CN220085888U - Light touch button switch - Google Patents
Light touch button switch Download PDFInfo
- Publication number
- CN220085888U CN220085888U CN202321741347.2U CN202321741347U CN220085888U CN 220085888 U CN220085888 U CN 220085888U CN 202321741347 U CN202321741347 U CN 202321741347U CN 220085888 U CN220085888 U CN 220085888U
- Authority
- CN
- China
- Prior art keywords
- pin
- button switch
- tact
- button
- metal reed
- 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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Links
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 39
- 229910052751 metal Inorganic materials 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims description 11
- 239000003292 glue Substances 0.000 claims description 10
- 238000007731 hot pressing Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 2
- 239000012528 membrane Substances 0.000 claims 5
- 239000010408 film Substances 0.000 abstract description 33
- 239000010409 thin film Substances 0.000 abstract description 13
- 239000012535 impurity Substances 0.000 abstract description 12
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 238000000748 compression moulding Methods 0.000 abstract description 4
- 230000002035 prolonged effect Effects 0.000 abstract description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010292 electrical insulation Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005476 soldering Methods 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Push-Button Switches (AREA)
Abstract
The utility model relates to a touch button switch, which comprises a shell, an upper cover, a button, a metal reed, a first pin and a second pin, wherein the shell is provided with an inner cavity, the metal reed is arranged in the inner cavity, the button is arranged in the inner cavity in a vertical sliding way, a film piece is further arranged between the button and the metal reed, and the film piece is matched with the peripheral wall of the inner cavity. External impurities can only enter the tact button switch through the gap between the button and the upper cover, then a film piece is arranged between the button and the metal reed, the film piece is matched with the peripheral wall of the inner cavity, even if impurities enter the tact button switch, the impurities can be blocked by the film piece and cannot enter the lower part of the metal reed, so that the electric contact points of the pins and the metal reed are difficult to corrode, the service life of the tact button switch is greatly prolonged, the film piece adopts a very thin film piece to be formed through compression molding, the use of the tact button switch is basically not influenced, and the cost is extremely little increased.
Description
Technical Field
The utility model relates to the technical field of push-button switches, in particular to a touch push-button switch.
Background
The touch button switch is a common micro switch, the common size is 6×6mm, the micro switch generally comprises a shell, an upper cover, two pins, a metal reed and a button, the metal reed has certain elasticity, the button is jacked up at ordinary times, when the button is pressed downwards, the top of the metal reed is deformed and sagged, the two pins are conducted, the button is loosened, the metal reed and the button are reset, and one triggering action is completed, and the micro switch can be specifically referred to in Chinese patent application with publication number CN1061300A and name of "button switch". In general, the touch button switch is fixed on a circuit board through soldering tin, in the soldering tin process, some vaporific impurities with strong viscosity (such as soldering flux, board washing water and the like) enter the inside of the switch, corrosion can be generated on electric contact points (silver coatings) of pins and metal reeds, in the normal use process, the touch button switch is affected by the environment, some dust enters the inside of the switch, corrosion can be generated on the electric contact points, the service life of the design of the conventional touch button switch is generally difficult to achieve, and the touch button switch needs to be improved.
Disclosure of Invention
In order to solve the technical problems that the electric contact points of the existing touch button switch are easy to corrode and the service life is difficult to meet the design requirement, the utility model provides the touch button switch.
The technical scheme provided by the utility model is as follows: the utility model provides a dab button switch, includes casing, upper cover, button, metal reed, first pin and second pin are with the integrative injection moulding of form of inserts with the casing, the casing is equipped with the inner chamber, the inside electrical contact point of first pin and second pin exposes from the diapire of inner chamber, the metal reed sets up in the inner chamber, the button sets up in the inner chamber with sliding from top to bottom, be equipped with the through-hole on the upper cover, the top of button exposes the through-hole, still be equipped with the film piece between button and the metal reed, film piece and the perisporium assorted of inner chamber.
