Frontal mirror for ear-nose-throat department

Abstract

The invention provides a frontal mirror for the ear-nose-throat department, and belongs to the field of frontal mirror equipment. Comprising a circular shell; a first lens and a second lens are arranged in the circular shells, the outer surface of the first lens is fixedly connected to the interiors of the circular shells, a multiple adjusting mechanism is arranged on the outer side of the second lens and comprises two first rectangular blocks, and the inner walls of the two circular shells are jointly and rotationally connected with a rotating shaft; and the outer surface of the rotating shaft is fixedly connected with a rotating gear, four second rectangular blocks and four transmission gears are arranged in the circular shell, the outer surfaces of every two transmission gears are engaged with a transmission toothed belt, and the inner walls of every two second rectangular blocks are jointly and rotationally connected with a threaded shaft. According to the forehead mirror, it can be guaranteed that when a doctor uses the forehead mirror, the distance between the first lens and the second lens can be adjusted according to different requirements of different doctors, the purpose of magnifying the part, needing to be observed, of a patient is achieved, and the doctor can see more clearly when using the forehead mirror.

Description

Technical Field

[0001] The invention relates to the field of forehead mirror equipment, and more specifically to a forehead mirror used in otolaryngology. Background Art

[0002] A forehead mirror is a medical examination tool, usually consisting of a headband and a mirror body. There is a small circular hole in the center of the mirror body. It uses a concave reflector to focus light so that the doctor can observe the ears, nose, throat and other parts through the small hole. The mirror surface of the forehead mirror is concave, which can reflect and focus the light to the area that needs to be examined.

[0003] At present, when the existing forehead mirror for otolaryngology is in use, it may not be clear due to the reasons of the equipment itself and external factors. For example, when the forehead mirror is in use, although it can reflect and focus the light on the examined area, the picture that the doctor can see through the glass in the small hole is still normal, and the picture of the examined area cannot be enlarged. In addition, when the doctor diagnoses the patient in winter, the exhaled hot air will be blocked by the mask, and the hot air will flow to the doctor's eyes through the gap between the mask and the bridge of the nose. Therefore, the exhaled hot air will condense on the glass of the forehead mirror, and the white mist produced will make the doctor unable to clearly observe the patient's sick area. In addition, when the doctor is making a diagnosis, he will wear protective equipment such as a mask, and the forehead mirror can usually only protect one eye to ensure that the patient's saliva will not splash into the doctor's eyes, while there is no protection for the other eye. The saliva produced by the patient's discomfort cough can easily splash into the doctor's eyes, thus affecting the doctor's diagnosis. Summary of the invention

[0004] In view of the problem in the prior art that when a forehead mirror is used, a doctor may not be able to clearly observe the diseased area of ​​the patient due to external factors and defects in the device itself, an object of the present invention is to provide a forehead mirror for otolaryngology.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A forehead mirror for otolaryngology, comprising a circular shell; a first lens and a second lens are respectively arranged inside the circular shell, the outer surface of the first lens is fixedly connected to the inside of the circular shell, and a magnification adjustment mechanism is arranged on the outer side of the second lens;

[0007] The multiple adjustment mechanism includes two first rectangular blocks, the inner walls of the two circular shells are rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a rotating gear, four second rectangular blocks and four transmission gears are respectively arranged inside the circular shell, the outer surfaces of every two transmission gears are meshed with a transmission toothed belt, the inner walls of every two second rectangular blocks are rotatably connected with a threaded shaft, the outer surface of each threaded shaft is threadedly connected with a moving block, a transmission assembly is commonly arranged above the two moving blocks, and a processing mechanism is arranged above the moving block;

[0008] The processing mechanism includes a first fixed cylinder and a second fixed cylinder, the inner wall of the first fixed cylinder is rotatably connected to the first support shaft, the outer surface of the first support shaft is fixedly connected to the first gear, the outer surface of the first gear and the outer surface of the first support shaft are commonly fixedly connected to a spring, the outer surface of the spring is fixedly connected to a fixed plate, the end of the first gear away from the spring is fixedly connected to a transmission shaft, the inner wall of the circular shell is rotatably connected to the second support shaft, the end of the second support shaft away from the second fixed cylinder is fixedly connected to a cleaning plate, a limiting assembly is provided on the outside of the transmission shaft, a releasing assembly is provided on the outside of the second fixed cylinder, a gear assembly is provided inside the first fixed cylinder, and a protective assembly is provided on the outside of the circular shell.

