WO2023236694A1 - 防水面板开关组件 - Google Patents

防水面板开关组件 Download PDF

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Publication number
WO2023236694A1
WO2023236694A1 PCT/CN2023/092140 CN2023092140W WO2023236694A1 WO 2023236694 A1 WO2023236694 A1 WO 2023236694A1 CN 2023092140 W CN2023092140 W CN 2023092140W WO 2023236694 A1 WO2023236694 A1 WO 2023236694A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
switch
elastic
waterproof
inner shell
Prior art date
Application number
PCT/CN2023/092140
Other languages
English (en)
French (fr)
Inventor
戴晓国
徐振武
Original Assignee
上海携福电器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海携福电器有限公司 filed Critical 上海携福电器有限公司
Publication of WO2023236694A1 publication Critical patent/WO2023236694A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/04—Cases; Covers
    • H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/84—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • H01H13/85—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback characterised by tactile feedback features
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/069—Other details of the casing, e.g. wall structure, passage for a connector, a cable, a shaft

Definitions

  • the present invention relates to the technical field of personal care products, and in particular to waterproof panel switch assemblies for personal care products.
  • display screens are added to personal care products.
  • the display screens are used to display various statuses of personal care products such as battery capacity, working mode, pressure range, and add some welcome interfaces and usage reports, etc.
  • the content greatly enriches the human-computer interaction content of the product.
  • display screens it is necessary to add some reliable structures to ensure waterproof sealing to ensure that the display screen and related circuits can be used safely and reliably for a long time.
  • the switch assembly in the personal care product includes a panel installed above the display screen.
  • the panel is transparent, and a switch pressing part made of an elastic part is also installed on the panel.
  • the elastic part that constitutes the switch pressing part is injection molded with the panel and has a certain thickness to ensure its durability and waterproof effect.
  • a thicker switch pressing part is unfavorable for the transmission of pressing force. Not only will the required pressing force be doubled, but the transmission of pressing force will also be less accurate and the operation will feel uncomfortable.
  • the thickness of the switch pressing part is reduced, repeated operations of the switch pressing part may easily cause the elastic part to peel off relative to the panel body, which may cause water leakage during use and seriously affect the service life and safety of the product.
  • the panel is mounted on a handle, which is usually cylindrical.
  • the panel and the handle portion on which the panel is mounted often have a curved profile, allowing the curved profile of the panel and handle portion to form a durable seal. Difficulty connecting. For example, a curved surface will cause unreliable ultrasonic welding between the panel and the shell. There may be a gap between the panel and the handle, posing a safety hazard of water leakage.
  • the present invention provides a waterproof panel switch assembly for personal care appliances.
  • the assembly includes: a shell part, the shell part includes a shell body and a switch located on the shell body. hole; panel, the panel includes a panel body and a panel elastic part fixed to the panel body, and the panel fits in the hole; an inner shell part, the inner shell part is arranged inside the outer shell part, And it includes an inner shell body and an inner switch elastic part fixed with the inner shell body, and a switch, the switch is arranged inside the inner shell part, and the switch is arranged below the inner switch elastic part, wherein , the panel further includes a panel pressure block enveloped by the panel elastic part, the panel elastic part connects the panel pressure block and the panel body, and the inner shell part also includes a panel pressure block enclosed by the inner switch elastic part.
  • the inner switch pressure block of the envelope is connected to the inner switch pressure block and the inner shell body by the inner switch elastic part.
  • the panel pressure block is aligned with the inner switch pressure block.
  • the inner switch pressure block and the inner switch pressure block are The switch is aligned, wherein there is a gap between the panel elastic portion and the inner switch elastic portion when the panel elastic portion of the panel is not acted upon by a pressing force.
  • the distance between the panel pressure block and the inner switch pressure block is less than 0.5 mm, or the panel pressure The block is in contact with the inner switch pressure block.
  • the panel pressing block protrudes relative to the inner surface of the panel elastic part, and/or the inner switch pressing block protrudes relative to the outer surface of the inner switch elastic part.
  • the panel is bonded or ultrasonically welded to the inner shell portion.
  • the panel pressure block and the inner switch pressure block are made of a first material, and the panel elastic part and the inner switch elastic part are made of an elastic third material different from the first material.
  • the first material does not substantially deform under the force of operating the switch.
  • the panel pressure block forms an identification mark on the outside of the panel, and the panel pressure block and the panel body are not connected.
  • an inner switch pressure block is attached to said inner housing body.
  • the assembly further includes a circuit board, the switch is mounted on the circuit board, and the circuit board is arranged in the inner housing part.
  • a display screen is further installed on the circuit board, and the inner shell further includes an inner transparent portion at a position corresponding to the display screen, and the panel body is made of transparent material. become.
  • the inner shell part further includes an inner transparent part, the inner transparent part is integrally injection molded with the inner shell body, the inner shell body, the inner switch elastic part, the inner switch pressure
  • the block and the inner transparent portion are injection molded to form a water-tight sealing unitary piece at a position corresponding to the hole in the outer shell portion.
  • the panel body, the panel elastic part and the panel pressing block are injection molded to form a watertight integral piece.
  • the panel switch assembly according to the present invention has both excellent watertight reliability and switch operability. Since the display screen is located inside the inner shell, and the inner shell is made into an integral part by injection molding, external fluid cannot enter through the panel hole of the outer shell, so the fluid cannot contact the display screen located inside to protect the normal operation of the display screen. .
  • the elastic part of the actuating switch is formed by superimposing two thin elastic layers with a gap. Therefore, compared with the traditional switch part of a single layer of thick elastic material, the pressing force required by the switch of the present invention is significantly greater. This reduces the user's comfort when operating the switch.
  • Figure 1 shows an exploded view of a waterproof panel switch assembly according to a preferred embodiment of the present invention.
  • FIG. 2 shows a perspective view of the waterproof panel switch assembly in an installed state according to the preferred embodiment of the present invention.
  • Figure 3 shows a partially cutaway perspective view of a panel according to a preferred embodiment of the present invention.
  • Figure 4 shows a perspective view of the inner shell and the circuit board according to the preferred embodiment of the present invention.
  • Figure 5 shows a cross-sectional perspective view of a panel switch assembly according to a preferred embodiment of the present invention.
  • Shell part 11 holes 12 shell body 2 inner shell part 21 inner shell body 22, 23 inner switch elastic part 24, 25 internal switch pressure block 26 inner transparent part 3 is the circuit board 31 display 32, 33 switch 4 panels 41 panel body 42, 44 panel elastic part 43, 45 panel switch symbols 46, 47 panel press block 48 gaps 49 gaps 411 convex rib 5 double-sided adhesive layer L1 is the longitudinal axis of the handle
  • FIG. 1 shows a perspective view of a waterproof panel switch assembly in an exploded state according to a preferred embodiment of the present invention
  • FIG. 2 shows a perspective view of the waterproof panel switch assembly in an assembled state.
  • the waterproof panel switch assembly may be used in an electric toothbrush.
  • This component can also be used in other personal care appliances that have waterproof requirements for switch panel components, such as electric shavers, dental rinsers, etc.
  • the waterproof panel switch assembly mainly includes an outer shell part 1, a panel 4 and an inner shell part 2.
  • the waterproof panel assembly also includes switches 32 and 33 , and the switches 32 and 33 are usually installed on the circuit board 3 .
  • the outer shell part 1 and the inner shell part 2 have matching shapes.
  • the outer shell part 1 has a substantially cylindrical shape
  • the inner shell part 2 also has a substantially cylindrical shape
  • the outer diameter of the cylinder of the inner shell part 2 is equal to or slightly smaller than that of the cylinder of the outer shell part 1
  • the inner shell part 2 fits snugly inside the outer shell part 1, thereby forming a double-layer shell waterproof structure.
  • the outer shell part 1 and the inner shell part 2 are molded to form a single piece.
  • the circuit board 3 on which the switches 32 and 33 are mounted is disposed in the inner cavity of the inner shell 2 .
  • the cylindrical housing portion 1 is configured as a handle of the electric toothbrush.
  • the housing part 1 includes a housing body 12 and a hole 11 located on the housing body 12 . As shown in Figure 2, the panel 4 mates with the hole 11 in the housing part 1.
  • the hole 11 in the housing part 1 is formed as Oval, the two ends of the oblong longitudinal axis are semicircular.
  • the inner shell part 2 includes an inner shell body 21 , inner switch elastic parts 22 and 23 , inner switch pressure blocks 24 and 25 and an inner transparent part 26 .
  • the inner switch elastic portions 22 and 23 have a circular outer contour and are spaced apart from each other.
  • the inner transparent portion 26 is light-transmissible, and in the preferred embodiment, the inner transparent portion 26 is rectangular.
  • the inner switch pressure blocks 24 and 25 are respectively enveloped by the inner switch elastic parts 22 and 23 , that is to say, the inner switch pressure blocks 24 , 25 are at least partially surrounded by the switch elastic parts 22 , 23 and connected to each other, and the switch elastic parts 22 , 23 connect the inner switch pressure blocks 24 and 25 to the inner shell body 21, so that the inner switch pressure blocks 24 and 25 will be displaced with the elastic deformation of the elastic parts 22 and 23 after being stressed.
  • the inner switch pressure blocks 24 and 25 are located at approximately the middle position of the inner switch elastic portions 22 and 23, and the positions of the inner switch pressure blocks 24 and 25 are set to be aligned with the switches 32 and 33 below. .
  • two switches 32 and 33 are installed on the circuit board 3 at a distance, and a display screen 31 is provided between the two switches 32 and 33.
  • the display screen 31 is also installed on the circuit board 3. superior.
  • the switches 32 and 33 are aligned with the pressure blocks 24 and 25, while the position of the display screen 31 is substantially aligned with the inner transparent portion 26 on the inner housing portion 21.
  • the panel 4 mainly includes a panel body 41, panel elastic parts 42, 44 and panel pressing blocks 46, 47.
  • the outer contour of the panel body 41 corresponds to the inner contour shape of the hole 11 , and the panel body 41 can be completely installed in the hole 11 . In other alternative embodiments, the panel body 41 may also be partially mounted in the hole 11 .
  • the panel elastic parts 42 and 44 have a circular outer contour.
  • the circular outer contour of the floor panel elastic part 42 and 44 corresponds to the outer contour of the inner switch elastic parts 22 and 23.
  • the two panel elastic portions 42 and 44 are located at both ends of the panel body 41 at a distance.
  • the shortest distance between the two panel elastic parts 42 and 44 along the handle longitudinal axis L1 should be greater than the length of the display screen 31 along the handle longitudinal axis L1, and the distance between the inner switch elastic parts 22 and 23 along the handle longitudinal axis L1
  • the shortest distance in the direction is correspondingly larger than the length of the display screen 31 along the longitudinal axis L1 of the handle, so that the content on the display screen 31 accommodated inside will not be blocked by the elastic parts 22, 23, 42, 44.
  • the panel pressing blocks 46 and 47 are surrounded by the panel elastic parts 42 and 44.
  • the panel pressing blocks 46 and 47 are at least partially surrounded and connected to each other by the panel elastic parts 42 and 44, and the panel elastic parts 42 and 44 hold the panel pressing blocks together.
  • 46 and 47 are connected to the panel body 41, so that the panel pressing blocks 46 and 47 will be displaced as the elastic portions 42 and 44 are elastically deformed under force.
  • the panel pressing blocks 46 and 47 are enclosed in the approximate center position of the panel elastic parts 42 and 44.
  • the panel pressing blocks 46 and 47 are in contact with the panel itself. Body 41 is not connected.
  • the panel 4 also includes specific symbol portions 43 and 45 exposed by injection molding on the outside of the panel elastic portions 42 and 44.
  • the symbol portions 43 and 45 are different to indicate different operating functions.
  • the symbol portions 43 and 45 are integrally injection molded with the panel pressing blocks 46 and 47 , that is to say, the symbol portions 43 and 45 are part of the panel pressing blocks 46 and 47 .
  • the symbol portions 43 and 45 can also be independent from the panel clamps 46 and 47, and the conforming portions 43 and 45 are independently molded from the selected material on the outside of the panel elastic portions 42 and 44.
  • the elastic portion may be formed on the outer surfaces 42 and 44 by printing.
  • the panel body 41 and the panel elastic part 42 are made of different materials.
  • the panel body 41 and the panel pressing blocks 46 and 47 are made of a harder material than the material of the panel elastic part 42 .
  • the material of the panel elastic part 42 is more elastic than the materials of the panel body 41 and the panel pressing blocks 46 and 47 .
  • the material of the panel body 41 is usually ABS, PC, PP, organic glass, PETG and other plastics.
  • the material of the panel elastic parts 42 and 44 is usually elastic TPE, TPR, polyamide, etc.
  • the materials of the panel pressing blocks 46 and 47, the switch symbol part 43, and the panel switch symbol part 45 are usually plastics such as ABS, PC, PP, organic glass, and PETG.
  • the panel body 41 is made of a light-transmitting material, so that the display screen 31 is visible from the outside.
  • the panel elastic parts 42, 44 and the inner switch elastic parts 22, 23 are respectively aligned in the pressing direction.
  • the inner switch pressing blocks 24, 25 are aligned with the panel pressing parts.
  • the blocks 46 and 47 are respectively in contact, and when the elastic parts 42 and 44 on the panel 4 do not receive any force, there is no contact between the panel elastic parts 42 and 44 and the inner switch elastic parts 22 and 23, but a gap is formed. 48, 49.
  • the size of gaps 48 and 49 is preferably set between 0.5 mm and 1 mm.
  • the surface of the pressure blocks 46 and 47 protrudes so that the inner surfaces of the panel pressure blocks 46 and 47 are adjacent to or in contact with the outer surfaces of the inner switch pressure blocks 24 and 25.
  • the inner switch pressure blocks 24 and 25 The outer surface may be flush with the outer surface of inner switch elastic portions 42 and 44 .
  • the outside surfaces of inner switch pressure blocks 24 and 25 may be configured to project relative to the outside surface of inner switch elastic portions, while the inside surfaces of panel pressure blocks 46 and 47 may be configured to project relative to the outside surfaces of panel elastic portions 42 and 44 .
  • the inner surface is flush.
  • the inner switch pressure blocks 24 and 25 and the panel pressure blocks 46 and 47 each protrude relative to the respective resilient portions.
  • the inner switch pressure blocks 24, 25 and the The sum of the protrusion amounts of one panel pressing block 46 and 47 relative to the surface of the elastic part where they are located corresponds to the size of the gap between two adjacent elastic parts.
  • the panel 4 is fixed to the inner shell 2 .
  • the panel body 41 is bonded and fixed on the inner shell body 21 through the double-sided adhesive layer 5 .
  • a protruding rib 411 is integrally provided on the inner side of the panel body 41 toward the inner shell 2 .
  • the protruding rib 411 protrudes relative to the inner surface of the panel elastic portions 42 and 44 .
  • 411 is bonded or ultrasonically welded to the inner shell body 21 to fix the panel 4 relative to the inner shell part 2 .
  • the double-sided adhesive layer 5 may have a shape corresponding to the convex rib 411 .
  • the double-sided adhesive layer 5 has an outer contour corresponding to the panel, and two circular holes corresponding to the elastic parts 22 and 23 and a rectangular hole corresponding to the transparent part 26 are formed therein, and the ribs 411 on the panel body are formed therein. Has a consistent shape.
  • the panel 4 may also be fixed together with the inner shell body 21 through an ultrasonic welding process.
  • the switch assembly includes panel elastic parts 42, 44 and inner switch elastic parts 22, 23, and a gap 48 is provided between the panel elastic part 42 and the inner switch elastic part 22, the panel elastic part 44 and A gap 49 is provided between the inner switch elastic parts 23 , more specifically, at least in the area facing the switch 33 , and a gap 48 is provided between the panel elastic part 42 and the inner switch elastic part 22 , at least in the area facing the switch 32 , a gap 49 is provided between the panel elastic part 44 and the inner switch elastic part 23, which advantageously reduces the thickness of each layered elastic part in the panel elastic parts 42, 44 and the inner switch elastic parts 23, 22.
  • the pressing force on the two layers of elastic material superimposed with a gap is greater than that of a single layer of thick elastic material.
  • the pressing force is significantly smaller, thereby reducing the user's pressing force when operating the switch.
  • the panel body 41, the inner shell body 21, the outer shell body 12, the panel pressure blocks 46, 47 and the inner switch pressure blocks 25, 24 can be made of one or more relatively hard materials. The material will not deform significantly under normal hand-held operation.
  • the panel elastic portion 42, 44 and inner switch elastic portions 22 and 23 are made of materials that will elastically deform under normal hand-held operation.
  • the elastic material of the inner switch elastic parts 22 and 23 is usually elastic TPE, TPR, polyamide, etc.
  • the relatively hard materials of the inner shell body 21 and the outer shell body 12 are usually plastics such as ABS, PC, and organic glass.
  • the inner shell body 21, the inner switch elastic parts 22, 23 and the inner switch pressing blocks 25, 24 are formed into an integral part by injection molding.
  • the inner shell body 21 is first injection molded, and then based on the formed inner shell body 21, the inner switch elastic part 22, the inner switch elastic part 23, and the inner transparent part 26 are further injection molded.
  • the inner switch pressure blocks 24 and 25 and the inner shell body 21 are made of the same material and formed into one body in one injection molding step.
  • the inner switch pressure blocks 24 and 25 can be considered It is a part integrally connected to the inner shell body 21 and can move relative to the remaining part of the inner shell body 21 as the elastic parts 22 and 23 elastically deform.
  • the outer shell part 1 is injection molded on the basis of the inner shell part 2, so that the inner shell part 2 and the outer shell part 1 form an integral body.
  • the panel 4 also forms an integral watertight component through the injection molding process.
  • the panel pressing blocks 46 and 47 and the panel body 41 can be injection molded using the same or different harder materials first, and the panel pressing blocks 46 and 47 form symbol portions 43 and 45 for marking on the outside of the panel.
  • the panel pressing blocks 46 and 47, the symbols 43 and 45, and the panel body 41 are not connected to each other.
  • the panel pressing blocks 46 and 47 protrude relative to the inner surfaces of the panel elastic portions 42 and 44 inside the housing part 1.
  • the panel pressing blocks 46 and 47 are injected into corresponding blind holes in the mold to form.
  • the panel pressure blocks 46 and 47 are always fixed in the corresponding blind holes in the mold, thereby ensuring that the panel pressure blocks 46 and 47 and the symbol parts 43 and 45 will not be impacted and deformed by the injection pressure. Distortion shift.
  • the panel pressing blocks 46 and 47 protrude relative to the inner surfaces of the panel elastic parts 42 and 44 inside the housing part 1 that the panel pressing blocks 46 and 47 are always fixed in the mold when the panel elastic parts 42 and 44 are injection molded.
  • the corresponding blind holes make the injection molding process of the panel more reliable and stable.
  • the material of the panel elastic portions 42 and 44 is injected into the formed panel pressing blocks 46 and 47 and the panel body 41, so that the panel elastic portions 42 and 44 envelop the panel pressing blocks 47 and 46 and become integrated with the panel body 41.
  • the panel switch assembly according to the present invention has excellent water tightness. Since the display screen 31 is installed on the circuit board 3 and is located within the inner shell 2 , and the inner shell 2 is made into an integral part by injection molding, external fluid cannot enter the inner shell 2 through the panel hole 11 of the outer shell 1 , therefore, the fluid cannot contact the display screen located inside, thereby protecting the normal operation of the display screen. At the same time, the actuation line The elastic button portions of the switches 32 and 33 on the board 3 are formed by superimposing two layers of thin elastic portions with gaps. Therefore, the pressing force required is significantly reduced compared to a single layer of thick elastic material.
  • the outer shell part 1 is formed into a cylindrical or cylindrical handle part so as to have an arc profile. Since the inner shell part 2 forms an integrated waterproof structure in the area covering the switch display screen, The connection between the panel 4 and the outer shell part 1 is not so demanding on waterproofing. Even if there is a gap, the inner shell part 2 can reliably ensure the waterproof effect of the handle.
  • the inner shell part 2 forms an integrated waterproof structure in the area covering the switch display screen, which means that fluid cannot enter the interior of the inner shell part 2 from the hole 11 on the outer shell body 12 .
  • the number of switches is not limited to 2, but may be one or more, the inner shell part and the outer shell part are not limited to cylindrical shapes, and
  • the shape of the panel can vary depending on the shape of the housing portion and the shape and arrangement of the display screen and switches. Since many modifications and changes will readily occur to those skilled in the art, it is not intended to limit the invention to the precise construction and operation shown and described herein. Although preferred embodiments have been described, details may be changed without departing from the scope of the invention as defined by the claims.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Push-Button Switches (AREA)

Abstract

本发明提供了一种防水面板开关组件。该组件包括：包括外壳本体和位于上孔的外壳部；包括面板本体和位置其上的面板弹性部的面板；布置在外壳部之内的内壳部，内壳部包括内壳本体和与内壳本体固定的内开关弹性部，以及布置在内壳部之内开关，其中，面板还包括由面板弹性部包络的面板压块，内壳部还包括由所述内开关弹性部包络的内开关压块，所述面板压块和所述内开关压块对齐，所述内开关压块和所述开关对齐，其中，在所述面板的所述面板弹性部不受按压力作用的情况下，所述面板弹性部和所述内开关弹性部之间存在间隙。在确保面板开关组件防水性能的前提下，本发明开关所需的按压力显著降低，用户操作开关的舒适感提升。

Description

防水面板开关组件 技术领域
本发明涉及个人护理产品的技术领域，尤其涉及用于个人护理产品的防水面板开关组件。
背景技术
随着生活水平提高，对于个人护理产品状态和个人护理产品的信息，可视化的要求越来越高，即对人机交互要求越来越高。为了提高产品人机交互水平，个人护理产品中加入显示屏，所述显示屏用来显示个人护理产品的各种状态如电池容量、工作模式、压力范围，以及加入一些欢迎界面和使用报告等等内容，大大丰富了产品的人机交互内容。随着显示屏的加入，需要对产品增加一些确保防水密封的可靠结构，以保证显示屏及相关电路能够长时间的安全可靠的使用。
为了配合显示屏的使用，个人护理产品中的开关组件中包括了安装在显示屏上方的面板，面板是透明的，同时面板上还安装有由弹性部制成的开关按压部。为了确保水不会从外界渗入面板内部，构成开关按压部的弹性部与面板注塑模制在一起，并具有一定的厚度，以确保其的耐用性和防水效果。然而，较厚的开关按压部对于按压力的传送是不利的，不仅需要的按压力会倍增，而且按压力的传递不那么精准，操作手感不适。然而，如果将开关按压部的厚度减薄，开关按压部的反复操作容易造成弹性部相对面板本体剥离，这会导致使用时漏水，严重影响产品的使用寿命和使用安全。
另一方面，对于电动牙刷之类产品，面板被安装在通常为圆柱形的手柄上，面板和安装面板的手柄部分通常具有弧形轮廓，要使弧形轮廓的面板和手柄部分形成耐用的密封连接存在难度。例如带有弧度的曲面会造成面板和外壳部之间超声焊接的不可靠，面板和手柄部两者之间可能会存在间隙，存在漏水的安全隐患。
因此，需要对现有的防水面板开关组件作出改进，在确保水密可靠性的同 时，改善用户的操作手感。
发明内容
为克服现有技术中防水面板开关组件存在的问题，本发明提供了一种用于个人护理用具的防水面板开关组件，该组件包括：外壳部，所述外壳部包括外壳本体和位于外壳本体上的孔；面板，所述面板包括面板本体和与面板本体固定的面板弹性部，并且所述面板配合在所述孔中，内壳部，所述内壳部布置在所述外壳部之内，并且包括内壳本体和与所述内壳本体固定的内开关弹性部，以及开关，所述开关布置在所述内壳部之内，所述开关布置在所述内开关弹性部的下方，其中，所述面板还包括由所述面板弹性部包络的面板压块，所述面板弹性部连接所述面板压块和所述面板本体，所述内壳部还包括由所述内开关弹性部包络的内开关压块，所述内开关弹性部连接所述内开关压块的和所述内壳本体，所述面板压块和所述内开关压块对齐，所述内开关压块和所述开关对齐，其中在所述面板的所述面板弹性部不受按压力作用的情况下，所述面板弹性部和所述内开关弹性部之间存在间隙。
根据本发明的一个方面，在所述面板的所述面板弹性部不受力作用的情况下，所述面板压块和所述内开关压块之间的距离小于0.5mm，或者所述面板压块和所述内开关压块抵接。
根据本发明的另一个方面，面板压块相对所述面板弹性部的内侧表面突出，和/或所述内开关压块相对于所述内开关弹性部的外侧表面突出。
根据本发明的另一个方面，所述面板粘合或超声波焊接到所述内壳部上。
根据本发明的又一个方面，所述面板压块和内开关压块由第一材料制成，所述面板弹性部和所述内开关弹性部由不同于所述第一材料的有弹性的第二材料制成，在操作开关的力的作用下，所述第一材料基本不变形。
根据本发明的又一个方面，所述面板压块在所述面板的外侧形成标示符号，所述面板压块和所述面板本体之间不相连。较佳地，内开关压块附连到所述内壳本体。
根据本发明的又一个方面，所述组件还包括线路板，所述开关安装在所述线路板上，所述线路板布置在所述内壳部中。
根据本发明的又一个方面，所述线路板上还安装有显示屏，在所述内壳部在对应所述显示屏的位置进一步包括内透明部，所述面板本体由透明材料制 成。
根据本发明的又一个方面，内壳部进一步包括内透明部，所述内透明部与所述内壳本体一体注塑成形，所述内壳本体、所述内开关弹性部、所述内开关压块和所述内透明部注塑模制形成在对应外壳部的所述孔的位置防水密封的整体件。
根据本发明的又一个方面，所述面板本体、所述面板弹性部和所述面板压块注塑模制形成水密的整体件。
根据本发明的面板开关组件同时具备优良的水密可靠性和开关可操作性。由于显示屏位于内壳部之内，同时，内壳部通过注塑成为一个整体件，外部流体不能通过外壳部面板孔进入内，从而流体不能接触位于内部的显示屏，以保护显示屏的正常工作。与此同时，致动开关的弹性部由两层较薄的弹性层带有间隙地叠加而形成，因此，相比传统的单层厚弹性材料的开关部，本发明开关所需的按压力显著降低，用户操作开关的舒适感提升。
附图说明
将基于附图所示的示例性实施例对本发明作进一步阐述。示例性实施例通过非限制性说明给出。应当注意的是，附图仅是以非限制性示例的方式给出的本发明实施例的示意性表示。
图1示出了根据本发明较佳实施例的防水面板开关组件的爆炸图。
图2示出了根据本发明较佳实施例的防水面板开关组件安装状态下的立体图。
图3示出了根据本发明较佳实施例的面板的局部剖视立体图。
图4示出了根据本发明较佳实施例的内壳部以及线路板的立体图。
图5示出了根据本发明较佳实施例的面板开关组件的剖示立体图。
附图标记，
1外壳部
11孔
12外壳本体
2内壳部
21内壳本体
22、23内开关弹性部
24、25内开关压块
26内透明部
3为线路板
31显示屏
32、33开关
4面板
41面板本体
42、44面板弹性部
43、45面板开关符号
46、47面板压块
48间隙
49间隙
411凸肋
5双面胶层
L1为手柄纵轴线
具体实施方式
下面，参照附图对本发明的防水面板开关组件的实施方式进行说明。
图1示出了根据本发明较佳实施例的防水面板开关组件的分解状态下的立体图，而图2示出了该防水面板开关组件的组合状态下的立体图。作为示例，该防水面板开关组件可用在电动牙刷中。该组件也可以用于其他对开关面板组件有防水要求的个人护理用具，例如电动剃须刀、冲牙器等。
如图1所示，防水面板开关组件主要包括外壳部1、面板4和内壳部2。防水面板组件还包括开关32和33，开关32、33通常安装在线路板3上。
外壳部1和内壳部2具有相匹配的形状。在较佳实施例中，外壳部1具有大致圆柱体的形状，内壳部2也具有大致圆柱体的形状，内壳部2的圆柱体的外部直径等于或稍小于外壳部1的圆柱体的内部直径，内壳部2贴合地匹配在外壳部1之内，从而形成双层壳体的防水结构。通常，外壳部1和内壳部2模制形成整体件。安装有开关32、33的线路板3设置在内壳部2的内腔中。在防水面板开关组件用于电动牙刷的实例中，圆柱形的外壳部1构造成了电动牙刷的手柄。
外壳部1包括外壳本体12和位于外壳本体12上的孔11。如图2所示，面板4与外壳部1上的孔11匹配。在较佳实施例中，外壳部1上的孔11形成为 长圆形，长圆形的纵向轴线方向的两个端部呈半圆形。
内壳部2包括内壳本体21、内开关弹性部22、23、内开关压块24、25和内透明部26。在较佳实施例中，内开关弹性部22和23具有圆形的外轮廓，并且相互隔开一段距离。内透明部26是可透光的，在较佳实施例中，内透明部26呈矩形。
内开关压块24和25分别被内开关弹性部22和23包络，也就是说，内开关压块24、25被开关弹性部22、23至少部分地包围并相互连接，并且开关弹性部22、23将内开关压块24、25连到内壳本体21，从而内开关压块24、25将随着弹性部22、23受力作用后的弹性变形而移位。较佳地，如图1所示，内开关压块24和25位于内开关弹性部22和23的大致中间位置，内开关压块24和25的位置设定成与下方的开关32和33对齐。
在较佳实施例中，两个开关32和33隔开一段距离安装在线路板3上，并且在两个开关32和33之间设置有显示屏31，显示屏31同样也安装在线路板3上。开关32和33与压块24和25对齐，而显示屏31的位置与内壳部21上的内透明部26基本对齐。
面板4主要包括面板本体41、面板弹性部42、44和面板压块46、47。在较佳实施例中，面板本体41的外轮廓与孔11的内轮廓形状对应，面板本体41能够整个地安装在孔11中。在其他替代实施方式中，面板本体41也可以部分地安装在孔11中。
面板弹性部42、44具有圆形的外轮廓，较佳地面板弹性部面板弹性部42、44的圆形外轮廓与内开关弹性部22、23的外轮廓相对应。两个面板弹性部42和44隔开一段距离位于面板本体41的两端。两个面板弹性部42和44之间沿着手柄纵轴线L1方向的最短距离应大于显示屏31沿手柄纵向轴线L1方向的长度，并且内开关弹性部22、23之间沿着手柄纵轴线L1方向的最短距离相应地也大于显示屏31沿手柄纵向轴线L1方向的长度，这样容纳在内部的显示屏31上的内容不会被各弹性部22、23、42、44遮挡。
面板压块46和47被面板弹性部42和44包络，换言之，面板压块46和47被面板弹性部42和44至少部分地包围并相互连接，并且面板弹性部42和44将面板压块46和47连到面板本体41，从而面板压块46和47将随着弹性部42和44受力作用后的弹性变形而移位。较佳地，面板压块46和47被包络在面板弹性部42和44的大致中心位置，较佳地，面板压块46、47与面板本 体41不相连。
面板4还包括在面板弹性部42和44的外侧注塑露出特定的符号部43、45，通常两个符号部43、45不同以标示不同的操作功能。在较佳实施例中，符号部43和45是与面板压块46和47一体注塑而成的，也就是说，符号部43、45是面板压块46和47的一部分。在其他替代实施方式中，符号部43和45也可以相对面板压块46和47是独立的，符合部43和45由选定的材料独立地模制在面板弹性部42和44的外侧上，或者通过印刷形成弹性部的外表面42和44上。
面板本体41和面板弹性部42由不同的材料制作而成，面板本体41和面板压块46、47由相对于面板弹性部42的材料更硬的材料制成。面板弹性部42的材料相比面板本体41和面板压块46和47的材料更具弹性。
面板本体41材料通常为ABS、PC、PP、有机玻璃、PETG等塑料。面板弹性部42、44材料通常为具有弹性的TPE、TPR、聚酰胺等。面板压块46、47、开关符号部43、面板开关符号部45材料通常为ABS、PC、PP、有机玻璃、PETG等塑料。当线路板3上设置有显示屏31的情况下，面板本体41由透光材料构成，使得显示屏31从外部可见。
当面板4、外壳部1和内壳部2安装在一起时，面板弹性部42、44与内开关弹性部22、23在按压方向分别对齐，特别地，内开关压块24、25与面板压块46、47分别抵接，并且在面板4上的弹性部42、44未受到作用力的情况下，面板弹性部42、44与内开关弹性部22、23之间不接触，而是形成间隙48、49。间隙48和49的尺寸较佳地设定在0.5mm到1mm之间。
对应于在面板弹性部42、44和内开关弹性部22、23之间形成的间隙，如图5所示，面板压块46和47在外壳部1的内部相对面板弹性部42和44的内侧表面突出，压块46、47的突出量使得面板压块46和47的内侧表面与内开关压块24、25的外侧表面邻近或接触，在这种情况下，内开关压块24、25的外侧表面可以与内开关弹性部42和44的外侧表面齐平。
在替代实施例中，也可以将内开关压块24和25的外侧表面构造成相对内开关弹性部的外侧表面凸出，而面板压块46和47的内侧表面相对面板弹性部42和44的内侧表面齐平。或者，在又一替代实施例中，内开关压块24和25和面板压块46和47均相对于各自所在的弹性部突出。
在以上各种压块的实施例中，可以理解，内开关压块24、25和与之相接触 的一个面板压块46、47的相对于各自所在的弹性部的表面的突出量之和对应于相邻的两个弹性部之间的间隙的大小。
在较佳实施例中，面板4固定在内壳部2上。较佳地，面板本体41通过双面胶层5粘结固定在内壳本体21上。
较佳地，如图3所示，面板本体41的朝着内壳部2的内侧上一体地设有凸肋411，该凸肋411相对面板弹性部42、44的内侧表面突出，通过凸肋411粘合或超声波焊接到内壳本体21上来实现面板4相对内壳部2的固定。在这种情况下，双面胶层5可以具有与凸肋411对应的形状。例如如图5所示，双面胶层5具有面板对应的外轮廓，并且其中形成两个对应弹性部22和23的圆形孔和对应透明件26的矩形孔，面板本体上的凸肋411具有与之一致的形状。
在替代实施方式中，面板4也可以通过超声波焊接工艺与内壳本体21固定到一起。
在上述较佳实施例中，由于开关组件包括面板弹性部42、44和内开关弹性部22、23，且面板弹性部42和内开关弹性部22之间设置有间隙48，面板弹性部44和内开关弹性部23之间设置有间隙49，更具体地，至少在面对开关33的区域，面板弹性部42和内开关弹性部22之间设置有间隙48，至少在面对开关32的区域，面板弹性部44和内开关弹性部23之间设置有间隙49，这样，有利地减薄了面板弹性部42、44和内开关弹性部23、22中各层状弹性部的厚度。由于传统的厚的单层的弹性材料改为带有间隙地叠加的两层薄的弹性材料，在相同位移下，两层有间隙叠加的弹性材料上的按压力对比单层厚的弹性材料上的按压力显著要小，从而降低了用户操作开关按压力。
另一方面，面板压块46、47和内开关压块24、25在被按压状态下，这些压块46、47、24、25本身变形很小几乎不变形，从而可以直接有效地将按压力传递到开关32、33。通常，面板压块46、47和内开关压块25、24之间的间隔在未施加力的情况下小于0.5mm，优选地，面板压块46、47分别触接内开关压块25、24但不使弹性部22、23、42、44产生变形。这将有利于施加于面板上符号部45、44的按压力有效地传递到开关32、33，从而使开关动作能够被可靠无误地执行，开关32、33的反应灵敏性得到保证。
在较佳实施例中，面板本体41、内壳本体21、外壳本体12以及面板压块46、47和内开关压块25、24可以由相对较硬的一种或多种材料制成，这些材料在常规手持操作的情况下不会发生明显的变形。相对而言，面板弹性部42、 44和内开关弹性部22和23由在常规手持操作下会弹性变形的材料制成。
内开关弹性部22和23的具有弹性的材料通常为具有弹性的TPE、TPR、聚酰胺等。内壳本体21、外壳本体12的相对较硬材料通常为ABS、PC、有机玻璃等塑料。
在根据较佳实施例的防水面板组件制造过程中，优选地，内壳本体21、内开关弹性部22、23和内开关压块25、24通过注塑成形的方式形成一个整体部件。通常，先注塑成形内壳本体21，接着在已形成的内壳本体21的基础上再进一步注塑成形内开关弹性部22、内开关弹性部23、内透明部26。较佳地，如图5所示，内开关压块24、25和内壳本体21由同一种材料在一个注塑步骤中形成为一体，在这种情况下，可以认为内开关压块24、25是一体连接到内壳本体21的部分，该部分能相对于内壳本体21的余下部分随着弹性部22和23弹性变形而移动。当内壳部2注塑完成之后，在内壳部2的基础上注塑成形外壳部1，使得内壳部2和外壳部1形成一个整体。
另一方面，如图3、图5所示，面板4也通过注塑工艺构成一个整体式的水密部件。较佳地，可以先使用相同或者不同的较硬的材料注塑面板压块46、47以及面板本体41，同时面板压块46和47在面板外侧形成构成用于标示的符号部43和45。
面板压块46、47、符号43、45部和面板本体41之间不相连接，面板压块46和47在外壳部1的内部相对面板弹性部42和44的内侧表面突出。在注塑过程中，面板压块46、47被注塑入模具中对应的盲孔而成形。在注塑面板弹性部42、44时，面板压块46、47始终被固定在模具中对应的盲孔中，从而保证面板压块46、47、符号部43、45不会被注塑压力冲击变形，歪曲移位。正是因为，面板压块46和47在外壳部1的内部相对面板弹性部42和44的内侧表面突出，在注塑面板弹性部42、44时，面板压块46、47始终被固定在模具中对应的盲孔中，使面板的注塑工艺更加可靠和稳定。再对已成型的面板压块46、47、面板本体41注塑面板弹性部42和44的材料，使得面板弹性部42和44包络面板压块47、46并与面板本体41形成一体。
根据本发明的面板开关组件具有优良的水密性。由于显示屏31安装在线路板3上，并且位于内壳部2之内，同时，内壳部2通过注塑成为一个整体件，外部流体不能通过外壳部1的面板孔11进入内壳体2内，因此，流体不能接触位于内部的显示屏，从而能够保护显示屏的正常工作。与此同时，致动线路 板3上的开关32、33的弹性按钮部由分别由两层较薄的弹性部带有间隙地叠加而形成，因此，相比单层厚的弹性材料所需的按压力显著降低。
对于电动牙刷之类的应用，外壳部1形成为圆柱形或圆筒形的手柄部，从而具有弧形轮廓，由于内壳部2在覆盖开关显示屏的区域形成一体式的防水结构，因此，面板4和外壳部1之间的连接对于防水要求不那么高，即使出现间隙，内壳部2也能可靠地保证手柄的防水效果。所述的内壳部2在覆盖开关显示屏的区域形成一体式的防水结构，是指流体不能从外壳本体12上的孔11进入内壳部2的内部。以上的描述被认为仅是对本发明原理的说明，还可以有其他变化形式，例如，开关的数量不限于2个，可以一个也可以更多个，内壳部和外壳部不限于圆柱形，以及面板的形状可以根据外壳部的形状以及显示屏及开关的形状布置方式变化。由于本技术领域内的技术人员将会容易地想到许多种修改和改变，所以并不意图将本发明限制在文中所示和所描述的精确的构造和操作。尽管已经描述了优选的实施例，但细节可以改变，这不脱离由权利要求书定义的本发明的范围。

Claims (10)

  1. 一种用于个人护理用具的防水面板开关组件，包括：
    外壳部(1)，所述外壳部包括外壳本体(12)和位于外壳本体上的孔(11)，
    面板(4)，所述面板包括面板本体(41)和与面板本体固定的面板弹性部(46、47)，并且所述面板配合在所述孔(11)中，
    内壳部(2)，所述内壳部布置在所述外壳部之内，并且包括内壳本体(21)和与所述内壳本体固定的内开关弹性部(22，23)，以及
    开关(32，33)，所述开关布置在所述内壳部之内，
    其特征在于，所述面板(4)还包括由所述面板弹性部(42、44)包络的面板压块(47，46)，所述面板弹性部连接所述面板压块和所述面板本体，
    所述内壳部(2)还包括由所述内开关弹性部(22，23)包络的内开关压块(24，25)，所述内开关弹性部连接所述内开关压块的和所述内壳本体，
    所述面板压块和所述内开关压块对齐，所述内开关压块和所述开关对齐，其中，在所述面板的所述面板弹性部不受按压力作用的情况下，所述面板弹性部和所述内开关弹性部之间存在间隙。
  2. 如权利要求1所述的防水面板开关组件，其特征在于，
    在所述面板(4)的所述面板弹性部(42、44)不受力作用的情况下，所述面板压块和所述内开关压块之间的距离小于0.5mm，或者所述面板压块和所述内开关压块抵接。
  3. 如权利要求1或2所述的防水面板开关组件，其特征在于，所述面板压块(46，47)相对所述面板弹性部(42、44)的内侧表面突出，和/或所述内开关压块(24，25)相对于所述内开关弹性部(22，23)的外侧表面突出。
  4. 如权利要求1所述的防水面板开关组件，其特征在于，所述面板(4)粘合或超声波焊接到所述内壳部的所述内壳本体(21)上。
  5. 如权利要求1所述的防水面板开关组件，其特征在于，所述面板压块和/或所述内开关压块由第一材料制成，所述面板弹性部和所述内开关弹性由不同 于所述第一材料的有弹性的第二材料制成，
    其中在操作开关的力的作用下，所述第一材料基本不变形。
  6. 如权利要求1所述的防水面板开关组件，其特征在于，所述面板压块(46，47)在所述面板的外侧形成标示符号，
    所述面板压块(46、47)和所述面板本体(41)之间不相连，和/或
    所述内开关压块附连到所述内壳本体。
  7. 如权利要求1所述的防水面板开关组件，其特征在于，所述组件还包括线路板(3)，所述开关(32，33)安装在所述线路板上，所述线路板布置在所述内壳部中。
  8. 如权利要求7所述的防水面板开关组件，其特征在于，所述线路板(3)上还安装有显示屏(31)，
    在所述内壳部(2)在对应所述显示屏的位置进一步包括内透明部(26)，所述面板本体由透明材料制成。
  9. 如权利要求1所述的防水面板开关组件，其特征在于，所述内壳部(2)进一步包括内透明部(26)，
    所述内透明部与所述内壳本体一体注塑成形，
    所述内壳本体、所述内开关弹性部、所述内开关压块和所述内透明部注塑模制形成在对应所述外壳部(1)的所述孔的位置防水密封的整体件。
  10. 如权利要求1所述的防水面板开关组件，其特征在于，所述面板本体、所述面板弹性部和所述面板压块注塑模制形成水密的整体件。
PCT/CN2023/092140 2022-06-09 2023-05-05 防水面板开关组件 WO2023236694A1 (zh)

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CN204991556U (zh) * 2015-09-28 2016-01-20 陈浩骏 一种密封按键
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