Pneumatic dental descaler

Abstract

The invention discloses a pneumatic dental descaler, and belongs to the technical field of dental descalers, a driving assembly drives a working tip to generate vibration, and the driving assembly guides water to the working tip and sprays the water to cool the working tip and wash teeth, so that the structure of the driving assembly is relatively fixed; only the air inlet pipe, the water inlet pipe and the air return port which are fixed in position need to be arranged at the rear end of the driving assembly, the connecting assembly is connected to the rear end of the driving assembly and is designed into various forms in order to be provided with different types of quick connectors, and the structure of the driving assembly does not need to be changed. According to the requirements of customers, the corresponding connecting assemblies are selected to be assembled to the rear end of the driving assembly, and the various connecting assemblies can be separately and independently produced, so that the production and manufacturing process of the pneumatic dental descaler is simplified, and the production cost is further saved.

Description

Technical Field

[0001] The present invention relates to the technical field of dental scalers, in particular to a pneumatic dental scaler. Background Art

[0002] Pneumatic dental scalers convert pneumatic energy into vibration energy to remove dental calculus. Pneumatic dental scalers generally require an external high-pressure air source. Currently, dental chair equipment is equipped with a connecting pipe for connecting to the pneumatic dental scaler. The connecting pipe is equipped with an air supply pipe, a water supply pipe, a return air pipe and other pipes. The connecting pipe is also equipped with a quick connector that can be easily inserted into the interface of the pneumatic dental scaler. The air supply pipe and the water supply pipe respectively provide high-pressure air and water for dental tools, while the return air pipe provides an exhaust channel for the pneumatic dental scaler. However, the quick connectors for the connecting pipes of different models of dental chair equipment are of different types. Pneumatic dental scalers with corresponding interfaces need to be designed according to the form of the quick connector. Since different interface forms will change the internal structure of the pneumatic dental scaler, the production and manufacturing processes of various pneumatic dental scalers are different, resulting in a significant increase in production costs. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a pneumatic dental scaler with a connection assembly designed in various forms to accommodate different types of quick connectors. The drive assembly does not require structural changes; the corresponding connection assembly is selected based on customer needs and assembled to the rear end of the drive assembly. The various connection assemblies can be produced separately and independently, simplifying the manufacturing process of the pneumatic dental scaler and thereby reducing production costs.

[0004] According to an embodiment of the present invention, a pneumatic dental scaler includes a drive assembly and a connecting assembly, wherein the rear end of the drive assembly is provided with an air inlet pipe, a water inlet pipe, and an air return port, and the interior of the connecting assembly is provided with an air inlet channel, a water inlet channel, and an air return channel separated from each other, the air inlet pipe is connected to the front end of the air inlet channel, the water inlet pipe is connected to the front end of the water inlet channel, the air return port is connected to the air return channel, the rear end of the air inlet channel is provided with an air inlet hole, and the rear end of the water inlet channel is provided with a water inlet hole; The connecting assembly includes a first distribution seat, a first plug hole is provided at the rear end of the first distribution seat, a front end of the first plug hole is connected to the return air channel, and the air inlet and the water inlet are provided on the inner side wall of the first plug hole with a front-to-back spacing; And / or, the connecting assembly includes a second distribution seat and a second shell, the second distribution seat is arranged in the second shell, an air return groove is formed between the outer wall of the second distribution seat and the inner wall of the second shell, the air return groove is connected to the rear end of the air return channel, a second plug hole is provided at the rear end of the second distribution seat, and the water inlet hole and the air inlet hole are arranged on the inner wall of the second plug hole with a front-to-back interval; And / or, the connecting assembly includes a third distribution seat, and the rear end of the return air channel, the water inlet hole and the air inlet hole are arranged on the outer side wall of the third distribution seat at intervals in front and back.

[0005] The pneumatic dental scaler according to the embodiment of the present invention has at least the following beneficial effects: the driving component drives the working tip to vibrate, and the driving component guides water to the working tip to spray out to cool the working tip and rinse the teeth. Therefore, the structure of the driving component is relatively fixed, and only the rear end of the driving component needs to be provided with a fixed air inlet pipe, a water inlet pipe and an air return port, and the connecting component is connected to the rear end of the driving component. The connecting component is designed in various forms to be equipped with different types of quick connectors. The driving component does not need to change its structure. The corresponding connecting component is selected according to customer needs and assembled to the rear end of the driving component. The various connecting components can be produced separately and independently, which simplifies the production and manufacturing process of the pneumatic dental scaler and saves production costs.