[0009] Optionally, the outer surfaces of the two first rectangular blocks are commonly fixedly connected to the inner wall of the circular shell, the outer surface of each of the second rectangular blocks is fixedly connected to the inner wall of the circular shell, wherein the inner walls of the two transmission gears are fixedly connected to the outer surface of the rotating shaft, and the inner walls of the other two transmission gears are respectively fixedly connected to the outer surfaces of the two threaded shafts.

[0010] Optionally, the transmission assembly includes two connecting plates, the outer surface of each connecting plate is in contact with the inner wall of the moving block, the side surfaces of the two connecting plates close to each other are fixedly connected with a fixing ring, the outer surface of each fixing ring is in contact with the outer surface of the second lens, the outer surface of each connecting plate is slidably connected to the interior of the circular shell, the outer surface of each connecting plate is rotatably connected to two rollers, and the outer surface of each roller is in contact with the inner wall of the circular shell.

[0011] Optionally, the outer surface of the first fixed tube and the outer surface of the second fixed tube are fixedly connected to the inner wall of the circular shell, the fixed plate is fixedly connected to the inner wall of the circular shell, and the front side of the cleaning plate contacts the back side of the circular shell and the back side of the first lens respectively.

[0012] Optionally, the limit assembly includes a circular plate fixedly connected to the outer surface of the transmission shaft, the front side of the circular plate is fixedly connected to a circular cylinder, the inner wall of the circular cylinder is fixedly connected to a force spring, the end of the force spring close to the second fixed cylinder is fixedly connected to a limit block, six circular holes are opened on the front side of the first fixed cylinder, the outer surface of the limit block contacts the inner wall of the first fixed cylinder, and the end of the transmission shaft close to the second fixed cylinder is fixedly connected to a circular shaft.

[0013] Optionally, the release assembly includes two return springs fixedly connected to the inner wall of the second fixed cylinder, the two return springs are commonly fixedly connected to an extrusion plate at one end close to the first fixed cylinder, six extrusion blocks are fixedly connected to the back of the extrusion plate, the second fixed cylinder is internally slidably connected to two connecting shafts, the outer surfaces of the two connecting shafts are commonly fixedly connected to connecting blocks, the backs of the two connecting blocks are commonly fixedly connected to the front of the extrusion plate, and the end of the circular shaft away from the first fixed cylinder passes through to the outside of the second fixed cylinder.

[0014] Optionally, the gear assembly includes a third support shaft rotatably connected to the inner wall of the circular shell, the outer surface of the third support shaft is respectively fixedly connected to the first circular gear and the second gear, the outer surface of the first circular gear is meshed with the outer surface of the first gear, the outer surface of the second support shaft is fixedly connected to the second circular gear, the outer surface of the second circular gear is meshed with the outer surface of the second gear, and a disassembly mechanism is provided on the outer side of the second gear;

[0015] The protection component includes a first fixing frame fixedly connected to the outer surface of the circular shell, the inner wall of the first fixing frame is rotatably connected to a first circular shaft, the outer surface of the first circular shaft is fixedly connected to a first transmission plate, the outer surface of the first transmission plate is fixedly connected to a circular ring, the inner wall of the circular ring is fixedly connected to a glass sheet, the outer surface of the circular ring is fixedly connected to a second fixing frame, the inner wall of the second fixing frame is rotatably connected to a second circular shaft, and the outer surface of the second circular shaft is fixedly connected to a supporting frame.

[0016] Optionally, the disassembly mechanism includes two rotating plates, and the side surfaces of the two rotating plates that are away from each other are respectively fixedly connected to the side surfaces of the two fixing rings that are close to each other, the inner walls of the two rotating plates are commonly rotatably connected with a short shaft, the side surfaces of the two fixing rings that are close to each other are fixedly connected with a rectangular plate, the inner walls of the two rectangular plates are commonly threadedly connected with a fastening shaft, the right end of the fastening shaft is fixedly connected with a rotating plate, the inner wall of the circular shell is threadedly connected with a threaded ring, and the inner wall of the threaded ring is fixedly connected with a concave mirror.

[0017] Optionally, four sliding blocks are slidably connected to the inner wall of the circular shell, and a baffle is fixedly connected to the side surfaces of every two sliding blocks that are close to each other.

[0018] Optionally, the outer surface of the circular shell is fixedly connected to a first fixed block, a fixed frame is provided above the circular shell, the inner wall of the fixed frame is rotatably connected to a first rotating shaft and a second rotating shaft respectively, the outer surface of the first rotating shaft is fixedly connected to the inner wall of the first fixed block, the outer surface of the second rotating shaft is fixedly connected to the second fixed block, and the outer surface of the second fixed block is fixedly connected to an elastic band.

[0019] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects:

[0020] In the above scheme, by setting a magnification adjustment mechanism, it can be ensured that when the doctor uses the forehead mirror, the distance between the first lens and the second lens can be adjusted according to the different needs of different doctors, thereby achieving the purpose of magnifying the part that the patient needs to observe, so that the doctor can see more clearly when using the forehead mirror.

[0021] By setting up a processing mechanism, the processing mechanism can be utilized to ensure that when a doctor uses a forehead mirror while wearing a mask in winter, the problem of fogging of the surface of the first lens due to the heat generated by the doctor's exhalation can be solved, which causes the doctor to cannot see the patient's observation area clearly and requires the doctor to frequently remove the forehead mirror for wiping.

[0022] By setting up a gear assembly, the gear assembly can transmit the force generated when the mainspring is released through the first gear, the second gear, the first circular gear and the second circular gear, so as to drive the cleaning plate to rotate more circles, thereby increasing the number of wiping times and making the first lens clearer.

[0023] By providing a disassembly mechanism, the second lens inside the circular shell can be disassembled using the disassembly mechanism. When the second lens is damaged, the second lens can be removed from the inside of the circular shell for replacement more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0025] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the threaded ring of the present invention;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the concave mirror of the present invention;

[0028] Figure 4is a schematic diagram of the three-dimensional structure of the second lens of the present invention;

[0029] Figure 5 For the present invention Figure 4 A is a partial enlarged view of the middle;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the roller of the present invention;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the transmission toothed belt of the present invention;

[0032] Figure 8 It is a three-dimensional structural schematic diagram of the cleaning plate of the present invention;

[0033] Fig. 9 It is a schematic diagram of the three-dimensional structure of the circular shell of the present invention;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure of the return spring of the present invention;

[0035] Fig.11 It is a schematic diagram of the three-dimensional structure of the first fixed cylinder of the present invention;

[0036] Fig.12 It is a left-side perspective structural diagram of the first gear of the present invention;

[0037] Fig.13 It is a schematic diagram of the three-dimensional structure of the force spring of the present invention;

[0038] Fig.14 It is a schematic diagram of the three-dimensional structure of the transmission shaft of the present invention;

[0039] Fig.15 It is a left-side stereoscopic structural schematic diagram of the mainspring of the present invention;

[0040] Fig.16 Schematic diagram of the three-dimensional structure of the glass sheet of the present invention;

[0041] Fig.17 It is a schematic diagram of the three-dimensional structure of the support frame of the present invention.

[0042] [Reference Signs]

[0043] 1. Round shell;

[0044] 2. Multiple adjustment mechanism; 201. Rotating shaft; 202. First rectangular block; 203. Rotating gear; 204. Transmission belt; 205. Transmission gear; 206. Moving block; 207. Connecting plate; 208. Roller; 209. Fixed ring; 210. Second rectangular block; 211. Threaded shaft;

[0045] 3. Processing mechanism; 301. First fixed cylinder; 302. Second fixed cylinder; 303. Cleaning plate; 304. Extrusion plate; 305. Return spring; 306. Connecting block; 307. Circular shaft; 308. Connecting shaft; 309. Extrusion block; 310. Circular hole; 311. Transmission shaft; 312. Circular cylinder; 313. Circular plate; 314. Second supporting shaft; 315. Third supporting shaft; 316. First supporting shaft; 317. Force spring; 318. Stop block; 319. First gear; 320. Second circular gear; 321. First circular gear; 322. Second gear; 323. Spring; 324. Fixed plate; 325. Glass sheet; 326. Circular ring; 327. Second circular shaft; 328. Second fixed frame; 329. Support frame; 330. First transmission plate; 331. First circular shaft; 332. First fixed frame;

[0046] 4. Disassembly mechanism; 401. Rotating plate; 402. Fastening shaft; 403. Rectangular plate; 404. Rotating plate; 405. Short shaft; 406. Threaded ring; 407. Concave mirror;

[0047] 5. First rotating axis; 6. Fixed frame; 7. Second rotating axis; 8. Second fixed block; 9. First fixed block; 10. Elastic band; 11. First lens; 12. Second lens; 13. Sliding block; 14. Baffle.

[0048] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0049] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternatives to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the present invention.

[0050] It should be noted that the references to "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments" and the like in the specification indicate that the embodiments described may include specific features, structures or characteristics, but not every embodiment may include the specific features, structures or characteristics. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it should be within the knowledge of technicians in the relevant field to implement such features, structures or characteristics in conjunction with other embodiments.

[0051] In general, a term can be understood, at least in part, from its use in context. For example, depending, at least in part, on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending, at least in part, on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0052] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” not only means “directly on” something, but also includes the meaning of being “on” something with intervening features or layers therebetween, and “on” or “over” not only means “on” or “above” something, but also includes the meaning of being “on” or “above” something with no intervening features or layers therebetween.

[0053] Additionally, spatially relative terms such as "under," "beneath," "lower," "above," "upper," and the like may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as shown in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein may be similarly interpreted accordingly.

[0054] like Figure 1 , Figures 4 to 7 As shown, an embodiment of the present invention provides a forehead mirror for otolaryngology, comprising a circular shell 1; a first lens 11 and a second lens 12 are respectively arranged inside the circular shell 1, the outer surface of the first lens 11 is fixedly connected to the inside of the circular shell 1, and a magnification adjustment mechanism 2 is arranged on the outer side of the second lens 12.

[0055] The multiple adjustment mechanism 2 includes two first rectangular blocks 202, the inner walls of the two circular shells 1 are rotatably connected with a rotating shaft 201, the outer surface of the rotating shaft 201 is fixedly connected with a rotating gear 203, and four second rectangular blocks 210 and four transmission gears 205 are respectively arranged inside the circular shell 1, the outer surfaces of every two transmission gears 205 are meshed with a transmission toothed belt 204, the inner walls of every two second rectangular blocks 210 are rotatably connected with a threaded shaft 211, the outer surface of each threaded shaft 211 is threadedly connected with a moving block 206, a transmission assembly is commonly arranged above the two moving blocks 206, and a processing mechanism 3 is arranged above the moving block 206.

[0056] like Figure 5 and Figure 7 As shown, the outer surfaces of the two first rectangular blocks 202 are commonly fixedly connected to the inner wall of the circular shell 1, and the outer surface of each of the second rectangular blocks 210 is fixedly connected to the inner wall of the circular shell 1, wherein the inner walls of the two transmission gears 205 are fixedly connected to the outer surface of the rotating shaft 201, and the inner walls of the other two transmission gears 205 are respectively fixedly connected to the outer surfaces of the two threaded shafts 211. Since the first rectangular block 202 is fixed to the inner wall of the circular shell 1, the first rectangular block 202 can play the role of connecting the circular shell 1 and the rotating shaft 201, thereby providing support force for the operation of the device.

[0057] like Figure 6 As shown, the transmission assembly includes two connecting plates 207, the outer surface of each connecting plate 207 contacts the inner wall of the moving block 206, and the side surfaces of the two connecting plates 207 close to each other are fixedly connected with a fixing ring 209, and the outer surface of each fixing ring 209 contacts the outer surface of the second lens 12, and the outer surface of each connecting plate 207 is slidably connected to the inside of the circular shell 1, and the outer surface of each connecting plate 207 is rotatably connected to two rollers 208, and the outer surface of each roller 208 contacts the inner wall of the circular shell 1. By providing a transmission assembly, power can be transmitted to the fixing ring 209 by utilizing the transmission assembly, and due to the presence of the rollers 208, the friction force on the connecting plate 207 when moving can be greatly reduced.

[0058] When in use, the medical staff fixes the device on the head of the medical staff through the elastic band 10, and then adjusts the position of the circular shell 1 and the position of the light source until the light is reflected to the part of the patient to be observed through the concave mirror 407. When the magnification of the forehead mirror needs to be adjusted, it is only necessary to rotate the rotating gear 203. After the rotating gear 203 is subjected to the rotational power, it will transmit the power to the rotating shaft 201. The rotating shaft 201 can drive the two transmission gears 205 fixed on the outer surface of the rotating shaft 201 to rotate synchronously, and each transmission gear 205 transmits the power to the other two transmission gears 205 through the transmission toothed belt 204, so that the other transmission gears 205 can be driven synchronously. The two transmission gears 205 and the two threaded shafts 211 rotate, so that the threaded connection between the threaded shaft 211 and the moving block 206 can be used to push the connecting plate 207 to move, and the connecting plate 207 is connected to the second lens 12. Therefore, when the rotating gear 203 is applied with rotational power, a series of forces will be transmitted, and finally the two connecting plates 207 will be driven to move laterally, so as to achieve the purpose of adjusting the distance between the second lens 12 and the first lens 11, thereby achieving the purpose of adjusting the magnification. In addition, when the connecting plate 207 moves, the roller 208 fixed on its outer surface will also reduce the friction during movement.

[0059] like Figure 1 , Figure 3 , Figures 8 to 10 and Fig.15 As shown, the processing mechanism 3 includes a first fixed cylinder 301 and a second fixed cylinder 302, the inner wall of the first fixed cylinder 301 is rotatably connected to the first support shaft 316, the outer surface of the first support shaft 316 is fixedly connected to the first gear 319, the outer surface of the first gear 319 and the outer surface of the first support shaft 316 are commonly fixedly connected to a spring 323, the outer surface of the spring 323 is fixedly connected to a fixed plate 324, the first gear 319 is fixedly connected to the transmission shaft 311 at one end away from the spring 323, the inner wall of the circular shell 1 is rotatably connected to the second support shaft 314, the end of the second support shaft 314 away from the second fixed cylinder 302 is fixedly connected to the cleaning plate 303, a limiting assembly is arranged on the outer side of the transmission shaft 311, a releasing assembly is arranged on the outer side of the second fixed cylinder 302, a gear assembly is arranged inside the first fixed cylinder 301, and a protective assembly is arranged on the outer side of the circular shell 1.

[0060] like Fig. 9 As shown, the outer surface of the first fixed cylinder 301 and the outer surface of the second fixed cylinder 302 are fixedly connected to the inner wall of the circular shell 1, the fixed plate 324 is fixedly connected to the inner wall of the circular shell 1, and the front side of the cleaning plate 303 is in contact with the back side of the circular shell 1 and the back side of the first lens 11 respectively. Since the first fixed cylinder 301 and the second fixed cylinder 302 are fixed to the inner wall of the circular shell 1, the stability of the equipment can be increased.

[0061] like Figures 9 to 11 As shown, the limiting assembly includes a circular plate 313 fixedly connected to the outer surface of the transmission shaft 311, the front of the circular plate 313 is fixedly connected to a circular cylinder 312, the inner wall of the circular cylinder 312 is fixedly connected to a force spring 317, the end of the force spring 317 close to the second fixed cylinder 302 is fixedly connected to a limiting block 318, six circular holes 310 are opened on the front of the first fixed cylinder 301, the outer surface of the limiting block 318 is in contact with the inner wall of the first fixed cylinder 301, and the end of the transmission shaft 311 close to the second fixed cylinder 302 is fixedly connected to a circular shaft 307. By setting a limiting assembly, the limiting assembly can be used to enable the spring 323 to store a certain force, which can be released when used.

[0062] like Figures 11 to 13As shown, the release component includes two return springs 305 fixedly connected to the inner wall of the second fixed cylinder 302, and the two return springs 305 are fixedly connected to the extrusion plate 304 at one end close to the first fixed cylinder 301, and six extrusion blocks 309 are fixedly connected to the back of the extrusion plate 304. The interior of the second fixed cylinder 302 is slidably connected to two connecting shafts 308, and the outer surfaces of the two connecting shafts 308 are fixedly connected to the connecting block 306, and the backs of the two connecting blocks 306 are fixedly connected to the front of the extrusion plate 304. The end of the circular shaft 307 away from the first fixed cylinder 301 passes through the outside of the second fixed cylinder 302. By providing a release component, the release component can be used to push the limit block 318 to move, so that the force stored in the spring 323 is released. Therefore, it is possible to freely decide when the device is in use, and to wipe the work in real time at any time.

[0063] like Figures 14 to 17 As shown, the gear assembly includes a third support shaft 315 rotatably connected to the inner wall of the circular shell 1, and the outer surface of the third support shaft 315 is respectively fixedly connected to the first circular gear 321 and the second gear 322, the outer surface of the first circular gear 321 is meshed with the outer surface of the first gear 319, the outer surface of the second support shaft 314 is fixedly connected to the second circular gear 320, the outer surface of the second circular gear 320 is meshed with the outer surface of the second gear 322, and the outer side of the second gear 322 is provided with a disassembly mechanism 4, and the protection assembly includes a third support shaft 315 fixedly connected to the inner wall of the circular shell 1, and the outer surface of the third support shaft 315 is respectively fixedly connected to the first circular gear 321 and the second gear 322, and ... third support shaft A first fixing frame 332 is provided on the outer surface of the shell 1, and the inner wall of the first fixing frame 332 is rotatably connected to the first circular shaft 331, the outer surface of the first circular shaft 331 is fixedly connected to the first transmission plate 330, the outer surface of the first transmission plate 330 is fixedly connected to the circular ring 326, the inner wall of the circular ring 326 is fixedly connected to the glass sheet 325, the outer surface of the circular ring 326 is fixedly connected to the second fixing frame 328, the inner wall of the second fixing frame 328 is rotatably connected to the second circular shaft 327, and the outer surface of the second circular shaft 327 is fixedly connected to the support frame 329.

