Waterproof Panel Switch Assembly

The waterproof panel switch assembly for personal care products addresses the challenges of watertightness and operation force transmission by using a dual-layer elastic material design and injection molding to create a reliable and user-friendly switch assembly.

JP2025518388AActive Publication Date: 2025-06-12SHANGHAI SHIFT ELECTRIC CO LTD
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Patent Information

Application Number
JP2024572232
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Priority Date
2022-06-09
Filing Date
2023-05-05
Publication Date
2025-06-12
Estimated Expiration
2043-05-05

AI Technical Summary

Technical Problem

Existing waterproof panel switch assemblies for personal care products face challenges in maintaining watertightness and reliability while ensuring proper operation force transmission and preventing water leakage, especially when the switch pressing part is thick or thin.

Method used

A waterproof panel switch assembly design featuring a housing body with a hole, a panel with a panel body and elastic part, and an inner casing part with an inner switch elastic part and switch, where the panel pressing block and inner switch pressing block are aligned and made of different materials with varying elasticity, and the assembly is formed by injection molding to ensure a durable and watertight connection.

Benefits of technology

The assembly achieves excellent watertight reliability and improved switch operability by reducing the required pressing force and enhancing user comfort, while preventing water from contacting the internal display and ensuring the normal operation of the display.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention provides a waterproof panel switch assembly. The assembly includes a housing body and a housing part having a hole located therein, a panel having a panel body and a panel elastic part located thereon, an inner casing part disposed inside the housing part and having an inner casing body and an inner switch elastic part fixed to the inner casing body, and a switch disposed inside the inner casing part. The panel further includes a panel pressing block wrapped by the panel elastic part. The inner casing part further includes an inner switch pressing block wrapped by the inner switch elastic part. The panel pressing block and the inner switch pressing block are aligned, and the inner switch pressing block and the switch are aligned. When no pressing force acts on the panel elastic part of the panel, there is a gap between the panel elastic part and the inner switch elastic part. On the premise of ensuring the waterproof performance of the panel switch assembly, the pressing force required for the switch of the present invention is significantly reduced, and the comfort of the user's switch operation is improved.
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Description

Technical Field

[0001] The present invention relates to the technical field of personal care products, and particularly to a waterproof panel switch assembly for personal care products.

Background Art

[0002] With the improvement of living standards, the requirements for visualization, that is, the requirements for human-computer interaction (HCI), for the state of personal care products and the information of personal care products are becoming increasingly high. In order to enhance the level of human-computer interaction of products, in addition to adding a display for displaying various states of personal care products such as battery capacity, operating mode, and pressure range to personal care products, some welcome interfaces and contents such as usage reports are also added, and the content of human-computer interaction of products has been greatly enriched. With the addition of the display, in order to ensure the safe and reliable use of the display and related circuits over a long period of time, it is necessary to add a reliable structure for ensuring waterproofing and sealing to the product.

[0003] In order to match the use of the display, the switch assembly in the personal care product is provided with a transparent panel attached above the display, and a switch pressing part made of an elastic part is attached to the panel. In order to prevent water from entering the panel from the outside, the elastic part constituting the switch pressing part is integrated with the panel by injection molding and has a certain thickness to ensure durability and waterproof effect. However, a thick switch pressing part is disadvantageous for the transmission of the pressing force. Not only does the required pressing force double, but also the transmission accuracy of the pressing force decreases, and the operation feeling deteriorates. However, if the thickness of the switch pressing part is reduced, the elastic part is likely to be peeled off from the panel body due to repeated operation of the switch pressing part, resulting in water leakage during use, which may have a serious impact on the life and safety of the product.

[0004] On the one hand, in products such as electric toothbrushes, the panel is usually attached to a cylindrical handle, and the panel and the handle to which the panel is attached usually have an arc-shaped contour. It is difficult to form a durable sealed connection between the panel with the arc-shaped contour and the handle part. For example, in the case of a curved surface with curvature, the reliability of ultrasonic welding between the panel and the housing decreases, there is a gap between the panel and the handle part, which may cause a safety problem of water leakage.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, it is necessary to improve the conventional waterproof panel switch assembly to ensure watertightness and reliability, and at the same time improve the user's operation feeling.

Means for Solving the Problems

[0006] To overcome the problems of the waterproof panel switch assembly in the prior art, the present invention provides a waterproof panel switch assembly for personal care products, the assembly comprising a housing body and a housing part having a hole located in the housing body, a panel having a panel body and a panel elastic part fixed to the panel body, the panel being fitted into the hole, an inner casing part disposed inside the housing part and having an inner casing body and an inner switch elastic part fixed to the inner casing body, and a switch disposed inside the inner casing part and below the inner switch elastic part, the panel further comprising a panel pressing block wrapped by the panel elastic part, the panel elastic part connecting the panel pressing block and the panel body, the inner casing part further comprising an inner switch pressing block wrapped by the inner switch elastic part, the inner switch elastic part connecting the inner switch pressing block and the inner casing body, the panel pressing block and the inner switch pressing block being aligned, the inner switch pressing block and the switch being aligned, and when no pressing force acts on the panel elastic part of the panel, there is a gap between the panel elastic part and the inner switch elastic part.

[0007] According to one aspect of the present invention, when no force acts on the panel elastic part of the panel, the distance between the panel pressing block and the inner switch pressing block is less than 0.5 mm, or the panel pressing block and the inner switch pressing block are in contact.

[0008] According to another aspect of the present invention, the panel pressing block protrudes with respect to the inner surface of the panel elastic part, and / or the inner switch pressing block protrudes with respect to the outer surface of the inner switch elastic part.

[0009] According to another aspect of the present invention, the panel is adhered or ultrasonically welded to the inner casing part.

[0010] According to another aspect of the present invention, the panel pressing block and the internal switch pressing block are made of a first material, the panel elastic part and the internal switch elastic part are made of a second material having elasticity different from that of the first material, and even when a force for operating the switch acts, the first material does not substantially deform.

[0011] According to another aspect of the present invention, the panel pressing block forms a display mark on the outside of the panel, and the panel pressing block and the panel body are not connected. Preferably, the internal switch pressing block is attached to the internal casing body.

[0012] According to another aspect of the present invention, the assembly further includes a circuit board, the switch is mounted on the circuit board, and the circuit board is disposed in the internal casing portion.

[0013] According to another aspect of the present invention, a display is further mounted on the circuit board, the internal casing portion further includes an internal transparent portion at a location corresponding to the display, and the panel body is made of a transparent material.

[0014] According to another aspect of the present invention, the internal casing portion further includes an internal transparent portion, the internal transparent portion is integrally injection-molded with the internal casing body, and the internal casing body, the internal switch elastic portion, the internal switch pressing block, and the internal transparent portion are formed as an integral waterproof and airtight object at a position corresponding to the hole of the housing portion by injection molding.

[0015] According to another aspect of the present invention, the panel body, the panel elastic part, and the panel pressing block are formed as a watertight integral object by injection molding.

Advantages of the Invention

[0016] The panel switch assembly according to the present invention has excellent watertight reliability and switch operability. Since the display is located inside the internal casing part, and at the same time the internal casing part is integrally formed by injection molding, external fluid cannot penetrate from the panel holes of the housing part, the fluid cannot contact the display inside, and the normal operation of the display is protected. At the same time, since the elastic part for moving the switch is formed by laminating two thin elastic layers with a gap therebetween, compared with the switch part made of a conventional single-layer thick elastic material, the required pressing force of the switch of the present invention is significantly reduced, and the comfort of the user's switch operation is improved.

Brief Description of the Drawings

[0017] The present invention will be further described with reference to the exemplary embodiments shown in the drawings. The exemplary embodiments are shown as non-limiting descriptions. Note that the drawings are only schematic representations of the embodiments of the present invention shown as non-limiting examples.

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Modes for Carrying Out the Invention

[0019] Hereinafter, embodiments of the waterproof panel switch assembly of the present invention will be described with reference to the drawings.

[0020] FIG. 1 is a perspective view showing an exploded state of a waterproof panel switch assembly according to a preferred embodiment of the present invention, and FIG. 2 is a perspective view showing an assembled state of this waterproof panel switch assembly. As an example, the waterproof panel switch assembly can be used in an electric toothbrush. The assembly can also be used in other personal care products that require waterproofness for the switch panel assembly, such as an electric shaver, an oral irrigator, etc.

[0021] As shown in FIG. 1, the waterproof panel switch assembly mainly includes a housing part 1, a panel 4, and an inner casing part 2. The waterproof panel assembly further includes switches 32, 33, and the switches 32, 33 are usually attached to a circuit board 3.

[0022] The housing part 1 and the inner casing part 2 have a matching shape. In a preferred embodiment, the housing part 1 has a substantially cylindrical shape, the inner casing part 2 also has a substantially cylindrical shape, the outer diameter of the cylinder of the inner casing part 2 is equal to or slightly smaller than the inner diameter of the cylinder of the housing part 1, and the inner casing part 2 fits snugly inside the housing part 1 to form a double-shell waterproof structure. Generally, the housing part 1 and the inner casing part 2 are molded as an integral body. The circuit board 3 on which the switches 32, 33 are mounted is installed in the inner cavity of the inner casing part 2. In an example of the waterproof panel switch assembly used in an electric toothbrush, the cylindrical housing part 1 is configured as the handle of the electric toothbrush.

[0023] The housing part 1 includes a housing body 12 and a hole 11 in the housing body 12. As shown in FIG. 2, the panel 4 is aligned with the hole 11 of the housing part 1. In a preferred embodiment, the hole 11 of the housing part 1 is formed in an oval shape, and both ends in the longitudinal axis direction of the oval are semi-circular.

[0024] The internal casing part 2 includes an internal casing body 21, internal switch elastic parts 22, 23, internal switch pressing blocks 24, 25, and an internal transparent part 26. In a preferred embodiment, the internal switch elastic parts 22, 23 have a circular outer contour and are arranged at intervals from each other. The internal transparent part 26 is light-transmissive, and in a preferred embodiment, the internal transparent part 26 is rectangular.

[0025] The internal switch pressing blocks 24, 25 are respectively wrapped by the internal switch elastic parts 22, 23, that is, the internal switch pressing blocks 24, 25 are at least partially surrounded by the switch elastic parts 22, 23 and are connected to each other. And the switch elastic parts 22, 23 connect the internal switch pressing blocks 24, 25 to the internal casing body 21, whereby the internal switch pressing blocks 24, 25 will be displaced as the elastic parts 22, 23 are elastically deformed by force. Preferably, as shown in FIG. 1, the internal switch pressing blocks 24, 25 are at a substantially middle position of the internal switch elastic parts 22, 23, and the positions of the internal switch pressing blocks 24, 25 are set to be aligned with the lower switches 32, 33.

[0026] In a preferred embodiment, the two switches 32, 33 are mounted on the circuit board 3 at a distance, a display 31 is provided between the two switches 32, 33, and the display 31 is also mounted on the circuit board 3 in the same way. The switches 32, 33 are aligned with the pressing blocks 24, 25, and the position of the display 31 is substantially aligned with the internal transparent part 26 in the internal casing part 21.

[0027] The panel 4 mainly includes a panel body 41, panel elastic parts 42, 44, and panel pressing blocks 46, 47. In a preferred embodiment, the outer contour of the panel body 41 corresponds to the shape of the inner contour of the hole 11, and the entire panel body 41 can be mounted in the hole 11. In other alternative embodiments, the panel body 41 may be partially mounted in the hole 11.

[0028] The panel elastic parts 42 and 44 have a circular outer contour. Preferably, the circular outer contour of the panel elastic parts 42 and 44 corresponds to the outer contour of the internal switch elastic parts 22 and 23. The two panel elastic parts 42 and 44 are located at both ends of the panel body 41 with a distance therebetween. The shortest distance between the two panel elastic parts 42 and 44 along the handle longitudinal axis L1 is greater than the length of the display 31 along the handle longitudinal axis L1, and correspondingly, the shortest distance between the internal switch elastic parts 22 and 23 along the handle longitudinal axis L1 is also greater than the length of the display 31 along the handle longitudinal axis L1. In this way, the display content of the display 31 accommodated inside is not blocked by the respective elastic parts 22, 23, 42, and 44.

[0029] The panel pressing blocks 46 and 47 are wrapped by the panel elastic parts 42 and 44. In other words, the panel pressing blocks 46 and 47 are at least partially surrounded by the panel elastic parts 42 and 44 and are connected to each other. And the panel elastic parts 42 and 44 connect the panel pressing blocks 46 and 47 to the panel body 41. As a result, the panel pressing blocks 46 and 47 will be displaced as the elastic parts 42 and 44 elastically deform under force. Preferably, the panel pressing blocks 46 and 47 are wrapped at the substantially central positions of the panel elastic parts 42 and 44. Preferably, the panel pressing blocks 46 and 47 are not connected to the panel body 41.

[0030] The panel 4 further includes specific mark parts 43 and 45 injection-molded to be exposed outside the panel elastic parts 42 and 44. Generally, the two mark parts 43 and 45 are different to indicate different operating functions. In a preferred embodiment, the mark parts 43 and 45 are injection-molded integrally with the panel pressing blocks 46 and 47, that is, the mark parts 43 and 45 are part of the panel pressing blocks 46 and 47. In other alternative embodiments, the mark parts 43 and 45 may be separate from the panel pressing blocks 46 and 47. The mark parts 43 and 45 may be independently molded outside the panel elastic parts 42 and 44 with a selected material, or may be formed on the outer surfaces 42 and 44 of the elastic parts by printing.

[0031] The panel body 41 and the panel elastic part 42 are formed of different materials, and the panel body 41 and the panel pressing blocks 46, 47 are formed of a material harder than that of the panel elastic part 42. The material of the panel elastic part 42 has higher elasticity than the materials of the panel body 41 and the panel pressing blocks 46, 47.

[0032] The material of the panel body 41 is usually a plastic such as ABS, PC, PP, organic glass, PETG, etc. The materials of the panel elastic parts 42, 44 are usually elastic TPE, TPR, polyamide, etc. The materials of the panel pressing blocks 46, 47, the switch mark part 43, and the panel switch mark part 45 are usually plastics such as ABS, PC, PP, organic glass, PETG, etc. When the display 31 is provided on the circuit board 3, the panel body 41 is formed of a transparent material so that the display 31 can be visually recognized from the outside.

[0033] When the panel 4, the housing part 1, and the internal casing part 2 are assembled, the panel elastic parts 42, 44 and the internal switch elastic parts 22, 23 are aligned in the pressing direction, and in particular, the internal switch pressing blocks 24, 25 and the panel pressing blocks 46, 47 come into contact with each other. When no force acts on the elastic parts 42, 44 of the panel 4, the panel elastic parts 42, 44 and the internal switch elastic parts 22, 23 do not contact each other, and gaps 48, 49 are formed. The dimensions of the gaps 48, 49 are preferably set to 0.5 mm to 1 mm.

[0034] Corresponding to the gaps formed between the panel elastic parts 42, 44 and the internal switch elastic parts 22, 23, as shown in FIG. 5, the panel pressing blocks 46, 47 protrude from the inner side surfaces of the panel elastic parts 42, 44 inside the housing part 1, and due to the protruding amount of the pressing blocks 46, 47, the inner side surfaces of the panel pressing blocks 46, 47 and the outer side surfaces of the internal switch pressing blocks 24, 25 are close to or in contact with each other. In this case, the outer side surfaces of the internal switch pressing blocks 24, 25 may be flush with the outer side surfaces of the internal switch elastic parts 42, 44.

[0035] In an alternative embodiment, the outer surfaces of the internal switch pressing blocks 24, 25 may be configured to protrude with respect to the outer surfaces of the internal switch elastic parts, and the inner surfaces of the panel pressing blocks 46, 47 may be configured to be flush with the inner surfaces of the panel elastic parts 42, 44. Or, in yet another alternative embodiment, the internal switch pressing blocks 24, 25 and the panel pressing blocks 46, 47 protrude with respect to the elastic parts where they are respectively located.

[0036] In various embodiments of the pressing blocks described above, it will be understood that the sum of the protruding amounts of the internal switch pressing blocks 24, 25 and one of the panel pressing blocks 46, 47 in contact therewith with respect to the surfaces of the elastic parts where they are respectively located corresponds to the size of the gap between two adjacent elastic parts.

[0037] In a preferred embodiment, the panel 4 is fixed to the internal casing part 2. Preferably, the panel body 41 is adhesively fixed to the internal casing body 21 by a double-sided adhesive layer 5.

[0038] Preferably, as shown in FIG. 3, ribs 411 are integrally provided on the inner side of the panel body 41 facing the internal casing part 2. The ribs 411 protrude with respect to the inner surfaces of the panel elastic parts 42, 44. By adhering or ultrasonic welding the ribs 411 to the internal casing body 21, the fixing of the panel 4 to the internal casing part 2 is achieved. In this case, the double-sided adhesive layer 5 may have a shape corresponding to the ribs 411. For example, as shown in FIG. 5, the double-sided adhesive layer 5 has an outer contour corresponding to the panel, and two circular holes corresponding to the elastic parts 22, 23 and a rectangular hole corresponding to the transparent material 26 are formed. The ribs 411 on the panel body have corresponding shapes.

[0039] In an alternative embodiment, the panel 4 may be fixed to the internal casing body 21 by an ultrasonic welding process.

[0040] In the above-described preferred embodiment, the switch assembly includes panel elastic parts 42 and 44 and internal switch elastic parts 22 and 23. A gap 48 is provided between the panel elastic part 42 and the internal switch elastic part 22, and a gap 49 is provided between the panel elastic part 44 and the internal switch elastic part 23. More specifically, at least in the region facing the switch 33, a gap 48 is provided between the panel elastic part 42 and the internal switch elastic part 22, and at least in the region facing the switch 32, a gap 49 is provided between the panel elastic part 44 and the internal switch elastic part 23. By doing so, the thickness of each layer-like elastic part in the panel elastic parts 42 and 44 and the internal switch elastic parts 23 and 22 is effectively reduced. Also, since the conventional single-layer thick elastic material is changed to two-layer thin elastic materials laminated with a gap therebetween, when the displacement is the same, the pressing force applied to the two-layer laminated elastic material with a gap is significantly smaller than the pressing force applied to the single-layer thick elastic material, and the pressing force during the user's switch operation is reduced.

[0041] On the other hand, when the panel pressing blocks 46 and 47 and the internal switch pressing blocks 24 and 25 are pressed, the deformation of these pressing blocks 46, 47, 24, and 25 themselves is extremely small and hardly deformed, so that the pressing force can be directly and effectively transmitted to the switches 32 and 33. Generally, the distance between the panel pressing blocks 46 and 47 and the internal switch pressing blocks 25 and 24 is less than 0.5 mm when no force acts. Preferably, the panel pressing blocks 46 and 47 are in contact with the internal switch pressing blocks 25 and 24 respectively, but do not cause deformation in the elastic parts 22, 23, 42, and 44. Thereby, the pressing force applied to the mark parts 45 and 43 of the panel is easily and effectively transmitted to the switches 32 and 33, the switching operation is performed reliably and without error, and the responsiveness of the switches 32 and 33 is ensured.

[0042] In a preferred embodiment, the panel body 41, the internal casing body 21, the housing body 12, and the panel pressing blocks 46, 47 and the internal switch pressing blocks 25, 24 may be made of one or more materials that are relatively hard and do not deform significantly during daily hand-held operations. In contrast, the panel elastic parts 42, 44 and the internal switch elastic parts 22, 23 are made of materials that elastically deform during daily hand-held operations.

[0043] The elastic materials of the internal switch elastic parts 22, 23 are usually elastic TPE, TPR, polyamide, etc. The relatively hard materials of the internal casing body 21 and the housing body 12 are usually plastics such as ABS, PC, and organic glass.

[0044] In the manufacturing process of the waterproof panel assembly according to the preferred embodiment, preferably, the internal casing body 21, the internal switch elastic parts 22, 23, and the internal switch pressing blocks 25, 24 are integrally formed by injection molding. Generally, first, the internal casing body 21 is injection molded, and then, based on the formed internal casing body 21, the internal switch elastic part 22, the internal switch elastic part 23, and the internal transparent part 26 are further injection molded. Preferably, as shown in FIG. 5, the internal switch pressing blocks 24, 25 and the internal casing body 21 are integrally formed of the same material in one injection molding step. In this case, the internal switch pressing blocks 24, 25 are parts integrally connected to the internal casing body 21 and can be regarded as parts that are movable relative to the remaining part of the internal casing body 21 as the elastic parts 22, 23 elastically deform. After the injection molding of the internal casing part 2 is completed, based on the internal casing part 2, the housing part 1 is injection molded so that the internal casing part 2 and the housing part 1 are integrated.

[0045] On the other hand, as shown in FIGS. 3 and 5, the panel 4 is also formed into an integral watertight component by an injection molding process. Preferably, the panel pressing blocks 46, 47 and the panel body 41 are injection molded using the same or different hard materials, and the display mark portions 43, 45 are formed on the outer side of the panel of the panel pressing blocks 46, 47.

[0046] The panel pressing blocks 46, 47, the mark portions 43, 45 and the panel body 41 are not connected. The panel pressing blocks 46, 47 project with respect to the inner surfaces of the panel elastic portions 42, 44 inside the housing portion 1. In injection molding, the panel pressing blocks 46, 47 are injected into the corresponding blind holes of the mold and formed. When injecting and molding the panel elastic portions 42, 44, by always fixing the panel pressing blocks 46, 47 to the corresponding blind holes of the mold, the panel pressing blocks 46, 47 and the mark portions 43, 45 are prevented from being deformed or distorted by the impact of the injection pressure. Since the panel pressing blocks 46, 47 project with respect to the inner surfaces of the panel elastic portions 42, 44 inside the housing portion 1, when injecting and molding the panel elastic portions 42, 44, by always fixing the panel pressing blocks 46, 47 to the corresponding blind holes of the mold, the injection molding process of the panel becomes more reliable and stable. Then, by injecting and molding the material of the panel elastic portions 42, 44 with respect to the already molded panel pressing blocks 46, 47 and the panel body 41, the panel elastic portions 42, 44 wrap around the panel pressing blocks 47, 46 and become integral with the panel body 41.

[0047] The panel switch assembly according to the present invention has excellent waterproof performance. Since the display 31 is mounted on the circuit board 3 and located inside the internal casing part 2, and at the same time the internal casing part 2 is integrally formed by injection molding, external fluid cannot enter the internal casing part 2 through the panel hole 11 of the housing part 1. Therefore, the fluid cannot contact the internal display, and the normal operation of the display can be ensured. At the same time, since the elastic button parts for moving the switches 32, 33 on the circuit board 3 are respectively formed by laminating two layers of thin elastic parts with a gap therebetween, the required pressing force is significantly reduced compared to a single-layer thick elastic material.

[0048] In applications such as an electric toothbrush, the housing part 1 is formed as a cylindrical or cylindrical handle part, having an arc-shaped contour. Also, since the internal casing part 2 is configured in an integral waterproof structure in the region covering the switch display, the waterproof property is not so required for the connection between the panel 4 and the housing part 1. Even if there is a gap, the waterproof effect of the handle can be surely ensured by the internal casing part 2. The above-mentioned that the internal casing part 2 is configured in an integral waterproof structure in the region covering the switch display means that fluid cannot enter the inside of the internal casing part 2 from the hole 11 of the housing body 12. The above description is only an explanation of the principle of the present invention, and other deformation forms are also possible. For example, the number of switches is not limited to two, and it may be one or more. The internal casing part and the housing part are not limited to a cylindrical shape, and the shape of the panel can be changed according to the shape of the housing part, the shape and arrangement of the display and the switches. A person skilled in the art can easily come up with many modifications and changes, so the present invention is not intended to be limited to the exact structure and operation disclosed and described herein. Although the preferred embodiments have been described, details can be changed without departing from the scope of the present invention defined by the claims.

Explanation of Reference Numerals

[0049] 1 Housing part 11 holes 12 housing body 2 inner casing part 21 inner casing body 22, 23 inner switch elastic parts 24, 25 inner switch pressing blocks 26 inner transparent part 3 circuit board 31 display 32, 33 switches 4 panel 41 panel body 42, 44 panel elastic parts 43, 45 panel switch marks 46, 47 panel pressing blocks 48 gap 49 gap 411 rib 5 double - sided adhesive layer L1 longitudinal axis of the handle

Claims

1. A housing part (1) having a housing body (12) and a hole (11) located in the housing body, A panel (4) having a panel body (41) and panel elastic parts (42, 44) fixed to the panel body, and fitting into the hole (11), An inner casing part (2) disposed inside the housing part and having an inner casing body (21) and inner switch elastic parts (22, 23) fixed to the inner casing body, Switches (32, 33) disposed inside the inner casing part, In a waterproof panel switch assembly comprising: The panel (4) further comprises panel pressing blocks (47, 46) wrapped by the panel elastic parts (42, 44), The panel elastic parts connect the panel pressing blocks and the panel body, The inner casing part (2) further comprises inner switch pressing blocks (24, 25) wrapped by the inner switch elastic parts (22, 23), The inner switch elastic parts connect the inner switch pressing blocks and the inner casing body, The panel pressing blocks and the inner switch pressing blocks are aligned, The inner switch pressing blocks and the switches are aligned, When no pressing force acts on the panel elastic parts of the panel, there is a gap between the panel elastic parts and the inner switch elastic parts, A waterproof panel switch assembly for personal care products, characterized in that.

2. When no force acts on the panel elastic parts (42, 44) of the panel (4), the distance between the panel pressing block and the inner switch pressing block is less than 0.5 mm, or the panel pressing block and the inner switch pressing block are in contact, The waterproof panel switch assembly according to claim 1, characterized in that.

3. The panel pressing blocks (46, 47) protrude with respect to the inner surface of the panel elastic parts (42, 44), and / or The inner switch pressing blocks (24, 25) protrude with respect to the outer surface of the inner switch elastic parts (22, 23), The waterproof panel switch assembly according to claim 1 or 2, characterized in that.

4. The panel (4) is adhered or ultrasonically welded to the inner casing body (21) of the inner casing part, The waterproof panel switch assembly according to claim 1, characterized in that.

5. The panel pressing block and / or the internal switch pressing block are made of a first material, The panel elastic part and the internal switch elastic part are made of a second material having elasticity different from that of the first material, Even when a force for operating the switch acts, the first material does not substantially deform. The waterproof panel switch assembly according to claim 1, characterized in that.

6. Display marks are formed on the outside of the panel of the panel pressing block (46, 47), The panel pressing block (46, 47) and the panel body (41) are not connected, and / or The internal switch pressing block is attached to the internal casing body, The waterproof panel switch assembly according to claim 1, characterized in that.

7. The assembly further includes a circuit board (3), The switches (32, 33) are mounted on the circuit board, The circuit board is arranged in the internal casing part, The waterproof panel switch assembly according to claim 1, characterized in that.

8. A display (31) is further mounted on the circuit board (3), The internal casing part (2) further includes an internal transparent part (26) at a position corresponding to the display, The panel body is made of a transparent material, The waterproof panel switch assembly according to claim 7, characterized in that.

9. The internal casing part (2) further includes an internal transparent part (26), The internal transparent part is injection-molded integrally with the internal casing body, The internal casing body, the internal switch elastic part, the internal switch pressing block, and the internal transparent part are formed as a waterproof and airtight integral body at a position corresponding to the hole of the housing part (1) by injection molding. The waterproof panel switch assembly according to claim 1, characterized in that.

10. The panel body, the panel elastic part, and the panel pressing block are formed as a watertight integral body by injection molding. The waterproof panel switch assembly according to claim 1, characterized in that.

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