CN212788002U

CN212788002U - Armrest doctor chair with multidirectional adjustable armrests

Info

Publication number: CN212788002U
Application number: CN202021847358.5U
Authority: CN
Inventors: 廖宜俊
Original assignee: Ruiyang Technology Co ltd
Current assignee: Ruiyang Technology Co ltd
Priority date: 2020-08-28
Filing date: 2020-08-28
Publication date: 2021-03-26
Anticipated expiration: 2030-08-28

Abstract

The utility model relates to an armchair with multidirectional adjustable armrests for doctors, which comprises a chair body and two armrest components. Each armrest assembly has a lower swing arm module capable of rotating relative to the chair body, an upper swing arm rotatably connected with the lower swing arm module, and an armrest plate rotatably connected with the upper swing arm. The armrest plate can rotate from two sides of the chair body to the back of the chair body through the rotation of the rotary arm. Therefore, the position of the armrest plate has a wide adjusting range, and the armrest plate can provide proper support for the forearm, the middle shaft and the back wrist of a doctor, so that the doctor can stably carry out dental diagnosis and treatment, operation, microscope operation and other operations in various postures for a long time. In addition, the width of the utility model can be greatly reduced by rotating the armrest plate to the rear of the chair back, thereby being easy to store when not in use.

Description

Armrest doctor chair with multidirectional adjustable armrests

Technical Field

The utility model relates to an armchair with a plurality of rotational degrees of freedom at armrest positions, in particular to an armchair for medical use.

Background

When a doctor diagnoses a patient, the doctor needs to change the position and adjust the posture of the patient in cooperation with different diagnosis and treatment operations and the part of the patient needing to be diagnosed and treated. For example, when a physician is at a desk for an inquiry, interpretation of a test report, or conducting an assay, it is necessary to operate a computer or a microscope; when patients are subjected to visual inspection or auscultation, the chair needs to be slid to the position near the patients from the front of the table; when detailed examination or treatment of a particular part of the patient's body is required (e.g., a dental practitioner performing a dental rinse and a microscope assisted procedure on the patient), the chair is slid further into close proximity to the patient and the body of the practitioner may also need to be tilted forward as appropriate for the procedure. In short, in the course of diagnosis and treatment, not only the position of the chair must be changed frequently by the doctor, but also the posture of the body varies greatly according to the different diagnosis and treatment operations.

Although the existing armchairs allow a user to finely adjust the height position of the armrests and the spacing distance between the left and right armrests according to the body type, so that the arms of a doctor can obtain proper support in the sitting posture, the existing armchairs have the following defects when being used in medical occasions:

first, when a doctor actually performs a diagnosis, the posture of the body must be adjusted according to the diagnosis, so the angles and positions of the forearm, the medial axis and the back wrist of the doctor can be greatly changed for performing various types of diagnosis, and the change range is much larger than that of a normal person in an end-sitting posture. However, the armrests of the conventional armchairs are designed only for the sitting posture, so that the adjustment range of the armrests is very limited, and the armrests cannot be adjusted according to the angles and the positions of the forearm, the middle shaft and the back wrist of a doctor and provide proper support, so that the forearm, the middle shaft and the back wrist of the doctor are difficult to be stably diagnosed for a long time due to lack of proper support.

Second, the armrests on the lateral sides of the armchair increase the overall width of the chair, and therefore, when not in use, occupy a lot of space in a consulting room with limited space, which is inconvenient, and this drawback is particularly evident in dentists' offices where large medical equipment needs to be placed, making the space available in the consulting room narrow. In addition, the handrails are also easily obstructed between the physician and the patient, making it difficult for the physician to make a diagnosis close to the patient on his side.

Therefore, the prior art armchairs need to be improved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned shortcomings and drawbacks of the prior art, the present invention provides an armchair with multi-directional adjustable armrests, wherein the armrest plate has three rotational degrees of freedom and can be adjusted by a large margin to adjust the angle and position of the armrest plate, and can be adjusted by the angle and position of the forearm, middle shaft and back wrist of the physician in various medical operations and provide proper support. Meanwhile, the armrest plate can also be moved to the back of the chair back for convenient storage.

