Oral cavity auxiliary distraction device for oral cavity nursing examination

Abstract

The invention is suitable for the technical field of oral cavity nursing auxiliary instruments, and provides an oral cavity auxiliary distraction device for oral cavity nursing examination, which comprises a bearing seat, a support plate, a first limiting seat, a second limiting seat, an oral cavity distraction mechanism, a transmission mechanism and an angle adjusting mechanism, the bearing seats and the supporting plates form two integral structures and are symmetrically arranged, the first limiting seats are arranged on the side walls of the bearing seats, the second limiting seats are arranged on the side walls of the supporting plates, and the two second limiting seats are symmetrically arranged at the upper ends and the lower ends of the supporting plates. According to the scheme, the oral cavity of a patient is supported through an integral structure formed by a linkage rod and a tooth bearing plate in the oral cavity opening mechanism, and during supporting, the position of the tooth bearing plate is adjusted through sliding of a first sliding block in a second limiting seat, so that the size of the oral cavity opening angle is adjusted, and the application range is widened.

Description

Technical Field

[0001] The invention belongs to the technical field of oral care auxiliary devices, and in particular relates to an oral auxiliary opening device for oral care inspection. Background Art

[0002] Oral care is the cleaning and protection of the teeth, tongue, palate, cheeks and other parts of the oral organs. Modern people have a fast pace of life, and the physical health of the younger generation is basically in a sub-healthy state. Many people are under great work pressure and have no time to examine their bodies carefully. In addition, oral examinations are often the easiest to ignore. With the greatly increased intake of sugar in food, people basically have certain oral problems to a certain extent. Therefore, regular oral care and examinations are required. General oral care requires the use of instruments to fix the head and use auxiliary expansion devices to open the mouth for medical staff to conduct examinations.

[0003] Although there are many kinds of oral auxiliary opening devices currently, there are still some problems. For example, most of the current oral auxiliary opening devices support the patient's upper and lower jaws through two support plates with adjustable angles to achieve the effect of opening the mouth. However, due to the different tooth growth conditions of different patients, not all patients have the same tooth growth length. The current auxiliary opening devices mostly have two flat support plates on both sides, and the height that can be supported is also the same. The support height cannot be adaptively adjusted according to the growth conditions of the teeth on both sides of the patient. For some patients with different tooth lengths on both sides, a certain discomfort will occur during support. What's more, one side of the support plate will be suspended in the air or the patient's upper and lower jaws will be crooked. Summary of the invention

[0004] The present invention provides an oral auxiliary opening device for oral care inspection, aiming to solve the problem that the opening heights on both sides of the current auxiliary opening device are the same and cannot be adaptively adjusted according to the patient's oral environment.

[0005] The present invention is implemented as follows: an oral cavity auxiliary opening device for oral care inspection comprises:

[0006] A supporting seat, a supporting plate, a first limiting seat, a second limiting seat, an oral opening mechanism, a transmission mechanism and an angle adjustment mechanism;

[0007] The support plate is fixed to one side of the support seat, and the overall structure composed of the support seat and the support plate is provided with two groups, and is symmetrically arranged, the first limit seat is arranged on the side wall of the support seat, the second limit seat is arranged on the side wall of the support plate, and two are symmetrically arranged at the upper and lower ends of the support plate;

[0008] The oral cavity opening mechanism is connected to the integral structure formed by the supporting seat and the supporting plate, and the oral cavity opening mechanism comprises a linkage rod, a first slider and a tooth supporting plate; the first slider is fixed to one end of the linkage rod, and the first slider is slidably engaged in the second limiting seat, and the tooth supporting plate is connected to the other end of the linkage rod;

[0009] The transmission mechanism for driving the oral opening mechanism to be linked as a whole is arranged on the supporting seat, the angle adjustment mechanism is connected between the linkage rod and the tooth support plate, and the angle adjustment mechanism includes a base plate and an adjustment disk, the base plate is fixed on one end of the linkage rod close to the tooth support plate, the adjustment disk is fixed on one end of the tooth support plate, and the adjustment disk is coaxially rotatably connected to the bottom of the base plate.

