Waterproof button

Abstract

The utility model relates to the technical field of electric appliance control, and provides a waterproof button, which comprises a button cover, a button shell and a button contact piece, the button cover comprises a button part and a sealing side part, the first end of the sealing side part is connected to the periphery of the button part, and the inner side surface of the second end of the sealing side part is provided with a lap joint table extending inwards; the first end of the button shell penetrates through the second end of the sealing side part, the first end of the button shell is provided with a flange extending outwards, and the flange is lapped on the lapping table; the middle area of the button contact piece abuts against the button part, and the peripheral area of the button contact piece is arranged on the lap joint table. According to the utility model, the flange of the button shell is inserted into the button cover and is 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 improved; the button contact piece is arranged between the button cover and the button shell, so that water vapor and dust are prevented from entering the button shell, and the sealing protection level of the button switch is 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] As a basic control electrical appliance, the push-button switch functions by manually pressing an internal operating mechanism that causes the moving contact to make or separate from the stationary contact, thereby completing the on / off or switching operation of the circuit. A typical push-button switch structure includes a contact assembly, an operating mechanism, and an optional signal indicator. The contact assembly usually consists of a moving contact and a stationary contact, while the operating mechanism transmits the pressing force and controls the movement trajectory of the moving contact to ensure reliable circuit connection and disconnection. Due to its simple structure and stable operation, push-button switches are widely used in electrical control circuits as command input elements to drive control actuators such as contactors, relays, or electromagnetic starters, and have become an important operating interface in industrial automation control systems.

[0003] In existing technologies, push-button switches are typically protected by a sealing ring at the junction of the button cover and the housing to isolate them from the external environment. However, due to limitations in the fit and installation method between the sealing ring and the housing, it is often difficult to form a uniform and durable compression seal. Under long-term use or changes in operating conditions (such as temperature fluctuations or mechanical vibrations), gaps or deformations can easily appear at the sealing interface, leading to a decrease in sealing effectiveness. Especially in harsh environments such as humid, dusty, or outdoor conditions, moisture, corrosive gases, or dust can easily seep into the switch through these unsealed areas, affecting the conductivity of the contacts and ultimately threatening the switch's functional integrity and lifespan. Utility Model Content

[0004] This invention provides a waterproof button to solve the problem of poor sealing performance in existing button switches.

[0005] This utility model provides a waterproof button, including:

[0006] Button cover, the button cover comprising:

[0007] Button section;

[0008] The sealing side is a hollow structure. The first end of the sealing side is connected to the periphery of the button part, and the inner side of the second end of the sealing side is provided with an inwardly extending overlapping platform.

[0009] A button housing, the first end of which passes through the second end of the sealing side, and the first end of the button housing is provided with an outwardly extending flange, which overlaps the overlapping platform;

[0010] A button contact, wherein the central region of the button contact abuts against the button portion, and the peripheral region of the button contact is disposed on the mounting platform.

[0011] According to the present invention, a waterproof button is provided on the side of the flange away from the overlapping platform, the outer side of the positioning plate is in contact with the button part, and the inner side of the positioning plate is in contact with the outer side of the button contact.

[0012] According to the present invention, at least one of the outer side of the button contact and the inner side of the positioning plate, and between the button contact and the button housing, is provided with a secondary sealing element.

[0013] According to the present invention, a waterproof button is provided with a positioning notch on the outer side of the end of the positioning plate away from the flange, and a positioning protrusion that cooperates with the positioning notch is provided on the inner side of the sealing side.

[0014] According to the present invention, a waterproof button is provided, wherein the positioning plate is annular, and the outer diameter of the positioning plate gradually increases from the end away from the flange to the end closer to the flange.

[0015] According to the present invention, a waterproof button is provided with a primary waterproof layer on the outer surface of the button contact.

[0016] According to the present invention, a waterproof button is provided in which the button housing is provided with a mounting cavity, and a first opening communicating with the mounting cavity is provided at the first end of the button housing;

[0017] The mounting cavity is provided with a triggering mechanism, and the triggering mechanism is provided with a triggering end that passes through the first opening.

[0018] According to the present invention, a waterproof button is provided in which a first positioning part is provided on the inner wall of the mounting cavity, and a second opening is provided in the mounting cavity opposite to the first opening;

[0019] The triggering mechanism includes a button plate, which is provided with a second positioning part. The second positioning part is slidably connected to the first positioning part so that the button plate can be moved out of or into the mounting cavity from the second opening.

