CN113229664A

CN113229664A - Armrest and seat

Info

Publication number: CN113229664A
Application number: CN202110591876.8A
Authority: CN
Inventors: 孔航新; 王柏林; 程泽宇
Original assignee: UE Furniture Co Ltd
Current assignee: UE Furniture Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-10
Anticipated expiration: 2041-05-28
Also published as: CN113229664B

Abstract

The invention discloses an armrest and a seat, which comprise an armrest body for supporting the arms of a human body and a support for supporting the armrest body, wherein the support is configured to be connected to the seat, and the armrest body is integrally and rotatably connected to the support; 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 supporting body approaches to a horizontal state to cater to the elbow of the human body; then, in the process that the armrests rotate backwards, the elbow supporting bodies are abutted against the elbows of the human body, and the arms are prevented from sliding downwards; the seat and the armrests can rotate to a proper angle according to the placing posture of the arms of the user, and a good supporting effect is provided for the arms of the user.

Description

Armrest and seat

Technical Field

The invention 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 conventional seat is generally provided with armrests for supporting the arms of the user and improving the comfort of the user. Generally, the existing seat arm rests are mainly classified into a fixed arm rest and a movable arm rest, wherein the movable arm rest can adjust the position of the arm rest relative to the seat, thereby performing folding and unfolding actions; for example, the invention patent with publication number CN208101783U discloses "an armrest structure", in which one end of an armrest is hinged on a seat, and the other end is a free end extending outward; when the user needs to use the armrest, the free end of the armrest can be pushed upwards to rotate around the hinged end to the hovering height, so that the arm can be supported on the armrest. The armrest structure sets the armrest to rotate up and down, so that the armrest 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 in the front-back direction relative to the seat, the arm of a user can only be placed on the armrest according to a relatively fixed posture, but the arm of the user can present different postures in different use occasions, for example, when the user watches a mobile phone, taps a keyboard, plays games, reads books and the like, the arm can have different most comfortable postures, but the existing seat armrest cannot provide adaptive comfortable support for diversified arm postures.

The invention patent with the publication number of CN110063607A discloses a chair armrest and a method for realizing multi-posture support for an arm, the chair armrest comprises an elbow bearing section for bearing the elbow of a user and an arm bearing section for bearing the small arm of the user, wherein the elbow bearing section is connected with a chair; the arm bearing section is connected with the elbow bearing section through a movable connecting structure, and the arm bearing section can rotate to the space above the elbow bearing section around the movable connecting structure; and a hovering locking mechanism for locking the rotated arm bearing section is arranged between the elbow bearing section and the arm bearing section. The implementation method comprises the following steps: arranging the chair armrest with an elbow bearing section and an arm bearing section, wherein the arm bearing section can rotate to the upper space of the elbow bearing section relative to the elbow bearing section; when the posture of the forearm needs to be adjusted, the arm bearing section is rotated to a position which can meet the posture support of the forearm, and the suspension locking mechanism is used for locking; the chair armrest can be suspended at a proper height position according to the requirement of a user, and adaptive comfortable support is provided for the arm of the user. The arm bearing section of the seat armrest can rotate upwards to any position relative to the arm bearing section and then hover to realize angle adjustment of the arm bearing section; but the internal structure is relatively complex, and the pull rope is arranged in the internal structure, so the wear is easy to occur after long-time use, and the service life is short; the armrest is divided into two sections, the elbow bearing section is fixed to realize the rotation adjustment of the arm bearing 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 is increased, and the use is uncomfortable; resulting in increased costs.

Disclosure of Invention

The invention overcomes the defects in the prior art and aims to provide the handrail, the handrail is rotatably connected to the support, and the whole handrail can rotate around the support to be adjusted according to the requirements of users so as to provide adaptive support for the arms; 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; then, in the process that the armrest rotates backwards, the elbow supporting body approaches to the horizontal state to cater to the elbow of the human body; the rotation process is enabled to be attached to the arms of the human body, and the use is more comfortable.

Then, a chair is provided, in which the small arm is placed on the arm supporting surface of the armrest body when the user uses the chair

The technical scheme of the invention is realized as follows:

an armrest comprises an armrest body for supporting the arm of a human body and a support for supporting the armrest body, wherein the support is configured to be connected to a seat, and the armrest body is integrally and rotatably connected to the support; 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 supporting body approaches a horizontal state to cater for the elbow of the human body.

Preferably, the bottom of the handrail body is provided with a rotating seat which faces downwards vertically; 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 constant during the rotation of the armrest body. Then when the user rotates the adjusting armrest, the arm of the user cannot be lifted up and down or fall down back and forth in height, and the height of the center of the small arm is basically kept unchanged; the rotary armrest is different from the rotary armrest which is characterized in that the traditional armrest rotates up and down relative to the seat and the height of the armrest changes constantly; the turning adjustment of the armrest is undoubtedly 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 which enables the armrest body to be switched between a locking state and an unlocking state; when the armrest body is adjusted in a rotating way, the armrest body rotates by taking the bracket as a fulcrum under the action of the control element.

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 movable teeth which can be in tooth joint matching with the first fixed teeth and the second fixed teeth simultaneously are arranged on the locking block; one side of the movable tooth is in tooth joint fit with the second fixed tooth all the time, and the locking block moves to enable the other side of the movable tooth to be in tooth joint fit with the first fixed tooth selectively; the control element can drive the locking block to move so as to switch the armrest body between the locking state and the unlocking state.

Preferably, a first locking piece is fixedly installed on the rotating seat, and the first fixed teeth are arranged on the first locking piece; a second locking piece is fixedly arranged on the matching part, and the second movable teeth are arranged on the second locking piece; the first locking piece and the second locking piece are provided with a rotating shaft in a penetrating mode 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 moving teeth are arranged on the sliding sleeve; the second locking piece is provided with a guide post protruding towards the first locking piece, the sliding sleeve is in sliding fit with 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 connecting piece, and the elastic element is arranged on the guide column; in the unlocking state, the elastic element is elastically compressed to provide elastic force so that the movable tooth has the tendency of being engaged and matched with the first fixed tooth again.

Preferably, the bottom of the rotating seat is provided with a rotating arc surface; the matching part is correspondingly provided with a limiting concave surface which is in rotating fit with the rotating arc surface; the rotating arc surface is concentric with the limiting 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 rotate continuously. The rotation effect of the handrail relative to the support is better, and the handrail can be effectively rotated to be limited.

Preferably, when the armrest body is rotated backwards to the maximum angle, the included angle between the elbow supporting body and the horizontal plane is between 0 and 10 degrees. Can stably support the elbow of the user, and has good supporting effect.

Preferably, the front end of the armrest body is bent downwards to form a hand-held part for being held by a human hand. The operation of the user is more convenient.

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

A chair comprises a chair seat and armrests, wherein a support is fixedly connected to the chair seat.

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

firstly, the rear end of the armrest body is bent upwards to form an elbow supporting piece for supporting the elbow of the human body, so that the elbow supporting body approaches to a horizontal state to meet the elbow of the human body in the backward rotation adjusting process of the armrest body, and the elbow supporting body is abutted 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, then when the relative support of handrail body rotated the regulation, the arm holding surface will be in the tilt state relative to the horizontal plane, and the human elbow will be catered to the elbow supporter simultaneously, makes then the handrail body can put the posture in order to rotate to suitable angle according to user's arm, provides better supporting effect for user's arm, uses more excellent humanization.

Secondly, different with traditional handrail that rotates lies in: the height of the rotating connection point of the armrest body and the bracket is kept unchanged, and the rotating connection point is positioned in the center of the armrest body; then when the user rotates the adjusting armrest, the arm of the user cannot be lifted up and down or fall down back and forth in height, and the height of the center of the small arm is basically kept unchanged; the rotary armrest is different from the rotary armrest which is characterized in that the traditional armrest rotates up and down relative to the seat and the height of the armrest changes constantly; the turning adjustment of the armrest is undoubtedly more comfortable.

In addition, the rotation locking and unlocking of the armrest body and the support are realized in a tooth joint matching mode, a first fixed tooth is arranged in the rotating 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 movable teeth capable of being meshed with the first fixed teeth and the second fixed teeth simultaneously are arranged on the locking block; then the control element can be controlled to drive the locking block to move so as to realize the locking and unlocking of the rotating seat; the locking mode is simple and ingenious; the control mode is simple, and the movement of the locking block can be controlled; the structure is simplified and the cost is saved while the locking effect is ensured; 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 invention;

fig. 2 is an exploded view of the connection of the armrest body and the bracket according to the embodiment of the invention;

FIG. 3 is a schematic perspective view illustrating the body of the armrest rotated backward to a maximum angle in the embodiment of the present invention;

FIG. 4 is a schematic perspective view illustrating an embodiment of the present invention in which the armrest body is not coupled to the support base;

FIG. 5 is a schematic perspective view of an armrest body according to an embodiment of the present invention;

FIG. 6 is a schematic perspective view of a second connecting element and a connecting rod according to an embodiment of the present invention;

FIG. 7 is a schematic perspective view of the first gear coupling member coupled to the rotary base according to an embodiment of the present invention;

FIG. 8 is a perspective view of the control element coupled to the rotatable base in an embodiment of the present invention;

fig. 9 is a perspective view of a seat according to an embodiment of the present invention.

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

Detailed Description

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

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

In the description of the present invention, the term "at least one" means one or more than one 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 is described with reference to the reference orientation of each part, such as front and rear, in a state where the user normally uses the seat after sitting on the seat.

The specific embodiment of the invention is as follows:

as shown in fig. 1 to 8, the present invention provides an armrest, which comprises an armrest body 1 for supporting an arm of a human body and a support 2 for supporting the armrest body 1, wherein the support 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 rotates backwards around the support 2, the arm supporting surface a is in an inclined state relative to the horizontal plane, and the elbow supporting body B slowly approaches to the horizontal state to cater to the elbow of the human body, so that the elbow of the human body is always abutted. Make the handrail body 1 of seat can the free rotation adjust, match the diversified gesture of putting of user's arm under different states, arm holding surface A and elbow supporter B will provide the comfortable support of adaptability for user's arm all the time, improve the use of seat and experience.

As shown in fig. 2-8, the bracket 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 handrail body 1 is provided with a vertically 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 and the matching part 4 are attached to each other left and right to realize that the handrail body 1 can rotate relative to the connecting rod 2 a; be equipped with between seat 3 and the cooperation portion 4 and rotate locking mechanical system in order to realize the locking and the unblock of handrail body 1, specifically mean: a first mounting groove 5 is formed in the rotating seat 3, the contour of the first mounting groove 5 is circular, a first locking piece 6 is embedded in the first mounting groove 5 through a screw, and the contour of the first locking piece 6 is matched with the contour 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 arranged along the circumferential direction of the first locking piece 6. Correspondingly, a second mounting groove 8 is also formed in the matching part 4, 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 also 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; the pitch of the first fixed teeth 7 is equal to that of the second fixed teeth 10, and the arc-shaped profile of the first fixed teeth 7 is matched with that of the second fixed teeth 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 includes a sliding sleeve 12, moving teeth 13 are symmetrically arranged on the sliding sleeve 12 in front and back directions, the moving teeth 13 have a certain width, and the left and right sides of the moving teeth 13 can be meshed with the first fixed teeth 7 and the second fixed teeth 10 simultaneously; specifically, the method comprises the following steps: a guide post 14 protruding towards the first locking piece 6 is arranged on the second locking piece 9, and the guide post 14 is positioned at the position of the center of the circle of the second locking piece 9; the sliding sleeve 12 on the locking block 11 is slidably sleeved on 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 column 14, the elastic element is a spring 16, the spring 16 is sleeved on the guide column 14, one end of the spring 14 is abutted to the second locking piece 9, and the other end of the spring 14 is abutted to the sliding sleeve 12.

When the whole locking device is installed, before the second locking piece 9 is not connected in the second installation groove 8, a rotating shaft is arranged on one side, away from the first locking piece 6, of the second locking piece 9, the rotating shaft is a bolt 15, and the bolt 15 penetrates through the center of the second locking piece 9; then, a second locking piece 9 is fixedly connected in a second mounting groove 8, a first locking piece 6 is fixedly connected in a first mounting groove 5, and a locking block 11 is sleeved on a guide post 14; finally, the first locking piece 6 is butted with the second locking piece 9, the bolt 15 penetrates 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 to be separated from 6 and 9; then, 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, and the gasket 17 enables the first locking piece 6 and the second locking piece 9 to be in a close contact and leaning state, abrasion of the first locking piece and the second locking piece during rotation can be avoided, and service life is prolonged. In addition, in the initial position, i.e. when the spring 14 is not elastically deformed, the locking block 11 is partially located in the first locking member 6, the other part of the locking block 11 is located in the second locking member 9, and the moving tooth 13 is simultaneously engaged with the first fixed tooth 7 and the second fixed tooth 10; namely, the armrest body 1 and the bracket 2 are in a relatively fixed state, and the armrest body 1 is locked.

As shown in fig. 1, 2, 7 and 8, a control element 18 capable of acting on the movement of the locking block 11 is arranged on the side of the rotating seat 3 away from the bracket 2, and the control element 18 comprises a button 19 and a plug-in part 20 arranged on one side of the button 19; the plug part 20 is cylindrical, push rods 21 are arranged at intervals at the end part of the plug part 20 along the circumferential direction of the plug part, and the push rods 21 have certain elasticity and can be elastically bent within a certain range; the rotating seat 3 is provided with a mounting hole 22 which penetrates through the rotating seat from left to right, and the inserting part 20 is inserted into the rotating seat 3 through the mounting hole 22 during connection; the push rod 21 will pass through the first locking member 6 and abut on the side wall of the locking block 11; specifically, the method comprises the following steps: 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 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 penetrates out of 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; then when the control element 18 is completely 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 tooth 13 is meshed with the second fixed tooth 10, the movable tooth 13 is separated from the first fixed tooth 7 left and right, and the armrest body 1 can rotate relative to the connecting rod 2 a; and the spring 16 is compressed, when the armrest body 1 is adjusted by rotation, 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 partially again, the movable tooth 13 is meshed with the first fixed tooth 7 and the second fixed tooth 10 simultaneously again, and the armrest body 1 is locked at the adjusted position. Through the rotation locking mechanism, the unlocking and locking of the armrest body 1 can be effectively realized; the whole structure is simple, the movement of the locking block 11 is controlled, and the design is ingenious; the operation is very convenient, only the button needs to be pressed and loosened, and the use is more convenient and labor-saving.

Of course, another locking manner may be adopted, that is, the above-mentioned rotation locking mechanism may not be provided between the rotation seat 6 and the engagement portion 4, and after the rotation seat 6 and the engagement portion 4 are rotatably connected, the rotation seat 6 and the engagement portion 4 are pressed against each other and kept in a pressed state (not shown); the rotation between the armrest body 1 and the bracket 2 does not need to operate a control element; only force is needed to be applied to the handrail body 1; friction force is generated between the handrail body 1 and the bracket 2, so that the handrail body 1 can stay at the 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 rotation process of the armrest body 1, when the rotation angle is large, the rotation seat 3 and the matching portion 4 can also have a limiting effect, specifically: the bottom contour 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 of the matching part 4 far away from the handrail body 1, and a limiting concave surface 26 which can be in running fit with the rotating arc surface 25 is correspondingly arranged at the notch of the connecting column 2 a; when in connection, the rotating arc surface 25 at the lower end of the rotating seat 3 is attached to the limiting concave surface 26, and the rotating arc surface 25 is concentric with the limiting concave surface 26; then, in the rotation process of the handrail body 1, the rotation arc surface 25 rotates circumferentially relative to the limiting concave surface 26; when the handrail body rotates to a certain angle, the non-arc-shaped 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 handrail body 1 to rotate continuously, so that the handrail body 1 can rotate in a reasonable rotating range, and the handrail body 1 is prevented from rotating too much; and as shown in fig. 3, in the present embodiment, when the armrest body 1 is rotated backward to the maximum angle, the angle between the elbow support 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 connected and fixed on the seat, so that the height of the rotating connection point of the armrest body 1 rotating around the bracket 2 is kept constant; so that the height of the armrest body 1 at the center thereof is kept constant during rotation; when the user uses the handrail, the arm of the user cannot be lifted up and down or fall down back and forth in height, and the height of the center of the small arm is basically kept unchanged; the rotation condition of the armrest body 1 is only matched with diversified placing postures of the user arm in different states, and adaptive stable support is always provided for the user arm under different inclination angles; the rotary armrest is different from the rotary armrest which is characterized in that the traditional armrest rotates up and down relative to the seat and the height of the armrest changes constantly; the armrest can bring more comfortable supporting effect to the arms 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 supporting surface a of the armrest body 1 is in a horizontal state, and the elbow supporting body B is in an inclined state relative to the horizontal plane; when the user is playing the cell-phone or reading, when the forearm need incline, can rotate handrail body 1 backward and adjust: when the button 19 is pressed, the elbow of the user applies force to the elbow supporting body B, and the armrest body 1 can rotate backwards around the connecting rod 2 a; in the process, the arm supporting surface A is in an inclined state relative to the horizontal plane, and the elbow supporting body B slowly approaches to the horizontal plane to always support the elbow of the user; as shown in fig. 3, at this time, the armrest body 1 rotates backwards to the maximum angle, and the arm supporting surface a can better adapt to the posture of the arm of the user, so as to achieve a better supporting effect; the elbow supporting body B is still slightly inclined upwards and can be abutted against the elbow of the user, so that the arm of the user is prevented from sliding off; and a better use experience is brought to the user. In addition, the front end of handrail body 1 still bend the setting downwards and form the handheld portion 27 that is used for the staff to grasp, user when adjusting the handrail and rotate or have a rest on the seat, the handheld portion 27 can just be held to the hand, and the design is more reasonable, and the result of use is better.

As shown in fig. 9, the present invention, in turn, provides a chair comprising a seat 28 and the above-described arm rest; the lower end of the bracket 2 is connected and fixed on the chair seat.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. An armrest, characterized in that: the armrest comprises an armrest body for supporting the arms of a human body and a support for supporting the armrest body, wherein the support is configured to be connected to a seat, and the armrest body is integrally and rotatably connected to the support; 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 supporting body approaches a horizontal state to cater for the elbow of the human body.

2. The handrail of claim 1, wherein: the bottom of the handrail body is provided with a rotating seat which faces downwards vertically; 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 in the middle of the armrest body, and the height of a 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 rotation locking mechanism is arranged between the rotation seat and the matching part, and the rotation locking mechanism comprises a control element which enables the armrest body to be switched between a locking state and an unlocking state; when the armrest body is adjusted in a rotating way, the armrest body rotates by taking the bracket as a fulcrum under the action of the control element.

5. The handrail of 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 movable teeth which can be in tooth joint matching with the first fixed teeth and the second fixed teeth simultaneously are arranged on the locking block; when the handrail body is in a locked state, one side of the movable teeth is meshed with the first fixed teeth, and the other side of the movable teeth is meshed with the second fixed teeth; in an unlocking state, the locking block moves towards the direction of the second fixed teeth, and the movable teeth are separated from the first fixed teeth left and right; the control element can drive the locking block to move so as to switch the armrest body between the locking state and the unlocking state.

6. The handrail of claim 5, wherein: a first locking piece is fixedly arranged on the rotating seat, and the first fixed teeth are arranged on the first locking piece; a second locking piece is fixedly arranged on the matching part, and the second movable teeth are arranged on the second locking piece; the first locking piece and the second locking piece are provided with a rotating shaft in a penetrating mode 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 moving teeth are arranged on the sliding sleeve; the second locking piece is provided with a guide post protruding towards the first locking piece, the sliding sleeve is in sliding fit with 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 connecting piece 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 tooth has the tendency of being engaged and matched with the first fixed tooth 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 limiting concave surface which is in rotating fit with the rotating arc surface; the rotating arc surface is concentric with the limiting 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 rotate continuously.

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

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

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

13. A seat, characterized by: comprising a seat and an arm rest according to any one of claims 1-12, said support being connected and fixed to the seat.