CN116370111A

CN116370111A - Armrest-adjustable doctor seat

Info

Publication number: CN116370111A
Application number: CN202310332501.9A
Authority: CN
Inventors: 陈宇豪; 杨楚
Original assignee: Kanghui Medical Technology Suzhou Co ltd
Current assignee: Kanghui Medical Technology Suzhou Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2023-07-04
Also published as: CN113907900B; CN116370110A; CN113907900A

Abstract

The invention discloses an armrest-adjustable doctor seat, which comprises a seat, armrests and travelling wheel assemblies, wherein the armrests are positioned on the left side and the right side of the seat, each armrest comprises an armrest frame and an armrest pad, each armrest frame comprises a support frame plate and a support frame rod, the doctor seat further comprises an armrest adjusting structure, and the armrest adjusting structure comprises an adjusting seat, a first adjusting rod, a second adjusting rod, a universal rotating joint and a locking piece. The invention not only can implement the synchronization of the two armrests or the position adjustment of the height difference, but also can implement any angle adjustment of the armrests and implement free locking under the condition that the locking piece loses external force, thereby meeting the requirements of different doctors on work or rest, forming optimal support for the armrests of the seat under the required angle and height, and simultaneously having simple structure, convenient implementation and low cost.

Description

Armrest-adjustable doctor seat

The application is a divisional application with the application date of 2021, 11-19, the application number of 2021113756962 and the name of a doctor seat.

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to a doctor seat with an adjustable armrest.

Background

It is known that when a doctor performs an examination or treatment operation for a long time, physical fatigue is likely to occur, and if the fatigue of the limb cannot be relieved, the operation is unstable, and the result of the treatment or examination is directly affected.

Currently, for a doctor's seat, it includes a seat, armrests and a walking wheel assembly, wherein the seat and armrests are generally fixed and cannot be adjusted, so that the seat and armrests cannot be supported at proper angles and positions (mainly front and back and up and down) when the doctor has a rest or works, and the common seat is difficult to meet the needs of work or rest due to the difference of the physique of the doctor.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and providing an improved armrest-adjustable doctor seat.

In order to solve the technical problems, the invention adopts the following technical scheme:

a physician's chair with adjustable armrests, comprising a chair seat, armrests and a walking wheel assembly, wherein the armrests are positioned at the left side and the right side of the chair seat, each armrest comprises an armrest frame and an armrest pad, wherein the armrest frame comprises a support frame plate and a support frame rod, in particular, the physician's chair further comprises an armrest adjusting structure, the armrest adjusting structure comprises an adjusting seat fixed on the chair, a first adjusting rod and a second adjusting rod which are arranged on the adjusting seat in an up-down movable way, a universal rotary joint connecting the support frame plate and the support frame rod of each armrest, and a locking piece which stretches into the corresponding universal rotary joint and is matched with the universal rotary joint to position the support frame plate and the support frame rod at a required position, the universal rotary joint comprises a ball head and a ball seat, the ball head is fixed on the support frame rod, the ball seat is fixed at the bottom of the support frame plate, the ball seat comprises an upper seat and a lower seat forming a ball head cavity, and a spacer, the upper seat is fixed at the bottom of the support frame plate, the spacer is in contact with the upper seat and the lower seat relatively, the spacer is in contact with the support frame plate and the ball seat is in contact with the support frame, and the spacer is in the position of the support frame plate is separated from the upper end of the support frame, and the spacer is connected with the support frame, and the spacer is in the position of the support frame, and the spacer is in the position between the support frame and the support frame seat and the position is separated from the end, and the rest seat; the number of the spacers is at least two, and two or more spacers and the balls are distributed on two opposite sides of the ball head correspondingly or circumferentially at intervals around the ball head.

The universal rotary joint can be used for adjusting any angle position required, so that the requirements of different doctors on using habits are met. The adopted locking piece does not need to adopt a resetting piece, and quick resetting is implemented by utilizing the lever principle. Meanwhile, the ball butt joint is convenient to assemble and flexible to unlock and lock.

Preferably, the end part of the support frame rod far away from the support frame plate is fixedly connected with the first adjusting rod and the second adjusting rod respectively, the first adjusting rod and the second adjusting rod are synchronously or sequentially or independently adjusted up and down, the universal rotating joint is arranged close to the front end of the support frame plate, the locking piece extends to the other end part along the length direction of the support frame plate, the extending end part is positioned below the corresponding end part of the support frame plate, the locking piece is in a balance lever shape and is rotationally connected to the support frame plate, and when the locking piece is subjected to external force and keeps stressed, the locking piece, the universal rotating joint and the support frame plate are integrally and universally rotated and adjusted relative to the support frame rod; after the locking piece is eliminated by external force, the lever is restored under the dead weight, the universal rotating joint is locked by the locking piece, and the positions of the support frame plate and the support frame rod are relatively fixed.

