel assembly 2; a handrail panel 3; a rotary joint 4; a rotation fitting portion 5; a shaft connection part 6; an upper cover 601 is attached; a first rotary ramp 7; a second rotary ramp 8; a rotating shaft 9; a shaft hole 10; a mounting groove 11; a handrail support surface 12; a limit adjusting member 13; a clamping lug 14; a clamping groove 15; a positioning slot 16; a positioning projection 17; a back support 18; seat assembly B.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will be more clearly understood, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, without conflict, the embodiments of the present utility model and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, the term "at least one" refers to one or more, unless explicitly defined otherwise. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The present embodiment relates to reference orientations of the respective components, such as front, rear, etc., described in a normal use state in which a user sits on the seat.

The specific embodiments of the present utility model are as follows:

as shown in fig. 1 to 12, the present utility model provides an armrest comprising a longitudinal support body 1 and a panel assembly 2 coupled to an upper end of the support body 1; wherein the support body 1 is connected to a side end of the seat portion, the panel assembly 2 is connected to an upper end of the support body 1, and the panel assembly 2 includes an armrest panel 3 for supporting an elbow of a user and a rotary connector 4 connected between the panel assembly 2 and the support body 1; the rotating mechanism is arranged between the rotating connecting piece 4 and the armrest main body 1, so that the rotating connecting piece 4 can rotate circumferentially relative to the armrest main body 1, and the armrest panel 3 is driven to rotate relative to the armrest main body 1. The rotating mechanism comprises a shaft joint part 6 arranged on the rotating connecting piece 4 and a rotating matching part 5 arranged at the upper end of the handrail main body 1; the shaft connection part 6 is in up-down butt joint with the rotating fit part 5, a first rotating inclined plane 7 which is inclined relative to the horizontal plane is arranged at the bottom end of the shaft connection part 6, and the upper end surface of the rotating fit part 5 is correspondingly and obliquely arranged to form a second rotating inclined plane 8; and from back to front, the second rotary inclined surface 8 faces forward and upward; as shown in fig. 1, the handrail panel 3 has a horizontal supporting position, in which the handrail supporting surface 12 formed at the top end of the handrail panel 3 is in a horizontal state, the first rotating inclined surface 7 and the second rotating inclined surface 8 are engaged, and the handrail can be used as a conventional handrail; and when the handrail panel 3 rotates by the horizontal supporting position relative to the supporting main body 1, under the rotary guiding effect between the first rotary inclined plane 7 and the second rotary inclined plane 8, the angle of the handrail supporting surface 12 formed at the top end of the handrail panel 3 is changed at the same time, so that the handrail can provide the handrail supporting requirements of users under different using states.

Specifically, as shown in fig. 2 to 5, in the horizontal supporting position, the rotary support 4 is inclined forward and upward; the front end of the rotary support 4 is connected to the bottom end of the armrest panel 3, and the shaft joint 6 is provided at the rear end of the rotary support 4. The rotating mechanism further comprises a rotating shaft 9 which is arranged at the center of the second rotating inclined surface 8 and protrudes upwards, and a shaft hole 10 which is correspondingly arranged at the center of the first rotating inclined surface 7, wherein the rotating shaft 9 is rotatably arranged in the shaft hole 10 in a penetrating manner; and the upper end of the shaft joint part 6 is concavely provided with a mounting groove 11 which is vertically communicated with the shaft hole 10, and an adjusting limiting piece 13 which is fixedly connected with the rotating shaft 9 is arranged in the mounting groove 11, specifically: the upper end of the rotating shaft 9 is provided with an upward protruding clamping lug 14, and the clamping lug 14 is positioned in the mounting groove 11; the bottom end of the adjusting limiting piece 13 is correspondingly provided with a clamping groove 15 which can be matched with the clamping projection 14 in a clamping way, the adjusting limiting piece 13 is embedded into the mounting groove 11 so that the clamping projection 14 is clamped in the clamping groove 15, then the adjusting limiting piece 13 and the rotating shaft 9 are circumferentially fixed, and a longitudinal screw is further connected between the adjusting limiting piece 13 and the rotating shaft 9, so that the adjusting limiting piece 13 and the rotating shaft 9 are fixedly connected; the adjusting limiting piece 13 is of a cam structure, and then the rotating connecting piece 4 can be limited to be separated from the supporting main body 1 after being connected, so that the connection is stable. Further, a connection upper cover 601 is provided at the upper end of the shaft connection portion 6, and the connection upper cover 601 can cover the installation groove 11 to beautify the appearance.

