Dental cleaning appliance capable of relieving pressure

Abstract

The utility model discloses a pressure-relief tooth cleaning appliance, which comprises: a tooth cleaning appliance body, the outer wall of which is provided with a mounting hole communicated with the interior of the tooth cleaning appliance body; the pressure relief plug comprises a sealing section, a middle section and a limiting section which are connected in sequence, the sealing section is arranged in the mounting hole and seals the mounting hole, and the middle section penetrates through the mounting hole and is connected with the limiting section located in the tooth cleaning appliance body, so that the pressure relief plug is limited on the tooth cleaning appliance body; the pressure relief channel is formed between the mounting hole and the middle section and allows gas to pass through, and high-pressure gas generated in the tooth cleaning appliance body can be subjected to pressure relief through the pressure relief channel. The pressure relief plug is reasonable in structural design, can be stably mounted on the tooth cleaning appliance body, and ensures reliable implementation of a waterproof function and a pressure relief function.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of nursing equipment, in particular to a pressure-releasable dental cleaning appliance. BACKGROUND

[0002] The existing electric toothbrush / oral irrigator needs to be in a sealed state to achieve waterproof function. When the power module inside has an abnormality, the heat increases dramatically, causing the internal air pressure to be too large, which may even cause explosion, and there is a safety hazard. Therefore, a safety hole needs to be provided.

[0003] For example, the utility model discloses a safety hole structure of an electric toothbrush, which comprises a toothbrush head and a shell serving as a handle. The shell is sealed and internally provided with a motor module and a power module for driving the toothbrush head. The shell is provided with a safety hole communicating with the inside and outside. The safety hole is sealed and covered with an explosion-proof membrane that can be ruptured when the internal air pressure is too large. When the power module is abnormally overheated and causes the internal air pressure of the shell to be too large, the explosion-proof membrane is first ruptured by the gas due to its lower bearing capacity than the shell. The high-pressure gas is discharged from the safety hole, avoiding the danger of shell explosion under high pressure, and the safety performance is high. However, the pressure relief amount of the safety hole is limited, which cannot meet the safety requirements. UTILITY MODEL CONTENTS

[0004] The purpose of the present application is to provide a pressure-releasable dental cleaning appliance, which comprises:

[0005] A dental cleaning appliance body, an installation hole is formed in the outer wall of the dental cleaning appliance body and communicates with the inside of the dental cleaning appliance body;

[0006] A pressure relief plug, which comprises a sealing segment, an intermediate segment and a limiting segment connected in sequence. The sealing segment is arranged in the installation hole and seals the installation hole. The intermediate segment penetrates the installation hole and is connected with the limiting segment located in the dental cleaning appliance body, so as to limit the pressure relief plug on the dental cleaning appliance body.

[0007] A pressure relief channel is formed between the installation hole and the intermediate segment of the pressure relief plug and allows gas to pass through. The high-pressure gas generated in the dental cleaning appliance body can be relieved through the pressure relief channel.

[0008] The present application can timely relieve the high-pressure gas generated in the dental cleaning appliance body by providing the installation hole and the pressure relief plug on the dental cleaning appliance body, and the pressure relief channel formed between the installation hole and the intermediate segment of the pressure relief plug. The safety of use is improved, and damage to the appliance or harm to the user caused by excessive internal pressure can be avoided.

[0009] As an optional embodiment, the tooth cleaning appliance body further comprises a plurality of support bones, one end of the support bones is connected with the hole wall of the mounting hole, and the other end thereof extends to the same circle along the radial direction of the mounting hole to the center of the mounting hole to enclose an assembly hole, the intermediate section penetrates through the assembly hole, and the gaps between adjacent support bones form the pressure relief channel.

[0010] The present application encloses the assembly hole by the plurality of support bones, and the gaps between adjacent support bones form the pressure relief channel, which on one hand ensures the formation of the pressure relief channel, and on the other hand the support bones can support and position the pressure relief plug to improve the stability of the pressure relief plug.

[0011] As an optional embodiment, the mounting hole comprises a first hole section and a second hole section, the sealing section is arranged in the first hole section, and the mounting plate is arranged in the second hole section.

[0012] A portion of the plate body near the center of the mounting plate is provided with an assembly hole, the intermediate section penetrates through the assembly hole, and a plurality of through grooves are arranged on a portion of the plate body near the hole wall of the mounting hole, and the plurality of through grooves form the pressure relief channel.

[0013] The present application arranges the mounting plate in the mounting hole, and arranges the assembly hole and the through grooves on the mounting plate to form the pressure relief channel, so as to more accurately control the position and size of the pressure relief channel and ensure the stable implementation of the pressure relief function.

[0014] As an optional embodiment, the sealing section and the limiting section are both flat cylindrical structures, one side of the sealing section is pressed against the mounting plate, and the outer circumferential surface of the sealing section is sealingly connected with the hole wall of the first hole section; the outer diameter of the sealing section is greater than the outer diameter of the limiting section, and the outer diameter of the limiting section is greater than the outer diameter of the intermediate section.

[0015] One side of the sealing section of the present application is pressed against the mounting plate, and the outer circumferential surface thereof is sealingly connected with the hole wall of the first hole section to achieve the waterproof effect; meanwhile, the design of different outer diameters of the sealing section, the limiting section and the intermediate section facilitates the installation and positioning of the pressure relief plug and ensures the stability thereof during the working process.

[0016] As an optional embodiment, the sealing section is a flat cylindrical structure, the limiting section is a character-shaped structure, the limiting section is embedded in the end face of the intermediate section, and the two ends of the limiting section respectively extend from the opposite outer circumferential sides of the intermediate section to form limiting portions.

[0017] The limiting section of the present application is a character-shaped structure embedded in the end face of the intermediate section and extending from the two ends to form the limiting portions, which can effectively prevent the pressure relief plug from falling off from the tooth cleaning appliance body and ensure the continuous reliability of the pressure relief function.

[0018] As an optional embodiment, the outer diameter of the limiting section is smaller than the inner diameter of the mounting hole and larger than the inner diameter of the assembly hole. The outer diameter of the limiting section of the present application is smaller than the inner diameter of the mounting hole and larger than the inner diameter of the assembly hole, which can ensure the accuracy of the installation position of the pressure relief plug in the mounting hole and prevent excessive movement, thereby ensuring the normal operation of the pressure relief channel.

[0019] As an optional embodiment, the thickness of the intermediate section is greater than or equal to the thickness of the support bone. The thickness of the intermediate section of the present application is greater than or equal to the thickness of the support bone, which can ensure the strength and stability of the pressure relief plug during use and prevent the intermediate section from being easily damaged due to being too thin, thereby affecting the pressure relief function.

[0020] As an optional embodiment, the cross-sectional area of the pressure relief channel is greater than or equal to 1 mm 2 The cross-sectional area of the pressure relief channel of the present application is greater than or equal to 1 mm 2 , which can ensure that when pressure relief is needed, there is a large enough channel area for high-pressure gas to be quickly discharged, thereby improving the pressure relief efficiency and ensuring the safe use of the dental cleaning appliance.

[0021] As an optional embodiment, an annular sealing protrusion is arranged on the outer peripheral wall of the sealing section, and the sealing protrusion is in sealing connection with the inner wall of the mounting hole. The annular sealing protrusion arranged on the outer peripheral wall of the sealing section of the present application is in sealing connection with the inner wall of the mounting hole, which can further improve the sealing effect and ensure the waterproof effect of the dental cleaning appliance during normal use.

[0022] As an optional embodiment, the pressure relief plug is made of rubber or polypropylene material. The pressure relief plug of the present application is made of rubber or polypropylene material, which has good elasticity and sealing performance, can ensure the sealing performance and reliability of the pressure relief plug during operation, and also has certain durability.

[0023] The beneficial effects of the embodiments of the present application are as follows:

[0024] The structure of the pressure relief plug of the present application is reasonable, which can be stably installed on the body of the dental cleaning appliance and ensure the reliable implementation of the pressure relief function. The sealing section has a waterproof effect in a normal state and can timely relieve pressure in an abnormal state, and the cooperation of the limiting section and the intermediate section ensures the stable position of the pressure relief plug and prevents it from easily falling off or moving. In addition, the arrangement of the pressure relief channel ensures that the high-pressure gas can be smoothly discharged, thereby providing protection for the normal use of the dental cleaning appliance.

[0025] During use, if the dental cleaning appliance abnormally generates high-pressure gas, the high-pressure gas can be discharged in time through the pressure relief channel, thereby avoiding the risk of damaging the appliance or causing harm to the user due to excessive internal pressure, and improving the safety of the dental cleaning appliance. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Figure 1 is a schematic diagram of a tooth cleaning appliance according to an embodiment of the application;

[0027] Figure 2 Figure 2 is a schematic diagram of an exploded view of a tooth cleaning appliance according to an embodiment of the application;

[0028] Figure 3 Figure 3 is a schematic diagram of a tooth cleaning appliance and mounting hole according to an embodiment of the application;

[0029] Figure 4 Figure 4 is a schematic diagram of a mounting hole according to an embodiment of the application;

[0030] Figure 5 Figure 5 is a schematic diagram of a pressure relief plug according to an embodiment of the application;

[0031] Figure 6 Figure 6 is a cross-sectional view of a pressure relief plug according to an embodiment of the application;

[0032] Figure 7 Figure 7 is a schematic diagram of a tooth cleaning appliance and mounting hole according to another embodiment of the application;

[0033] Figure 8 Figure 8 is a schematic diagram of a mounting hole and pressure relief plug according to another embodiment of the application;

[0034] Figure 9 Figure 9 is a schematic diagram of a mounting hole according to another embodiment of the application;

[0035] Figure 10 Figure 10 is a schematic diagram of a pressure relief plug according to another embodiment of the application Figure 1 ;

[0036] Figure 11 Figure 11 is a schematic diagram of a pressure relief plug according to another embodiment of the application Figure 2 .

[0037] wherein,

[0038] 1 tooth cleaning appliance body; 2 mounting hole; 21 first hole section; 22 second hole section; 3 pressure relief plug; 31 sealing section; 311 sealing protrusion; 32 intermediate section; 33 limiting section; 331 limiting portion; 41 support rib; 42 assembly hole; 51 mounting plate; 52 through slot. DETAILED DESCRIPTION

[0039] Various aspects and features of the present application are described herein with reference to the accompanying drawings.

[0040] It is to be understood that various alterations and modifications can be made to the embodiments of the application herein. Accordingly, the above description should not be viewed as limiting but rather as exemplifying the embodiments of the application. Other modifications within the spirit and scope of the application will occur to those skilled in the art to which the application pertains.

[0041] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.

[0042] These and other features of this application will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0043] It should also be understood that although this application has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of this application.

[0044] The above and other aspects, features and advantages of this application will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0045] Specific embodiments of this application are described thereafter with reference to the accompanying drawings; however, it should be understood that the claimed embodiments are merely examples of this application, which can be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the application. Therefore, the specific structural and functional details claimed herein are not intended to be limiting, but merely serve as the basis and representative basis for the claims to teach those skilled in the art to use this application in a variety of substantially any suitable detailed structures.

[0046] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to this application.

[0047] An embodiment of this application provides a pressure-relief dental cleaning appliance, such as... Figures 3-5 As shown, it includes a dental cleaning appliance body 1, a pressure relief plug 3, and a pressure relief channel. The dental cleaning appliance body 1 has a mounting hole 2 on its outer wall that communicates with its interior. The dental cleaning appliance body 1 can be the handle of an electric toothbrush or a dental cleaning device.

[0048] The following explanation will use the handle of an electric toothbrush as an example to illustrate the process. Figures 1-2 As shown, the handle includes a handle portion and a bottom cover. One end of the handle portion is connected to the toothbrush head via a sealing ring. The handle portion contains a power supply component and a power component for driving the toothbrush head to rotate. The other end of the handle portion is fitted with the bottom cover via a sealing ring and a waterproof and breathable membrane. The mounting hole 2 can be located on the outer peripheral wall of the handle portion or on the end face of the bottom cover.