Through the technical scheme, the first pin and the second pin are integrally injection molded with the shell in the form of the insert, external impurities can only enter the inside of the touch button switch through gaps between the button and the upper cover and between the upper cover and the shell, then the thin film sheet is arranged between the button and the metal reed and matched with the peripheral wall of the inner cavity, even if impurities enter the inside of the touch button switch in the welding process or the normal use process, the impurities can be blocked by the thin film sheet and cannot enter the lower part of the metal reed, so that corrosion is difficult to occur to the electric contact points of the pins and the metal reed, the service life of the touch button switch is greatly prolonged, the thin film sheet is formed by compression molding, the use of the touch button switch is basically not influenced, and the cost is extremely low.
Preferably, the material of the film piece is a PI film.
By adopting the technical scheme, the PI film has excellent high and low temperature resistance and electrical insulation, and can be used for a long time in high and low temperature environments.
Preferably, the film piece is also provided with back glue, and the back glue is adhered to the top of the metal reed.
By adopting the technical scheme, before the button is assembled, the film sheet can be prevented from being accidentally pulled out, and after the button is assembled, the upper surface of the metal reed can be protected.
Preferably, the film sheet is an arc-shaped surface.
By adopting the technical scheme, the arc-shaped surface has the advantages that the diameter can be increased when the arc-shaped surface is pressed downwards to deform, and the protection effect can be better.
Preferably, the film sheet has a thickness of 0.05mm to 0.2mm.
By adopting the technical scheme, the film sheet has certain hardness, is convenient to be placed into the inner cavity, has proper elasticity, is not easy to generate plastic deformation, and can be used for a long time.
Preferably, four positioning glue columns are arranged around the upper end face of the shell, four fixing holes are correspondingly formed in the upper cover, the positioning glue columns are inserted into the fixing holes, and the upper cover is fixed on the shell through a hot pressing process.
By adopting the technical scheme, the process is simple, the safety and the reliability are realized, and gaps are hardly generated between the upper cover and the shell.
Preferably, the lower end of the button is provided with a shaft shoulder, and the diameter of the shaft shoulder is larger than that of the through hole and is used for preventing the button from falling out of the inner cavity.
Preferably, a protrusion is further arranged in the middle of the lower end face of the button, so that the contact area between the protrusion and the film piece is reduced.
By adopting the technical scheme, the periphery of the film piece can keep certain degree of freedom and elasticity, and the inner cavity can be better sealed.
Preferably, the first pin comprises two outer pins and one inner electric contact point, the second pin comprises two outer pins and two inner electric contact points, the inner electric contact point of the first pin is positioned in the middle of the two inner electric contact points of the second pin, and the metal reed is in constant contact with the two inner electric contact points of the second pin and is always disconnected from the inner electric contact points of the first pin.
By adopting the technical scheme, when the button is pressed down, the metal reed is downwards recessed by the bulge on the bottom surface of the button and is electrically conducted with the internal electric contact point of the first pin, so that the first pin and the second pin are electrically conducted.
In summary, the present utility model includes at least one of the following beneficial technical effects:
1. the thin film sheet is matched with the peripheral wall of the inner cavity, even if impurities enter the inside of the touch button switch, the impurities can be blocked by the thin film sheet and cannot enter the lower part of the metal reed, so that the electric contact points of the pins and the metal reed are difficult to corrode, the service life of the touch button switch is greatly prolonged, the thin film sheet is formed by compression molding, the use of the touch button switch is basically not influenced, and the cost is extremely low;
2. the thin film sheet adopts a PI thin film, has excellent high and low temperature resistance and electrical insulation, and can be used for a long time in a high and low temperature environment.
Drawings
FIG. 1 is a perspective view of a touch button switch according to an embodiment of the utility model;
FIG. 2 is a top view of a touch button switch according to an embodiment of the utility model;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a top view showing the positional relationship of the first lead, the second lead and the housing according to the embodiment of the utility model;
fig. 5 is an exploded view of the tact push button switch according to the embodiment of the present utility model.
Reference numerals illustrate: 1. a housing; 11. an inner cavity; 12. positioning a rubber column; 2. an upper cover; 21. a through hole; 22. a fixing hole; 3. a button; 31. a shaft shoulder; 32. a protrusion; 4. a metal reed; 5. a first pin; 51. an internal electrical contact; 52. an outer pin; 6. a second pin; 61. an internal electrical contact; 62. an outer pin; 7. a sheet of film.
Detailed Description
The utility model is described in further detail below with reference to fig. 1-5.
Referring to fig. 1 to 3, an embodiment of the present utility model discloses a tact button switch, which comprises a housing 1, an upper cover 2, a button 3, a metal reed 4, a first pin 5 and a second pin 6, wherein the first pin 5 and the second pin 6 are integrally injection molded with the housing 1 in the form of an insert, the housing 1 is provided with an inner cavity 11, internal electrical contacts 51 and 61 of the first pin 5 and the second pin 6 are exposed from the bottom wall of the inner cavity 11, the metal reed 4 is arranged in the inner cavity 11, the button 3 is arranged in the inner cavity 11 in a sliding manner up and down, a through hole 21 is arranged on the upper cover 2, the top of the button 3 is exposed out of the through hole 21, a film 7 is further arranged between the button 3 and the metal reed 4, and the film 7 is matched with the peripheral wall of the inner cavity 11.
Referring to fig. 3, the material of the film sheet 7 is a PI film, and the PI film is named as a polyimide film, has excellent high and low temperature resistance, electrical insulation, adhesion, radiation resistance and dielectric resistance, can be used for a long time in a high and low temperature environment, and is particularly suitable for being used as a flexible printed circuit board substrate and various high temperature resistant motor electrical appliance insulating materials; the film sheet 7 is also provided with a back adhesive, the back adhesive is adhered to the top of the metal reed 4, before the button 3 is assembled, the film sheet 7 can be prevented from being accidentally separated, and after the button is assembled, the upper surface of the metal reed 4 can be protected; the film piece 7 is an arc-shaped surface, the diameter of the arc-shaped surface can be increased when the film piece is pressed downwards to deform, a good protection effect can be kept, the thickness of the film piece 7 is preferably 0.05mm-0.2mm, certain hardness is provided in the thickness range, the film piece is convenient to put into the inner cavity 11, the film piece is suitable in elasticity, and plastic deformation is not easy to generate.
Referring to fig. 5, four positioning glue posts 12 are disposed around the upper end surface of the housing 1, four fixing holes 22 are correspondingly disposed on the upper cover 2, the positioning glue posts 12 are inserted into the fixing holes 22, and the upper cover 2 is fixed on the housing 1 through a hot pressing process. The process is simple, safe and reliable, and almost no gap is generated between the upper cover 2 and the shell 1.
Referring to fig. 3, a shoulder 31 is disposed at the lower end of the button 3, and the diameter of the shoulder 31 is larger than that of the through hole 21, so as to prevent the button 3 from being removed from the inner cavity 11. The middle part of the lower end surface of the button 3 is also provided with a bulge 32 for reducing the contact area with the film sheet 7, so that the periphery of the film sheet 7 can keep certain degree of freedom and elasticity, and the inner cavity 11 can be better sealed.
Referring to fig. 4, the first lead 5 includes two outer leads 52 and one inner electrical contact point 51, the second lead 6 includes two outer leads 62 and two inner electrical contact points 61, the inner electrical contact point 51 of the first lead 5 is located at the middle of the two inner electrical contact points 61 of the second lead 6, and the metal reed 4 is in constant contact with the two inner electrical contact points 61 of the second lead 6 and is always disconnected from the inner electrical contact points 51 of the first lead 5. When the button 3 is depressed, the protrusion 32 on the bottom surface of the button 3 depresses the metal reed 4 downward and electrically communicates with the internal electrical contact 51 of the first lead 5, thereby electrically communicating the first lead 5 and the second lead 6.
