CN219069803U - Armrest - Google Patents

Abstract

The utility model belongs to the technical field of armchairs, and particularly relates to an armrest, which comprises a seat plate and a back plate, wherein the back plate is fixedly arranged at the edge of a seat plate top plate, and the armrest further comprises: the two limiting grooves are respectively formed in the left side and the right side of the seat plate, a limiting plate is slidably mounted in the limiting grooves, and a through groove is formed in the limiting plate; the two vertical grooves are symmetrically formed in one side of the backboard, and the top of each vertical groove is provided with a slot; the two L-shaped armrests are respectively and slidably arranged in the two through grooves, so that the utility model ensures that personnel can correct the back of the personnel through the L-shaped armrests during rest, and the situation that the personnel form humpback due to poor sitting posture caused by long-time sitting is avoided; meanwhile, the height of the L-shaped handrail can be guaranteed to be adjusted by a person, when the person types on a narrower desk by using a computer, the elbow of the person can be put on the L-shaped handrail, the burden of the arm of the person is reduced, and the arm ache of the person is avoided.

Description

Armrest

Technical Field

The utility model belongs to the technical field of armchairs, and particularly relates to an armrest.

Background

Armchairs are the general name for armchairs with armrests, and the rest are called armchairs except for round-backed chairs and chairs. The style and decoration of the tea table are simple and complex, the tea table is matched with the tea table, and four chairs and two tables are arranged on two sides of a hall, so that the tea table is symmetrically displayed. The armchair has the advantages of convenient carrying, light weight, low price and the like; is preferred for the travel articles. Can be carried on the back. The chair is wear-resistant and durable, is suitable for gathering, enjoying cool, outdoor leisure and the like, is easy to open and close, is small in volume after being taken up, does not occupy space, is reinforced by leather at stress points, is durable and wear-resistant, is commonly called as a armchair except for a round-backed armchair and a chair for crossing, and is called as an armchair for the rest.

For the staff sitting on the armchair for a long time, the staff sits for a long time to form a bad sitting posture, the back of the staff can have a certain humpback, the humpback of the staff is seriously corrected by lacking auxiliary tools on the armchair, and part of the armchair does not have the height of the adjusting armrest, and for the staff typing by a computer, the arm pain can be caused because part of the desk is narrow and the elbows of the staff fall under the desktop for a long time without the support of the armrests of the armchair.

Disclosure of Invention

Aiming at the technical problems, the utility model provides the handrail, which ensures that personnel can correct the back of the personnel through the L-shaped handrail during rest, and avoids the situation that the personnel form humpback due to bad sitting posture formed by sitting for a long time; meanwhile, the height of the L-shaped handrail can be guaranteed to be adjusted by a person, when the person types on a narrower desk by using a computer, the elbow of the person can be put on the L-shaped handrail, the burden of the arm of the person is reduced, and the arm ache of the person is avoided.

In view of this, the present utility model provides an armrest comprising a seat pan and a back plate fixedly mounted at an edge of a seat pan top plate, further comprising:

the two limiting grooves are respectively formed in the left side and the right side of the seat plate, a limiting plate is slidably mounted in the limiting grooves, and a through groove is formed in the limiting plate;

the two vertical grooves are symmetrically formed in one side of the backboard, and the top of each vertical groove is provided with a slot;

the two L-shaped handrails are respectively and slidably arranged in the two through grooves, one end of each L-shaped handrail penetrates through the corresponding slot, an extrusion assembly for preventing the L-shaped handrails from moving up and down is arranged in each through groove, and a thread assembly for preventing the L-shaped handrails from moving back and forth is arranged on the seat plate.

According to the technical scheme, one end of the L-shaped handrail is located in a through groove in the limiting plate through the limiting plate, the limiting groove, the L-shaped handrail, the vertical groove, the slot, the extrusion assembly and the thread assembly, when the limiting plate moves towards the back plate in the limiting groove, one end of the L-shaped handrail can be inserted into the slot, when a person takes a rest, two shoulders can be placed under the two L-shaped handrails, the back of the person leans against the back plate straightly, then the L-shaped handrail is extruded on the shoulders, the L-shaped handrail is fixed through the thread assembly, the L-shaped handrail is prevented from moving back and forth and loosening, the person can be prevented from correcting the back of the person during the rest, bad sitting postures caused by long-time sitting are avoided, and humpback is formed for the person; meanwhile, when one end of the L-shaped handrail can move downwards in the vertical groove, the limiting plate is in the limiting groove and is contacted with one end far away from the backboard, the other end of the L-shaped handrail can move downwards in the through groove, then, the L-shaped handrail can be fixed through the extrusion assembly, the height of the L-shaped handrail can be ensured to be adjusted by personnel, the elbows of the personnel can be put on the L-shaped handrail when the personnel types with computers on a narrower desk, the burden of the arms of the personnel is reduced, the arm ache of the personnel is avoided, and the working process of the personnel is prevented from being influenced.

In the above technical solution, further, the method further includes:

the two first elastic belts are fixedly arranged on one side of the backboard, and the thorn-faced magic tape is fixedly arranged on one side of the first elastic belts;

the two second elastic belts are fixedly arranged on the other side of the backboard, and a rough surface magic tape is fixedly arranged on one side of each second elastic belt.

In this technical scheme, through the first elastic band that sets up, thorn face magic subsides, second elastic band and mao face magic subsides, when letting personnel's back lean on the backplate, personnel can paste the thorn face magic subsides on the first elastic band on the mao face magic subsides on the second elastic band, tightening the human body through two first elastic bands and two second elastic bands, make personnel's back can paste on the backplate all the time, can further improve personnel's effect of correcting the back during rest.

In the above technical solution, further, a distance between the two first elastic belts is 20-30cm, a distance between the two second elastic belts is 20-30cm, and the positions of the first elastic belts and the second elastic belts correspond to each other.

In the technical scheme, the two first elastic belts and the two second elastic belts can be respectively fixed at the chest position and the belly position of a person, so that the back of the person is supported on the back plate.

In the above technical solution, further, the extrusion assembly includes:

the disc groove is formed in one side of the through groove, and a first threaded hole is formed in one side of the through groove;

the extrusion disc is movably arranged in the disc groove;

the rubber disc is fixedly arranged on one side of the extrusion disc, and a rotating groove communicated with the first threaded hole is formed in the other side of the extrusion disc;

the limiting disc is rotatably arranged in the rotating groove, one side of the limiting disc is fixedly provided with a threaded column, and one end of the threaded column penetrates through the rotating groove and the first threaded hole and is fixedly provided with a rotating button.

In this technical scheme, after L shape handrail moved suitable position, personnel's elbow can take on L shape handrail, personnel rotatable swivel knob makes swivel knob drive screw thread post rotate and remove to L shape handrail's direction in first screw hole, simultaneously, screw thread post drive spacing dish rotates and extrudees the pressure disk and remove to L shape handrail's direction in the disc groove in the rotation groove, until the pressure disk drives the rubber dish and extrudes to L shape handrail, makes the rubber dish produce deformation, ensures to fix L shape handrail in the logical groove of limiting plate steadily.

In the above technical scheme, further, the screw thread post rotates with the rotary groove to be connected, screw thread post and first screw hole threaded connection, the diameter of extrusion disk and disc groove and rubber disc equals.

In this technical scheme, ensure that the screw thread post can normal rotation in the groove of rotating, the screw thread post can normal rotation in first screw hole, and extrusion disk and rubber disc can normal removal in the disc groove.

In the above technical solution, further, the extrusion assembly includes:

the two jacks are respectively arranged at the left side and the right side of the seat plate and are close to the position of the back plate, a second threaded hole communicated with the jacks is formed in the L-shaped handrail, a threaded rod is mounted in the second threaded hole in a threaded manner, one end of the threaded rod extends into the corresponding jack, and one end of the threaded rod is in plug-in fit with the jack.

In this technical scheme, through second screw hole, threaded rod and the jack that sets up, ensure that L shape handrail extrudees on the shoulder, when letting personnel's back hug closely on the backplate, rotatable threaded rod makes the one end of threaded rod rotate in the second screw hole, and under the effect of screw thread, the one end of threaded rod removes from the second screw hole and inserts in the jack, ensures that L shape handrail's stable in structure, L shape handrail can not back-and-forth movement.

In the above technical solution, further, the method further includes:

the two L-shaped cushions are respectively and fixedly arranged on the side walls of the two L-shaped armrests, the two ends of each L-shaped cushion are respectively positioned in the corresponding slot and the through slot, one end of each L-shaped cushion is in plug-in fit with the corresponding slot, one end of each L-shaped cushion is in sliding connection with the corresponding through slot, and each L-shaped armrest is in plug-in fit with the corresponding slot.

In this technical scheme, through the L shape cushion that sets up, L shape cushion has certain elasticity, guarantees that L shape handrail extrudees when on personnel's shoulder, has L shape cushion to cushion and protects, avoids L shape handrail direct and shoulder contact, avoids L shape handrail to extrude too tightly causing the injury to the shoulder, simultaneously, in L shape cushion's one end can insert the slot, and L shape cushion's the other end can be in logical groove normal upper and lower removal, and L shape handrail's one end also can normally insert in the slot.

In the above technical solution, further, the method further includes:

the semicircular groove is formed in the top of the backboard;

the pillow is fixedly arranged in the semicircular groove and is in a semicircular structure.

In the technical scheme, the semicircular grooves and the pillows are arranged to ensure that the head of a person can lean backwards when the back of the person leans against the back plate, so that the neck is positioned in the pillows, the cervical vertebra of the person can be exercised, and the pillows have certain elasticity, and the discomfort of the neck of the person is avoided.

The beneficial effects of the utility model are as follows:

1. according to the handrail, one end of the L-shaped handrail is located in a through groove in the limiting plate through the limiting plate, the limiting plate can be inserted into the slot when moving towards the back plate in the limiting groove, two shoulders can be placed under the two L-shaped handrails when a person takes a rest, the back of the person leans against the back plate straightly, then the L-shaped handrail is extruded on the shoulders, the L-shaped handrail is fixed through the threaded component, the L-shaped handrail is prevented from moving back and forth, the back of the person can be corrected during the rest, and poor sitting postures caused by long-time sitting are avoided, so that the person forms a humpback; meanwhile, when one end of the L-shaped handrail can move downwards in the vertical groove, the limiting plate is in the limiting groove and is contacted with one end far away from the backboard, the other end of the L-shaped handrail can move downwards in the through groove, then, the L-shaped handrail can be fixed through the extrusion assembly, the height of the L-shaped handrail can be ensured to be adjusted by personnel, the elbows of the personnel can be put on the L-shaped handrail when the personnel types with computers on a narrower desk, the burden of the arms of the personnel is reduced, the arm ache of the personnel is avoided, and the working process of the personnel is prevented from being influenced.

2. This handrail, through the first elastic band that sets up, thorn face magic subsides, second elastic band and mao face magic subsides, when letting personnel's back lean on the backplate, personnel can paste the thorn face magic subsides on the first elastic band on the mao face magic subsides on the second elastic band, through the tightening of two first elastic bands and two second elastic bands to the human body, make personnel's back can paste on the backplate all the time, can further improve personnel's effect of correcting the back during rest.

3. According to the armrests, the L-shaped soft cushion is arranged, so that certain elasticity is provided for the L-shaped soft cushion, the L-shaped soft cushion is used for carrying out cushion protection when the L-shaped armrests are extruded on the shoulders of a person, the L-shaped armrests are prevented from directly contacting with the shoulders, and the L-shaped armrests are prevented from being injured due to the fact that the L-shaped armrests are extruded too tightly on the shoulders.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a second schematic diagram of the overall structure of the present utility model;

FIG. 3 is a third schematic diagram of the overall structure of the present utility model;

FIG. 4 is a schematic view showing the internal detailed structure of the seat plate according to the present utility model;

FIG. 5 is a schematic view of the structure of the L-shaped handrail of the present utility model;

FIG. 6 is a schematic cross-sectional view of a back plate according to the present utility model;

FIG. 7 is a schematic view showing the internal detailed structure of the limiting plate according to the present utility model;

FIG. 8 is a schematic cross-sectional view of a limiting plate according to the present utility model;

FIG. 9 is a schematic view of the area structure of the squeeze plate of the present utility model;

FIG. 10 is a schematic cross-sectional view of an extrusion plate according to the present utility model;

fig. 11 is a schematic cross-sectional view of a seat plate according to the present utility model.

The label in the figure is:

1. a seat plate; 11. a limit groove; 12. a jack; 2. a limiting plate; 21. a through groove; 22. a disk slot; 23. a first threaded hole; 3. a back plate; 31. a vertical slot; 32. a slot; 33. a semicircular groove; 331. a pillow; 4. an L-shaped armrest; 41. a second threaded hole; 42. an L-shaped cushion; 5. a threaded rod; 6. a first elastic belt; 61. a second elastic belt; 7. an extrusion plate; 71. a rotating groove; 8. a rubber plate; 9. a limiting disc; 91. a threaded column; 92. and rotating the knob.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

In the description of the present application, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. For ease of description, the dimensions of the various features shown in the drawings are not drawn to actual scale. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

It should be noted that, in the description of the present application, the terms "front, rear, upper, lower, left, right", "horizontal, vertical, horizontal", and "top, bottom", etc. generally refer to an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, and merely for convenience of description of the present application and simplification of the description, the azimuth terms do not indicate and imply that the apparatus or element referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

It should be noted that, in this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Example 1:

the embodiment provides an armrest, including bedplate 1 and backplate 3, backplate 3 fixed mounting is at the edge of bedplate 1 roof, its characterized in that still includes:

the two limiting grooves 11 are respectively formed in the left side and the right side of the seat plate 1, the limiting plates 2 are slidably mounted in the limiting grooves 11, and the limiting plates 2 are provided with through grooves 21;

the two vertical grooves 31 are symmetrically formed on one side of the backboard 3, and the top of each vertical groove 31 is provided with a slot 32;

the two L-shaped handrails 4 are respectively and slidably arranged in the two through grooves 21, one end of each L-shaped handrail 4 penetrates through the corresponding slot 32, an extrusion component for preventing the L-shaped handrails 4 from moving up and down is arranged in each through groove 21, and a thread component for preventing the L-shaped handrails 4 from moving back and forth is arranged on the seat board 1.

According to the embodiment, through the limiting plate 2, the limiting groove 11, the L-shaped armrests 4, the vertical groove 31, the inserting grooves 32, the extruding assembly and the threaded assembly, one end of the L-shaped armrests 4 is ensured to be positioned in the through groove 21 in the limiting plate 2, when the limiting plate 2 moves towards the back plate 3 in the limiting groove 11, one end of the L-shaped armrests 4 can be inserted into the inserting grooves 32, when a person takes a rest, two shoulders can be placed under the two L-shaped armrests 4, the backs of the person are straightly leaned against the back plate 3, then the L-shaped armrests 4 are extruded on the shoulders, the L-shaped armrests 4 are fixed through the threaded assembly, the L-shaped armrests 4 are prevented from moving back and forth, the back of the person can be corrected during the rest, the bad sitting posture of the person for a long time is avoided, and the humpback of the person is formed; meanwhile, when one end of the L-shaped handrail 4 can move downwards in the vertical groove 31, the limiting plate 2 is in contact with one end far away from the backboard 3 in the limiting groove 11, and the other end of the L-shaped handrail 4 can move downwards in the through groove 21, then, the L-shaped handrail 4 can be fixed through the extrusion component, so that the height of the L-shaped handrail 4 can be ensured to be adjusted by personnel, the elbows of the personnel can be put on the L-shaped handrail 4 when the personnel types with computers on a narrower desk, the burden of the arms of the personnel is reduced, the arm ache of the personnel is avoided, and the working process of the personnel is prevented from being influenced.

Example 2:

the present embodiment provides an armrest, which includes the following technical features in addition to the technical solutions of the foregoing embodiments, and further includes:

the two first elastic belts 6 are fixedly arranged on one side of the backboard 3, and the thorn-faced magic tape is fixedly arranged on one side of the first elastic belts 6;

the two second elastic belts 61 are fixedly arranged on the other side of the back plate 3, and a rough surface magic tape is fixedly arranged on one side of the second elastic belts 61.

This embodiment can see that through the first elastic band 6 that sets up, thorn face magic subsides, second elastic band 61 and mao face magic subsides, when letting personnel's back lean on backplate 3, personnel can paste the thorn face magic subsides on first elastic band 6 on the mao face magic subsides on second elastic band 61, through the tightening of two first elastic bands 6 and two second elastic bands 61 to the human body, make personnel's back can paste on backplate 3 all the time, can further improve personnel's effect of correcting the back during rest.

Example 3:

the present embodiment provides a handrail having the following technical features in addition to the technical aspects of the above embodiments, in which the distance between the two first elastic belts 6 is 20-30cm, the distance between the two second elastic belts 61 is 20-30cm, and the positions of the first elastic belts 6 and the second elastic belts 61 correspond.

In this embodiment, it can be seen that it is ensured that the two first elastic bands 6 and the two second elastic bands 61 are fixed to the chest and belly of the person, respectively, so that the back of the person is supported against the back plate 3.

Example 4:

the present embodiment provides an armrest, which has the following technical features in addition to the technical aspects including the above embodiments, and the pressing assembly includes:

a disc groove 22, wherein the disc groove 22 is arranged on one side of the through groove 21, and a first threaded hole 23 is arranged on one side of the through groove 21;

the extrusion disc 7 is movably arranged in the disc groove 22;

the rubber disc 8 is fixedly arranged on one side of the extrusion disc 7, and a rotating groove 71 communicated with the first threaded hole 23 is formed in the other side of the extrusion disc 7;

the limiting plate 9, the limiting plate 9 is installed in the rotation groove 71 in a rotating mode, a threaded column 91 is fixedly installed on one side of the limiting plate 9, and one end of the threaded column 91 penetrates through the rotation groove 71 and the first threaded hole 23 and is fixedly provided with a rotating button 92.

In this embodiment, it can be seen that when the L-shaped handrail 4 moves up to a proper position, the person can rotate the rotating knob 92 to make the rotating knob 92 drive the threaded post 91 to rotate in the first threaded hole 23 and move towards the L-shaped handrail 4, and at the same time, the threaded post 91 drives the limit plate 9 to rotate in the rotating groove 71 and press the pressing plate 7 to move towards the L-shaped handrail 4 in the disc groove 22 until the pressing plate 7 drives the rubber plate 8 to press onto the L-shaped handrail 4, so that the rubber plate 8 deforms, thereby ensuring that the L-shaped handrail 4 is stably fixed in the through groove 21 of the limit plate 2.

Example 5:

the present embodiment provides an armrest, which has the following technical features in addition to the technical scheme of the above embodiment, in which the threaded post 91 is rotatably connected to the rotation groove 71, the threaded post 91 is screwed to the first threaded hole 23, and the diameters of the pressing plate 7, the disk groove 22, and the rubber plate 8 are equal.

As can be seen from this embodiment, the screw post 91 is ensured to be normally rotated in the rotation groove 71, the screw post 91 is normally rotated in the first screw hole 23, and the pressing plate 7 and the rubber plate 8 are normally moved in the disk groove 22.

Example 6:

the present embodiment provides an armrest, which has the following technical features in addition to the technical aspects including the above embodiments, and the pressing assembly includes:

the two jacks 12 are respectively arranged at the left side and the right side of the seat board 1 and are close to the position of the backboard 3, the L-shaped handrail 4 is provided with a second threaded hole 41 communicated with the jacks 12, the threaded rod 5 is installed in the second threaded hole 41 in a threaded manner, one end of the threaded rod 5 extends into the corresponding jack 12, and one end of the threaded rod 5 is in plug-in fit with the jack 12.

In this embodiment, it can be seen that, by the second threaded hole 41, the threaded rod 5 and the insertion hole 12, it is ensured that the L-shaped handrail 4 is pressed against the shoulder, when the back of a person is abutted against the back plate 3, the threaded rod 5 can be rotated, one end of the threaded rod 5 rotates in the second threaded hole 41, and under the action of the threads, one end of the threaded rod 5 moves from the second threaded hole 41 to be inserted into the insertion hole 12, so that the structural stability of the L-shaped handrail 4 is ensured, and the L-shaped handrail 4 does not move back and forth.

Example 7:

the present embodiment provides an armrest, which includes the following technical features in addition to the technical solutions of the foregoing embodiments, and further includes:

the two L-shaped soft cushions 42 are respectively and fixedly arranged on the side walls of the two L-shaped armrests 4, two ends of the L-shaped soft cushions 42 are respectively positioned in the corresponding slots 32 and the through grooves 21, one ends of the L-shaped soft cushions 42 are in plug-in fit with the slots 32, one ends of the L-shaped soft cushions 42 are in sliding connection with the through grooves 21, and the L-shaped armrests 4 are in plug-in fit with the slots 32.

It can be seen that, in this embodiment, through the L-shaped soft pad 42, the L-shaped soft pad 42 has a certain elasticity, so that when the L-shaped armrest 4 is pressed against the shoulder of a person, the L-shaped soft pad 42 is used for protecting the shoulder, so as to prevent the L-shaped armrest 4 from directly contacting the shoulder, and prevent the L-shaped armrest 4 from damaging the shoulder due to too tight pressing, and meanwhile, one end of the L-shaped soft pad 42 can be inserted into the slot 32, and the other end of the L-shaped soft pad 42 can move up and down in the through slot 21, and one end of the L-shaped armrest 4 can also be inserted into the slot 32.

Example 8:

the present embodiment provides an armrest, which includes the following technical features in addition to the technical solutions of the foregoing embodiments, and further includes:

a semicircular groove 33, wherein the semicircular groove 33 is formed at the top of the backboard 3;

the pillow 331 is fixedly installed in the semicircular groove 33, and the pillow 331 has a semicircular structure.

In this embodiment, it can be seen that, by the semicircular groove 33 and the pillow 331, when the back of the person leans against the back plate 3, the head of the person can lean backwards, so that the neck is located in the pillow 331, and the cervical vertebra of the person can be exercised, and the pillow 331 has a certain elasticity, so that discomfort of the neck of the person is avoided.

The embodiments of the present application and the features of the embodiments may be combined without conflict, and the present application is not limited to the specific embodiments described above, which are merely illustrative, not restrictive, and many forms may be made by those of ordinary skill in the art, without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims (8)

1. An armrest, comprising a seat plate (1) and a back plate (3), the back plate (3) being fixedly mounted at the edge of the top plate of the seat plate (1), characterized in that it further comprises:

the two limiting grooves (11) are respectively formed in the left side and the right side of the seat plate (1), a limiting plate (2) is slidably mounted in the limiting grooves (11), and a through groove (21) is formed in the limiting plate (2);

the two vertical grooves (31) are symmetrically formed in one side of the back plate (3), and the top of each vertical groove (31) is provided with a slot (32);

the two L-shaped handrails (4), two L-shaped handrails (4) are respectively and slidably installed in two through grooves (21), one end of each L-shaped handrail (4) penetrates through a corresponding slot (32), an extrusion component used for preventing the L-shaped handrails (4) from moving up and down is arranged in each through groove (21), and a threaded component used for preventing the L-shaped handrails (4) from moving back and forth is arranged on the seat board (1).

2. The handrail of claim 1, wherein: further comprises:

the two first elastic belts (6), the two first elastic belts (6) are fixedly arranged on one side of the backboard (3), and the thorn-faced magic tape is fixedly arranged on one side of the first elastic belts (6);

the two second elastic belts (61) are fixedly arranged on the other side of the back plate (3), and a rough surface magic tape is fixedly arranged on one side of each second elastic belt (61).

3. The handrail of claim 2, wherein: the distance between the two first elastic belts (6) is 20-30cm, the distance between the two second elastic belts (61) is 20-30cm, and the positions of the first elastic belts (6) and the second elastic belts (61) correspond.

4. The handrail of claim 1, wherein: the extrusion assembly includes:

a disc groove (22), wherein the disc groove (22) is formed on one side of the through groove (21), and a first threaded hole (23) is formed on one side of the through groove (21);

the extrusion disc (7) is movably arranged in the disc groove (22);

the rubber disc (8), the rubber disc (8) is fixedly arranged on one side of the extrusion disc (7), and a rotating groove (71) communicated with the first threaded hole (23) is formed in the other side of the extrusion disc (7);

the limiting plate (9), limiting plate (9) rotate and install in rotating groove (71), one side fixed mounting of limiting plate (9) has screw thread post (91), and the one end of screw thread post (91) passes rotating groove (71) and first screw hole (23) and fixed mounting have swivel button (92).

5. The handrail as claimed in claim 4, wherein: the screw column (91) is rotationally connected with the rotating groove (71), the screw column (91) is in threaded connection with the first threaded hole (23), and the diameters of the extrusion disc (7), the disc groove (22) and the rubber disc (8) are equal.

6. The handrail of claim 1, wherein: the extrusion assembly includes:

two jack (12), two jack (12) are offered respectively in the position department of the left and right sides of bedplate (1) and being close to backplate (3), set up second screw hole (41) that are linked together with jack (12) on L shape handrail (4), threaded rod (5) are installed in spiro union in second screw hole (41), and in the one end of threaded rod (5) extends to jack (12) that correspond, the one end and jack (12) grafting cooperation of threaded rod (5).

7. The handrail of claim 1, wherein: further comprises:

the two L-shaped cushions (42), two L-shaped cushions (42) are respectively fixedly installed on the side walls of two L-shaped armrests (4), two ends of each L-shaped cushion (42) are respectively located in corresponding slots (32) and through grooves (21), one end of each L-shaped cushion (42) is in plug-in fit with each slot (32), one end of each L-shaped cushion (42) is in sliding connection with each through groove (21), and each L-shaped armrest (4) is in plug-in fit with each slot (32).

8. The handrail of claim 1, wherein: further comprises:

the semicircular groove (33), the semicircular groove (33) is arranged at the top of the backboard (3);

the pillow (331) is fixedly arranged in the semicircular groove (33), and the pillow (331) is in a semicircular structure.

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