As shown in fig. 4 and 5, a positioning mechanism is further arranged between the adjusting and limiting member 13 and the shaft connecting portion 6, the adjusting and limiting member 13 is of a cam structure, the adjusting and limiting member 13 is provided with a shrinkage end 112 in a shrinkage shape, and the positioning mechanism comprises a plurality of positioning clamping grooves 16 concavely arranged on the bottom wall of the mounting groove 11 and positioning protrusions 17 correspondingly arranged at the bottom end of the shrinkage end 112 of the adjusting and limiting member 13; the positioning clamping grooves 16 are arranged in the mounting groove 11 in an arc shape; the adjusting limiting piece 13 is fixed with the supporting main body 1 in the circumferential direction, and then when the rotary connecting piece 4 rotates relative to the supporting main body 1, the positioning protrusion 17 rotates relative to the track of the positioning clamping groove 16; and the adjusting limiting piece 13 is configured to be in extrusion fit with the bottom wall of the mounting groove 11 through the positioning protrusion 17, so that the adjusting limiting piece 13 can stay at a plurality of rotating positions in the rotating process, and the gear feeling is obvious.

As shown in fig. 1-2 and 8-11, the first rotary inclined plane 7 and the second rotary inclined plane 8 are elliptical with the same outline; and the long axis direction of the second rotary inclined surface 8 coincides with the front-rear direction. Then, as shown in fig. 1, in the horizontal supporting position, the first rotating inclined surface 7 is matched with the second rotating inclined surface 8, the handrail panel 3 is arranged along the front-back direction, and the handrail supporting surface 3 is in a horizontal state; and a backward inclined supporting body 18 inclined towards the rear lower direction is arranged at the rear end of the handrail panel 3, and the backward inclined supporting body 18 is convenient for supporting the elbow of the user, so that the body feeling is more comfortable. The armrest supporting surface 12 at the upper end of the armrest panel 3 can be adjusted to different angles by rotating the armrest panel 3 from the horizontal supporting position under the action of the armrest panel to meet the use requirements of users in different states;

as shown in fig. 8-11, the present utility model further provides a seat comprising a seat back assembly a, a seat bottom assembly B, and the arm rest; the support main body 1 is connected to the side end of the seat assembly B, and the chair back assembly A can rotate backwards relative to the seat assembly B; the specific method is as follows: 9-10, when the user sits on the seat and leans backward, the chair back assembly A rotates backward, so that the arm position of the user moves backward at the same time; the armrest panel 3 correspondingly has a backward leaning use position which is rotated by 180 degrees from the horizontal support position relative to the support main body 1, in the backward leaning use state, the first rotating inclined plane 7 still coincides with the second rotating inclined plane 8 after rotating 180 degrees, and the armrest support surface 12 at the upper end of the armrest panel 3 is converted to be in a front high back bottom state while the armrest panel 3 rotates backward; so that the change of the armrest panel 3 can just meet the position of the arm of the user in the backward leaning state, and the arm and the elbow of the user can be effectively supported in the backward leaning state. As shown in fig. 10, a sliding adjusting mechanism is arranged between the handrail panel 3 and the rotary connecting piece 4, and the sliding adjusting mechanism is configured to enable the handrail panel 3 to slide along the length direction relative to the rotary connecting piece 4; then, under the backward support position, the handrail panel 3 can be further adjusted to slide obliquely along the front-back direction so as to more accurately adjust the position of the handrail panel, and the use is more convenient; the sliding adjusting mechanism is a sliding structure that is commonly arranged in the existing handrail and enables the handrail panel 3 to be adjusted back and forth, so that redundant description is omitted in this embodiment.

11-12, the armrest panel 3 also has a centered, diagonal support position that deflects from a horizontal support position toward the center of the seat; the armrest panel 3 can facilitate the user to read or perform a hand-tour operation on the seat. The arm of the user can be directly centered on the armrest panel 3 for high comfort of support. And as shown in fig. 12, the present use of the new armrest panel 3 differs from the existing conventional rotatable armrest in the centered, diagonal support position in that: under the rotation guiding action of the first rotation inclined surface 7 and the second rotation inclined surface 8, the armrest supporting surface 12 of the armrest panel 3 will be in an inclined state at this time, specifically, as shown in fig. 12: the outside end of the arm rest panel 3 will be higher than the inside end of the arm rest panel 3; so that the handrail supporting surface 12 is an inclined surface with a low inner side and a high outer side; the use state that the user puts the double arms on the armrest panel 3 in the middle is more adapted, so that the comfort is higher.

The utility model and its embodiments have been described above by way of illustration and not limitation, and the utility model is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present utility model.

Claims (11)

1. An armrest, comprising:

a support body; the armrest support body being longitudinally disposed and configured to be coupled to a side end of the seat portion;

a panel assembly configured to support a human elbow; the panel assembly includes a handrail panel and a rotary connector connected between the handrail panel and the support body; a rotating mechanism is arranged between the rotating connecting piece and the supporting main body so that the handrail panel can be linked with the rotating connecting piece to carry out circumferential rotation adjustment relative to the supporting main body; the rotating mechanism comprises a shaft connection part arranged on the rotating connecting piece and a rotating matching part arranged at the upper end of the armrest main body; the shaft connection part is in up-down butt joint with the rotating fit part, a first rotating inclined plane which is inclined relative to the horizontal plane is arranged at the bottom end of the shaft connection part, and the upper end surface of the rotating fit part is correspondingly and obliquely arranged to form a second rotating inclined plane; and the second rotary inclined plane is inclined upwards and forwards from back to front;

the armrest panel is provided with a horizontal supporting position, the armrest supporting surface at the top end of the armrest panel tends to be horizontal, and the first rotary inclined surface is matched with the second rotary inclined surface at the horizontal supporting position; when the armrest panel rotates from the horizontal supporting position relative to the supporting main body, the first rotating inclined plane and the second rotating inclined plane are guided in a rotating way, so that the angle of the armrest supporting surface at the top end of the armrest panel is changed at the same time.

2. The handrail of claim 1, wherein: the first rotary inclined plane and the second rotary inclined plane are elliptical with the same outline; and the long axis of the second rotary inclined plane coincides with the front-back direction.

3. The handrail of claim 1, wherein: in the horizontal supporting position, the rotary connecting piece is inclined to the front upper side; and the front end of the rotary connecting piece is connected to the bottom end of the handrail panel, and the shaft connection part is arranged at the rear end of the rotary connecting piece.

4. The handrail of claim 1, wherein: the rotating mechanism further comprises a rotating shaft which is arranged on the second rotating inclined plane and protrudes upwards, and a shaft hole which is correspondingly arranged at the first rotating inclined plane, and the rotating shaft is rotatably arranged in the shaft hole in a penetrating manner; and the upper end of the shaft connection part is concavely provided with a mounting groove which is vertically communicated with the shaft hole, and an adjusting limiting part which is fixedly connected with the rotating shaft is arranged in the mounting groove.

5. The handrail as claimed in claim 4, wherein: the upper end of the rotating shaft is provided with an upward protruding clamping lug which is positioned in the mounting groove; the bottom of the adjusting limiting piece is correspondingly provided with a clamping groove which can be matched with the clamping projection in a clamping way, the adjusting limiting piece is embedded in the mounting groove so that the clamping projection is clamped in the clamping groove, and a longitudinal screw is further connected between the adjusting limiting piece and the rotating shaft.

6. The handrail as claimed in claim 5, wherein: a positioning mechanism is also arranged between the adjusting limiting piece and the shaft connecting part; the adjusting limiting piece is of a cam structure and is provided with a shrinkage end in a shrinkage shape, and the positioning mechanism comprises a plurality of positioning clamping grooves concavely arranged on the bottom wall of the mounting groove and positioning protrusions correspondingly arranged at the bottom end of the shrinkage end of the adjusting limiting piece; the positioning clamping grooves are arranged in the mounting grooves in an arc shape; and the adjusting limiting piece is configured to enable the positioning protrusion to be in extrusion fit with the bottom wall of the mounting groove.

7. The handrail of claim 1, wherein: and in the horizontal supporting position, the rear end of the armrest panel is provided with a backward inclined supporting body which inclines backward and downward.

8. A seat, characterized in that: comprising a back assembly, a seat assembly, and an armrest as claimed in any one of claims 1 to 7; the bottom end of the supporting main body is connected with the side end of the seat assembly; and the chair back component can perform backward rotation relative to the chair seat component.

9. The seat according to claim 8, wherein: the armrest panel is provided with a backward tilting use position which is rotated by 180 degrees from a horizontal support position relative to the support main body, the first rotating inclined plane is still matched with the second rotating inclined plane in the backward tilting use position, and the armrest support surface at the top end of the armrest panel is in a front-high back-bottom state while the armrest panel rotates backward.

10. The seat according to claim 9, wherein: and a sliding adjusting mechanism is arranged between the handrail panel and the rotary connecting piece and is configured to enable the handrail panel to slide along the length direction of the handrail panel relative to the rotary connecting piece.

11. The seat according to claim 8, wherein: the armrest panel also has a centered diagonal support position that deflects from the horizontal support position toward the center of the seat; and the armrest panel is in a central inclined supporting position, the armrest supporting surface of the armrest panel is in an inclined state, and the height of the outer side end of the armrest panel is higher than the height of the inner side end of the armrest panel.