Dental mouth gag with protection function

Abstract

The invention discloses a dental mouth gag with a protection function, and particularly relates to the technical field of oral cavity equipment.The dental mouth gag comprises an adjusting structure, the front side and the rear side of the adjusting structure are each fixedly connected with a first protection structure, the upper side and the lower side of the adjusting structure are each movably connected with a second protection structure, and the two second protection structures are symmetrical; by arranging the adjusting structure and the first protective structure, the height of the mouth gag can be flexibly adjusted according to the size of the oral cavity of a patient so as to adapt to different patients, the angle of the protective plate can be automatically adjusted in the adjusting process of the mouth gag, and the mouth gag is effectively prevented from hurting the oral cavity of the patient; by arranging a second protection structure, the stability of the mouth gag in the using process can be further enhanced, the mouth gag is convenient to disassemble and replace, medical staff can conveniently conduct daily maintenance and cleaning work, and the service life of the mouth gag is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of oral equipment, and more particularly to a dental mouth opener with a protective function. Background Art

[0002] A dental mouth opener is a commonly used tool in dental treatment. It is mainly used to keep the patient's mouth open so that the dentist can better perform examinations and treatments. A dental mouth opener, also known as a mouth opener, is an instrument used to open the patient's mouth in oral medicine. It can help dentists clearly see the condition of the patient's mouth, so as to make accurate diagnosis and treatment. In some treatments that require surgery, a dental mouth opener can also help dentists keep the patient's mouth firmly in a specific position to ensure the success rate and safety of the operation.

[0003] As disclosed in the publication number CN216221704U, the utility model discloses a dental mouth opener with a protective function, including a top support plate and a bottom support plate, an adjusting rod assembly is symmetrically arranged between the top support plate and the bottom support plate, the adjusting rod assembly includes a column rod 1 and a column rod 2, the outer walls of the column rod 1 and the column rod 2 are provided with threads, an adjusting tube is arranged between the column rod 1 and the column rod 2, and a tongue depressing structure is arranged in the middle of the top of the bottom support plate. The utility model is buckled into the oral cavity by using the top support plate and the bottom support plate, and can be placed on the inner side of the teeth and lips, and the upper and lower spacing between the top support plate and the bottom support plate can be adjusted by using the adjusting tube, and the tongue depressing structure can be used to adjust the tongue depressing, and the structure is simple and practical.

[0004] At present, the existing dental mouth openers often lack effective protection for the patient's oral cavity when in use, which can easily cause the patient's oral cavity to be damaged during the treatment process. At the same time, the existing dental mouth openers cannot be flexibly adjusted according to the different conditions of the patient's oral cavity due to their single structure, thereby reducing the treatment efficiency and the patient's comfort. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a dental mouth opener with a protective function. The technical problem to be solved by the present invention is that: at present, the existing dental mouth openers often lack effective protection for the patient's oral cavity when in use, which easily causes the patient's oral cavity to be damaged during the treatment process. At the same time, the existing dental mouth openers cannot be flexibly adjusted according to the different conditions of the patient's oral cavity due to their single structure when in use, thereby reducing the treatment efficiency and the patient's comfort.

[0006] To achieve the above object, the present invention provides the following technical solution: A dental mouth opener with a protection function, including an adjustment structure, on both the front and rear sides of the adjustment structure are fixedly connected with a first protection structure, on both the upper and lower sides of the adjustment structure are movably connected with a second protection structure, and the two second protection structures are symmetrical to each other;

[0007] The adjustment structure includes an installation component, inside the installation component is provided with an adjustment component, on both the upper and lower sides of the adjustment component are provided with connection components, the two connection components are symmetrical to each other, and on the right side of the installation component is provided with a locking component;

[0008] Both of the two first protection structures include a first fixing plate, on both the upper and lower sides of the first fixing plate are opened with rectangular grooves, and on the left and right sides of the inner wall of the rectangular groove are rotatably connected with a second gear;

[0009] Both of the two second protection structures include an anti-slip component, and inside the anti-slip component is provided with a limiting component.

[0010] As a further solution of the present invention: The installation component includes an installation block, on the top of the installation block is opened with a rectangular through hole penetrating to the bottom, in the middle positions of the left and right sides of the inner wall of the installation block are fixedly connected with connection blocks, on the right side of the installation block is opened with a circular through hole penetrating to the left side of the right connection block, and on the right side of the installation block is opened with a first installation groove.

[0011] As a further solution of the present invention: The adjustment component includes a bidirectional threaded rod, in the middle position of the outer wall of the bidirectional threaded rod is movably connected with a fixed sleeve, the outer wall of the fixed sleeve is fixedly connected with the inner wall of the rectangular through hole, the left end of the bidirectional threaded rod is rotatably connected with the right side of the left connection block, the right end of the bidirectional threaded rod is fixedly connected with a connection shaft, the outer wall of the connection shaft is movably connected with the inner wall of the circular through hole, and on the outer wall of the bidirectional threaded rod are threadedly connected with two symmetrical sliders, and on the upper and lower sides of the slider are hinged with connecting plates.

[0012] As a further solution of the present invention: Both of the two connection components include trapezoidal blocks, on the side where the upper and lower two trapezoidal blocks are close to each other are hinged with the ends of the two connecting plates far away from the sliders, on the front and rear sides of the trapezoidal block are opened with a plurality of tooth grooves in a horizontal array, on the sides where the two trapezoidal blocks are far away from each other are opened with dovetail grooves, and on the front and rear sides on the right side of the trapezoidal block are opened with second installation grooves.

[0013] As a further solution of the present invention: The locking component includes a plum blossom knob, the rear end of the plum blossom knob is fixedly connected with a first gear, and the rear end of the first gear is fixedly connected with the right end of the connection shaft.

[0014] As a further solution of the present invention: A clamping block is meshed and connected to the outer wall of the first gear. A first sliding sleeve is fixedly connected to the rear side of the clamping block. A first sliding rod is movably connected to the inner wall of the first sliding sleeve. A first spring is sleeved on the right side of the outer wall of the first sliding rod. The left and right ends of the first sliding rod are fixedly connected to the inner wall of the first installation groove.

[0015] As a further solution of the present invention: Protective plates are hinged on both the upper and lower sides of the first fixing plate. A semi-tooth ring sleeve is fixedly connected to the side of the protective plate close to the first fixing plate. The outer wall of the semi-tooth ring sleeve is meshed and connected to the outer wall of the second gear. The front and rear sides of the first installation block are fixedly connected to the sides of the two first fixing plates close to each other.

[0016] As a further solution of the present invention: The anti-slip assembly includes a movable plate. A plurality of anti-slip bumps are horizontally and arrayedly fixedly connected to the sides of the two movable plates away from each other. Convex plates are fixedly connected to the sides of the two movable plates close to each other. The outer wall of the convex plate is movably connected to the inner wall of the dovetail groove. An insertion frame is fixedly connected to the right side of the movable plate.

[0017] As a further solution of the present invention: Both of the limiting assemblies include insertion blocks. Limiting plates are fixedly connected to the sides of the two insertion blocks close to each other. Second fixing plates are fixedly connected to the sides of the two limiting plates close to each other. Second sliding sleeves are fixedly connected to the front and rear sides on the left side of the second fixing plate. A second sliding rod is movably connected to the inner wall of the second sliding sleeve. Second springs are sleeved on the sides of the outer walls of the upper and lower second sliding rods close to each other.

[0018] As a further solution of the present invention: The upper and lower ends of the second sliding rod are fixedly connected to the inner wall of the second installation groove. The outer wall of the insertion block is movably connected to the inner wall of the insertion frame.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. By providing an adjustment structure and a first protective structure, the present invention can flexibly adjust the height of the mouth opener according to the size of the patient's oral cavity to adapt to different patients. At the same time, it can also play a role in stabilizing the mouth opener, preventing the mouth opener from sliding or falling off during the treatment process, and can automatically adjust the angle of the protective plate during the adjustment of the mouth opener, effectively preventing the mouth opener from causing harm to the patient's oral cavity and improving the safety of the treatment and the comfort of the patient.