[0010] Preferably, the oral opening mechanism also includes a second slider, an active rack, a linkage gear and a driven rack. The second slider is slidably clamped in the first limit seat, the active rack is fixed on the second slider, the linkage gear is rotatably connected to the side wall of the support plate, and two are symmetrically arranged up and down, the active rack is meshed between the upper and lower linkage gears, and the driven rack is arranged on one side of the linkage rod and meshed with the linkage gear.

[0011] Preferably, the transmission mechanism includes a docking plate, a transmission rack, a base, a first guide rod and a transmission gear. The docking plate is horizontally fixed on one side of the second slider and is provided with a rectangular slot on the supporting base. The docking plate passes through the rectangular slot. The transmission rack is fixed to one end of the docking plate away from the second slider. The first guide rod is fixed to the base, and the first guide rod is slidably connected to the supporting base. A transmission gear is rotatably connected to the base, and the base is meshed between two adjacent transmission racks.

[0012] Preferably, a first screw rod is rotatably connected to the base at the center of one side of the first guide rod, and a screw hole is penetrated through the support base, and the first screw rod is threadedly engaged in the screw hole.

[0013] Preferably, the angle adjustment mechanism also includes teeth grooves and a limiting gear, the teeth grooves are respectively concavely arranged at the bottom of the base plate and the top of the adjusting disk, the limiting gear is slidably engaged between the teeth grooves of the base plate and the adjusting disk, and the depth of the teeth grooves on the base plate is less than the height of the limiting gear, and the depth of the teeth grooves on the adjusting disk is greater than the height of the limiting gear.

[0014] Preferably, a return spring is arranged at the axis of the adjusting disk, and the top end of the return spring abuts against the bottom end of the limiting gear.

[0015] Preferably, a pressing rod is coaxially fixed to the top of the limiting gear, and a portion of the pressing rod protrudes from the bottom plate and is rotatably connected to the bottom plate.

[0016] Preferably, a second screw rod is rotatably connected at the center of one of the supporting seats, and a screw hole is provided at the center of one side of the other supporting seat, and the second screw rod is threadably engaged in the screw hole.

[0017] Preferably, a second guide rod is fixed to one side of the supporting seat rotatably connected to the second screw rod, two second guide rods are provided and are symmetrically arranged on the upper and lower sides of the second screw rod, and through holes are provided at the upper and lower ends of the other side of the supporting seat, and the second guide rod is slidably engaged in the through holes.

[0018] Preferably, the overall structure consisting of the docking plates and the transmission rack is symmetrically arranged in two groups, and a telescopic structure is arranged on one of the docking plates, and a spring is arranged inside the telescopic structure.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0020] 1. The overall structure composed of the linkage rod and the tooth support plate in the oral opening mechanism is used to support the patient's oral cavity. During the support, the position of the tooth support plate is adjusted by sliding the first slider in the second limit seat, thereby adjusting the size of the oral opening angle and increasing the scope of application.

[0021] 2. The transmission mechanism is set up so that when the oral opening mechanism as a whole is linked, the transmission gear in the transmission mechanism can rotate appropriately, so that the two adjacent transmission racks can be linked accordingly, and then the two adjacent groups of second sliders can be driven by the transmission rack to slide respectively, and the sliding distance can be adaptively adjusted according to the height of the teeth in the oral cavity, avoiding the situation where one side of the support plate is suspended in the air or the patient's upper and lower jaws are crooked due to the same opening height on both sides, effectively solving the technical problem while increasing the patient's comfort.

[0022] 3. The angle adjustment mechanism is used to quickly adjust the angle between the linkage rod and the tooth support plate, so that medical staff can adjust the angle of the tooth support plate according to the actual situation of the patient's oral cavity, so that the tooth support plate can better contact with the patient's teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the external overall structure of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the oral opening mechanism of the present invention;

[0025] Figure 3 It is a schematic diagram of the transmission mechanism structure of the present invention;

[0026] Figure 4 It is a schematic diagram of the supporting seat and its connection structure of the present invention;

[0027] Figure 5 It is a schematic diagram of the connection structure of the tooth support plate of the present invention;

[0028] Figure 6 It is a schematic diagram of the angle adjustment mechanism structure of the present invention;

[0029] Figure 7 It is a schematic diagram of the cross-sectional structure of the butt joint plate of the present invention;

[0030] In the figure: 1. supporting seat; 2. supporting plate; 3. first limiting seat; 4. second limiting seat; 5. oral opening mechanism; 51. linkage rod; 52. first slider; 53. tooth supporting plate; 54. second slider; 55. active rack; 56. linkage gear; 57. driven rack; 6. transmission mechanism; 61. docking plate; 62. transmission rack; 63. clamping seat; 64. first guide rod; 65. transmission gear; 66. first screw rod; 7. angle adjustment mechanism; 71. bottom plate; 72. adjusting disk; 73. tooth groove; 74. limiting gear; 75. reset spring; 76. pressing rod; 8. second screw rod; 9. second guide rod. DETAILED DESCRIPTION

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] The embodiment of the present invention provides an oral cavity auxiliary opening device for oral care inspection, such as Figure 1-7 As shown, it includes: a supporting seat 1, a supporting plate 2, a first limiting seat 3, a second limiting seat 4, an oral opening mechanism 5, a transmission mechanism 6 and an angle adjustment mechanism 7;

[0034] The support plate 2 is fixed to one side of the support seat 1, and the overall structure composed of the support seat 1 and the support plate 2 is provided with two groups, and is symmetrically arranged, the first limit seat 3 is arranged on the side wall of the support seat 1, and the second limit seat 4 is arranged on the side wall of the support plate 2, and two are symmetrically arranged at the upper and lower ends of the support plate 2;

[0035] The oral opening mechanism 5 is connected to the overall structure formed by the supporting seat 1 and the supporting plate 2. The oral opening mechanism 5 includes a linkage rod 51, a first slider 52 and a tooth supporting plate 53. The first slider 52 is fixed to one end of the linkage rod 51, and the first slider 52 is slidably engaged in the second limiting seat 4, and the tooth supporting plate 53 is connected to the other end of the linkage rod 51.

[0036] The oral opening mechanism 5 further includes a second slider 54, an active rack 55, a linkage gear 56 and a driven rack 57. The second slider 54 is slidably clamped in the first limit seat 3, the active rack 55 is fixed on the second slider 54, and the linkage gear 56 is rotatably connected to the side wall of the support plate 2, and two linkage gears 56 are symmetrically arranged up and down. The active rack 55 is meshed between the upper and lower linkage gears 56, and the driven rack 57 is arranged on one side of the linkage rod 51 and meshed with the linkage gear 56.

[0037] The transmission mechanism 6 for driving the oral opening mechanism 5 to be linked as a whole is arranged on the supporting seat 1, and the transmission mechanism 6 includes a docking plate 61, a transmission rack 62, a clamping seat 63, a first guide rod 64 and a transmission gear 65. The docking plate 61 is horizontally fixed to one side of the second slider 54, and a rectangular notch is provided on the supporting seat 1, and the docking plate 61 passes through the rectangular notch. The transmission rack 62 is fixed on the docking plate 61 at one end away from the second slider 54, the first guide rod 64 is fixed on the clamping seat 63, and the first guide rod 64 is slidably connected to the supporting seat 1, and the clamping seat 63 is rotatably connected with a transmission gear 65, and the clamping seat 63 is meshed between two adjacent transmission racks 62;

[0038] The angle adjustment mechanism 7 is connected between the linkage rod 51 and the tooth support plate 53, and the angle adjustment mechanism 7 includes a base plate 71 and an adjustment disk 72. The base plate 71 is fixed to one end of the linkage rod 51 close to the tooth support plate 53, and the adjustment disk 72 is fixed to one end of the tooth support plate 53, and the adjustment disk 72 is coaxially rotatably connected to the bottom of the base plate 71.

[0039] It should be noted that, since most of the current auxiliary opening devices have two flat support plates on both sides, the height they can support is also the same, and the support height cannot be adaptively adjusted according to the growth of the teeth on both sides of the patient. This will cause a certain degree of discomfort to some patients with different tooth lengths on both sides during support. What's worse, one side of the support plate may be suspended in the air or the patient's upper and lower jaws may be crooked. In order to solve this problem, an oral opening mechanism 5, a transmission mechanism 6 and an angle adjustment mechanism 7 are provided in this solution. The patient's oral cavity is supported by an integral structure formed by a linkage rod 51 and a tooth support plate 53 in the oral opening mechanism 5. During support, the position of the tooth support plate 53 is adjusted by sliding the first slider 52 in the second limit seat 4, thereby adjusting the size of the oral opening angle, thereby increasing the scope of application.

[0040] By utilizing the setting of the transmission mechanism 6, when the oral opening mechanism 5 is linked as a whole, the transmission gear 65 in the transmission mechanism 6 can rotate appropriately, thereby causing the two adjacent transmission racks 62 to be linked accordingly, and then the transmission racks 62 drive the two adjacent groups of second sliders 54 to slide respectively, and the sliding distance can be adaptively adjusted according to the height of the teeth in the oral cavity, thereby avoiding the situation where one side of the support plate is suspended in the air or the upper and lower jaws of the patient are crooked due to the same opening height on both sides, effectively solving the technical problem while also increasing the comfort of the patient;

[0041] The angle adjustment mechanism 7 enables the angle between the linkage rod 51 and the tooth support plate 53 to be quickly adjusted, so that medical staff can adjust the angle of the tooth support plate 53 according to the actual conditions of the patient's oral cavity, so that the tooth support plate 53 can better abut against the patient's teeth.

[0042] Specifically, in this embodiment, the scheme mainly includes a supporting seat 1, a supporting plate 2, a first limiting seat 3, a second limiting seat 4, an oral opening mechanism 5, a transmission mechanism 6 and an angle adjustment mechanism 7. When in use, the tooth supporting plate 53 is first adjusted according to the condition of the teeth in the patient's mouth. When adjusting, the limiting gear 74 is pushed to slide by the pressing rod 76, so that the limiting gear 74 is separated from the tooth groove 73 of the bottom plate 71. At this time, the adjusting disk 72 is unlocked and rotated. After adjusting to the appropriate position, the limiting gear 74 is reset and clamped between the tooth groove 73 of the bottom plate 71 and the adjusting disk 72. , and then place the entire device in the patient's oral cavity. At this time, rotate the first screw rod 66 to move the transmission gear 65, and the transmission gear 65 drives the docking plate 61 and the transmission rack 62 to move as a whole, thereby driving the second slider 54 to slide, and the second slider 54 drives the active rack 55 to move, and then the linkage gear 56 is engaged and linked through the active rack 55. While the linkage gear 56 rotates, the linkage gear 56 drives the driven rack 57 to engage and link, thereby driving the linkage rod 51 to slide until the tooth support plate 53 abuts against the patient's teeth and the patient's oral cavity is stretched open.

[0043] In a further preferred embodiment of the present invention, Figure 1-7 As shown, a first screw rod 66 is rotatably connected to the center of one side of the first guide rod 64 on the holder 63, and a screw hole is provided through the supporting seat 1, and the first screw rod 66 is threadedly engaged in the screw hole.

[0044] In this embodiment, the first screw rod 66 is linked with the thread in the screw hole, thereby driving the entire clamping seat 63 to move.

[0045] In a further preferred embodiment of the present invention, Figure 1-7 As shown, the angle adjustment mechanism 7 also includes a tooth groove 73 and a limit gear 74. The tooth groove 73 is respectively recessed at the bottom of the base plate 71 and the top of the adjustment disk 72. The limit gear 74 is slidably engaged between the tooth grooves 73 of the base plate 71 and the adjustment disk 72. The depth of the tooth groove 73 on the base plate 71 is less than the height of the limit gear 74, and the depth of the tooth groove 73 on the adjustment disk 72 is greater than the height of the limit gear 74.

[0046] In this embodiment, the limit gear 74 is limited by the tooth groove 73, and the base plate 71 and the adjusting disk 72 are limited by the limit gear 74 at the same time, so that when the limit gear 74 is located between the tooth groove 73 of the base plate 71 and the adjusting disk 72, the two can be locked to prevent rotation. When the limit gear 74 is separated from the tooth groove 73 of the base plate 71, the base plate 71 and the adjusting disk 72 can be unlocked and rotated, so that the angle of the tooth support plate 53 can be quickly adjusted.

[0047] In a further preferred embodiment of the present invention, Figure 1-7As shown, a return spring 75 is provided at the axis of the adjustment disk 72 , and the top end of the return spring 75 abuts against the bottom of the limiting gear 74 .

[0048] In this embodiment, the limit gear 74 can be quickly reset and clamped between the bottom plate 71 and the tooth groove 73 of the adjustment disk 72 by the reset spring 75 .

[0049] In a further preferred embodiment of the present invention, Figure 1-7 As shown, a pressing rod 76 is coaxially fixed to the top of the limiting gear 74 . The pressing rod 76 partially protrudes from the bottom plate 71 and is rotatably connected to the bottom plate 71 .

[0050] In this embodiment, the pressing rod 76 facilitates the medical staff to push the limiting gear 74 to move.

[0051] In a further preferred embodiment of the present invention, Figure 1-7 As shown, a second screw rod 8 is rotatably connected at the center of one of the supporting seats 1, and a screw hole is provided at the center of one side of the other supporting seat 1, and the second screw rod 8 is threadedly fitted in the screw hole.

[0052] In this embodiment, the second screw rod 8 is linked with the screw hole in the screw hole, so that the distance between two adjacent supporting seats 1 can be adjusted, and the distance between the oral opening mechanisms 5 on two adjacent supporting seats 1 can be adjusted according to the actual situation of the patient.

[0053] In a further preferred embodiment of the present invention, Figure 1-7 As shown, a second guide rod 9 is fixed to one side of the supporting seat 1 rotatably connected to the second screw rod 8. Two second guide rods 9 are provided and are symmetrically arranged on the upper and lower sides of the second screw rod 8. Through holes are provided at the upper and lower ends of one side of the other supporting seat 1, and the second guide rod 9 is slidably engaged in the through holes.

[0054] In this embodiment, two adjacent supporting seats 1 are limited by the second guide rod 9 so that the two can slide in a directional manner.

[0055] In a further preferred embodiment of the present invention, Figure 1-7 As shown, the overall structure composed of the docking plates 61 and the transmission rack 62 is symmetrically arranged in two groups, and a telescopic structure is arranged on one of the docking plates 61, and a spring is arranged inside the telescopic structure.

[0056] In this embodiment, the telescopic structure is provided so that when the distance between two adjacent supporting seats 1 is adjusted, the transmission rack 62 can always abut against the transmission gear 65 .

[0057] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the described order of actions, because according to the present invention, some steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0058] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0059] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0060] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. An oral auxiliary opening device for oral care inspection, characterized in that: include: A supporting seat (1), a supporting plate (2), a first limiting seat (3), a second limiting seat (4), an oral cavity opening mechanism (5), a transmission mechanism (6) and an angle adjustment mechanism (7); The support plate (2) is fixed on one side of the support seat (1), and the overall structure formed by the support seat (1) and the support plate (2) is provided with two groups, which are symmetrically arranged, the first limit seat (3) is arranged on the side wall of the support seat (1), and the second limit seat (4) is arranged on the side wall of the support plate (2), and two of them are symmetrically arranged at the upper and lower ends of the support plate (2); The oral cavity opening mechanism (5) is connected to an integral structure formed by a supporting seat (1) and a supporting plate (2), and comprises a linkage rod (51), a first slider (52) and a tooth supporting plate (53); the first slider (52) is fixed to one end of the linkage rod (51), and the first slider (52) is slidably engaged in the second limiting seat (4), and the tooth supporting plate (53) is connected to the other end of the linkage rod (51); The transmission mechanism (6) for driving the oral opening mechanism (5) to be linked as a whole is arranged on the support seat (1); the angle adjustment mechanism (7) is connected between the linkage rod (51) and the tooth support plate (53); and the angle adjustment mechanism (7) comprises a bottom plate (71) and an adjustment disk (72); the bottom plate (71) is fixed to one end of the linkage rod (51) close to the tooth support plate (53); the adjustment disk (72) is fixed to one end of the tooth support plate (53); and the adjustment disk (72) is coaxially rotatably connected to the bottom of the bottom plate (71).

2. The oral cavity auxiliary opening device for oral care inspection according to claim 1, characterized in that: The oral opening mechanism (5) further comprises a second slider (54), an active rack (55), a linkage gear (56) and a driven rack (57); the second slider (54) is slidably engaged in the first limit seat (3); the active rack (55) is fixed on the second slider (54); the linkage gear (56) is rotatably connected to the side wall of the support plate (2) and two linkage gears (56) are symmetrically arranged in the upper and lower parts; the active rack (55) is meshed between the upper and lower linkage gears (56); the driven rack (57) is arranged on one side of the linkage rod (51) and meshed with the linkage gear (56).

3. The oral cavity auxiliary opening device for oral care inspection according to claim 1, characterized in that: The transmission mechanism (6) comprises a docking plate (61), a transmission rack (62), a clamping seat (63), a first guide rod (64) and a transmission gear (65); the docking plate (61) is horizontally fixed on one side of the second slider (54), and a rectangular notch is provided on the supporting seat (1); the docking plate (61) passes through the rectangular notch; the transmission rack (62) is fixed on one end of the docking plate (61) away from the second slider (54); the first guide rod (64) is fixed on the clamping seat (63), and the first guide rod (64) is slidably connected to the supporting seat (1); a transmission gear (65) is rotatably connected to the clamping seat (63); and the clamping seat (63) is meshed between two adjacent transmission racks (62).

4. The oral cavity auxiliary opening device for oral care inspection according to claim 3, characterized in that: A first screw rod (66) is rotatably connected to the center of one side of the first guide rod (64) on the clamping seat (63), and a screw hole is provided through the supporting seat (1), and the first screw rod (66) is threadedly engaged in the screw hole.

5. The oral cavity auxiliary opening device for oral care inspection according to claim 1, characterized in that: The angle adjustment mechanism (7) further comprises a tooth groove (73) and a limit gear (74); the tooth groove (73) is respectively concavely arranged at the bottom of the base plate (71) and the top of the adjustment disk (72); the limit gear (74) is slidably engaged between the tooth grooves (73) of the base plate (71) and the adjustment disk (72); the depth of the tooth groove (73) on the base plate (71) is less than the height of the limit gear (74); and the depth of the tooth groove (73) on the adjustment disk (72) is greater than the height of the limit gear (74).

6. The oral cavity auxiliary opening device for oral care inspection according to claim 5, characterized in that: A return spring (75) is arranged at the axis of the adjustment disk (72), and the top end of the return spring (75) abuts against the bottom of the limit gear (74).

7. The oral cavity auxiliary opening device for oral care inspection according to claim 5, characterized in that: A pressing rod (76) is coaxially fixed to the top of the limiting gear (74); a portion of the pressing rod (76) protrudes from the bottom plate (71) and is rotatably connected to the bottom plate (71).

8. The oral cavity auxiliary opening device for oral care inspection according to claim 1, characterized in that: A second screw rod (8) is rotatably connected at the center of one of the supporting seats (1), and a screw hole is provided at the center of one side of the other supporting seat (1), and the second screw rod (8) is threadedly engaged in the screw hole.

9. The oral cavity auxiliary opening device for oral care inspection according to claim 8, characterized in that: A second guide rod (9) is fixed to one side of the support seat (1) rotatably connected to the second screw rod (8), two second guide rods (9) are provided and symmetrically arranged on the upper and lower sides of the second screw rod (8), and through holes are provided at the upper and lower ends of the other side of the support seat (1), and the second guide rod (9) is slidably engaged in the through holes.

10. The oral cavity auxiliary opening device for oral care inspection according to claim 3, characterized in that: The overall structure formed by the docking plate (61) and the transmission rack (62) is symmetrically arranged in two groups, and a telescopic structure is arranged on one of the docking plates (61), and a spring is arranged inside the telescopic structure.

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