[0006] An air return port is provided at the front end of the first quick connector, and an air supply port and a water supply port separated front and back are provided on the outer side wall of the first quick connector. For this purpose, the connection component selects a first distribution seat, and the interior of the first distribution seat is provided with an air intake channel, a water intake channel and a return air channel, and the first socket at the rear end of the first distribution seat is used for inserting the first quick connector to facilitate the cooperation between the first quick connector and the first distribution seat.

[0007] A water supply port is provided at the front end of the second quick connector, and an air supply port is provided on the outer wall. A sleeve is also provided on the periphery of the second quick connector, and an air return port is provided on the inner wall of the sleeve. For this purpose, the connecting component selects a second shell and a second distribution seat, and an air return groove connecting to the return air channel is formed between the inner wall of the second shell and the outer wall of the second distribution seat. The second socket of the second distribution seat is used for inserting the second quick connector, and the sleeve is inserted between the inner wall of the second shell and the outer wall of the second distribution seat, so that the second quick connector can be matched with the second shell and the second distribution seat.

[0008] The third type of quick connector is provided with a sleeve, and the inner wall of the sleeve is provided with a return air port, a water supply port and an air supply port spaced apart in the front and back. For this purpose, the connection component uses a third distribution seat, and the outer wall of the third distribution seat is provided with a rear end of the return air channel, a water inlet hole and an air inlet hole spaced apart in the front and back. The sleeve of the third type of quick connector is sleeved on the outside of the third distribution seat, so that the third type of quick connector cooperates with the third distribution seat.

[0009] According to some embodiments of the present invention, a connecting ring is provided at the rear end of the driving assembly, and a connecting groove is provided at the front end of the connecting assembly. The connecting groove is circumferentially arranged, and the connecting ring is inserted into the connecting groove.

[0010] According to some embodiments of the present invention, the connection assembly further includes a first shell, the first distribution seat is disposed in the first shell, and the outer side wall of the front end of the first distribution seat and the inner side wall of the front end of the first shell form the connection groove; And / or, the outer side wall of the front end of the second distribution seat and the inner side wall of the front end of the second shell form the connecting groove; And / or, the connection assembly further includes a third shell, the third distribution seat is arranged in the third shell, and the outer side wall of the front end of the third distribution seat and the inner side wall of the front end of the third shell form the connection groove.

[0011] According to some embodiments of the present invention, a first convex ring is provided at the rear end of the first housing, and a front wall of the first convex ring abuts against the rear end of the first dispensing seat; And / or, the inner side wall of the second shell is provided with a second convex ring, the outer side wall of the second distribution seat is provided with a second protrusion, and the rear wall of the second protrusion abuts against the front wall of the second convex ring; And / or, the inner side wall of the third shell is provided with a third convex ring, the outer side wall of the third distribution seat is provided with a third protrusion, and the rear wall of the third protrusion abuts against the front wall of the third convex ring.

[0012] According to some embodiments of the present invention, a first sealing ring is provided between the rear end of the inner side wall of the first shell and the rear end of the outer side wall of the first distribution seat.

[0013] According to some embodiments of the present invention, the pneumatic dental scaler further comprises: The connecting sealing ring is arranged between the connecting ring and the connecting groove.

[0014] According to some embodiments of the present invention, a plurality of sealing convex rings spaced apart from each other are provided on the inner side wall of the first insertion hole, a connecting groove is formed between every two of the sealing convex rings, and the air inlet and the water inlet are respectively provided in the two connecting grooves.

[0015] According to some embodiments of the present invention, the second socket includes a front section and a rear section arranged front to back, the diameter of the front section is smaller than the diameter of the rear section, the water inlet is provided in the front section, and the air inlet is provided in the rear section.

[0016] According to some embodiments of the present invention, the connection component further comprises: Multiple third sealing rings are arranged on the outer wall of the third distribution seat in sequence and at intervals along the front-to-back direction, a conducting section is provided between every two third sealing rings, and the rear end of the return air channel, the water inlet hole and the air inlet hole are respectively provided in the three conducting sections.

