CN111696807B - Push-button switch - Google Patents
Push-button switch Download PDFInfo
- Publication number
- CN111696807B CN111696807B CN201910179748.5A CN201910179748A CN111696807B CN 111696807 B CN111696807 B CN 111696807B CN 201910179748 A CN201910179748 A CN 201910179748A CN 111696807 B CN111696807 B CN 111696807B
- Authority
- CN
- China
- Prior art keywords
- fixed terminal
- button switch
- wall
- insulating body
- accommodating cavity
- 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.)
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/10—Bases; Stationary contacts mounted thereon
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
Landscapes
- Push-Button Switches (AREA)
Abstract
A button switch comprises an insulating body, a terminal assembly and a dustproof sheet covering the insulating body, wherein the insulating body is provided with a bottom wall and a peripheral wall which protrudes out of the periphery of the bottom wall and forms an accommodating cavity with the bottom wall, the dustproof sheet is fixedly arranged on the upper end face of the peripheral wall to cover the accommodating cavity, the terminal assembly is fixedly arranged on the insulating body and is provided with a contact part exposed in the accommodating cavity and a welding part extending out of the bottom wall, the peripheral wall is provided with an inner wall positioned in the accommodating cavity and an outer wall opposite to the inner wall, and the peripheral wall penetrates through the inner wall and the outer wall to form a groove for communicating the accommodating cavity with the outside. The upper end face of the peripheral wall is provided with the open slot which is used for communicating the containing slot with the outside, so that negative pressure cannot be formed in the containing cavity in the cooling process after the button switch is heated when the button switch is used for welding a plate, and therefore scaling powder cannot be sucked into the containing cavity through a gap between the terminal component and the insulating body, and the button switch cannot be conducted.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a push button switch, and more particularly, to a push button switch that is capable of contacting and separating with and from a fixed terminal by pressing a metal plate.
[ background of the invention ]
Chinese patent publication No. CN101364492A discloses a push-button switch, which includes an insulating body having an accommodating cavity, a fixed terminal fixed to the insulating body and having a contact portion exposed in the accommodating cavity, a metal sheet accommodated in the accommodating cavity and contacting the fixed terminal after being pressed, and a dust-proof sheet fixedly disposed on an upper end surface of the insulating body to seal the accommodating cavity. However, when the button switch is used for welding the plate, negative pressure is formed in the accommodating cavity in the cooling process after the button switch is heated, and the soldering flux can be sucked into the accommodating cavity, so that the button switch cannot be conducted.
Accordingly, there is a need for an improved push button switch that overcomes this drawback.
[ summary of the invention ]
The invention aims to provide a button switch which can ensure the electrical property when welding a plate and is simple to manufacture.
The purpose of the invention is realized by the following technical scheme: a button switch comprises an insulating body, a terminal assembly and a dustproof sheet covering the insulating body, wherein the insulating body is provided with a bottom wall and a peripheral wall which protrudes out of the periphery of the bottom wall and forms an accommodating cavity with the bottom wall, the dustproof sheet is fixedly arranged on the upper end face of the peripheral wall to cover the accommodating cavity, the terminal assembly is fixedly arranged on the insulating body and is provided with a contact part exposed in the accommodating cavity and a welding part extending out of the bottom wall, the peripheral wall is provided with an inner wall positioned in the accommodating cavity and an outer wall opposite to the inner wall, and the peripheral wall penetrates through the inner wall and the outer wall to form a notch for communicating the accommodating cavity with the outside.
Further, the slot is formed by being recessed downward from the upper end surface of the peripheral wall.
Further, the depth of the groove from top to bottom is 0.1mm.
Further, the slot is substantially in a V-shaped structure.
Furthermore, the terminal assembly comprises a metal sheet and a fixed terminal provided with the contact part and the welding part, the fixed terminal and the insulating body are integrally formed, the metal sheet is arranged in the accommodating cavity from top to bottom and positioned above the fixed terminal, and the metal sheet is pressed downwards to be in contact with the contact part of the fixed terminal.
Furthermore, the bottom wall is provided with a pressing hole for pressing the fixed terminal by an external mold core so as to form the insulating body.
Further, the terminal assembly includes a fixed terminal and a metal sheet disposed above the fixed terminal, the fixed terminal includes a first fixed terminal and a second fixed terminal, the metal sheet includes a dome-shaped central portion and a ring portion located at a periphery of the central portion, the contact portion includes a first contact portion disposed on the first fixed terminal and a second contact portion disposed on the second fixed terminal, the welding portion includes a first welding portion disposed on the first fixed terminal and a second welding portion disposed on the second fixed terminal, the ring portion is in normal contact with the first contact portion of the first fixed terminal, and the central portion is pressed downward and then contacts with the second contact portion of the second fixed terminal.
Further, the first contact portions are arranged in a pair, and the second contact portion is arranged between the pair of first contact portions.
Furthermore, the position of the dustproof sheet corresponding to the central part is provided with a bulge part which protrudes upwards and is used for the central part to abut against.
Further, the metal sheet is a sheet structure made of a stainless steel material.
Compared with the prior art, the invention has the following beneficial effects: because the upper end face of the circumferential wall is provided with the open slot for communicating the containing slot with the outside, negative pressure cannot be formed in the containing cavity in the cooling process after the button switch is heated when the button switch is used for welding a plate, so that soldering flux cannot be sucked into the containing cavity through a gap between the terminal component and the insulating body, and the button switch cannot be conducted.
[ description of the drawings ]
Fig. 1 is a perspective view of the push switch of the present invention.
Fig. 2 is a perspective view of fig. 1 from another perspective.
Fig. 3 is an exploded perspective view of the push button switch of the present invention.
Fig. 4 is a further exploded perspective view of the push button switch of fig. 3.
Fig. 5 is a perspective view of fig. 4 from another perspective.
Fig. 6 isbase:Sub>A cross-sectional view taken along linebase:Sub>A-base:Sub>A of fig. 1.
Fig. 7 is a schematic view of the metal sheet of fig. 6 after being pressed downward.
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
[ detailed description ] embodiments
Referring to fig. 1 to 7, a push button switch 100 of the present invention includes an insulating housing 1, a terminal assembly 2, and a dust-proof sheet 3 covering the insulating housing.
The insulation body 1 includes a bottom wall 11 and a peripheral wall 12 protruding from the peripheral side of the bottom wall 11 and forming a containing cavity 10 with the bottom wall 11, and the dust-proof sheet 3 is fixedly disposed on an upper end surface 120 of the peripheral wall 12 to cover the containing cavity 10. The terminal assembly 2 is held in the insulating housing 1 and has a contact portion 201 exposed in the receiving cavity 10 and a welding portion 202 extending out of the bottom wall 11. In the present invention, the terminal assembly 2 includes a metal member 22 having an inner diameter corresponding to the inner diameter of the housing cavity 10, and a fixed terminal 21 having the contact portion 201 and the soldering portion 202, the fixed terminal 21 is integrally formed with the insulating body 1, the metal sheet 22 is installed in the housing cavity 10 from top to bottom and positioned above the fixed terminal 21, and the metal sheet 22 is pressed downward to contact with the contact portion 201 of the fixed terminal 21. Specifically, the fixed terminal 21 includes a first fixed terminal 211 and a second fixed terminal 212, the contact portion 201 includes a first contact portion 2111 provided to the first fixed terminal 211 and a second contact portion 2121 provided to the second fixed terminal 212, and the soldering portion 202 includes a first soldering portion 2112 provided to the first fixed terminal 211 and a second soldering portion 2122 provided to the second fixed terminal 212. The metal sheet 22 is substantially circular, but not limited thereto, the metal sheet 22 specifically includes a dome-shaped central portion 221 and a ring portion 222 located at a peripheral edge of the central portion 221, the ring portion 222 of the metal sheet 22 is in normal contact with the first contact portion 2111 of the first fixed terminal 211, and the central portion 221 of the metal sheet 22 is pressed downward and then is in contact with the second contact portion 2121 of the second fixed terminal 212. The position of the dust-proof sheet 3 corresponding to the central portion 221 is provided with a raised portion 31 protruding upward and allowing the central portion 221 to abut against, that is, the raised portion 31 of the dust-proof sheet 3 is higher than the region outside the periphery of the raised portion 31, so that a good pressing feeling of the push button switch 100 can be provided, and the raised portion 31 is pressed to drive the central portion 221 to move downward so that the central portion 221 contacts with the second contact portion 2121.
It should be noted that, in the present invention, the metal sheet 22 is a sheet structure made of stainless steel, but may be made of other metal materials, but it is required to ensure good resilience. The peripheral wall 12 of the receiving cavity 11 has an inner wall 101 located inside the receiving cavity 10 and an outer wall 102 opposite to the inner wall 101, the inner wall 101 is outwardly recessed with a pair of recesses 1011, and a pair of the first contact portions 2111 held on the bottom wall 11 are respectively at least partially disposed on the pair of recesses 1011. The bottom surface 110 of the bottom wall 11 is provided with a pressing hole 1101 for an external mold (not shown) to press the fixed terminal 21 to form the insulation body 1.
The receiving cavity 10 of the present invention is covered by the dust-proof sheet 3 to achieve dust-proof, and there are some small gaps between the fixed terminal 21 and the insulating body 1, such as the joint of the fixed terminal 21 and the insulating body 1 or the pressing hole 1201, so that, when the push-button switch 100 is soldered on a circuit board (not shown), in order to avoid negative pressure in the receiving cavity 10 of the insulating body 1 and further to suck flux into the receiving cavity 10 through the gaps during the heating and cooling process of the push-button switch 100, so that the push-button switch 100 cannot be conducted, the peripheral wall 12 of the push-button switch 100 of the present invention penetrates through the inner wall 101 and the outer wall 102 to form the slot 121 communicating the receiving cavity 10 with the outside, thereby effectively avoiding negative pressure in the receiving cavity 10. Preferably, the slot 121 is formed by being recessed downward from the upper end surface 120 of the peripheral wall 12, but the slot 121 may also be a hole formed below the upper end surface of the peripheral wall 12. In the invention, the depth of the recess of the slot 121 from top to bottom is 0.1mm. In order to prevent external dust from entering the receiving cavity 10 from the slot 121 when the receiving cavity 10 is under negative pressure, the slot 121 may have a substantially V-shaped structure or other curved shapes.
The button switch 100 of the present invention has the notch 121 disposed on the peripheral wall 12 for communicating the accommodating cavity 10 with the outside, so as to prevent the flux from being sucked into the accommodating cavity 10 through the gap due to negative pressure formed in the accommodating cavity 10, and in addition, the notch 121 of the V-shaped structure can effectively prevent external dust from entering the accommodating cavity 10. The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.
Claims (10)
1. A button switch comprises an insulating body, a terminal assembly and a dustproof sheet covering the insulating body, wherein the insulating body is provided with a bottom wall and a peripheral wall which protrudes from the periphery of the bottom wall and forms an accommodating cavity with the bottom wall, the dustproof sheet is fixedly arranged on the upper end surface of the peripheral wall to cover the accommodating cavity, the terminal assembly is fixedly arranged on the insulating body and is provided with a contact part exposed in the accommodating cavity and a welding part extending out of the bottom wall, and the button switch is characterized in that: the peripheral wall is provided with an inner wall positioned in the accommodating cavity and an outer wall opposite to the inner wall, the peripheral wall penetrates through the inner wall and the outer wall to form a groove for communicating the accommodating cavity with the outside, and the groove is used for preventing negative pressure from being formed in the accommodating cavity of the insulating body and further sucking soldering flux during welding of the welding part into the accommodating cavity through a gap between the terminal component and the insulating body.
2. The push button switch of claim 1, wherein: the slot is formed by downwards sinking from the upper end surface of the peripheral wall.
3. The push button switch of claim 2, wherein: the depth of the groove from top to bottom is 0.1mm.
4. The push button switch of claim 2, wherein: the slot is substantially V-shaped.
5. The push button switch of claim 1, wherein: the terminal assembly comprises a metal sheet and a fixed terminal with the contact part and the welding part, the fixed terminal and the insulating body are integrally formed, the metal sheet is arranged in the accommodating cavity from top to bottom and is positioned above the fixed terminal, and the metal sheet is pressed downwards to be in contact with the contact part of the fixed terminal.
6. The push button switch of claim 5, wherein: the bottom wall is provided with a pressing hole for pressing the fixed terminal by an external mold core so as to form the insulating body.
7. The push button switch of claim 5, wherein: the terminal assembly comprises a fixed terminal and a metal sheet arranged above the fixed terminal, the fixed terminal comprises a first fixed terminal and a second fixed terminal, the metal sheet comprises a dome-shaped central part and a ring part positioned on the periphery of the central part, the contact part comprises a first contact part arranged on the first fixed terminal and a second contact part arranged on the second fixed terminal, the welding part comprises a first welding part arranged on the first fixed terminal and a second welding part arranged on the second fixed terminal, the ring part is in normal contact with the first contact part of the first fixed terminal, and the central part is pressed downwards and then is in contact with the second contact part of the second fixed terminal.
8. The push button switch of claim 7, wherein: the first contact portions are arranged in a pair, and the second contact portions are arranged between the pair of first contact portions.
9. The push button switch of claim 7, wherein: and a bulge part which protrudes upwards and is used for the central part to abut against is arranged at the position of the dustproof sheet corresponding to the central part.
10. The push button switch of claim 5, wherein: the metal sheet is a sheet structure made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910179748.5A CN111696807B (en) | 2019-03-11 | 2019-03-11 | Push-button switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910179748.5A CN111696807B (en) | 2019-03-11 | 2019-03-11 | Push-button switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111696807A CN111696807A (en) | 2020-09-22 |
| CN111696807B true CN111696807B (en) | 2023-03-24 |
Family
ID=72474520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910179748.5A Active CN111696807B (en) | 2019-03-11 | 2019-03-11 | Push-button switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111696807B (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009043609A (en) * | 2007-08-09 | 2009-02-26 | Alps Electric Co Ltd | Push-button switch |
| CN201302939Y (en) * | 2008-10-27 | 2009-09-02 | 富士康(昆山)电脑接插件有限公司 | Button switch |
| JP2012199182A (en) * | 2011-03-23 | 2012-10-18 | Panasonic Corp | Push-on switch |
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2019
- 2019-03-11 CN CN201910179748.5A patent/CN111696807B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111696807A (en) | 2020-09-22 |
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