CN209907473U

CN209907473U - Adjustable armrest seat

Info

Publication number: CN209907473U
Application number: CN201920431835.0U
Authority: CN
Inventors: 秦志强; 邹毅; 周少斌; 韦卓澜
Original assignee: Liuzhou Hongjia Machinery Co Ltd
Current assignee: Liuzhou Hongjia Machinery Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2020-01-07
Anticipated expiration: 2029-03-29

Abstract

The utility model relates to the technical field of chair armrests, in particular to an adjustable armrest seat, which comprises a fixed supporting seat and a movable supporting shell; the fixed supporting seat comprises a base, a supporting cylinder and a clamping piece, the supporting cylinder is installed on the base, a first spring is arranged on the supporting cylinder, one end of the first spring is connected with the inside of the supporting cylinder, and the other end of the first spring extends out of the outer side of the supporting cylinder; a clamping piece is arranged on the supporting cylinder, and a plurality of clamping holes are formed in the clamping piece; the movable supporting shell is of a cylindrical structure and is provided with a fixed rod; the movable supporting shell is sleeved on the fixed supporting seat, the lower end of the fixed rod extends into the supporting cylinder, the upper side surface of the first spring is connected with the upper side surface in the movable supporting shell, and the movable supporting shell can move downwards relative to the fixed supporting seat; the movable supporting shell is provided with an adjusting piece, and the adjusting piece is used for buckling or loosening the clamping hole so as to realize that the movable supporting shell is fixed or moves up and down relative to the fixed supporting seat. The utility model discloses the function of adjusting from top to bottom, extensive applicability is general, and the practicality is strong.

Description

Adjustable armrest seat

[ technical field ] A method for producing a semiconductor device

The utility model relates to a armrest technical field, in particular to adjustable armrest seat.

[ background of the invention ]

The prior loader control box is generally provided with the handrail seat, so that people can place arms on the handrail seat to make people feel more comfortable when sitting, however, the prior control box handrail seat is generally fixed and not adjustable, and cannot be adjusted up and down and left and right, so that the requirements are difficult to meet when people with different heights use the conventional handrail seat, and the prior handrail seat is only produced according to the general height, and some users feel inconvenient.

[ Utility model ] content

In order to solve the problem, an object of the utility model is to provide an adjustable armrest seat, the function of adjusting about this adjustable armrest seat realization, extensive applicability is general, and the practicality is strong.

In order to achieve the above purpose, the utility model adopts the technical proposal that:

an adjustable armrest seat comprises a fixed supporting seat and a movable supporting shell; the fixed supporting seat comprises a base, a supporting cylinder and a clamping piece, the supporting cylinder is mounted on the upper side face of the base, and a cylinder opening of the supporting cylinder faces upwards; the supporting cylinder is provided with a first spring, the first spring is arranged along the cylinder depth direction of the supporting cylinder, one end of the first spring is connected with the inside of the supporting cylinder, the other end of the first spring extends out of the outer side of the supporting cylinder through a cylinder opening of the supporting cylinder, and the outer diameter of the first spring is equal to the inner diameter of the supporting cylinder; the clamping piece is arranged on the outer side surface of the supporting cylinder, is not higher than the upper side surface of the first spring, and is provided with a plurality of clamping holes which are arranged along the vertical direction of the clamping piece;

the movable supporting shell is of a cylindrical structure, a cylinder opening of the movable supporting shell faces downwards, a fixed rod is arranged on the movable supporting shell, the upper end of the fixed rod extends into the movable supporting shell and is fixedly connected with the upper side face of the inner part of the movable supporting shell, and the lower end of the fixed rod points downwards; when the movable supporting shell is sleeved on the fixed supporting seat, the lower end of the fixed rod is over against the first spring, penetrates through the inner side of the first spring and is in sliding connection with the first spring, the fixed rod slides along the up-down direction of the first spring, and the radial size of the fixed rod is equal to the inner diameter of the first spring; when the fixed rod slides until the lower end of the fixed rod extends into the supporting cylinder, the first spring extends into the movable supporting shell, the upper side surface of the first spring is in contact connection with the upper side surface of the movable supporting shell, and the movable supporting shell overcomes the elastic force of the first spring and moves downwards relative to the fixed supporting seat until the lower end of the fixed rod slides to the bottom of the supporting cylinder; the movable supporting shell is further provided with an adjusting piece, and the adjusting piece is used for buckling or loosening the clamping hole so as to fix or move up and down the movable supporting shell relative to the fixed supporting seat.

