CN214968498U

CN214968498U - Otolaryngology branch of academic or vocational study is with seeing doctor chair

Info

Publication number: CN214968498U
Application number: CN202120425918.6U
Authority: CN
Inventors: 钟慧球
Original assignee: Jiangxi Provincial Peoples Hospital
Current assignee: Jiangxi Provincial Peoples Hospital
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-12-03
Anticipated expiration: 2031-02-26

Abstract

The utility model discloses a seeing-eye chair for otolaryngology department, which comprises a lifting mechanism, a backrest mechanism, a supporting mechanism and a pedal component, wherein the pedal component is drawn out from a rolling groove under the action of a rotating wheel at the outer end of a connecting rod by a pedal, a fixed block is pushed into a fixed groove to fix a rotating plate by a pull rod pushed by a handle, then the rotating wheel is rotated to drive a bevel gear to rotate by the rotating wheel, a rotating screw rod is rotated to drive a lifting screw rod to drive a cushion to move upwards, then a rotary knob II drives an extension screw rod to drive a rotating slider to drive a supporting rod to move under the action of the slider, so that the backrest mechanism is put down, a top cap is pushed out to support, the problems that the prior art can not adjust different positions according to different patients, the function of influencing the treatment efficiency of doctors to the patients is influenced, and some patients need to raise the head when in treatment, but the patients can raise the head very uncomfortably, and the foot pedal is not used, and the foot pedal is too long, so that the problem of more occupied area is caused.

Description

Otolaryngology branch of academic or vocational study is with seeing doctor chair

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an otolaryngology branch of academic or vocational study is with seeing a doctor chair.

Background

The medical apparatus refers to an instrument, equipment, appliance, material or other articles which are used on the human body singly or in combination, comprises required software, the functions of the apparatus used on the body surface and in the human body are not obtained by means of pharmacology, immunology or metabolism, but the means can participate and play a certain auxiliary role, and aims to achieve the purposes of preventing, diagnosing, treating, monitoring and relieving diseases, the otolaryngological department is a surgical department for diagnosing and treating ears, noses, pharynx, larynx and related head and neck regions, the medical departments mutually permeate and promote along with the progress and development of science and technology, the scope of the otolaryngological department is expanded, the otolaryngological department needs to use a diagnosis chair when checking patients, but the prior art can not adjust different positions according to different patients, the function of influencing the treatment efficiency of doctors to the patients, and the heads of some patients need to be lifted up when treating, however, the patient can not raise the head of the patient himself or herself, and the foot pedal is not used, so that the foot pedal is too long, and therefore the occupied area is large.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects of the prior art, the examination chair for the otolaryngological department is provided, so that the problems that different positions cannot be adjusted according to different patients at present, the treatment efficiency of a doctor on the patients is affected, the heads of some patients need to be raised during treatment, the heads of the patients are raised by the patients themselves to be uncomfortable, and the occupied area is large due to the overlong length of the pedals of the patients when the pedals are not used are solved.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides an otolaryngology branch of academic or vocational study is with seeing a doctor chair, its characterized in that: comprises a lifting mechanism, a backrest mechanism, a supporting mechanism and a pedal assembly;

the backrest mechanism comprises a back cushion, a rotating hole, a pillow, a discharge groove, a top cap, a second bearing, a screw hole, a screw rod and a first knob, wherein the rotating hole is formed in the lower end of the back cushion, the pillow is arranged at the upper end of the back cushion, the discharge groove is formed in the middle of the back cushion, the top cap is arranged in the discharge groove, the second bearing is arranged at the lower end of the top cap, the screw hole is formed in the lower end of the discharge groove, the interior of the screw hole is rotatably connected with the screw rod, the upper end of the screw rod is fixedly connected with the second bearing, and the lower end of the screw rod is fixedly connected with the first knob;