[0064] By providing a gear assembly, the gear assembly can be utilized to increase the number of rotations of the cleaning plate 303, thereby increasing the number of rotations of the cleaning plate 303 after the mainspring 323 is energized once, and the protective assembly can protect the doctor's other eye to prevent saliva from splashing onto the doctor's eyes when the patient coughs, which not only poses a risk of infection, but also causes eye discomfort to the doctor, thereby affecting the diagnosis result.

[0065] When the doctor is using the equipment, he can rotate the circular shell 1 to flip the circular shell 1 in front of one eye of the medical staff, and then rotate the circular ring 326 to make the circular ring 326 unfold in front of the other eye, and rotate the support frame 329 to make the support frame 329 also unfold, so that the support frame 329 can be hung on the doctor's ear to provide support force, thereby ensuring that when the doctor examines the patient's throat, the saliva caused by the patient's uncomfortable cough in the throat will not splash into the doctor's eyes, thereby reducing the risk and avoiding the doctor's misdiagnosis problem. When the doctor's exhaled hot air condenses on the surface of the first lens 11, the connecting block 306 can be pressed. After the connecting block 306 is subjected to pressure, it will drive the connecting shaft 308 to move together, thereby pushing the extrusion plate 304 and the six extrusion blocks 309 fixed on the back of the extrusion plate 304 to move forward The inside of the circular hole 310 is squeezed, so that the limit block 318 inside one of the circular holes 310 can be squeezed out of the range of the circular hole 310. At this time, the limit block 318 is not restricted, so the circular plate 313 and the first gear 319 are also not restricted. Therefore, the spring 323 will release the elastic force, which will drive the first gear 319 to rotate. Under the joint action of the first gear 319, the second gear 322, the first circular gear 321 and the second circular gear 320, the cleaning plate 303 can be driven to rotate. Because the first gear 319 and the second gear 322 have more teeth than the first circular gear 321 and the second circular gear 320, the number of rotations of the cleaning plate 303 can be increased. When cleaning is not needed, stop applying pressure to the connecting block 306.

[0066] like Figure 2 , Figure 3 and Figure 6 As shown, the disassembly mechanism 4 includes two rotating plates 404, and the side surfaces of the two rotating plates 404 that are away from each other are respectively fixedly connected to the side surfaces of the two fixing rings 209 that are close to each other, the inner walls of the two rotating plates 404 are commonly rotatably connected with a short shaft 405, the side surfaces of the two fixing rings 209 that are close to each other are both fixedly connected with a rectangular plate 403, the inner walls of the two rectangular plates 403 are commonly threadedly connected with a fastening shaft 402, the right end of the fastening shaft 402 is fixedly connected with a rotating plate 401, the inner wall of the circular shell 1 is threadedly connected with a threaded ring 406, and the inner wall of the threaded ring 406 is fixedly connected with a concave mirror 407.

[0067] like Figure 5As shown, the inner wall of the circular shell 1 is slidably connected with four sliding blocks 13, and the side surfaces of each two sliding blocks 13 close to each other are fixedly connected with a baffle 14. By providing the baffle 14, the connecting plate 207 can be limited by the baffle 14 to prevent the connecting plate 207 from moving out of the range of the circular shell 1 and colliding with the concave mirror 407.

[0068] like Figure 1 As shown, the outer surface of the circular shell 1 is fixedly connected to a first fixed block 9, a fixed frame 6 is arranged above the circular shell 1, the inner wall of the fixed frame 6 is rotatably connected to a first rotating shaft 5 and a second rotating shaft 7 respectively, the outer surface of the first rotating shaft 5 is fixedly connected to the inner wall of the first fixed block 9, the outer surface of the second rotating shaft 7 is fixedly connected to a second fixed block 8, and the outer surface of the second fixed block 8 is fixedly connected to an elastic band 10. By providing the first fixed block 9, the fixed frame 6 and the second fixed block 8, the angle of the circular shell 1 can be adjusted by the second fixed block 8 and the first fixed block 9, so that the staff can align it with the light source when using it.

[0069] When damage occurs inside the device, it is only necessary to rotate the threaded ring 406 to remove the threaded ring 406 and the concave mirror 407 from the inside of the circular shell 1, and then pull out the baffle 14. Since the position of the baffle 14 is entirely determined by the sliding block 13, although there is a large space on the side of the baffle 14 away from the second lens 12, it cannot move inside and can only move to a position close to the second lens 12. When the baffle 14 is pulled out, a rotational force can be applied to the rotating gear 203 until the connecting plate 207 moves to the original position of the baffle 14, and then the connecting plate 207 can be directly pulled out to a position away from the second lens 12. However, before pulling it out, it is necessary to screw the fastening shaft 402 so that the two fixing rings 209 can be opened to stop clamping and fixing the second lens 12, thereby achieving the purpose of removing the second lens 12.

[0070] The working process of the technical solution provided by the present invention is as follows:

[0071] First, when the magnification of the forehead mirror needs to be adjusted, it is only necessary to rotate the rotating gear 203. After being subjected to the rotating power, the rotating gear 203 will transmit the power to the rotating shaft 201. The rotating shaft 201 can be used to drive the two transmission gears 205 fixed on the outer surface of the rotating shaft 201 to rotate synchronously, and each transmission gear 205 transmits the power to the other two transmission gears 205 through the transmission belt 204, so that the other two transmission gears 205 and the two threaded shafts 211 can be driven to rotate synchronously, and finally through the transmission component, the purpose of adjusting the distance between the second lens 12 and the first lens 11 is achieved, thereby achieving the purpose of adjusting the magnification.

[0072] When the doctor is using the equipment and the hot air he exhales condenses on the surface of the first lens 11, he can press the connecting block 306. After the connecting block 306 is subjected to pressure, it will drive the connecting shaft 308 to move together. Under the joint action of the limit assembly, the release assembly and the gear assembly, the cleaning plate 303 can be driven to rotate. In addition, the glass piece 325 can protect the doctor's other eye to prevent saliva from splashing onto the doctor's eyes when the patient coughs, which not only poses a risk of infection, but also causes eye discomfort to the doctor, thereby affecting the diagnosis result.

[0073] When damage occurs inside the device, it is only necessary to rotate the threaded ring 406 to remove the threaded ring 406 and the concave mirror 407 from the inside of the circular shell 1, and then pull out the baffle 14. After the baffle 14 is pulled out, a rotational force can be applied to the rotating gear 203 until the connecting plate 207 moves to the original position of the baffle 14, and then the connecting plate 207 can be directly pulled out to a position away from the second lens 12, thereby achieving the purpose of removing the second lens 12.

[0074] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention, but those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0075] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A forehead mirror for otolaryngology, comprising a circular shell; characterized in that: A first lens and a second lens are respectively arranged inside the circular shell, the outer surface of the first lens is fixedly connected to the inside of the circular shell, and a magnification adjustment mechanism is arranged on the outer side of the second lens; The multiple adjustment mechanism includes two first rectangular blocks, the inner walls of the two circular shells are rotatably connected with a rotating shaft, the outer surface of the rotating shaft is fixedly connected with a rotating gear, four second rectangular blocks and four transmission gears are respectively arranged inside the circular shell, the outer surfaces of every two transmission gears are meshed with a transmission toothed belt, the inner walls of every two second rectangular blocks are rotatably connected with a threaded shaft, the outer surface of each threaded shaft is threadedly connected with a moving block, a transmission assembly is commonly arranged above the two moving blocks, and a processing mechanism is arranged above the moving block; The processing mechanism includes a first fixed cylinder and a second fixed cylinder, the inner wall of the first fixed cylinder is rotatably connected to the first support shaft, the outer surface of the first support shaft is fixedly connected to the first gear, the outer surface of the first gear and the outer surface of the first support shaft are commonly fixedly connected to a spring, the outer surface of the spring is fixedly connected to a fixed plate, the end of the first gear away from the spring is fixedly connected to a transmission shaft, the inner wall of the circular shell is rotatably connected to the second support shaft, the end of the second support shaft away from the second fixed cylinder is fixedly connected to a cleaning plate, a limiting assembly is provided on the outside of the transmission shaft, a releasing assembly is provided on the outside of the second fixed cylinder, a gear assembly is provided inside the first fixed cylinder, and a protective assembly is provided on the outside of the circular shell.

2. The forehead mirror for otolaryngology according to claim 1, characterized in that: The outer surfaces of the two first rectangular blocks are commonly fixedly connected to the inner wall of the circular shell, the outer surface of each of the second rectangular blocks is fixedly connected to the inner wall of the circular shell, wherein the inner walls of the two transmission gears are fixedly connected to the outer surface of the rotating shaft, and the inner walls of the other two transmission gears are respectively fixedly connected to the outer surfaces of the two threaded shafts.

