Key assembly
By adopting a multi-layer waterproof structure in the key assembly, including a sealing sleeve and a glue filling layer, the problem of failure of the key assembly in the prior art under high temperature and high humidity environments is solved, and good waterproofness and durability are achieved.
Patent Information
- Application Number
- CN202420143879.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The existing button components are prone to failure in high temperature, high humidity, condensation and immersion environments, and lack good waterproofness and durability.
A key assembly including a shell, bottom shell, circuit board, stroke switch, key components and bracket is designed. A multi-layer waterproof structure is realized through a sealing sleeve and glue filling layer to ensure that a sealed space is formed between the key components and the shell. And the sealing sleeve is used to seal the stroke switch, and the glue filling layer covers the circuit board and the sealing sleeve to form an inner and outer waterproof structure.
It achieves good waterproofness and reliability in high temperature, high humidity, condensation and immersion environments, ensuring the long life and high quality operation of the components.
Smart Images
Figure CN222190529U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of fire protection, and in particular to a waterproof button assembly. Background Art
[0002] The key components used in the fire protection field may need to be used in high temperature, high humidity, condensation, and water immersion environments. Such use environments have very high requirements for reliability. Existing key components may have the problem of failure due to water immersion. Therefore, a key component with better waterproof performance is needed. Utility Model Content
[0003] The purpose of the present application is to provide a key assembly that can solve reliability problems in harsh environments such as high temperature, high humidity, condensation, and immersion.
[0004] The present application also aims to provide a key assembly having good waterproofness and durability.
[0005] The present application also aims to overcome at least one of the above-mentioned drawbacks.
[0006] To achieve the above-mentioned purpose, the present application provides a key assembly, which includes an outer shell, a bottom shell, a circuit board, a travel switch, a key component and a bracket, wherein the outer shell is connected to the bottom shell to define a first space, the circuit board, the travel switch, the key component and the bracket are located in the first space, and the key component is sealed against the outer shell by means of the bracket.
[0007] In one embodiment, the circuit board is mounted on the bottom shell, and the travel switch is arranged on the circuit board.
[0008] In one embodiment, the button assembly further includes a sealing sleeve, which is sleeved on the travel switch. The button assembly further includes a glue potting layer, which covers the circuit board and a portion of the sealing sleeve.
[0009] In one embodiment, the button component is located between the bracket and the housing, and a sealed second space is formed between the button component and the housing.
[0010] In one embodiment, the button component includes a body portion and a button protruding from the body portion.
[0011] In one embodiment, the bracket includes a receiving hole and a wing portion, the travel switch passes through the receiving hole, and the wing portion extends and bends from both sides of the bracket along the protruding direction of the button.
[0012] In one embodiment, the housing comprises a housing body and a key protection cover disposed on the housing body, wherein the key protection cover is configured to operably expose the key outside the housing.
[0013] In one embodiment, the button component includes a resilient portion, the resilient portion is elastic, and the button is connected to the main body via the resilient portion.
[0014] In one embodiment, the key assembly further includes a light emitting element, which is disposed on the circuit board and adjacent to the travel switch. The key has a light-transmitting channel, which extends along a protruding direction of the key and is aligned with the light emitting element.
[0015] In one embodiment, the outer surface of the key has a bright light area, and the bright light area transmits the light emitted by the light-emitting element and propagated through the light-transmitting channel to the outside of the key.
[0016] In one embodiment, the button component is made of silica gel and is light-transmissive, the bracket is fixed to the housing by means of screws, and the light-emitting element is an LED.
[0017] In one embodiment, the button abuts against the sealing sleeve.
[0018] In one embodiment, the travel switch includes a telescopic portion and a fixed portion, and the telescopic portion can telescopically move relative to the fixed portion.
[0019] In one embodiment, the sealing sleeve has a first part and a second part which are integrally formed, the first part surrounds the telescopic part, the second part surrounds the fixed part, and the outer circumference of the first part is smaller than the outer circumference of the second part.
[0020] The key assembly of the present application has at least one of the following advantages:
[0021] 1. The key assembly of the present application has good waterproofness and can have good reliability in high temperature, high humidity, condensation and water immersion environments;
[0022] 2. The key assembly of the present application has a simple structure and is easy to assemble;
[0023] 3. The key assembly of the present application has good operating quality, good durability and long service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Various objects, features and advantages of the present application will become more apparent by considering the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. The accompanying drawings are only exemplary illustrations of the present application and are not necessarily drawn to scale. In the accompanying drawings, the same reference numerals always represent the same or similar parts. Among them:
[0025] Figure 1 is a three-dimensional exploded view of the key assembly of the present application;
[0026] Figure 2 is a front view of the key assembly of the present application;
[0027] Figure 3 yes Figure 2 Section view along line AA;
[0028] Figure 4 yes Figure 3 A partial enlarged view of a portion of circle B.
