A sealing structure assembly for dental handpieces

Abstract

This utility model discloses a sealing structure assembly for dental handpieces, comprising: an mounting component and a sealing component. The mounting component has an adapter portion on its inner side, and the adapter portion has a mounting groove. The sealing component is fitted into the mounting groove. The adapter portion covers the majority of the sealing component, exposing only a small portion of its contact surface. This utility model provides a sealing structure assembly for dental handpieces. By combining the mounting component and the sealing component separately, and cleaning them separately, accuracy is better ensured, and secondary damage is reduced. The sealing component is easily replaced through the mounting groove, reducing periodic replacement and maintenance costs, minimizing cross-infection, and improving the durability of the mounting component. The adapter portion covering most of the sealing component reduces damage to it. The addition of a protrusion increases the volume, weight, and rigidity of the mounting component.

Description

Technical Field

[0001] This utility model relates to the field of medical device application technology, and in particular to a sealing structure component for dental handpieces. Background Technology

[0002] Dental handpieces are used inside the oral cavity and are constantly exposed to contaminants such as moisture, blood, and bacteria. After use, they require cleaning and disinfection, but are still susceptible to moisture and impurities. To protect critical components such as gears, springs, and bearings from contamination and corrosion, the handpiece head must be strictly sealed. While existing dental handpiece heads undergo sealing treatment, contamination and corrosion can still occur internally over prolonged use.

[0003] Research has shown that the service life of the sealing structure components in the machine head greatly affects the sealing inside the machine head;

[0004] The existing metal parts and seals (gaskets) are integrated, and the gaskets cannot be replaced unless the entire unit is replaced. The gaskets have a relatively large contact surface (see reference). Figure 6 Repeated disinfection during use can easily lead to aging, failing to achieve the desired long-term sealing effect. Replacement is too costly, and the more parts exposed to the outside, the greater the damage.

[0005] Metal parts have a small overall volume, a large sealing groove, and poor rigidity. During use, they are easily damaged by impacts, resulting in sealing failure.

[0006] During the secondary processing of hardware and seals, undetectable damage can easily occur, resulting in a short service life for the finished products.

[0007] To address these issues, we propose a sealing structure assembly for dental handpieces. Utility Model Content

[0008] This invention addresses the aforementioned problems by providing a sealing structure assembly for dental handpieces.

[0009] The objective of this utility model can be achieved through the following technical solutions:

[0010] A sealing structure assembly for a dental handpiece includes:

[0011] The mounting component and the sealing component are provided with an adapter on the inner side of the mounting component and an installation groove. The sealing component is fitted into the installation groove. The adapter covers the bulk of the sealing component, exposing a small portion of the contact surface of the sealing component.

[0012] Furthermore, the mounting component is ring-shaped, and the adapter is integrally connected to the main body of the mounting component.

[0013] Furthermore, the mounting groove causes the adapter to have a first limiting end and a second limiting end, with the first limiting end located below the mounting member.

[0014] Furthermore, the first limiting end and the main body of the mounting component have a height difference, forming a corner surface.

[0015] Furthermore, the outer periphery of the mounting body is provided with a protrusion that extends upward along the outer periphery of the mounting body.

[0016] Furthermore, the cross-section between the protrusion and the first limiting end is stepped.

[0017] Furthermore, the mounting component is a metal component, and the sealing component is a gasket or a washer.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides a sealing structure assembly for dental handpieces. By combining the mounting component and the seal separately, and cleaning them separately, accuracy can be better guaranteed and secondary damage reduced. The seal is installed through the mounting groove, making it easy to replace and reducing periodic replacement and maintenance costs. This also reduces the risk of cross-infection and improves the durability of the mounting component. By having the adapter cover most of the seal's main body, damage to the seal is reduced. The addition of a protrusion increases the volume, weight, and rigidity of the mounting component. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 This is one of the overall structural schematic diagrams of this utility model.

[0022] Figure 2 This is the second schematic diagram of the overall structure of this utility model.

[0023] Figure 3 This is one of the schematic diagrams illustrating the application of the sealing structure component of this utility model.

[0024] Figure 4 This is the second schematic diagram of the application of the sealing structure component of this utility model.

[0025] Figure 5 This is the third schematic diagram of the application of the sealing structure component of this utility model.

[0026] Figure 6 This is a structural schematic diagram of the comparative product in the background art of this utility model.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] according to Figures 1-6 As shown:

[0030] A sealing structure assembly for a dental handpiece includes: a mounting part 1 and a seal 2 adapted to the mounting part 1. The seal 2 is located in the inner ring of the mounting part 1 and is connected to each other to form a sealing structure assembly. The structure assembly is mostly located in the head of the dental handpiece. The seal 2 contacts the needle clamping assembly 93 in the head and fits against the outer periphery of the needle clamping assembly 93 to prevent water and waste from entering the head.

[0031] Mounting component 1 is annular, and mounting component 1 has a mounting groove 3 that adapts to the sealing component 2, so that the sealing component 2 is fitted and installed in the inner ring of the mounting component 1 body.

[0032] refer to Figures 1-2 ,

[0033] An adapter 11 extends from the inner side of the mounting part 1. A mounting groove 3 is located inside the adapter 11, and the opening of the mounting groove 3 faces the axis of the mounting part 1. The seal 2 is installed inside the mounting groove 3. The adapter 11 here is integrally connected with the mounting part body 13.

[0034] In this structure, the mounting groove 3 forms a first limiting end 111 and a second limiting end 112 in the adapter part 11. In the figure, the first limiting end 111 is located below the main body 13 of the mounting member, while the second limiting end 112 is located above the first limiting end 111. The depth of the mounting groove 3 in the adapter part 11 is such that the first limiting end 111 covers three-quarters or four-fifths of the main body of the sealing member 2, that is, the cross-sectional length of the first limiting end 111 covers 70%-90% of the cross-sectional length of the main body of the sealing member 2. The first limiting end 111 and the clamping needle assembly 93 form a fine gap interval 100. The remaining exposed part of the sealing member 2 bears the impact of waste or wastewater in the gap interval 100. The first limiting end 111 shares most of the external force impact of the sealing member 2, reducing the impact on the sealing member 2 and increasing the service life of the sealing member 2.

[0035] In this structure, in order to enhance the tightness between the sealing structure assembly and various structures inside the machine head, it is known that the sealing member 2 is used to seal the clamping needle assembly 93 on the inner side of the mounting member 1, while on the outer side, the thickness of the adapter 11 is increased. As shown in the figure, the adapter 11 and the mounting member body 13 form a corner surface 200. In particular, the corner surface 200 is a right angle surface. Specifically, the first limiting end 111 and the mounting member body 13 form a height difference. When the surface with the height difference is attached to the outer wall surface of the through hole 95 in the machine head, it can restrict the waste material from entering the machine head. At the same time, it can increase the rigidity of the sealing structure assembly.

[0036] With further improvements to the above structure, a protrusion 14 is provided on the outer periphery of the mounting body 13. The protrusion 14 extends upward along the outer periphery of the mounting body 13. In this structure, the cross section between the protrusion 14 and the first limiting end 111 is stepped. The protrusion 14 fits against the inner wall of the machine head, further increasing the contact area between the mounting body 13 and the inner wall of the machine head, and increasing the tightness. Secondly, the top of the protrusion 14 contacts and presses against the clamping needle assembly 93. The stepped mounting part 1 limits other components, improving the tightness and structural compactness, so that the stability and tightness of the machine head are better guaranteed under the impact of wastewater and waste materials.

[0037] refer to Figure 6 Compared to existing products that rely on seal 2 to block most of the water flow or waste, without considering secondary damage, repeated cleaning of this type of sealing component will cause the sealing ring to age, or cause minor damage to seal 2 during the cleaning process. Human-caused damage is difficult to detect, and the reuse of installation component 1 is more troublesome. Moreover, the sealing structure component cannot replace seal 2, and even if it can be replaced, the replacement is more difficult and can easily cause direct damage to seal 2 during the replacement process.

[0038] Specifically, this structure increases the service life of the seal 2. Secondly, in the current product, the seal 2 and the mounting part 1 are installed by the mounting part 1 biting the seal 2, while in this structure, the seal 2 is clamped by the mounting groove 3. Under normal conditions, equipment with a certain degree of precision can replace the seal 2 two or more times. Since the adapter part 11 shares most of the pressure of the seal 2, it can directly increase the service life of the seal 2.

[0039] It should be noted that in dental handpieces, the mounting component 1 is preferably a metal ring, while the sealing component 2 is more often a gasket or washer, which is made of plastic.

[0040] The aforementioned sealing structure components are applied in dental handpieces, according to Figures 3-5 Specifically,

[0041] A dental handpiece includes a handpiece body, which includes a handle and a head 91 connected to the handle. The head 91 has a mounting cavity 92, a needle clamping assembly 93 installed in the mounting cavity 92, and a sealing structure assembly as described above. The mounting cavity 92 has an outwardly opening through hole 95, which is adapted to the needle clamping assembly 93. The needle clamping assembly 93 contains a bur. The inner ring of the sealing structure assembly fits against the needle clamping assembly 93, and the outer periphery is locked in the through hole 95 and fits against the inner wall of the head 91.

[0042] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sealing structure assembly for a dental handpiece, characterized in that, include: The mounting component and the sealing component are provided with an adapter on the inner side of the mounting component and an installation groove. The sealing component is fitted into the installation groove. The adapter covers the bulk of the sealing component, exposing a small portion of the contact surface of the sealing component.

2. A sealing structure assembly for a dental handpiece according to claim 1, characterized in that: The mounting component is ring-shaped, and the adapter is integrally connected to the main body of the mounting component.

3. A sealing structure assembly for a dental handpiece according to claim 2, characterized in that: The mounting groove forms a first limiting end and a second limiting end on the adapter, with the first limiting end located below the mounting component.

4. A sealing structure assembly for a dental handpiece according to claim 3, characterized in that: The first limiting end and the main body of the mounting component have a height difference, forming a corner surface.

5. A sealing structure assembly for a dental handpiece according to claim 4, characterized in that: The outer periphery of the mounting component body is also provided with a protrusion, which extends upward along the outer periphery of the mounting component body.

6. A sealing structure assembly for a dental handpiece according to claim 5, characterized in that: The cross section between the protrusion and the first limiting end is stepped.

7. A sealing structure assembly for a dental handpiece according to claim 1, characterized in that: The mounting component is a metal part, and the sealing component is a gasket or a pad.

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