Secondary waterproof structure of tooth whitening device

Abstract

The utility model discloses a tooth holder and host computer are designed as sealed connection, avoid the user after using perfect tooth appearance to wash with water, and moisture enters the host computer inside from the connecting place of tooth holder and host computer, simultaneously, the utility model discloses a double -layer waterproof structure, namely the cooperation ultrasonic welding of the annular projection of host computer upper shell and the welding plane of lower shell makes the sealed connection of host computer upper shell and lower shell to form the first waterproof, when the upper shell and lower shell are pasted, the annular groove of upper shell pasting end and the annular muscle strip between lower shell pasting end form U -shaped cavity, be equipped with waterproof silica gel ring in this cavity, and the waterproof silica gel ring and the cavity interference fit, thereby make upper shell and lower shell further sealed connection, form the second waterproof, the secondary waterproof structure of the utility model can effectively solve the problem of not taking down the tooth holder under the condition of host computer waterproof not strict, make the excellent waterproof performance of beautiful tooth appearance complete machine, the user is convenient after using and is free to flush and wash, increase the service life of beautiful tooth appearance.

Description

Technical Field

[0001] This utility model relates to the field of teeth whitening device technology, and more specifically, to a secondary waterproof structure for a teeth whitening device. Background Technology

[0002] Teeth whitening devices, designed for teeth whitening, have gained significant attention in the personal oral care field in recent years. Their core principle is to use specific technology to induce changes in pigmentation on the surface and deeper layers of teeth, thereby achieving a whitening effect.

[0003] Most teeth whitening devices on the market use a separate design for the tray and the main unit. Users can directly remove the tray for cleaning after use, and the main unit is generally not waterproof. While this design solves the waterproofing problem to some extent, with increased use over time and frequency, the fit between the tray and the main unit can become structurally fatigued and loose. Over time, this may cause the tray to loosen and fall off, reducing the lifespan of the teeth whitening device.

[0004] Similar sealing problems exist in other products as well as in the field of waterproof sealing technology. Existing technical solutions can be found in Chinese utility model patent CN215955399U, which discloses a shell structure and a battery. The shell structure includes a first shell and a second shell. An annular boss is formed on the mating side of the first shell, and an annular groove corresponding to the annular boss is formed on the mating side of the second shell. Inside the annular groove, from the bottom to the surface, a filling space, a sealing ring mounting space, and an embedding space are formed sequentially. The filling space is pre-filled with sealant, and a sealing ring is installed in the sealing ring mounting space. The annular boss is fitted into the embedding space, and the inner wall of the annular groove has several overflow channels that allow some of the sealant in the filling space to pass through the sealing ring and overflow into the mating gap between the sealing ring and the annular boss. This solution, by combining the sealing ring and sealant and utilizing the overflow channels to fill the gaps, improves the waterproof sealing performance to a certain extent. However, in practice, uneven glue application and air bubbles within the glue result in poor sealing. Furthermore, the usage scenarios for teeth whitening devices differ significantly from those for batteries. Teeth whitening devices need to be inserted directly into the mouth and require frequent rinsing after use, placing far more stringent demands on waterproofing than those for ordinary batteries. Simultaneously, the compact overall structure of teeth whitening devices, with its precise internal components, makes the traditional battery casing's reliance on sealant and sealing rings with overflow channels unsuitable for the miniaturized design of teeth whitening devices due to its larger size and complex assembly. More importantly, existing teeth whitening devices fail to effectively adopt this multi-layered sealing approach in their waterproofing design. This results in unreliable waterproofing even when using a non-removable structure between the mouthpiece and the main unit to prevent loosening, failing to meet the core user need for direct rinsing. Therefore, a dedicated secondary waterproofing structure is urgently needed to address the specific usage scenarios and structural characteristics of teeth whitening devices. Utility Model Content

[0005] This utility model provides a secondary waterproof structure for a teeth whitening device. The aim is to provide a multi-layer composite seal secondary waterproof structure, which allows users to freely rinse and clean the teeth whitening device without removing the tray after use. This solves the problem of poor assembly between the tray and the main unit caused by increased frequency and long-term use of traditional teeth whitening devices, thereby increasing the service life of the teeth whitening device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a secondary waterproof structure for a teeth whitening device, the teeth whitening device including a dental tray and a main unit, the dental tray and the main unit being sealed together, the main unit including an upper shell and a lower shell, the upper shell and the lower shell being disposed opposite to each other, the upper shell having an annular groove at its fitting end, the lower shell having an annular rib at its fitting end that cooperates with the annular groove, when the upper shell and the lower shell are fitted together, the annular rib being located within the annular groove, a U-shaped cavity being formed between the annular groove and the annular rib, a sealing element being provided within the cavity, the sealing element being interference-fitted with the cavity, the upper shell and the lower shell being fixedly connected by an ultrasonic welding process.