3. The forehead mirror for otolaryngology according to claim 1, characterized in that: The transmission assembly includes two connecting plates, the outer surface of each connecting plate is in contact with the inner wall of the moving block, the side surfaces of the two connecting plates close to each other are fixedly connected with a fixing ring, the outer surface of each fixing ring is in contact with the outer surface of the second lens, the outer surface of each connecting plate is slidably connected to the inside of the circular shell, the outer surface of each connecting plate is rotatably connected to two rollers, and the outer surface of each roller is in contact with the inner wall of the circular shell.

4. The forehead mirror for otolaryngology according to claim 1, characterized in that: The outer surface of the first fixed tube and the outer surface of the second fixed tube are both fixedly connected to the inner wall of the circular shell, the fixed plate is fixedly connected to the inner wall of the circular shell, and the front side of the cleaning plate contacts the back side of the circular shell and the back side of the first lens respectively.

5. The forehead mirror for otolaryngology according to claim 1, characterized in that: The limit assembly includes a circular plate fixedly connected to the outer surface of the transmission shaft, a circular cylinder fixedly connected to the front of the circular plate, a force spring fixedly connected to the inner wall of the circular cylinder, an end of the force spring close to the second fixed cylinder is fixedly connected to a limit block, six circular holes are opened on the front of the first fixed cylinder, the outer surface of the limit block contacts the inner wall of the first fixed cylinder, and the end of the transmission shaft close to the second fixed cylinder is fixedly connected to a circular shaft.

6. The forehead mirror for otolaryngology according to claim 1, characterized in that: The release assembly includes two return springs fixedly connected to the inner wall of the second fixed cylinder, the two return springs are fixedly connected to an extrusion plate at one end close to the first fixed cylinder, six extrusion blocks are fixedly connected to the back of the extrusion plate, the second fixed cylinder is slidably connected to two connecting shafts, the outer surfaces of the two connecting shafts are fixedly connected to connecting blocks, the backs of the two connecting blocks are fixedly connected to the front of the extrusion plate, and the end of the circular shaft away from the first fixed cylinder passes through to the outside of the second fixed cylinder.

7. The forehead mirror for otolaryngology according to claim 1, characterized in that: The gear assembly includes a third support shaft rotatably connected to the inner wall of the circular shell, the outer surface of the third support shaft is respectively fixedly connected to the first circular gear and the second gear, the outer surface of the first circular gear is meshed with the outer surface of the first gear, the outer surface of the second support shaft is fixedly connected to the second circular gear, the outer surface of the second circular gear is meshed with the outer surface of the second gear, and a disassembly mechanism is arranged on the outer side of the second gear; The protection component includes a first fixing frame fixedly connected to the outer surface of the circular shell, the inner wall of the first fixing frame is rotatably connected to a first circular shaft, the outer surface of the first circular shaft is fixedly connected to a first transmission plate, the outer surface of the first transmission plate is fixedly connected to a circular ring, the inner wall of the circular ring is fixedly connected to a glass sheet, the outer surface of the circular ring is fixedly connected to a second fixing frame, the inner wall of the second fixing frame is rotatably connected to a second circular shaft, and the outer surface of the second circular shaft is fixedly connected to a supporting frame.

8. The forehead mirror for otolaryngology according to claim 7, characterized in that: The disassembly mechanism includes two rotating plates, and the side surfaces of the two rotating plates that are away from each other are respectively fixedly connected to the side surfaces of the two fixing rings that are close to each other. The inner walls of the two rotating plates are commonly rotatably connected with a short shaft, and the side surfaces of the two fixing rings that are close to each other are fixedly connected with a rectangular plate. The inner walls of the two rectangular plates are commonly threadedly connected with a fastening shaft, and the right end of the fastening shaft is fixedly connected with a rotating plate, the inner wall of the circular shell is threadedly connected with a threaded ring, and the inner wall of the threaded ring is fixedly connected with a concave mirror.

9. The forehead mirror for otolaryngology according to claim 1, characterized in that: Four sliding blocks are slidably connected to the inner wall of the circular shell, and a baffle is fixedly connected to the side surfaces of every two sliding blocks that are close to each other.

10. The forehead mirror for otolaryngology according to claim 1, characterized in that: The outer surface of the circular shell is fixedly connected to a first fixed block, a fixed frame is arranged above the circular shell, the inner wall of the fixed frame is rotatably connected to a first rotating shaft and a second rotating shaft respectively, the outer surface of the first rotating shaft is fixedly connected to the inner wall of the first fixed block, the outer surface of the second rotating shaft is fixedly connected to the second fixed block, and the outer surface of the second fixed block is fixedly connected to an elastic band.

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