[0017] According to some embodiments of the present invention, the air inlet pipe and the water inlet pipe protrude backward, the air inlet pipe is inserted into the front end of the air inlet channel, and the water inlet pipe is inserted into the front end of the water inlet channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic cross-sectional view of a drive assembly according to an embodiment of the present invention, wherein arrows represent airflow directions; Figure 2 is a schematic cross-sectional view of a drive assembly according to an embodiment of the present invention from another angle, wherein arrows represent the direction of water flow; Figure 3 is a schematic cross-sectional view of a pneumatic dental scaler according to a first embodiment of the present invention, wherein arrows represent airflow directions; Figure 4 is a schematic cross-sectional view of the pneumatic dental scaler according to the first embodiment of the present invention from another angle, wherein the arrows represent the direction of water flow; Figure 5 is a schematic cross-sectional view of a pneumatic dental scaler according to a second embodiment of the present invention, wherein arrows represent airflow directions; Figure 6 is a schematic cross-sectional view of the pneumatic dental scaler according to the second embodiment of the present invention from another angle, wherein the arrows represent the direction of water flow; Figure 7 is a schematic cross-sectional view of a pneumatic dental scaler according to a third embodiment of the present invention, wherein arrows represent airflow directions; Figure 8 is a schematic cross-sectional view of the pneumatic dental scaler according to the third embodiment of the present invention from another angle, wherein the arrows represent the direction of water flow; Figure 9 is a rear view schematic diagram of a pneumatic dental scaler according to a third embodiment of the present invention; Figure 10 is a schematic cross-sectional view of a pneumatic dental scaler according to a fourth embodiment of the present invention, wherein arrows represent airflow directions; Figure 11 is a schematic cross-sectional view of the pneumatic dental scaler according to the fourth embodiment of the present invention from another angle, wherein the arrows represent the direction of water flow; Figure 12 is a rear view schematic diagram of a pneumatic dental scaler according to a fourth embodiment of the present invention; Figure 13 is a schematic cross-sectional view of a pneumatic dental scaler according to a fifth embodiment of the present invention, wherein arrows represent airflow directions; Figure 14 FIG1 is a cross-sectional view of the pneumatic dental scaler according to the fifth embodiment of the present invention from another angle, wherein the arrow represents the direction of water flow.

[0019] Figure 1: Driving assembly 100, air inlet pipe 110, water inlet pipe 120, air return port 130, connecting ring 140, air return chamber 150, vibration chamber 160, mounting hole 161, vibration cylinder 170, air outlet hole 171, limiting ring 172, vibration sleeve 180, water injection pipe 190, connecting assembly 200, air inlet channel 210, air inlet hole 211, water inlet channel 220, water inlet hole 221, air return channel 230, connecting groove 240, first distribution seat 300, first jack 301, sealing convex ring 302, connecting groove 303, first shell 310, first convex ring 311, first sealing ring 320, second distribution seat 400, second jack 401, front section 4011, rear section 4012, second protrusion 402, second shell 410, second convex ring 411, return air groove 420, third distribution seat 500, third protrusion 501, third shell 510, third convex ring 511, third sealing ring 520, conducting section 530, connecting sealing ring 600. DETAILED DESCRIPTION

[0020] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms front, rear, up, down, axial, circumferential, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention.

[0022] In the description of this invention, "above," "below," and "within" are understood to be exclusive of the number indicated. The terms "first" and "second" are used solely to distinguish technical features and are not to be construed as indicating or implying relative importance, or as implicitly specifying the number or order of the technical features indicated.

[0023] In the description of the present invention, it should be noted that terms such as setting, installing, and connecting should be understood in a broad sense, and technical personnel in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0024] The technical solutions of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments.

[0025] Reference Figures 1 to 14 As shown, the present invention provides a pneumatic dental scaler.

[0026] Reference Figure 1 and Figure 2 As shown, the pneumatic dental scaler includes a driving assembly 100 , and an air inlet pipe 110 , a water inlet pipe 120 and an air return port 130 are provided at the rear end of the driving assembly 100 .

[0027] Reference Figure 1 and Figure 2 As shown, an air inlet pipe 110 and a water inlet pipe 120 are arranged inside the driving component 100. A return air chamber 150 is also provided inside the driving component 100. The return air chamber 150, the air inlet pipe 110 and the water inlet pipe 120 are separated from each other, and a return air port 130 is provided at the rear end of the return air chamber 150.

[0028] A vibration chamber 160 is further provided in the middle of the driving assembly 100 . The rear end of the vibration chamber 160 is connected to the air inlet pipe 110 , the middle of the vibration chamber 160 is connected to the return air chamber 150 , and the front end of the vibration chamber 160 is open.

[0029] The driving assembly 100 is also provided with a vibration cylinder 170, which is arranged in the vibration cavity 160, and the rear end of the vibration cylinder 170 is sealed from the inner wall of the vibration cavity 160, and the front end of the vibration cylinder 170 is sealed from the inner wall of the vibration cavity 160. The middle side wall of the vibration cylinder 170 is provided with a plurality of through air outlet holes 171, and the front end of the vibration cylinder 170 extends forward. The outer side wall of the vibration cylinder 170 is provided with two limiting rings 172 spaced apart in front and back, and all the air outlet holes 171 are located between the two limiting rings 172. The plurality of air outlet holes 171 are spaced apart along the circumference of the vibration cylinder 170, and the axes of the plurality of air outlet holes 171 are staggered from the center of the vibration cylinder 170.

[0030] A vibration sleeve 180 is sleeved on the middle part of the vibration cylinder 170, and the vibration sleeve 180 is movably set between the two limit rings 172. The vibration sleeve 180 is set on the periphery of the multiple air outlet holes 171, and a space is left between the inner wall of the vibration sleeve 180 and the outer wall of the vibration cylinder 170 to facilitate the gas blown out from the inner wall of the vibration sleeve 180 and the outer wall of the vibration cylinder 170 to flow out from between the inner wall of the vibration sleeve 180 and the outer wall of the vibration cylinder 170.

[0031] The drive assembly 100 is also provided with a water injection pipe 190, which is arranged inside the vibration cylinder 170. The rear end of the vibration chamber 160 is provided with a mounting hole 161. The rear end of the water injection pipe 190 is sealed in the mounting hole 161. The mounting hole 161 is connected to the water inlet pipe 120. The water injection pipe 190 extends forward to the front end of the vibration cylinder 170. The front end outer wall of the water injection pipe 190 is sealed with the inner wall of the vibration cylinder 170.

[0032] The working tip passes through the front end of the vibration cavity 160 and is installed at the front end of the vibration cylinder 170 , and the working tip is communicated with the front end of the water injection pipe 190 .

[0033] Reference Figure 1 As shown, the gas entering from the air inlet pipe 110 flows into the rear end of the vibration cylinder 170 through the vibration chamber 160, and the gas flows out through the air outlet 171. The continuously flowing gas causes the vibration cylinder 170 and the vibration sleeve 180 to vibrate. The gas flows out from the air outlet 171 to the vibration chamber 160 and then enters the return air chamber 150. Finally, the gas flows from the return air chamber 150 to the return air port 130.

[0034] Reference Figure 2 As shown, water entering from the water inlet pipe 120 flows into the rear end of the water injection pipe 190 through the installation hole 161, and the water flows along the water injection pipe 190 toward the working tip.

[0035] Reference Figures 3 to 14 As shown, an air inlet channel 210 , a water inlet channel 220 and an air return channel 230 are provided inside the connection assembly 200 , and the air inlet channel 210 , the water inlet channel 220 and the air return channel 230 are separated from each other.

[0036] The connecting assembly 200 is connected to the rear end of the driving assembly 100, the front end of the air inlet channel 210 is connected to the air inlet pipe 110, the front end of the water inlet channel 220 is connected to the water inlet pipe 120, the front end of the return air channel 230 is connected to the return air port 130, and the rear end of the air inlet channel 210 is provided with an air inlet hole 211, and the rear end of the water inlet channel 220 is provided with a water inlet hole 221.

[0037] Reference Figures 3 to 6 As shown, the connection assembly 200 is provided with a first distribution seat 300 .

[0038] A first plug hole 301 extending forward is provided at the rear end of the first distribution seat 300 . The air inlet channel 210 and the water inlet channel 220 are provided inside the first distribution seat 300 . The air inlet channel 210 and the water inlet channel 220 extend forward and backward along the side walls of the first plug hole 301 .

[0039] The front end of the first insertion hole 301 is connected to the rear end of the return air channel 230 . The air inlet 211 and the water inlet 221 are arranged on the inner side wall of the first insertion hole 301 , and the air inlet 211 and the water inlet 221 are spaced apart from each other.

[0040] An air return port is provided at the front end of the first quick connector, and an air supply port and a water supply port separated front and back are provided on the outer side wall of the first quick connector.

[0041] To this end, the connection component 200 uses a first distribution seat 300, which is internally provided with an air inlet channel 210, a water inlet channel 220 and a return air channel 230, and the first socket 301 at the rear end of the first distribution seat 300 is used for inserting the first quick connector.

[0042] When the first quick connector is matched with the first distribution seat 300 , the return air port is connected to the rear end of the return air channel 230 through the front end of the first jack 301 , the air supply port is connected to the air inlet 211 , and the water supply port is connected to the water inlet 221 .

