CN216719785U - Switch waterproofing mechanism and waterproof switch - Google Patents
Switch waterproofing mechanism and waterproof switch Download PDFInfo
- Publication number
- CN216719785U CN216719785U CN202123446654.1U CN202123446654U CN216719785U CN 216719785 U CN216719785 U CN 216719785U CN 202123446654 U CN202123446654 U CN 202123446654U CN 216719785 U CN216719785 U CN 216719785U
- Authority
- CN
- China
- Prior art keywords
- switch
- conductive rubber
- mounting groove
- vertical plate
- circuit board
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Push-Button Switches (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
The application discloses switch waterproofing mechanism and waterproof switch, wherein, switch waterproofing mechanism includes center, conductive rubber, circuit board and backshell, and the center can be dismantled with the backshell and be connected or welded fastening, and the backshell has the mounting groove, and conductive rubber's border is taken and is established in the upper end of whole mounting groove for prevent to get into the mounting groove from the liquid of top inflow, the circuit board setting just is located conductive rubber's below in the mounting groove. This application is through the border with conductive rubber and is set up the upper end at whole mounting groove to prevent from the liquid entering mounting groove of top inflow. Compared with the existing structure, the switch waterproof mechanism reduces the product cost, reduces the cost of developing a mold, and improves the competitiveness of a product in the market.
Description
Technical Field
The utility model relates to the field of switches, in particular to a waterproof mechanism of a switch and a waterproof switch.
Background
The key switch of an automobile generally comprises a middle frame, a key cap, conductive rubber, a PCB (printed circuit board) and a rear shell, wherein the assembly sequence is as follows: the key cap on the middle frame is installed and matched, then the conductive rubber is placed, then the PCB is installed, and finally the rear shell is installed through the buckle structure.
Because the key cap and the middle frame have the requirement of activity, and a gap is formed between the key cap and the middle frame, water can flow down from the upper surface and flow onto the PCB from the side surface of the conductive rubber, so that components on the PCB are corroded, and the problem of switch function failure is caused.
In order to solve the problems, the existing key switch is connected between the key cap and the middle frame by rubber instead, the scheme can ensure no gap and ensure that water cannot permeate the key cap, but the mode needs to be injection molded by a three-color mold process, the unit price of a product and the investment of the mold are increased by several times, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model provides a switch waterproof mechanism capable of reducing product cost and a waterproof switch aiming at the problems.
The technical scheme adopted by the utility model is as follows:
the utility model provides a switch waterproofing mechanism, includes center, conductive rubber, circuit board and backshell, the center can be dismantled with the backshell and be connected or welded fastening, the backshell has the mounting groove, conductive rubber's border is taken and is established the upper end at whole mounting groove for prevent to get into from the liquid of top inflow the mounting groove, the circuit board sets up in the mounting groove and is located conductive rubber's below.
The edge of the conductive rubber is arranged at the upper end of the whole mounting groove in an overlapping mode, so that liquid flowing from the upper portion is prevented from entering the mounting groove. Compared with the existing structure, the switch waterproof mechanism reduces the product cost, reduces the cost of developing a mold, and improves the competitiveness of a product in the market.
The waterproof switch mechanism can be applied to switches of various products, particularly switches requiring protection level IP5K3, such as a glass lifting switch of an automobile, a seat setting switch of the automobile and the like.
In one embodiment of the present invention, a liquid storage space is formed on a side of the conductive rubber facing away from the circuit board.
When liquid flows in from above, most of the liquid can be left in the liquid storage space through the liquid storage space.
In one embodiment of the present invention, the rear case has a vertical plate portion forming the mounting groove, and the edge of the conductive rubber is located between the middle frame and the upper end of the vertical plate portion.
In one embodiment of the present invention, the upper end of the vertical plate portion presses the conductive rubber to prevent liquid from flowing into the mounting groove from between the vertical plate portion and the conductive rubber.
When the middle frame is detachably connected with the rear shell, such as a buckling structure, liquid can permeate from the connection part. Thereby the upper end of vertical plate portion compresses tightly conductive rubber can form sealed face, can prevent to get into the mounting groove from the liquid of side infiltration.
In one embodiment of the present invention, the edge of the conductive rubber has a first portion that is disposed on the upper end surface of the vertical plate portion and a second portion that is disposed obliquely downward with respect to the first portion, and the second portion is located outside the vertical plate portion.
In one embodiment of the present invention, the first portion is disposed horizontally, and the second portion is disposed vertically.
The middle frame and the rear shell can be welded by ultrasonic, but the rear shell and the middle frame can not be used after being disassembled, and are difficult to disassemble. In one embodiment of the present invention, the middle frame and the rear shell are detachably connected by a snap structure. The detachable connecting structure has low cost and convenient assembly and disassembly.