Furthermore, the supporting cylinder and the clamping piece are integrally formed, the heights of the supporting cylinder and the clamping piece are equal, and the upper end part and the lower end part of the supporting cylinder and the clamping piece are respectively flush with each other; the cylinder depth of the supporting cylinder, the cylinder depth of the movable supporting shell and the length of the fixing rod are equal, and the natural length of the first spring is twice as large as that of the fixing rod.

Furthermore, the upper side surface of the first spring is fixedly connected with the upper side surface inside the movable supporting shell.

Furthermore, the clamping piece is of a U-shaped groove structure, the length direction of the U-shaped groove of the clamping piece is parallel to the vertical direction of the supporting cylinder, the clamping piece is positioned on the right side of the supporting cylinder, and the U-shaped opening of the clamping piece faces the side of the supporting cylinder; one end of the clamping piece along the U-shaped direction is connected with the right end of the supporting cylinder, the other end of the clamping piece faces the right end of the supporting cylinder and is arranged at intervals with the supporting cylinder, and a plurality of clamping holes are arranged on the end face of the end part to enable the end part to be in a tooth-shaped structure;

after the movable supporting shell is sleeved on the fixed supporting seat, the left side surface inside the movable supporting shell is contacted with the left side surface of the supporting cylinder, the right side surface is contacted with the right side surface of the clamping piece, the rear side surface is contacted with the supporting cylinder or/and the rear side surface of the clamping piece, and the front side surface is contacted with the front side surface of the supporting cylinder but is arranged at intervals with the front side surface of the clamping piece; the screens hole is installed on the one end tip of screens piece leading flank.

Furthermore, the adjusting part comprises a handle, a push rod, a cam, a second spring and a clamping clamp, the handle is installed at the upper end of the front side surface of the movable supporting shell and is of an L-shaped structure, one end of the handle vertically penetrates through the front side surface of the movable supporting shell to extend into the movable supporting shell and is vertically connected with a connecting rod, the end of the handle is rotatably connected with the movable supporting shell, a torsion spring is sleeved on the end of the handle, two ends of the torsion spring are fixedly connected with the handle and the movable supporting shell respectively, and when the torsion spring is in a natural state, the other end of the handle and the connecting rod are in a horizontal state; a through hole is formed in one end, away from the handle, of the connecting rod, the push rod is hung at the through hole, one end of the push rod is hung at the through hole, and the other end of the push rod points to the lower end of the movable supporting shell and is connected with the cam; the cam is arranged at the lower end of the front side surface in the movable supporting shell and is rotationally connected with the movable supporting shell through a rotating shaft, a through hole is formed in one end of the cam, one end, away from the connecting rod, of the push rod is hung at the through hole, the other end of the cam is connected with one end of the second spring, and the other end of the second spring is fixedly connected with the front side surface in the movable supporting shell; one end of the handle extending into the movable supporting shell, the connecting rod, the push rod, the cam and the second spring are all positioned between the front side surface of the movable supporting shell and the front side surface of the clamping piece; install on the cam the screens pincers, the cam is connected to screens pincers one end, and the other end is calliper end, and this end is towards screens hole place side, the screens pincers keep away from the screens piece when the cam rotates in order to loosen the screens hole to be close to the screens piece when the cam resets and with lock joint screens hole.

Furthermore, an opening for communicating the inner cavity of the movable support shell is formed in the front side surface of the movable support shell, a hanging rod is arranged at the opening, one end of the hanging rod is fixedly connected with the opening, the other end of the hanging rod is arranged at a distance from the movable support shell, and the hanging rod and the opening are positioned on the same plane; one end of the second spring is hung on the cam, and the other end of the second spring is hung on the hanging rod.