[0007] Furthermore, the sealing element is selected as a waterproof silicone ring, and the cross-section of the waterproof silicone ring is U-shaped.

[0008] Furthermore, the upper shell has an annular protrusion at its fitting end, and the lower shell has a welding surface that mates with the annular protrusion at its fitting end. During ultrasonic welding of the upper shell and the lower shell, the annular protrusion and the welding surface abut against each other.

[0009] Furthermore, the sidewall of the waterproof silicone ring is provided with sealing ribs, which can abut against the annular groove.

[0010] Furthermore, the cross-section of the sealing rib is arc-shaped.

[0011] Furthermore, the upper shell is provided with a number of positioning posts, and the lower shell is provided with a number of positioning holes, with the positioning posts inserted into the positioning holes.

[0012] Furthermore, the main body is provided with a cavity for accommodating the element.

[0013] Furthermore, the lower shell has a card interface, through which the dental tray is connected to the main unit.

[0014] Furthermore, the cross-section of the annular rib is rectangular.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model designs the dental tray and the main unit with a sealed connection, preventing water from entering the main unit from the connection point after the user washes the device with water. Simultaneously, this utility model uses a double-layer waterproof structure: the annular protrusion on the upper shell of the main unit and the welding plane of the lower shell are ultrasonically welded together, sealing the upper and lower shells and forming the first layer of waterproofing. When the upper and lower shells are fitted together, a U-shaped cavity is formed between the annular groove at the fitting end of the upper shell and the annular rib at the fitting end of the lower shell. A waterproof silicone ring is installed in this cavity, and the silicone ring and the cavity are interference-fitted, further sealing the upper and lower shells and forming the second layer of waterproofing. This secondary waterproofing structure effectively solves the problem of inadequate waterproofing of the main unit when the dental tray is not removed, giving the entire teeth whitening device excellent waterproof performance. This allows users to freely rinse and clean the device after use, increasing its lifespan. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is an exploded view of the present invention;

[0019] Figure 3 This is a schematic diagram of the upper shell of this utility model;

[0020] Figure 4 This is a schematic diagram of the lower shell of this utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram of the present invention;

[0022] Figure 6 This is a cross-sectional schematic diagram of the present invention with the sealing element installed;

[0023] Figure 7 yes Figure 6 A magnified view of part A in the diagram.

[0024] Explanation of main component symbols

[0025] 100. Dental tray; 101. Dental tray assembly; 102. Dental tray waterproof ring; 103. Dental tray retainer;

[0026] 200. Main unit; 210. Upper shell; 211. Annular groove; 212. Annular protrusion; 213. Positioning post; 220. Lower shell; 221. Annular rib; 222. Welding plane; 223. Positioning hole; 224. Snap-fit ​​interface; 230. Cavity; 240. Seal; 241. Waterproof silicone ring; 242. Sealing rib; 250. Cavity. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] Example

[0031] like Figures 1-7As shown, this utility model discloses a secondary waterproof structure for a teeth whitening device. The teeth whitening device includes a dental tray and a main unit, which are sealed together. The main unit includes an upper shell and a lower shell, which are arranged opposite to each other. The upper shell has an annular groove at its fitting end, and the lower shell has an annular rib that mates with the annular groove at its fitting end. When the upper shell and the lower shell are fitted together, the annular rib is located within the annular groove, forming a U-shaped cavity between the annular groove and the annular rib. A sealing element is provided within the cavity, and the sealing element is interference-fitted with the cavity. The upper shell has an annular protrusion at its fitting end, and the lower shell has a welding surface that mates with the annular protrusion at its fitting end. When the upper shell and the lower shell are ultrasonically welded, the annular protrusion and the welding surface abut against each other, and the upper shell and the lower shell are fixedly connected by an ultrasonic welding process.

[0032] This invention features a sealed connection between the dental tray and the main unit, preventing water from entering the main unit through the connection point after use when the user washes it with water. Furthermore, the invention employs a double-layer waterproof structure: the annular protrusion on the upper shell and the welding plane on the lower shell are ultrasonically welded together, creating a first layer of waterproofing. When the upper and lower shells are fitted together, a U-shaped cavity is formed between the annular groove on the upper shell and the annular rib on the lower shell, accommodating a sealing element. This sealing element and cavity are press-fitted, further sealing the upper and lower shells and creating a second layer of waterproofing. This secondary waterproofing structure effectively solves the problem of inadequate waterproofing when the dental tray is not removed, giving the entire device excellent waterproof performance. This allows users to easily rinse and clean the device after use, increasing its lifespan.

[0033] The above-mentioned sealing component is a waterproof silicone ring. The silicone material of the sealing component is elastic, which not only ensures the sealing performance but also facilitates interference fit installation. The cross-section of the waterproof silicone ring is U-shaped, which is suitable for U-shaped cavities.

[0034] The aforementioned waterproof silicone ring has a sealing rib on each of its inner and outer side walls. The sealing rib has an arc-shaped cross-section and can abut against the annular groove. Before the upper and lower shells are attached, the waterproof silicone ring is first installed on the annular rib of the lower shell. Then, the upper shell is pressed onto the lower shell. During the pressing process, the side walls of the waterproof silicone ring are loosely fitted with the annular groove, and the sealing rib on the side wall of the waterproof silicone ring is interference-fitted with the annular groove. The annular groove of the upper shell abuts and presses against the sealing rib on the side wall of the waterproof silicone ring. The arc-shaped sealing rib facilitates the assembly of the upper and lower shells and avoids a large contact area between the annular groove and the waterproof silicone ring during the pressing process, which would require greater force and precision during installation. At the same time, it also ensures the sealing effect of the waterproof silicone ring.

[0035] The upper shell is provided with several positioning posts, and the lower shell is provided with several positioning holes. The positioning posts are inserted into the positioning holes, which facilitates the assembly of the upper and lower shells.

[0036] The main body is provided with a cavity to accommodate the components, which facilitates the installation of the components.

[0037] The lower shell has a card interface, and the dental tray includes a dental tray assembly, a dental tray waterproof ring, and a dental tray retaining ring. The dental tray assembly is sealed to the main unit through the dental tray waterproof ring, dental tray retaining ring, and card interface.

[0038] The aforementioned annular rib has a rectangular cross-section, which is compatible with U-shaped waterproof silicone rings. The structure is simple, practical, and easy to manufacture.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A secondary waterproof structure for a teeth whitening device, the teeth whitening device comprising a dental tray and a main unit, the dental tray and the main unit being sealed together, characterized in that, The main unit includes an upper shell and a lower shell, which are disposed opposite to each other. The upper shell has an annular groove at its fitting end, and the lower shell has an annular rib at its fitting end that mates with the annular groove. When the upper shell and the lower shell are fitted together, the annular rib is located within the annular groove, and a U-shaped cavity is formed between the annular groove and the annular rib. A sealing element is provided within the cavity, and the sealing element is interference-fitted with the cavity. The upper shell and the lower shell are fixedly connected by an ultrasonic welding process.

2. The secondary waterproof structure of the teeth whitening device according to claim 1, characterized in that; The sealing element is a waterproof silicone ring, and the cross-section of the waterproof silicone ring is U-shaped.

3. The secondary waterproof structure of a teeth whitening device according to claim 1, characterized in that; The upper shell has an annular protrusion at its fitting end, and the lower shell has a welding surface that mates with the annular protrusion at its fitting end. When the upper shell and the lower shell are ultrasonically welded, the annular protrusion and the welding surface abut against each other.

4. The secondary waterproof structure of a teeth whitening device according to claim 2, characterized in that; The waterproof silicone ring has sealing ribs on its sidewalls, and the sealing ribs can abut against the annular groove.

5. The secondary waterproof structure of a teeth whitening device according to claim 4, characterized in that; The cross-section of the sealing rib is arc-shaped.

6. The secondary waterproof structure of the teeth whitening device according to claim 1, characterized in that: The upper shell is provided with a number of positioning posts, and the lower shell is provided with a number of positioning holes, with the positioning posts inserted into the positioning holes.

7. The secondary waterproof structure of a teeth whitening device according to claim 1, characterized in that: The main body is provided with a cavity for accommodating the components.

8. The secondary waterproof structure of the teeth whitening device according to claim 1, characterized in that: The lower shell has a card interface, through which the dental tray is connected to the main unit.

9. The secondary waterproof structure of a teeth whitening device according to claim 1, characterized in that... The cross-section of the annular rib is rectangular.

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