the supporting mechanism comprises a first knuckle arm, a second knuckle arm, a sliding groove, a baffle, an insertion groove, an insertion block, supporting legs, a rotating screw hole, a supporting screw rod, a power-assisted rotating ring, a bearing III, a supporting pad, a sliding block, a supporting rod, a connecting bearing, a rotating sliding block, a lengthened screw rod, a bearing IV, a connecting plate and a knob II, wherein the right end of the first knuckle arm is fixedly connected with the second knuckle arm through a hinge, the sliding groove is arranged at the upper end of the first knuckle arm and the upper end of the second knuckle arm, the baffle is arranged at the left lower end of the first knuckle arm, the insertion groove is arranged at the lower end of the baffle, the insertion groove is movably connected with the insertion block, the right end of the second knuckle arm is fixedly connected with the supporting legs through a hinge, the rotating screw hole is arranged at the lower end of the supporting legs, the inside of the rotating screw hole is rotatably connected with the supporting screw rod, the power-assisted rotating ring is arranged at the lower end of the supporting screw rod, and the lower end of the supporting screw rod is fixedly connected with the supporting pad through the bearing III, the support rod is connected with the sliding groove in a sliding mode through a sliding block, the upper end of the support rod is fixedly connected with the rotating sliding block through a connecting bearing, the interior of the rotating sliding block is rotatably connected with the lengthening screw rod, the lower end of the lengthening screw rod is fixedly connected with the connecting plate through a bearing IV, the left end of the connecting plate is fixedly connected with the back cushion, and the upper end of the lengthening screw rod is provided with a knob II;

the pedal assembly comprises a pedal, a fixed groove, a movable groove, a rotating plate, a rotating hole, a collecting groove, a pulling rod, a fixed block, a handle, a connecting rod and a rotating wheel, the end face of the left upper end of the pedal is provided with the fixed groove, the outer end of the right upper end of the pedal is provided with the movable groove, the middle of the pedal is provided with the rotating plate, the lower end of the rotating plate is provided with the rotating hole, the left end of the rotating hole is provided with the collecting groove, the pulling rod is arranged in the rotating hole, the left end of the pulling rod is provided with the fixed block, the outer end of the fixed block is movably connected with the fixed groove, the right end of the pulling rod is provided with the handle, the right end of the pedal is provided with the connecting rod, the right end face of the connecting rod is provided with the rotating wheel, and the outer end face of the rotating wheel is connected with the rolling groove in a rolling mode.

Further, the ascending mechanism comprises a base plate, a first bearing, a rotating screw, an ascending screw, a bevel gear, a bearing seat, a rotating wheel, a transmission rod, a cushion, a rolling groove, a groove and a rotating shaft, wherein the first bearing is arranged at the upper end of the base plate, the rotating screw is arranged at the middle part of the first bearing, the outer end of the rotating screw is rotatably connected with the ascending screw, the bearing seat is arranged on the upper end face of the base plate, the transmission rod is arranged at the upper end of the bearing seat, the bevel gear is fixedly connected with the rotating wheel through the transmission rod, the cushion is arranged on the upper end face of the ascending screw, the rolling groove is arranged inside the cushion, the groove is formed in the lower left end of the rolling groove, and the rotating shaft is arranged at the right end of the cushion.

Furthermore, the diameter size of the groove is smaller than that of the rotating wheel, and the angle size of the inclined plane of the groove is 60-90 degrees.

Furthermore, the width of the fixing groove is one half of the length of the fixing block.

Furthermore, the height dimension of the supporting rod is equal to the distance dimension from the upper end surface of the first arm to the seat cushion.

Further, the height dimension of the rolling groove is larger than the thickness dimension of the pedal and the rotating plate, and the length dimension of the rolling groove is smaller than the distance dimension from the outer end face of the pedal to the rotating wheel.

Further, the supporting pad is made of rubber materials.

Furthermore, the support rod is made of an aluminum alloy material.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

1. the utility model discloses a bevel gear drives and rotates the screw rod and rotate and drive the screw rod that will rise and reciprocate for the screw rod that rises drives the cushion and reciprocates, has solved and has now can not adjust different positions according to the patient of difference, influences the problem of the function of doctor to the efficiency that the patient healed.

2. The utility model discloses a rotating knob and driving knob one and release the discharge tank with the hood, solved some current patients and need the cooperation to examine the head when the treatment, but through the very uncomfortable problem of patient's oneself process with the head raise up.

3. The utility model discloses a fold first festival arm and second festival arm through the hinge, turn over a supporting legs support again, rotatory extension screw drives the slider that rotates the bracing piece through the slider of lower extreme again and removes to this angle of adjusting the cushion has solved the current angle that can not adjust the cushion according to the patient of difference, influences treatment.

4. The utility model discloses a fixed block of pulling pole left end fixes the rotor plate in the footboard upper end, inserts the roll inslot portion through rotating the wheel again, has solved current pedal not using because of its pedal length overlength, leads to the more problem of area.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the lifting mechanism of the present invention;

fig. 3 is a schematic view of the internal structure of the backrest mechanism of the present invention;

fig. 4 is a schematic view of the internal structure of the supporting mechanism of the present invention;

FIG. 5 is a front view of the pedal assembly of the present invention;

FIG. 6 is a schematic side view of the pedal assembly of the present invention;

in the figure: a lifting mechanism-1, a backrest mechanism-2, a supporting mechanism-3, a pedal component-4, a bottom plate-11, a bearing I-12, a rotating screw-13, a lifting screw-14, a bevel gear-15, a bearing seat-16, a rotating wheel-17, a transmission rod-18, a cushion-19, a rolling groove-110, a slot-111, a rotating shaft-112, a cushion-21, a rotating hole-22, a pillow-23, a discharge groove-24, a top cap-25, a bearing II-26, a screw hole-27, a screw rod-28, a knob I-29, a first knuckle arm-31, a second knuckle arm-32, a sliding groove-33, a baffle-34, an insertion groove-35, an insertion block-36, a supporting leg-37, a rotating screw hole-38, a rotating screw hole-34, a rotating screw rod-11, a rotating shaft-21, a cushion-22, a pillow-23, a pillow-24, a top cap-25, a screw, a support leg-37, a screw hole-28, a screw, a support, a, The device comprises a support screw rod-39, a power-assisted rotating ring-310, a bearing three-311, a support pad-312, a slide block-313, a support rod-314, a connecting bearing-315, a rotating slide block-316, a lengthened screw rod-317, a bearing four-318, a connecting plate-319, a knob two-320, a pedal-41, a fixed groove-42, a movable groove-43, a rotating plate-44, a rotating hole-45, a collecting groove-46, a pulling rod-47, a fixed block-48, a handle-49, a connecting rod-410 and a rotating wheel-411.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, the present invention provides a viewing chair for otolaryngological department, which is characterized in that: comprises a lifting mechanism 1, a backrest mechanism 2, a supporting mechanism 3 and a pedal assembly 4;

the backrest mechanism 2 comprises a back cushion 21, a rotating hole 22, a pillow 23, a discharge groove 24, a top cap 25, a second bearing 26, a screw hole 27, a screw rod 28 and a first knob 29, wherein the rotating hole 22 is formed in the lower end of the back cushion 21, the pillow 23 is arranged at the upper end of the back cushion 21, the discharge groove 24 is formed in the middle of the back cushion 21, the top cap 25 is arranged in the discharge groove 24, the second bearing 26 is arranged at the lower end of the top cap 25, the screw hole 27 is formed in the lower end of the discharge groove 24, the interior of the screw hole 27 is rotatably connected with the screw rod 28, the upper end of the screw rod 28 is fixedly connected with the second bearing 26, and the lower end of the screw rod 28 is fixedly connected with the first knob 29;

the supporting mechanism 3 comprises a first knuckle arm 31, a second knuckle arm 32, a sliding groove 33, a baffle 34, an insertion groove 35, an insertion block 36, a supporting leg 37, a rotary screw hole 38, a supporting screw rod 39, a power-assisted swivel 310, a bearing III 311, a supporting pad 312, a sliding block 313, a supporting rod 314, a connecting bearing 315, a rotary sliding block 316, a lengthened screw 317, a bearing IV 318, a connecting plate 319 and a knob II 320, wherein the right end of the first knuckle arm 31 is fixedly connected with the second knuckle arm 32 through a hinge, the upper ends of the first knuckle arm 31 and the second knuckle arm 32 are provided with the sliding groove 33, the left lower end of the first knuckle arm 31 is provided with the baffle 34, the lower end of the baffle 34 is provided with the insertion groove 35, the inside of the insertion groove 35 is movably connected with the insertion block 36, the right end of the second knuckle arm 32 is fixedly connected with the supporting leg 37 through a hinge, the lower end of the supporting leg 37 is provided with the rotary screw hole 38, the inside of the rotary screw hole 38 is rotatably connected with the supporting screw rod 39, the lower end of the supporting screw rod 39 is provided with the power-assisted swivel 310, the lower end of the supporting screw 39 is fixedly connected with the supporting pad 312 through a bearing III 311, the supporting rod 314 is slidably connected with the sliding groove 33 through a sliding block 313, the upper end of the supporting rod 314 is fixedly connected with a rotating sliding block 316 through a connecting bearing 315, the inside of the rotating sliding block 316 is rotatably connected with a lengthening screw 317, the lower end of the lengthening screw 317 is fixedly connected with a connecting plate 319 through a bearing IV 318, the left end of the connecting plate 319 is fixedly connected with the back cushion 21, and the upper end of the lengthening screw 317 is provided with a knob II 320;

