CN219109062U - Armrest and seat - Google Patents

Abstract

The utility model discloses an armrest and a seat, which comprise an armrest body for supporting arms of a human body and a bracket for supporting the armrest body, wherein the bracket is configured to be connected to the seat, and the armrest body is integrally and rotatably connected to the bracket; the upper surface of the armrest body is provided with an arm supporting surface for supporting the forearm of a human body, and the rear end of the armrest body is bent upwards to form an elbow supporting body for supporting the elbow of the human body; when the armrest body rotates backwards, the front end of the armrest body is lifted upwards, and the arm supporting surface is in an inclined state relative to the horizontal plane; the elbow support body approaches to a horizontal state to cater to the elbow of a human body; then, in the backward rotation process of the armrest, the elbow support body is mutually abutted against the elbow of the human body, so that the arm is prevented from sliding downwards; the seat is characterized in that the armrests can rotate to a proper angle according to the arm placing posture of the user, and good supporting effect is provided for the arms of the user.

Description

Armrest and seat

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

Background

In order to improve the comfort of the seat, the existing seat is generally provided with armrests so as to support the arms of a user and improve the riding comfort. Generally, existing armrests of seats are mainly divided into fixed armrests and movable armrests, wherein the movable armrests can adjust the positions of the armrests relative to the seat, so as to complete the actions of folding and unfolding; for example, "a seat armrest structure" disclosed in patent publication CN208101783U, in which one end of an armrest is hinged to a seat and the other end is a free end extending outward; when a user needs to use the armrest, the free end of the armrest can be pushed upwards to rotate around the hinged end to a hovering height, so that the arm can be placed on the armrest. The armrest structure has the aim that the armrests can be arranged to rotate up and down, so that the armrests can be stored when not in use, and the space of the seat is not occupied; when the armrest is used, the armrest can only rotate relative to the seat in the front-back direction, and the arms of a user can only be placed on the armrest in a relatively fixed posture, but the arms can present different postures in different use occasions, for example, the arms can have different most comfortable postures when the user looks at a mobile phone, taps a keyboard, plays a game, reads books and the like, but the existing seat armrest cannot provide adaptive comfortable support for various arm postures.

The utility model patent with the publication number of CN110063607A discloses a seat armrest and a method for realizing multi-posture support on an arm, wherein the seat armrest comprises an elbow supporting section for supporting the elbow of a user and an arm supporting section for supporting the forearm of the user, and the elbow supporting section is connected with a seat; the arm bearing section is connected with the elbow bearing section through a movable connecting structure, and the arm bearing section can rotate around the movable connecting structure to the upper space of the elbow bearing section; a hovering locking mechanism for locking the rotated support arm segment is arranged between the support elbow segment and the support arm segment. The implementation method comprises the following steps: the armrests of the seat are provided with an elbow supporting section and an arm supporting section, and the arm supporting section can rotate relative to the elbow supporting section to the space above the elbow supporting section; when the posture of the forearm needs to be adjusted, the arm bearing section is rotated to a position capable of meeting the posture support of the forearm, and the suspension locking mechanism is utilized for locking; the chair armrests can hover at proper height positions according to the needs of the user, and provide adaptive comfortable support for the arms of the user. The arm bearing section of the chair armrest can rotate the arm bearing section upwards to any position relative to the arm bearing section and then hover so as to realize the angle adjustment of the arm bearing section; however, the internal structure is relatively complex, the stay cord is arranged in the internal structure, the stay cord is easy to wear after long-time use, and the service life is not long; the armrest is divided into two sections, the elbow supporting section is fixed to realize the rotation adjustment of the arm supporting section, and the integral rotation of the armrest cannot be realized; when the armrests are adjusted, the included angle between the elbow bearing section and the arm bearing section can be increased, so that the use is uncomfortable; resulting in an increase in cost.