[0049] like Figures 5-6As shown, the pressure relief plug 3 comprises a sealing segment 31, an intermediate segment 32 and a limiting segment 33 connected in sequence, the sealing segment 31 is arranged in the mounting hole 2 and seals the mounting hole 2, the intermediate segment 32 penetrates the mounting hole 2 and is connected with the limiting segment 33 located in the dental implement body 1, so as to limit the pressure relief plug 3 on the dental implement body 1.

[0050] As shown, Figure 4 The pressure relief channel is formed between the mounting hole 2 and the intermediate segment 32 and allows gas to pass through, and the high-pressure gas generated in the dental implement body 1 can be relieved through the pressure relief channel.

[0051] In this embodiment, when the dental implement is used normally, the sealing segment 31 of the pressure relief plug 3 can effectively prevent external water from entering the inside of the dental implement through the close fit with the mounting hole 2, and ensure that the dental implement has good waterproof performance during normal use.

[0052] When the power assembly in the handle explodes to generate high pressure or non-normal state such as inputting 2070Kpa±10% gas pressure to the handle, the high-pressure gas in the dental implement body 1 can pass through the pressure relief channel formed between the mounting hole 2 and the intermediate segment 32 of the pressure relief plug 3, and the high-pressure gas pushes the sealing segment 31 outward, so that the sealing segment 31 opens the mounting hole 2, and the high-pressure gas passes through the gap between the pressure relief channel, the sealing segment 31 and the mounting hole 2 for timely pressure relief.

[0053] Therefore, by arranging the mounting hole 2 and the pressure relief plug 3 on the dental implement body 1, and the pressure relief channel formed between the mounting hole 2 and the intermediate segment 32 of the pressure relief plug 3, the high-pressure gas generated in the dental implement body 1 can be relieved in time, the safety of use is improved, and damage to the implement or harm to the user caused by excessive internal pressure can be avoided.

[0054] As an optional embodiment, as shown, Figure 4 The dental implement body 1 further comprises a plurality of support bones 41, one end of the support bone 41 is connected with the hole wall of the mounting hole 2, and the other end extends to the same circle along the radial direction of the mounting hole 2 to the center of the mounting hole 2 to form an assembly hole 42, the intermediate segment 32 penetrates the assembly hole 42, and the gap between adjacent support bones 41 forms the pressure relief channel.

[0055] Among them, the outer edge of the support bone 41 is similar to a few characters, and the end connected with the hole wall of the mounting hole 2 is an arc surface. Exemplarily, four support bones 41 can be arranged and distributed in a circle with the center of the mounting hole 2 as the center, and this distribution mode can more stably support the pressure relief plug 3, so that the position of the pressure relief plug 3 in the dental implement body 1 is more stable.

[0056] When the tooth cleaning device is in use, no matter in normal state or in the case of possible internal pressure changes, the four support bones 41 can provide strong support for the pressure relief plug 3 from different directions, thereby significantly improving the effect of supporting the pressure relief plug 3, ensuring that the pressure relief plug 3 can play a waterproof effect in the normal state and a pressure relief role in the abnormal state, switching between sealing and pressure relief functions according to the use state, and ensuring the safe and reliable operation of the tooth cleaning device.

[0057] In this embodiment, during the operation of the tooth cleaning device, if the internal pressure rises, the gas can pass through the gap (i.e. the pressure relief channel) between the adjacent support bones 41, and the gas will move the sealing section 31 outward, so that a gap is formed between the sealing section 31 and the mounting hole 2, so that the gas is discharged after passing through the pressure relief channel and the gap between the sealing section 31 and the mounting hole 2. The support bones 41 not only play a role in supporting and positioning the middle section 32 of the pressure relief plug 3, but also form a stable pressure relief channel structure.

[0058] Specifically, when high-pressure gas is generated in the tooth cleaning device, the gas pressure acts on the pressure relief plug 3. Due to the fact that the outer diameter of the limiting section 33 is smaller than the inner diameter of the mounting hole 2, the limiting section 33 moves outward under the push of the high-pressure gas. The limiting section 33 drives the middle section 32 to move along the assembly hole 42, and at this time the sealing section 31 also moves outward. As the sealing section 31 moves outward, the sealing section 31 will deform under the action of the high-pressure gas, and the deformation causes a gap to be formed between the sealing section 31 and the mounting hole 2, i.e. the mounting hole 2 is in an open state, so that the gas is discharged after passing through the pressure relief channel between the adjacent support bones 41 and then passing through the gap between the sealing section 31 and the mounting hole 2, thereby achieving pressure relief and avoiding damage to the tooth cleaning device due to internal high pressure or causing danger to the user.

[0059] As an optional embodiment, as shown in Figures 7-9 The mounting hole 2 includes a first hole section 21 and a second hole section 22, the sealing section 31 is arranged in the first hole section 21, and a mounting plate 51 is arranged in the second hole section 22. The structure of the mounting plate 51 matches the structure of the mounting hole 2. For example, in this embodiment, the mounting hole 2 is a circular hole, and the mounting plate 51 is a circular plate. The outer periphery of the mounting plate 51 is in sealing connection with the hole wall of the mounting hole 2.

[0060] An assembly hole 42 is formed in the part of the mounting plate 51 close to the center, the middle section 32 passes through the assembly hole 42, and a plurality of through grooves 52 are formed in the part of the mounting plate 51 close to the hole wall of the mounting hole 2, and the plurality of through grooves 52 form the pressure relief channel. The inner diameter of the first hole section 21 is the same as the inner diameter of the second hole section 22, and the inner diameter of the first hole section 21 is greater than the inner diameter of the assembly hole 42.

[0061] In the present embodiment, when the pressure inside the dental implement body 1 rises, the gas is discharged from the inside of the dental implement body 1 through the through slot 52 (pressure relief passage) on the mounting plate 51. The different hole sections of the mounting hole 2 and the structure of the mounting plate 51 provide specific space and structure for the installation of the pressure relief plug 3 and the formation of the pressure relief passage.

[0062] Specifically, when high-pressure gas appears inside the dental implement, the high-pressure gas exerts force on the pressure relief plug 3. The limiting section 33 moves outward under the gas pressure, and in turn drives the middle section 32 to move. The sealing section 31 also moves outward and deforms under the pressure.

[0063] When the sealing section 31 moves and deforms, the deformation causes a gap to be formed between the sealing section 31 and the mounting hole 2, i.e., the mounting hole 2 is in an open state, so that the gas is discharged through the gap between the sealing section 31 and the mounting hole 2 after passing through the through slot 52 (pressure relief passage) on the mounting plate 51, thereby achieving pressure relief of the high-pressure gas inside the dental implement and ensuring safe use of the dental implement.

[0064] As an optional embodiment, as shown in Figure 5 and Figure 8 , the sealing section 31 and the limiting section 33 are both flat cylindrical structures, one side of the sealing section 31 abuts against the mounting plate 51, and the outer peripheral surface of the sealing section 31 is in sealing connection with the hole wall of the first hole section 21; the outer diameter of the sealing section 31 is greater than the outer diameter of the limiting section 33, and the outer diameter of the limiting section 33 is greater than the outer diameter of the middle section 32.

[0065] In the present embodiment, during normal use of the dental implement, the sealing section 31 abuts against the mounting plate 51, and the outer peripheral surface thereof is in sealing connection with the hole wall of the first hole section 21, thereby achieving sealing of the mounting hole 2 to achieve a waterproof effect.

[0066] When the internal pressure rises and pressure relief is needed, the gas pushes the sealing section 31 to move and even deform, so that a gap is generated between the sealing section 31 and the mounting hole 2, the gas enters this gap through the pressure relief passage, and is discharged through this gap.

[0067] As an optional embodiment, as shown in Figures 10-11 , the sealing section 31 is a flat cylindrical structure, the limiting section 33 is a character-shaped structure, the limiting section 33 is embedded on the end face of the middle section 32, and the two ends of the limiting section 33 respectively extend from the opposite outer peripheral sides of the middle section 32 to form limiting portions 331.

[0068] In the present embodiment, during normal use of the dental implement, the sealing section 31 ensures sealing of the mounting hole 2, and the character-shaped structure of the limiting section 33 and the limiting portions 331 prevent the pressure relief plug 3 from falling off from the dental implement body 1.

[0069] As an optional embodiment, as shown in Figure 8 The outer diameter of the limiting section 33 is smaller than the inner diameter of the mounting hole 2 and larger than the inner diameter of the assembly hole 42. The outer diameter of the limiting section 33 in the present application is smaller than the inner diameter of the mounting hole 2 and larger than the inner diameter of the assembly hole 42, which can ensure the accurate installation position of the pressure relief plug 3 in the mounting hole 2 and prevent excessive movement of the pressure relief plug 3, thereby ensuring the normal operation of the pressure relief channel.

[0070] In the present embodiment, such a size design enables the pressure relief plug 3 to be smoothly installed in the mounting hole 2 during the installation and use of the dental cleaning appliance, while the limiting section 33 plays a limiting role at the assembly hole 42 to prevent excessive movement of the pressure relief plug 3, thereby ensuring the normal operation of the pressure relief channel.

[0071] As an optional embodiment, as shown in Figure 8 The thickness of the intermediate section 32 is greater than or equal to the thickness of the support bone 41, wherein the thickness refers to the length of the intermediate section 32 in the axial direction of the mounting hole 2.

[0072] In the present embodiment, when high-pressure gas occurs in the dental cleaning appliance, the high-pressure gas acts on the limiting section 33, which drives the intermediate section 32 to move along the assembly hole 42, and the sealing section 31 also moves and deforms under the action of the high-pressure gas to achieve pressure relief. At this time, the thickness of the intermediate section 32 being greater than or equal to the thickness of the support bone 41 ensures the strength and stability of the intermediate section 32 during movement. Under the push of the high-pressure gas, the intermediate section 32 needs to withstand a certain pressure and friction force. If the thickness of the intermediate section 32 is too small, it may be deformed or even damaged during movement, affecting the normal operation of the pressure relief plug 3. When the thickness of the intermediate section 32 is not less than the thickness of the support bone 41, it can better resist the pressure brought by the high-pressure gas and ensure that it will not be easily deformed or damaged during pressure relief, thereby ensuring the stable implementation of the pressure relief function.

[0073] On the other hand, it helps to maintain the reliability of the entire pressure relief structure. Since the intermediate section 32 connects the sealing section 31 and the limiting section 33, its stability is directly related to the positioning and sealing effect of the pressure relief plug 3 on the dental cleaning appliance body 1. If the thickness of the intermediate section 32 is insufficient, it may cause the overall structure of the pressure relief plug 3 to be unstable, the sealing section 31 cannot effectively seal the mounting hole 2, and the limiting section 33 may not play a good limiting role. A thicker intermediate section 32 can better cooperate with the support bone 41, making the installation of the pressure relief plug 3 on the dental cleaning appliance body 1 more secure and improving the reliability of the entire pressure relief structure, thereby better protecting the safe use of the dental cleaning appliance during gas pressure relief.

[0074] As an optional embodiment, the cross-sectional area of the pressure relief channel is greater than or equal to 1 mm 2, can ensure that when the pressure relief is needed, there is a large enough passage area for the high-pressure gas to be quickly discharged, improving the efficiency of pressure relief and ensuring the safe use of the dental appliance.

[0075] As an optional embodiment, as shown in Figure 5 and Figure 10 The outer peripheral wall of the sealing section 31 is provided with an annular sealing protrusion 311, which is in sealing connection with the inner wall of the mounting hole 2.

[0076] In this embodiment, when the dental appliance is in normal use, the sealing protrusion 311 closely adheres to the inner wall of the mounting hole 2, improving the sealing effect and preventing external water from entering the dental appliance body 1. When pressure relief is needed, the internal pressure overcomes the friction between the sealing protrusion 311 and the inner wall of the mounting hole 2, forming a gap between the sealing protrusion 311 and the mounting hole 2, allowing the gas to be discharged through the pressure relief passage, the gap between the sealing protrusion 311 and the mounting hole 2.

[0077] As an optional embodiment, the pressure relief plug 3 is made of rubber or polypropylene material. The pressure relief plug 3 of the present application is made of rubber or polypropylene material, which has good elasticity and sealing performance, can ensure the sealing performance and reliability of the pressure relief plug 3 during operation, and also has certain durability.

[0078] In this embodiment, when the dental appliance is in normal use, the pressure relief plug 3 can be tightly installed in the mounting hole 2 to ensure the sealing performance. When the internal pressure of the dental appliance body 1 rises, the elasticity of the material allows the pressure relief plug 3 to deform to some extent, providing a passage for the gas to be discharged, and then returning to its original state after the pressure decreases, continuing to maintain the sealing.

[0079] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements shall also be considered to fall within the protection scope of the present application.

Claims

1. A pressure-relievable dental implement, characterized by, The utility model provides a tooth cleaning device body (1) and a pressure relief plug (3) and a pressure relief channel, the pressure relief plug (3) is arranged in the tooth cleaning device body (1) and is connected with the pressure relief channel, the pressure relief channel is formed between the installation hole (2) and the middle section (32) and allows gas to pass through, and the high-pressure gas generated in the tooth cleaning device body (1) can be relieved through the pressure relief channel. The tooth cleaning device body (1) further comprises a plurality of support bones (41), one end of the support bones (41) is connected with the hole wall of the installation hole (2), and the other end thereof extends to the same circle along the radial direction of the installation hole (2) to the center of the installation hole (2) to enclose an assembly hole (42), the middle section (32) penetrates through the assembly hole (42), and the gaps between adjacent support bones (41) form the pressure relief channel respectively. The installation hole (2) comprises a first hole section (21) and a second hole section (22), the sealing section (31) is arranged in the first hole section (21), and the installation plate (51) is arranged in the second hole section (22). The installation plate (51) is arranged with the assembly hole (42) on the part of the plate body close to the center thereof, the middle section (32) penetrates through the assembly hole (42), a plurality of through grooves (52) are arranged on the part of the plate body of the installation plate (51) close to the hole wall of the installation hole (2), and the plurality of through grooves (52) form the pressure relief channel.

2. The pressure-relievable dental implement of claim 1, wherein, The sealing section (31) and the limiting section (33) are both flat cylindrical structures, one side of the sealing section (31) is pressed against the installation plate (51), the outer peripheral surface of the sealing section (31) is sealingly connected with the hole wall of the first hole section (21), the outer diameter of the sealing section (31) is greater than the outer diameter of the limiting section (33), and the outer diameter of the limiting section (33) is greater than the outer diameter of the middle section (32).

3. The pressure-relievable dental implement of claim 1, wherein, The sealing section (31) is a flat cylindrical structure, the limiting section (33) is a one-letter-shaped structure, the limiting section (33) is embedded on the end face of the middle section (32), and the two ends of the limiting section (33) respectively extend out from the opposite outer peripheral sides of the middle section (32) to form limiting portions (331). The outer diameter of the limiting section (33) is less than the inner diameter of the installation hole (2), and the outer diameter of the limiting section (33) is greater than the inner diameter of the assembly hole (42).

4. The pressure-relievable dental implement of claim 3, wherein, The thickness of the middle section (32) is greater than or equal to the thickness of the support bone (41).

5. The pressure-relievable dental implement of claim 1, wherein, The outer peripheral wall of the sealing section (31) is provided with an annular sealing protrusion (311), and the sealing protrusion (311) is sealingly connected with the inner wall of the installation hole (2).

6. The pressure-relievable dental implement of claim 2 or 3, wherein, The pressure relief plug (3) is made of rubber or polypropylene material.

7. The pressure-relievable dental implement of claim 2, wherein ​ 8. The pressure-relievable dental implement of claim 1, wherein, The cross-sectional area of the pressure relief channel is ≥ 1 mm 2 .

9. The pressure-relievable dental implement of claim 1, wherein, ​ 10. The pressure-relievable dental implement of claim 1 wherein, ​

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