[0029] List of reference numerals:
[0030] 100 Button Assembly
[0031] 110 Housing
[0032] 111 Button protection cover
[0033] 112 Indicator
[0034] 113 Shell body
[0035] 114 First connection
[0036] 120 Button Parts
[0037] 121 keys
[0038] 1211 Bright Area
[0039] 122 Body part
[0040] 123 Rebound
[0041] 124 light transmission channel
[0042] 130 Bracket
[0043] 131 receiving hole
[0044] 132 Wing
[0045] 133 Fixing holes
[0046] 140 Circuit Board
[0047] 141 Travel switch
[0048] 1411 Telescopic part
[0049] 1412 Fixed part
[0050] 142 Light-emitting element
[0051] 143 Sealing sleeve
[0052] 1431 Part 1
[0053] 1432 Part 2
[0054] 150 bottom shell
[0055] 151 Second connection
[0056] S1 First Space
[0057] S2 Second Space DETAILED DESCRIPTION
[0058] In order to further illustrate the principle and structure of the present application, the preferred embodiments of the present application are now described in detail in conjunction with the accompanying drawings. However, the embodiments are only for illustration and explanation and cannot be used to limit the scope of patent protection of the present application.
[0059] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "an", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.
[0060] The key assembly of the present application can be applied to fire protection products, but is not limited thereto. The key assembly of the present application can be applied to any suitable device.
[0061] See also Figure 1 The key assembly 100 may include a housing 110, a bottom housing 150, a circuit board 140, a travel switch 141, a key component 120, and a bracket 130. The housing 110 is coupled to the bottom housing 150 to define a first space S1 (see Figure 3 The circuit board 140 , the travel switch 141 , the key component 120 and the bracket 130 may be located in the first space S1 . The key component 120 may be sealed against the housing 110 by means of the bracket 130 .
[0062] The key assembly 100 may further include a sealing sleeve 143. The sealing sleeve 143 may be located in the first space S1. The travel switch 141 may be disposed on the circuit board 140. The sealing sleeve 143 may be sleeved on the travel switch 141.
[0063] The rear portion of the housing 110 ( Figure 1 The lower portion of the bottom case 150 may be open, and the front portion of the bottom case 150 ( Figure 1 The upper portion of the housing 110 and the bottom housing 150 may be open. Figure 1 The housing 110 and the bottom housing 150 may be connected to each other in the up-down direction. The housing 110 may have a first connection portion 114. The bottom housing 150 may have a second connection portion 151. The first connection portion 114 and / or the second connection portion 151 may be a connection hole, but the present application is not limited thereto. The first connection portion 114 and the second connection portion 151 may be fixed to each other by means of screws, but the present application is not limited thereto. The first space S1 formed by the housing 110 and the bottom housing 150 may be sealed.
[0064] The key assembly 100 may further include a light emitting element 142. The light emitting element 142 may be disposed on the circuit board 140 and adjacent to the travel switch 141. The light emitting element 142 may be an LED, but the present application is not limited thereto. The circuit board 140 may be a printed circuit board (PCBA), but the present application is not limited thereto.
[0065] The circuit board 140 may be mounted on the bottom case 150. For example, the circuit board 140 may be fixed to the bottom case 150 by screws. The light emitting element 142 and the travel switch 141 may be welded on the circuit board 140.
[0066] The key assembly 100 may further include a glue potting layer (not shown). The glue potting layer may cover the circuit board 140 and a portion of the sealing sleeve 143. Specifically, the glue potting layer may cover the electronic components on the circuit board 140, but not the second connecting portion 151. In other words, the glue potting layer covers the bottom of the bottom shell 150 ( Figure 3 The left part of the key assembly 100 is formed by pouring glue, that is, pouring glue in a fluid state and solidifying the poured glue. The pouring glue layer can make the key assembly 100 and the parts therein have a better sealing effect, and it is not easy to leak water at the parts during maintenance and assembly.
[0067] The bracket 130 may have a fixing hole 133, and the key component 120 may have a through hole corresponding to the fixing hole 133. The bracket 130 and the key component 120 may be fixed to the housing 110 by screw assembly. The bracket 130, the key component 120 and the housing 110 are tightly combined after assembly. The key component 120 may be located between the bracket 130 and the housing 110, and a sealed second space S2 may be formed between the key component 120 and the housing 110 (see Figure 4). The key component 120 can isolate the first space S1 from the second space S2. In this embodiment, the bracket 130 can have 6 fixing holes 133. In other embodiments, the bracket 130 can have 3, 4, 8 or other numbers of fixing holes 133. The number of through holes on the key component 120 can correspond to the number of fixing holes 133. The key component 120 can be made of silicone. Optionally, the key component 120 can be made of materials such as rubber and plastic. The key component 120 can be light-transmissive or transparent.
[0068] The bracket 130 may further include a receiving hole 131. The button member 120 may include a body portion 122 and a button 121 protruding from the body portion 122. The button 121 may pass through the receiving hole 131.
[0069] In this embodiment, the bracket 130 may include two receiving holes 131 , and the button component 120 may include two buttons 121 accordingly.
[0070] In other embodiments, the bracket 130 may include 1, 3, 4 or other numbers of receiving holes 131 , and the button component 120 may correspondingly include 1, 3, 4 or other numbers of buttons 121 .
[0071] In this embodiment, the number of travel switches is 2.
[0072] The number of travel switches may correspond to the number of the button components 120 . Therefore, in other embodiments, the number of travel switches may be 1, 3, 4 or other numbers.
[0073] In other embodiments, as in the present embodiment, the receiving hole 131 may be formed in a square shape.
[0074] In other embodiments, the receiving hole 131 may be formed in a circular, rectangular, diamond or irregular shape, etc.
[0075] In this embodiment, the button 121 may be formed in a circular shape.
[0076] In other embodiments, the button 121 may be formed in an oval, square, triangle, or irregular shape, etc.
[0077] The bracket 130 may further include a wing 132. The wing 132 may extend from both sides of the bracket 130 in the direction in which the button 121 protrudes and bend. That is, the wing 132 may form a shape similar to an "L". When the bracket 130 is fixed to the housing 110, the wing 132 may abut against the housing 110, thereby forming a space between the bracket 130 and the housing 110 to accommodate the body 122 of the button component 120.
[0078] See also Figure 1 and Figure 2 , the housing 110 may include a housing body 113 and a key protection cover 111 disposed on the housing body 113. The key protection cover 111 may be configured to operably expose the key 121 to the outside of the housing 110. The key protection cover 111 may, for example, be pivotally connected to the housing 110 so as to be able to be opened and closed. When the key protection cover 111 is opened, the key 121 may be exposed so that the key 121 may be operated by pressing or the like. Since the bracket 130 seals the key component 120 to the housing 110, even if the key protection cover 111 is opened, water vapor cannot enter the first space S1.
[0079] See also Figure 1 and Figure 4 , the button component 120 may include a rebound portion 123. The rebound portion 123 may have elasticity. The button 121 may be connected to the body portion 122 through the rebound portion 123. The rebound portion 123 may surround the button 121. When the button 121 is released after being pressed, the rebound portion 123 may return the button 121 to an initial state where it is not pressed.
[0080] See also Figure 3 and Figure 4 , the key 121 may have a light-transmitting channel 124. The light-transmitting channel 124 is along the direction in which the key 121 protrudes ( Figure 4 The light-transmitting channel 124 can be aligned with the light-emitting element 142, so that the light emitted by the light-emitting element 142 can be better transmitted into the light-transmitting channel 124.
[0081] The outer surface of the key 121 ( Figure 4 The outer surface of the key 121 may be exposed to the outside of the housing 110, and the specific color or text mark may convey information, for example, indicating the function of the key 121. The outer surface of the key 121 may have a bright area 1211. The bright area 1211 may transmit the light emitted by the light-emitting element 142 and transmitted through the light-transmitting channel 124 to the outside of the key 121. The bright area 1211 may be formed by laser engraving to remove the silk-screened part, but the present application is not limited thereto.
[0082] The button 121 can abut against the sealing sleeve 143. Specifically, as Figure 4 As shown, the left end of the button 121 can abut against the right end of the sealing sleeve 143 .
[0083] The travel switch 141 may include a telescopic portion 1411 and a fixed portion 1412. The telescopic portion 1411 may telescope relative to the fixed portion 1412, thereby triggering the travel switch 141. The telescopic portion 1411 may be thinner than the fixed portion 1412 (ie, have a smaller outer peripheral profile).
[0084] The sealing sleeve 143 may include a first portion 1431 and a second portion 1432 formed integrally. The first portion 1431 may surround the telescopic portion 1411. The second portion 1432 may surround the fixed portion 1412. The outer circumference of the first portion 1431 is smaller than the outer circumference of the second portion 1432. The sealing sleeve 143 may be made of rubber. The sealing sleeve 143 is waterproof and may be elastic. Since the glue layer covers a portion ( Figure 4 The glue layer and the sealing sleeve 143 can prevent the circuit board 140 and the travel switch 141 from contacting the outside world, thereby playing a waterproof role. The sealing sleeve 143 can also prevent glue from entering the travel switch 141 during glue filling.
[0085] The key assembly 100 of the present application has a multi-layer waterproof structure. The outer shell 110, the bottom shell 150 and the case component 120 constitute an outer waterproof structure. The sealing sleeve 143 and the glue layer constitute an inner waterproof structure. In this way, the key assembly 100 of the present application has excellent waterproof performance.
[0086] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present disclosure and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the claims of the present application.
[0087] Although the present application has been described with reference to typical embodiments, the terms used are illustrative and exemplary rather than restrictive. Since the present application can be implemented in various forms without departing from the spirit and essence of the present application, it should be understood that the above embodiments are not limited to any of the aforementioned details, but should be interpreted in the broadest sense within the scope defined by the claims, so all changes falling within the claims or their equivalents should be covered by the claims.
Claims
1. A key assembly (100), characterized in that: The key assembly comprises a shell (110), a bottom shell (150), a circuit board (140), a travel switch (141), a key component (120) and a bracket (130); the shell is connected to the bottom shell to define a first space (S1); the circuit board, the travel switch, the key component and the bracket are located in the first space; the key component is sealed against the shell by means of the bracket.
2. The key assembly according to claim 1, characterized in that: The circuit board is mounted on the bottom shell, and the travel switch is arranged on the circuit board.
3. The key assembly according to claim 1, characterized in that: The key assembly further comprises a sealing sleeve (143), which is sleeved on the travel switch. The key assembly further comprises a glue potting layer, which covers the circuit board and a part of the sealing sleeve.
4. The key assembly according to claim 1, characterized in that: The key component is located between the bracket and the housing, and a second space (S2) is formed between the key component and the housing. The key component isolates the first space from the second space.
5. The key assembly according to claim 3, characterized in that: The key component comprises a main body (122) and a key (121) protruding from the main body.
6. The key assembly according to claim 5, characterized in that: The bracket comprises a receiving hole (131) and a wing portion (132), the travel switch passes through the receiving hole, and the wing portion extends and bends from both sides of the bracket along the protruding direction of the button.
7. The key assembly according to claim 5, characterized in that: The housing comprises a housing body (113) and a key protection cover (111) arranged on the housing body, wherein the key protection cover is arranged to be operable to expose the keys outside the housing.
8. The key assembly according to claim 5, characterized in that: The key component comprises a resilient portion (123), the resilient portion having elasticity, and the key is connected to the main body via the resilient portion.
9. The key assembly according to claim 5, characterized in that: The key assembly also includes a light emitting element (142), which is arranged on the circuit board and adjacent to the travel switch. The key has a light-transmitting channel (124), which extends along the protruding direction of the key and is aligned with the light emitting element.
10. The key assembly according to claim 9, characterized in that: The outer surface of the key has a bright light area (1211), and the bright light area transmits the light emitted by the light-emitting element and transmitted through the light-transmitting channel to the outside of the key.
11. The key assembly according to claim 9, characterized in that: The key component is made of silica gel and is light-transmissive, the bracket is fixed on the housing by means of screws, and the light-emitting element is an LED.
12. The key assembly according to claim 6, characterized in that: The button abuts against the sealing sleeve.
13. The key assembly according to claim 3, characterized in that: The travel switch comprises a telescopic portion (1411) and a fixed portion (1412), and the telescopic portion can telescopically move relative to the fixed portion.
14. The key assembly according to claim 13, characterized in that: The sealing sleeve comprises a first part (1431) and a second part (1432) which are integrally formed, wherein the first part surrounds the telescopic part, and the second part surrounds the fixed part, and the outer circumference of the first part is smaller than the outer circumference of the second part.