pedal component 4 includes footboard 41, fixed slot 42, activity groove 43, rotor plate 44, rotatory hole 45, collecting vat 46, pulling rod 47, fixed block 48, handle 49, connecting rod 410 and rotating wheel 411, the terminal surface is provided with fixed slot 42 in the upper left end of footboard 41, footboard 41 upper right end outer end is provided with activity groove 43, footboard 41 middle part is provided with rotor plate 44, rotor plate 44 lower extreme is provided with rotatory hole 45, rotatory hole 45 left end is provided with collecting vat 46, the inside pulling rod 47 that is provided with of rotatory hole 45, pulling rod 47 left end is provided with fixed block 48, and fixed block 48 outer end and fixed slot 42 swing joint, pulling rod 47 right-hand member is provided with handle 49, footboard 41 right-hand member is provided with connecting rod 410, connecting rod 410 right-hand member is provided with rotating wheel 411, the outer terminal surface of rotating wheel 411 and rolling groove 110 roll connection.

The lifting mechanism 1 comprises a bottom plate 11, a first bearing 12, a rotating screw 13, a lifting screw 14, a bevel gear 15, a bearing seat 16, a rotating wheel 17, a transmission rod 18, a cushion 19, a rolling groove 110, a groove 111 and a rotating shaft 112, wherein the first bearing 12 is arranged at the upper end of the bottom plate 11, the rotating screw 13 is arranged in the middle of the first bearing 12, the outer end of the rotating screw 13 is rotatably connected with the lifting screw 14, the bearing seat 16 is arranged on the upper end face of the bottom plate 11, the transmission rod 18 is arranged at the upper end of the bearing seat 16, the bevel gear 15 is fixedly connected with the rotating wheel 17 through the transmission rod 18, the cushion 19 is arranged at the upper end face of the lifting screw 14, the rolling groove 110 is arranged inside the cushion 19, the groove 111 is arranged at the left lower end of the rolling groove 110, and the rotating shaft 112 is arranged at the right end of the cushion 19, so that the height of the whole seat can be conveniently adjusted to adapt to patients with different conditions.

The diameter of the slot 110 is smaller than that of the rotating wheel 411, and the angle of the inclined plane of the slot 110 is 60-90 degrees, so that the rotating wheel 411 is prevented from being pulled out of the slot 110, a patient can conveniently place feet on the upper end of the rotating plate 44, and the patient feels more comfortable.

The width of the fixing groove 42 is half of the length of the fixing block 48, so that the fixing block 48 can be inserted into the fixing groove 42 and the rotating plate 44 can be fixed together.

The height of the support rod 314 is equal to the distance from the upper end surface of the first arm 31 to the seat cushion 18, so that the back cushion 21 can be placed on the same horizontal plane with the seat cushion 19, and a patient can lie down conveniently.

The height dimension of the rolling groove 110 is greater than the thickness dimension of the pedal 41 plus the rotating plate 44, and the length dimension of the rolling groove 110 is less than the distance dimension from the outer end face of the pedal 41 to the rotating wheel 411, so that the pedal assembly 4 can be conveniently accommodated in the rolling groove 110 and can be conveniently pulled out.

The supporting pad 312 is made of rubber, and has good flexibility, high durability and strong friction.

The support rod 314 is made of an aluminum alloy material, so that the hardness is high and the bearing capacity is strong.

This patent the supporting pad 312 adopts rubber material, indicates that the high elasticity polymer material that has reversible deformation, is rich in elasticity at room temperature, can produce great deformation under very little exogenic action, can the reconversion after removing external force, and rubber belongs to completely amorphous polymer, and its glass-transition temperature is low, and molecular weight is often very big, is greater than several hundred thousand materials.

The working principle is as follows: the user firstly rotates the rotating wheel 17 to drive the bevel gear 15 to rotate through the transmission rod 18 on the bearing seat 16, then the bevel gear 15 drives the rotating screw 13 to rotate through the first bearing 12 on the upper end of the bottom plate 11, the rotating screw 13 rotates to drive the lifting screw 14 to drive the cushion 19 to move up and down, and the power-assisted rotating ring 310 drives the supporting screw 39 to rotate, so that the supporting screw 39 drives the supporting pad 312 to move downwards to adjust the supporting height, so as to adjust the proper height, then the second knob 320 is rotated according to the condition of the patient to drive the second knob 320 to rotate under the action of the fourth bearing 318 on the lower end of the connecting plate 319, so that the rotating slide block 316 is driven to move, and the rotating slide block 316 drives the supporting rod 314 to move under the action of the slide block 313 on the lower end and the slide groove 33 through the connecting bearing 315, so as to adjust the angle of the back cushion 21, if the patient needs to check by raising his head, the first knob 29 is rotated to drive the screw 28 to rotate through the second bearing 26 through the screw hole 27, so that the top cap 25 is pushed out of the discharge groove 24 to support the waist of the patient, the force of raising the head of the patient is reduced to avoid discomfort, then when the patient is not used, the pull rod 47 is pulled through the pull handle 49 to pull out the fixed block 48 to enter the collecting groove 46, then the rotating plate 44 is rotated to enable the rotating plate 44 to coincide with the pedal 41, then the pedal 41 is pushed to be inserted into the fixed groove 42 for fixing, then the connecting rod 410 is pushed to be pushed into the rolling groove 110 under the action of the rotating wheel 411 for collecting, then the supporting leg 37 is bent under the action of the hinge to be positioned on the same horizontal plane with the second joint arm 32, then the second joint arm 32 is bent through the hinge to enable one end of the supporting leg 37 to be placed into the baffle 34, and then the insertion block 36 is inserted into the insertion groove 35 for fixing, thereby completing the collection.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A seeing and examining chair for otolaryngology department is characterized in that: comprises a lifting mechanism (1), a backrest mechanism (2), a supporting mechanism (3) and a pedal assembly (4);

the backrest mechanism (2) comprises a back cushion (21), a rotating hole (22), a pillow (23), a discharge groove (24), a top cap (25), a second bearing (26), a screw hole (27), a screw rod (28) and a first knob (29), wherein the rotating hole (22) is formed in the lower end of the back cushion (21), the pillow (23) is arranged at the upper end of the back cushion (21), the discharge groove (24) is formed in the middle of the back cushion (21), the top cap (25) is arranged in the discharge groove (24), the second bearing (26) is arranged at the lower end of the top cap (25), the screw hole (27) is formed in the lower end of the discharge groove (24), the screw hole (27) is rotatably connected with the screw rod (28), the upper end of the screw rod (28) is fixedly connected with the second bearing (26), and the lower end of the screw rod (28) is fixedly connected with the first knob (29);