In order to achieve the above object, the utility model adopts the technical means of designing an armchair with multidirectional adjustable armrests for doctors, comprising:

a chair body is provided with

A seat;

a chair leg arranged on a bottom surface of the chair seat;

the chair back is arranged on the top surface of the chair seat and is positioned on the periphery of the rear side of the chair seat;

two handrail components, it locates this seat support to be located the relative both sides of this seat support respectively, each this handrail component has:

a lower swing arm module pivotally provided to the bottom surface of the seat and having:

an upper rotating arm end protruding from the periphery of the seat; the pivoting of the lower swing arm module can enable the end of the upper swing arm to approach or be far away from the chair back;

the two opposite ends of the upper swing arm are respectively provided with a lower swing arm end and an armrest end, and the lower swing arm end can be rotatably connected with the upper swing arm end of the lower swing arm module;

the armrest plate can be rotatably connected with the armrest end of the upper rotating arm, and the armrest plate can move to the rear side of the chair back by the pivoting of the lower rotating arm module relative to the chair seat, and is in a storage state at the moment;

the first angle fixing piece is arranged between the upper rotating arm and the lower rotating arm module and can fix the upper rotating arm at a plurality of angles relative to the lower rotating arm module;

and the second angle fixing piece is arranged between the armrest plate and the upper rotating arm and can fix the armrest plate at a plurality of angles relative to the upper rotating arm.

The utility model has the advantages that:

first, the armrest plate is connected to the seat through the upper and lower swing arm modules, and the armrest plate, the upper swing arm and the lower swing arm module can rotate, so that the armrest plate has three rotational degrees of freedom and the angle and position of the armrest plate can be adjusted greatly. Therefore, the utility model discloses a handrail board can cooperate doctor's forearm, axis and back wrist to adjust at the angle and the position of the operation of diagnosing of various different types, makes doctor's upper limbs borrow to support and obtain suitable support by leaning on handrail board, and then can diagnose stably for a long time.

Secondly, when not using, can rotate the handrail board to back of the chair rear and reduce the utility model discloses a width reduces the space that occupies by a wide margin, consequently is convenient for collect, is particularly suitable for the narrow and small clinic in space, uses like dentist's clinic. In addition, the armrest plate rotates to the rear of the chair back, so that a doctor can easily lean to the patient to make a diagnosis and treat, and can move in a narrow examination room more easily.

Further, in the aforesaid armchair with multi-directional adjustable armrests, in the storage state, the two armrest plates of the two armrest assemblies are arranged at the rear side of the chair back along a front-rear direction of the chair back; the length directions of the two armrest plates are parallel to each other, and the length directions of the two armrest plates are perpendicular to the front-back direction of the chair back.

Further, the armchair for armchair with multidirectional adjustment comprises the lower rotation arm module of each armrest assembly: a pivot pipe which is pivoted on the bottom surface of the chair seat; the pivoting pipe is provided with a horizontal section and a vertical section, and one end of the horizontal section is pivoted with the bottom surface of the chair seat; the vertical section is connected with the other end of the horizontal section and protrudes upwards from the chair seat; wherein each armrest component has an origin position; when each armrest component is positioned at the corresponding origin position, the two horizontal sections of the two pivoting pipes of the two armrest components are positioned on the same straight line; the horizontal section of each armrest component can rotate 80 to 100 degrees from the corresponding origin position towards the chair back, so that the corresponding upper rotating arm end moves to the accommodating state.

Further, the armchair for armchair with multidirectional adjustment comprises the lower rotation arm module of each armrest assembly: a pivot pipe which is pivoted on the bottom surface of the chair seat; the pivoting pipe is provided with a horizontal section and a vertical section, and one end of the horizontal section is pivoted with the bottom surface of the chair seat; the vertical section is connected with the other end of the horizontal section and protrudes upwards from the chair seat; wherein each armrest component has an origin position; when each armrest component is positioned at the corresponding origin position, the two horizontal sections of the two pivoting pipes of the two armrest components are positioned on the same straight line; wherein the horizontal segment of each armrest assembly can rotate 25 to 45 degrees away from the backrest from the corresponding origin position.

Further, the armchair for armchair with multidirectional adjustment comprises the lower rotation arm module of each armrest assembly: a pivot pipe which is pivoted on the bottom surface of the chair seat; a height adjusting rod, which can be vertically slidably inserted through the pivot tube, wherein the upper rotating arm end is the top end of the height adjusting rod; and the height-adjusting fixing structure is arranged between the pivoting pipe and the height-adjusting rod and can fix the height-adjusting rod at a plurality of positions relative to the pivoting pipe.

Furthermore, the height-adjusting rod is provided with a height-limiting groove extending up and down on the side surface, and the depth of the height-limiting groove is gradually increased towards the direction far away from the upper rotating arm end; the height-adjusting fixing structure is provided with a height fixing piece which penetrates through the pivoting pipe and penetrates through the height limiting groove and selectively and tightly abuts against a groove bottom of the height limiting groove.

Furthermore, the height-adjusting rod of the armchair for doctors with multidirectional adjusting armrests has a height-limiting groove formed on the side surface thereof and extending up and down; this heightening fixing structure has: a nut which passes through the pivoting pipe and can be relatively slidably arranged in the height limiting groove of the height adjusting rod in a penetrating way; a height fixing member which is a bolt; the height fixing piece penetrates through and is screwed with the screw cap, and selectively and tightly abuts against one groove bottom of the height limiting groove.

Furthermore, the two opposite side surfaces of the nut are respectively formed with a leaning plane, and the two leaning planes respectively lean against the two opposite side wall surfaces of the height limiting groove.

Furthermore, the height-adjusting rod of the armchair for doctors with multidirectional adjusting armrests has a height-limiting groove formed on the side surface thereof and extending up and down; the height-adjusting fixing structure is provided with a height fixing piece which penetrates through the pivoting pipe and penetrates through the height limiting groove, and the lower rotating arm module selectively and tightly abuts against the bottom of the height limiting groove and is further provided with an elastic buffer piece which is arranged in the pivoting pipe; when the height adjusting rod slides downwards to enable the height fixing piece to penetrate through the top end of the height limiting groove, the elastic buffer piece upwards abuts against the height adjusting rod.

Furthermore, in the above-mentioned armchair with multi-directional adjustable armrests, the lower swing arm end of the upper swing arm of each armrest assembly can be rotatably sleeved on the upper swing arm end of the lower swing arm module; the upper rotating arm end is formed with a ring groove; the first angle fixing piece penetrates through the upper rotating arm and penetrates through the ring groove, selectively and tightly abuts against the groove bottom of the ring groove and limits the upper rotating arm to rotate relative to the lower rotating arm module.

Furthermore, each lower swing arm module of the armchair with multi-directional adjustable armrests further has a first copper bush, which is sleeved on the upper swing arm end of the lower swing arm module; the lower swing arm end of the upper swing arm is sleeved with the first copper bushing.

Furthermore, the armchair for doctors with multidirectional adjustment armrests has a mounting column formed on the bottom surface of the armrest plate of each armrest component in a protruding manner; each armrest assembly further has a second copper bushing sleeved outside the corresponding mounting post and commonly inserted into the armrest end of the corresponding upper swing arm together with the mounting post.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the armrest base of the chair body connected to the lower swing arm module of the present invention.

Fig. 3 is an exploded view of a portion of the assembly of the present invention.

Fig. 4 is an exploded view of a portion of the lower swing arm module of the present invention.

Fig. 5 to 7 are schematic diagrams of the upward-looking operation of the present invention.

Fig. 8 and 9 are schematic diagrams illustrating the height of the armrest panel adjusted by the lower swing arm module according to the present invention, wherein fig. 9 is a schematic diagram illustrating the height-adjusting rod being lifted upward and then the nut being screwed to fix the height-adjusting rod in the adjusted position.

Fig. 10 is a schematic sectional view of the height fixing member and the nut penetrating the height limiting groove.

Description of the symbols

10 chair body

11: seat base

111 armrest base

12, chair leg

13, chair back

2: armrest assembly

20 lower rotating arm module

21 pivoting pipe

211 horizontal segment

212 pivoting end

213 vertical segment

22, height adjusting rod

221 height limiting groove

2211 side wall surface

2212 bottom of the groove

223 annular groove

23, heightening and fixing structure

231 height fixing part

232 screw cap

2321 lying plane

24 first copper bush

25 elastic buffer

26: pipe plug

27 upper rotating arm end

30, upper rotating arm

31 lower rotating arm end

32, handrail end

321 upper mounting hole

322 lower mounting hole

40 handrail plate

41 mounting column

42 second copper bush

50 first angle fixing piece

60 second angle fixing piece

L front-back direction

C is a straight line

Angle of alpha

Angle of beta

Detailed Description

The following description will further explain the technical means of the present invention to achieve the intended purpose in accordance with the drawings and the preferred embodiments of the present invention.

The technical means of the present invention to achieve the predetermined creation objectives will be further described with reference to the drawings and the preferred embodiments of the present invention.

Referring to fig. 1, 2 and 5, the armchair with multi-directional adjustable armrests of the present invention comprises a chair body 10 and two armrest assemblies 2.

The chair body 10 comprises a seat 11, a leg 12 (shown in fig. 1) and a backrest 13; the seat 11 has a front-back direction L (as shown in fig. 5), the legs 12 are disposed on a bottom surface of the seat 11, and the back 13 is disposed on a top surface of the seat 11 and is located at a rear peripheral edge of the seat 11, that is, the back is located at one side of the seat 11 along the front-back direction L. In this embodiment, the bottom surface of the seat 11 is provided with an armrest base 111, and the bottom of the legs 12 is provided with a plurality of casters, so that the chair body 10 can easily move on the ground.

The two armrest assemblies 2 are disposed on the seat 11 and located on two opposite sides of the seat 11. Each armrest assembly 2 has: a lower swing arm module 20, an upper swing arm 30, a balustrade panel 40, a first angle fixing member 50 and a second angle fixing member 60.

Referring to fig. 1, 3 and 4, the lower arm module 20 is pivoted to the bottom surface of the seat 11, and more specifically, to the armrest base 111 pivoted to the bottom surface of the seat 11. Specifically, the lower arm module 20 is substantially L-shaped, and has a pivot tube 21, an elevation rod 22, an elevation fixing structure 23, a first copper bushing 24 and an elastic buffer 25. The pivot tube 21 in this embodiment includes a horizontal section 211 and a vertical section 213 connected to each other; one end of the horizontal section 211 is a pivoting end 212, and the pivoting end 212 is pivoted with the armrest base 111; the vertical section 213 is connected to the other end of the horizontal section 211 and protrudes upward from the seat 11. The pivot tube 21 is preferably a bent tube bent into an L-shape, but the pivot tube 21 is not L-shaped or limited to a bent tube.

Referring to fig. 5 to 7, each armrest assembly 2 has an origin position; when the two armrest assemblies 2 are both located at the original positions, the two horizontal sections 211 of the two pivot pipes 21 of the two armrest assemblies 2 are located on the same straight line C (as shown in fig. 5). In the present embodiment, the horizontal segment 211 of each armrest assembly 2 can rotate by an angle α (as shown in fig. 6) from the corresponding origin position toward the seat back 13 to move the corresponding upper boom end 27 to the rear side of the seat back 13. The angle α is specifically 90 degrees, but not limited to being exactly equal to 90 degrees, and the angle α can also be between 80 and 100 degrees. In addition, the horizontal segment 211 can also rotate away from the backrest 13 by an angle β (as shown in fig. 7), wherein the angle β is specifically, but not limited to, 35 degrees, and the angle β can also be between 25 and 45 degrees. By rotating the horizontal section 211 in a direction away from the seat back 13, the position of the armrest plate 40 can be adjusted to match the posture of the user's body even when the user's body is in a forward leaning posture, so as to ensure that the upper limbs are properly supported.

Referring to fig. 3, 4, and 8-10, the height-adjusting rod 22 is slidably inserted through the vertical section 213 of the pivot tube 21. The top end of the height adjusting rod 22 is the upper rotating arm end 27 of the lower rotating arm module 20, a height limiting groove 221 extending up and down is formed on the side surface of the height adjusting rod 22, and the depth of the height limiting groove 221 is gradually increased towards the direction away from the upper rotating arm end 27 (as shown in fig. 8 and 9). More specifically, the groove bottom 2212 of the height-limiting groove 221 is a slope with a bottom end inclined toward the center of the pivot pipe 21. The top end of the height-adjusting lever 22 (i.e., the upper arm end 27) is formed with a ring groove 223 in this embodiment. The first copper bush 24 is sleeved on the top end of the height adjusting rod 22, and the first copper bush 24 and the ring groove 223 are arranged at an interval up and down, that is, the first copper bush 24 is not sleeved outside the ring groove 223.

The height adjusting fixing structure 23 is disposed between the pivot tube 21 and the height adjusting rod 22, and can fix the height adjusting rod 22 at a plurality of positions relative to the pivot tube 21. The height-adjusting fixing structure 23 has a height-fixing member 231 and a nut 232, the nut 232 penetrates through the pivot tube 21 and is slidably inserted into the height-limiting groove 221 of the height-adjusting rod 22.

In this embodiment, two opposite side surfaces of the nut 232 are respectively formed with a contact plane 2321, and the two contact planes 2321 are respectively contacted with two opposite side wall surfaces 2211 of the height-limiting groove 221, so as to prevent the height-adjusting rod 22 from rotating in the pivot tube 21 due to a lateral gap between the nut 232 and the height-limiting groove 221, and preferably, the nut 232 is a square nut, but the nut 232 is not limited thereto, and a proper gap can be maintained between the nut 232 and the side wall surface 2211.

The height fixing member 231 is specifically a bolt that penetrates the screw nut 232 and penetrates the height limiting groove 221. The height fixing member 231 can be manually screwed, so that the end part of the height fixing member tightly abuts against the groove bottom 2212 of the height limiting groove 221 and limits the height adjusting rod 22 to slide up and down relative to the pivot pipe 21; or the height fixing member 231 may be manually unscrewed to allow the height adjusting lever 22 to slide up and down.

The elastic buffer 25 is disposed in the pivot tube 21, and when the height adjusting rod 22 slides downward to make the height fixing element 231 penetrate the top end of the height limiting groove 221 (i.e. the height adjusting rod 22 has slid downward to the limit position), the elastic buffer 25 abuts against the height adjusting rod 22 upward. Therefore, even if the heightening rod 22 slides down at high speed out of control, the elastic buffer piece 25 can play a role of speed reduction at the tail end of the stroke, and the damage caused by the collision of the top side wall surface of the height limiting groove 221 with the heightening fixing structure 23 is avoided. In the embodiment, the plug 26 is forcibly pressed into the pivot tube 21 and fixed, and then the elastic buffer 25 is placed on the plug 26, so that the position of the elastic buffer 25 is fixed by the plug 26.

The structure of the lower arm module 20 is not limited to the above. The basic function of the present invention can be achieved by pivoting only one end of the lower arm module 20 to a bottom surface of the seat 11 and pivoting the lower arm module 20 to move its upper arm end 27 closer to or away from the seat back 13, for example, the lower arm module 20 can be only a bent tube (i.e. only the pivot tube 21). When the lower swing arm module 20 is a bent pipe, the first copper bushing 24 can directly fit over the upper swing arm end 27 of the bent pipe, and the lower swing arm end 31 of the upper swing arm 30 fits over the first copper bushing 24.

Referring to fig. 1 to fig. 3, two opposite ends of the upper swing arm 30 are a lower swing arm end 31 and an armrest end 32, the lower swing arm end 31 is rotatably connected to the upper swing arm end 27 of the lower swing arm module 20, and in this embodiment, the lower swing arm end 31 is rotatably sleeved on the upper swing arm end 27 of the height adjusting rod 22 and is sleeved outside the first copper bushing 24. Since the upper swing arm 30 and the height adjusting rod 22 are usually made of iron, the first copper bushing 24 can prevent dust and noise caused by the friction between the upper swing arm 30 and the height adjusting rod 22, and can increase the smoothness of rotation.

The first angle fixing member 50 is disposed between the upper arm 30 and the lower arm module 20, and can fix the upper arm 30 at a plurality of angles with respect to the lower arm module 20. In the present embodiment, the first angle fixing member 50 penetrates the upper rotating arm 30 and penetrates the ring groove 223. The first angle fixing member 50 is specifically a bolt that can be manually tightened to make its end abut against the bottom of the ring groove 223 and limit the rotation of the upper rotating arm 30 relative to the lower rotating arm module 20, thereby fixing the upper rotating arm 30 at a plurality of angles relative to the lower rotating arm module 20; or the first angle fixing member 50 may be manually unscrewed so that the upper rotating arm 30 can freely rotate.

Referring to fig. 2, 3, 5 to 7, the armrest plate 40 is rotatably connected to the armrest end 32 of the upper swing arm 30, and the lower swing arm module 20 pivots relative to the seat 11 to enable the armrest plate 40 to move to the rear side of the backrest 13 (i.e. the side of the backrest 13 relative to the seat 11), which is a storage state. Specifically, the upper and lower surfaces of the armrest end 32 of the upper boom 30 are recessed to form an upper mounting hole 321 and a lower mounting hole 322, respectively, and the upper mounting hole 321 and the lower mounting hole 322 are communicated with each other. An installation post 41 is formed on the bottom surface of the armrest plate 40 in a protruding manner, a second copper bushing 42 is sleeved outside the installation post 41 and is inserted into the upper installation hole 321 together with the installation post 41, and the armrest plate 40 is easily rotated relative to the upper swing arm 30 by the second copper bushing 42.

The second angle fixing member 60 is provided between the handle plate 40 and the upper swing arm 30, and can fix the handle plate 40 at a plurality of angles with respect to the upper swing arm 30. Specifically, the second angle fixing member 60 is inserted into the lower mounting hole 322 of the upper arm 30 and screwed to the mounting post 41, and the armrest plate 40 is fixed at a plurality of angles with respect to the upper arm 30 by manually tightening the second angle fixing member 60 so that the armrest plate 40 is held and fixed by the second angle fixing member 60 to the upper arm 30.

The utility model discloses when using, the doctor can rotate down spiral arm module 20, upward spiral arm 30 and handrail board 40 according to the health gesture and adjust horizontal position and the angle of handrail board 40, simultaneously with the height of heightening pole 22 adjustment handrail board 40, make handrail board 40 can provide suitable support to forearm, axis and back wrist. After the adjustment is completed, the upper swing arm 30, the handle plate 40, and the height adjusting bar 22 are fixed at the adjusted positions by the

angle fixing members

50 and 60 and the height fixing member 231, respectively, for convenient use.

When the doctor does not want to use the present invention (for example, when the doctor must make a diagnosis in a standing posture), the present invention can be adjusted to the aforementioned storage state (as shown in fig. 6). When accomodating the state, two handrail components 2's two handrail boards 40 are arranged in the rear side of back of the chair 13 along the fore-and-aft direction L of the back of the chair 13 better, and two handrail boards 40's length direction is parallel to each other simultaneously to two handrail boards's length direction perpendicular to back of the chair 13's fore-and-aft direction L also can further make two handrail boards 40 paste each other even and lean on, borrow this will the utility model discloses a width reduces to minimum to reduce the space that occupies, make things convenient for in narrow and small spaces such as dentistry workshop very much and use. Furthermore, accomodate under the state the utility model discloses because of the width is less, also be favorable to removing in narrow and small space to also be convenient for when the doctor leans on one's side and presses close to the patient. The storage state of the present invention is not limited to this, and it is only necessary to pivot the lower swing arm module 20 relative to the seat 11 to move the armrest plate 40 to the rear side of the seat back 13.

Other advantages and preferred embodiments of the present invention are as follows:

first, the nut 232 is inserted into the height-limiting groove 221 of the height-adjusting rod 22, and the height-fixing member 231 is inserted into the screw nut 232, so that the external thread of the height-fixing member 231 is prevented from directly contacting the sidewall surface of the height-limiting groove 221, thereby preventing the screw thread of the height-fixing member 231 from being damaged, and improving durability. However, it is not limited thereto, the nut 232 may be omitted, and the height fixing member 231 directly penetrates the pivot tube 21, so that the height fixing member 231 can still function to limit the vertical sliding of the height adjusting rod 22.

Secondly, by designing the depth of the groove bottom 2212 of the height limiting groove 221 to be gradually increased towards the direction far away from the upper rotating arm end 27, the height fixing piece 231 can limit the height adjusting rod 22 to slide downwards as long as being attached to the groove bottom 2212, so that even if the height fixing piece 231 is accidentally loosened, the height adjusting rod 22 cannot suddenly slide downwards when bearing the downward pressing force, and the use is safer and more reliable.

Third, compare and directly make first angle mounting 50 tightly support the outer anchor ring of upper swing arm end 27 in general design, the utility model discloses borrow by setting up ring groove 223 and make first angle mounting 50 tightly support the tank bottom of ring groove 223, because of the tank bottom of ring groove 223 can not contact lower swing arm module 20, even so the tank bottom of ring groove 223 produces indentation or wearing and tearing because of receiving first angle mounting 50 to oppress, upper swing arm 30 still can be slided and smoothly relative lower swing arm module 20 and rotate.

To sum up, the utility model discloses an all rotatable angle of adjustment of arm module 20, last spiral arm 30 and handrail board 40 under handrail component 2, borrow this, handrail board 40's position has broad adjustment range, can provide suitable support to doctor's forearm, axis and back wrist. Simultaneously, handrail board 40 also can be followed the both sides rotation of seat support 11 to the rear of back of the chair 13 to reduce the width, make the utility model discloses it is changeed in accomodating.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the equivalent embodiment without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.

Claims

1. An armchair for medical practitioners having multi-way adjustable armrests, comprising:

a chair body is provided with

A seat;

a chair leg arranged on a bottom surface of the chair seat;

2. The chair of claim 1, wherein in the stowed position, the armrests of the armrests are disposed behind the backrest in a front-to-rear direction of the backrest; the length directions of the two armrest plates are parallel to each other, and the length directions of the two armrest plates are perpendicular to the front-back direction of the chair back.

3. The armchair of claim 1 or 2, wherein said lower arm module of each armrest assembly has:

a pivot pipe which is pivoted on the bottom surface of the chair seat; the pivoting pipe is provided with a horizontal section and a vertical section, and one end of the horizontal section is pivoted with the bottom surface of the chair seat; the vertical section is connected with the other end of the horizontal section and protrudes upwards from the chair seat;

wherein each armrest component has an origin position; when each armrest component is positioned at the corresponding origin position, the two horizontal sections of the two pivoting pipes of the two armrest components are positioned on the same straight line;

the horizontal section of each armrest component can rotate 80 to 100 degrees from the corresponding origin position towards the chair back, so that the corresponding upper rotating arm end moves to the accommodating state.

4. The armchair of claim 1 or 2, wherein said lower arm module of each armrest assembly has:

wherein the horizontal segment of each armrest assembly can rotate 25 to 45 degrees away from the backrest from the corresponding origin position.

5. The armchair of claim 1 or 2, wherein said lower arm module of each armrest assembly has:

a pivot pipe which is pivoted on the bottom surface of the chair seat;

a height adjusting rod, which can be vertically slidably inserted through the pivot tube, wherein the upper rotating arm end is the top end of the height adjusting rod;

and the height-adjusting fixing structure is arranged between the pivoting pipe and the height-adjusting rod and can fix the height-adjusting rod at a plurality of positions relative to the pivoting pipe.

6. The armchair of claim 5, wherein:

a height limiting groove extending up and down is formed on the side surface of the height adjusting rod, and the depth of the height limiting groove is gradually increased towards the direction far away from the end of the upper rotary arm;

the height-adjusting fixing structure is provided with a height fixing piece which penetrates through the pivoting pipe and penetrates through the height limiting groove and selectively and tightly abuts against a groove bottom of the height limiting groove.

7. The armchair of claim 5, wherein:

a height limiting groove extending up and down is formed on the side surface of the height adjusting rod;

this heightening fixing structure has:

a nut which passes through the pivoting pipe and can be relatively slidably arranged in the height limiting groove of the height adjusting rod in a penetrating way;

a height fixing member which is a bolt; the height fixing piece penetrates through and is screwed with the screw cap, and selectively and tightly abuts against one groove bottom of the height limiting groove.

8. The armchair of claim 7, wherein said nut has two opposite side surfaces respectively formed with a flat surface, said flat surfaces respectively abutting against two opposite side walls of said height-limiting groove.

9. The armchair of claim 5, wherein:

the height-adjusting fixing structure is provided with a height fixing piece which penetrates through the pivoting pipe and penetrates through the height limiting groove and selectively and tightly abuts against a groove bottom of the height limiting groove

The lower rotating arm module is further provided with an elastic buffer piece which is arranged in the pivoting pipe;

when the height adjusting rod slides downwards to enable the height fixing piece to penetrate through the top end of the height limiting groove, the elastic buffer piece upwards abuts against the height adjusting rod.

10. The armchair of claim 1 or 2, wherein said lower arm end of said upper arm of each armrest assembly is rotatably sleeved on said upper arm end of said lower arm module; the upper rotating arm end is formed with a ring groove; the first angle fixing piece penetrates through the upper rotating arm and penetrates through the ring groove, selectively and tightly abuts against the groove bottom of the ring groove and limits the upper rotating arm to rotate relative to the lower rotating arm module.