[0043] Reference Figures 7 to 12 As shown, the connection assembly 200 is provided with a second distribution seat 400 and a second housing 410 .

[0044] The second shell 410 is cylindrical, the second distribution seat 400 is installed inside the second shell 410, the air inlet channel 210 and the water inlet channel 220 are arranged inside the second distribution seat 400, and the return air channel 230 is arranged in the space between the inner wall of the second shell 410 and the outer wall of the second distribution seat 400.

[0045] Reference Figure 9 and Figure 12 As shown, an air return groove 420 is formed between the inner wall of the second shell 410 and the outer wall of the second distribution seat 400 , and the air return groove 420 connects the rear end of the air return channel 230 with the rear space of the connecting assembly 200 .

[0046] A second socket 401 extending forward is provided at the rear end of the second distribution seat 400, and the air inlet channel 210 and the water inlet channel 220 extend front and back along the side wall of the second socket 401. The water inlet hole 221 and the air inlet hole 211 are arranged on the inner wall of the second socket 401, and the water inlet hole 221 and the air inlet hole 211 are spaced apart from each other front and back.

[0047] The front end of the second quick connector is provided with a water supply port, the outer side wall is provided with an air supply port, the periphery of the second quick connector is further provided with a sleeve, and the inner side wall of the sleeve is provided with an air return port.

[0048] To this end, the connecting assembly 200 selects a second shell 410 and a second distribution seat 400, and a return air groove 420 connected to the return air channel 230 is formed between the inner wall of the second shell 410 and the outer wall of the second distribution seat 400. The second socket 401 of the second distribution seat 400 is used for inserting the second quick connector, and the sleeve is inserted between the inner wall of the second shell 410 and the outer wall of the second distribution seat 400.

[0049] The second quick connector is matched with the second shell 410 and the second distribution seat 400, and the return air port is connected to the rear end of the return air channel 230 through the return air groove 420, the water supply port is connected to the water inlet hole 221, and the air supply port is connected to the air inlet hole 211.

[0050] Reference Figure 13 and Figure 14 As shown, the connection assembly 200 is provided with a third distribution seat 500 .

[0051] The air intake channel 210, the water intake channel 220 and the return air channel 230 are arranged inside the third distribution seat 500, and the air intake channel 210, the water intake channel 220 and the return air channel 230 extend in the front-to-back direction. The rear ends of the air intake hole 211, the water intake hole 221 and the return air channel 230 are arranged on the outer wall of the third distribution seat 500, and the rear ends of the return air channel 230, the water intake hole 221 and the air intake hole 211 are spaced apart from front to back.

[0052] The third type of quick connector is provided with a sleeve, and an air return port, a water supply port and an air supply port are provided on the inner side wall of the sleeve at intervals in front and back.

[0053] To this end, the connection assembly 200 uses a third distribution seat 500 , and the outer wall of the third distribution seat 500 is provided with a rear end of the return air channel 230 , a water inlet hole 221 and an air inlet hole 211 spaced apart from each other.

[0054] The sleeve of the third quick connector is sleeved on the outside of the third distribution seat 500, so that the third quick connector cooperates with the third distribution seat 500, the return air port is connected to the rear end of the return air channel 230, the water supply port is connected to the water inlet hole 221, and the air supply port is connected to the air inlet hole 211.

[0055] The driving assembly 100 drives the working tip to vibrate, and the driving assembly 100 guides water to spray out the working tip to cool the working tip and rinse the teeth. Therefore, the structure of the driving assembly 100 is relatively fixed. It is only necessary to set the fixed air inlet pipe 110, water inlet pipe 120 and return air port 130 at the rear end of the driving assembly 100, and the connecting assembly 200 is connected to the rear end of the driving assembly 100. The connecting assembly 200 is designed in various forms to be equipped with different types of quick connectors. The driving assembly 100 does not need to change its structure. According to customer needs, the corresponding connecting assembly 200 is selected and assembled to the rear end of the driving assembly 100. Various connecting assemblies 200 can be produced separately and independently, simplifying the production process of the pneumatic dental scaler and thus saving production costs.

[0056] In some embodiments, reference Figures 1 to 14As shown, the rear end of the driving assembly 100 is provided with a connecting ring 140 extending backward, and the connecting ring 140 is arranged around the outer circumference of the driving assembly 100. The front end of the connecting assembly 200 is provided with a matching connecting groove 240, and the connecting groove 240 is arranged around the circumference of the connecting assembly 200. The connecting ring 140 is inserted into the connecting groove 240 to connect the rear end of the driving assembly 100 with the connecting assembly 200.

[0057] All types of connection components 200 are matched with the connection ring 140 at the rear end of the driving component 100 through the connection groove 240 at the front end, making the assembly of the connection component 200 and the driving component 100 more convenient and reducing the assembly cost.

[0058] In some embodiments, reference Figures 3 to 6 As shown, the connecting assembly 200 is also provided with a first shell 310, which is cylindrical. The first distribution seat 300 is arranged inside the first shell 310, and an annular connecting groove 240 is formed between the inner wall of the front end of the first shell 310 and the outer wall of the front end of the first distribution seat 300.

[0059] In some embodiments, reference Figures 7 to 12 As shown, an annular connecting groove 240 is formed between the inner side wall of the front end of the second shell 410 and the outer side wall of the front end of the second distribution seat 400 .

[0060] In some embodiments, reference Figure 13 and Figure 14 As shown, the connecting assembly 200 is also provided with a third shell 510, which is cylindrical. The third distribution seat 500 is arranged inside the third shell 510, and an annular connecting groove 240 is formed between the inner wall of the front end of the third shell 510 and the outer wall of the front end of the third distribution seat 500.

[0061] The three types of connecting assemblies 200 can all form an annular connecting groove 240 to ensure that any one of the three types of connecting assemblies 200 can be quickly assembled to the rear end of the driving assembly 100 .

[0062] In some embodiments, reference Figures 3 to 6 As shown, a first protruding ring 311 protruding inward is provided at the rear end of the first shell 310 , and the rear end of the first dispensing seat 300 abuts against the front side wall of the first protruding ring 311 .

[0063] The rear end of the driving component 100 is matched with the front end of the connecting component 200, and the connecting ring 140 is matched with the connecting groove 240 of the connecting component 200. The rear end of the driving component 100 abuts the first distribution seat 300 of the connecting component 200, and the first convex ring 311 of the first shell 310 abuts the rear end of the first distribution seat 300, so that the first distribution seat 300 can fit tightly to the rear end of the driving component 100, ensuring the air tightness of the connection between the air inlet channel 210 and the air inlet pipe 110, and ensuring the air tightness of the connection between the water inlet channel 220 and the water inlet pipe 120.

[0064] In some embodiments, reference Figures 7 to 12 As shown, the outer wall of the second distribution seat 400 is provided with a second protrusion 402 protruding outward, and the inner wall of the second shell 410 is provided with a second protruding ring 411 protruding inward, and the front side wall of the second protrusion ring 411 abuts against the rear side wall of the second protrusion 402.

[0065] The rear end of the driving component 100 is matched with the front end of the connecting component 200, and the connecting ring 140 is matched with the connecting groove 240 of the connecting component 200. The rear end of the driving component 100 abuts the second distribution seat 400 of the connecting component 200, and the second convex ring 411 of the second shell 410 abuts the second protrusion 402 of the second distribution seat 400, so that the second distribution seat 400 can fit tightly to the rear end of the driving component 100, ensuring the air tightness of the connection between the air inlet channel 210 and the air inlet pipe 110, and ensuring the air tightness of the connection between the water inlet channel 220 and the water inlet pipe 120.

[0066] In some embodiments, reference Figure 13 and Figure 14 As shown, the outer wall of the third distribution seat 500 is provided with a third protrusion 501 protruding outward, and the inner wall of the third shell 510 is provided with a third protruding ring 511 protruding inward, and the front side wall of the third protruding ring 511 abuts the rear side wall of the third protrusion 501.

[0067] The rear end of the driving component 100 is matched with the front end of the connecting component 200, and the connecting ring 140 is matched with the connecting groove 240 of the connecting component 200. The rear end of the driving component 100 abuts the third distribution seat 500 of the connecting component 200, and the third convex ring 511 of the third shell 510 abuts the third protrusion 501 of the third distribution seat 500, so that the third distribution seat 500 can fit tightly to the rear end of the driving component 100, ensuring the air tightness of the connection between the air inlet channel 210 and the air inlet pipe 110, and ensuring the air tightness of the connection between the water inlet channel 220 and the water inlet pipe 120.

[0068] In some embodiments, reference Figures 3 to 6 As shown, a first sealing ring 320 is provided between the rear end of the outer wall of the first distribution seat 300 and the rear end of the inner wall of the first shell 310 for sealing.

[0069] Since the first distribution seat 300 is connected to the rear end of the return air channel 230 through the first socket 301, the gas exhausted by the driving component 100 is discharged through the first socket 301. The first sealing ring 320 is provided to seal the rear end of the outer wall of the first distribution seat 300 and the rear end of the inner wall of the first shell 310 to prevent the exhausted gas from leaking from the first shell 310 of the connecting component 200 and reduce noise.

[0070] In some embodiments, reference Figures 1 to 14 As shown, the pneumatic dental scaler is further provided with a connecting sealing ring 600 , which is installed between the connecting groove 240 and the connecting ring 140 , and is used to seal the gap between the connecting groove 240 and the connecting ring 140 .

[0071] The connection sealing ring 600 is provided to prevent leakage between the rear end of the driving assembly 100 and the front end of the connection assembly 200, thereby improving the airtightness of the pneumatic dental scaler.

[0072] In some embodiments, reference Figures 3 to 6 As shown, a plurality of sealing protrusions 302 are provided on the inner wall of the first insertion hole 301. Each sealing protrusion 302 surrounds the circumference of the first insertion hole 301. The plurality of sealing protrusions 302 are spaced apart along the front-to-back direction so that every two adjacent sealing protrusions form a connecting groove 303. The water inlet 221 and the air inlet 211 are respectively provided in two different connecting grooves 303.

[0073] Multiple sealing rings are spaced apart from each other on the outer wall of the first quick connector from front to back. When the first quick connector is inserted into the first insertion hole 301, the positions of the multiple sealing rings correspond one-to-one with the positions of the multiple sealing protrusions 302, so that multiple communication grooves 303 are formed between the first quick connector and the first insertion hole 301. The air inlet port and the water inlet port on the outer wall of the first quick connector are connected to two different communication grooves 303, so that the air inlet port is connected to the air inlet hole 211, and the water inlet port is connected to the water inlet hole 221, to prevent leakage.

[0074] In some embodiments, reference Figures 7 to 12 As shown, the second insertion hole 401 is a stepped hole with a smaller front portion and a larger rear portion. The second insertion hole 401 is divided into a front section 4011 and a rear section 4012 from front to back. The diameter of the rear section 4012 is larger than the diameter of the front section 4011. The water inlet hole 221 is arranged at the front end of the front section 4011, and the air inlet hole 211 is arranged on the inner side wall of the rear section 4012.

[0075] The shape of the second quick connector matches the shape of the second socket 401, and a sealing ring is provided at the step of the second quick connector. After the second quick connector is inserted into the second socket 401, the sealing ring separates the front section 4011 and the rear section 4012, and the water inlet port is connected to the water inlet hole 221, so that the air inlet port is connected to the air inlet hole 211 to prevent leakage.

[0076] In some embodiments, reference Figure 13 and Figure 14 As shown, the connection assembly 200 is also provided with multiple third sealing rings 520, and multiple sealing grooves are provided on the outer wall of the third distribution seat 500. Each sealing groove is distributed at intervals along the circumference of the third distribution seat 500, and multiple sealing grooves are distributed at intervals along the front-to-back direction. Multiple third sealing rings 520 are respectively provided in multiple sealing grooves.

[0077] A conducting section 530 is provided between two adjacent sealing grooves. There are at least three conducting sections 530 . The air inlet 211 , the water inlet 221 and the rear end of the air return channel 230 are respectively provided in the three conducting sections 530 .

[0078] The third type of quick connector is provided with a sleeve, and the inner wall of the sleeve is provided with a return air port, a water supply port and an air supply port spaced apart in the front and back. The sleeve of the third type of quick connector is installed on the outside of the third distribution seat 500, and a plurality of conducting sections 530 separated from each other are formed between the inner wall of the sleeve and the plurality of third sealing rings 520.

[0079] The rear end of the return air channel 230, the water inlet 221 and the air inlet 211, which are spaced apart from each other, can be distributed in three different conduction sections 530. The return air port is connected to the rear end of the return air channel 230, the water supply port is connected to the water inlet 221, and the air supply port is connected to the air inlet 211 to avoid leakage.

[0080] In some embodiments, reference Figure 1 and Figure 2 As shown, the water inlet pipe 120 protrudes backward and is inserted into the front end of the water inlet channel 220 , and the air inlet pipe 110 protrudes backward and is inserted into the front end of the air inlet channel 210 .

[0081] The air inlet pipe 110 is inserted into the air inlet passage 210 , and the water inlet pipe 120 is inserted into the water inlet passage 220 , thereby improving the sealing effect.

[0082] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A pneumatic dental scaler, characterized in that: The invention comprises a driving assembly and a connecting assembly, wherein the rear end of the driving assembly is provided with an air inlet pipe, a water inlet pipe and an air return port, the interior of the connecting assembly is provided with an air inlet channel, a water inlet channel and an air return channel separated from each other, the air inlet pipe is connected to the front end of the air inlet channel, the water inlet pipe is connected to the front end of the water inlet channel, the air return port is connected to the air return channel, the rear end of the air inlet channel is provided with an air inlet hole, and the rear end of the water inlet channel is provided with a water inlet hole; The connecting assembly includes a first distribution seat, a first plug hole is provided at the rear end of the first distribution seat, a front end of the first plug hole is connected to the return air channel, and the air inlet and the water inlet are provided on the inner side wall of the first plug hole with a front-to-back spacing; And / or, the connecting assembly includes a second distribution seat and a second shell, the second distribution seat is arranged in the second shell, an air return groove is formed between the outer wall of the second distribution seat and the inner wall of the second shell, the air return groove is connected to the rear end of the air return channel, a second plug hole is provided at the rear end of the second distribution seat, and the water inlet hole and the air inlet hole are arranged on the inner wall of the second plug hole with a front-to-back interval; And / or, the connecting assembly includes a third distribution seat, and the rear end of the return air channel, the water inlet hole and the air inlet hole are arranged on the outer side wall of the third distribution seat at intervals in front and back.

2. The pneumatic dental scaler according to claim 1, wherein: A connecting ring is provided at the rear end of the driving assembly, and a connecting groove is provided at the front end of the connecting assembly. The connecting groove is circumferentially arranged, and the connecting ring is plugged into the connecting groove.

3. The pneumatic dental scaler according to claim 2, wherein: The connecting assembly further includes a first shell, the first distribution seat is disposed in the first shell, and the outer side wall of the front end of the first distribution seat and the inner side wall of the front end of the first shell form the connecting groove; And / or, the outer side wall of the front end of the second distribution seat and the inner side wall of the front end of the second shell form the connecting groove; And / or, the connection assembly further includes a third shell, the third distribution seat is arranged in the third shell, and the outer side wall of the front end of the third distribution seat and the inner side wall of the front end of the third shell form the connection groove.

4. The pneumatic dental scaler according to claim 3, characterized in that: A first convex ring is provided at the rear end of the first housing, and a front wall of the first convex ring abuts against the rear end of the first dispensing seat; And / or, the inner side wall of the second shell is provided with a second convex ring, the outer side wall of the second distribution seat is provided with a second protrusion, and the rear wall of the second protrusion abuts against the front wall of the second convex ring; And / or, the inner side wall of the third shell is provided with a third convex ring, the outer side wall of the third distribution seat is provided with a third protrusion, and the rear wall of the third protrusion abuts against the front wall of the third convex ring.

5. The pneumatic dental scaler according to claim 3, wherein: A first sealing ring is provided between the rear end of the inner side wall of the first shell and the rear end of the outer side wall of the first distribution seat.

6. The pneumatic dental scaler according to claim 2, wherein: The pneumatic tooth scaler also includes: The connecting sealing ring is arranged between the connecting ring and the connecting groove.

7. The pneumatic dental scaler according to claim 1, wherein: A plurality of sealing convex rings spaced apart from each other are provided on the inner side wall of the first insertion hole, a connecting groove is formed between every two sealing convex rings, and the air inlet and the water inlet are respectively provided in the two connecting grooves.

8. The pneumatic dental scaler according to claim 1, wherein: The second insertion hole includes a front section and a rear section arranged front to back, the diameter of the front section is smaller than the diameter of the rear section, the water inlet is provided in the front section, and the air inlet is provided in the rear section.

9. The pneumatic dental scaler according to claim 1, wherein: The connection component further includes: Multiple third sealing rings are arranged on the outer wall of the third distribution seat in sequence and at intervals along the front-to-back direction, a conducting section is provided between every two third sealing rings, and the rear end of the return air channel, the water inlet hole and the air inlet hole are respectively provided in the three conducting sections.

10. The pneumatic dental scaler according to claim 1, wherein: The air inlet pipe and the water inlet pipe protrude rearward, the air inlet pipe is inserted into the front end of the air inlet channel, and the water inlet pipe is inserted into the front end of the water inlet channel.

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