Disclosure of Invention

The utility model overcomes the defects in the prior art, and aims to provide the handrail which is rotationally connected to the bracket, and the whole handrail can be rotationally adjusted around the bracket according to the requirements of a user so as to provide adaptive support for the arm; the upper surface of the armrest body is provided with an arm supporting surface for supporting the forearm of the human body, and the rear end of the armrest body is bent upwards to form an elbow supporting body for supporting the elbow of the human body; then, in the backward rotation process of the armrest, the elbow support body approaches to a horizontal state so as to cater for the elbow of the human body; in the rotating process, the human arm is attached, and the use is more comfortable.

Then provides a seat, when a user uses the seat, the small arm is placed on the arm supporting surface of the armrest body

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

an armrest comprising an armrest body for supporting an arm of a person and a bracket for supporting the armrest body, the bracket being configured to be coupled to a seat, the armrest body being integrally rotatably coupled to the bracket; the upper surface of the armrest body is provided with an arm supporting surface for supporting the forearm of a human body, and the rear end of the armrest body is bent upwards to form an elbow supporting body for supporting the elbow of the human body; when the armrest body rotates backwards, the front end of the armrest body is lifted upwards, and the arm supporting surface is in an inclined state relative to the horizontal plane; the elbow support body approaches to a horizontal state to meet the elbow of the human body.

Preferably, a vertical downward rotating seat is arranged at the bottom of the armrest body; the bracket comprises a connecting rod which is longitudinally arranged, and the upper end of the connecting rod is correspondingly provided with a matching part which is in running fit with the rotating seat; the rotating seat is connected and matched with the matching part so that the armrest body can rotate forwards or backwards around the connecting rod.

Preferably, the rotating seat is located at the middle position of the armrest body, and the height of the rotating connection point of the rotating seat and the matching part is kept unchanged during the rotation of the armrest body. When the user rotates the adjusting armrest, the arm of the user can not lift up or fall down and up in height, and the height at the center of the forearm can be basically kept unchanged; different from the traditional armrest which rotates up and down relative to the chair seat, the height of the armrest is changed continuously; the rotation adjustment of the armrest is certainly more comfortable.

Preferably, a rotation locking mechanism is arranged between the rotation seat and the matching part, and the rotation locking mechanism comprises a control element for switching the armrest body between a locking state and an unlocking state; when the armrest body is rotated and adjusted, the control element is acted to enable the armrest body to rotate by taking the bracket as a fulcrum.

Preferably, the rotation locking mechanism comprises a first fixed tooth arranged on the rotation seat and a second fixed tooth arranged on the matching part; a locking block is movably connected between the rotating seat and the matching part, and the locking block is provided with movable teeth which can be simultaneously meshed with the first fixed teeth and the second fixed teeth; one side of the movable tooth is always meshed with the second fixed tooth, and the locking block moves to enable the other side of the movable tooth to be selectively meshed with the first fixed tooth; the control element can drive the locking block to move so as to switch the armrest body between a locking state and an unlocking state.

Preferably, a first locking piece is arranged and fixed on the rotating seat, and the first fixed tooth is arranged on the first locking piece; a second locking piece is arranged and fixed on the matching part, and the second movable tooth is arranged on the second locking piece; a rotating shaft is arranged between the first locking piece and the second locking piece in a penetrating way so that the first locking piece can rotate relative to the second locking piece.

Preferably, the locking block is arranged between the first locking piece and the second locking piece; the locking block comprises a sliding sleeve, and the movable teeth are arranged on the sliding sleeve; the second locking piece is provided with a guide post protruding towards the direction of the first locking piece, the sliding sleeve is in sliding fit on the guide post, and the locking block moves along the length direction of the guide post.

Preferably, an elastic element is arranged between the locking block and the second tooth connector, and the elastic element is arranged on the guide post; in the unlocking state, the elastic element is elastically compressed to provide elastic force so that the movable teeth have a tendency to be meshed with the first fixed teeth again.

Preferably, a rotary arc surface is arranged at the bottom of the rotary seat; the matching part is correspondingly provided with a limit concave surface in rotary fit with the rotary arc surface; the rotary arc surface is concentric with the limit concave surface; the rotating seat rotates until the outer wall of the rotating seat is abutted against the two ends of the limiting concave surface so as to limit the handrail body to continue rotating. The rotating effect of the handrail relative to the bracket is better, and the handrail can be effectively limited in rotation.

Preferably, when the armrest body rotates backward to a maximum angle, the included angle between the elbow support body and the horizontal plane is between 0 and 10 degrees. The elbow support device can stably support the elbow of a user, and has good support effect.

Preferably, the front end of the armrest body is bent downwards to form a hand holding part for holding by a human hand. More convenient for the user to operate.

Preferably, the rotating seat is in rotating fit with the matching part and is in a clamping state; friction exists between the rotating seat and the matching part to enable the armrest body to stay at the rotated position. So that the rotation adjustment has good adjustment hand feeling.

A chair comprises a chair seat and armrests, wherein the bracket is connected and fixed on the chair seat.

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

firstly, the rear end of the armrest body is bent upwards to form an elbow support piece for supporting the elbow of the human body, so that the elbow support body approaches to a horizontal state to meet the elbow of the human body in the backward rotation adjustment process of the armrest body, and the elbow support body abuts against the elbow of the human body to prevent the arm from sliding off the armrest; the use effect is better.

Furthermore, the whole rotation of handrail body is connected on the support, and the support is connected with the seat, and then the handrail body rotates when adjusting relative support, and the arm holding surface is in the inclination state with respect to the horizontal plane, and the elbow supporter will cater to human elbow simultaneously, makes the handrail body can put the gesture in order to rotate to suitable angle according to the user's arm then, provides better supporting effect for the user's arm, uses more preferably humanization.

Second, unlike conventional rotating armrests, the present utility model is: the height of the rotation connecting point of the armrest body and the bracket is kept unchanged, and the rotation connecting point is positioned at the center of the armrest body; when the user rotates the adjusting armrest, the arm of the user can not lift up or fall down and up in height, and the height at the center of the forearm can be basically kept unchanged; different from the traditional armrest which rotates up and down relative to the chair seat, the height of the armrest is changed continuously; the rotation adjustment of the armrest is certainly more comfortable.

In addition, the rotation locking and unlocking of the armrest body and the bracket are realized in a toothed joint matching mode, a first fixed tooth is arranged in the rotation seat, and a second fixed tooth is arranged on the matching part; a locking block is movably connected between the rotating seat and the matching part, and a movable tooth capable of being meshed with the first fixed tooth and the second fixed tooth is arranged on the locking block; the control element can be controlled to drive the locking block to move so as to lock and unlock the rotating seat; the locking mode is simple and ingenious; the control mode is also very simple, and the movement of the locking block is controlled; the locking effect is ensured, the structure is simplified, and the cost is saved; and the operation is very convenient.

Drawings

Fig. 1 is a schematic perspective view of an armrest body in an initial position according to an embodiment of the present utility model;

FIG. 2 is an exploded view of the connection of the armrest body to the bracket in an embodiment of the present utility model;

FIG. 3 is a schematic perspective view illustrating the armrest body rotated backward to a maximum angle according to an embodiment of the present utility model;

fig. 4 is a schematic perspective view of the present utility model in which the armrest body and the support base are not connected;

fig. 5 is a schematic perspective view of an armrest body according to an embodiment of the present utility model;

FIG. 6 is a schematic view showing a connection structure of a second tooth connector and a connecting rod according to an embodiment of the present utility model;

FIG. 7 is a schematic perspective view of the connection of the first tooth connector and the rotating seat according to the embodiment of the present utility model;

FIG. 8 is a schematic perspective view of a control element connected to a rotating base according to an embodiment of the present utility model;

fig. 9 is a schematic perspective view of a seat according to an embodiment of the present utility model.

The reference numerals are as follows: a handrail body 1; an arm support surface a; an elbow support body B; a bracket 2; a connecting rod 2a; a rotating seat 3; a fitting portion 4; a first mounting groove 5; a first locking member 6; a first tooth 7; a second mounting groove 8; a second locking member 9; a second fixed tooth 10; a lock block 11; a sliding sleeve 12; a movable tooth 13; a guide post 14; a bolt 15; a spring 16; a gasket 17; a control element 18; a button 19; a plug-in portion 20; a push rod 21; a mounting hole 22; a catch 23; a card hole 24; rotating the arc surface 25; a limit concave surface 26; a hand-held portion 27; a seat 28.