the supporting mechanism (3) comprises a first section arm (31), a second section arm (32), a sliding groove (33), a baffle plate (34), an insertion groove (35), an insertion block (36), a supporting leg (37), a rotary screw hole (38), a supporting screw rod (39), a power-assisted rotating ring (310), a bearing III (311), a supporting pad (312), a sliding block (313), a supporting rod (314), a connecting bearing (315), a rotating sliding block (316), a lengthened screw rod (317), a bearing IV (318), a connecting plate (319) and a knob II (320), wherein the right end of the first section arm (31) is fixedly connected with the second section arm (32) through a hinge, the sliding groove (33) is arranged at the upper end of the first section arm (31) and the upper end of the second section arm (32), the baffle plate (34) is arranged at the lower left end of the first section arm (31), the insertion groove (35) is arranged at the lower end of the baffle plate (34), and the inside of the insertion groove (35) is movably connected with the insertion block (36), the right end of the second arm (32) is fixedly connected with a supporting leg (37) through a hinge, a rotary screw hole (38) is formed in the lower end of the supporting leg (37), the inside of the rotary screw hole (38) is rotatably connected with a supporting screw rod (39), a power-assisted rotating ring (310) is arranged at the lower end of the supporting screw rod (39), the lower end of the supporting screw rod (39) is fixedly connected with a supporting pad (312) through a bearing III (311), the supporting bar (314) is slidably connected with a sliding groove (33) through a sliding block (313), the upper end of the supporting bar (314) is fixedly connected with a rotating sliding block (316) through a connecting bearing (315), the inside of the rotating sliding block (316) is rotatably connected with a lengthening screw rod (317), the lower end of the lengthening screw rod (317) is fixedly connected with a connecting plate (319) through a bearing IV (318), and the left end of the connecting plate (319) is fixedly connected with a back cushion (21), a second knob (320) is arranged at the upper end of the lengthened screw rod (317);

the pedal assembly (4) comprises a pedal (41), a fixing groove (42), a movable groove (43), a rotating plate (44), a rotating hole (45), a collecting groove (46), a pulling rod (47), a fixing block (48), a handle (49), a connecting rod (410) and a rotating wheel (411), wherein the inner end face of the upper left end of the pedal (41) is provided with the fixing groove (42), the outer end of the upper right end of the pedal (41) is provided with the movable groove (43), the rotating plate (44) is arranged in the middle of the pedal (41), the lower end of the rotating plate (44) is provided with the rotating hole (45), the collecting groove (46) is arranged at the left end of the rotating hole (45), the pulling rod (47) is arranged inside the rotating hole (45), the left end of the pulling rod (47) is provided with the fixing block (48), the outer end of the fixing block (48) is movably connected with the fixing groove (42), the handle (49) is arranged at the right end of the pulling rod (47), the right end of the pedal (41) is provided with a connecting rod (410), the right end of the connecting rod (410) is provided with a rotating wheel (411), and the outer end face of the rotating wheel (411) is in rolling connection with the rolling groove (110).

2. The otolaryngological viewing chair of claim 1, wherein: the lifting mechanism (1) comprises a base plate (11), a first bearing (12), a rotating screw (13), a lifting screw (14), a bevel gear (15), a bearing seat (16), a rotating wheel (17), a transmission rod (18), a cushion (19), a rolling groove (110), a slot (111) and a rotating shaft (112), wherein the first bearing (12) is arranged at the upper end of the base plate (11), the rotating screw (13) is arranged in the middle of the first bearing (12), the outer end of the rotating screw (13) is rotatably connected with the lifting screw (14), the bearing seat (16) is arranged on the upper end face of the base plate (11), the transmission rod (18) is arranged on the upper end of the bearing seat (16), the bevel gear (15) is fixedly connected with the rotating wheel (17) through the transmission rod (18), the cushion (19) is arranged on the upper end face of the lifting screw (14), and the rolling groove (110) is arranged inside the cushion (19), the left lower end of the rolling groove (110) is provided with a slot (111), and the right end of the cushion (19) is provided with a rotating shaft (112).

3. An otolaryngological viewing chair according to claims 1-2 wherein: the diameter of the slot (110) is smaller than that of the rotating wheel (411), and the angle of the inclined plane of the slot (110) ranges from 60 degrees to 90 degrees.

4. The otolaryngological viewing chair of claim 1, wherein: the width dimension of the fixing groove (42) is one half of the length dimension of the fixing block (48).

5. An otolaryngological viewing chair according to claims 1-2 wherein: the height of the supporting rod (314) is equal to the distance from the upper end surface of the first arm (31) to the seat cushion (18).

6. An otolaryngological viewing chair according to claims 1-2 wherein: the height dimension of the rolling groove (110) is larger than the thickness dimension of the pedal (41) and the rotating plate (44), and the length dimension of the rolling groove (110) is smaller than the distance dimension from the outer end face of the pedal (41) to the rotating wheel (411).