CN114948574A - Ophthalmic chair - Google Patents

Abstract

The invention relates to the field of medical auxiliary instruments and discloses an ophthalmologic chair which comprises a seat board, a backrest, a pair of supporting legs and a pair of armrests, wherein the backrest is a backrest with an adjustable angle with the seat board; the support legs are positioned below two sides of the seat board, each support leg comprises a front support leg and a rear support leg, each rear support leg extends to the rear part of the seat board, each front support leg extends to the front part of the seat board, each armrest comprises an armrest body, and a front support leg and a rear support leg which are connected with the armrest body, the front support leg and the rear support leg are positioned between the front support leg and the rear support leg, and the front support leg, the rear support leg, the front support leg and the rear support leg are all in contact with the ground; the armrest body is arranged obliquely. This ophthalmology chair is through the optimization to the handrail, makes the patient lie down or when getting up, and it is easy to exert oneself, optimizes through the handrail simultaneously, moves the chair center forward to bedplate below, improves the safety in utilization.

Description

Ophthalmic chair

Technical Field

The invention relates to the field of medical auxiliary instruments, in particular to an ophthalmologic chair.

Background

The ophthalmologic technical operation is one of the important means for treating eye diseases, and a large number of patients with different ages and different body types are treated in the ophthalmologic outpatient clinic of a hospital. The clinical common treatment operations include eye irrigation, eye tract irrigation, eye dressing change and the like. When in treatment, a patient generally sits on a treatment chair, and leans against the headrest backwards to treat, and the method has the following defects: firstly, in order to facilitate the operation of nurses, the cushion for patients is lower, the old people do not have a handrail when sitting down, and the old people need to be held down by nurses or lifted up by nurses, so that the operation is inconvenient. Two, when the patient carries out the eye and washes, current ophthalmology chair has only set up head bracket, is not enough to patient's support and fixed action, and the nurse of being not convenient for operates the best direction of patient's head about unable adjusting from top to bottom. When the patient uses the medicine and washes the eye, need use the saucer, the treatment chair saucer that can have now can't hug closely the face, wash in the eye drop can't flow the saucer or the saucer mount can't adjust the direction according to the patient's size. Fourth, current ophthalmology chair can't provide comfortable experience for the patient and feels, can not hug closely the back because of patient's waist, is in unsettled state, or when the back was adjusted, the handrail was also adjusted together, and half state handrail of lying does not support, and during long-time treatment, the patient often can feel waist ache or very tired, does not have the sense of security moreover.

The following can be seen in detail:

CN201520962750.7(D1) discloses an ophthalmological comprehensive treatment chair, which comprises a chair surface, chair legs and a backrest, wherein the chair legs comprise a left chair leg and a right chair leg which are connected through a cross beam, the chair surface is arranged on the cross beam between the chair legs at two sides, the backrest is hinged on the rear legs at two sides, the backrest comprises a back cushion, a support frame for supporting the back cushion, an adjusting mechanism for adjusting the inclination of the backrest on the hinged support frame, a rocker arm arranged at the side of the support frame and having a lifting function, a water receiving device arranged on the rocker arm, and a head support arranged on the support frame for supporting the head; a bracket is arranged on the cross beam below the chair surface, a water collecting device is arranged on the bracket, and the water collecting device is connected with the water receiving device through a guide pipe.

CN202123364141.6(D2) discloses a multifunctional deck chair for ophthalmologic examination, which belongs to the field of ophthalmologic examination technology, and comprises a deck chair; stabilizing mean, stabilizing mean include fixed block, screw-nut, lead screw, hollow block, gag lever post and the hollow groove of second, and fixed block, screw-nut and the hollow groove of second all are equipped with two, and two equal fixed block fixed connection are in the one end of deck chair, and the lead screw rotates to be connected in the near-end that leans on mutually of two fixed blocks.

CN201720075730.7(D3) discloses an operation chair for ophthalmologic conjunctival sac irrigation, which comprises a conjunctival sac irrigation chair with adjustable backrest angle, a head support, chair legs, fixing seats on the left and right sides of a seat plate of the conjunctival sac irrigation chair, a water-receiving device support frame arranged in the middle of a suspension rod of a washing fluid container, a water-receiving device support frame shaft sleeve matched with the suspension rod of the washing fluid container arranged at one end of the water-receiving device support frame, a water-receiving device fixing ring arranged at the other end of the water-receiving device support frame shaft sleeve, a telescopic rod arranged between the water-receiving device fixing ring and the water-receiving device support frame shaft sleeve, a limit step for limiting the water-receiving device support frame shaft sleeve arranged on the suspension rod of the washing fluid container, an adjustable backrest support rod arranged between the backrest and a rear chair leg of four chair legs, wherein the lower end of the backrest is hinged to a hinged support on the rear chair leg, and the upper end of the adjustable backrest support rod is hinged to a hinged support on the backrest back.

The above-mentioned D1-D3 have a common problem in that: when some people such as the old people lie down or get up, the existing chair cannot provide good stress support, and when the chair stands up, the chair is easy to overturn after the gravity center is leaned, so that potential safety hazards are caused.

The technical problems to be solved by the invention are as follows: how to improve the stability of current ophthalmology chair, how to make the ophthalmology chair more do benefit to special crowd's use, improve the safety in utilization simultaneously.

Disclosure of Invention

The invention mainly aims to provide an ophthalmologic chair, which enables a patient to exert force more easily when lying down or getting up through the optimization of armrests, and simultaneously enables the center of the chair to move forwards to the position below a seat plate through the optimization of the armrests, so that the use safety is improved.

In order to achieve the purpose, the technical scheme adopted by the application is as follows:

an ophthalmologic chair comprises a seat plate, a backrest, a pair of supporting legs and a pair of armrests, wherein the backrest is a backrest with an angle adjustable with the seat plate; the support legs are positioned below two sides of the seat board, each support leg comprises a front support leg and a rear support leg, each rear support leg extends to the rear part of the seat board, each front support leg extends to the front part of the seat board, each armrest comprises an armrest body, and a front support leg and a rear support leg which are connected with the armrest body, the front support leg and the rear support leg are positioned between the front support leg and the rear support leg, and the front support leg, the rear support leg, the front support leg and the rear support leg are all in contact with the ground; the armrest bodies are arranged in an inclined mode, and the height of one side, close to the backrest, of each armrest body is lower than that of one side, far away from the backrest, of each armrest body; the front support legs are fixedly connected with the front support legs, and the rear support legs are fixedly connected with the rear support legs.

In the above ophthalmologic chair, the armrest body includes an armrest body, a U-shaped section with an opening facing the backrest, the rear leg is connected to one end of the armrest body, the front leg is connected to one end of the U-shaped section, and the other end of the U-shaped section is connected to the other end of the armrest body.

In the above ophthalmological chair, the included angle between the armrest body and the horizontal plane is 15-25 °, and the U-shaped section extends to the front of the seat plate.

In the above ophthalmologic chair, the seat plate comprises a seat plate body and a seat plate supporting frame fixedly connected with the seat plate body, and the seat plate supporting frame is fixedly connected with the front support leg and/or the rear support leg; the landing leg still includes the connecting rod of connecting preceding landing leg and back landing leg, the landing leg is the U font structure of opening decurrent, bedplate braced frame and connecting rod fixed connection.

In the above ophthalmic chair, the backrest is connected with a headrest, a C-shaped connecting member, and a lifting mechanism; the headrest is hinged with one end of the C-shaped connecting piece in a lockable manner, and the other end of the C-shaped connecting piece is hinged with the lifting mechanism in a lockable manner;

when the lifting mechanism descends to the lowest position, the top of the backrest enters the inside of the C-shaped connecting piece from the opening of the C-shaped connecting piece.

In the above ophthalmic chair, the ophthalmic chair further comprises a water receiving unit, the water receiving unit comprises a water receiver, a water receiver bracket and a bracket fixer, the water receiver bracket is a bracket capable of rotating in a universal direction, the bracket fixer is hinged with one end of the water receiver bracket, the water receiver bracket can move and be positioned between the left side and the right side of the backrest around the bracket fixer, and the bracket fixer is fixed on the C-shaped connecting piece; the water receiver support is connected with an elastic piece, and the elastic piece is used for drawing the water receiver support towards the direction of the headrest.

In the above ophthalmic chair, the ophthalmic chair further comprises a connecting plate, one end of the connecting plate is fixedly hinged with the C-shaped connecting piece, and the other end of the connecting plate is fixedly hinged with the end part of the water receiver bracket; the elastic piece is an elastic piece with adjustable tension, and a holding part for a person to adjust the position of the headrest is arranged on the back of the headrest.

In the ophthalmological chair, the water receptor bracket comprises a first rod body, a second rod body, a plate body and a frame body, wherein one end of the first rod body is hinged with a connecting plate, the first rod body and the second rod body are connected through a lockable ball head connecting piece, the plate body is fixedly connected to the end part of the second rod body, a strip-shaped hole is formed in the plate body, and the frame body is fixed on the strip-shaped hole in a position-adjustable manner; the water receiver is fixed in the frame body, one end of the elastic piece is connected with the second rod body, and the other end of the elastic piece is connected with the headrest.

In the ophthalmological chair, the frame body comprises a cup body support used for accommodating the water receiver, a torsion spring and a base, the cup body support and the torsion spring are fixed on the base, the base is fixed on the strip-shaped holes through bolts, the water receiver is in contact with one side of the face of a human body, and a power end of the torsion spring is fixedly connected with one side of the water receiver opposite to the contact side.

In the above ophthalmologic chair, the armrests are provided with soft pads; a cross bar is arranged between the two rear supporting legs, an air cylinder, an oil cylinder or an electric cylinder is hinged to the cross bar, and the power output end of the air cylinder, the oil cylinder or the electric cylinder is hinged to the back of the backrest; the cross rod extends between the rear supporting leg and the rear supporting leg, and the hinged position of the air cylinder is positioned between the rear supporting leg and the rear supporting leg; it should be noted that: the electric cylinder can be an electric push rod.

A backrest bracket is fixed at the back of the backrest;

the bottoms of the front support leg, the rear support leg, the front support leg and the rear support leg are all provided with leveling anti-skidding foot pads.

The scheme has at least one of the following advantages or beneficial effects:

according to the scheme, the support legs of the armrests extend between the front support leg and the rear support leg, the armrests can transmit part of force to the support legs when a patient lies down or gets up, and part of force is transmitted to the front support leg and the rear support leg which are connected with the support legs;

meanwhile, the armrests are arranged in an inclined manner, when a person lies down, the hands move along the armrests, one side of the armrests, which is close to the backrest, is lower, the armrest is suitable for the state that the user lies down gradually, and the hands can apply stable pulling force to the armrests;

when the people got up, at the initial stage that gets up, exerted pulling force to the handrail, on the pulling force can be dispersed back landing leg and front and back landing leg (back landing leg, back landing leg are given first place to), compare traditional design power most concentrate on the landing leg of back, its focus leans on forward, stability is higher.

After the person sits, the front arms are supported on the armrests to exert force, the gravity of the person is exerted on the armrests, and the force is transmitted in the same way; in the process of gradually standing, as the positions of the arms of the person gradually rise and the positions of the person gradually move forwards, the height of the armrests also gradually rises, and better support can be provided;

therefore, the design of the armrest is fully considered from the aspects of mechanical stability and force generation due to the change of the lying posture of a person, and the effects of reliability and convenience are considered.

Drawings

FIG. 1 is a front view of embodiment 1;

FIG. 2 is a left side view of embodiment 1;

FIG. 3 is a perspective view of embodiment 1;

fig. 4 is a front view of the headrest, the water receiving unit of embodiment 1;

fig. 5 is a bottom view of the headrest, the water receiving unit of embodiment 1;

fig. 6 is a right side view of the headrest, the water receiving unit of embodiment 1;

fig. 7 is a perspective view of a headrest and a water receiving unit of embodiment 1;

fig. 8 is a perspective view of a headrest and a water receiving unit according to embodiment 1.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the implementations of the present application, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Example 1

Referring to fig. 1-8, an ophthalmologic chair comprises a seat plate 1, a backrest 2, a pair of legs 3, and a pair of armrests 4, wherein the backrest 2 is a backrest with an adjustable angle with the seat plate 1; the legs 3 are located below two sides of the seat plate 1, the legs 3 comprise front legs 31 and rear legs 32, the rear legs 32 extend to the rear part of the seat plate 1, the front legs 31 extend to the front part of the seat plate 1, the front legs and the rear legs extend out of the seat plate to improve the stability of the chair and avoid too large distance between the center of gravity and the front legs and the rear legs, the armrest 4 comprises an armrest body and front legs 41 and rear legs 42 connected with the armrest body, the front legs 41 and the rear legs 42 are located between the front legs 31 and the rear legs 32, and the front legs 41, the rear legs 42, the front legs 31 and the rear legs 32 are all in contact with the ground; the armrest bodies are arranged in an inclined manner, and the height of one side, close to the backrest 2, of each armrest body is lower than that of one side, far away from the backrest 2, of each armrest body; the front leg 41 is fixedly connected to the front leg 31, and the rear leg 42 is fixedly connected to the rear leg 32.

Generally, the angle of the inclined arrangement of the handrail body is not too large, and the included angle between the horizontal plane and the handrail body is preferably 10-30 degrees, and more preferably 15-25 degrees. In this embodiment 18.62.

This angle is designed to take into account the relative positions of the torso and hands of most adults, particularly the elderly, when lying down, so that the hands will naturally contact the arms 4 when the torso is lying on the backrest 2, and will maintain constant, easy-to-apply contact with the arms 4 as the angle of the backrest 2 changes.

The support legs of the armrests 4 extend to positions between the front support leg and the rear support leg, when a patient lies down or gets up, the armrests 4 are drawn, partial force is transmitted to the support legs by the armrests 4, and partial force is transmitted to the front support leg and the rear support leg which are connected with the support legs;

meanwhile, the armrests 4 are arranged in an inclined manner, when a person lies down, the hands move along the armrests 4, one side of the armrests 4 close to the backrest 2 is lower, the armrest is suitable for the state that the user lies down gradually, and the hands can apply stable pulling force to the armrests 4;

when a person gets up, tension is applied to the handrail 4 in the initial stage of getting up, the tension is dispersed to the rear supporting leg 42 and the front and rear supporting legs (mainly the rear supporting leg 42 and the rear supporting leg 32), and compared with the traditional design, the tension is mostly concentrated on the rear supporting leg 32, the gravity center of the tension is forward, and the stability is higher.

After the person sits, the forearms are supported on the armrests 4 to exert force, the gravity of the person is exerted on the armrests 4, and the force is transmitted in the same way; in the process of gradually standing, as the arm position of the person gradually rises and the position of the person gradually moves forwards, the arm is not supported on the armrest 4 any more, but the force is exerted on the armrest 4 through the hand and the wrist, and in the process of changing the posture of the person, the height of the armrest 4 also gradually rises, so that better support can be provided;

therefore, the design of the armrest 4 is sufficiently considered in terms of mechanical stability and force from the change in posture of the person when lying down, and the effects of reliability and convenience are both achieved.

In this embodiment, the armrest body includes an armrest body 43, a U-shaped section 44 opened toward the backrest 2, the rear leg 42 is connected to one end of the armrest body 43, the front leg 41 is connected to one end of the U-shaped section 44, and the other end of the U-shaped section 44 is connected to the other end of the armrest body 43. The design of the U-shaped section 44 is such that the elderly can hold it to pull the body forward to reach the ground with the feet and then the forearms, hands, wrists etc. and the armrests 4 act to gradually get up. Therefore, the U-shaped section 44 is extended to the front of the seat plate 1 for more convenient foot landing so that the body can be more conveniently moved forward.

Preferably, the seat pan 1 comprises a seat pan body 11 and a seat pan support frame 12 fixedly connected with the seat pan body 11, wherein the seat pan support frame 12 is fixedly connected with the front support leg 41; the supporting legs 3 further comprise connecting rods 33 connecting the front supporting legs 31 and the rear supporting legs 32, the supporting legs 3 are of a U-shaped structure with a downward opening, and the seat plate supporting frame 12 is fixedly connected with the connecting rods 33. In the embodiment, the front and rear support legs, the front and rear support feet and the seat plate supporting frame are preferably made of steel pipes or aluminum alloy pipes;

the seat board 1 is fixedly connected with the front support leg 41 and the front and rear support legs through the seat board supporting frame 12, so that the gravity of the seat board 1 and people on the seat board 1 can be dispersed on the front support leg 41 and the front and rear support legs and can be uniformly distributed on two sides, the integral stability is improved, and most gravity is prevented from being borne by the front and rear support legs;

meanwhile, since the rear leg 42 and the rear leg 32 are fixedly connected, the gravity of the seat plate 1 can be dispersed to the rear leg 32, and in this case, 8 ground contact points are provided, which is more stable and reliable.

As another core point of the present embodiment, a headrest 5, a C-shaped link 6, and a lifting mechanism 7 are connected to the backrest 2; the lifting mechanism 7 is fixed on the back surface of the backrest 2, the headrest 5 is hinged with one end of the C-shaped connecting piece 6 in a lockable manner, and the other end of the C-shaped connecting piece 6 is hinged with the lifting mechanism 7 in a lockable manner;

when the lifting mechanism 7 is lowered to the lowest position, the top of the backrest 2 enters the inside of the C-shaped connecting piece 6 from the opening of the C-shaped connecting piece 6.

That is, the opening of the C-shaped link 6 is directed towards the backrest 2. this design is advantageous for particularly short patients, as well as for extremely short patients, by adjusting the lifting mechanism 7 to lower the C-shaped link 6 to an extreme lower position, in which the top of the backrest 2 enters the interior of the C-shaped link 6 from the opening of the C-shaped link 6.

Meanwhile, the C-shaped connecting piece 6, the headrest 5 and the lifting mechanism 7 are hinged in a lockable manner, so that the angle of the headrest 5 in the vertical direction can be randomly adjusted.

As another innovative point of the embodiment: the embodiment will receive water unit 8 and integrated to on headrest 5 to avoid receiving water unit 8 and headrest 5 to adjust respectively, simultaneously, a great deal of optimization has still been made to the adjustment convenience aspect of the laminating reliability, angle and the position that receives water unit 8 to this embodiment.

Specifically, the present embodiment further includes a water receiving unit 8, where the water receiving unit 8 includes a water receiver 81, a water receiver bracket, and a bracket holder, the water receiver bracket is a bracket capable of rotating in a universal direction, the bracket holder is hinged to one end of the water receiver bracket, the water receiver bracket can move and be positioned between the left side and the right side of the backrest 2 around the bracket holder, and the bracket holder is fixed to the C-shaped connecting member 6; the water receiver support is connected with an elastic part 82, and the elastic part 82 is used for drawing the water receiver support towards the direction of the headrest 5.

When a doctor of the traditional ophthalmologic chair uses the water receiver 81, the doctor must attach the water receiver 81 to the face with one hand and operate the diagnosis and treatment equipment with the other hand; although the conventional ophthalmic chair also has a water receptor stand, the stand is separated from the headrest 5 and does not have an automatic fitting capability, so that it is very inconvenient to use.

The problem is solved through the support that elastic component 82 comes universal pivoted, draws the water collector support through elastic component 82, under the effect of elastic component 82, but universal pivoted water collector support can laminate to the face, the doctor only need will receive water collector 81 adjust to the suitable position of face can, need not to continuously hold at the in-process of diagnosing.

The elastic member 82 of this embodiment is a rubber band, and the rubber band has a plurality of holes, and the adjustable tension of the elastic member 82 is realized by adjusting the combination position of the holes and the headrest 5, but in practical applications, the elastic member 82 may also be a tension spring.

Preferably, the water collector further comprises a connecting plate 83, one end of the connecting plate 83 is fixedly hinged with the C-shaped connecting piece 6, and the other end of the connecting plate 83 is fixedly hinged with the end part of the water collector bracket; a grip 51 for a person to adjust the position of the headrest 5 is provided on the back surface of the headrest 5.

In the present embodiment, "hinge in a fixable manner" and "hinge in a lockable manner" are mostly locked to a predetermined hinge angle by bolts or latches. This is conventional in the art and in practice any manner of articulation that achieves the above objectives is within the scope of the present invention.

Another difficulty with the use of the receptor 81 is that it is difficult to fit very closely to the face, and the tightening of the elastic member 82 may not be optimal for the fit of the receptor 81 to the face, although it may be possible to fit the receptor 81 to the face. In order to make the water receiver 81 and the face fit seamlessly and closely, the following method is adopted for optimization: the water receiver support comprises a first rod body 84, a second rod body 85, a plate body 86 and a support body, one end of the first rod body 84 is hinged to the connecting plate 83, the first rod body 84 and the second rod body 85 are connected through a lockable ball head connecting piece 87, the plate body 86 is fixedly connected to the end portion of the second rod body 85, a strip-shaped hole is formed in the plate body 86, and the support body is fixed to the strip-shaped hole in a position-adjustable mode; the water receiver 81 is fixed in the frame body, one end of the elastic part 82 is connected with the second rod body 85, the other end of the elastic part is connected with the headrest 5, the frame body comprises a cup body support 88 used for containing the water receiver 81, a torsion spring 89 and a base 80, the cup body support 88 and the torsion spring 89 are fixed on the base 80, the base 80 is fixed on a strip-shaped hole through a bolt, the water receiver 81 is in contact with one side of the face of a human body, and the power end of the torsion spring 89 is fixedly connected with one side of the water receiver 81 relative to the contact side.

The first stick 84 and the second stick 85 are connected through a ball head connecting piece 87, the second stick 85 is connected with an elastic piece 82, and the elastic piece 82 directly acts on the second stick 85, so that the water receiver 81 can be attached to a human face at any acceptable angle;

meanwhile, one side of the water receiver 81 is pulled outwards through the torsion spring 89, the situation that the human face is pushed outwards by the water receiver 81 when the water receiver 81 is attached to the human face is avoided (because the cup body support 88 cannot be fixed with the water receiver 81 in a seamless mode), the room where the water receiver 81 can be pushed outwards is completely tensioned through the torsion spring 89, the water receiver 81 can be attached to the human face without shaking, and the human face tightly attached to the water receiver 81 can not shift due to the acting force of the elastic piece 82 and the torsion spring 89 in two directions.

As the optimization of the embodiment, the armrests 4 are provided with soft pads 43; a cross bar 21 is arranged between the two rear supporting legs 32, an electric push rod 22 is hinged on the cross bar 21, and the power output end of the electric push rod 22 is hinged with the back of the backrest 2; the cross bar 21 extends between the rear leg 32 and the rear leg 42, and the hinge position of the air cylinder 22 is located between the rear leg 32 and the rear leg 42;

a backrest bracket 23 is fixed at the back of the backrest 2;

leveling anti-skid foot pads are arranged at the bottoms of the front support leg 41, the rear support leg 42, the front support leg 31 and the rear support leg 32.

The position of the power putter 22 of this embodiment is particularly optimized in that the point of action of the power putter 22 extends between the rear legs 32 and the rear legs 42, and the position of the cross bar 21 is important for the position of the center of gravity because the weight of the back of the person is acting on the backrest 2 and the weight of the backrest 2 is transmitted to the cross bar 21 via the power putter 22.

In the above, it is emphasized that the rear legs 42 are used for supporting a person when the person gets up or lies down, the position of the cross bar 21 is optimized, and the position of the center of gravity of the person is not changed much after the person completely lies down, so that the overall stability of the chair is very high when the posture of the person is changed.

For review:

1. the stability of the person when the person is in a posture change or lies down is closely related to the gravity center position of the chair, the gravity center position of the chair is closely related to the positions of the front and rear support legs, the cross bar 21 and the angle of the armrests 4, and at least the four times have close synergy;

2. the headrest 5 is optimized, so that the headrest can be suitable for people of different body types;

3. headrest 5 and the optimization that receives water unit 8 of present case improve the angle modulation convenience, the position control convenience that receive water unit 8, headrest 5 and the synchronization regulation convenience that receives water unit 8, receive hydrophone 81 simple operation nature and reliability.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An ophthalmologic chair comprises a seat plate, a backrest, a pair of supporting legs and a pair of armrests, wherein the backrest is a backrest with an angle adjustable with the seat plate; the seat is characterized in that the handrail comprises a handrail body and a front supporting leg and a rear supporting leg which are connected with the handrail body, the front supporting leg and the rear supporting leg are positioned between the front supporting leg and the rear supporting leg, and the front supporting leg, the rear supporting leg, the front supporting leg and the rear supporting leg are all in contact with the ground; the armrest bodies are arranged in an inclined mode, and the height of one side, close to the backrest, of each armrest body is lower than that of one side, far away from the backrest, of each armrest body; the front support legs are fixedly connected with the front support legs, and the rear support legs are fixedly connected with the rear support legs.

2. The ophthalmic chair of claim 1, wherein the armrest body comprises an armrest body, a U-shaped section open toward the backrest, the rear leg being connected to one end of the armrest body, the front leg being connected to one end of the U-shaped section, the other end of the U-shaped section being connected to the other end of the armrest body.

3. An ophthalmic chair according to claim 2, characterized in that the angle between the armrest body and the horizontal plane is 15-25 °, and the U-shaped section extends to the front of the seat plate.

4. An ophthalmic chair according to claim 1, wherein the seat plate comprises a seat plate body and a seat plate support frame fixedly connected with the seat plate body, the seat plate support frame being fixedly connected with a front leg and/or a rear leg; the landing leg still includes the connecting rod of connecting preceding landing leg and back landing leg, the landing leg is the U font structure of opening decurrent, bedplate braced frame and connecting rod fixed connection.

5. An ophthalmic chair according to claim 1, wherein a headrest, a C-shaped link, a lifting mechanism are connected to the backrest; the headrest is hinged with one end of the C-shaped connecting piece in a lockable manner, and the other end of the C-shaped connecting piece is hinged with the lifting mechanism in a lockable manner;

when the lifting mechanism descends to the lowest position, the top of the backrest enters the inside of the C-shaped connecting piece from the opening of the C-shaped connecting piece.

6. The ophthalmic chair according to claim 5, further comprising a water receiving unit, wherein the water receiving unit comprises a water receiver, a water receiver bracket, and a bracket holder, the water receiver bracket is a universal rotating bracket, the bracket holder is hinged with one end of the water receiver bracket, the water receiver bracket can move and position between the left side and the right side of the backrest around the bracket holder, and the bracket holder is fixed on the C-shaped connecting piece; the water receiver support is connected with an elastic piece, and the elastic piece is used for drawing the water receiver support towards the direction of the headrest.

7. The ophthalmic chair of claim 6, further comprising a connecting plate, one end of which is fixedly hinged to the C-shaped connecting member and the other end of which is fixedly hinged to the end of the water receptor frame; the elastic piece is an elastic piece with adjustable tension, and a holding part for a person to adjust the position of the headrest is arranged on the back of the headrest.

8. The ophthalmic chair of claim 7, wherein the water receptor bracket comprises a first rod, a second rod, a plate body and a frame body, wherein one end of the first rod is hinged to the connecting plate, the first rod and the second rod are connected through a lockable ball head connecting piece, the plate body is fixedly connected to the end of the second rod, a strip-shaped hole is formed in the plate body, and the frame body is fixed on the strip-shaped hole in a position-adjustable manner; the water receiver is fixed in the frame body, one end of the elastic piece is connected with the second rod body, and the other end of the elastic piece is connected with the headrest.

9. The ophthalmic chair according to claim 8, wherein the frame body comprises a cup body support for accommodating the water receiver, a torsion spring and a base, the cup body support and the torsion spring are fixed on the base, the base is fixed on the strip-shaped hole through a bolt, the water receiver is in contact with one side of the face of the human body, and the power end of the torsion spring is fixedly connected with one side of the water receiver opposite to the contact side.

10. An ophthalmic chair as claimed in any of claims 1 to 9, wherein the armrests are provided with cushions; a cross bar is arranged between the two rear supporting legs, an air cylinder, an oil cylinder or an electric cylinder is hinged on the cross bar, and the power output end of the oil cylinder or the electric cylinder is hinged with the back of the backrest; the cross rod extends between the rear supporting leg and the rear supporting leg, and the hinged position of the air cylinder is positioned between the rear supporting leg and the rear supporting leg;

a backrest bracket is fixed at the back of the backrest;

the bottoms of the front support leg, the rear support leg, the front support leg and the rear support leg are all provided with leveling anti-skidding foot pads.

Images