According to the utility model, the first pin 5 and the second pin 6 are integrally injection molded with the shell 1 in the form of an insert, external impurities can only enter the inside of the switch of the tact button 3 through gaps between the button 3 and the upper cover 2 and between the upper cover 2 and the shell 1, then the thin film sheet 7 is arranged between the button 3 and the metal reed 4, the thin film sheet 7 is matched with the peripheral wall of the inner cavity 11, and even if impurities enter the inside of the switch of the tact button 3 in the welding process or the normal use process, the impurities are blocked by the thin film sheet 7 and cannot enter the lower part of the metal reed 4, so that corrosion is difficult to occur to the electric contact points of the pins and the metal reed 4, the service life of the switch of the tact button 3 is greatly prolonged, the thin film sheet 7 is formed by compression molding, the use of the switch of the tact button 3 is basically not influenced, and the cost is increased little.
The above embodiments are not intended to limit the scope of the present utility model, so: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.
Claims (9)
1. The utility model provides a dab button switch, its characterized in that, including casing (1), upper cover (2), button (3), metal reed (4), first pin (5) and second pin (6) are with the integrative injection moulding of casing (1) in the form of inserts, casing (1) is equipped with inner chamber (11), the inside electrical contact point of first pin (5) and second pin (6) exposes from the diapire of inner chamber (11), metal reed (4) set up in inner chamber (11), button (3) set up in inner chamber (11) with sliding from top to bottom, be equipped with through-hole (21) on upper cover (2), the top of button (3) exposes through-hole (21), still be equipped with film piece (7) between button (3) and the metal reed (4), film piece (7) and the perisporium phase-match of inner chamber (11).
2. The tact push button switch according to claim 1, characterized in that the material of the membrane sheet (7) is PI membrane.
3. The tact push button switch according to claim 1, wherein the film sheet (7) is further provided with a back glue, and the back glue is adhered to the top of the metal reed (4).
4. The tact push button switch according to claim 1, characterized in that the membrane sheet (7) is an arc-shaped surface.
5. The tact push button switch according to claim 1, characterized in that the thickness of the membrane sheet (7) is 0.05mm-0.2mm.
6. The tact button switch according to any one of claims 1 to 5, wherein four positioning glue posts (12) are provided around the upper end surface of the housing (1), four fixing holes (22) are provided in the upper cover (2) correspondingly, the positioning glue posts (12) are inserted into the fixing holes (22), and the upper cover (2) is fixed on the housing (1) through a hot pressing process.
7. The tact push button switch according to claim 6, wherein the lower end of the push button (3) is provided with a shoulder (31), the diameter of the shoulder (31) is larger than the diameter of the through hole (21) for preventing the push button (3) from being separated from the inner cavity (11).
8. The tact push button switch according to claim 7, wherein the middle part of the lower end surface of the push button (3) is further provided with a protrusion (32) for reducing the contact area with the membrane sheet (7).
9. The tact push button switch according to claim 6, wherein the first pin (5) comprises two outer pins and one inner electrical contact, the second pin (6) comprises two outer pins and two inner electrical contacts, the inner electrical contact of the first pin (5) is located in the middle of the two inner electrical contacts of the second pin (6), and the metal reed (4) is in constant contact with the two inner electrical contacts of the second pin (6) and is in constant disconnection with the inner electrical contacts of the first pin (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321741347.2U CN220085888U (en) | 2023-07-04 | 2023-07-04 | Light touch button switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321741347.2U CN220085888U (en) | 2023-07-04 | 2023-07-04 | Light touch button switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220085888U true CN220085888U (en) | 2023-11-24 |
Family
ID=88816967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321741347.2U Active CN220085888U (en) | 2023-07-04 | 2023-07-04 | Light touch button switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220085888U (en) |
-
2023
- 2023-07-04 CN CN202321741347.2U patent/CN220085888U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |