Oral face scanning three-dimensional imager

Abstract

The invention relates to the technical field of medical instruments, and discloses an oral face scanning three-dimensional imager which comprises an imager front shell, an imager rear shell is fixed to the rear side of the imager front shell, side arm assemblies are rotationally installed on the two sides of the imager rear shell, a ventilation window is fixed to the rear side of the imager rear shell, and a base is fixed to the bottom of the imager rear shell; the dust sweeping unit is arranged on the outer side of the ventilation window, the dust sweeping unit is used for cleaning dust adsorbed on the ventilation window, and a moving unit is installed on one side of the dust sweeping unit; through the cooperative cooperation of the moving unit and the dust sweeping unit, dust on the surface of the ventilation window on the rear shell of the imager can be automatically cleaned, the situation that too much dust accumulates on the surface of the ventilation window to block ventilation holes is effectively prevented, and therefore normal operation of a heat dissipation system in the imager is ensured; and a heat dissipation mode of circulating cooling liquid of the liquid cooling unit can be adopted, so that the heat dissipation efficiency of key heating parts of the imager is further enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a three-dimensional imaging instrument for oral and facial scanning. BACKGROUND

[0002] In the field of oral medicine, accurately and comprehensively obtaining the structural information of the patient's oral and facial region is the cornerstone of precise diagnosis and personalized treatment. Traditional oral examination methods, such as X-ray films and oral impressions, have provided some help for clinical diagnosis and treatment to some extent, but they have many limitations. X-ray films can only present two-dimensional images, and for complex oral and maxillofacial structures, it is difficult to provide complete and three-dimensional information, making it difficult for doctors to fully understand the depth, range of the lesion and the spatial relationship with the surrounding tissues, which can easily lead to misdiagnosis and missed diagnosis. The traditional oral impression process is tedious, the patient's comfort is poor, and the impression material may cause adverse reactions such as allergies, and the accuracy of the model obtained is easily affected by various factors, which cannot meet the growing demand for high-precision diagnosis and treatment.

[0003] Currently, oral and facial scanning three-dimensional imaging technology has made significant progress and plays an important role in the field of oral medicine. The oral and facial scanning three-dimensional imaging instrument is composed of three high-performance infrared speckle structured light RGB true color depth camera modules, one stripe grating structure and a light depth camera module. The camera captures the light receiving object from different angles, calculates the three-dimensional information of the object surface according to the deformation of the pattern, and can accurately obtain real facial 3D data in a short time. However, during the working process of the oral and facial scanning three-dimensional imaging instrument, a large amount of heat is generated inside. In the conventional heat dissipation design of existing imaging instruments, a heat dissipation window or an array of heat dissipation holes is usually opened on the rear side of the instrument. However, after long-term use, a large amount of dust and particulate matter in the air can easily accumulate on the surface and inside of the heat dissipation window. The pollutants will gradually adhere to the metal mesh cover of the heat dissipation window, not only hindering the circulation of air, but also forming a layer of thermal resistance, seriously affecting the heat dissipation efficiency, ultimately possibly leading to an increase in device temperature, a decrease in performance, and even a reduction in device service life. SUMMARY

[0004] The purpose of the present application is to provide an oral and facial scanning three-dimensional imaging instrument to solve the problem of low heat dissipation efficiency mentioned in the background.

[0005] In order to achieve the above object, the present application provides the following technical scheme: an oral cavity and face scanning three-dimensional imager, comprising an imager front shell, a rear side of the imager front shell is fixed with an imager rear shell, both sides of the imager rear shell are rotatably installed with side arm assemblies, a rear side of the imager rear shell is fixed with a ventilation window, and a bottom of the imager rear shell is fixed with a base; further comprising: a dust sweeping unit arranged outside the ventilation window, the dust sweeping unit is used for cleaning dust adsorbed on the ventilation window, and one side of the dust sweeping unit is installed with a moving unit; a liquid cooling unit installed between the inside and outside of the imager rear shell, a driving unit is transmissionally connected between the liquid cooling unit and the moving unit; a soothing unit installed outside the imager rear shell, the soothing unit is used for air blowing and relaxing treatment on a face of a patient facing a front side of the imager.

[0006] Preferably, the dust sweeping unit comprises a U-shaped plate, a length of the U-shaped plate is greater than a diameter of the ventilation window, an inner side of the U-shaped plate is provided with a brush, two guide rods are fixed on a side of the brush away from the ventilation window, the guide rods are slidably sleeved with the U-shaped plate, a limiting block is fixed on an end of the guide rod away from the brush, a compression spring is sleeved between the limiting block and the U-shaped plate, and a connecting frame is fixed on an outer side of the U-shaped plate.

[0007] Preferably, the moving unit comprises a groove plate, an end of the connecting frame away from the U-shaped plate is fixed with a top of the groove plate, both ends of the groove plate are fixed with sliding strips, a pin rod is slidably connected in the groove plate, an end of the pin rod is fixed with a rotating arm, an outer side of the sliding strip is slidably sleeved with a fixed arm, and an output end of the driving unit is fixedly connected with the rotating arm.

[0008] Preferably, the driving unit comprises a mounting box, the mounting box is fixedly connected with the imager rear shell, a worm is rotatably installed in the mounting box, a worm wheel is meshingly connected on one side of the worm, a middle shaft of the worm wheel is rotatably connected with the mounting box, an outer end of the middle shaft of the worm wheel is fixedly connected with the rotating arm, a driving bevel gear is rotatably connected on a rear side in the mounting box, the driving bevel gear is meshingly connected with a driven bevel gear, the driven bevel gear is fixedly sleeved with one end of the worm, a first housing is fixed on a rear side of the mounting box, a driving impeller is rotatably connected in the first housing, one end of the driving impeller is fixedly connected with a middle shaft of the driving bevel gear, one end of the middle shaft of the driving bevel gear is fixedly connected with a first transmission shaft, an input end of the soothing unit is transmissionally connected with the first transmission shaft, and one end of the fixed arm is fixed with the mounting box.

[0009] Preferably, the liquid cooling unit comprises a cooling liquid tank mounted on the inner side of the base, a water pump fixed on the top of the cooling liquid tank, an input end of the water pump communicated with the cooling liquid tank through a pipeline, a connecting pipe I connected to the output end of the water pump, one end of the connecting pipe I communicated with the shell I, one end of the shell I communicated with a connecting pipe II, one end of the connecting pipe II extended into the inside of the rear shell of the imager, and a coiled pipe fixedly connected to the connecting pipe II.

[0010] Preferably, the shell II comprises a fan rotatably connected to the inside of the shell II, a transmission shaft II fixed to one end of the fan, a driven pulley fixed to one end of the transmission shaft II away from the fan, a fixed frame fixed to the outer side of the shell II, the fixed frame fixedly connected to the rear shell of the imager at one end away from the shell II, a support seat rotatably connected to the outer side of the transmission shaft II, the support seat fixedly connected to the fixed frame, a driving pulley fixed to one end of the transmission shaft I, and a synchronous belt transmissionally connected between the driving pulley and the driven pulley.

[0011] Preferably, one end of the slide away from the groove plate is fixedly connected with a linkage rod, one end of the linkage rod is fixedly connected with a piston plate, the outer side of the piston plate is sealingly sleeved with a sealing tank, one end of the linkage rod is slidingly sleeved with the sealing tank, the outer side of the sealing tank is fixedly connected with a connecting plate, the connecting plate is fixedly connected with the fixed arm, the top of the sealing tank is fixedly connected with an air inlet hose through a one-way valve, one end of the air inlet hose away from the sealing tank is fixedly connected with a communication pipe, the communication pipe is communicated with the end of the side arm assembly, and the bottom of the sealing tank is fixedly connected with an air outlet pipe through a one-way valve.

[0012] Preferably, the front side of the shell II is provided with an air outlet, and the rear side of the shell II is provided with an air inlet hole.

[0013] Preferably, the diameter of the driving pulley is larger than the diameter of the driven pulley.

[0014] Compared with the prior art, the present application has the following advantages: 1. The present application can automatically clean the dust on the surface of the ventilation window of the rear shell of the imager through the cooperative action of the moving unit and the dust cleaning unit, effectively prevents the ventilation window from being blocked due to too much dust accumulated on the surface of the ventilation window, thereby ensuring the normal operation of the heat dissipation system inside the imager, and further enhances the heat dissipation efficiency of the key heat generating components of the imager by using the heat dissipation mode of the circulating cooling liquid of the liquid cooling unit.

[0015] 2、The driving unit in the application can drive the soothing unit to work, and the soothing unit blows to the patient's face in a soft and uniform manner, creating a comfortable and relaxed scanning environment for the patient, effectively relieving the tension and discomfort of the patient during the scanning process. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the application; Figure 2 It is a schematic diagram of the structure of the application from another perspective; Figure 3 It is a schematic diagram of the local structure of the application; Figure 4 It is a schematic diagram of the side view of the dust removal unit of the application; Figure 5 It is a schematic diagram of the structure of the moving unit of the application; Figure 6 It is a schematic diagram of the structure of the driving unit of the application; Figure 7 It is a schematic diagram of the structure of the liquid cooling unit of the application; Figure 8 It is a schematic diagram of the structure of the application Figure 7 It is a schematic diagram of the structure from another perspective; Figure 9 It is a schematic diagram of the structure of the soothing unit of the application; Figure 10 It is a schematic diagram of the local structure of the outer side of the side arm assembly of the application.

[0017] In the figure: 1, front shell of imager; 2, rear shell of imager; 3, side arm assembly; 4, ventilation window; 5, base; 6, dust removal unit; 7, moving unit; 8, liquid cooling unit; 9, driving unit; 10, soothing unit; 11, U-shaped plate; 12, brush; 13, guide rod; 14, limit block; 15, compression spring; 16, connecting frame; 17, slot plate; 18, slide bar; 19, pin rod; 20, rotating arm; 21, fixed arm; 22, mounting box; 23, worm; 24, worm gear; 25, driving bevel gear; 26, driven bevel gear; 27, shell one; 28, driving impeller; 29, transmission shaft one; 30, cooling liquid tank; 31, water pump; 32, connecting pipe one; 33, connecting pipe two; 34, coiled pipe; 35, shell two; 36, fan; 37, transmission shaft two; 38, driven pulley; 39, fixed frame; 40, driving pulley; 41, support seat; 42, synchronous belt; 43, linkage rod; 44, piston plate; 45, sealing box; 46, connecting plate; 47, air inlet hose; 48, communication pipe; 49, air outlet pipe; 50, air outlet; 51, air inlet hole. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0019] Embodiment one: please refer to Figures 1-3 , a kind of oral face scanning three-dimensional imager in the illustration, including imager front shell 1, the rear side of the imager front shell 1 is fixed with imager rear shell 2, both sides of the imager rear shell 2 are rotatably installed with side arm assembly 3, the rear side of the imager rear shell 2 is fixed with ventilation window 4, the bottom of the imager rear shell 2 is fixed with base 5, install multiple groups of camera assemblies in the space between imager front shell 1 and imager rear shell 2, the three-dimensional information of oral face surface is calculated according to the deformation of pattern by camera from different angles to shoot patient face, can accurately obtain real face 3D data in short time, and camera is also installed at the end of side arm assembly 3, so as to capture face information at two side angles, realize multi-angle face information data acquisition, and the heat generated when multiple camera assemblies work is dissipated through ventilation window 4; It also includes: dust cleaning unit 6 arranged outside the ventilation window 4, the dust cleaning unit 6 is used to clean the dust adsorbed on the ventilation window 4, one side of the dust cleaning unit 6 is installed with moving unit 7;Liquid cooling unit 8 is installed between the inside and outside of the imager rear shell 2, drive unit 9 is transmissionally connected between the liquid cooling unit 8 and the moving unit 7, through the cooperative action of moving unit 7 and dust cleaning unit 6, the surface dust of ventilation window 4 on imager rear shell 2 can be automatically cleaned, the ventilation holes are effectively prevented from being blocked by too much dust accumulated on the surface of ventilation window 4, so as to ensure the normal operation of the heat dissipation system in the imager, and the heat dissipation efficiency of the key heating components of the imager can be further enhanced by using the heat dissipation mode of circulating coolant of liquid cooling unit 8; Relieving unit 10 is installed on the outside of the imager rear shell 2, the relieving unit 10 is used for air outlet relaxation treatment to the patient face facing the front side of the imager, the relieving unit 10 can be driven to work by drive unit 9, the relieving unit 10 blows to the patient face in a soft and uniform manner, creates a comfortable and relaxed scanning environment for the patient, effectively relieves the tension and discomfort emotions of the patient in the scanning process.

[0020] Further, refer to Figure 4The dust sweeping unit 6 comprises a U-shaped plate 11, the length of the U-shaped plate 11 is greater than the diameter of the ventilation window 4, the inner side of the U-shaped plate 11 is provided with a brush 12, two guide rods 13 are fixed on the side of the brush 12 away from the ventilation window 4, the guide rods 13 are slidingly sleeved with the U-shaped plate 11, the end of the guide rods 13 away from the brush 12 is fixed with a limiting block 14, the limiting block 14 and the U-shaped plate 11 are sleeved with a compression spring 15, the outer side of the U-shaped plate 11 is fixed with a connecting frame 16, and the bottom of the moving unit 7 is fixed with the connecting frame 16.

[0021] Specifically, the brush 12 installed on the inner side of the U-shaped plate 11 is in close contact with the surface of the ventilation window 4, and the contact pressure is stably maintained under the continuous pressure of the compression spring 15 device, the brush 12 on the inner side of the U-shaped plate 11 is made of special material and can effectively fit the irregular contour of the surface of the ventilation window 4, and the compression spring 15 provides uniform and adjustable compression force for the entire contact system through its elastic deformation characteristics, ensuring that the cleaning or sealing effect reaches the best state.

[0022] Further, referring to Figure 5 The moving unit 7 comprises a groove plate 17, one end of the connecting frame 16 away from the U-shaped plate 11 is fixed with the top of the groove plate 17, both ends of the groove plate 17 are fixed with sliding strips 18, the groove plate 17 is slidingly connected with a pin rod 19, one end of the pin rod 19 is fixed with a rotating arm 20, the outer side of the sliding strip 18 is slidingly sleeved with a fixed arm 21, and the output end of the driving unit 9 is fixedly connected with the rotating arm 20.

[0023] The principle of the reciprocating movement of the brush 12 driven by the moving unit 7 is that the driving unit 9 provides power and drives the rotating arm 20 to rotate, the rotating rotating arm 20 is linked with the pin rod 19, so that the pin rod 19 can smoothly slide in the guide groove of the groove plate 17, with the reciprocating movement of the pin rod 19, the sliding strips 18 on both sides of the groove plate 17 move horizontally, so as to realize the left and right movement of the sliding strips 18 in the horizontal direction, and then drive the connecting frame 16 on the top of the groove plate 17 to move left and right reciprocally, and finally drive the brush 12 to move back and forth on the surface of the ventilation window 4, so as to realize the overall cleaning operation on the surface of the ventilation window 4.

[0024] Further, referring to Figure 6The driving unit 9 comprises a mounting box 22 fixedly connected with the imaging instrument rear shell 2, a worm 23 rotatably installed in the mounting box 22, a worm wheel 24 meshingly connected with one side of the worm 23, a middle shaft of the worm wheel 24 rotatably connected with the mounting box 22, an outer end of the middle shaft of the worm wheel 24 fixedly connected with the rotating arm 20, a driving bevel gear 25 rotatably connected with the inner rear side of the mounting box 22, a driven bevel gear 26 meshingly connected with the driving bevel gear 25, one end of the driven bevel gear 26 fixedly sleeved with the worm 23, a shell one 27 fixedly connected with the rear side of the mounting box 22, a driving impeller 28 rotatably connected in the shell one 27, one end of the driving impeller 28 fixedly connected with the middle shaft of the driving bevel gear 25, a transmission shaft one 29 fixedly connected with one end of the middle shaft of the driving bevel gear 25, an input end of the soothing unit 10 drivingly connected with the transmission shaft one 29, and one end of the fixed arm 21 fixedly connected with the mounting box 22. Wherein, please refer to Figure 7 and Figure 8 The liquid cooling unit 8 comprises a cooling liquid tank 30 installed on the inner side of the base 5, a water pump 31 fixedly connected with the top of the cooling liquid tank 30, an input end of the water pump 31 communicated with the cooling liquid tank 30 through a pipeline, a connecting pipe one 32 connected with the output end of the water pump 31, one end of the connecting pipe one 32 away from the water pump 31 communicated with the shell one 27, one end of the shell one 27 away from the connecting pipe one 32 communicated with a connecting pipe two 33, one end of the connecting pipe two 33 inserted into the inside of the imaging instrument rear shell 2 and fixedly connected with a serpentine pipe 34, and the bottom end of the serpentine pipe 34 communicated with the inside of the cooling liquid tank 30.

[0025] Specifically, when the water pump 31 pumps out the cooling liquid in the cooling liquid tank 30, the cooling liquid enters the shell one 27 from the connecting pipe one 32, and drives the driving impeller 28 to rotate in the shell one 27, the driving impeller 28 drives the driving bevel gear 25 to rotate, the driving bevel gear 25 drives the driven bevel gear 26 to rotate, the driven bevel gear 26 drives the worm 23 to rotate, the worm 23 drives the worm wheel 24 to rotate, and the worm wheel 24 drives the rotating arm 20 to rotate, thereby providing driving force for the reciprocating movement of the moving unit 7. At the same time, the cooling liquid passing through the shell one 27 keeps stable flow in the connecting pipe two 33, and is further introduced into the serpentine pipe 34 in the imaging instrument rear shell 2, the serpentine pipe 34 can significantly prolong the flow path of the cooling liquid, thereby ensuring that the cooling liquid realizes more sufficient heat exchange process in the imaging instrument rear shell 2, and in the whole flow process, not only the heat dissipation efficiency is improved, but also the uniformity of the temperature distribution in the imaging instrument is ensured.

[0026] Example two: please refer to Figure 9The embodiment is further illustrated based on the first embodiment, and the difference is that a soothing unit 10 is additionally arranged to perform air blowing relaxation treatment on the patient's face facing the front side of the imager.

[0027] Specifically, the soothing unit 10 comprises a shell 35, a fan 36 is rotatably connected inside the shell 35, a transmission shaft 37 is fixed at one end of the fan 36, a driven pulley 38 is fixed at an end of the transmission shaft 37 away from the fan 36, a fixing frame 39 is fixed outside the shell 35, the fixing frame 39 is fixedly connected with the imager rear shell 2 at an end away from the shell 35, a support seat 41 is rotatably connected outside the transmission shaft 37, the support seat 41 is fixedly connected with the fixing frame 39, a driving pulley 40 is fixed at one end of the transmission shaft 29, and a synchronous belt 42 is transmissionally connected between the driving pulley 40 and the driven pulley 38. Meanwhile, an air outlet 50 is formed in the front side of the shell 35, and an air inlet hole 51 is formed in the rear side of the shell 35. The air outlet 50 is in a strip shape and can uniformly and directionally blow soothing air flow to the patient's face. The air inlet hole 51 is uniformly distributed in the rear side of the shell 35 to ensure that external air can smoothly enter the inside of the shell 35, providing sufficient air flow source for the fan 36, so that the fan 36 can stably operate and produce appropriate strength wind, which acts on the patient's face through the air outlet 50 to help the patient relax during the scanning process.

[0028] It should be noted that the transmission shaft 29 is driven to rotate by the driving bevel gear 25, the driving pulley 40 is driven to rotate by the transmission shaft 29, the driven pulley 38 is driven to rotate by the synchronous belt 42, the transmission shaft 37 is driven to rotate by the driven pulley 38, and the fan 36 is driven to rotate by the transmission shaft 37. When the fan 36 rotates, it will produce continuous and stable air flow. The air flow enters the inside of the shell 35 through the air inlet hole 51 in the rear side of the shell 35, is accelerated and pressurized under the action of the fan 36, and then is uniformly and directionally blown to the patient's face through the air outlet 50 in the front side of the shell 35. This directional blowing of soothing air flow can effectively interfere with the tactile nerve signal transmission of the patient's face skin, to a certain extent, relieve the patient's nervousness and discomfort caused by long-time maintaining fixed posture for scanning, so that the patient can be more relaxed during the scanning process, thereby improving the success rate of scanning and the imaging quality.

[0029] Meanwhile, it is worth noting that the wheel diameter of the driving pulley 40 is larger than that of the driven pulley 38. When the wheel diameter of the driving pulley 40 is larger than that of the driven pulley 38, the speed of the driven pulley 38 will be faster than that of the driving pulley 40 during the rotation of the driving pulley 40 driving the driven pulley 38. This makes the speed of the transmission shaft 37 driving the fan 36 reach a more appropriate range, neither too fast to cause turbulent airflow and make the patient feel uncomfortable, nor too slow to generate airflow with insufficient strength and stability, thus effectively interfering with the transmission of the cutaneous nerve signal of the patient's facial skin, and further reducing the patient's tension and discomfort caused by maintaining a fixed posture for a long time during scanning.

[0030] Embodiment three: please refer to Figure 10 The present embodiment further illustrates other embodiments, the difference being that the heat dissipation mode of the side arm assembly 3 is optimized.

[0031] Specifically, the moving unit 7 comprises a groove plate 17, one end of the connecting frame 16 away from the U-shaped plate 11 is fixed to the top of the groove plate 17, both ends of the groove plate 17 are fixed with sliding bars 18, a pin rod 19 is slidably connected in the groove plate 17, one end of the pin rod 19 is fixed with a rotating arm 20, the outer side of the sliding bar 18 is slidably sleeved with a fixed arm 21, the output end of the driving unit 9 is fixedly connected with the rotating arm 20; one end of the sliding bar 18 away from the groove plate 17 is fixed with a linkage rod 43, one end of the linkage rod 43 is fixed with a piston plate 44, the outer side of the piston plate 44 is sealingly sleeved with a sealing box 45, the linkage rod 43 is slidably sleeved with one end of the sealing box 45, the outer side of the sealing box 45 is fixed with a connecting plate 46, the connecting plate 46 is fixedly connected with the fixed arm 21, the top of the sealing box 45 is fixed with an air inlet hose 47 through a one-way valve, one end of the air inlet hose 47 away from the sealing box 45 is fixed with a communication pipe 48, the communication pipe 48 is connected with the end of the side arm assembly 3, the bottom of the sealing box 45 is fixed with an air outlet pipe 49 through a one-way valve.

[0032] Specifically, due to the space between the side arm assembly 3 and the imaging instrument front shell 1 and the imaging instrument rear shell 2 is not communicated, the liquid cooling unit 8 cannot dissipate heat, so it needs to be cooled separately, at this time the slide 18 reciprocates left and right, the linkage rod 43 reciprocates left and right, and then the piston plate 44 reciprocates left and right in the sealed box 45, the piston plate 44 draws the hot gas flow in the side wall assembly into the sealed box 45 again through the air inlet hose 47 and the communication pipe 48, and then discharges it from the air outlet pipe 49, so that the circulation of the hot gas flow is realized, and the heat exchange between the hot gas flow and the surrounding environment during the flow process is utilized to adjust the temperature of the side arm assembly 3, and further avoid the adverse effects of the high or low temperature of the camera in the side arm assembly 3 on the scanning results, and ensure that the entire imaging instrument can continuously, stably and accurately complete the three-dimensional scanning imaging work of the oral and facial parts.

[0033] It should be noted that the relational terms herein, such as first and second, are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0034] Although the embodiments of the present application have been shown and described, it is understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An oral facial scanning three-dimensional imager, comprising: an imager front shell (1), the rear side of the imager front shell (1) is fixed with an imager rear shell (2), both sides of the imager rear shell (2) are rotatably installed with side arm assemblies (3), the rear side of the imager rear shell (2) is fixed with a ventilation window (4), and the bottom of the imager rear shell (2) is fixed with a base (5); characterized in that it further comprises: a dust cleaning unit (6) arranged outside the ventilation window (4), the dust cleaning unit (6) is used for cleaning dust adsorbed on the ventilation window (4), and one side of the dust cleaning unit (6) is installed with a moving unit (7); a liquid cooling unit (8) installed between the inside and outside of the imager rear shell (2), and a driving unit (9) is drivingly connected between the liquid cooling unit (8) and the moving unit (7); a soothing unit (10) installed outside the imager rear shell (2), the soothing unit (10) is used for air blowing and relaxing treatment on the face of a patient facing the front side of the imager.

2. An oral facial scan three-dimensional imager according to claim 1, wherein: The dust cleaning unit (6) comprises a U-shaped plate (11), the length of the U-shaped plate (11) is greater than the diameter of the ventilation window (4), the inner side of the U-shaped plate (11) is provided with a brush (12), two guide rods (13) are fixed on the side of the brush (12) away from the ventilation window (4), the guide rods (13) are slidably sleeved with the U-shaped plate (11), a limiting block (14) is fixed on the end of the guide rod (13) away from the brush (12), a compression spring (15) is sleeved between the limiting block (14) and the U-shaped plate (11), a connecting frame (16) is fixed on the outer side of the U-shaped plate (11), and the bottom of the moving unit (7) is fixed with the connecting frame (16).

3. An oral facial scan three-dimensional imager according to claim 2, wherein: The moving unit (7) comprises a groove plate (17), one end of the connecting frame (16) away from the U-shaped plate (11) is fixed with the top of the groove plate (17), both ends of the groove plate (17) are fixed with sliding strips (18), a pin rod (19) is slidably connected in the groove plate (17), one end of the pin rod (19) is fixed with a rotating arm (20), a fixed arm (21) is slidably sleeved on the outer side of the sliding strip (18), and the output end of the driving unit (9) is fixedly connected with the rotating arm (20).

4. An oral facial scan three-dimensional imager according to claim 3, wherein: The driving unit (9) includes a mounting box (22) fixedly connected with the imager rear shell (2), a worm (23) rotatably installed inside the mounting box (22), a worm wheel (24) meshingly connected on one side of the worm (23), a middle shaft of the worm wheel (24) rotatably connected with the mounting box (22), an outer end of the middle shaft of the worm wheel (24) fixedly connected with the rotating arm (20), a driving bevel gear (25) rotatably connected inside a rear side of the mounting box (22), a driven bevel gear (26) meshingly connected with the driving bevel gear (25), one end of the driven bevel gear (26) fixedly sleeved with the worm (23), a housing one (27) fixed to a rear side of the mounting box (22), a driving impeller (28) rotatably connected inside the housing one (27), one end of the driving impeller (28) fixedly connected with a middle shaft of the driving bevel gear (25), a transmission shaft one (29) fixedly connected with one end of the middle shaft of the driving bevel gear (25), an input end of the soothing unit (10) drivingly connected with the transmission shaft one (29), and one end of the fixed arm (21) fixedly connected with the mounting box (22).

5. An oral facial scan three-dimensional imager according to claim 4, wherein: The liquid cooling unit (8) includes a cooling liquid tank (30) installed on an inner side of the base (5), a water pump (31) fixedly connected to a top of the cooling liquid tank (30), an input end of the water pump (31) communicated with the cooling liquid tank (30) through a pipeline, an output end of the water pump (31) connected with a connecting pipe one (32), one end of the connecting pipe one (32) away from the water pump (31) communicated with the housing one (27), one end of the housing one (27) away from the connecting pipe one (32) communicated with a connecting pipe two (33), one end of the connecting pipe two (33) inserted into an inside of the imager rear shell (2) and fixedly connected with a coiled pipe (34), and a bottom end of the coiled pipe (34) communicated with an inside of the cooling liquid tank (30).

6. An oral facial scan three-dimensional imager according to claim 4, wherein: The soothing unit (10) includes a housing two (35), a fan (36) rotatably connected inside the housing two (35), a transmission shaft two (37) fixedly connected with one end of the fan (36), a driven pulley (38) fixedly connected with one end of the transmission shaft two (37) away from the fan (36), a fixing frame (39) fixedly connected with an outer side of the housing two (35), one end of the fixing frame (39) away from the housing two (35) fixedly connected with the imager rear shell (2), a support seat (41) rotatably connected with an outer side of the transmission shaft two (37), the support seat (41) fixedly connected with the fixing frame (39), a driving pulley (40) fixedly connected with one end of the transmission shaft one (29), and a synchronous belt (42) drivingly connected between the driving pulley (40) and the driven pulley (38).

7. The oral facial scan three-dimensional imager of claim 3, wherein: The linkage rod (43) is fixed at one end of the slide bar (18) away from the groove plate (17), one end of the linkage rod (43) is fixed with a piston plate (44), the outer side of the piston plate (44) is sealed with a sealing box (45), the linkage rod (43) is slidably connected with one end of the sealing box (45), the outer side of the sealing box (45) is fixed with a connecting plate (46), the connecting plate (46) is fixedly connected with the fixed arm (21), the top of the sealing box (45) is fixed with an air inlet hose (47) through a one-way valve, one end of the air inlet hose (47) away from the sealing box (45) is fixed with a communication pipe (48), the communication pipe (48) is communicated with the end of the side arm assembly (3), the bottom of the sealing box (45) is fixed with an air outlet pipe (49) through a one-way valve.

8. An oral facial scan three-dimensional imager according to claim 6, wherein: The front side of the shell two (35) is provided with an air outlet (50), and the rear side of the shell two (35) is provided with an air inlet hole (51).

9. The oral facial scan three-dimensional imager of claim 6, wherein: The wheel diameter of the driving belt pulley (40) is larger than the wheel diameter of the driven belt pulley (38).

Images