Waterproof button

Abstract

The utility model relates to the technical field of electric appliance control, and provides a waterproof button, which comprises a button shell, a protective contact part and a button cover, the button shell is provided with a mounting cavity, the first end of the button shell is provided with a first opening communicated with the mounting cavity, and the side surface of the first end of the button shell is provided with a flange extending outwards; the protective contact part is arranged at the first end of the button shell and is used for sealing the first opening; the first end of the button cover is arranged at the first end of the button shell in a covering mode, the second end of the button cover is provided with a lap joint table, and the flange is arranged on the lap joint table in a lap joint mode. According to the utility model, the flange of the button shell is inserted into the button cover and is stably lapped on the lapping table, so that a multi-sealing coating structure with the upper part covered, the side part surrounded and the bottom supported is formed, and the combination tightness between the button shell and the button cover is effectively improved; the protection contact part is arranged between the button cover and the button shell, so that the waterproof and dustproof capability of the first opening part is enhanced, and the protection level is further improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical control technology, and in particular to a waterproof button. Background Technology

[0002] Push-button switches, as a common type of control electrical appliance, are widely used in industrial control, mechanical equipment, and automation systems to manually issue start / stop or control signals. Their basic working principle is that when the operator presses the button, the internal operating mechanism moves the moving contact relative to the stationary contact, thus closing or opening the contacts and controlling the circuit's on / off state. A typical push-button switch mainly consists of a housing assembly, an operating mechanism, a contact system, and optional indicator lights.

[0003] In practical applications, especially in harsh environments such as humid, dusty, or open-air conditions, the protective performance of push-button switches directly affects their operational reliability and service life. Existing technologies typically employ an elastic sealing ring between the button cover and the housing to enhance the product's dust and water resistance.

[0004] However, traditional sealing structures often suffer from problems such as insufficient sealing interface fit, unstable sealing ring positioning, or uneven compression. This results in the sealing ring failing to form a continuous and stable sealing pressure after assembly, and gaps or stress relaxation easily appearing in local areas. This allows external contaminants such as moisture and dust to still seep into the switch through the mating gaps, causing contact oxidation, reduced insulation performance, or even short circuit faults, seriously affecting the reliability and electrical safety of the switch. Utility Model Content

[0005] This invention provides a waterproof button to solve the defect of poor sealing performance between the existing button cover and the housing.

[0006] This utility model provides a waterproof button, including:

[0007] A button housing, wherein the button housing is provided with a mounting cavity, a first opening communicating with the mounting cavity is provided at a first end of the button housing, and an outwardly extending flange is provided on the side of the first end of the button housing;

[0008] A protective contact component is disposed at the first end of the button housing, and the protective contact component is used to seal the first opening;

[0009] A button cover, the first end of which is disposed on the first end of the button housing, and the second end of which is provided with an overlapping platform, the flange being disposed on the overlapping platform.

[0010] According to the present invention, a waterproof button is provided, the protective contact component comprising:

[0011] A contact piece is disposed at the first opening;

[0012] A protective element is disposed at the first end of the button housing and located between the first end of the button cover and the contact piece.

[0013] According to the present invention, a waterproof button is provided with a primary waterproof layer on the surface of the protective component away from the contact piece.

[0014] According to the present invention, a waterproof button is provided with a secondary sealing element between the protective component and the button housing.

[0015] According to the waterproof button provided by this utility model, it further includes:

[0016] A triggering mechanism is disposed in the mounting cavity, and the triggering mechanism has a trigger end that passes through the first opening.

[0017] According to the present invention, a waterproof button is provided, the triggering mechanism comprising:

[0018] A button panel is disposed in the mounting cavity, the button panel is provided with the trigger end, and the end of the button panel away from the first opening is provided with a mounting part.

[0019] According to the present invention, a waterproof button is provided with a secondary waterproof layer on the outer surface of the button plate.

[0020] According to the waterproof button provided by this utility model, the triggering mechanism further includes:

[0021] A button base cover is sleeved on the mounting part. The button base cover is provided with a snap-fit ​​part, and the side wall of the button housing is provided with a slot that cooperates with the snap-fit ​​part.

[0022] According to the present invention, a waterproof button is provided in which the side of the overlapping platform abuts against the side of the button housing.

[0023] According to the present invention, a waterproof button is provided with a primary sealing element between the flange and the overlapping platform.

[0024] The waterproof button provided by this utility model features an outwardly extending flange at the first end of the button housing and a corresponding overlapping platform at the second end of the button cover. This allows the flange of the button housing to be inserted into the button cover and securely overlapped on the overlapping platform, forming a multi-layered sealing structure with upper coverage, side enclosure, and bottom support. This effectively improves the tightness of the connection between the button housing and the button cover, significantly enhances the overall sealing performance, and reliably prevents the intrusion of moisture and dust, ensuring the stable on / off function of the button switch in harsh environments such as humid, dusty, or outdoor conditions. In addition, a protective contact component is provided in the first opening area between the button cover and the button housing. Through the coordinated cooperation of the protective contact component with the button cover and the button housing, the waterproof and dustproof capabilities of the first opening area are strengthened, preventing moisture and dust from entering the installation cavity and further improving the overall sealing and protection level of the button switch.

[0025] The protective contact component of this invention includes a contact piece and a protective element. A primary waterproof layer is provided on the surface of the protective element away from the contact piece, which can effectively prevent water droplets, moisture, etc. from penetrating. A secondary sealing element is provided between the protective element and the button housing, which can further improve the sealing reliability of the button switch and improve the waterproof and dustproof effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 This is a structural schematic diagram of the waterproof button provided by this utility model.

[0028] Figure 2 This is an exploded view of the waterproof button provided by this utility model.

[0029] Figure 3 This is a cross-sectional structural diagram of the waterproof button provided by this utility model.

[0030] Figure 4 This is one of the cross-sectional structural schematic diagrams of the button cover provided by this utility model.

[0031] Figure 5 This is the second cross-sectional structural schematic diagram of the button cover provided by this utility model.

[0032] Figure 6 This is one of the cross-sectional structural schematic diagrams of the button housing provided by this utility model.

[0033] Figure 7This is the second cross-sectional structural schematic diagram of the button housing provided by this utility model.

[0034] Figure label:

[0035] 100. Button housing; 110. Flange; 120. Positioning plate; 140. Mounting cavity; 150. First opening; 160. Second opening; 170. Slot;

[0036] 200. Button cover; 210. Button part; 212. Protrusion; 220. Sealing side; 221. Overlapping platform;

[0037] 310. Contact piece; 320. Protective component;

[0038] 400. Button board; 410. Trigger terminal;

[0039] 500. Button base cover; 510. Clip-on part;

[0040] 600. Fasteners. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0042] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0044] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] The following is combined Figures 1-7 This invention describes a waterproof button.

[0047] An embodiment of the first aspect of this utility model provides a waterproof button, such as... Figure 1 As shown, the waterproof button includes a button housing 100, a button cover 200 covering the button housing 100, and a protective contact component disposed between the button housing 100 and the button cover 200.

[0048] Among them, such as Figures 3 to 7As shown, the button housing 100 has an internal mounting cavity 140, and the first end of the button housing 100 has a first opening 150 communicating with the mounting cavity 140. The side of the first end of the button housing 100 has an outwardly extending flange 110. A protective contact component is disposed at the first end of the button housing 100 and is used to seal the first opening 150. The first end of the button cover 200 is disposed on the first end of the button housing 100, and the second end of the button cover 200 has an overlapping platform 221, on which the flange 110 overlaps.

[0049] Understandably, the button housing 100 has an internal mounting cavity 140 to accommodate the triggering mechanism. The first end of the button housing 100 has a first opening 150 communicating with the mounting cavity 140 to facilitate pressing and electrical connection. The first end (upper end) of the button housing 100 has a flange 110 extending outwards in a horizontal direction. The first end (upper end) of the button cover 200 covers the upper end of the button housing 100, protecting the internal structure of the button housing 100. Simultaneously, the second end (lower end) of the button cover 200 has an overlapping platform 221, which mates with the flange 110 on the button housing 100, sealingly overlapping the flange 110 onto the overlapping platform 221 to form an overlapping sealing structure. This overlapping structural design not only enhances the overall structural stability of the button but also creates a sealing path at the joint, effectively preventing the intrusion of external moisture and dust, thereby improving the button's waterproof and dustproof performance. The protective contact component is located at the first end of the button housing 100 and covers the first opening. It not only serves to conduct electricity but also has a sealing function, effectively preventing moisture and dust from entering the mounting cavity from the opening.

[0050] It should be noted that the flange 110 of the button housing 100 extends into the interior of the button cover 200 and overlaps with the overlapping platform 221 at the bottom of the button cover 200, forming a tight connection structure. The button cover 200 covers the first end of the button housing 100 from above, while its inner sidewall wraps around the outer periphery of the flange 110, achieving a side seal. The overlapping platform 221 at the bottom supports the flange 110, completing the lower sealing support. In this way, the button cover 200 forms a sealed enclosure with the button housing 100 at the top, sides, and bottom, significantly increasing the sealing contact area and the complexity of the sealing path, effectively blocking the penetration channels of moisture and dust, thereby improving the overall sealing performance between the button housing 100 and the button cover 200, and enhancing the button's protection and reliability in harsh environments such as humid and dusty conditions. Furthermore, based on the sealing of the upper end of the button housing 100 by the button cover 200, the inside of the button housing 100 is further protected by the protective contact component covering the first opening 150 of the button housing 100. Thus, the mechanical seal structure of the flange 110 and the overlapping platform 221, together with the protective contact component, constitute a multi-level protection system, further enhancing the overall sealing protection level of the button switch.

[0051] It should be noted that even if the mechanical seal between the flange 110 of the button housing 100 and the overlapping platform 221 of the button cover 200 fails due to long-term use, assembly deviation, or environmental stress, the protective contact component can still independently perform its sealing function. This protective contact component covers the first opening 150 of the button housing 100, directly preventing moisture, dust, and other contaminants from intruding into the mounting cavity 140, forming a crucial protective barrier. Therefore, even when the sealing performance of the external structure deteriorates, the protective contact component, as an inner seal, effectively maintains the protection of the internal electrical components of the button housing 100, preventing short circuits, oxidation, or poor contact caused by foreign objects entering, significantly improving the sealing protection level of the push-button switch under harsh operating conditions and its long-term stability.

[0052] The waterproof button provided in this embodiment of the utility model has an outwardly extending flange 110 at the first end of the button housing 100 and a corresponding overlapping platform 221 at the second end of the button cover 200. The flange 110 of the button housing 100 is inserted into the button cover 200 and firmly overlaps the overlapping platform 221, thereby forming a multi-layer sealing and covering structure with upper coverage, side enclosure, and bottom support. This effectively improves the tightness of the connection between the button housing 100 and the button cover 200, significantly enhances the overall sealing performance, and can reliably block the intrusion of water vapor and dust, ensuring the stable on / off function of the button switch in harsh environments such as humid, dusty, or outdoor environments. In addition, a protective contact component is provided in the first opening 150 area between the button cover 200 and the button housing 100. Through the cooperative cooperation of the protective contact component with the button cover 200 and the button housing 100, the waterproof and dustproof capabilities of the first opening are strengthened, preventing water vapor and dust from entering the mounting cavity 140, and further improving the overall sealing and protection level of the button switch.

[0053] In one embodiment of this utility model, such as Figures 3 to 6 As shown, the button cover 200 includes a button portion 210 and a sealing side portion 220. The button portion 210 is disposed above the first end of the button housing 100. The sealing side portion 220 has a hollow structure. The first end of the sealing side portion 220 is connected to the periphery of the button portion 210. The second end of the sealing side portion 220 has an inwardly extending protrusion on its side, which forms an overlapping platform 221.

[0054] It is understood that the button cover 200 includes a button portion 210 at the top and a sealing side portion 220 connected thereto. The button portion 210 is disposed above the first end of the button housing 100 and is used to cover and protect the internal structure of the button. The sealing side portion 220 is a hollow annular structure, with its upper end connected to the periphery of the button portion 210 and extending downward along the axial direction, covering the outer side of the flange 110 to form lateral protection. A protrusion protruding inward in the horizontal direction is provided on the inner surface of the lower end of the sealing side portion 220. This protrusion extends in the circumferential direction to form a stepped overlapping platform 221. When the button cover 200 is assembled to the button housing 100, the flange 110 at the end of the button housing 100 extends into the inner cavity of the sealing side portion 220 and overlaps the overlapping platform 221 to achieve axial and radial limiting fit.

[0055] Furthermore, such as Figures 3 to 6 As shown, a positioning plate 120 is provided on the side of the flange 110 away from the overlapping platform 221, and the positioning plate 120 abuts against the button part 210.

[0056] Understandably, a positioning plate 120 is provided on the upper surface of the flange 110, and the positioning plate 120 extends upward. When the button cover 200 is assembled in place, the upper end face of the positioning plate 120 abuts against the lower surface of the button part 210, forming an axial limiting fit.

[0057] It should be noted that the abutting fit between the positioning plate 120 and the button part 210 can effectively limit the excessive pressing or misalignment of the button cover 200 during installation, ensuring an accurate and stable overlapping fit between the flange 110 and the overlapping platform 221. At the same time, the surface contact between the positioning plate 120 and the button part 210 can further enhance the sealing effect of the connection, reduce loosening caused by vibration or external force, improve the overall structural stability and sealing reliability, and thus better protect the protection performance of the button switch during long-term use.

[0058] In one embodiment of the present invention, the side of the mounting platform 221 abuts against the side of the button housing 100.

[0059] Understandably, when the flange 110 of the button housing 100 extends into the button cover 200 and overlaps the lap platform 221 at the second end of the sealing side 220, the sidewall of the flange 110 is tightly fitted with the inner sidewall of the lap platform 221. Simultaneously, the end face of the lap platform 221 supports the bottom surface of the flange 110, forming axial support. Furthermore, the lap platform 221 is tightly fitted with the outer surface of the button housing 100 to eliminate any possible gaps or misalignments at the joint, effectively blocking the path of moisture and dust intrusion along radial gaps, further improving sealing performance.

[0060] In one embodiment of the present invention, a primary seal (not shown in the figure) is provided between the flange 110 and the overlapping platform 221.

[0061] Understandably, a primary seal is provided between the flange 110 and the overlap 221. Specifically, this primary seal is an elastic sealing ring (such as an O-ring, rectangular ring, etc.), installed on the end face of the flange 110, the pressure-bearing surface of the overlap 221, or in the annular groove between the two. When the button cover 200 and the button housing 100 are assembled, the flange 110 presses against the overlap 221, causing the primary seal to be axially compressed and producing uniform elastic deformation. This forms a reliable sealing barrier between the contact interface of the flange 110 and the overlap 221, effectively preventing water vapor, dust, and other contaminants from entering the interior from the joint between the button cover 200 and the button housing 100, significantly improving the waterproof and dustproof rating of the button switch.

[0062] In one embodiment of this utility model, such as Figures 3 to 5 As shown, the first end of the button cover 200 is provided with a protrusion 212 that protrudes toward the first end of the button housing 100.

[0063] It is understood that the first end of the button cover 200 is provided with a protrusion 212 that protrudes downward toward the first end of the button housing 100. The protrusion 212 is used to transmit the pressing force during the pressing operation. When the user presses the button cover 200, the pressing force is transmitted through the button cover 200 to the protective contact component, causing it to undergo elastic deformation and conduct downward, making electrical contact with the triggering mechanism inside the button housing 100, thereby triggering the switch signal.

[0064] In one embodiment of this utility model, such as Figure 2 and Figure 3 As shown, the protective contact component includes a contact piece 310 and a protective element 320. The contact piece 310 is disposed at the first opening 150, and the protective element 320 is disposed at the first end of the button housing 100 and located between the first end of the button cover 200 and the contact piece 310.

[0065] Understandably, the contact piece 310 (such as a dome switch) is located at the first opening 150 to connect with the internal circuitry when pressed. The protective element 320 is located between the inner side of the first end of the button cover 200 and the contact piece 310, covering the top of the contact piece 310. This prevents moisture and dust from directly entering the mounting cavity 140 from above the first opening 150, and also buffers the pressing pressure, preventing foreign objects from directly contacting or damaging the contact piece 310. The protective element 320 can be made of materials such as elastic silicone or insulating sealing film, combining sealing and protection functions.

[0066] Optionally, the surface of the protective element 320 away from the contact piece 310 is provided with a primary waterproof layer.

[0067] Understandably, the protective element 320 is located away from the surface of the contact piece 310, and the primary waterproof layer is located on the upper surface of the protective element 320, i.e., the side facing the inside of the button cover 200; of course, the primary waterproof layer can also be provided on the entire surface of the protective element 320. The primary waterproof layer can be made of hydrophobic materials (such as fluoride coatings, nano-hydrophobic coatings) or flexible sealing materials (such as silicone films, TPU films), which can effectively block water droplets, water vapor and liquid contaminants that may seep in from the side or top of the button cover 200. When the button cover 200 is assembled with the button housing 100, the protective element 320 forms a sealing interface, further enhancing the waterproof performance of the area of ​​the first opening 150, and preventing liquid from penetrating into the contact piece 310 and the interior of the mounting cavity 140 along the structural gaps.

[0068] Optionally, a secondary seal is provided between the protective component 320 and the button housing 100 to further improve the sealing reliability of the push-button switch.

[0069] Understandably, the secondary seal is located on the mating surface between the periphery of the protective element 320 and the first end of the button housing 100. For example, an annular groove is provided on the end face or step around the first opening 150 of the button housing 100 to accommodate sealing structures such as O-rings, gaskets, or elastic rubber rings. When the button cover 200 is assembled in place and presses the protective element 320 against it, the protective element 320 fits tightly against the end face of the button housing 100 through the secondary seal, forming a continuous sealing ring around the first opening 150. This sealing ring effectively fills the assembly gap between the protective element 320 and the button housing 100, blocking the path of contaminants such as moisture and dust from radial or axial intrusion into the mounting cavity 140, and maintaining good sealing performance, especially under environments of vibration, temperature changes, or external pressure fluctuations.

[0070] It should be noted that the secondary seal and the primary waterproof layer on the protective component 320, the mechanical seal structure of the flange 110 and the overlapping platform 221, and the protective contact components together constitute a multi-level protection system, which significantly enhances the overall sealing protection level of the push button switch.

[0071] In one embodiment of this utility model, such as Figure 3 and Figure 6 As shown, the button housing 100 is provided with a mounting cavity 140, and a trigger mechanism is provided in the mounting cavity 140. The trigger mechanism is provided with a trigger end 410 that passes through the first opening 150.

[0072] Understandably, the button housing 100 has an internal mounting cavity 140 to house and protect the core functional components of the button switch. A trigger mechanism is housed within the mounting cavity 140. This trigger mechanism can take the form of a keypad, such as a conductive rubber keypad or a micro-switch integrated on a circuit board, to control the on / off state of the electrical signal. The top of the trigger mechanism has a trigger end 410, which extends upward and passes through an opening at the first end of the button housing 100, partially protruding from the mounting cavity 140 or flush with the opening end face, to receive pressure from the button cover 200. When the user presses the button cover 200, the pressure is transmitted through the button portion 210 or its inner protrusion 212 to the trigger end 410, causing the keypad 400 to elastically deform, thereby contacting or disconnecting with the circuit contacts below, completing the switching action.

[0073] Optional, such as Figure 3 As shown, the triggering mechanism includes a button plate 400, which is disposed in the mounting cavity 140 and has a trigger end 410.

[0074] It is understood that the triggering mechanism includes a button plate 400, which is fixedly or movably disposed within the mounting cavity 140 of the button housing 100, serving as the core component for realizing the button's on / off function. A trigger end 410 is provided at a corresponding position on the button plate 400. This trigger end 410 protrudes upward, passes through the opening at the first end of the button housing 100, and extends to the outside, or is flush with the opening end face, for receiving the pressing force from the button cover 200.

[0075] Furthermore, the outer surface of the keypad 400 is provided with a secondary waterproof layer.

[0076] Understandably, the outer surface of the keypad 400 is provided with a secondary waterproof layer. This waterproof layer covers the entire exposed surface of the keypad 400, forming comprehensive protection for the internal conductive structure. The secondary waterproof layer can be made of materials such as hydrophobic coatings, insulating sealants, silicone encapsulation layers, or polymer films, possessing excellent waterproof, moisture-proof, dustproof, and electrical insulation properties. After the buttons are assembled, this waterproof layer can effectively prevent water vapor, liquid splashes, or corrosive gases from seeping into the mounting cavity 140 through the first opening 150, and prevent them from spreading along the surface of the keypad 400 to the circuit connection points or contact areas. The secondary waterproof layer can significantly extend the service life of the keypad 400 and maintain conductive stability.

[0077] It should be noted that the secondary waterproof layer design of the button panel 400, together with the structural seal between the button cover 200 and the housing, and the primary waterproof layer protecting the contact parts, work together to construct a three-dimensional waterproof system from the outside in, further improving the overall sealing protection level and long-term operational reliability of the button switch.

[0078] In one embodiment of this utility model, such as Figure 6 and Figure 7 The mounting cavity 140 is provided with a second opening 160 opposite to the first opening 150. This second opening 160 penetrates the button housing 100, forming an assembly channel communicating with the mounting cavity 140. Through the second opening 160, the button plate 400 can slide axially into or out of the lower end of the button housing 100, facilitating easy installation and removal from the mounting cavity 140. This structural design facilitates the installation, replacement, and subsequent maintenance of the button plate 400. It allows for the inspection or replacement of key internal components without disassembling the button cover 200 or the entire structure, significantly improving product maintainability and assembly efficiency. Simultaneously, the through-flow layout of the second opening 160 and the first opening 150 optimizes the utilization of internal space, providing favorable conditions for the stable installation and motion guidance of the trigger mechanism.

[0079] Optional, such as Figure 2 and Figure 3As shown, the triggering mechanism also includes a button base cover 500, which is used to stably fix the button plate 400 in the mounting cavity 140. A mounting portion is provided at the end of the button plate 400 away from the first opening 150. The button base cover 500 is fitted onto the mounting portion and has a snap-fit ​​portion 510. A slot 170 that mates with the snap-fit ​​portion 510 is provided on the side wall of the button housing 100.

[0080] Understandably, a mounting portion is provided at the end of the button plate 400 away from the first opening 150. This mounting portion can be a boss, a connecting post, or a positioning rod, used to mate with the button base cover 500. The button base cover 500 is fitted onto this mounting portion and achieves axial and radial limiting through its own structure. The button base cover 500 is provided with a snap-fit ​​portion 510, such as an elastic hook; correspondingly, a matching slot 170 is provided on the side wall of the mounting cavity 140. During assembly, the button base cover 500 together with the button plate 400 is pushed into the mounting cavity 140. When it reaches the designated position, the snap-fit ​​portion 510 elastically engages with the slot 170, forming a firm locking connection. At the same time, the side wall of the button base cover 500 and the side wall of the mounting cavity 140 fit tightly together. This snap-fit ​​structure not only axially fixes the keypad 400 to prevent it from loosening or falling out during use due to vibration or pressing and rebound, but also seals the second opening 160 to prevent dust and moisture from entering the mounting cavity 140 from the rear end.

[0081] Furthermore, a fastener 600 is connected to the outer side of the button housing 100. The fastener is located outside the slot 170 to further enhance the connection reliability between the button base cover 500 and the button housing 100.

[0082] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A waterproof button, characterized in that, include: A button housing (100) is provided with a mounting cavity (140), a first opening (150) communicating with the mounting cavity (140) is provided at the first end of the button housing (100), and an outwardly extending flange (110) is provided on the side of the first end of the button housing (100). A protective contact component is disposed at the first end of the button housing (100) and is used to seal the first opening (150). A button cover (200) is provided at the first end of the button housing (100), and a connecting platform (221) is provided at the second end of the button cover (200), and the flange (110) is attached to the connecting platform (221).

2. The waterproof button according to claim 1, characterized in that, The protective contact component includes: A contact piece (310) is disposed in the first opening (150); A protective element (320) is disposed at the first end of the button housing (100) and located between the first end of the button cover (200) and the contact piece (310).

3. The waterproof button according to claim 2, characterized in that, The protective component (320) has a primary waterproof layer on its surface away from the contact piece (310).

4. The waterproof button according to claim 2, characterized in that, A secondary seal is provided between the protective component (320) and the button housing (100).

5. The waterproof button according to any one of claims 1 to 4, characterized in that, Also includes: A triggering mechanism is provided in the mounting cavity (140), and the triggering mechanism is provided with a triggering end (410) that passes through the first opening (150).

6. The waterproof button according to claim 5, characterized in that, The triggering mechanism includes: A button plate (400) is disposed in the mounting cavity (140). The button plate (400) is provided with the trigger end (410). The end of the button plate (400) away from the first opening (150) is provided with a mounting part.

7. The waterproof button according to claim 6, characterized in that, The outer surface of the keypad (400) is provided with a secondary waterproof layer.

8. The waterproof button according to claim 6, characterized in that, The triggering mechanism further includes: A button base cover (500) is sleeved on the mounting part. The button base cover (500) is provided with a snap-fit ​​part (510). The side wall of the button housing (100) is provided with a slot (170) that cooperates with the snap-fit ​​part (510).

9. The waterproof button according to any one of claims 1 to 4, characterized in that, The side of the mounting plate (221) abuts against the side of the button housing (100).

10. The waterproof button according to claim 9, characterized in that, A primary seal is provided between the flange (110) and the overlapping platform (221).

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