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, in the case of no conflict, the embodiments of the present application and the 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 respective portions, such as front and rear, etc., which are described in a state in which a user sits on the seat and then normally uses the seat.

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

as shown in fig. 1 to 8, the present utility model provides an armrest, which comprises an armrest body 1 for supporting arms of a human body and a bracket 2 for supporting the armrest body 1, wherein the bracket 2 is fixedly connected to a seat; the armrest body 1 is integrally and rotatably connected to the bracket 2; the upper surface of the armrest body 1 is provided with an arm supporting surface A for supporting the forearm of a human body, and the rear end of the armrest body 1 is bent upwards to form an elbow supporting body B for supporting the elbow of the human body; then, when the armrest body 1 integrally rotates backwards around the bracket 2, the arm support surface A is in an inclined state relative to the horizontal plane, and the elbow support body B gradually approaches to a horizontal state to meet the elbow of the human body and always plays a role in abutting against the elbow of the human body. The armrest body 1 of the seat can be freely rotated and adjusted, the arm support surface A and the elbow support body B can always provide adaptive comfortable support for the arms of the user, and the use experience of the seat is improved.

As shown in fig. 2-8, the support 2 is provided with a longitudinal connecting rod 2a, the armrest body 1 is rotatably connected to the connecting rod 2a, the lower end of the connecting rod 2a is fixedly connected to the seat, and the connecting rod 2a is slightly inclined; the bottom of the armrest body 1 is provided with a vertical downward rotating seat 3, and the top end of the connecting rod 2a is correspondingly provided with a matching part 4 which can be in rotating fit with the rotating seat 3; the rotating seat 3 is abutted with the matching part 4 left and right so as to realize that the handrail body 1 can rotate relative to the connecting rod 2a; a rotation locking mechanism is arranged between the rotation seat 3 and the matching part 4 to lock and unlock the armrest body 1, specifically: the rotary seat 3 is provided with a first mounting groove 5, the outline of the first mounting groove 5 is circular, a first locking piece 6 is embedded and mounted in the first mounting groove 5 through a screw, and the outline of the first locking piece 6 is matched with the outline of the first mounting groove 5; the first locking piece 6 is provided with first fixed teeth 7 which are symmetrical in front and back, and the first fixed teeth 7 are distributed along the circumferential direction of the first locking piece 6. Correspondingly, the matching part 4 is also provided with a second mounting groove 8, a second locking piece 9 is fixedly connected in the second mounting groove 8 through a screw, and the outline of the second locking piece 9 is circular; the second locking piece 9 is correspondingly provided with second fixed teeth 10 which are symmetrical in front and back, and the second fixed teeth 10 are also distributed along the circumferential direction of the second locking piece 9; and the tooth pitch of the first fixed tooth 7 is equal to that of the second fixed tooth 10, and the arc-shaped profile of the first fixed tooth 7 is matched with that of the second fixed tooth 10.

As shown in fig. 2, 5 and 6, a locking block 11 is movably connected between the first locking member 6 and the second locking member 9, the locking block 11 comprises a sliding sleeve 12, moving teeth 13 are symmetrically arranged on the sliding sleeve 12 front and back, the moving teeth 13 have a certain width, and the left side and the right side of the moving teeth 13 can be simultaneously meshed with the first fixed teeth 7 and the second fixed teeth 10; the specific method is as follows: a guide column 14 protruding towards the direction of the first locking piece 6 is arranged on the second locking piece 9, and the guide column 14 is positioned at the center of the circle of the second locking piece 9; the sliding sleeve 12 on the locking block 11 is in sliding sleeve connection with the guide post 14, so that the locking block 11 can slide along the length direction of the guide post 14. And an elastic element is further arranged between the locking block 11 and the guide post 14, the elastic element is a spring 16, the spring 16 is sleeved on the guide post 14, one end of the spring 14 is abutted with the second locking piece 9, and the other end of the spring 14 is abutted with the sliding sleeve 12.

When the whole is installed, a rotating shaft is arranged on one side of the second locking piece 9 far away from the first locking piece 6 before the second locking piece 9 is not connected in the second installation groove 8, the rotating shaft is a bolt 15, and the bolt 15 is arranged at the center position of the second locking piece 9 in a penetrating way; then the second locking piece 9 is fixedly connected in the second mounting groove 8, the first locking piece 6 is fixedly connected in the first mounting groove 5, and the locking block 11 is sleeved on the guide post 14; finally, the first locking piece 6 is butted with the second locking piece 9, the bolt 15 passes through the first locking piece 6, and a nut is connected to the other end of the bolt 15 to limit the first locking piece and the second locking piece from being separated from the 6 and the 9; the first locking piece 6 and the second locking piece 9 are connected and can rotate relatively, so that the handrail body 1 can rotate relative to the bracket 2; the connection mode is simple and quick, and the installation is convenient; in addition, a gasket 17 is arranged between the first locking piece 6 and the second locking piece 9, the gasket 17 enables the first locking piece 6 and the second locking piece 9 to be in a close contact state, abrasion during rotation of the first locking piece and the second locking piece can be avoided, and the service life is prolonged. In addition, in the initial position, that is, when the spring 14 does not elastically deform, the locking block 11 is partially positioned in the first locking piece 6, the other part of the locking block 11 is positioned in the second locking piece 9, and the movable tooth 13 is simultaneously meshed with the first fixed tooth 7 and the second fixed tooth 10; namely, the handrail body 1 and the bracket 2 are in a relatively fixed state, and the handrail body 1 is locked.

As shown in fig. 1, 2, 7 and 8, a control element 18 which can act on the movement of the locking block 11 is arranged on the side of the swivel base 3 remote from the bracket 2, the control element 18 comprising a push button 19 and a plug-in part 20 arranged on the side of the push button 19; the insertion part 20 is cylindrical, push rods 21 are arranged at intervals along the circumferential direction of the end part of the insertion part 20, and the push rods 21 have certain elasticity and can be elastically bent within a certain range; the rotary seat 3 is provided with a mounting hole 22 penetrating left and right, and the plug-in part 20 is inserted into the rotary seat 3 through the mounting hole 22 when connected; the push rod 21 passes through the first locking piece 6 and abuts against the side wall of the locking block 11; the specific method is as follows: a clamping tongue 23 is arranged at the end part of the push rod 21, and a clamping hole 24 is correspondingly arranged on the first locking piece 6; when the push rod 21 is installed, the push rod 21 is inserted into the rotating seat 3 along the length direction of the push rod, the clamping tongue 23 on the push rod 21 passes through the clamping hole 24 on the first locking piece 6, and the clamping tongue 23 can limit the push rod to be separated from the rotating seat 3; and the push rod 21 can move left and right relative to the first locking piece 7; and then after the control element 18 has been installed; the push rod 21 can push the locking block 11 to move leftwards by pressing the button 19; when the locking block 11 moves to completely enter the second locking piece 9, the movable teeth 13 are meshed with the second fixed teeth 10, the movable teeth 13 are separated from the first fixed teeth 7 left and right, and the handrail body 1 can rotate relative to the connecting rod 2a; and the spring 16 is compressed, when the armrest body 1 is adjusted in a rotating way, the button 19 is released, the spring 16 provides elastic force to enable the locking piece 11 to move and reset again, so that the locking piece 11 enters the first locking piece 6 again partially, the movable teeth 13 are meshed with the first fixed teeth 7 and the second fixed teeth 10 again at the same time, and the armrest body 1 is locked at the adjusted position. Through the rotation locking mechanism, unlocking and locking of the handrail body 1 can be effectively realized; the whole structure is simple, and the design is ingenious by controlling the movement of the locking block 11; the operation is very convenient, only the button is needed to be pressed and released, and the use is more convenient and labor-saving.

Of course, another locking mode may be adopted, that is, the above-mentioned rotation locking mechanism may not be provided between the rotation seat 6 and the mating portion 4, and after the rotation seat 6 is rotationally connected with the mating portion 4, the rotation seat 6 and the mating portion are mutually pressed and kept in a pressed state (not shown); the rotation between the handrail body 1 and the bracket 2 does not need to operate a control element; only the force is applied to the handrail body 1; friction force is generated between the armrest body 1 and the bracket 2, so that the armrest body 1 can stay at a rotated angle; by adopting the locking mode, the whole structure is simplified, and the cost is greatly saved.

As shown in fig. 3 and 4, in the process of rotating the armrest body 1, when the rotation angle is larger, the rotation seat 3 and the matching portion 4 can also play a limiting role, specifically speaking: the bottom outline of the rotating seat 3 is semicircular, and a rotating arc surface 25 is arranged on the bottom surface of the rotating seat 3; a notch is formed on one side, far away from the handrail body 1, of the matching part 4, and a limit concave surface 26 which can be in rotary matching with the rotary arc surface 25 is correspondingly arranged at the notch of the connecting column 2a; when in connection, the rotary arc surface 25 at the lower end of the rotary seat 3 is attached to the limit concave surface 26 in a direction, and the rotary arc surface 25 is concentric with the limit concave surface 26; then, in the rotation process of the armrest body 1, the rotation arc surface 25 circumferentially rotates relative to the limit concave surface 26; when the armrest body rotates to a certain angle, the non-arc surface at the bottom of the rotating seat 3 is abutted against the front end or the rear end of the limiting concave surface 26 to limit the armrest body 1 to continue rotating, so that the armrest body 1 can rotate within a reasonable rotation range, and the armrest body 1 is prevented from rotating too much; in this embodiment, as shown in fig. 3, when the armrest body 1 is rotated backward to the maximum angle, the angle between the elbow support body and the armrest surface is 3 °.

As shown in fig. 1-5, the rotating seat 3 is located at the middle position of the armrest body 1, and the bracket 2 is fixedly connected to the seat, so that the height of the rotating connection point of the armrest body 1 rotating around the bracket 2 is kept unchanged; so that the height of the armrest body 1 at the center thereof is kept unchanged during rotation; therefore, when a user uses the armrest, the arm of the user can not lift up or fall down and forth in height, and the height at the center of the forearm can be basically kept unchanged; the rotation condition of the armrest body 1 is only matched with diversified placing postures of the user arms in different states, and the armrest body always provides adaptive stable support for the user arms at different inclination angles; different from the traditional armrest which rotates up and down relative to the chair seat, the height of the armrest is changed continuously; the armrest disclosed by the utility model can bring more comfortable supporting effect to the arm of a user; and adapting to different arm placing postures of the user.

As shown in fig. 1 and 3, in the initial position, the arm support surface a on the armrest body 1 is in a horizontal state, and the elbow support body B is in an inclined state relative to the horizontal plane; when a user plays a mobile phone or reads books, the arm needs to be inclined, the armrest body 1 can be adjusted in a backward rotation mode: pressing the button 19, the elbow of the user applies force to the elbow support body B, and the armrest body 1 can rotate backwards around the connecting rod 2a; in the process, the arm supporting surface A is in an inclined state relative to the horizontal plane, and the elbow supporting body B gradually approaches to the horizontal plane so as to always support the elbow of the user; as shown in fig. 3, the armrest body 1 rotates backwards to the maximum angle, and the arm supporting surface a can better adapt to the arm posture of the user, so as to achieve a better supporting effect; the elbow support body B is slightly inclined upwards, and can be mutually abutted against the elbow of the user, so that the arm of the user is prevented from sliding off; and better use experience is brought to the user. In addition, the front end of the handrail body 1 is also bent downwards to form a hand holding part 27 for holding by hands, and a user can just hold the hand holding part 27 by hands when adjusting the rotation of the handrail or resting on a seat, so that the design is more reasonable and the use effect is better.

As shown in fig. 9, the present utility model then provides a seat comprising a seat base 28 and armrests as described above; the lower end of the bracket 2 is fixedly connected to the chair seat.

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 (13)

1. An armrest, characterized in that: the arm rest comprises an arm rest body for supporting the arm of a human body and a bracket for supporting the arm rest body, wherein the bracket is configured to be connected to a seat, and the whole arm rest body is rotatably connected to the bracket; the upper surface of the armrest body is provided with an arm supporting surface for supporting the forearm of a human body, and the rear end of the armrest body is bent upwards to form an elbow supporting body for supporting the elbow of the human body; when the armrest body rotates backwards, the front end of the armrest body is lifted upwards, and the arm supporting surface is in an inclined state relative to the horizontal plane; the elbow support body approaches to a horizontal state to meet the elbow of the human body.

2. The handrail of claim 1, wherein: the bottom of the armrest body is provided with a vertical downward rotating seat; the bracket comprises a connecting rod which is longitudinally arranged, and the upper end of the connecting rod is correspondingly provided with a matching part which is in running fit with the rotating seat; the rotating seat is connected and matched with the matching part so that the armrest body can rotate forwards or backwards around the connecting rod.

3. The handrail of claim 2, wherein: the rotating seat is positioned at the middle position of the armrest body, and the height of the rotating connection point of the rotating seat and the matching part is kept unchanged in the rotating process of the armrest body.

4. The handrail of claim 2, wherein: a rotary locking mechanism is arranged between the rotary seat and the matching part, and comprises a control element for switching the armrest body between a locking state and an unlocking state; when the armrest body is rotated and adjusted, the control element is acted to enable the armrest body to rotate by taking the bracket as a fulcrum.

5. The handrail as claimed in claim 4, wherein: the rotation locking mechanism comprises a first fixed tooth arranged on the rotation seat and a second fixed tooth arranged on the matching part; a locking block is movably connected between the rotating seat and the matching part, and the locking block is provided with movable teeth which can be simultaneously meshed with the first fixed teeth and the second fixed teeth; one side of the movable tooth is meshed with the first fixed tooth, and the other side of the movable tooth is meshed with the second fixed tooth when the armrest body is in a locking state; in the unlocking state, the locking block moves towards the second fixed tooth direction, and the movable tooth is separated from the first fixed tooth left and right; the control element can drive the locking block to move so as to switch the armrest body between a locking state and an unlocking state.

6. The handrail as claimed in claim 5, wherein: a first locking piece is arranged and fixed on the rotating seat, and the first fixed teeth are arranged on the first locking piece; a second locking piece is arranged and fixed on the matching part, and the second fixed teeth are arranged on the second locking piece; a rotating shaft is arranged between the first locking piece and the second locking piece in a penetrating way so that the first locking piece can rotate relative to the second locking piece.

7. The handrail of claim 6, wherein: the locking block is arranged between the first locking piece and the second locking piece; the locking block comprises a sliding sleeve, and the movable teeth are arranged on the sliding sleeve; the second locking piece is provided with a guide post protruding towards the direction of the first locking piece, the sliding sleeve is in sliding fit on the guide post, and the locking block moves along the length direction of the guide post.

8. The handrail of claim 7, wherein: an elastic element is arranged between the locking block and the second tooth connector and is arranged on the guide post; in the unlocking state, the elastic element is elastically compressed to provide elastic force so that the movable teeth have a tendency to be meshed with the first fixed teeth again.

9. The handrail of claim 2, wherein: the bottom of the rotating seat is provided with a rotating arc surface; the matching part is correspondingly provided with a limit concave surface in rotary fit with the rotary arc surface; the rotary arc surface is concentric with the limit concave surface; the rotating seat rotates until the outer wall of the rotating seat is abutted against the two ends of the limiting concave surface so as to limit the handrail body to continue rotating.

10. The handrail of claim 9, wherein: when the armrest body rotates backwards to the maximum angle, the included angle between the elbow support body and the horizontal plane is between 0 and 10 degrees.

11. The handrail of claim 1, wherein: the front end of the armrest body is bent downwards to form a hand holding part for being held by hands.

12. The handrail of claim 2, wherein: the rotating seat is in rotating fit with the matching part and is in a clamping state; friction exists between the rotating seat and the matching part to enable the armrest body to stay at the rotated position.

13. A seat, characterized in that: comprising a seat and an armrest according to any one of claims 1 to 12, said support being fixedly connected to the seat.

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