[0021] 2. By providing a second protective structure, the present invention can further enhance the stability of the mouth opener during use, and is convenient for disassembly and replacement, facilitating the daily maintenance and cleaning work of medical staff and extending the service life of the mouth opener. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a structural schematic diagram of the present invention;

[0023] Figure 2 Schematic diagram of the adjustment structure of the present invention;

[0024] Figure 3 Schematic diagram of the installation component of the present invention;

[0025] Figure 4 Schematic diagram of the adjustment component of the present invention;

[0026] Figure 5 Schematic diagram of the connection component of the present invention;

[0027] Figure 6 Schematic diagram of the locking component of the present invention;

[0028] Figure 7 Schematic diagram of the first protection structure of the present invention;

[0029] Figure 8 Schematic diagram of the second protection structure of the present invention;

[0030] Figure 9 Schematic diagram of the anti-slip component of the present invention;

[0031] Figure 10 Schematic diagram of the limit component of the present invention.

[0032] In the figure: 1. Adjustment structure; 2. First protection structure; 3. Second protection structure; 11. Installation component; 12. Adjustment component; 13. Connection component; 14. Locking component; 111. Installation block; 112. Rectangular through hole; 113. Connection block; 114. Circular through hole; 115. First installation groove; 121. Bidirectional threaded rod; 122. Fixed sleeve; 123. Connection shaft; 124. Slide block; 125. Connection plate; 131. Trapezoidal block; 132. Tooth groove; 133. Dovetail groove; 134. Second installation groove; 141. Plum blossom knob; 142. First gear; 143. Block; 144. First sliding sleeve; 145. First sliding rod; 146. First spring; 21. First fixing plate; 22. Second gear; 23. Protection plate; 24. Semi-tooth ring sleeve; 31. Anti-slip component; 32. Limit component; 311. Movable plate; 312. Anti-slip convex block; 313. Convex plate; 314. Insertion frame; 321. Insertion block; 322. Limit plate; 323. Second fixing plate; 324. Second sliding sleeve; 325. Second sliding rod; 326. Second spring. Detailed implementation manner

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] As Figure 1 shown, the present invention provides a dental mouth opener with a protection function, which includes an adjustment structure 1. Both the front and rear sides of the adjustment structure 1 are fixedly connected with a first protection structure 2, and both the upper and lower sides of the adjustment structure 1 are movably connected with a second protection structure 3, and the two second protection structures 3 are symmetrical to each other.

[0035] As Figures 2 - 7As shown in the figure, the adjusting structure 1 includes a mounting assembly 11. An adjusting assembly 12 is arranged inside the mounting assembly 11. Connecting assemblies 13 are arranged on both the upper and lower sides of the adjusting assembly 12. The two connecting assemblies 13 are symmetrical. A locking assembly 14 is arranged to the right of the mounting assembly 11. The mounting assembly 11 includes a mounting block 111. A rectangular through hole 112 penetrating from the top to the bottom is formed in the top of the mounting block 111. Connecting blocks 113 are fixedly connected to the middle positions on the left and right sides of the inner wall of the mounting block 111. A circular through hole 114 penetrating to the left side of the right connecting block 113 is formed in the right side of the mounting block 111. A first mounting groove 115 is formed in the right side of the mounting block 111. The adjusting assembly 12 includes a bidirectional threaded rod 121. A fixed sleeve 122 is movably connected to the middle position of the outer wall of the bidirectional threaded rod 121. The outer wall of the fixed sleeve 122 is fixedly connected to the inner wall of the rectangular through hole 112. The left end of the bidirectional threaded rod 121 is rotatably connected to the right side of the left connecting block 113. A connecting shaft 123 is fixedly connected to the right end of the bidirectional threaded rod 121. The outer wall of the connecting shaft 123 is movably connected to the inner wall of the circular through hole 114. Two symmetrical sliders 124 are threadedly connected to the outer wall of the bidirectional threaded rod 121. Connecting plates 125 are hinged to both the upper and lower sides of the slider 124. Both of the two connecting assemblies 13 include trapezoidal blocks 131. The sides of the upper and lower trapezoidal blocks 131 close to each other are hinged to the ends of the two connecting plates 125 away from the slider 124. A plurality of horizontally arranged tooth grooves 132 are formed on the front and rear sides of the trapezoidal block 131. Dovetail grooves 133 are formed on the sides of the two trapezoidal blocks 131 away from each other. Second mounting grooves 134 are formed on the front and rear sides of the right side of the trapezoidal block 131. The locking assembly 14 includes a plum blossom knob 141. A first gear 142 is fixedly connected to the rear end of the plum blossom knob 141. The rear end of the first gear 142 is fixedly connected to the right end of the connecting shaft 123. A clamping block 143 is meshed with the outer wall of the first gear 142. A first sliding sleeve 144 is fixedly connected to the rear side of the clamping block 143. A first sliding rod 145 is movably connected to the inner wall of the first sliding sleeve 144. A first spring 146 is sleeved on the outer wall of the right side of the first sliding rod 145. The left and right ends of the first sliding rod 145 are fixedly connected to the inner wall of the first mounting groove 115. Both of the two protection structures 1 include a first fixing plate 21. Rectangular grooves are formed on both the upper and lower sides of the first fixing plate 21. Second gears 22 are rotatably connected to the left and right sides of the inner walls of the rectangular grooves. Protection plates 23 are hinged to both the upper and lower sides of the first fixing plate 21. A semi-tooth ring sleeve 24 is fixedly connected to the side of the protection plate 23 close to the first fixing plate 21. The outer wall of the semi-tooth ring sleeve 24 is meshed with the outer wall of the second gear 22. The sides of the two first fixing plates 21 close to each other are fixedly connected to the front and rear sides of the mounting block 111. By turning the plum blossom knob 141, the first gear 142 is rotated, thereby driving the connecting shaft 123 to rotate inside the circular through hole 114, so that the bidirectional threaded rod 121 rotates inside the fixed sleeve 122. By rotating the bidirectional threaded rod 121, the two sliders 124 move towards or away from each other on the outer wall of the bidirectional threaded rod 121.While the two sliders 124 move, they drive the trapezoidal block 131 and the second protection structure 3 to move through the hinged connecting plate 125, so as to flexibly adjust the height of the mouth opener to adapt to different patients. At the same time, while the trapezoidal block 131 moves, it drives the second gear 22 inside the first protection structure 2 to rotate through the formed tooth grooves 132, and the rotation of the second gear 22 drives the semi-tooth ring sleeve 24 to rotate, thereby adjusting the angle of the protection plate 23, achieving flexible adjustment of the protection effect during the use of the dental mouth opener to avoid harm to the patient's oral cavity. When the first gear 142 rotates, it drives the block 143 to move through the inclined surface of the block 143. The movement of the block 143 drives the first sliding sleeve 144 to slide on the outer wall of the first sliding rod 145, thereby squeezing the first spring 146. When the teeth pass by, the block 143 will be pushed to reset under the action of the first spring 146. When the first gear 142 rotates in the reverse direction, it will be blocked by the block 143, thereby preventing the patient from biting during use and causing the threaded rod to rotate and closing the mouth opener, further enhancing the safety and stability of the dental mouth opener. When the mouth opener is used up, the block 143 can be pushed, and then the plum blossom knob 141 is rotated in the reverse direction, so that the connecting component 13 is reset.