Furthermore, the adjustable armrest seat also comprises an armrest support, wherein the armrest support is arranged on the upper side surface of the movable support shell in a sliding manner and slides left and right relative to the movable support shell; a plurality of clamping grooves are formed in the side surface, facing the upper side surface of the movable supporting shell, of the armrest support and are arranged at intervals in the left and right directions of the armrest support; the constant head tank has been seted up to the side of going up of activity support shell, be equipped with third spring and screens ball on the constant head tank, the third spring is located the constant head tank, and its groove depth direction along the constant head tank sets up, and the inside of constant head tank is connected firmly to its one end, and the directional constant head tank notch of the other end just links firmly the screens ball, the one end of screens ball is located the constant head tank, and the other end passes through the constant head tank notch and protrudes the constant head tank outside, the outer one end size of screens ball protrusion constant head tank is less than half of screens ball size, its with the size of a dimension looks adaptation of draw-in groove, the handrail holds in the palm relative activity support shell horizontal slip's in-process, the screens ball is impressed in the constant head tank or.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

1. the utility model discloses in, fixed bolster fixed mounting is on external seat, and the activity support shell cover is established and is slided from top to bottom on fixed bolster and relative fixed bolster. The utility model can realize the downward sliding of the movable supporting shell relative to the fixed supporting seat through the arrangement of the first spring, can avoid the swinging of the first spring through the arrangement of the fixed rod and the supporting cylinder, and can avoid the left and right or front and back swinging of the movable supporting shell relative to the fixed supporting seat after the fixed rod extends into the supporting cylinder, thereby realizing the up and down sliding of the movable supporting shell relative to the fixed supporting seat; through the setting to screens hole and regulating part, can realize that the regulating part is to the lock joint in screens hole or loosen to it is fixed or reciprocate to realize the relative fixed supporting seat of activity supporting shell. The utility model discloses the function of adjusting about can realizing, extensive applicability is general, and the practicality is strong.

2. The utility model discloses in, through the setting to handrail support, draw-in groove, constant head tank, third spring and screens ball, can realize that the handrail holds in the palm effect that removes about relative activity support shell, the person's of facilitating the use's use.

[ description of the drawings ]

Fig. 1 is a sectional view of the adjustable armrest seat of the present invention.

Fig. 2 is a perspective view of the fixing support seat of the present invention.

Fig. 3 is a sectional view of the movable supporting shell of the present invention after moving.

Fig. 4 is a front view of the adjustable armrest seat of the present invention.

Fig. 5 is a structural section view of the adjustable armrest seat body armrest support of the present invention.

In the main element symbol explanatory figures: 1. fixing the supporting seat; 11. a base; 12. a support cylinder; 13. a clamping piece; 131. a position clamping hole; 2. a movable support housing; 3. a first spring; 4. fixing the rod; 5. a handle; 6. a push rod; 7. a cam; 71. a rotating shaft; 8. a second spring; 9. a connecting rod; 10. an opening; 20. a hanging rod; 30. a handrail support; 40. a card slot; 50. positioning a groove; 60. a third spring; 70. the screens ball.

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

[ detailed description ] embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The drawings are only for purposes of illustration and are not intended to be limiting, certain elements of the drawings may be omitted, enlarged or reduced to better illustrate the embodiments of the present invention, and do not represent the size of the actual product, and it is understood that some well-known structures, elements and descriptions thereof in the drawings may be omitted for persons skilled in the art.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 and 2, an adjustable armrest seat includes a fixed support seat 1 and a movable support shell 2; the fixed supporting seat 1 comprises a base 11, a supporting cylinder 12 and a clamping piece 13, wherein the supporting cylinder 12 is installed on the upper side surface of the base 11, and the cylinder opening of the supporting cylinder 12 faces upwards; the first spring 3 is arranged on the supporting cylinder 12, the first spring 3 is arranged along the cylinder depth direction of the supporting cylinder 12, one end of the first spring 3 is connected with the inside of the supporting cylinder 12, the other end of the first spring extends out of the outer side of the supporting cylinder 12 through the cylinder opening of the supporting cylinder 12, the length of the first spring 3 in a natural state is twice of the cylinder depth of the supporting cylinder 12, and the length of the first spring extending out of the outer side of the supporting cylinder 12 is the cylinder depth of the supporting cylinder 12; the outer diameter of the first spring 3 is equal to the inner diameter of the support cylinder 12, and the arrangement can prevent the first spring 3 from swinging in the support cylinder 12. The outer side face of the supporting cylinder 12 is provided with the clamping piece 13, the clamping piece 13 is not higher than the upper side face of the first spring 3, a plurality of clamping holes 131 are formed in the clamping piece 13, and the plurality of clamping holes 131 are arranged along the vertical direction of the clamping piece 13. Specifically, the blocking member 13 is a U-shaped groove structure, the length direction of the U-shaped groove is parallel to the up-down direction of the support cylinder 12, that is, the upper side and the lower side of the blocking member 13 are both U-shaped structures, the blocking member 13 is located on the right side of the support cylinder 12, and the U-shaped opening of the blocking member faces the side of the support cylinder 12; the clamping piece 13 is connected with the right end of the supporting cylinder 12 along one end of the U-shaped direction, the other end of the clamping piece faces the right end of the supporting cylinder 12 and is arranged at an interval with the right end of the supporting cylinder 12, and the end face of the end part is provided with a plurality of clamping holes 131 which enable the end part to be in a tooth-shaped structure. The utility model discloses in, support a 12 and screens piece 13 integrated into one piece, its height between them equals, and its both ends tip flushes each other about both of them respectively, promptly, the side of going up of supporting a 12 flushes with the side of going up of screens piece 13, and the downside of supporting a 12 flushes with the downside of screens piece 13.

The movable supporting shell 2 is of a cylindrical structure, the cylinder opening of the movable supporting shell faces downwards, a fixed rod 4 is arranged on the movable supporting shell 2, the upper end of the fixed rod 4 extends into the movable supporting shell 2 and is fixedly connected with the upper side face of the inner part of the movable supporting shell 2, and the lower end of the fixed rod 4 points downwards; the utility model discloses in, the section of thick bamboo of a support section of thick bamboo 12 is dark, the section of thick bamboo of activity support shell 2 is dark and the length size of dead lever 4 all equals. When the movable supporting shell 2 is sleeved on the fixed supporting seat 1, the lower end of the fixed rod 4 is opposite to the first spring 3, penetrates through the inner side of the first spring 3 and is in sliding connection with the first spring 3, the fixed rod slides along the up-down direction of the first spring 3, and the radial size of the fixed rod 4 is equal to the inner diameter of the first spring 3. When the fixed rod 4 slides along the first spring 3 until the lower end of the fixed rod 4 extends into the supporting cylinder 12, the first spring 3 positioned in the supporting cylinder 12 is clamped between the supporting cylinder 12 and the fixed rod 4, so that the first spring 3 cannot swing left and right, the stability of the first spring 3 is enhanced, and at the moment, the movable supporting shell 2 cannot move left and right relative to the fixed supporting seat 1, and the stability of the movable supporting shell 2 moving up and down relative to the fixed supporting seat 1 is enhanced; the first spring 3 located outside the support cylinder 12 extends into the movable support shell 2, and the upper side surface of the first spring is in contact connection with the upper side surface inside the movable support shell 2, further, the upper side surface of the first spring 3 is fixedly connected with the upper side surface inside the movable support shell 2, so that the movable support shell 2 is prevented from being separated from the fixed support base 1. After the movable supporting shell 2 is sleeved on the fixed supporting seat 1, the movable supporting shell overcomes the elasticity of the first spring 3 and moves downwards relative to the fixed supporting seat 1 until the lower end of the fixed rod 4 slides to the bottom of the supporting cylinder 12, and after the movable supporting shell 2 is sleeved on the fixed supporting seat 1, the left side surface inside the movable supporting shell 2 is contacted with the left side surface of the supporting cylinder 12, the right side surface is contacted with the right side surface of the clamping piece 13, the rear side surface is contacted with the supporting cylinder 12 or/and the rear side surface of the clamping piece 13, the front side surface is contacted with the front side surface of the supporting cylinder 12, but is arranged at intervals with the front side surface of the clamping piece 13; the locking hole 131 is installed at one end of the front side of the locking member 13. The utility model discloses in, through foretell setting, can realize the activity support shell 2 stabilizes relative fixed support seat 1 and reciprocates.

Referring to fig. 1, an adjusting member is further installed on the movable supporting shell 2, and the adjusting member is used for fastening or releasing the position-locking hole 131 to fix or move the movable supporting shell 2 up and down relative to the fixed supporting seat 1. Concretely, the regulating part includes a handle 5, a push rod 6, a cam 7, a second spring 8 and a screens pincers, handle 5 is installed in the upper end of the 2 leading flanks of activity support shell, and it is L type structure, the leading flank that the one end of handle 5 passed activity support shell 2 perpendicularly stretches into inside the activity support shell 2, and connects a connecting rod 9 perpendicularly, this end and the activity of handle 5 support shell 2 swivelling joint, and this of handle 5 serve the cover and be equipped with a torsional spring, the both ends of torsional spring link firmly respectively handle 5 and activity support shell 2, when the torsional spring was under natural state, the one end that handle 5 was located the activity support shell 2 outside and connecting rod 9 all were the horizontality. That is, the user rotates can drive behind the handle 5 the connecting rod 9 rotates, nevertheless releases behind the handle 5, handle 5 and connecting rod 9 are in can resume original condition under the effect of torsional spring. An opening is formed in one end, far away from the handle 5, of the connecting rod 9, the push rod 6 is hung at the opening, one end of the push rod 6 is hung at the opening, the other end of the push rod points to the lower end of the movable supporting shell 2 and is connected with the cam 7. The cam 7 is installed at the lower end of the front side surface inside the movable supporting shell 2 and is rotatably connected with the movable supporting shell 2 through a rotating shaft 71, and the rotating surface of the cam 7 is parallel to the front side surface of the movable supporting shell 2. A through hole is formed in one end of the cam 7, one end, far away from the connecting rod 9, of the push rod 6 is hung at the through hole, the other end of the cam 7 is connected with one end of the second spring 8, and the other end of the second spring 8 is fixedly connected with the front side face inside the movable supporting shell 2. Through foretell setting, it is rotatory when the user handle 5 and drive connecting rod 9 rotates the back, connecting rod 9 can drive push rod 6 removes, thereby push rod 6 can drive cam 7 rotates, when the user releases drive handle 5 torsional spring and second spring 8's effect down, handle 5, connecting rod 9, push rod 6 and cam 7 homoenergetic resume to home position. One end of the handle 5 extending into the movable supporting shell 2, the connecting rod 9, the push rod 6, the cam 7 and the second spring 8 are all positioned between the front side surface of the movable supporting shell 2 and the front side surface of the clamping piece 13, and the movable supporting shell 2 is not influenced to move up and down relative to the fixed supporting seat 1. The clamping pincers are mounted on the cam 7, one end of each clamping pincers is connected with the cam 7, the other end of each clamping pincers is a caliper end, the caliper end faces the side of the clamping hole 131, the clamping pincers are far away from the clamping piece 13 when the cam 7 rotates so as to loosen the clamping hole 131, and the clamping pincers are close to the clamping piece 13 when the cam 7 resets so as to lock the clamping hole 131. Therefore, please refer to fig. 3, when the user uses the present invention, the handle 5 is rotated first, the cam 7 is driven by the connecting rod 9 and the push rod 6 to rotate, the rotation of the cam 7 causes the clamping pincers on the cam to break away from the clamping hole 131, at this moment, the movable supporting shell 2 can move up and down relative to the fixed supporting seat 1 to adjust the height of the armrest, after the height is determined, the user can release the handle 5, under the action of the torsion spring and the second spring 8, the handle 5, the connecting rod 9, the push rod 6, the cam 7 and the clamping pincers reset, the clamping pincers are fastened on the clamping hole 131, at this moment, the movable supporting shell 2 is fixed relative to the fixed supporting seat 1, and the height adjustment operation of the armrest is completed. The utility model discloses an extensive applicability is general, and the practicality is strong.

Referring to fig. 4, in the present invention, further, an opening 10 is disposed on the front side of the movable supporting shell 2 to communicate the inner cavity of the movable supporting shell, a hanging rod 20 is disposed at the opening 10, one end of the hanging rod 20 is fixedly connected to the opening 10, the other end of the hanging rod 20 is spaced apart from the movable supporting shell 2, and the hanging rod 20 and the opening 10 are located on the same plane. One end of the second spring 8 is hung on the cam 7, and the other end of the second spring 8 is hung on the hanging rod 20, so that the second spring 8 can be detached from the movable supporting shell 2 and the cam 7, and the second spring 8 is convenient to replace.

Referring to fig. 5, in the present invention, further, the adjustable armrest seat further includes an armrest support 30, the armrest support 30 is slidably mounted on the upper side of the movable support housing 2, and slides left and right relative to the movable support housing 2. The handrail support 30 is provided with a plurality of clamping grooves 40 on the side surface facing the upper side surface of the movable supporting shell 2, and the plurality of clamping grooves 40 are arranged at intervals along the left and right directions of the handrail support 30. A positioning groove 50 is formed on the upper side surface of the movable support shell 2, the positioning groove 50 is opposite to one clamping groove 40, a third spring 60 and a clamping ball 70 are arranged on the positioning groove 50, the third spring 60 is positioned in the positioning groove 50 and is arranged along the groove depth direction of the positioning groove 50, one end of the third spring is fixedly connected with the inside of the positioning groove 50, the other end of the third spring points to the notch of the positioning groove 50 and is fixedly connected with the clamping ball 70, one end of the clamping ball 70 is positioned in the positioning groove 50, the other end of the clamping ball 70 protrudes out of the positioning groove 50 through the notch of the positioning groove 50, the size of one end of the clamping ball 70 protruding out of the positioning groove 50 is smaller than half of the size of the clamping ball 70, the size of one end of the clamping ball 70 protruding out of the positioning groove 50 is matched with the size of the clamping groove 40, the clamping ball 70 is opposite to one clamping groove 40, and in the, the detent ball 70 is pressed into the detent 50 or ejected into a detent 40 on the armrest support 30. When the position-locking ball 70 is ejected out of the positioning groove 50 and enters the clamping groove 40, the armrest support 30 can still keep fixed relative to the movable support shell 2 under the action of small external force, and when the armrest support 30 is under the action of large external force, the armrest support 30 can press the position-locking ball 70 into the positioning groove 50 and move left and right relative to the movable support shell 2, so that the position of the armrest support 30 can be adjusted left and right, and the use of a user is facilitated.

The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.

Claims

1. An adjustable armrest seat comprises a fixed supporting seat and a movable supporting shell; the method is characterized in that: the fixed supporting seat comprises a base, a supporting cylinder and a clamping piece, the supporting cylinder is mounted on the upper side face of the base, and a cylinder opening of the supporting cylinder faces upwards; the supporting cylinder is provided with a first spring, the first spring is arranged along the cylinder depth direction of the supporting cylinder, one end of the first spring is connected with the inside of the supporting cylinder, the other end of the first spring extends out of the outer side of the supporting cylinder through a cylinder opening of the supporting cylinder, and the outer diameter of the first spring is equal to the inner diameter of the supporting cylinder; the clamping piece is arranged on the outer side surface of the supporting cylinder, is not higher than the upper side surface of the first spring, and is provided with a plurality of clamping holes which are arranged along the vertical direction of the clamping piece;

2. An adjustable armrest seat according to claim 1, wherein: the supporting cylinder and the clamping piece are integrally formed, the supporting cylinder and the clamping piece are equal in height, and the upper end and the lower end of each of the supporting cylinder and the clamping piece are flush with each other; the cylinder depth of the supporting cylinder, the cylinder depth of the movable supporting shell and the length of the fixing rod are equal, and the natural length of the first spring is twice as large as that of the fixing rod.

