CN219088783U

CN219088783U - Sofa armrest and sofa

Info

Publication number: CN219088783U
Application number: CN202222557762.4U
Authority: CN
Inventors: 王炳坤
Original assignee: Dongguan Aimu Bedroom Supplies Co Ltd
Current assignee: Dongguan Aimu Bedroom Supplies Co Ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-30
Anticipated expiration: 2032-09-26

Abstract

The utility model discloses a sofa armrest and a sofa, and relates to the technical field of household products, comprising a first mounting piece, wherein the first mounting piece is provided with a quick-release assembly; the lifting assembly arranged on the first mounting piece comprises a storage platform capable of adjusting the height up and down; the angle adjusting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is arranged on the object placing platform, the second connecting piece is rotationally connected with the first connecting piece, and a limiting structure for limiting the rotation of the second connecting piece is further arranged between the first connecting piece and the second connecting piece; the second mounting piece is mounted on the second connecting piece, and the first mounting piece and the second mounting piece form the handrail body; the outer sheath is coated on the outer side of the armrest body. The sofa armrest can be detachably connected with the sofa body, and meanwhile, the sofa armrest can be adjusted in height up and down by different people and the area of the sofa body for a user to lie on or lie on side is improved.

Description

Sofa armrest and sofa

Technical Field

The utility model relates to the technical field of household products, in particular to a sofa armrest and a sofa.

Background

At present, sofa armrests in the market are commonly fixedly connected with a sofa body, if the sofa is too large, the sofa cannot be carried in smoothly from a front door of a customer, and the sofa is inconvenient to carry; in addition, the sofa armrest of current sofa use can not adapt to the demand of different crowds to sofa armrest up-and-down altitude mixture control, and under the unable condition of adjusting of sofa armrest, can not increase the area that supplies the user to lie or lie on one's side of sofa body.

Disclosure of Invention

The present utility model aims to solve, at least to some extent, one of the above technical problems in the prior art. Therefore, the embodiment of the utility model provides the sofa armrest, which can realize detachable connection with the sofa body, and simultaneously, can also meet the up-and-down height adjustment of different people on the sofa armrest and improve the area of the sofa body for a user to lie down or lie on side.

The embodiment of the utility model also provides a sofa with the sofa armrest.

According to an embodiment of the first aspect of the present utility model, there is provided a sofa armrest comprising a first mounting provided with a quick release assembly for connection to the outside; the lifting assembly is arranged on the first mounting piece and comprises a storage platform capable of adjusting the height up and down; the angle adjusting assembly comprises a first connecting piece and a second connecting piece, wherein the first connecting piece is installed on the object placing platform, the second connecting piece is rotationally connected with the first connecting piece, and a limiting structure for limiting the rotation of the second connecting piece is further arranged between the first connecting piece and the second connecting piece; the second mounting piece is mounted on the second connecting piece, and the first mounting piece and the second mounting piece form a handrail body; and the outer sleeve is coated on the outer side of the handrail body.

The sofa armrest has at least the following beneficial effects: the first mounting part is used as a mounting standard, the lifting assembly is mounted on the first mounting part, the angle adjustment is arranged on the object placing platform, the first connecting part of the angle adjustment assembly is mounted on the object placing platform, the second connecting part is rotationally connected with the first connecting part, the rotation of the second connecting part is limited through the limiting structure, the second mounting part and the first mounting part form a handrail body of the sofa handrail after being mounted on the second connecting part, the quick-dismantling assembly enables the sofa handrail to be quickly dismounted from the sofa, the sofa handrail is convenient to carry, a customer can conveniently increase or remove the sofa handrail according to own preference, meanwhile, the second mounting part is used as a direct part for the customer after the sofa handrail is mounted on the sofa, due to the existence of the lifting assembly and the angle adjustment assembly, the second mounting piece can be lifted up and down to enable the customer to adjust the sofa armrest to the optimal height suitable for placing the arms of the customer, the arm of the customer with excessive height is prevented from being in a suspended state when the sofa is used, the arm of the customer with low height can also be prevented from being limited to be lifted by the sofa armrest when the sofa is used, the limiting structure is arranged to enable the second mounting piece to hover at any one state between the vertical state and the flat state, on one hand, the area of the arm of the customer can be lifted by the sofa armrest, on the other hand, when the customer needs to lie flat or lie on one side, the area for the customer to lie flat or lie on one side can be increased by the cooperation of the angle adjusting component and the lifting component, so that the customer can feel more comfortable when using the sofa, even when the sofa is used as a headrest for the customer to lie on one side, the head can be well supported, the design is humanized, and the outer cover is consistent with the outer cover of the sofa body, the appearance style and the color of the whole armrest body are consistent with those of the sofa body, and meanwhile, the hand of a customer can be prevented from being clamped in a related structure.

According to the sofa armrest disclosed by the embodiment of the first aspect of the utility model, the first connecting piece is provided with the first notch, the second connecting piece is provided with the second notch, the limiting structure is arranged on the first notch and props against the second notch, and the first notch, the limiting structure and the second notch are matched, so that the rotation range of the second connecting piece is 0-90 degrees.

According to the sofa armrest disclosed by the embodiment of the first aspect of the utility model, the limiting structure comprises the movable plate and the elastic piece, the movable plate is arranged at one end of the first notch, the elastic piece is arranged at the other end of the first notch, the elastic piece is propped against one side of the movable plate, so that the movable plate is tightly clung to the notch wall of the first notch, and the other side of the movable plate is positioned at the clamping part arranged in the second notch.

According to the sofa armrest disclosed by the embodiment of the first aspect of the utility model, the clamping part comprises a plurality of bevel gears which are distributed in a circumferential array by taking the rotation center of the second connecting piece as the circle center, one side of the movable plate is positioned on the movement path of the bevel gears, the bevel gears comprise a first inclined surface, and the first inclined surface can move to be perpendicular to the movable plate.

According to the sofa armrest disclosed by the embodiment of the first aspect of the utility model, the first connecting piece is provided with the first connecting end, the first notch is positioned at the first connecting end, the end part of the second connecting piece provided with the second notch is provided with the third notch, the opening direction of the third notch is perpendicular to the opening direction of the second notch, and the first connecting end is connected with the second connecting piece through the rotating shaft after being inserted into the third notch.

According to the sofa armrest disclosed by the embodiment of the first aspect of the utility model, the third notch is communicated with the second notch, the third notch divides the end part of the second connecting piece into two limiting parts, and after the movable plate is arranged on the first notch, two ends of the movable plate respectively prop against the clamping parts of the two limiting parts.

According to the sofa armrest disclosed by the embodiment of the first aspect of the utility model, the lifting assembly comprises a bottom plate, a scissor fork unit and a driving piece, a plurality of scissor fork units are connected between the bottom plate and the object placing platform, the scissor fork units comprise a first connecting rod and a second connecting rod which are mutually hinged in an X shape, the driving piece is fixed on the bottom plate, and the free end of the driving piece capable of performing reciprocating motion is hinged with the second connecting rod or the first connecting rod.

According to the sofa armrest disclosed by the embodiment of the first aspect of the utility model, the quick-release assembly comprises a first connector and a second connector, the first connector is fixedly connected with the first mounting piece through a bolt, and the first connector is provided with a sliding groove for inserting the second connector.

According to an embodiment of the first aspect of the present utility model, the outer cover is a leather cover, and a portion of the leather cover located between the first mounting piece and the second connecting piece has wrinkles.

According to a second aspect of the present utility model, there is provided a sofa, a sofa body and the sofa armrest according to the first aspect, wherein the sofa body is detachably connected to the sofa body through the quick-release assembly.

The sofa has at least the following effects: the sofa armrest is connected with the sofa body through the quick-release assembly, the sofa armrest is convenient to detach and carry, the lifting assembly and the angle adjusting assembly are arranged, so that a customer can adjust the sofa armrest to the optimal height suitable for placing the arms of the customer, the arms of the customer with overhigh heights are prevented from being in a hanging state when the sofa is used, the condition that the arms are limited and lifted by the sofa armrest when the sofa is used by the customer with lower heights can also be avoided, the second mounting piece is arranged in a limiting structure to enable the second mounting piece to hover in any one state between the vertical state and the flat state, the area of the arms of the customer can be increased on one hand, on the other hand, when the customer needs to lie on one side, the angle adjusting assembly and the lifting assembly are matched, so that the area for the customer to lie on one side or the other can be increased, the customer is more comfortable when using the sofa, the design is humanized, the appearance style and the color of the sofa body are consistent, and the hand of the whole armrest body can be prevented from being clamped in a related structure.

Drawings

The utility model is further described below with reference to the drawings and examples;

FIG. 1 is a schematic view of a sofa body and sofa armrest combination according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a quick release assembly according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a lifting assembly according to an embodiment of the present utility model;

FIG. 4 is a schematic view of an angle adjusting assembly according to an embodiment of the present utility model;

FIG. 5 is a schematic view showing the angle adjusting assembly when the second mounting member is in a square state according to the embodiment of the present utility model;

FIG. 6 is a schematic view showing the state of the angle adjusting assembly when the second mounting member is in an inclined state according to the embodiment of the present utility model;

FIG. 7 is a schematic view showing the state of the angle adjusting assembly when the second mounting member is in a digital state in accordance with the embodiment of the present utility model;

fig. 8 is a schematic structural view of a second connector according to an embodiment of the present utility model.

Reference numerals:

a first mount 100;

a quick release assembly 200, a first connector 210, a second connector 220;

the lifting assembly 300, the bottom plate 310, the first connecting rod 320, the second connecting rod 330, the driving piece 340 and the object placing platform 350;

the angle adjusting assembly 400, the first connecting member 410, the first connecting end 411, the first notch 412, the second connecting member 420, the third notch 421, the second notch 422, the clamping portion 423, the first inclined surface 423a, the second inclined surface 423b, the movable plate 430, the elastic member 440, the rotation shaft 460;

a second mount 500;

sofa body 600, sofa armrest 610.

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, a sofa armrest 610 according to an embodiment of the present utility model includes a first mounting member 100, a lifting assembly 300, an angle adjusting assembly 400, a second mounting member 500, and an outer covering, wherein the first mounting member 100 includes two first boards, two second boards, and a third board, the two first boards are vertically disposed, two second boards horizontally disposed are connected between the two first boards, the third board is laterally disposed between the two first boards, so as to form a first mounting member 100, the first mounting member 100 serves as a mounting reference, the lifting assembly 300 is mounted on the first mounting member 100, in particular, is fixed on the uppermost second board, in this embodiment, the lifting assembly 300 is provided with two sets of lifting assemblies 300, the two sets of lifting assemblies 300 enable lifting of components disposed thereon to be more stable, the lifting assembly 300 includes a placement platform 350 capable of adjusting height up and down, each placement platform 350 is fixedly provided with the angle adjusting assembly 400, wherein the angle adjusting assembly 400 includes a first connecting member 410 and a second connecting member 420, the first connecting member 410 is mounted between the two first boards, thereby forming the first mounting member 100, the first connecting member 410 is mounted on the first rectangular member 420, the second connecting member 420 is rotatably mounted on the second rectangular member 500, and the second side of the first mounting member 500 is rotatably mounted on the second rectangular member 420, and the first mounting member 500 is further limited by the first side of the first mounting member 500, and the second mounting member 500 is rotatably mounted on the second rectangular member 500.

In addition, the third wood board of the first mounting member 100 is further provided with a quick-release assembly 200, the sofa armrest 610 is conveniently and quickly assembled on the sofa body 600 through the quick-release assembly 200, so that the sofa armrest 610 can be quickly assembled and disassembled with a sofa, the sofa armrest 610 is convenient to carry, customers can conveniently increase or remove the sofa armrest 610 according to own preference, meanwhile, after the sofa armrest 610 is mounted on the sofa, the second mounting member 500 is used as a direct part for customers, due to the existence of the lifting assembly 300 and the angle adjusting assembly 400, the second mounting member 500 can be lifted up and down to enable the customers to adjust the sofa armrest 610 to the optimal height suitable for placing the arms of the customers, the arms of the customers with too high heights are prevented from being in a suspended state when the customers with too low heights use the sofa, the arm is limited by the sofa armrest 610 and the setting of the limiting structure makes the second installation member 500 hover at any state between the vertical state and the flat state, so that on one hand, the area of the sofa armrest 610 for lifting the arm of a customer can be increased, on the other hand, when the customer needs to lie flat or lie on one side, the cooperation of the angle adjusting assembly 400 and the lifting assembly 300 can increase the area for the customer to lie flat or lie on one side, so that the customer is more comfortable when using the sofa, even the sofa can be used as a headrest for the customer to lie on one side for providing a good support for the head, the design is humanized, the outer sheath is consistent with the outer sheath of the sofa body 600, so that the appearance style and the color of the whole armrest body are consistent with those of the sofa body 600, and meanwhile, the hand of the customer can be prevented from being pinched in the relevant structure.

As shown in fig. 4, the first connecting member 410 has a first notch 412, the second connecting member 420 is provided with a second notch 422, the limiting structure is disposed on the first notch 412 and abuts against the second notch 422, and the first notch 412, the limiting structure and the second notch 422 cooperate with each other, so that the rotation range of the second connecting member 420 is between 0 ° and 90 °.

Specifically, the limiting structure includes a movable plate 430 and an elastic member 440, as can be seen from fig. 5 to 7, the movable plate 430 is disposed at one end of the first notch 412, the elastic member 440 is disposed at the other end of the first notch 412, the elastic member 440 abuts against one side of the movable plate 430, so that the movable plate 430 is tightly attached to a notch wall of the first notch 412, the other side of the movable plate 430 is disposed in the second notch 422, a space for the movable plate 430 to turn over is provided in the first notch 412, when the second connecting member 420 is turned clockwise as shown in fig. 7, the clamping member 423 can give the movable plate 430 a temporary turning force, so that the movable plate 430 compresses the elastic member 440, and makes the movable plate 430 lose the limitation of the clamping member 423, the second connecting member 420 can be turned by 90 ° at most when the second connecting member 420 stops turning, and the second connecting member 420 is not turned beyond the state as shown in fig. 5 (to be explained, the state in which the second connecting member 420 is turned by 90 °), the elastic member 440 can drive the movable plate 430 to reversely rotate against the notch wall of the movable plate 430 to rotate beyond the limit of the notch 420, and then the second connecting member 420 is turned beyond the limit of the state as shown in fig. 5 (when the second connecting member 423 is turned beyond the state in which the state where the second connecting member 420 is turned beyond the limit of the second connecting member 420 is not turned) is turned beyond the limit of the second connecting member 420, and the state shown in fig. 7, in the state shown in fig. 7, the rotation angle of the second connecting piece 420 exceeds 0 °), the clamping portion 423 can enable the movable plate 430 to return to the state of being pressed by the elastic piece 440, and the cooperation of the movable plate 430 and the elastic piece 440 at this time can continuously limit the rotation of the second connecting piece 420, so that the structure is applied to the sofa armrest 610 to enable the sofa armrest 610 to be used by a user to be turned left and right for adjustment, thereby meeting the requirements that the user can increase the available area of the sofa for lying on the side or lying on the sofa and be used as a headrest. In this embodiment, the elastic member 440 is preferably a spring plate.

The first connecting piece 410 has a first connecting end 411, the first notch 412 is located at the first connecting end 411, the end of the second connecting piece 420 provided with the second notch 422 has a third notch 421, the opening direction of the third notch 421 is perpendicular to the opening direction of the second notch 422, the first connecting end 411 is inserted into the third notch 421 and then connected with the second connecting piece 420 through the rotating shaft 460, so that the second connecting piece 420 can rotate relative to the first connecting piece 410, further, the third notch 421 is connected with the second notch 422, the third notch 421 divides the end of the second connecting piece 420 into two limiting parts, after the movable plate 430 is mounted on the first notch 412, two ends of the movable plate 430 respectively abut against the clamping parts 423 of the two limiting parts, in this embodiment, the two second notches 422 are distributed in a circumferential array with the rotation center of the second connecting piece 420 as the center, the two first notches 412 are also arranged in a total, the two first notches 412 are also distributed in a circumferential array with the rotation center of the second connecting piece 420 as the center, further, the third notch 421 is connected with the second notch 420, and the two limiting parts are arranged in a circumferential array with the rotation center of the second connecting piece 420, and the two limiting parts have the rotation center of the second notch 422 is equal to the rotation center of the second notch 422, and the two limiting parts can rotate in a distance of rotation range of the rotation of the two limiting parts 422 is equal to the rotation, and the two limiting parts can rotate when the two limiting parts have the rotation distance of the two limiting part 422 are equal to the rotation distance of the rotation center of the two notch 422 rotates.

Specifically, as shown in fig. 8, the clamping portion 423 includes a plurality of helical teeth circumferentially arrayed with a center of rotation of the second connecting member 420 as a center of a circle, one side of the movable plate 430 is located on a movement path of the helical teeth, the helical teeth include a first inclined plane 423a, the helical teeth further include a second inclined plane 423b, and the first inclined plane 423a can move to be perpendicular to the movable plate 430. When the second connecting member 420 is rotated clockwise, the second inclined surface 423b gives the movable plate 430 a driving force, so that one side of the movable plate 430 is separated from the movement path of the helical teeth, at this time, the second connecting member 420 is not limited and can rotate clockwise, when the movable plate 430 is rotated to be separated from the second inclined surface 423b, and as the elastic member 440 drives the movable plate 430 to restore to be attached to the groove wall of the first notch 412, the first inclined surface 423a also moves to be perpendicular to the movable plate 430, the second connecting member 420 cannot be rotated anticlockwise, that is, the second mounting member 500 cannot be rotated anticlockwise, when the customer lies on his side or lies on his back, after the customer adjusts the second mounting member 500 to a suitable inclination angle, the cooperation of the elastic member 440 and the movable plate 430 can realize hovering of the second mounting member 500, and an optimal position state of the second mounting member 500 suitable for the customer to use is maintained.

As shown in fig. 3, the lifting assembly 300 includes a base plate 310, a scissor unit and a driving member 340, wherein a plurality of scissor units are connected between the base plate 310 and the storage platform 350, the scissor unit includes a first link 320 and a second link 330 hinged to each other in an X-shape, the driving member 340 is fixed to the base plate 310, and a free end of the driving member 340 capable of performing a reciprocating motion is hinged to the second link 330 or the first link 320. In this embodiment, two adjacent scissor units are hinged to each other, an end of a first link 320 of the scissor unit closest to the bottom plate 310 is hinged to the bottom plate 310, and an end of a second link 330 is slidably connected to the bottom plate 310; the end of the first link 320 of the scissor fork unit closest to the storage platform 350 is hinged to the storage platform 350, and the end of the second link 330 is slidably connected to the storage platform 350. The second link 330 or the first link 320 is driven by the driving member 340, so that the second link 330 slides, when the second link 330 slidably connected with the bottom plate 310 approaches to the end of the first link 320, the object placement platform 350 rises, that is, the second mounting member 500 rises, and when the second link 330 slidably connected with the bottom plate 310 is far away from the end of the first link 320, the object placement platform 350 falls, that is, the second mounting member 500 falls. The driving member 340 is a pneumatic rod with an adjusting function, the force provided by the pneumatic rod is 500N, and the pneumatic rod can quickly drive the second mounting member 500 to rise or fall, and of course, the pneumatic rod can hover at various heights, so that the pneumatic rod is convenient for a customer to adjust to the height of the handrail suitable for the requirements of the height of the customer.

As shown in fig. 2, the quick release assembly 200 includes a first connector 210 and a second connector 220, the first connector 210 is fixedly connected with the first installation member 100 through a bolt, the first connector 210 has a chute into which the second connector 220 is inserted, when the sofa armrest 610 needs to be assembled with the sofa body 600, the second connector 220 is fixed to the sofa body 600 through a bolt, and then the first connector 210 fixed to the sofa armrest 610 is plugged with the second connector 220, so that the second connector 220 is inserted into the chute, and the assembly of the sofa armrest 610 and the sofa body 600 is completed, and the installation and the disassembly are both convenient.

It should be noted that, the outer sheath is preferably a leather sheath, and the portion of the leather sheath between the first mounting member 100 and the second connecting member 420 has folds, so that the second mounting member 500 is convenient to lift up and down without tearing the outer sheath.

The embodiment of the utility model further provides a sofa, including the sofa body 600 and the sofa armrest 610 described above, wherein, the sofa armrest 610 and the sofa body 600 are detachably connected through the quick-release assembly 200, so that the sofa armrest 610 and the sofa body 600 are convenient to mount and dismount, the lifting assembly 300 and the angle adjusting assembly 400 are arranged, so that a customer can adjust the sofa armrest 610 to an optimal height suitable for placing the customer's arm, the condition that the arm of the customer with too high height is in a suspended state when the sofa is used is avoided, the condition that the arm is limited to be lifted by the sofa armrest 610 when the sofa is used by the customer with too low height is also avoided, the setting of the limiting structure enables the second mounting piece 500 to hover in any state between the vertical state and the flat state, on one hand, on the one hand, the area of the sofa armrest 610 can be increased, on the other hand, the cooperation of the angle adjusting assembly 400 and the lifting assembly 300 enables the area for the customer to be increased for lying down or lying on the side, the sofa is more comfortable when the customer uses, the sofa body 600 is designed, the whole appearance of the sofa body is enabled to be consistent with the sofa body, and the color of the sofa body can be prevented from being injured by the relevant sofa body, and the sofa body is enabled to be in a user-friendly appearance.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims

1. A sofa armrest, characterized in that: comprising

A first mount (100), the first mount (100) being provided with a quick release assembly (200) for connection to the outside;

the lifting assembly (300) is arranged on the first mounting piece (100) and comprises a storage platform (350) capable of adjusting the height up and down;

the angle adjusting assembly (400) comprises a first connecting piece (410) and a second connecting piece (420), wherein the first connecting piece (410) is installed on the object placing platform (350), the second connecting piece (420) is rotationally connected with the first connecting piece (410), and a limiting structure for limiting the rotation of the second connecting piece (420) is further arranged between the first connecting piece (410) and the second connecting piece (420);

a second mounting member (500) mounted to the second connecting member (420), the first mounting member (100) and the second mounting member (500) forming a handrail body; and

and the outer sheath is coated on the outer side of the handrail body.

2. The sofa armrest according to claim 1, characterized in that: the first connecting piece (410) is provided with a first notch (412), the second connecting piece (420) is provided with a second notch (422), the limiting structure is arranged in the first notch (412) and props against the second notch (422), and the first notch (412), the limiting structure and the second notch (422) are matched, so that the rotation range of the second connecting piece (420) is 0-90 degrees.

3. The sofa armrest according to claim 2, characterized in that: the limiting structure comprises a movable plate (430) and an elastic piece (440), wherein the movable plate (430) is arranged at one end of the first notch (412), the elastic piece (440) is arranged at the other end of the first notch (412), the elastic piece (440) is propped against one side of the movable plate (430) so that the movable plate (430) is tightly attached to a notch wall of the first notch (412), and the other side of the movable plate (430) is arranged at a clamping part (423) arranged in the second notch (422).

4. A sofa armrest according to claim 3, characterized in that: the clamping part (423) comprises a plurality of bevel gears which are distributed in a circumferential array by taking the rotation center of the second connecting piece (420) as the circle center, one side of the movable plate (430) is positioned on the movement path of the bevel gears, the bevel gears comprise a first inclined surface (423 a), and the first inclined surface (423 a) can move to be perpendicular to the movable plate (430).

5. The sofa armrest according to claim 3 or 4, characterized in that: the first connecting piece (410) is provided with a first connecting end (411), the first notch (412) is located at the first connecting end (411), the second connecting piece (420) is provided with a third notch (421) at the end part of the second notch (422), the opening direction of the third notch (421) is perpendicular to the opening direction of the second notch (422), and the first connecting end (411) is inserted into the third notch (421) and then is connected with the second connecting piece (420) through a rotating shaft (460).

6. The sofa armrest according to claim 5, characterized in that: the third notch (421) is communicated with the second notch (422), the end part of the second connecting piece (420) is divided into two limiting parts by the third notch (421), the movable plate (430) is mounted on the first notch (412), and two ends of the movable plate (430) respectively prop against the clamping parts (423) of the two limiting parts.

7. A sofa armrest according to any one of claims 1 to 3, characterized in that: lifting assembly (300) include bottom plate (310), scissors fork unit and driving piece (340), bottom plate (310) with be connected with a plurality of between putting thing platform (350) scissors fork unit, scissors fork unit is including being X articulated first connecting rod (320) and second connecting rod (330) each other, driving piece (340) are fixed in bottom plate (310), driving piece (340) can carry out reciprocating motion's free end articulates second connecting rod (330) or first connecting rod (320).

8. A sofa armrest according to any one of claims 1 to 3, characterized in that: the quick release assembly (200) comprises a first connector (210) and a second connector (220), wherein the first connector (210) is fixedly connected with the first mounting piece (100) through bolts, and the first connector (210) is provided with a sliding groove for the second connector (220) to be inserted.

9. A sofa armrest according to any one of claims 1 to 3, characterized in that: the outer wrap is a leather wrap having folds in a portion thereof between the first mounting member (100) and the second connecting member (420).

10. A sofa, characterized in that: comprising a sofa body (600) and a sofa armrest (610) according to any one of claims 1 to 9, wherein said sofa body (600) is detachably connected by means of said quick release assembly (200).