Waterproof panel switch assembly

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.

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 content such as usage reports are also added, greatly enriching the content of human-computer interaction of products. 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 personal care products 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 pressing force. Not only does the required pressing force double, but 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 significant impact on the product life and safety.

[0004] On the other hand, in products like electric toothbrushes, the panel is typically attached to a cylindrical handle, and both the panel and the handle usually have an arc-shaped contour. It is difficult to form a durable, sealed connection between the panel and the handle, which have an arc-shaped contour. For example, the reliability of ultrasonic welding between the panel and the housing is reduced on curved surfaces, and gaps may exist between the panel and the handle, potentially leading to safety problems such as water leakage. [Overview of the project] [Problems that the invention aims to solve]

[0005] Therefore, it is necessary to improve conventional waterproof panel switch assemblies to ensure watertightness and reliability, as well as to enhance the user experience. [Means for solving the problem]

[0006] To overcome the problems of conventional waterproof panel switch assemblies, the present invention provides a waterproof panel switch assembly for personal care products, the assembly comprising: a housing portion having a housing body and a hole located in the housing body; a panel having a panel body and a panel elastic portion fixed to the panel body, and fitting into the hole; an internal casing portion disposed inside the housing portion and having an internal casing body and an internal switch elastic portion fixed to the internal casing body; and a switch disposed inside the internal casing portion and positioned below the internal switch elastic portion, wherein the panel is The panel elastic portion further comprises a panel pressing block enclosed within the panel elastic portion, the panel elastic portion connecting the panel pressing block and the panel body, the internal casing portion further comprises an internal switch pressing block enclosed within the internal switch elastic portion, the internal switch elastic portion connecting the internal switch pressing block and the internal casing body, the panel pressing block and the internal switch pressing block are aligned, the internal switch pressing block and the switch are aligned, and when no pressing force is applied to the panel elastic portion of the panel, there is a gap between the panel elastic portion and the internal switch elastic portion.

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

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

[0009] According to another aspect of the present invention, the panel is bonded or ultrasonically welded to the internal casing.

[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 portion and the internal switch elastic portion are made of a second material having different elasticity from the first material, and the first material does not substantially deform even when a force is applied to operate the switch.

[0011] According to another aspect of the present invention, the panel pressing block forms an indicator mark on the outside of the panel, and the panel pressing block is not connected to the panel body. 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 comprises a circuit board, the switch is mounted on the circuit board, and the circuit board is disposed in the internal casing.

[0013] According to another aspect of the present invention, a display is further mounted on the circuit board, the internal casing further comprises an internal transparent portion in 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 comprises an internal transparent portion, the internal transparent portion being injection-molded integrally with the internal casing body, the internal casing body, the internal switch elastic portion, the internal switch pressing block, and the internal transparent portion being formed by injection molding as a single unit capable of waterproofing and sealing at positions corresponding to the holes in the housing portion.

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

[0016] The panel switch assembly according to the present invention combines excellent watertight reliability with switch operability. Since the display is located inside the internal casing and the internal casing is formed as a single unit by injection molding, external fluids cannot enter through the panel holes in the housing, preventing them from coming into contact with the display inside, thus protecting the normal operation of the display. At the same time, since the elastic part that moves the switch is formed by laminating two thin elastic layers with a gap between them, the required pressing force is significantly reduced in the switch of the present invention compared to conventional switches made of a single thick elastic material, improving the user's comfort of operating the switch. [Brief explanation of the drawing]

[0017] The present invention will be further described with reference to exemplary embodiments shown in the drawings. These exemplary embodiments are provided for non-limiting purposes only. It should be noted that the drawings are merely schematic representations of examples of the present invention provided for non-limiting purposes only.

[0018] [Figure 1] Figure 1 is an exploded view showing a waterproof panel switch assembly according to a preferred embodiment of the present invention. [Figure 2] Figure 2 is a perspective view showing the installed state of a waterproof panel switch assembly according to a preferred embodiment of the present invention. [Figure 3] Figure 3 is a partial cross-sectional perspective view showing a panel according to a preferred embodiment of the present invention. [Figure 4] Figure 4 is a perspective view showing an internal casing and circuit board according to a preferred embodiment of the present invention. [Figure 5] Figure 5 is a cross-sectional perspective view showing a panel switch assembly according to a preferred embodiment of the present invention. [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 waterproofing 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 matching shapes. In a preferred embodiment, the housing part 1 has a substantially cylindrical shape, and 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. The inner casing part 2 fits snugly inside the housing part 1, forming 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 section 2 comprises an internal casing body 21, internal switch elastic sections 22 and 23, internal switch pressing blocks 24 and 25, and an internal transparent section 26. In a preferred embodiment, the internal switch elastic sections 22 and 23 have a circular outer contour and are spaced apart from each other. The internal transparent section 26 is light-transmitting, and in a preferred embodiment, the internal transparent section 26 is rectangular.

[0025] The internal switch pressing blocks 24 and 25 are each enclosed by the internal switch elastic parts 22 and 23, respectively; that is, the internal switch pressing blocks 24 and 25 are connected to each other, at least partially surrounded by the switch elastic parts 22 and 23. The switch elastic parts 22 and 23 connect the internal switch pressing blocks 24 and 25 to the internal casing body 21, so that the internal switch pressing blocks 24 and 25 are displaced as the elastic parts 22 and 23 elastically deform due to force. Preferably, as shown in Figure 1, the internal switch pressing blocks 24 and 25 are located approximately midway between the internal switch elastic parts 22 and 23, and the position of the internal switch pressing blocks 24 and 25 is set to align with the switches 32 and 33 below them.

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

[0027] Panel 4 mainly comprises 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 fitted into the hole 11. In other alternative embodiments, the panel body 41 may be fitted only partially into the hole 11.

[0028] The panel elastic parts 42 and 44 have a circular outer contour, and preferably, the circular outer contours of the panel elastic parts 42 and 44 correspond to the outer contours of the internal switch elastic parts 22 and 23. The two panel elastic parts 42 and 44 are located at opposite ends of the panel body 41, separated by a distance. The shortest distance between the two panel elastic parts 42 and 44 along the direction of the handle vertical axis L1 is greater than the length of the display 31 along the direction of the handle vertical axis L1, and accordingly, the shortest distance between the internal switch elastic parts 22 and 23 along the direction of the handle vertical axis L1 is also greater than the length of the display 31 along the direction of the handle vertical axis L1. In this way, the display content of the display 31 housed inside is not obstructed by each of the elastic parts 22, 23, 42, and 44.

[0029] The panel pressing blocks 46 and 47 are enclosed by the panel elastic parts 42 and 44; in other words, the panel pressing blocks 46 and 47 are connected to each other, at least partially surrounded by the panel elastic parts 42 and 44. The panel elastic parts 42 and 44 connect the panel pressing blocks 46 and 47 to the panel body 41, so that the panel pressing blocks 46 and 47 are displaced as the elastic parts 42 and 44 elastically deform due to force. Preferably, the panel pressing blocks 46 and 47 are enclosed at approximately the center of the panel elastic parts 42 and 44, and preferably, the panel pressing blocks 46 and 47 are not connected to the panel body 41.

[0030] Panel 4 further comprises specific mark portions 43, 45 that are injection-molded to be exposed on the outside of the panel elastic portions 42, 44, and generally the two mark portions 43, 45 are different to indicate different operational functions. In a preferred embodiment, the mark portions 43, 45 are injection-molded integrally with the panel pressing blocks 46, 47, i.e., the mark portions 43, 45 are part of the panel pressing blocks 46, 47. In other alternative embodiments, the mark portions 43, 45 may be separate from the panel pressing blocks 46, 47, and the mark portions 43, 45 may be independently molded on the outside of the panel elastic portions 42, 44 in a selected material, or may be formed on the outer surface 42, 44 of the elastic portions by printing.

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

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

[0033] When the panel 4, housing 1, and internal casing 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 is applied to the elastic parts 42, 44 of the panel 4, there is no contact between the panel elastic parts 42, 44 and the internal switch elastic parts 22, 23, 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 gap formed between the panel elastic parts 42, 44 and the internal switch elastic parts 22, 23, as shown in Figure 5, the panel pressing blocks 46, 47 protrude from the inner surfaces of the panel elastic parts 42, 44 inside the housing part 1, and the amount of protrusion of the pressing blocks 46, 47 causes the inner surfaces of the panel pressing blocks 46, 47 to be close to or in contact with the outer surfaces of the internal switch pressing blocks 24, 25. In this case, the outer surfaces of the internal switch pressing blocks 24, 25 may be flush with the outer 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 relative to the outer surface of the internal switch elastic portion, 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 portions 42, 44. Alternatively, in yet another alternative embodiment, the internal switch pressing blocks 24, 25 and the panel pressing blocks 46, 47 each protrude relative to the elastic portion in which they are located.

[0036] In the various embodiments of the pressing blocks described above, it will be understood that the sum of the protrusions of the internal switch pressing blocks 24, 25 and the panel pressing blocks 46, 47 that are in contact with them, relative to the surface of the elastic part where each is located corresponds to the size of the gap between the two adjacent elastic parts.

[0037] In a preferred embodiment, the panel 4 is fixed to the internal casing 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 Figure 3, a rib 411 is integrally provided on the inner side of the panel body 41 toward the internal casing portion 2, and the rib 411 protrudes from the inner surface of the panel elastic portions 42 and 44, and the panel 4 is fixed to the internal casing portion 2 by bonding or ultrasonic welding the rib 411 to the internal casing body 21. In this case, the double-sided adhesive layer 5 may have a shape corresponding to the rib 411. For example, as shown in Figure 5, the double-sided adhesive layer 5 has an outer contour corresponding to the panel, and has two circular holes corresponding to the elastic portions 22 and 23 and a rectangular hole corresponding to the transparent material 26, and the rib 411 in the panel body has a shape corresponding to it.

[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 preferred embodiment described above, the switch assembly comprises panel elastic parts 42, 44 and internal switch elastic parts 22, 23, with a gap 48 between the panel elastic part 42 and the internal switch elastic part 22, and a gap 49 between the panel elastic part 44 and the internal switch elastic part 23. More specifically, a gap 48 is provided between the panel elastic part 42 and the internal switch elastic part 22 in at least the region facing the switch 33, and a gap 49 is provided between the panel elastic part 44 and the internal switch elastic part 23 in at least the region facing the switch 32. This effectively reduces the thickness of each layered elastic part in the panel elastic parts 42, 44 and the internal switch elastic parts 23, 22. Furthermore, since the conventional single-layer thick elastic material is changed to two layers of thin elastic material stacked with a gap between them, the pressing force applied to the two-layer elastic material stacked with a gap between them is significantly smaller than the pressing force applied to the single-layer thick elastic material when the displacement is the same, thereby reducing the pressing force applied by the user when operating the switch.

[0041] On the other hand, when the panel pressing blocks 46, 47 and the internal switch pressing blocks 24, 25 are pressed, the deformation of these pressing blocks 46, 47, 24, 25 themselves is extremely small, or hardly deforms at all, so that the pressing force can be transmitted directly and effectively to the switches 32, 33. Generally, the distance between the panel pressing blocks 46, 47 and the internal switch pressing blocks 25, 24 is less than 0.5 mm when no force is applied, and preferably, the panel pressing blocks 46, 47 contact the internal switch pressing blocks 25, 24 respectively, but without causing deformation to the elastic parts 22, 23, 42, 44. As a result, the pressing force applied to the mark portion 45, 43 of the panel is more easily transmitted effectively to the switches 32, 33, ensuring reliable and error-free switching operation and maintaining the responsiveness of the switches 32, 33.

[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 internal switch pressing blocks 25, 24 may be made of one or more materials that are relatively rigid and do not deform significantly with everyday hand handling. In contrast, the panel elastic parts 42, 44 and internal switch elastic parts 22, 23 are made of materials that elastically deform with everyday hand handling.

[0043] The elastic material of the internal switch elastic parts 22 and 23 is typically elastic TPE, TPR, polyamide, etc. The relatively hard material of the internal casing body 21 and housing body 12 is typically plastic such as ABS, PC, or organic glass.

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

[0045] On the other hand, as shown in Figures 3 and 5, panel 4 is also constructed as a single, 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 marking portions 43, 45 for display are formed on the outside of the panel pressing blocks 46, 47.

[0046] The panel pressing blocks 46, 47 and marking portions 43, 45 are not connected to the panel body 41, and the panel pressing blocks 46, 47 protrude from 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 corresponding blind holes in the mold. When the panel elastic portions 42, 44 are injection molded, the panel pressing blocks 46, 47 are always fixed in corresponding blind holes in the mold, preventing the panel pressing blocks 46, 47 and marking portions 43, 45 from deforming or distorting due to the impact of the injection pressure. Because the panel pressing blocks 46, 47 protrude from the inner surfaces of the panel elastic portions 42, 44 inside the housing portion 1, when the panel elastic portions 42, 44 are injection molded, the panel pressing blocks 46, 47 are always fixed in corresponding blind holes in the mold, making the panel injection molding process more reliable and stable. Then, by injection molding the material for the panel elastic parts 42 and 44 onto the already molded panel pressing blocks 46 and 47 and the panel body 41, the panel elastic parts 42 and 44 enclose the panel pressing blocks 47 and 46 and become integrated with the panel body 41.

[0047] The panel switch assembly according to the present invention has excellent watertightness. Since the display 31 is mounted on the circuit board 3 and located within the internal casing 2, and the internal casing 2 is formed as a single unit by injection molding, external fluids cannot enter the internal casing 2 through the panel holes 11 of the housing 1, and therefore the fluids cannot come into contact with the display inside, ensuring the normal operation of the display. At the same time, the elastic button portions that move the switches 32 and 33 on the circuit board 3 are each formed by laminating two thin elastic portions with a gap in between, so the required pressing force is significantly reduced compared to a single thick elastic material.

[0048] In applications such as electric toothbrushes, the housing portion 1 is formed as a cylindrical or cylindrical handle portion, having an arc-shaped contour, and the internal casing portion 2 is configured as an integrated waterproof structure in the area covering the switch display. Therefore, waterproofing is not so required for the connection between the panel 4 and the housing portion 1, and even if there is a gap, the internal casing portion 2 can reliably ensure the waterproof effect of the handle. The above description of the internal casing portion 2 being configured as an integrated waterproof structure in the area covering the switch display means that fluid cannot enter the interior of the internal casing portion 2 from the hole 11 in the housing body 12. The above description is merely an explanation of the principle of the present invention, and other variations are possible. For example, the number of switches is not limited to two, but may be one or more, the internal casing portion and housing portion are not limited to a cylindrical shape, and the shape of the panel can be changed by the shape of the housing portion and the shape and arrangement of the display and switches. Many modifications and changes can be easily conceived by those skilled in the art, and the present invention is not intended to be limited to the exact structure and operation disclosed and described herein. While preferred embodiments have been described, details can be modified without departing from the scope of the invention as defined by the claims. [Explanation of Symbols]

[0049] 1 Housing section 11 holes 12 Housing body 2. Internal casing section 21 Internal casing body 22,23 Internal switch elastic part 24,25 Internal switch pressing block 26 Internal transparent part 3 Circuit board 31 displays 32,33 switches 4 panels 41 Panel body 42,44 Panel elastic section 43,45 Panel switch mark 46,47 Panel pressing block 48 gaps 49 Gap 411 Rib 5. Double-sided adhesive layer L1 Handle vertical axis

Claims

1. A housing body (12) and a housing portion (1) having 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), The internal casing portion (2) is disposed inside the housing portion and has an internal casing body (21) and internal switch elastic parts (22, 23) fixed to the internal casing body, Switches (32, 33) are located inside the internal casing, In a waterproof panel switch assembly, The panel (4) further comprises panel pressing blocks (47, 46) enclosed within the panel elastic portions (42, 44), The panel elastic portion connects the panel pressing block and the panel body. The internal casing portion (2) further comprises internal switch pressing blocks (24, 25) enclosed within the internal switch elastic portions (22, 23), The internal switch elastic part connects the internal switch pressing block and the internal casing body to form a waterproof structure. The panel pressing block and the internal switch pressing block are aligned, The internal switch pressing block and the switch are aligned, The panel elastic parts (42, 44) and the internal switch elastic parts (22, 23) are aligned. If no pressing force is applied to the panel elastic portion of the panel, there is a gap between the panel elastic portion and the internal switch elastic portion. The internal casing portion (2) further comprises an internal transparent portion (26), The aforementioned transparent interior portion is injection-molded integrally with the interior casing body. A waterproof panel switch assembly for personal care products, characterized by the following features.

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

3. The panel pressing blocks (46, 47) protrude from the inner surface of the panel elastic portion (42, 44) and / or The internal switch pressing blocks (24, 25) protrude from the outer surface of the internal switch elastic portion (22, 23), A waterproof panel switch assembly according to claim 1 or 2, characterized in that it is a waterproof panel switch assembly.

4. The panel (4) is bonded or ultrasonically welded to the internal casing body (21) of the internal casing portion. The waterproof panel switch assembly according to claim 1.

5. The panel pressing block and / or the internal switch pressing block are made of a first material. The panel elastic portion and the internal switch elastic portion are made of a second material having elasticity different from that of the first material. Even when a force is applied to operate the switch, the first material does not substantially deform. The waterproof panel switch assembly according to claim 1.

6. The panel pressing blocks (46, 47) have display marks formed on the outside of the panel. The panel pressing blocks (46, 47) and the panel body (41) are not connected. The waterproof panel switch assembly according to claim 1.

7. The internal switch pressing block is attached to the internal casing body, The waterproof panel switch assembly according to claim 1.

8. The assembly further comprises a circuit board (3), The switches (32, 33) are mounted on the circuit board. The circuit board is placed in the internal casing. The waterproof panel switch assembly according to claim 1.

9. A display (31) is further mounted on the circuit board (3). The internal casing portion (2) includes the internal transparent portion (26) in the portion corresponding to the display. The panel body is made of a transparent material. The waterproof panel switch assembly according to claim 8.

10. The internal casing body, the internal switch elastic part, the internal switch pressing block, and the internal transparent part are formed by injection molding as a single unit that can be waterproofed and sealed at the position corresponding to the hole in the housing part (1), The waterproof panel switch assembly according to claim 1.

11. The panel body, the panel elastic portion, and the panel pressing block are formed as a watertight, integrated unit by injection molding. The waterproof panel switch assembly according to claim 1.

12. A housing portion (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), The internal casing portion (2) is disposed inside the housing portion and has an internal casing body (21) and internal switch elastic parts (22, 23) fixed to the internal casing body, Switches (32, 33) are located inside the internal casing, In a waterproof panel switch assembly, The panel (4) further comprises panel pressing blocks (47, 46) enclosed within the panel elastic portions (42, 44), The panel elastic portion connects the panel pressing block and the panel body. The internal casing portion (2) further comprises internal switch pressing blocks (24, 25) enclosed within the internal switch elastic portions (22, 23), The internal switch elastic part connects the internal switch pressing block and the internal casing body. The panel pressing block and the internal switch pressing block are aligned, The internal switch pressing block and the switch are aligned, If no pressing force is applied to the panel elastic portion of the panel, there is a gap between the panel elastic portion and the internal switch elastic portion. The internal casing portion (2) further comprises an internal transparent portion (26), The aforementioned internal transparent portion 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 by injection molding as a single unit capable of waterproofing and sealing at the position corresponding to the hole in the housing part (1). A waterproof panel switch assembly for personal care products, characterized by the following features.

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