3. An adjustable armrest seat according to claim 1, wherein: the upper side surface of the first spring is fixedly connected with the upper side surface in the movable supporting shell.

4. An adjustable armrest seat according to claim 1, wherein: the clamping piece is of a U-shaped groove structure, the length direction of the U-shaped groove of the clamping piece is parallel to the up-down direction of the supporting cylinder, the clamping piece is positioned on the right side of the supporting cylinder, and the U-shaped opening of the clamping piece faces the side of the supporting cylinder; one end of the clamping piece along the U-shaped direction is connected with the right end of the supporting cylinder, the other end of the clamping piece faces the right end of the supporting cylinder and is arranged at intervals with the supporting cylinder, and a plurality of clamping holes are arranged on the end face of the end part to enable the end part to be in a tooth-shaped structure;

5. An adjustable armrest seat according to claim 4, wherein: the adjusting part comprises a handle, a push rod, a cam, a second spring and clamping pincers, the handle is installed at the upper end of the front side face of the movable supporting shell and is of an L-shaped structure, one end of the handle vertically penetrates through the front side face of the movable supporting shell to extend into the movable supporting shell and is vertically connected with a connecting rod, the end of the handle is rotatably connected with the movable supporting shell, a torsion spring is sleeved on the end of the handle, the two ends of the torsion spring are fixedly connected with the handle and the movable supporting shell respectively, and when the torsion spring is in a natural state, the other end of the handle and the connecting rod are in a horizontal state; a through hole is formed in one end, away from the handle, of the connecting rod, the push rod is hung at the through hole, one end of the push rod is hung at the through hole, and the other end of the push rod points to the lower end of the movable supporting shell and is connected with the cam; the cam is arranged at the lower end of the front side surface in the movable supporting shell and is rotationally connected with the movable supporting shell through a rotating shaft, a through hole is formed in one end of the cam, one end, away from the connecting rod, of the push rod is hung at the through hole, the other end of the cam is connected with one end of the second spring, and the other end of the second spring is fixedly connected with the front side surface in the movable supporting shell; one end of the handle extending into the movable supporting shell, the connecting rod, the push rod, the cam and the second spring are all positioned between the front side surface of the movable supporting shell and the front side surface of the clamping piece; install on the cam the screens pincers, the cam is connected to screens pincers one end, and the other end is calliper end, and this end is towards screens hole place side, the screens pincers keep away from the screens piece when the cam rotates in order to loosen the screens hole to be close to the screens piece when the cam resets and with lock joint screens hole.

6. An adjustable armrest seat according to claim 5, wherein: an opening for communicating the inner cavity of the movable supporting shell is formed in the front side surface of the movable supporting shell, a hanging rod is arranged at the opening, one end of the hanging rod is fixedly connected with the opening, the other end of the hanging rod is arranged at a distance from the movable supporting shell, and the hanging rod and the opening are located on the same plane; one end of the second spring is hung on the cam, and the other end of the second spring is hung on the hanging rod.

7. An adjustable armrest seat according to claim 1, wherein: the handrail support is arranged on the upper side surface of the movable supporting shell in a sliding manner and slides left and right relative to the movable supporting shell; a plurality of clamping grooves are formed in the side surface, facing the upper side surface of the movable supporting shell, of the armrest support and are arranged at intervals in the left and right directions of the armrest support; the constant head tank has been seted up to the side of going up of activity support shell, be equipped with third spring and screens ball on the constant head tank, the third spring is located the constant head tank, and its groove depth direction along the constant head tank sets up, and the inside of constant head tank is connected firmly to its one end, and the directional constant head tank notch of the other end just links firmly the screens ball, the one end of screens ball is located the constant head tank, and the other end passes through the constant head tank notch and protrudes the constant head tank outside, the outer one end size of screens ball protrusion constant head tank is less than half of screens ball size, its with the size of a dimension looks adaptation of draw-in groove, the handrail holds in the palm relative activity support shell horizontal slip's in-process, the screens ball is impressed in the constant head tank or.