In one embodiment of the present invention, the circuit board is a PCB circuit board.
The application also discloses a waterproof switch, including the above switch waterproofing mechanism and install the button cap on the center.
The utility model has the beneficial effects that: the edge of the conductive rubber is arranged at the upper end of the whole mounting groove in an overlapping mode, so that liquid flowing from the upper portion is prevented from entering the mounting groove. Compared with the existing structure, the switch waterproof mechanism reduces the product cost, reduces the cost of developing a mold, and improves the competitiveness of a product in the market.
Description of the drawings:
FIG. 1 is a schematic view of a waterproof switch;
FIG. 2 is a top view of the waterproof switch;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is an enlarged view at B of FIG. 3;
fig. 5 is a partial exploded view of the waterproof switch.
The figures are numbered:
1. a middle frame; 2. a conductive rubber; 21. a reservoir space; 22. a first portion; 23. a second portion; 3. a circuit board; 4. a rear housing; 41. mounting grooves; 42. a vertical plate portion; 5. and a key cap.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 5, the embodiment discloses a waterproof switch, including the waterproof mechanism of switch, the waterproof mechanism of switch of this embodiment includes center 1, conductive rubber 2, circuit board 3 and backshell 4, center 1 and backshell 4 can be dismantled and be connected or welded fastening, backshell 4 has mounting groove 41, the upper end at whole mounting groove 41 is set up at the border of conductive rubber 2 for prevent the liquid entering mounting groove 41 from the top inflow, circuit board 3 sets up in mounting groove 41 and is located the below of conductive rubber 2.
By setting up the edge of the conductive rubber 2 on the upper end of the entire mounting groove 41, the liquid flowing from above is prevented from entering the mounting groove 41. Compared with the existing structure, the switch waterproof mechanism reduces the product cost, reduces the cost of developing a mold, and improves the competitiveness of a product in the market.
The waterproof switch mechanism can be applied to switches of various products, particularly switches requiring protection level IP5K3, such as a glass lifting switch of an automobile, a seat setting switch of the automobile and the like.
As shown in fig. 4 and 5, in the present embodiment, the side of the conductive rubber 2 facing away from the circuit board 3 has a liquid storage space 21. When liquid flows in from above, most of the liquid can be left in the liquid storage space 21 through the liquid storage space 21.
As shown in fig. 4, in the present embodiment, the rear case 4 has a vertical plate portion 42, the vertical plate portion 42 forms the mounting groove 41, and the edge of the conductive rubber 2 is located between the center frame 1 and the upper end of the vertical plate portion 42.
In the present embodiment, the upper end of the vertical plate portion 42 presses the conductive rubber 2 for preventing liquid from flowing into the mounting groove 41 from between the vertical plate portion 42 and the conductive rubber 2. When the middle frame 1 is detachably connected with the rear case 4, such as a snap structure, liquid can infiltrate from the connection. The upper end of the vertical plate portion 42 presses the conductive rubber 2 so that a sealing surface can be formed, and liquid infiltrating from the side can be prevented from entering the mounting groove 41.
As shown in fig. 4 and 5, in the present embodiment, the edge of the conductive rubber 2 has a first portion 22 that is set up on the upper end surface of the vertical plate portion 42 and a second portion 23 that is set up obliquely downward with respect to the first portion 22, and the second portion 23 is located outside the vertical plate portion 42.
In this embodiment, the first portion 22 is disposed horizontally and the second portion 23 is disposed vertically.
The middle frame 1 and the rear shell 4 can be welded by ultrasonic, but the rear shell 4 and the middle frame 1 can not be used after being disassembled, and is difficult to disassemble. In this embodiment, the middle frame 1 and the rear case 4 are detachably connected by a snap structure. The detachable connecting structure has low cost and convenient installation and detachment.
In the present embodiment, the circuit board 3 is a PCB circuit board 3.
As shown in fig. 1 and 5, the waterproof switch further includes a key cap 5 mounted on the middle frame 1.
This embodiment has realized just can satisfying waterproof function requirement with a simple structure, and the cost does not increase basically. One of the assembly methods of the waterproof switch of the embodiment: the key cap 5 on the middle frame 1 is installed and matched, then the conductive rubber 2 is placed, then the PCB is installed, and finally the rear shell 4 is installed through the buckle.
When liquid flows in from the upper surface, most of the liquid is remained in the liquid storage space 21, when the liquid reaches a certain height, the liquid can penetrate from the middle frame 1 and the rear shell 4, because a certain pressure is generated between the vertical plate part 42 and the conductive rubber 2 to form a sealing surface, when the liquid penetrates into the area, the liquid cannot penetrate, and therefore the liquid is prevented from entering the mounting groove 41 where the circuit board 3 is located; similarly, when the liquid is infiltrated from the bottom or the side, it cannot infiltrate into the installation groove 41.
The above description is only for the preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and all equivalent structural changes made by using the contents of the present specification and the drawings can be directly or indirectly applied to other related technical fields and are included in the scope of the present invention.
Claims (9)
1. The utility model provides a switch waterproofing mechanism, its characterized in that, includes center, conductive rubber, circuit board and backshell, the center can be dismantled with the backshell and be connected or welded fastening, the backshell has the mounting groove, conductive rubber's border is taken and is established the upper end at whole mounting groove for prevent to get into from the liquid of top inflow the mounting groove, the circuit board sets up in the mounting groove and is located conductive rubber's below.
2. The switch waterproofing mechanism according to claim 1 wherein a side of said conductive rubber facing away from said circuit board has a liquid storage space.
3. The switch waterproofing mechanism according to claim 1 wherein said rear case has a vertical plate portion forming said mounting groove, and an edge of said conductive rubber is located between the center frame and an upper end of the vertical plate portion.
4. The switch waterproofing mechanism according to claim 3 wherein an upper end of said vertical plate portion presses said conductive rubber for preventing liquid from flowing into said mounting groove from between said vertical plate portion and said conductive rubber.
5. The switch waterproofing mechanism according to claim 3 wherein the edge of the conductive rubber has a first portion which is provided to be overlapped on the upper end surface of the vertical plate portion and a second portion which is provided obliquely downward with respect to the first portion, the second portion being located outside the vertical plate portion.
6. The switch waterproofing mechanism according to claim 5 wherein said first portion is disposed horizontally and said second portion is disposed vertically.
7. The switch waterproofing mechanism according to claim 1 wherein said center frame is removably connected to said rear housing by a snap-fit structure.
8. The switch waterproofing mechanism according to claim 1 wherein said circuit board is a PCB circuit board.
9. A waterproof switch characterized by comprising the waterproof switch mechanism according to any one of claims 1 to 8 and a key cap mounted on a center frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446654.1U CN216719785U (en) | 2021-12-31 | 2021-12-31 | Switch waterproofing mechanism and waterproof switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446654.1U CN216719785U (en) | 2021-12-31 | 2021-12-31 | Switch waterproofing mechanism and waterproof switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216719785U true CN216719785U (en) | 2022-06-10 |
Family
ID=81890124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123446654.1U Active CN216719785U (en) | 2021-12-31 | 2021-12-31 | Switch waterproofing mechanism and waterproof switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216719785U (en) |
-
2021
- 2021-12-31 CN CN202123446654.1U patent/CN216719785U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212696068U (en) | Camera decoration assembly and electronic equipment | |
| CN206273017U (en) | A kind of mainboard waterproof construction and electronic equipment | |
| CN216719785U (en) | Switch waterproofing mechanism and waterproof switch | |
| CN218648049U (en) | Lead-acid battery shell and battery monomer | |
| CN210181212U (en) | Waterproof radar | |
| CN215751932U (en) | Color screen instrument for lithium battery forklift | |
| CN210225608U (en) | Waterproof sealing structure of law enforcement record appearance | |
| CN209413462U (en) | A kind of mute lock body | |
| CN208009076U (en) | A kind of transparency window and washing machine of display screen | |
| CN213991359U (en) | Fan PLC control panel | |
| CN212112159U (en) | Electronic timer of water purifying kettle | |
| CN101303611A (en) | Electronic device with keyboard module | |
| CN215731405U (en) | High-reliability display screen key structure | |
| CN214012788U (en) | Waterproof button structure and electronic equipment | |
| CN215073410U (en) | Casing of temperature controller of electric heating towel rack | |
| CN209947721U (en) | Integral type membrane switch based on injection moulding technique | |
| CN215643491U (en) | Outdoor booth of LED display screen is apart from module | |
| CN213804468U (en) | Composite injection molding panel structure with extremely high performance | |
| CN214410207U (en) | Wireless acousto-optic alarm structure | |
| CN216700969U (en) | Button panel assembly of mower and mower with same | |
| CN214956529U (en) | Electronic device | |
| CN213014499U (en) | Water tank panel circuit board fast-assembling structure | |
| CN217423637U (en) | Gas heater's face-piece assembly and gas heater | |
| CN220672445U (en) | Doorbell button structure | |
| CN214956543U (en) | Mobile terminal's key-press support, button subassembly and mobile terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |