CN216957829U - Reset structure of metal film switch - Google Patents
Reset structure of metal film switch Download PDFInfo
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- CN216957829U CN216957829U CN202122410929.XU CN202122410929U CN216957829U CN 216957829 U CN216957829 U CN 216957829U CN 202122410929 U CN202122410929 U CN 202122410929U CN 216957829 U CN216957829 U CN 216957829U
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- cavity
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- 239000002184 metal Substances 0.000 title claims abstract description 94
- 239000010408 film Substances 0.000 claims description 43
- 239000010409 thin film Substances 0.000 claims description 29
- 239000012528 membrane Substances 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 230000000149 penetrating effect Effects 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 239000002984 plastic foam Substances 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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Abstract
The utility model discloses a reset structure of a metal film switch, which comprises: the edge of the metal film extends downwards to form a cover wall, a first contact end is arranged at the bottom of the cover wall, a first connection end is arranged on the metal film, the cover wall surrounds a first cavity, and a first magnet is arranged in the first cavity; the base, the base edge upwards extends and forms the base wall, be equipped with the lid groove on the base wall, the lid bottom of the groove is equipped with the electrically conductive parts that run through the base, the base wall encloses into the second cavity, second magnet is equipped with in the second cavity, the second magnet with first magnet homopolar relative setting. In the utility model, the magnet replaces an elastic component, and the problems of deformation, fatigue and the like of the magnet cannot occur in use, and the like and the magnets repel each other according to a natural rule, so that the service life of the magnet is long, the stability is good, and the user experience is improved.
Description
Technical Field
The utility model relates to the technical field of switch control, in particular to a reset structure of a metal film switch.
Background
At present, the reset in the metal membrane switch is generally accomplished by elastomeric element, like metal shrapnel, spring etc. in some metal membrane switches frequent occasion of using, like computer keyboard, these elastomeric element are in frequent use, and because of reasons such as plastic deformation, fatigue became invalid for metal membrane switch's the structure that resets became invalid, cause corresponding metal membrane switch sensitivity to reduce, became invalid even, influence user experience.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve at least one technical problem in the prior art, and provides a reset structure of a metal film switch, which has good stability, good sensitivity after frequent use and long service life.
According to some embodiments of the present invention, a reset structure of a metal thin film switch includes:
the edge of the metal film extends downwards to form a cover wall, a first contact end is arranged at the bottom of the cover wall, a first connection end is further arranged on the metal film and can be connected with a circuit, the cover wall surrounds a first cavity, and a first magnet is arranged in the first cavity;
the edge of the base extends upwards to form a base wall, a cover groove is formed in the base wall, the cover wall can be clamped into the cover groove in a matching and movable mode, a conductive part penetrating through the base is arranged at the bottom of the cover groove, one end of the conductive part is arranged at the bottom of the cover groove and is a second contact end, one end of the conductive part is arranged on the outer side of the base and is a second connecting end, the second connecting end can be connected with a circuit, when the cover wall is inserted into the cover groove, the first contact end is in contact with the second contact end, the base wall is surrounded to form a second cavity, a second magnet is arranged in the second cavity, and the second magnet and the first magnet are arranged in a homopolar and opposite mode;
and the connecting part is arranged on the base wall and is used for connecting the cover wall and the cover groove and limiting the cover wall and the cover groove to move up and down relatively within a preset range.
The reset structure of the metal film switch at least has the following beneficial effects: in the embodiment, the elastic component is replaced by a magnet, the first magnet is arranged in the metal film, the second magnet is arranged in the base, the homopolarity of the first magnet and the homopolarity of the second magnet are opposite, a user presses down the keycap, the keycap drives the metal film to move downwards, the repulsion force between the first magnet and the second magnet is overcome, and the first contact end is contacted with the second contact end; when a user releases the keycap, the metal film is pushed open by the base due to the repulsive force between the first magnet and the second magnet, the first contact end and the second contact end are separated, and the keycap moves upwards to reset. Connecting the cover wall and the cover groove by using a connecting part, so that the metal film and the base are within a preset relative distance range, and the metal film is prevented from bouncing off under the action of the repulsive force of the magnet or being extruded due to collision between the metal film and the base when being pressed down; because the magnet can not appear plastic deformation, tired scheduling problem in use, and homopolar repulsion between the magnet is natural law, so the life of magnet is longer than elastomeric element, and stability is better, and long-time use back switch sensitivity is still high, can improve user experience.
According to some embodiments of the utility model, the first connection end and the metal thin film are integrated into a same body. The first connecting end and the metal film are integrated, and the integrated manufacturing is adopted in the manufacturing process, so that the process is simple, and the cost is saved.
According to some embodiments of the utility model, the first contact end is a portion of the cover wall that contacts the second contact end.
According to some embodiments of the utility model, the conductive member is a metal rod disposed at the bottom of the cover groove.
According to some embodiments of the utility model, the reset structure of the metal thin film switch is provided with a through hole at the bottom of the outer side wall of the cover groove, and the metal rod penetrates through the through hole.
According to some embodiments of the utility model, the reset structure of the metal thin film switch is provided with a buffer layer at the bottom of the cover groove. The buffer layer can cushion the metal film that moves down, avoids colliding, extrudeing between lid wall and the lid groove.
According to some embodiments of the utility model, the first cavity has a side wall provided with an annular extension end, and the annular extension end can support the first magnet.
According to some embodiments of the utility model, the second magnet is partially disposed in the second cavity.
According to some embodiments of the present invention, the first magnet and the second magnet are both cylindrical, and a diameter of an upper end surface of the second magnet is smaller than a diameter of a lower end surface of the first magnet. The diameter of the upper end face of the second magnet is smaller than that of the lower section of the first magnet, so that the second magnet can be prevented from colliding and rubbing the cover wall when the metal film switch works.
According to some embodiments of the utility model, the connecting part is a pin, and the pin hole in the cover wall is larger than the diameter of the pin. The pin is simple and practical in structure, the pin hole is larger than the diameter of the pin, and the metal thin film and the base can move up and down relatively within a preset range.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The accompanying drawings are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the example serve to explain the principles of the utility model and do not constitute a limitation thereof.
Fig. 1 is a schematic structural diagram of a reset state of a reset structure of a metal thin film switch according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an on state of a reset structure of a metal thin film switch according to another embodiment of the present invention;
FIG. 3 is an enlarged view of FIG. 2 at A;
fig. 4 is a schematic structural diagram of a reset structure of a metal thin-film switch according to another embodiment of the present invention.
Reference numerals:
a metal thin film 100; a cover wall 110; a first magnet 120; a first contact end 130; an annular extension end 140; a pin 150; a first connection end 160; a pin hole 170;
a base 200; a base wall 210; a cover groove 220; a conductive member 230; a second magnet 240; a buffer layer 250; a second contact end 231; second connection end 232.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, preferred embodiments of which are illustrated in the accompanying drawings, wherein the drawings are provided for the purpose of visually supplementing the description in the specification and so forth, and which are not intended to limit the scope of the utility model.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 and 4, fig. 1 is a schematic structural view of a reset state of a reset structure of a metal thin film switch according to an embodiment of the present invention, and fig. 4 is a schematic structural view of a reset structure of a metal thin film switch according to another embodiment of the present invention, in some embodiments, the reset structure of the metal thin film switch includes a metal thin film 100, a base 200, and a connecting member; the edge of the metal film 100 extends downwards to form a cover wall 110, the cover wall 110 surrounds to form a first cavity, the first magnet 120 is installed in the first cavity, the inner side wall of the first cavity is provided with an annular extending end 140, the annular extending end 140 can support the first magnet 120, the edge of the base 200 extends upwards to form a base wall 210, the base wall 210 surrounds to form a second cavity, the second cavity is internally provided with a second magnet 240, a cover groove 220 is formed in the base wall 210, the cover wall 110 can be clamped into the cover groove 220 in a matching mode, the bottom of the cover wall 110 is provided with a conductive component 230 penetrating through the base 200, and the bottom of the cover groove 220 is further provided with a buffer layer 250; one end of the conductive member 230 is disposed in the cover slot 220 and is a second contact end 231, one end of the conductive member 230 is disposed outside and is a second connection end 232, a portion of the cover wall 110 contacting the second contact end 231 is a first contact end 130, and the metal film 100 is further provided with a first connection end 160 connected to an external circuit; the metal film 100 and the base 200 are both cylindrical, the first magnet 120 and the second magnet 240 are also both cylindrical, the second magnet 240 is partially arranged in the second cavity, and the diameter of the cross section of the second magnet 240 is smaller than that of the cross section of the first magnet 120; the connection member may be a pin 150, and the cover wall 110 and the cover groove 220 are connected by the pin 150, and the pin hole 170 of the cover wall 110 is larger than the cross-section of the pin 150 so that the thin metal film 100 can move up and down within a predetermined range with respect to the base 200. The same poles of the first magnet 120 and the second magnet 240 are opposite to each other, and in the reset state of the reset structure of the metal film switch, because the same poles of the first magnet 120 and the second magnet 240 are opposite to each other, the same poles repel each other, the metal film 100 is jacked up, and the first contact end 130 and the second contact end 231 are separated.
It should be noted that the conductive member 230 may be a metal rod; conductive member 230 may also be a wire; it is understood that the conductive member 230 is used for electrical conduction, and any conductive member may be used, which is not limited herein.
It should be noted that the conductive component 230 may also vertically penetrate through the base 200, in which case the upper end portion of the conductive component 230 is left at the bottom of the cover slot 220 as the second contact end 231, and the lower end portion of the conductive component 230 is left outside as the second connection end 232; there are many ways to arrange the conductive members 230, not illustrated here.
It should be noted that, the metal film 100 and the base 200 may be both triangular and rectangular, and it should be understood that the metal film 100 and the base 200 may have shapes that can be matched with each other.
It should be noted that the first magnet 120 and the second magnet 240 may have a circular cross-section; the first magnet 120 and the second magnet 240 may also be rectangular in cross-section; alternatively, the first magnet 120 may have a circular cross-section and the second magnet 240 may have a rectangular cross-section; it is understood that the first magnet 120 and the second magnet 240 can be in contact with each other in the on state of the reset structure of the metal thin film switch.
It should be noted that the connecting component may also be a bolt, and the bolt hole on the cover wall 110 is larger than the cross section of the bolt, which also can satisfy that the metal film 100 can move up and down relatively within a preset range relative to the base 200; there are many alternatives for the connecting parts, which are not illustrated here.
It should be noted that the buffer layer 250 may be made of plastic foam; the buffer layer 250 can also be sponge; the buffer layer 250 can prevent the cover wall 110 and the cover groove 220 from directly contacting each other to generate friction collision, and the selected material satisfies the above conditions without being limited too much.
Referring to fig. 2 and 4, fig. 2 is a structural diagram illustrating an on state of a reset structure of a metal thin film switch according to another embodiment of the present invention, and fig. 4 is a structural diagram illustrating a reset structure of a metal thin film switch according to another embodiment of the present invention, in some embodiments, the reset structure of a metal thin film switch includes a metal thin film 100, a base 200, and a connecting member; the edge of the metal film 100 extends downwards to form a cover wall 110, the cover wall 110 surrounds to form a first cavity, the first magnet 120 is installed in the first cavity, the inner side wall of the first cavity is provided with an annular extension end 140, the annular extension end 140 can support the first magnet 120, the edge of the base 200 extends upwards to form a base wall 210, the base wall 210 surrounds to form a second cavity, the second cavity is internally provided with a second magnet 240, a cover groove 220 is formed in the base wall 210, the cover wall 110 can be clamped into the cover groove 220 in a matching mode, the bottom of the cover wall 110 is provided with a conductive component 230 penetrating through the base 200, and the bottom of the cover groove 220 is further provided with a buffer layer 250; one end of the conductive member 230 is disposed in the cover slot 220 and is a second contact end 231, one end of the conductive member 230 is disposed outside and is a second connection end 232, a portion of the cover wall 110 contacting the second contact end 231 is a first contact end 130, and the metal film 100 is further provided with a first connection end 160 connected to an external circuit; the metal film 100 and the base 200 are both cylindrical, the first magnet 120 and the second magnet 240 are also both cylindrical, the second magnet 240 is partially arranged in the second cavity, and the diameter of the cross section of the second magnet 240 is smaller than that of the cross section of the first magnet 120; the connection member may be a pin 150, and the cover wall 110 and the cover groove 220 are connected by the pin 150, and the pin hole 170 of the cover wall 110 is larger than the cross-section of the pin 150, so that the thin metal film 100 can move up and down with respect to the base 200 within a predetermined range. The homopolar poles of the first magnet 120 and the second magnet 240 are opposite, and in the opening state of the reset structure of the metal film switch, a user presses down a keycap (not shown in the figure) to drive the metal film 100 to move downwards, so that the repulsion between the first magnet 120 and the second magnet 240 is overcome, and the first contact end 130 is contacted with the second contact end 231.
It should be noted that the conductive member 230 may be a metal rod; conductive member 230 may also be a wire; it is understood that the conductive component 230 is used for conducting electricity, and any component that can conduct electricity is not limited herein.
It should be noted that the conductive component 230 may also vertically penetrate through the base 200, in which case the upper end portion of the conductive component 230 is left at the bottom of the cover slot 220 as the second contact end 231, and the lower end portion of the conductive component 230 is left outside as the second connection end 232; there are many ways how the conductive features 230 may be arranged, not illustrated here.
It should be noted that, the metal film 100 and the base 200 may be both triangular and rectangular, and it should be understood that the metal film 100 and the base 200 may have shapes that can be matched with each other.
It should be noted that the first magnet 120 and the second magnet 240 may have a circular cross section; the first magnet 120 and the second magnet 240 may also be rectangular in cross-section; alternatively, the first magnet 120 may have a circular cross-section and the second magnet 240 may have a rectangular cross-section; it is understood that the first magnet 120 and the second magnet 240 can be contacted, if the reset structure of the metal thin film switch is in an on state.
It should be noted that the connecting component may also be a bolt, and the bolt hole on the cover wall 110 is larger than the cross section of the bolt, which also can satisfy the requirement that the metal film 100 can move up and down relatively within a preset range relative to the base 200; there are many more options for connecting the components, not illustrated here.
It should be noted that the buffer layer 250 may be made of plastic foam; the buffer layer 250 can also be sponge; the buffer layer 250 can prevent direct contact and friction collision between the cover wall 110 and the cover groove 220, and the selected material satisfies the above conditions without any limitation.
Referring to fig. 3, fig. 3 is an enlarged view of a in fig. 2, in some embodiments, a cover groove 220 is formed in the base wall 210, the cover wall 110 can be fitted into the cover groove 220, a conductive member 230 penetrating through the base 200 is disposed at the bottom of the cover wall 110, and a buffer layer 250 is further disposed at the bottom of the cover groove 220; one end of the conductive member 230 is disposed in the cover slot 220 and is a second contact end 231, one end of the conductive member 230 is disposed outside and is a second connection end 232, a portion of the cover wall 110 contacting the second contact end 231 is a first contact end 130, and the metal film 100 is further provided with a first connection end 160 connected to an external circuit. When the reset structure of the metal thin film switch is in an on state, the first contact terminal 130 is in contact with the second contact terminal 231.
It should be noted that the buffer layer 250 may be made of plastic foam; the buffer layer 250 can also be sponge; the buffer layer 250 can prevent direct contact and frictional collision between the cover wall 110 and the cover groove 220, and the selected material may satisfy the above conditions, which is not limited to the above.
It should be noted that the conductive member 230 may be a metal rod; conductive member 230 may also be a wire; it is understood that the conductive member 230 is used for electrical conduction, and any conductive member may be used, which is not limited herein.
It should be noted that the conductive component 230 may also vertically penetrate through the base 200, in which case the upper end portion of the conductive component 230 is left at the bottom of the cover slot 220 as the second contact end 231, and the lower end portion of the conductive component 230 is left outside as the second connection end 232; there are many ways to arrange the conductive members 230, not illustrated here.
It should be noted that the connecting component may also be a bolt, and the bolt hole on the cover wall 110 is larger than the cross section of the bolt, which also can satisfy the requirement that the metal film 100 can move up and down relatively within a preset range relative to the base 200; there are many alternatives for the connecting parts, which are not illustrated here.
Referring to fig. 1, 2 and 3, fig. 1 is a schematic diagram illustrating a reset state structure of a metal thin film switch according to an embodiment of the present invention, fig. 2 is a schematic diagram illustrating an open state structure of a reset structure of a metal thin film switch according to another embodiment of the present invention, fig. 3 is an enlarged view of a position a of fig. 2, in some embodiments, the reset structure of the metal thin film switch is applied to the metal thin film switch, a keycap (not shown) is installed at an upper end of the metal thin film 100, a circuit board (not shown) is connected to a lower end of the base 200, an output end of the circuit board is connected to a second connection end 232, the first connection end 160 is connected to an input end of the circuit board, when the reset structure of the metal thin film switch is in a reset state, since like poles of the first magnet 120 and the second magnet 240 are opposite to each other, the metal thin film 100 is lifted, the first contact end 130 is separated from the second contact end 231, the input end and the output end of the circuit board are disconnected; when the reset structure of the metal film switch is in an open state, a user presses down the keycap to overcome the repulsive force between the first magnet 120 and the second magnet 240, the keycap drives the metal film 100 to move downwards, the first contact end 130 is contacted with the second contact end 231, and the input end of the circuit board is communicated with the output end; replace elastomeric element with magnet, magnet can not produce fatigue and plastic deformation because of the frequent use of metal film switch's the structure that resets, and magnet stable in structure for the metal film switch's of this embodiment the structure that resets longe-lived, stability is good.
In the description of the present specification, reference to a description of the term "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or | some examples ", etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A reset structure of a metal thin film switch is characterized by comprising:
the circuit structure comprises a metal film (100), wherein the edge of the metal film (100) extends downwards to form a cover wall (110), a first contact end (130) is arranged at the bottom of the cover wall (110), a first connecting end (160) is further arranged on the metal film (100), the first connecting end (160) can be connected with a circuit, the cover wall (110) surrounds a first cavity, and a first magnet (120) is arranged in the first cavity;
a base (200), the edge of the base (200) extends upwards to form a base wall (210), a cover groove (220) is arranged on the base wall (210), the cover wall (110) can be clamped into the cover groove (220) in a matching and movable manner, the bottom of the cover groove (220) is provided with a conductive part (230) which penetrates through the base (200), one end of the conductive part (230) is arranged at the bottom of the cover groove (220) and is a second contact end (231), one end of the conductive component (230) is arranged outside the base (200) and is a second connecting end (232), the second connecting end (232) can be connected with a circuit, when the cover wall (110) is inserted into the cover groove (220), the first contact end (130) is contacted with the second contact end (231), the base wall (210) encloses a second cavity, a second magnet (240) is arranged in the second cavity, the second magnet (240) is arranged opposite to the first magnet (120) in the same pole;
the connecting part is arranged on the base wall (210) and used for connecting the cover wall (110) and the cover groove (220) and limiting the cover wall (110) and the cover groove (220) to move up and down relatively within a preset range.
2. The reset structure of a metal membrane switch according to claim 1, wherein the first connection end (160) is a same body with the metal membrane (100).
3. The reset structure of a metal film switch according to claim 1, wherein said first contact end (130) is a portion of said cover wall (110) contacting said second contact end (231).
4. The reset structure of a metal membrane switch according to claim 1, wherein said conductive member (230) is a metal rod disposed at the bottom of said cover groove (220).
5. The structure of claim 4, wherein a through hole is formed at the bottom of the outer sidewall of the cover groove (220), and the metal rod penetrates through the through hole.
6. The structure for resetting a metal thin film switch according to any one of claims 1 to 5, wherein a buffer layer (250) is disposed at the bottom of the cover groove (220).
7. The reset structure of a metal membrane switch according to claim 1, wherein the first cavity sidewall is provided with an annular extension end (140), and the annular extension end (140) can support the first magnet (120).
8. The reset structure of a metal membrane switch according to claim 1, wherein said second magnet (240) is partially disposed in said second cavity.
9. The reset structure of a metal membrane switch according to claim 1, wherein the first magnet (120) and the second magnet (240) are both cylindrical, and the diameter of the upper end surface of the second magnet (240) is smaller than that of the lower end surface of the first magnet (120).
10. The structure of claim 1, wherein the connecting member is a pin (150), and the pin hole (170) of the cover wall (110) is larger than the diameter of the pin (150).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410929.XU CN216957829U (en) | 2021-09-30 | 2021-09-30 | Reset structure of metal film switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122410929.XU CN216957829U (en) | 2021-09-30 | 2021-09-30 | Reset structure of metal film switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216957829U true CN216957829U (en) | 2022-07-12 |
Family
ID=82302101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122410929.XU Expired - Fee Related CN216957829U (en) | 2021-09-30 | 2021-09-30 | Reset structure of metal film switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216957829U (en) |
-
2021
- 2021-09-30 CN CN202122410929.XU patent/CN216957829U/en not_active Expired - Fee Related
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Granted publication date: 20220712 |