[0020] According to the present invention, a waterproof button is provided at one end of the button plate away from the first opening, and the triggering mechanism further includes a button base cover. The button base cover is sleeved on the mounting part, and the button base cover is provided with a snap-fit ​​part. The button housing is provided with a slot that cooperates with the snap-fit ​​part.

[0021] According to the present invention, a waterproof button is provided, wherein a fastener is connected to the outer side of the button housing, and the fastener is located outside the slot.

[0022] 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 enhancing the overall sealing performance. It reliably blocks 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 button contact is provided between the button cover and the button housing. Through the coordinated cooperation of the button contact with the button cover and the button housing, moisture and dust are further prevented from entering the interior of the button housing, improving the overall sealing and protection level of the button switch.

[0023] In this invention, the button contact has a disc-shaped structure. Its outer region is positioned above the overlapping platform between the button housing and the button cover, while the central region abuts against the inner surface of the button portion of the button cover. The outer region of the button contact is compressed and sealed, while the central region is pressurized and conductive, forming a sealing barrier that effectively prevents moisture and dust from intruding into the button housing. This achieves synergistic optimization of electrical performance and environmental protection, significantly improving the reliability and service life of the button switch under harsh operating conditions. Attached Figure Description

[0024] 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.

[0025] Figure 1 This is a structural schematic diagram of the waterproof button provided by this utility model.

[0026] Figure 2 This is an exploded view of the waterproof button provided by this utility model.

[0027] Figure 3 This is a cross-sectional structural diagram of the waterproof button provided by this utility model.

[0028] Figure 4 This is one of the cross-sectional structural schematic diagrams of the button contact provided by this utility model.

[0029] Figure 5 This is the second cross-sectional structural schematic diagram of the button contact provided by this utility model.

[0030] Figure 6 This is a cross-sectional structural diagram of the button housing provided by this utility model.

[0031] Figure label:

[0032] 100. Button housing; 110. Flange; 120. Positioning plate; 140. Mounting cavity; 150. First opening; 160. Second opening; 170. Slot; 180. First positioning part;

[0033] 200. Button cover; 210. Button part; 220. Sealing side; 221. Overlapping platform;

[0034] 330. Button contacts;

[0035] 400. Button board; 410. Trigger terminal;

[0036] 500. Button base cover; 510. Clip-on part;

[0037] 600. Nuts. Detailed Implementation

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] The following is combined with Figures 1-6 This invention describes a waterproof button.

[0044] 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 button contact 330 disposed between the button housing 100 and the button cover 200.

[0045] like Figure 3As shown, the button cover 200 includes a button portion 210 and a sealing side portion 220. 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 inner side of the second end of the sealing side portion 220 is provided with an inwardly extending overlapping platform 221. The first end of the button housing 100 passes through the second end of the sealing side portion 220. The first end of the button housing 100 is provided with an outwardly extending flange 110, which overlaps the overlapping platform 221. The button contact 330 has its central region abutting against the button portion 210, and its peripheral region is located on the overlapping platform 221.

[0046] It is understood that the button cover 200 includes a button portion 210 at the top and a hollow sealing side portion 220 connected to its periphery. The button portion 210 is located above the first end of the button housing 100 and is used to cover and protect the internal structure of the button housing 100. The sealing side portion 220 extends downward from the button portion 210, and its second end inner surface is provided with an inwardly protruding overlapping platform 221. The first end of the button housing 100 passes through the inner cavity of the second end of the sealing side portion 220, and has an outwardly protruding flange 110 on its periphery. The flange 110 overlaps with the overlapping platform 221 to achieve axial limiting and sealing fit between the button cover 200 and the button housing 100. The flange 110 seals and overlaps with the overlapping platform 221 to form a sealing structure. This interlocking structural design not only enhances the overall structural stability but also forms a sealing path at the joint, effectively preventing the intrusion of external moisture and dust, thereby improving the waterproof and dustproof performance of the button.

[0047] like Figure 4 and Figure 5 As shown, the button contact 330 has a disc-shaped structure. Its outer region is located above the overlapping platform 221 between the button housing 100 and the button cover 200, while the middle region abuts against the inner surface of the button portion 210 of the button cover 200. When the middle region is pressed by the button portion 210, the button contact 330 can undergo elastic deformation, conducting downward to the circuit contacts inside the button housing 100 to realize the switching function.

[0048] 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.

[0049] It should be noted that the button contact 330 is integrated between the button cover 200 and the button housing 100. The outer area of ​​the button contact 330 is compressed and sealed, while the middle part is pressurized and conductive to form a sealing barrier, effectively preventing moisture and dust from entering the interior of the button housing 100. This achieves synergistic optimization of electrical performance and environmental protection, significantly improving the reliability and service life of the button switch under harsh operating conditions. Thus, the mechanical seal structure of the flange 110 and the lap joint 221, together with the button contact 330, constitute a multi-level protection system, further enhancing the overall sealing protection level of the button switch.

[0050] 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 button contact 330 is provided between the button cover 200 and the button housing 100. Through the cooperative cooperation of the button contact 330 with the button cover 200 and the button housing 100, water vapor and dust are further prevented from entering the interior of the button housing 100, further improving the overall sealing and protection level of the button switch.

[0051] According to an embodiment of this utility model, the sealing side 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 along the horizontal direction is provided on the lower inner surface of the sealing side 220, which extends along 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 220 and overlaps on the overlapping platform 221 to achieve axial and radial limiting fit.

[0052] 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.

[0053] 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.

[0054] Optionally, the positioning plate 120 is annular, and the outer side of the positioning plate 120 is in contact with the inner side of the sealing side 220.

[0055] It is understood that the positioning plate 120 has an annular structure, with its outer circumference extending outward and closely fitting the inner surface of the sealing side 220. When the button cover 200 is assembled with the button housing 100, the inner surface of the sealing side 220 and the outer surface of the positioning plate 120 are in close contact, forming an annular axial and radial double limiting fit.

[0056] It should be noted that the outer surface of the positioning plate 120 and the inner surface of the sealing side 220 are in close contact, which enhances the connection stability between the button cover 200 and the button housing 100 and prevents offset or rotation during assembly. At the same time, the close contact between the positioning plate 120 and the sealing side 220 can effectively fill the mating gap, reduce loosening caused by vibration or thermal expansion and contraction, and further improve the sealing reliability of the overall structure.

[0057] In one embodiment of the present invention, a positioning notch is provided on the outer side of the end of the positioning plate 120 away from the flange 110, and a positioning protrusion that cooperates with the positioning notch is provided on the inner side of the sealing side 220.

[0058] Understandably, the outer side of the positioning plate 120 away from the flange 110 has an annular or partial positioning notch, and the inner side of the sealing side 220 has a corresponding positioning protrusion. When the button cover 200 is assembled with the button housing 100, the positioning protrusion of the sealing side 220 slides axially into the positioning notch on the positioning plate 120, forming a radial and axial limiting fit. This controls the installation position of the button cover 200, preventing circumferential rotation or excessive axial pressing during assembly, and also enhances the stability of the connection and the accuracy of the assembly. At the same time, the interlocking structure of the positioning protrusion and the positioning notch forms an additional sealing path at the joint, which helps to further prevent the intrusion of external moisture and dust.

[0059] In one embodiment of the present invention, the side of the mounting platform 221 abuts against the side of the button housing 100.

[0060] In one embodiment of this utility model, a primary seal is provided between the flange 110 and the overlapping platform 221.

[0061] In one specific embodiment of this utility model, such as Figures 3 to 6 As 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 button contact 330 is disposed at the first end of the button housing 100 and is used to seal the first opening 150.

[0062] It is understood that the button housing 100 has an internal mounting cavity 140 for accommodating the triggering mechanism, and the first end of the button housing 100 has a first opening 150 communicating with the mounting cavity 140 to realize pressing transmission and electrical connection; an outwardly extending flange 110 is provided on the periphery of the first end of the button housing 100 to form a sealing fit with the button cover 200; the button contact is provided at the first end of the button housing 100, covering and sealing the first opening 150, and playing multiple roles of dustproof, waterproof and electrical conduction.

[0063] Optionally, at least one of the following is provided: between the outer side of the button contact 330 and the inner side of the positioning plate 120, and between the button contact 330 and the button housing 100.

[0064] Understandably, at least one secondary seal is provided between the outer surface of the button contact 330 and the inner surface of the positioning plate 120, and between the button contact 330 and the button housing 100. This secondary seal can be an elastic sealing structure such as a ring seal, gasket, or coated sealant, and its specific placement is selected according to actual assembly requirements. When placed between the outer surface of the button contact 330 and the inner surface of the positioning plate 120, it effectively seals the circumferential gap between the two, preventing moisture from radially intruding. When placed between the button contact 330 and the button housing 100, it fills axial micro-gaps, blocking the path of contaminants into the mounting cavity 140 from below. During assembly, the secondary seal is pre-compressed or cured, generating continuous sealing pressure to ensure good sealing integrity under vibration and temperature changes, effectively improving the waterproof and dustproof rating of the protected contact area, and further enhancing the overall reliability and long-term stability of the button switch.

[0065] In this embodiment, a positioning plate 120 is provided on the side of the flange 110 away from the overlapping platform 221. The outer side of the positioning plate 120 is in contact with the button part 210, and the inner side of the positioning plate 120 is in contact with the outer side of the button contact 330.

[0066] It is understandable that the outer side of the positioning plate 120 contacts the outer side of the button contact 330, and the inner side of the positioning plate 120 fits against the outer peripheral side of the button contact 330, so that the button contact 330, the positioning plate 120, and the button cover 200 together form a continuous sealing path.

[0067] Optionally, the outer surface of the button contact 330 is provided with a primary waterproof layer.

[0068] Understandably, the outer surface of the button contact 330 is provided with a primary waterproof layer. This waterproof layer covers the exposed areas of the button contact 330, including its outer periphery, bottom surface, and top edge, providing comprehensive protection for the button contact. When the button contact 330 is installed in the overlapping area between the button housing 100 and the button cover 200, this waterproof layer effectively prevents moisture, liquid splashes, and conductive dust from penetrating from the outside along the surface of the button contact 330 into the mounting cavity 140, preventing malfunctions such as short circuits, leakage, or poor contact caused by moisture condensation or contaminant accumulation.

[0069] 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.

[0070] 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 upwards 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 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.

[0071] 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.

[0072] 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.

[0073] Furthermore, the outer surface of the keypad 400 is provided with a secondary waterproof layer.

[0074] 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. After the buttons are assembled, this waterproof layer can effectively prevent moisture, 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.

[0075] Optional, such as Figure 3 and Figure 6 As shown, the mounting cavity 140 is provided with a second opening 160 opposite to the first opening 150, and a first positioning part 180 is provided on the inner wall of the mounting cavity 140; the keypad 400 is provided with a second positioning part, which is slidably connected to the first positioning part 180, so that the keypad 400 can be moved out of or into the mounting cavity 140 from the second opening 160.

[0076] It is understood that the mounting cavity 140 is provided with a second opening 160 opposite to the first opening 150, forming a through channel from bottom to top, which facilitates the installation and maintenance of components inside the button housing 100. A first positioning part 180 is provided on the inner wall of the mounting cavity 140, which can be a guide rail, rib, or limiting groove extending axially; correspondingly, the button plate 400 is provided with a matching second positioning part, such as a groove, snap-fit, or recess. During assembly, the button plate 400 is pushed into the mounting cavity 140 from the side of the second opening 160, so that the second positioning part and the first positioning part 180 form a sliding engagement, realizing the axial directional sliding and accurate positioning of the button plate 400. This sliding connection structure not only ensures that the button plate 400 maintains a stable posture during movement, preventing displacement or jamming, but also facilitates its installation, replacement, or maintenance. When maintenance is required, the button plate 400 can be directly slid out from the second opening 160 along the first positioning part 180 without disassembling the entire button structure. Meanwhile, the cooperation between the first positioning part 180 and the second positioning part can also limit the lateral displacement of the button plate 400 during the pressing process, ensuring that the trigger end 410 is always aligned with the pressing point of the button cover 200, thereby improving the accuracy and reliability of the operation.

[0077] Furthermore, a positioning surface is provided on the side wall of the mounting cavity 140 of the button housing 100. This positioning surface can be a plane, a stepped surface, or an annular stop surface, used to define the mounting position of the button plate 400. Correspondingly, a positioning protrusion is provided on the outer periphery or side of the button plate 400. This positioning protrusion can be a boss, a locking point, or an extension rib, etc. During assembly, the button plate 400 is pushed axially into the mounting cavity 140 from the second opening 160 side. As the pushing depth increases, the positioning protrusion slides within the mounting cavity 140 and gradually approaches the positioning surface. When the button plate 400 reaches the preset correct mounting position, the positioning protrusion contacts and abuts against the positioning surface. At this time, the trigger end 410 of the button plate 400 is exactly aligned with the first opening 150, achieving precise alignment.

[0078] Optional, such as Figure 2 and Figure 3 As 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.

[0079] 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.

[0080] Furthermore, fasteners are attached to the outer side of the button housing 100. The fasteners are located outside the slot 170 to further enhance the connection reliability between the button base cover 500 and the button housing 100.

[0081] Understandably, the fastener can be a nut 600, which has external threads on the outer side wall of the button housing 100. The fastener is fixed to it by thread engagement or snap-fit ​​and pressed against the outer end face of the button base cover 500. After the snap-fit ​​part 510 of the button base cover 500 is inserted into the slot 170 to complete the initial locking, tightening the fastener can apply an additional axial preload to the button base cover 500, preventing it from loosening or falling off due to equipment vibration, impact, or long-term use. This significantly improves the stability of the button plate 400 within the mounting cavity 140.

[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: Button cover (200), the button cover (200) includes: button part (210); The sealing side (220) is a hollow structure. The first end of the sealing side (220) is connected to the periphery of the button part (210). The inner side of the second end of the sealing side (220) is provided with an inwardly extending overlapping platform (221). A button housing (100) has a first end that passes through the second end of the sealing side (220). The first end of the button housing (100) is provided with an outwardly extending flange (110), which overlaps the overlapping platform (221). A button contact (330) is provided, the central region of which abuts against the button part (210), and the peripheral region of which is provided on the overlapping platform (221).

2. The waterproof button according to claim 1, characterized in that, A positioning plate (120) is provided on the side of the flange (110) away from the overlapping platform (221). The outer side of the positioning plate (120) is in contact with the button part (210), and the inner side of the positioning plate (120) is in contact with the outer side of the button contact (330).

3. The waterproof button according to claim 2, characterized in that, At least one of the outer side of the button contact (330) and the inner side of the positioning plate (120), and between the button contact (330) and the button housing (100), is provided with a secondary seal.

4. The waterproof button according to claim 2, characterized in that, The positioning plate (120) has a positioning notch on the outer side of the end away from the flange (110), and the sealing side (220) has a positioning protrusion that cooperates with the positioning notch on the inner side.

5. The waterproof button according to claim 2, characterized in that, The positioning plate (120) is annular, and the outer diameter of the positioning plate (120) gradually increases from the end away from the flange (110) to the end closer to the flange (110).

6. The waterproof button according to any one of claims 1 to 5, characterized in that, The outer surface of the button contact (330) is provided with a primary waterproof layer.

7. The waterproof button according to claim 6, characterized in that, The button housing (100) is provided with a mounting cavity (140), and the first end of the button housing (100) is provided with a first opening (150) communicating with the mounting cavity (140). The mounting cavity (140) is provided with a triggering mechanism, and the triggering mechanism is provided with a triggering end (410) that passes through the first opening (150).

8. The waterproof button according to claim 7, characterized in that, The inner wall of the mounting cavity (140) is provided with a first positioning part (180), and the mounting cavity (140) is provided with a second opening (160) opposite to the first opening (150). The triggering mechanism includes a button plate (400), which is provided with a second positioning part. The second positioning part is slidably connected to the first positioning part (180) so that the button plate (400) can be moved out of or into the mounting cavity (140) from the second opening (160).

9. The waterproof button according to claim 8, characterized in that, The button plate (400) has an installation part at one end away from the first opening (150). The triggering mechanism also includes a button base cover (500), which is sleeved on the installation part. The button base cover (500) is provided with a snap-fit ​​part (510), and the button housing (100) is provided with a slot (170) that cooperates with the snap-fit ​​part (510).

10. The waterproof button according to claim 9, characterized in that, Fasteners are attached to the outer side of the button housing (100), and the fasteners are located on the outside of the slot (170).

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