CN107112156B - Tact switch for electronic component - Google Patents
Tact switch for electronic component Download PDFInfo
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- CN107112156B CN107112156B CN201580064795.5A CN201580064795A CN107112156B CN 107112156 B CN107112156 B CN 107112156B CN 201580064795 A CN201580064795 A CN 201580064795A CN 107112156 B CN107112156 B CN 107112156B
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- 229920001721 polyimide Polymers 0.000 description 1
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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
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
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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
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- Push-Button Switches (AREA)
Abstract
The invention relates to a light touch switch for electronic components, which comprises: an upper pattern and a lower pattern each formed of a plate-shaped conductor having a predetermined thickness and capable of being energized; an insulating plate formed of an electrically non-conductive insulator positioned between the upper pattern and the lower pattern; and a dome switch provided on an upper portion of the upper pattern, a circular electrode portion provided at a center of the upper pattern, the electrode portion being formed to protrude at the center of the upper pattern by etching a peripheral portion of the electrode portion, a pair of corresponding end points of a circular surface of the electrode portion being connected to each other such that a first electrode and a second electrode having different polarities are formed to be bilaterally symmetrical about the connection, and the pair of corresponding end points of the circular surface of the electrode portion being connected to each other such that the corrosion is generated by the etching.
Description
Technical Field
The present invention relates to a tact switch for electronic components capable of performing Surface Mount Technology (SMT) on a circuit board, and more particularly, to a tact switch for electronic components having a high button contact ratio, easy assembly, and a significantly reduced fraction defective when an electronic component button key is pressed.
Background
As is well known, a tact switch for electronic components performs an opening and closing operation of an electric circuit by a slight contact, has advantages of precision and easiness in the opening and closing operation of the electric circuit and a simple structure, and is a typical switch used for various modern electronic products and the like.
Recently, portable communication devices mainly used for cellular phones and the like, which are being miniaturized, and various miniaturized notebooks, portable boxes, MP3 and the like, which are being increasingly sharpened and miniaturized, and the like, the tact switch is also being developed as a Printed Circuit Board (PCB) type tact switch having a small weight and size and a thin thickness.
According to the prior art, a tact switch for electronic parts capable of performing a surface mounting technique on a circuit board is disclosed in korean patent No. 10-1208261, and the tact switch for electronic parts of this patent has the following technical structure.
Fig. 1 shows an example of a conventional tact switch, in which fig. 1a is an exploded perspective view of the tact switch, fig. 1b is an assembled cross-sectional view of fig. 1a, and fig. 1c is an assembled external perspective view of fig. 1 a.
According to the attached drawings, the structure of the tact switch comprises: a pattern assembly 100 having a flat plate shape with a predetermined thickness; a dome switch 120 (hereinafter, referred to as a metal dome) is provided on the upper portion of the pattern assembly, the pattern assembly 100 is composed of a first electrode pattern 102 and a second electrode pattern 103 which are symmetrical with each other about an insulating portion 101 which is provided across the center, and a plurality of electrode terminals 102a and 103a are provided at both ends of the first electrode pattern 102 and the second electrode pattern 103. The first electrode pattern 102 supplied with power from the first electrode terminal 102a and the second electrode pattern 103 supplied with power from the second electrode terminal 103a have different polarities from each other.
As can be seen from this structure, when the metal dome 120 is pressed, the pattern assembly 100 may be simultaneously connected to the first electrode pattern 102 and the second electrode pattern 103 around the insulating portion 101, and according to fig. 1a, the insulating portion 101 crossing the center of the pattern assembly 100 has a zigzag shape bent (zigzag) in the left-right direction along the axis of the insulating portion 101 near the center of the pattern assembly 100 where the first electrode pattern 102 and the second electrode pattern 103 are in contact with each other.
Further, an insulating film 160 and an elastic lead 110 are sequentially disposed between the pattern assembly 100 and the metal dome 120, and according to fig. 1b, the insulating film 160 covering the first electrode pattern 102 and the second electrode pattern 103 is first attached to the upper surface of the pattern assembly 100. The insulating film 160 has a through hole 161 in the center thereof, and the diameter of the through hole 161 is smaller than that of the metal dome 120, and preferably, the through hole at least partially surrounds a middle portion bent and bent in the left-right direction of the insulating portion 101.
As described above, when the metal dome 120 is disposed on the insulating film 160, the peripheral end of the metal dome 120 is positioned outside the through hole 161 and is in an insulating state, and when the metal dome 120 is pressed by clicking a button key of the electronic component, the first electrode and the second electrode are electrically connected. A lower cover film 130 is attached to the lower portion of the pattern assembly 100, and an upper cover film 140 is attached to the upper portion of the pattern assembly 100. In addition, a protrusion boss 150 is attached to an upper portion of the metal dome 120, that is, an upper portion of the metal dome 120 to which the upper cover film 140 is attached, so that the contact with the metal dome 120 is enhanced when a button key of an electronic component is pressed, thereby increasing the button connection rate of the electronic component and improving the click rate or click feeling.
However, in the above structure of the tact switch, the first electrode pattern and the second electrode pattern are formed on the same plane, and the bent and bent middle portion of the first electrode pattern and the second electrode pattern is formed on the plane, so that even if a protruding boss is added to the upper portion of the metal dome, it is practically difficult to completely eliminate the contact failure (energization failure).
Disclosure of Invention
Technical problem to be solved by the invention
The present invention has been made to solve the above-described conventional problems, and an object of the present invention is to provide an airtight and waterproof tact switch for electronic components, which is easy to assemble, has a smooth pressing operation of a metal dome when a button key of an electronic component is pressed, has an increased contact point ratio or energization ratio of a button of an electronic component, has a significantly reduced contact point failure, and has an increased click rate and click feeling.
Technical scheme
In accordance with the above-described technical problem, the present invention provides a tact switch for electronic components, comprising: an upper pattern and a lower pattern each formed of a plate-shaped conductor having a predetermined thickness and capable of being energized; an insulating plate formed of an electrically non-conductive insulator positioned between the upper pattern and the lower pattern; and a dome switch provided on an upper portion of the upper pattern, a circular electrode portion provided at a center of the upper pattern, the electrode portion being formed to protrude from the center of the upper pattern by etching a peripheral portion of the electrode portion, a pair of corresponding end points of a circular surface of the electrode portion being connected to each other such that a first electrode and a second electrode having different polarities are formed to be bilaterally symmetrical about the connection, the pair of corresponding end points of the circular surface of the electrode portion being connected to each other such that the corrosion is generated by the etching, the connection being an insulating portion for electrically insulating the first electrode and the second electrode, the insulating portion being inserted into a region of the first electrode and a region of the second electrode from a virtual diameter line connecting the two end points of the circular surface of the electrode portion so as to alternately extend in a direction of the first electrode and a direction of the second electrode, and thus has a multi-meandering curved form, the first electrode and the second electrode each including an extending portion which extends in sequence in mutually opposite directions through an insulating portion and has a form of being engaged with each other with the insulating portion as a center, the insulating portion connected in the meandering form between the first electrode and the second electrode such that both ends thereof are connected to the outside of the electrode portion, that is, to the surface of the etched upper pattern, the lower pattern forming the insulating portion by crossing between a plurality of through holes formed at an imaginary longitudinal center line and spaced apart vertically, the first electrode and the second electrode being arranged vertically opposite to each other with the insulating portion as a center, a plurality of electrode terminals having different polarities being provided at respective corresponding ends of the first electrode and the second electrode, the plurality of electrode terminals being connected to each other via the plurality of electrode terminals, the first electrode and the second electrode of the lower pattern have different polarities from each other.
Advantageous effects
According to the structural characteristics, the light touch switch for the electronic component of the invention enhances the water resistance and the air tightness, thereby preventing poor contact or short circuit caused by foreign matters, further improving the contact rate (power supply rate) of the button of the electronic component and prolonging the actual service life of the product. Furthermore, when the button key of the electronic component is pressed, the contact between the button key and the dome switch is enhanced, the contact rate and the current carrying rate of the button of the electronic component are improved, the smooth pressing operation of the dome switch is realized, and the like, and the click rate and the click feeling of the button key of the electronic component are enhanced.
Drawings
Fig. 1 is a diagram showing an example of a conventional tact switch for electronic components.
Fig. 2 is an exploded perspective view illustrating components of a tact switch for electronic parts according to a first embodiment of the present invention.
Fig. 3 is a perspective view of a plurality of components shown in fig. 2 in a partially assembled state.
Fig. 4 is a cross-sectional view taken along line i-i of fig. 3a and line ii-ii of fig. 3 b.
Fig. 5 is a cross-sectional view taken along the line i 'of fig. 3a and the line ii' of fig. 3 b.
Fig. 6 is an exploded perspective view illustrating components of a tact switch for electronic parts according to a second embodiment of the present invention.
Fig. 7 is a perspective view of a plurality of components shown in fig. 6 in a partially assembled state.
Fig. 8 is a cross-sectional view taken along line iii-iii of fig. 7a and line iv-iv of fig. 7 b.
Fig. 9 is a cross-sectional view of lines iii '-iii' of fig. 7a and iv '-iv' of fig. 7 b.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
First, in describing the present invention, the drawings and descriptions of the following embodiments are omitted except for necessary portions, the same reference numerals are given to the same or similar components throughout the specification, and the detailed description thereof is omitted without being repeated.
Embodiment mode 1
Fig. 2 to 5 show a plurality of constituent elements of a tact switch for electronic components according to a first embodiment of the present invention and a combination form of the constituent elements, and the tact switch for electronic components according to the present embodiment includes: an upper pattern 200 formed of a conductive body having a plate shape and a predetermined thickness, which can be energized; a lower pattern 220 formed of a conductive body having a plate shape and a predetermined thickness, which can be energized; an insulating plate 230 formed of a non-conductive insulator positioned between the upper pattern and the lower pattern; and a dome switch 240 (hereinafter, referred to as a metal dome) disposed on the upper portion of the upper pattern.
In fig. 2, a circular electrode portion 210 is provided at the center of the upper pattern 200, and the electrode portion 210 is formed in a protruding manner at the center of the upper pattern 200 by etching (etching) the peripheral portion of the electrode portion 210 to generate corrosion.
Any corresponding end points of the circular surfaces of the electrode parts 210 are connected to each other such that the first electrode 211 and the second electrode 212 having different polarities are formed in left-right symmetry with this as a center. Both ends of the circular surface may be connected in such a manner that corrosion is generated by etching, and the connecting portion thus formed is an insulating portion 213 for electrically insulating the first electrode 211 and the second electrode 212.
Preferably, the insulating part 213 alternately enters the region of the first electrode 211 and the region of the second electrode 212 from a virtual diameter line connecting both end points of the circular surface of the electrode part 210, whereby the insulating part 213 extends in the direction of the first electrode 211 and the second electrode 212 to have a substantially curved form that is at least bent a plurality of times. In this case, the first electrode 211 and the second electrode 212 have extending portions 211a and 212a, respectively, the extending portions 211a and 212a extend in sequence in directions facing each other through the insulating portion 213, and the extending portions 211a and 212a are maintained in a state of being substantially engaged with each other around the insulating portion 213. The insulating part 213 connected in a meandering fashion between the first electrode 211 and the second electrode 212 has both ends thereof connected to the outside of the electrode part 210, i.e., to the surface of the etched upper pattern 200.
The shape of the upper pattern 200 increases the number of contacts or connection area of the first electrode 211 and the second electrode 212 connected to each other by the metal dome 240 when the metal dome 240 is pressed down by clicking a button key of the electronic component, thereby enhancing the electrical connection rate and reducing connection defects.
The first electrode 211 and the second electrode 212 of the upper pattern 200 have at least one through hole 211b, 212b on each side symmetrical to each other about the insulating portion 213, and the through holes 211b, 212b communicate with the through holes 221b, 222b formed in the first electrode 221 and the second electrode 222 of the lower pattern 220, which will be described below, respectively. Preferably, the through holes 211b, 212b, 221b, and 222b formed in the first and second electrodes 211 and 212 of the upper pattern 200 and the first and second electrodes 221 and 222 of the lower pattern 220 are formed to face each other on the virtual longitudinal center lines of the upper and lower patterns 200 and 220, respectively, and accordingly, the upper pattern 200 makes both end portions of the insulating portion 213 inclined to one side of the through holes 211b and 212b, so that the first and second electrodes 221 and 222 have an inclined form as a whole inclined with the virtual center line as a reference.
The lower pattern 220 forms an insulating portion 223 by crossing between a plurality of through holes 221b and 222b formed at intervals in the virtual longitudinal centerline, and the first electrode 221 and the second electrode 222 are arranged to face each other in the vertical direction around the insulating portion 223. The insulating portion 223 may be formed by etching, as in the case of the upper pattern 200 described above. A plurality of electrode terminals 221a and 222a having different polarities are respectively provided at corresponding ends of the first electrode 221 and the second electrode 222, and the first electrode 221 and the second electrode 222 of the lower pattern 220 have different polarities from each other by the plurality of electrode terminals 221a and 222 a.
In the present embodiment, the plurality of electrode terminals 221a and 222a are formed at the respective ends of the lower pattern 220 in the longitudinal direction, and are formed in an arc shape along the cut-out portion of the arc shape formed at the corresponding ends. In this case, it is preferable that a plurality of cutouts in the form of circular arcs are formed at the lengthwise corresponding ends of the upper pattern 200, the upper cover film 270, the lower cover film 280, the guide film 260, and the level difference film 250, corresponding to the respective cutouts formed at the lengthwise corresponding ends of the lower pattern 220.
The upper pattern 200 and the lower pattern 220 are formed of a non-conductive insulator having a predetermined thickness through the insulating plate 230, and the first electrodes 211 and 221 and the second electrodes 212 and 222 are electrically connected to each other in the vertical direction through the through holes 211b, 221b, 212b and 222b to form one circuit pattern, and the first electrodes 211 and 221 have the same polarity and the second electrodes 212 and 222 have the same polarity through the through holes 211b, 221b, 212b and 222b communicating with each other through the insulating plate 230.
In this embodiment, the description will be mainly made by connecting the electrode terminal 221a of the first electrode 221 provided in the lower pattern 220 to an anode (+) power source and connecting the electrode terminal 222a of the second electrode 222 provided in the lower pattern 220 to a cathode (-) power source. In this case, the first electrode 221 is an anode, and the second electrode 222 is a cathode.
The metal dome 240 is formed of a material that can be elastically bent when the electronic component button is clicked, and preferably has a size such that, when mounted on the upper pattern 200, the protruding upper portion of the metal dome 240 covers the electrode portion 210 at the center of the upper pattern 200, that is, all of the first electrode 211 and the second electrode 212.
According to the present embodiment, the components of the electronic component tact switch include, in addition to the upper pattern 200, the lower pattern 220, the pattern assembly formed of the insulating plate 230, and the metal dome 240: a height difference film 250 between the upper pattern 200 and the metal dome 240; a guide film 260 for guiding the metal dome 240 and surrounding the periphery thereof to protect the same; an upper cover film 270 for covering an upper portion of the tact switch of the present invention; and a lower cover film 280 for covering a lower portion of the tact switch of the present invention.
The level difference film 250 is used to provide a predetermined level difference between the metal dome 240 and the upper pattern 200, the metal dome 240 is disposed around a through hole 251 formed in the center of the level difference film 250, and when the metal dome 240 disposed on the surface of the level difference film 250 is pressed by an external force, the protruding upper portion of the metal dome 240 connects the first electrode 211 and the second electrode 212 of the upper pattern 200 through the through hole 251 of the level difference film 250. The height difference film 250 further enhances the click rate or click feeling of the metal dome 240, prevents friction between the metal dome 240 and the upper pattern 200, and prolongs the life of the tact switch.
The guide film 260 is provided on the upper portion of the level difference film 250 around the metal dome 240 to have a predetermined thickness, and preferably has a protection hole 261 having a predetermined diameter for receiving the metal dome 240 formed in the center thereof to guide the attachment of the metal dome 240 and prevent the detachment thereof. The conductive film 260 may be formed of a metal plate or a film paper having a predetermined thickness.
The upper cover film 270 and the lower cover film 280 cover the upper and lower portions of the tact switch for electronic components of the present invention, respectively, thereby achieving a dustproof effect of blocking foreign substances such as dust falling from the upper portion of the upper pattern 200 to which the upper cover film 270 is attached, and a complete waterproof effect of blocking moisture or humidity penetrating through the plurality of through holes 221b and 222b from the lower portion of the lower pattern 220 to which the lower cover film 280 is attached.
Preferably, the upper pattern 200 and the lower pattern 220 of the present embodiment use a plate-like member of a conductive metal or nonmetal. Further, when the upper cover film 270, the lower cover film 280, the level difference film 250, and the conductive film 260 are made of a film material, the film is preferably made of an electrically insulating material, and a material such as a conventional PI film or a polyimide film (kapton film) may be used. Of course, the lower cover film 280 may be implemented by a method of performing screen printing or the like on the lower pattern 220.
In addition, the tact switch of the present invention further has a protruding boss 290, and the protruding boss 290 is located at the upper portion of the metal dome 240. The protrusion 290 has a predetermined thickness such that the protrusion 290 improves the contact between the button key (not shown) of the electronic component and the metal dome 240, and increases the button connection rate and click feeling when the button key of the electronic component is pressed after the tact switch is assembled. When the tact switch is assembled, the protruding boss 290 may be located at a lower portion of the upper cover film 270 as shown in fig. 3a, or the protruding boss 290 may be located at an upper portion of the upper cover film 270 as shown in fig. 3 b.
In particular, when the protrusion boss 290 is positioned between the upper cover film 270 and the metal dome 240, a predetermined space is formed therebetween to exhibit the elasticity inherent to the metal dome 240, and in this case, when a button key of an electronic component is pressed, the metal dome 240 is operated smoothly, so that a click rate or a click feeling can be provided according to or better than a case where the protrusion boss 290 is positioned on the upper portion of the upper cover film 270.
The tact switch for electronic components of the present invention including the plurality of components described above can be assembled by selectively combining the plurality of components according to the purpose of use. The concrete description is as follows.
Fig. 3 is a perspective view of a partially assembled state of a plurality of components shown in fig. 2, fig. 4 is a sectional view taken along line i-i of fig. 3a and line ii-ii of fig. 3b, and fig. 5 is a sectional view taken along line i '-i' of fig. 3a and line ii '-ii' of fig. 3 b.
According to fig. 3 to 5, in the assembly of the tact switch for electronic components, the upper pattern 200 and the lower pattern 220 are integrally joined via the insulating plate 230. At this time, the upper pattern 200 and the lower pattern 220 are electrically connected between the plurality of first electrodes 211 and 221 through the plurality of via holes 211b and 221b, and are electrically connected between the plurality of second electrodes 212 and 222 through the plurality of via holes 212b and 222 b. A level difference film 250 is attached to the surface of the upper pattern 200 surrounding the electrode portion 210, and a metal dome 240 is attached to the upper surface of the level difference film 250.
When mounted on the upper surface of the level difference film 250, the metal dome 240 covers the first and second electrodes 211 and 212 of the upper pattern 200 and the through holes 211b and 212b of the electrodes through the through holes 251 of the level difference film 250. When the electronic component button key is clicked, the metal dome 240 is elastically bent, and the protruding upper portion thereof is simultaneously connected to the first electrode 211 and the second electrode 212 of the upper pattern 200 through the through hole 251 of the level difference film 250, whereby the first electrode 211 and the second electrode 212 are electrically connected to each other, and an electrical conduction state is established.
The light touch switch for electronic component of the present invention assembled as described above enhances the contact between the button key and the metal dome when pressing the button key of the electronic component, thereby improving not only the contact ratio and the current carrying ratio of the button of the electronic component but also the click feeling and the click ratio of the button key of the electronic component. The tact switch for electronic parts of the present invention has high dustproof and waterproof properties, and when the button key of the electronic part is clicked to press the metal dome downward, the number of contacts or the connection area of the first electrode and the second electrode of the upper pattern connected to each other by the metal dome is increased, thereby increasing the electrical connection rate and reducing the connection failure.
Embodiment mode 2
Fig. 6 to 9 show a plurality of constituent elements and their combination of a tact switch for electronic components according to a second embodiment of the present invention, and the tact switch for electronic components provided in the present embodiment includes: an upper pattern 200' formed of a conductive material having a plate shape and a predetermined thickness, which can be energized; a lower pattern 220' formed of a conductive material having a plate shape and a predetermined thickness, which can be energized; an insulating plate 230' formed of an electrically non-conductive insulator positioned between the upper pattern and the lower pattern; and a dome switch 240 (hereinafter, referred to as a metal dome) disposed on the upper portion of the upper pattern.
Embodiment 2 is substantially different from embodiment 1 in the shapes of the upper pattern 200 ', the lower pattern 220 ', and the insulating plate 230 '.
Referring to fig. 6, the lower pattern 220' forms an insulating portion 223 by crossing between a plurality of through holes 221b and 222b formed in a vertically spaced manner on a virtual longitudinal centerline, and the first electrode 221 and the second electrode 222 are disposed to face each other vertically around the insulating portion 223. A plurality of electrode terminals 221a and 222a having different polarities are provided at corresponding ends of the first electrode 221 and the second electrode 222, respectively, and the plurality of electrode terminals 221a and 222a protrude and extend outward at corresponding ends in the longitudinal direction of the lower pattern 220'. In this case, it is preferable that portions having the same shape as the electrode terminals 221a and 222a are protruded and extended outward at the corresponding ends in the longitudinal direction of the upper pattern 200 ' and the insulating plate 230 ', corresponding to the electrode terminals 221a and 222a of the lower pattern 220 '. The other structures of the upper pattern 200 ', the lower pattern 220 ', and the insulating plate 230 ' are substantially the same as those of embodiment 1. The difference between the level difference film 250 ', the conductive film 260', and the upper cover film 270 'and the embodiment 1 is that the arc cut portions formed at the corresponding ends in the longitudinal direction are all removed, and the plurality of electrode terminals 221a and 222a of the lower pattern 220', and the plurality of extended portions of the upper pattern 200 'and the insulating plate 230' corresponding thereto are all formed in a rectangular shape exposed to the outside. Also, the lower cover film 280 'has a portion concavely cut so that each electrode terminal 221a, 222a of the lower pattern 220' is exposed in a manner connectable with a terminal pattern printed on a printed circuit board.
In this embodiment, the tact switch may further have a protruding boss 290, and the protruding boss 290 is located on the upper portion of the metal dome 240. The protruding boss 290 is used to improve the contact between a button key (not shown) of an electronic component and the metal dome 240, and may be located at a lower portion of the upper cover film 270 'as shown in fig. 7a, or may be located at an upper portion of the upper cover film 270' as shown in fig. 7b, when the tact switch is assembled.
Fig. 7 is a perspective view showing a partially assembled state of a plurality of components shown in fig. 6, fig. 8 is a sectional view taken along the line iii-iii of fig. 7a and the line iv-iv of fig. 7b, and fig. 9 is a sectional view taken along the line iii ' -iii ' of fig. 7a and the line iv ' -iv of fig. 7b, in which an upper pattern 200 ' and a lower pattern 220 ' are integrally joined to each other via an insulating plate 230 ', the upper pattern 200 ' and the lower pattern 220 ' are electrically connected to each other, and the electrical connection relationship between the first electrode 211 and the second electrode 212 of the upper pattern 200 ' operated by a metal dome 240 is substantially the same as that of embodiment 1.
While various embodiments and modes of operation of the present invention have been described above, the above description is intended to be only a part of the preferred embodiments of the present invention. Therefore, it is obvious to those skilled in the art that various modifications can be made without departing from the spirit of the invention within the scope of the claims.
Claims (9)
1. A tact switch for electronic parts, comprising:
an upper pattern and a lower pattern each formed of a plate-shaped conductor having a predetermined thickness and capable of being energized;
an insulating plate formed of an electrically non-conductive insulator between the upper pattern and the lower pattern;
a dome switch disposed on an upper portion of the upper pattern; and
a height difference film between the upper pattern and the dome switch for providing a prescribed height difference between the dome switch and the upper pattern,
a circular electrode portion is provided at the center of the upper pattern,
etching a peripheral portion of the electrode portion to generate etching so that the electrode portion is protrudingly formed at a center of the upper pattern,
a pair of corresponding end points of the circular surface of the electrode part are connected to each other such that a first electrode and a second electrode different in polarity are formed in bilateral symmetry with the connection as a center,
and the connection is a first insulating portion for electrically insulating the first electrode and the second electrode,
the first insulating portion has both ends connected to the outside of the electrode portion, i.e., to the surface of the etched upper pattern,
the electrode portion formed so as to protrude from the upper pattern is accommodated in the through hole of the level difference film.
2. The tact switch for electronic parts according to claim 1,
connecting a pair of corresponding end points of the circular surface of the electrode part in such a manner that corrosion is generated by etching, the first insulating part alternately entering a region of the first electrode and a region of the second electrode from a virtual diametrical line connecting both end points of the circular surface of the electrode part and extending in the direction of the first electrode and the second electrode, respectively, to have a multi-meandering curved form.
3. The tact switch for electronic parts according to claim 2,
the first electrode and the second electrode respectively include extension portions, the extension portions sequentially extend in mutually opposite directions through a first insulating portion, and are in a form of being fastened to each other with the first insulating portion as a center.
4. The tact switch for electronic parts according to claim 1,
the lower pattern forms a second insulating portion by crossing between a plurality of through holes formed at intervals in an imaginary longitudinal center line, the first electrode and the second electrode of the lower pattern are arranged to face each other vertically around the second insulating portion, a plurality of electrode terminals having different polarities are provided at corresponding ends of the first electrode and the second electrode of the lower pattern, respectively, and the first electrode and the second electrode of the lower pattern have different polarities from each other via the plurality of electrode terminals.
5. The tact switch for electronic parts according to claim 4,
the first and second electrodes of the upper pattern have at least one through hole on each side symmetrical to each other with respect to a first insulating portion, the through holes communicate with the through holes of the first and second electrodes formed in the lower pattern, respectively, the through holes of the first and second electrodes formed in the upper pattern and the first and second electrodes formed in the lower pattern are formed to face each other on a virtual longitudinal center line of the upper and lower patterns, and accordingly, both end portions of the first insulating portion of the upper pattern are inclined to one side of the through holes so that the first and second electrodes of the upper pattern have an inclined form as a whole with respect to the virtual longitudinal center line.
6. The tact switch for electronic components according to claim 5, further comprising:
and a guide film which is provided on the upper portion of the level difference film around the dome switch so as to have a predetermined thickness, and which has a protective hole having a predetermined diameter and capable of accommodating the dome switch formed in the center thereof so as to guide the attachment of the dome switch and prevent the detachment thereof.
7. The tact switch for electronic parts according to claim 5,
further comprising:
an upper cover film for covering an upper portion of the tact switch;
a lower cover film for covering a lower portion of the tact switch; and
a protruding boss disposed at a predetermined thickness on the dome switch to improve the contact between the button keys of the electronic component and the dome switch and provide a good click rate or click feeling,
when the tact switch is assembled, the protruding boss is disposed at a lower portion or an upper portion of the upper cover film.
8. The tact switch for electronic parts according to claim 5,
the dome switch is provided around the through hole of the level difference film, is made of a material that can be elastically bent when an electronic component is clicked on a button, and has a size such that the protruding upper portion of the dome switch can completely cover the electrode portion in the center of the upper pattern, that is, the first electrode and the second electrode of the upper pattern when the dome switch is mounted on the upper pattern.
9. The tact switch for electronic parts according to claim 4,
the plurality of electrode terminals are formed in an arc shape along cut portions of an arc shape formed at the end portions corresponding to the longitudinal direction of the lower pattern, the cut portions are formed at least at the upper pattern and the insulating plate so as to correspond to the cut portions formed at the end portions corresponding to the longitudinal direction of the lower pattern, or the plurality of electrode terminals are formed in a shape protruding and extending outward at the end portions corresponding to the longitudinal direction of the lower pattern, and portions having the same shape as the plurality of electrode terminals are formed in a shape protruding and extending outward at the end portions corresponding to the longitudinal direction of the upper pattern and the insulating plate so as to correspond to the electrode terminals formed at the end portions corresponding to the longitudinal direction of the lower pattern.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2014-0167191 | 2014-11-27 | ||
| KR1020140167191A KR101516297B1 (en) | 2014-11-27 | 2014-11-27 | Tact switch for electronic component |
| PCT/KR2015/011377 WO2016085133A1 (en) | 2014-11-27 | 2015-10-27 | Tact switch for electronic component |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107112156A CN107112156A (en) | 2017-08-29 |
| CN107112156B true CN107112156B (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580064795.5A Active CN107112156B (en) | 2014-11-27 | 2015-10-27 | Tact switch for electronic component |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101516297B1 (en) |
| CN (1) | CN107112156B (en) |
| WO (1) | WO2016085133A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108450012A (en) * | 2015-07-03 | 2018-08-24 | 奥金斯电子有限公司 | Test jack, test jack manufacturing method and test jack clamp assembly |
| CN108493025A (en) * | 2018-05-21 | 2018-09-04 | 深圳市志金电子有限公司 | A kind of touch base plate and preparation method thereof |
| KR102622090B1 (en) | 2020-02-27 | 2024-01-09 | 주식회사 시노펙스 | A method of manufacturing the boss film of dom switch |
| KR102208147B1 (en) * | 2020-03-10 | 2021-01-27 | 한승섭 | Printed circuit board with doom switch and method for fabricating the same |
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|---|---|---|---|---|
| CN2932599Y (en) * | 2006-07-31 | 2007-08-08 | 苏州华杰电子有限公司 | Light-contact switch |
| KR101112211B1 (en) * | 2010-12-27 | 2012-03-13 | 주식회사 삼일테크놀리지 | Tact switch for electronic component |
| KR20120041065A (en) * | 2010-10-20 | 2012-04-30 | 권순길 | Tact switch for electronic component |
| CN202268274U (en) * | 2011-10-18 | 2012-06-06 | 黄家聪 | Waterproof tact switch |
| KR101204085B1 (en) * | 2011-08-08 | 2012-11-28 | 권순길 | Tact switch for electronic component |
| CN103026441A (en) * | 2010-07-28 | 2013-04-03 | 李昌昊 | PCB tact switch |
| KR101324068B1 (en) * | 2013-05-07 | 2013-11-11 | 주식회사 성지테크 | Dome switch and the method of manufacturing thereof |
| KR20130123057A (en) * | 2012-05-02 | 2013-11-12 | 김창동 | Tact switch for electronic component |
| KR101412659B1 (en) * | 2012-11-27 | 2014-08-12 | 주식회사 한영아이피 | Smd dome switch of sealed construction |
-
2014
- 2014-11-27 KR KR1020140167191A patent/KR101516297B1/en active Active
-
2015
- 2015-10-27 CN CN201580064795.5A patent/CN107112156B/en active Active
- 2015-10-27 WO PCT/KR2015/011377 patent/WO2016085133A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2932599Y (en) * | 2006-07-31 | 2007-08-08 | 苏州华杰电子有限公司 | Light-contact switch |
| CN103026441A (en) * | 2010-07-28 | 2013-04-03 | 李昌昊 | PCB tact switch |
| KR20120041065A (en) * | 2010-10-20 | 2012-04-30 | 권순길 | Tact switch for electronic component |
| KR101112211B1 (en) * | 2010-12-27 | 2012-03-13 | 주식회사 삼일테크놀리지 | Tact switch for electronic component |
| KR101204085B1 (en) * | 2011-08-08 | 2012-11-28 | 권순길 | Tact switch for electronic component |
| CN202268274U (en) * | 2011-10-18 | 2012-06-06 | 黄家聪 | Waterproof tact switch |
| KR20130123057A (en) * | 2012-05-02 | 2013-11-12 | 김창동 | Tact switch for electronic component |
| KR101412659B1 (en) * | 2012-11-27 | 2014-08-12 | 주식회사 한영아이피 | Smd dome switch of sealed construction |
| KR101324068B1 (en) * | 2013-05-07 | 2013-11-11 | 주식회사 성지테크 | Dome switch and the method of manufacturing thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101516297B1 (en) | 2015-05-04 |
| CN107112156A (en) | 2017-08-29 |
| WO2016085133A1 (en) | 2016-06-02 |
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