[0036] As Figures 8 - 10As shown in the figure, both of the two protection structures II 3 include anti-slip components 31. A limiting component 32 is arranged inside the anti-slip component 31. The anti-slip component 31 includes a movable plate 311. A plurality of anti-slip bumps 312 are fixedly connected horizontally and arrayed on the sides of the two movable plates 311 away from each other. Convex plates 313 are fixedly connected to the sides of the two movable plates 311 close to each other. The outer wall of the convex plate 313 is movably connected to the inner wall of the dovetail groove 133. An insertion frame 314 is fixedly connected to the right side of the movable plate 311. Both of the two limiting components 32 include insertion blocks 321. Limiting plates 322 are fixedly connected to the sides of the two insertion blocks 321 close to each other. Fixing plates II 323 are fixedly connected to the sides of the two limiting plates 322 close to each other. Slide sleeves II 324 are fixedly connected to the front and rear sides on the left of the fixing plate II 323. A slide rod II 325 is movably connected to the inner wall of the slide sleeve II 324. Spring II 326 is sleeved on the outer walls of the upper and lower slide rods II 325 close to each other. The upper and lower ends of the slide rod II 325 are fixedly connected to the inner wall of the installation groove II 134. The outer wall of the insertion block 321 is movably connected to the inner wall of the insertion frame 314. By moving the fixing plate II 323 downward, the limiting plate 322 is driven to move, and then the insertion block 321 is driven to move. By moving the fixing plate II 323, the slide sleeve II 324 is driven to move, so that the slide sleeve II 324 slides on the outer wall of the slide rod II 325, thereby squeezing the spring II 326. When the insertion block 321 disengages from the inner wall of the insertion frame 314, at this time, the movable plate 311 is moved. While the movable plate 311 moves, the convex plate 313 is driven to slide inside the dovetail groove 133, and at the same time, the anti-slip bumps 312 are driven to move until the convex plate 313 is moved out of the inner wall of the dovetail groove 133, so that the anti-slip component 31 can be replaced. When installing the anti-slip component 31 after cleaning is completed, the convex plate 313 is inserted into the dovetail groove 133, and then the fixing plate II 323 is released. Under the action of the spring II 326, the slide sleeve II 324 is pushed to move. While the slide sleeve II 324 moves, the fixing plate II 323 is driven to move. While the fixing plate II 323 moves, the limiting plate 322 is driven to move. While the limiting plate 322 moves, the insertion block 321 is driven to move, so that the insertion block 321 is reset and inserted into the insertion frame 314 to limit the anti-slip component 31, achieving the effect of being convenient for disassembly and cleaning. And through the arranged anti-slip bumps 312, the friction force with the patient's teeth can be increased, avoiding the situation of falling off during use, further improving the stability and safety of the dental mouth opener. At the same time, the anti-slip bumps 312 are made of rubber material. The anti-slip bumps 312 made of rubber material are relatively soft in texture, which can increase the comfort of the patient during use and avoid damaging the patient's teeth.

[0037] The working principle of the present invention:

[0038] By turning the plum blossom knob 141, the first gear 142 rotates, thereby driving the connecting shaft 123 to rotate inside the circular through-hole 114, causing the bidirectional threaded rod 121 to rotate inside the fixed sleeve 122. By the rotation of the bidirectional threaded rod 121, the two sliders 124 move towards or away from each other on the outer wall of the bidirectional threaded rod 121. While the two sliders 124 move, the trapezoidal block 131 and the second protection structure 3 are driven to move through the articulated connecting plate 125, flexibly adjusting the height of the mouth opener to adapt to different patients. At the same time, while the trapezoidal block 131 moves, the second gear 22 inside the first protection structure 2 is driven to rotate through the provided tooth groove 132. By the rotation of the second gear 22, the semi-tooth ring sleeve 24 is driven to rotate, thereby adjusting the angle of the protection plate 23, achieving flexible adjustment of the protection effect during the use of the dental mouth opener to avoid harm to the patient's oral cavity. When the first gear 142 rotates, the block 143 is driven to move through the inclined surface of the block 143. The movement of the block 143 drives the first sliding sleeve 144 to slide on the outer wall of the first sliding rod 145, thereby squeezing the first spring 146. When the teeth pass by, the block 143 will be pushed to reset under the action of the first spring 146. When the first gear 142 rotates in the reverse direction, it will be blocked by the block 143, preventing the threaded rod from rotating due to the patient's biting during use and closing the mouth opener, further enhancing the safety and stability of the dental mouth opener. When the mouth opener is no longer in use, the block 143 can be pushed, and then the plum blossom knob 141 can be rotated in the reverse direction to reset the connecting assembly 13;

[0039] By moving the fixed plate two 323 downward, the limit plate 322 is driven to move, and then the insertion block 321 is driven to move. By moving the fixed plate two 323, the sliding sleeve two 324 is driven to move, so that the sliding sleeve two 324 slides on the outer wall of the sliding rod two 325, thereby squeezing the spring two 326. When the insertion block 321 disengages from the inner wall of the insertion frame 314, the movable plate 311 is moved at this time. While the movable plate 311 moves, the convex plate 313 is driven to slide inside the dovetail groove 133, and at the same time the anti-slip convex block 312 is driven to move until the convex plate 313 is moved out of the inner wall of the dovetail groove 133, so that the anti-slip component 31 can be replaced. When installing the anti-slip component 31 after cleaning is completed, the convex plate 313 is inserted into the dovetail groove 133, and then the fixed plate two 323 is released. Under the action of the spring two 326, the sliding sleeve two 324 is pushed to move. While the sliding sleeve two 324 moves, the fixed plate two 323 is driven to move. While the fixed plate two 323 moves, the limit plate 322 is driven to move. While the limit plate 322 moves, the insertion block 321 is driven to move, so that the insertion block 321 is reset and inserted into the insertion frame 314 to limit the anti-slip component 31, achieving the effect of being convenient for disassembly and cleaning. And by providing the anti-slip convex block 312, the friction force with the patient's teeth can be increased, avoiding the situation of falling off during use, further improving the stability and safety of the dental mouth opener. At the same time, the anti-slip convex block 312 is made of rubber material. The anti-slip convex block 312 made of rubber material is relatively soft in texture, which can increase the comfort of the patient during use and avoid damaging the patient's teeth.

[0040] Finally, several points should be noted: First, in the description of the present application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or it can be the communication inside two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the described object changes, the relative position relationship may change;

[0041] Second: In the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments of the present disclosure are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0042] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A dental mouth opener with a protective function, comprising an adjustment structure (1), characterized in that: The front and rear sides of the adjustment structure (1) are both fixedly connected to a protective structure 1 (2), and the upper and lower sides of the adjustment structure (1) are both movably connected to a protective structure 2 (3), and the two protective structures 2 (3) are symmetrical; The adjustment structure (1) comprises a mounting assembly (11), an adjustment assembly (12) is arranged inside the mounting assembly (11), connecting assemblies (13) are arranged on both upper and lower sides of the adjustment assembly (12), the two connecting assemblies (13) are symmetrical, and a locking assembly (14) is arranged on the right side of the mounting assembly (11); The two protection structures (2) each include a fixing plate (21), wherein the fixing plate (21) is provided with rectangular grooves on both upper and lower sides, and the inner walls of the rectangular grooves are rotatably connected to gears (22) on both left and right sides; The two protection structures (3) both comprise an anti-skid component (31), and a limiting component (32) is arranged inside the anti-skid component (31).

2. The dental mouth opener with protective function according to claim 1, characterized in that: The mounting assembly (11) comprises a mounting block (111), the top of the mounting block (111) is provided with a rectangular through hole (112) extending through to the bottom, the middle positions of the left and right sides of the inner wall of the mounting block (111) are fixedly connected with connecting blocks (113), the right side of the mounting block (111) is provided with a circular through hole (114) extending through to the left side of the right connecting block (113), and the right side of the mounting block (111) is provided with a mounting groove 1 (115).

3. The dental mouth opener with protective function according to claim 1, characterized in that: The adjustment assembly (12) comprises a bidirectional threaded rod (121), a fixing sleeve (122) is movably connected to the middle position of the outer wall of the bidirectional threaded rod (121), the outer wall of the fixing sleeve (122) is fixedly connected to the inner wall of the rectangular through hole (112), the left end of the bidirectional threaded rod (121) is rotatably connected to the right side of the left connecting block (113), the right end of the bidirectional threaded rod (121) is fixedly connected to a connecting shaft (123), the outer wall of the connecting shaft (123) is movably connected to the inner wall of the circular through hole (114), the outer wall of the bidirectional threaded rod (121) is threadedly connected to two symmetrical sliders (124), and the upper and lower sides of the slider (124) are both hinged with connecting plates (125).

4. The dental mouth opener with protective function according to claim 1, characterized in that: The two connecting components (13) each comprise a trapezoidal block (131); the sides of the upper and lower trapezoidal blocks (131) close to each other are hinged to the ends of the two connecting plates (125) away from the slider (124); the front and rear sides of the trapezoidal block (131) are provided with a plurality of tooth grooves (132) in a horizontal array; the sides of the two trapezoidal blocks (131) away from each other are provided with a dovetail groove (133); and the front and rear sides of the right side of the trapezoidal block (131) are provided with a second mounting groove (134).

5. The dental mouth opener with protective function according to claim 1, characterized in that: The locking assembly (14) comprises a plum blossom knob (141), the rear end of the plum blossom knob (141) is fixedly connected to a gear one (142), and the rear end of the gear one (142) is fixedly connected to the right end of the connecting shaft (123).

6. The dental mouth opener with protective function according to claim 5, characterized in that: The outer wall of the gear 1 (142) is meshingly connected with a block (143), the rear side of the block (143) is fixedly connected with a sliding sleeve 1 (144), the inner wall of the sliding sleeve 1 (144) is movably connected with a sliding rod 1 (145), the right side of the outer wall of the sliding rod 1 (145) is sleeved with a spring 1 (146), and the left and right ends of the sliding rod 1 (145) are fixedly connected to the inner wall of the mounting groove 1 (115).

7. The dental mouth opener with protective function according to claim 1, characterized in that: The upper and lower sides of the fixing plate 1 (21) are both hinged with a protective plate (23); the side of the protective plate (23) close to the fixing plate 1 (21) is fixedly connected with a semi-toothed ring sleeve (24); the outer wall of the semi-toothed ring sleeve (24) is meshingly connected with the outer wall of the gear 2 (22); the sides of the two fixing plates 1 (21) close to each other are fixedly connected with the front and rear sides of the mounting block (111).

8. The dental mouth opener with protective function according to claim 1, characterized in that: The anti-skid assembly (31) comprises a movable plate (311), and the sides of the two movable plates (311) that are away from each other are both fixedly connected with a plurality of anti-skid protrusions (312) in a horizontal array, and the sides of the two movable plates (311) that are close to each other are both fixedly connected with a convex plate (313), the outer wall of the convex plate (313) is movably connected to the inner wall of the dovetail groove (133), and the right side of the movable plate (311) is fixedly connected with an insertion frame (314).

9. The dental mouth opener with protective function according to claim 1, characterized in that: The two limit assemblies (32) each include an insert block (321), the two insert blocks (321) are fixedly connected to a limit plate (322) on one side close to each other, the two limit plates (322) are fixedly connected to a second fixing plate (323) on one side close to each other, the front and rear sides of the left side of the second fixing plate (323) are fixedly connected to a second sliding sleeve (324), the inner wall of the second sliding sleeve (324) is movably connected to a second sliding rod (325), and the outer walls of the upper and lower sliding rods (325) are sleeved with a second spring (326) on one side close to each other.

10. The dental mouth opener with protective function according to claim 9, characterized in that: The upper and lower ends of the second sliding rod (325) are fixedly connected to the inner wall of the second mounting groove (134), and the outer wall of the insertion block (321) is movably connected to the inner wall of the insertion frame (314).

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