According to one embodiment of the invention, the guide support comprises a U-shaped chassis with an opening towards the support plate, and connecting pieces which are upwards and oppositely opened from two sides of the opening of the U-shaped chassis, wherein the connecting pieces are fixed at the bottom of the support plate, and the operating hand lever moves relatively close to or away from the support plate along the side wall of the U-shaped chassis to unlock or lock the universal rotary joint.

In some embodiments, the support frame plate comprises a rectangular panel, folded plates bent downwards from two sides of the length direction of the rectangular panel, and the armrest pad is integrally arranged and comprises a first pad body fixed on the rectangular panel, a second pad body and a third pad body which are respectively arranged on two sides of the length direction of the first pad body, wherein the first pad body, the second pad body and the third pad body form a bearing area with an upward opening. The formed bearing area is comfortable, has a certain limiting effect and avoids the phenomenon that the bearing area is accidentally separated from the handrail to lose support during working.

According to still another embodiment of the present invention, the handrail adjusting structure further includes a driving motor, a driving wheel provided on the seat body and rotated around a horizontal direction, a driving shaft penetrating from a center of the driving wheel and fixedly provided, a first coupling and a second coupling coupled to both ends of the driving shaft, a first transmission shaft and a second transmission shaft respectively coupled to the first coupling and the second coupling, and a first transmission member for driving the first transmission shaft to the first adjusting lever, and a second transmission member for driving the second transmission shaft to the second adjusting lever, wherein the first coupling and the second coupling can be operated synchronously or one or both of them can be operated sequentially. The coupling is here equivalent to a conventional clutch, and once disengaged, the transmission shaft and the drive shaft cannot move synchronously; only when the clutch is coupled, the transmission shaft and the driving shaft can synchronously move, so that the use requirements under different working conditions can be met.

Preferably, the first transmission member and the second transmission member have the same structure, and the first transmission member comprises a transmission gear fixed on the first transmission shaft and a transmission rack movably arranged on the seat frame up and down and matched with the transmission gear, wherein the transmission rack is fixedly connected with the first adjusting rod.

According to still another implementation of the present invention, each of the spacers includes an upper sphere and a lower sphere integrally disposed up and down, and mounting grooves matched with the upper sphere and the lower sphere are respectively provided on the upper seat and the lower seat. In some embodiments, when the operating handle is lifted upwards, the lock tongue downwards dials the lower seat around the supporting point to unlock relative to the upper seat in a moving way; when the operating handle is released, the lock tongue is reset under the dead weight of the operating handle, and the lower seat is reset relatively and clamped on the ball head to form locking.

According to a further embodiment of the invention, the locking element is inserted from a spacer formed by the upper seat and the lower seat, the locking element, when unlocked, expanding the lower seat relative to the upper seat. This embodiment is simple and the locking and unlocking means formed are easy to operate.

According to a further embodiment of the invention, each spacer comprises an upper sphere and a lower sphere which are arranged in an up-down integrated manner, and the upper seat and the lower seat are respectively provided with a mounting groove matched with the upper sphere and the lower sphere. The movable space of the upper seat and the lower seat after unlocking is increased under the relative movable ball, so that the universal rotation adjustment is more facilitated, the noise is low during rotation, and the abrasion to the ball head is small.

In addition, the upper seat and the lower seat are relatively and elastically connected through a connecting bolt and an elastic gasket which are arranged along the extending direction of the vertical upper seat.

Preferably, the adjusting seat comprises a seat body and seat frames extending horizontally to two sides, and the first adjusting rod and the second adjusting rod are respectively and movably arranged at two end parts of the seat frames. Thus, the back end of the seat board is driven to swing up and down, and the angle of the seat board can be adjusted.

Due to the implementation of the technical scheme, compared with the prior art, the invention has the following advantages:

the invention not only can implement the synchronization of the two armrests or the position adjustment of the height difference, but also can implement any angle adjustment of the armrests and implement free locking under the condition that the locking piece loses external force, thereby meeting the requirements of different doctors on work or rest, forming optimal support for the armrests of the seat under the required angle and height, and simultaneously having simple structure, convenient implementation and low cost.

Drawings

The invention will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic view of the structure of a physician's chair of the present invention;

FIG. 2 is a schematic view of the armrest adjustment structure of FIG. 1;

FIG. 3 is a partial schematic view of the structure of FIG. 2;

FIG. 4 is a schematic view of the structure of the handrail of the present invention;

FIG. 5 is a schematic front view of FIG. 4;

FIG. 6 is a schematic top view of FIG. 4;

FIG. 7 is a schematic cross-sectional view of A-A of FIG. 6;

FIG. 8 is a schematic view of the partial structure of FIG. 4;

FIG. 9 is a schematic view of the seat and seat adjustment structure of FIG. 1;

FIG. 10 is a partial schematic view of the structure of FIG. 9;

FIG. 11 is a schematic top view of FIG. 10;

FIG. 12 is a schematic view in section B-B of FIG. 11;

FIG. 13 is a partial schematic view of FIG. 9;

FIG. 14 is a left side schematic view of FIG. 13;

wherein: F. an armrest; t, an adjusting seat; t 1, a seat body; t 2, a seat frame; t 20, a frame sleeve; g1, a first adjusting rod; g2, a second adjusting rod; m, driving a motor; l, driving wheels; s, driving a shaft; q1, a first coupler; q2, a second coupling; c1, a first transmission shaft; c2, a second transmission shaft; d1, a first transmission piece;

d2, a second transmission piece; d10, a transmission gear; d11, a transmission rack; f1, an armrest frame; f10, supporting the frame plate; f100, rectangular panels; f101, folding plates; f11, supporting the hack lever; 110. a main rod; 111. an auxiliary rod; f2, an armrest pad; f21, a first pad body; f22, a second pad body; f23, a third pad body; f3, universal rotating joint; f30, ball head; f31, ball seat; 310. an upper seat; 311. a lower seat; 312. a spacer; a. an upper sphere; b. a lower sphere; 313. an elastic connection member; f4, locking piece; f40, locking bolt; f41, operating the hand lever; 410. an extension arm; 411. a grab handle bar; f42, ball; f5, guiding the supporting frame; f50, a U-shaped underframe; f51, connecting sheet.

Y, chair seat; 1. a seat part; 10. a base; 100. a fixing seat; x, inserting grooves; 100a, sliding rails; 101. a slide; a. a seat body; b. controlling the arm lever; b1, a plug connector; c. a mounting base; c1, a seat bucket; c10, a chute; c11, an inner support; c110, diagonal bracing; c111, supporting plates; c2, connecting rods; c3, a seat cover; h. a tension spring; 102. a seat plate; 11. a cushion; 12. a turnover mechanism; 120. a slide block; 121. a connection module; 122. a brace rod; 123. a locking member; 124. a jack-up member; d1, a first component; d2, a second component; 2. a chair section; 20. a backrest; 200. a lower leaning rod; 201. an upper leaning rod; g1, a first rod body; g2, a second rod body; 21. a back cushion; 3. a seat rod; 30. an inner loop bar; 31. an outer sleeve rod; 32. a rod sleeve; 33. a ball;

13. a lifting mechanism; 130. a power lifting rod; 131. a limit module; 132. a hydraulic pump station;

p, chassis; E. and a walking wheel assembly.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1, the physician's seat of the present embodiment includes a seat Y, armrests F and a walking wheel assembly E, an armrest adjusting structure, and a seat adjusting structure, wherein the armrests F are two and are located on opposite sides of the seat Y.

Specifically, each armrest F includes an armrest frame F1, an armrest pad F2, wherein the armrest frame F1 includes a support frame plate F10 and a support frame rod F11.

As shown in fig. 2 and 3, the armrest adjusting structure includes an adjusting seat T fixed to the seat Y, first and second adjusting rods G1 and G2 movably disposed up and down on the adjusting seat T, a universal joint F3 connecting the support frame plate F10 and the support frame rod F11 of each armrest F, and a locking member F4 extending into the corresponding universal joint F3 and cooperating with the universal joint F3 to position the support frame plate F10 and the support frame rod F11 at a desired position.

The end part of the support frame rod f11 far away from the support frame plate f10 is fixedly connected with the first adjusting rod G1 and the second adjusting rod G2 respectively, and the first adjusting rod G1 and the second adjusting rod G2 are adjusted up and down synchronously or sequentially or independently.

Specifically, the adjusting seat T includes a seat body T1, a seat frame T2 extending horizontally to two sides, and a first adjusting rod G1 and a second adjusting rod G2 are movably and adjustably disposed at two ends of the seat frame T2, respectively.

The adjusting structure further comprises a driving motor M, a driving wheel L which is arranged on the seat body t 1 and rotates around the horizontal direction, a driving shaft S which penetrates through the center of the driving wheel L and is fixedly arranged, a first coupler Q1 and a second coupler Q2 which are in butt joint with two ends of the driving shaft S, a first transmission shaft C1 and a second transmission shaft C2 which are respectively connected with the first coupler Q1 and the second coupler Q2, a first transmission piece D1 which is used for connecting the first transmission shaft C1 with the first adjusting rod G1 in a transmission way, and a second transmission piece D2 which is used for connecting the second transmission shaft C2 with the second adjusting rod G2 in a transmission way, wherein the first coupler Q1 and the second coupler Q2 can work synchronously or one or two of the two couplers work sequentially. The coupling is here equivalent to a conventional clutch, and once disengaged, the transmission shaft and the drive shaft cannot move synchronously; only when the clutch is coupled, the transmission shaft and the driving shaft can synchronously move, so that the use requirements under different working conditions can be met.

Specifically, the first transmission member D1 and the second transmission member D2 have the same structure, and therefore, on the premise that the structure of the first transmission member D1 is clear, the structure of the second transmission member D2 is also clear.

Similarly, the first coupling Q1 and the second coupling Q2 are identical in structure.

In this example, the first transmission member D1 includes a transmission gear D10 fixed on the first transmission shaft C1, and a transmission rack D11 movably disposed on the mount t 2 and engaged with the transmission gear D10, where the transmission rack D11 is fixedly connected with the first adjusting rod G1.

Specifically, a frame sleeve t 20 extending up and down is formed at an end of the seat frame t 2, and a transmission rack d11 is movably disposed in the frame sleeve t 20 up and down. Thus, the stability of the up-and-down movement is further improved.

As shown in connection with fig. 4 and 5, the armrest frame f1 includes a support frame plate f10 and a support frame rod f11, wherein the support frame plate f10 includes a rectangular panel f100, a folded plate f101 bent downward from both sides of the rectangular panel f100 in a length direction, the support frame rod f11 includes a main lever 110 and an auxiliary lever 111, wherein a universal rotation joint f3 connects the main lever 110 with the rectangular panel f100, and the auxiliary lever 111 is connected with a doctor seat.

In this example, the rectangular panel f100 and the folded plate f101 are integrally formed and formed as a sheet metal member.

As shown in fig. 6, the armrest pad f2 is also integrally disposed and includes a first pad f21 fixed on the rectangular panel f100, and a second pad f22 and a third pad f23 respectively disposed on two sides of the first pad f21 in the length direction, wherein the first pad f21, the second pad f22 and the third pad f23 form a supporting area with an upward opening. Therefore, the formed bearing area is comfortable, has a certain limiting effect and avoids the phenomenon that the bearing area is accidentally separated from the handrail to lose support during working.

The universal joint f3 is provided near the front end of the support frame plate f10, the lock member f4 extends toward the other end portion along the length direction of the support frame plate f10, and the extending end portion is located below the corresponding end portion of the support frame plate f 10.

In this example, the armrest pad f2 is a conventional flexible pad.

Referring to fig. 7, the locking member f4 can extend into the universal rotation joint f3 and cooperate with the universal rotation joint f3 to position the support frame plate f10 and the support frame rod f11 at a desired position, and meanwhile, the locking member f4 is subjected to an external force and kept under the force, and is integrally and rotatably adjusted with the universal rotation joint f3 and the support frame plate f10 relative to the support frame rod f 11; after the external force applied to the locking piece f4 is eliminated, the universal rotation joint f3 is locked by the locking piece f4, and the positions of the support frame plate f10 and the support frame rod f11 are relatively fixed. Therefore, the universal rotary joint can be used for adjusting any angle position required, so that the requirements of different doctors on using habits are met.

Referring to fig. 8, the universal joint f3 includes a ball head f30 and a ball seat f31, wherein the ball head f30 is fixed to the main rod 110, and the ball seat f31 is fixed to the bottom of the rectangular panel f 100. The arrangement is mainly convenient to assemble, and is also beneficial to the stable implementation of the position adjustment of the armrests.

Ball seat f31 includes upper and

lower seats

310 and 311 forming a ball head cavity, a spacer 312, and an elastic connection member 313, wherein upper seat 310 is fixed at the bottom of rectangular panel f100, spacer 312 relatively separates upper and

lower seats

310 and 312, elastic connection member 313 elastically abuts lower seat 311 on spacer 312, and universal rotary joint 3 is in a locked state when upper and

lower seats

310 and 311 are relatively clamped on the opposite surfaces of ball head f 30; when the upper seat 310 and the lower seat 311 are relatively separated from each other and from the surface of the ball head f30, the universal rotary joint 3 is in an unlocked state. The implementation is convenient, the stability is high, and a good support is formed.

That is, under the abutting connection of the elastic connection member 313, the upper seat 310, the spacer 312 and the lower seat 311 are kept in a clamped state, and at this time, the formed ball cavity is the smallest, so that the clamping ball f30 can be optimally locked; once the lower seat 311 and the upper seat 310 are relatively opened, the ball cavity becomes larger, and at the moment, the ball seat f31 can be universally adjusted relative to the ball f 30.

Specifically, the spacer 312 includes an upper ball a and a lower ball b integrally disposed up and down, and the upper seat 310 and the lower seat 311 are respectively provided with mounting grooves matched with the upper ball a and the lower ball b. Therefore, the movable space for the upper seat and the lower seat after unlocking is increased under the relative movable ball, the universal rotation adjustment is more facilitated, the noise is low during rotation, and the abrasion to the ball head is small.

The resilient connector 313 employs conventional connecting pins and resilient pads.

The locking member f4 is inserted from the space formed by the upper seat 310 and the lower seat 311, and when unlocked, the locking member f4 expands the lower seat 311 relative to the upper seat 310. This embodiment is simple and the locking and unlocking means formed are easy to operate.

The locking piece f4 comprises a lock tongue f40 supported at the bottom of the upper seat 310 in a rotating way, and an operating handle rod f41 connected to the other end part of the lock tongue f40, wherein when the operating handle rod f41 is lifted upwards, the lock tongue f40 downwards toggles the lower seat 311 around a supporting point to unlock relative to the upper seat 310 in a moving way; when the operating lever f41 is released, the lock tongue f40 is reset by the weight of the operating lever f41, and the lower seat 311 is relatively reset and clamped on the ball head f30 to form locking. The quick resetting is implemented by utilizing the lever principle without adopting a resetting piece.

Specifically, ball f42 is adopted to butt-joint between upper seat 310 and lock tongue f40, guide support frame f5 is formed at the bottom of support frame plate f10, and lock tongue f40 is erected on guide support frame f5 from operating hand lever f41 when being separated from lower seat 311. The embodiment is convenient to assemble and dock, and meanwhile, the relatively movable ball bearings are adopted for docking, so that the assembly is convenient, and the implementation of unlocking and locking is more flexible.

In this example, there are two spacers 312 and two balls f42, wherein the two spacers 312 and the two balls f42 are distributed on opposite sides of the ball head f 30.

The guide support frame f5 includes a U-shaped chassis f50 open toward the support frame plate f10, and connecting pieces f51 which are upwardly and oppositely opened from both sides of the opening of the U-shaped chassis f50, wherein the connecting pieces f51 are fixed to the bottom of the support frame plate f 10.

The operation lever f41 extends along the length direction of the support frame plate f10 and passes through the U-shaped chassis f 50.

In this example, the operating lever f41 includes an extension arm 410 penetrating through the U-shaped chassis f50 and having one end connected to the locking bolt f40, and a grip lever 411 provided at the other end of the extension arm 410, wherein the extension arm 410 moves relatively closer to or farther from the support frame plate f10 along the side wall of the U-shaped chassis f50 to unlock or lock the universal joint rotation f 3. The lever movement is made more stable while the grip lever 411 extends in the width direction of the support frame plate f10, which is convenient for the user to operate manually.

In summary, the implementation process of the universal adjustment of the armrest of the embodiment is as follows:

holding handle bar 411 is lifted upwards, lock tongue f40 rotates around ball f42 and opens lower seat 311 downwards, at this time, the ball head cavity formed between upper seat 310 and lower seat 311 is enlarged and separated from the surface of ball head f30 relatively, therefore, under the condition of holding handle bar 411 lifted upwards (i.e. under the condition of holding lock tongue f40 to open ball head cavity), ball seat f31 rotates freely and universally relative to ball head f30, thus adjusting support frame plate f10 and support frame bar f11 to the required angle, after angle adjustment is completed, handle bar 411 is released, at this time, handle bar 411 is reset downwards along U-shaped underframe f50 and supported on U-shaped underframe f50, at the same time lock tongue f40 is reset gradually, lower seat 311 is reset synchronously, ball head cavity is reduced gradually until ball head cavity is clamped on the surface of ball head f30 from the inner wall, locking is implemented, and thus the armrest positioning after angle adjustment is completed.

In summary, the height process of the armrest of the present embodiment is as follows:

the driving motor M works, and under the driving of the driving shaft S, whether the first coupler Q1 and the second coupler Q2 are synchronously regulated or not is determined according to actual needs, once synchronous regulation is confirmed, the driving shaft S and the first transmission shaft C1 and the second transmission shaft C2 synchronously run, and meanwhile, the driving gear d10 is driven to rotate and drive the corresponding matched driving rack d11 to move up and down, so that up and down synchronous lifting of the two handrails F is implemented.

Thus, the armrest has the following advantages:

1. the armrest can be adjusted at any angle under the unlocking or locking of the universal rotary joint, and can be locked freely under the condition that the locking piece loses external force, so that the armrest is very convenient to implement, and the required armrest angle support can be met when different doctors work or rest;

2. the ball seat is designed to be elastically tightened, and the interval between the upper ball body and the lower ball body and the rolling support are added, so that the degree of freedom of the relative movement of the ball seat is larger once the ball seat is unlocked, the angle of the armrest is more beneficial to adjustment, and meanwhile, the abrasion and noise on the surface of the ball head are further reduced;

3. the automatic reset of the lock tongue can be implemented by adopting the forced fit of the lever and the dead weight without adding an external member, so that the automatic reset device is simple in structure and convenient to operate;

4. the two armrests can be synchronously adjusted in a lifting manner or adjusted in a height difference manner, so that the height required by doctors in different working conditions is met, and the angle of the armrests can be adjusted when the height adjustment is implemented.

As shown in fig. 9, the seat Y includes a seat portion 1 having a base 10 and a seat cushion 11, a seatback portion 2 having a backrest 20 and a cushion 21, and a seat post 3.

As shown in fig. 10 to 12, the base 10 includes a fixed base 100, a slider 101 slidably provided on the fixed base 100 in the front-rear direction of the fixed base 100, a seat plate 102 provided on the slider 101, and a seat cushion 11 mounted on the seat plate 102.

The seat bar 3 includes an inner sleeve bar 30 and an outer sleeve bar 31, wherein the inner sleeve bar 30 is fixed on the chassis P of the doctor seat from a lower end portion, the outer sleeve bar 31 is disposed to move up and down along a length direction of the inner sleeve bar 30, and an upper end portion is fixed on the fixing base 100.

As shown in fig. 13 and 14, the seat adjusting structure includes a tilting mechanism 12 provided between the slider 101 and the seat pan 102 to drive the seat pan 102 to tilt around the horizontal direction, and a lifting mechanism 13 for driving the inner and

outer cover rods

30 and 31 to relatively extend or contract.

In this example, a slide rail 100a extending in the front-rear direction is provided on the fixing base 100, the slide base 101 includes a base body a slidably provided on the slide rail 100a, a lever b connected to the base body a and capable of being locked with the fixing base 100, a mounting seat c provided on the base body a, and the seat plate 102 is mounted on the mounting seat c.

Specifically, the control arm b extends forward from the front end of the seat body a and is located below the seat part 1, the control arm b is rotatably arranged on the seat body a from the rear end, tension springs h for keeping the control arm b and the seat body a relatively attached to each other are arranged between the control arm b and the seat body a, a plurality of inserting grooves x distributed along the front-rear direction are formed on the fixed seat 100, inserting heads b 1 matched with the inserting grooves x are formed on the control arm b, during adjustment, the control arm b turns upwards around the rear end, the tension springs h are stressed, the inserting heads b 1 of the control arm b are separated from the inserting grooves x, and the seat part 1 moves forwards and backwards; the external force is removed from the control arm lever b, the tension spring h is reset, and the plug connector b 1 is inserted into the plug groove x. Therefore, the front and back position adjustment of the seat can be positioned in the movement and the resetting of the control arm rod, and the seat is very convenient.

The mounting seat c includes a seat bucket c1 formed with an opening facing upward, a connecting rod c2 fixed to the seat body a, and a seat cover c3 provided in the seat bucket c1 and having a butt joint with the connecting rod c2, and the seat plate 102 is pivotally connected to an upper portion of a front end portion of the seat bucket c1 by a horizontally extending pivot. Thus, the seat board can close the seat bucket, and the seat bucket and the seat body are conveniently butted.

A chute c 10 provided from top to bottom is formed at the front end portion of the bucket c1, and the seat portion 1 further includes a tilting mechanism 12 provided between the slider 101 and the seat pan 102 to drive the seat pan 102 to tilt around the horizontal direction.

Specifically, the tilting mechanism 12 includes a slider 120 slidably disposed in the chute c 10, a connection module 121 fixed to the rear of the seat plate 102, a stay 122 rotatably connected at both ends between the slider 120 and the connection module 121, and a locking piece 123 for locking the slider 120 and the bucket c1 relative to each other. Thus, the angle by which the seat plate is tilted about the pivot can be implemented by manipulating the position of the slider.

Specifically, the stay 122 is a telescopic rod, and is an air cylinder, an oil cylinder, or an electric cylinder. Thus, the position of the sliding block can be controlled by further changing the length of the stay rod, so that the seat plate presents a required angle.

In this example, the stay 122 is a gas spring.

An inner bracket c 11 is further provided in the bucket c1, and the tilting mechanism 12 further includes a top support member 124 provided between the front and rear portions of the seat plate 102 and mounted on the inner bracket c 11. Further improving the supporting effect provided by the seat board.

The inner bracket c 11 comprises a diagonal brace c 110 with one end fixed at the front end of the bucket c1 and the other end supported on the seat cover c 3; the bracing plate c 111 for positioning the diagonal bracing c 110 on the floor of the bucket c1, the bracing member 124 comprises a first member d1 arranged on the diagonal bracing c 110 and a second member d2 arranged on the seat plate 102, wherein the first member d1 and the second member d2 are connected in a universal rotation. Here, the universal rotation adjustment is used to meet any angle change and to maintain an effective support at all times.

In this example, a connecting bolt is arranged on the diagonal brace c 110, a ball head is formed at the upper end, a connector is arranged at the corresponding position of the seat plate 102, and the connector is in wrapped rotary connection with the ball head part, that is, the first component d1 is a ball head piece; the second part d2 is a tee member.

The backrest 20 includes a lower rest bar 200 having a lower end portion abutting the slider 101, and an upper rest bar 201 pivoted to the lower rest bar 200 and movably adjusted along a length direction of the lower rest bar 200, and the cushion 21 is mounted on the upper rest bar 201.

A notch is formed in the rear portion of the seat plate 102, the lower arm 200 is connected to the slider 101 from the lower end portion via a connecting shaft, and the upper end portion of the lower arm 200 passes through the notch and is located above the seat cushion 21.

The upper reclining lever 201 includes a first lever g1 rotated and locked with an upper portion of the lower reclining lever 200 about a horizontal direction, a second lever g2 movably provided on the first lever g1 along a length direction of the first lever g1, and a locking portion g3 relatively locking the first lever g1 and the second lever g 2. This provides two benefits: 1. the inclination angle adjustment of the backrest can be implemented; 2. the extension height adjustment of the backrest can be performed. That is, whether angular or high, the ultimate goal is to meet the needs of the physician in use during work or rest.

In this example, the cushion 21 is provided on the upper portion of the second rod g 2. Thus, the position of the cushion 21 is adjusted by adjusting the second lever g2, thereby providing comfortable support for the proper position and angle of the backrest 2.

Meanwhile, two seat bars 3 are provided, a bar sleeve 32 is formed on the outer circumference of each inner sleeve bar 30, balls 33 are arranged on the bar sleeve 32, and the inner wall of the outer sleeve bar 31 is attached to the balls 33 and moves up and down along the length direction of the inner sleeve bar 30.

The elevating mechanism 13 includes a power elevating rod 130 disposed between the chassis P and the fixing base 100, and a limit module 131 disposed at a lower end portion of each inner jacket rod 30 and protruding outward from an outer circumference. And the relative adjustment of the inner sleeve rod and the outer sleeve rod is convenient under the sliding and guiding of the ball.

In this example, the power lifting rod 130 is a hydraulic cylinder, and a hydraulic pump station 132 is disposed on the chassis.

Specifically, the limiting module 131 is a right triangle, and is fixedly attached to the side edge of the inner sleeve rod 30 from one right-angle edge, and the other right-angle edge is set up upwards, so that when the seat rod 3 is in the shortest state, the lower end of the outer sleeve rod 31 abuts against the right-angle edge of the top.

In this example, it is to be further explained that: when the upper leaning rod 201 and the lower leaning rod 200 are folded by relative rotation, the cushion 21 and the cushion 11 are relatively close and are attached up and down. Therefore, after being folded, the utility model is convenient to transport.

In summary, the seat in this embodiment has the following advantages:

1. not only can the front and back and up and down adjustment of the seat be implemented, but also the angle adjustment of the seat part and the armchair part, in particular the height adjustment of the armchair part itself, so that the seat can meet the optimal support required by different doctors when working or resting;

2. the position and the angle of the cushion and the cushion are convenient to adjust and convenient to implement, and the seat has stable angle support under the middle support and the tail support;

3. the structure layout is reasonable, the hiding and the protection of the turnover mechanism can be implemented, and once the external force is lost by the control arm lever, the tension spring is reset, the plug connector is inserted into the plug groove, and the front and rear position adjustment of the seat can be implemented, so that the positioning is very convenient;

4. the backrest part and the seat part are convenient to fold, small in size and convenient to transport.

In addition, the traveling wheel assembly E includes four traveling wheels at four corners and a transmission member for transmitting and connecting the four traveling wheels, so that the traveling wheels can be rotated in the same direction to perform movement.

Meanwhile, a withdrawing handle and an external connector (such as a hanging piece) can be additionally arranged on the seat frame t 2 of the seat Y.

The present invention is described in detail above, but the present invention is not limited to the above-described embodiments. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. A physician's chair with adjustable handrail, it includes seat support, handrail and walking wheel subassembly, wherein the handrail is located the left and right sides of seat support, every the handrail includes handrail frame, handrail pad, wherein the handrail frame includes carriage plate and carriage bar, its characterized in that:

the medical doctor seat also comprises a handrail adjusting structure, the handrail adjusting structure comprises an adjusting seat fixed on the seat, a first adjusting rod and a second adjusting rod which are vertically movably arranged on the adjusting seat, a universal rotating joint which is used for connecting the support frame plate and the support frame rod of each handrail, and a locking piece which stretches into the corresponding universal rotating joint and is matched with the universal rotating joint to position the support frame plate and the support frame rod at a required position, wherein the universal rotating joint comprises a ball head and a ball seat, the ball head is fixed on the support frame rod, the ball seat is fixed at the bottom of the support frame plate, the ball seat comprises an upper seat and a lower seat which form a ball head cavity, and a spacer, wherein the upper seat is fixed at the bottom of the support frame plate, the spacer is used for relatively spacing the upper seat and the lower seat, the lower seat is elastically abutted against the spacer, the locking piece comprises an operating rod which is used for rotating the bottom of the upper seat and one end part of the support frame plate stretches into the spacer, and is connected with the lock tongue at the other end part, the ball seat is used for connecting the lock tongue, and the guide seat is separated from the bottom of the support frame by adopting the ball seat, and the guide seat is arranged at the bottom of the support frame; the number of the spacers is at least two, and two or more spacers and the balls are distributed on two opposite sides of the ball head correspondingly or circumferentially at intervals around the ball head.

2. The armrest-adjustable physician chair of claim 1, wherein: the end part of the support frame rod far away from the support frame plate is fixedly connected with the first adjusting rod and the second adjusting rod respectively, the first adjusting rod and the second adjusting rod are synchronously or sequentially or independently adjusted up and down, the universal rotating joint is arranged close to the front end of the support frame plate, the locking piece extends to the other end part along the length direction of the support frame plate, the extending end part is positioned below the end part corresponding to the support frame plate, the locking piece is in a balanced lever shape and is rotationally connected to the support frame plate, and when the locking piece is subjected to external force and keeps stressed, the locking piece, the universal rotating joint and the support frame plate are integrally and oppositely rotated and adjusted in a universal way relative to the support frame rod; after the locking piece is eliminated by external force, the lever is restored under the dead weight, the universal rotating joint is locked by the locking piece, and the positions of the support frame plate and the support frame rod are relatively fixed.

3. The armrest-adjustable physician chair of claim 2, characterized in that: the guide support frame comprises a U-shaped underframe with an opening facing the support frame plate and connecting pieces which are upwards arranged at two sides of the opening of the U-shaped underframe and are relatively opened towards two sides, wherein the connecting pieces are fixed at the bottom of the support frame plate, and the operating hand lever moves relatively close to or far away from the support frame plate along the side wall of the U-shaped underframe to unlock or lock the universal rotary joint.

4. A physician's chair with adjustable armrests according to claim 3, characterized in that: the support frame plate comprises a rectangular panel, folded plates which are downwards bent from two sides of the length direction of the rectangular panel, and the armrest pad is integrally arranged and comprises a first pad body fixed on the rectangular panel, a second pad body and a third pad body which are respectively arranged on two sides of the length direction of the first pad body, wherein the first pad body, the second pad body and the third pad body form a bearing area with an upward opening.

5. The armrest-adjustable physician chair of claim 1, wherein: the handrail adjusting structure also comprises a driving motor, a driving wheel which is arranged on the base body and rotates around the horizontal direction, a driving shaft which penetrates out of the center of the driving wheel and is fixedly arranged, a first coupler and a second coupler which are in butt joint with two ends of the driving shaft, a first transmission shaft and a second transmission shaft which are respectively connected with the first coupler and the second coupler, a first transmission part which is used for connecting the first transmission shaft with the first adjusting rod in a transmission way, and a second transmission part which is used for connecting the second transmission shaft with the second adjusting rod in a transmission way, wherein the first coupler and the second coupler can synchronously work or one of the two couplers works or the two couplers work successively.

6. The armrest-adjustable physician chair of claim 1, wherein: the first transmission piece and the second transmission piece are identical in structure, and the first transmission piece comprises a transmission gear fixed on the first transmission shaft and a transmission rack which is movably arranged on the seat frame up and down and matched with the transmission gear, wherein the transmission rack is fixedly connected with the first adjusting rod.

7. The armrest-adjustable physician chair of claim 1, wherein: each spacer comprises an upper sphere and a lower sphere which are arranged up and down integrally, and mounting grooves matched with the upper sphere and the lower sphere are respectively arranged on the upper seat and the lower seat; and/or when the operating handle is lifted upwards, the lock tongue downwards dials the lower seat around the supporting point to move away from the upper seat to unlock the lower seat; when the operating handle is released, the lock tongue is reset under the dead weight of the operating handle, and the lower seat is reset relatively and clamped on the ball head to form locking.

8. The armrest-adjustable physician chair of claim 1, wherein: each spacer comprises an upper sphere and a lower sphere which are arranged up and down integrally, and mounting grooves matched with the upper sphere and the lower sphere are respectively arranged on the upper seat and the lower seat.

9. The armrest-adjustable physician chair of claim 1, wherein: the upper seat and the lower seat are in relative elastic connection through a connecting bolt and an elastic gasket which are arranged along the extending direction of the vertical upper seat.

10. The armrest-adjustable physician chair of claim 1, wherein: the adjusting seat comprises a seat body and seat frames extending horizontally to two sides, and the first adjusting rod and the second adjusting rod are respectively and movably arranged at two end parts of the seat frames.