CN107633972A - A kind of construction of switch and electronic equipment - Google Patents
A kind of construction of switch and electronic equipment Download PDFInfo
- Publication number
- CN107633972A CN107633972A CN201710947489.7A CN201710947489A CN107633972A CN 107633972 A CN107633972 A CN 107633972A CN 201710947489 A CN201710947489 A CN 201710947489A CN 107633972 A CN107633972 A CN 107633972A
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- Prior art keywords
- pad
- wiring layer
- switch
- metal dome
- annular
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Abstract
The invention belongs to electronic technology field, there is provided a kind of construction of switch and electronic equipment.The structure includes：There is substrate, the first wiring layer and the second wiring layer being separated by with the substrate, the hoop to include for the hoop of metal dome and multiple settings on circuit boards, the circuit board：Signal inner ring, including the first pad being printed on first wiring layer；Signal outer shroud, including two or more are printed on the second pad on first wiring layer, second pad and the first pad electrical isolation；And protection ring, including two or more is printed on the 3rd pad on first wiring layer, each 3rd pad and first pad and the second pad electrical isolation, and second pad is interspersed to form annular locus with the 3rd pad；Can effectively solve the problems, such as that protection level present in existing construction of switch is low, sensitivity is not high and easily causes false triggering by the present invention.
Description
Technical field
The invention belongs to electronic technology field, more particularly to a kind of construction of switch and electronic equipment.
Background technology
Switch is widely used, wherein switch is realized as a kind of basic electronic device in electronic circuit
Major function is：The conducting and shut-off of control circuit, at present construction of switch mainly realized using metal dome in circuit board different
Connection and disconnection between electrical equipment, because metal dome has the use of good conduction property, resilience stabilization and overlength
The advantages that life-span, metal dome play irreplaceable important function in construction of switch.In actual application, metal dome
Single layer structure and double-decker can be divided into, when the metal clips in the metal dome is by pressed by external force, the center of the shell fragment
Point is recessed, and the recessed portion of the shell fragment touches the electrical equipment in circuit board, so as to the line conduction on circuit board.
In existing construction of switch, in order to prevent by force destruction of the construction of switch by external force, described construction of switch
Frequently include and signal inner ring, signal outer shroud and protection ring on circuit boards is set, just under running conditions, signal inner ring
Realized and be electrically connected by metal dome with signal outer shroud, the circuit normally on circuit board is worked；When the construction of switch
During by extraneous violence damage, signal inner ring or signal outer shroud are connected by metal dome with protection ring, so as to trigger circuit board
In alarm and protection circuit, prevent that other force devices are by even more serious damage in circuit board.In the prior art, open
The outside that the protection ring in structure is arranged on signal outer shroud and signal inner ring is closed, or protection ring is arranged on signal outer shroud and letter
Between number inner ring, it can thus be concluded that, at least there are the following problems for existing construction of switch：
If the 1, protection ring to be arranged on to the outside of signal outer shroud and signal inner ring, metal dome is difficult to touch protection ring,
False triggering is avoided, but when the construction of switch is destroyed by less external force, metal dome may be not turned in signal
Ring and protection ring or signal outer shroud and protection ring, the alarm and protection that only larger external shakedown could be in triggers circuit plate
Circuit, therefore such a construction of switch protection level is relatively low, sensitivity is low；If the 2nd, protection ring is arranged in signal outer shroud and signal
Between ring, then metal dome easily touches protection ring, and so as to the alarm and protection circuit in triggers circuit plate, protection level is high, spirit
Sensitivity is high, but the minimum disturbance of external environment may also can make protection ring and signal inner ring or protection ring and signal outer shroud phase
Short circuit, easily cause false triggering.
The content of the invention
The present invention provides a kind of construction of switch and electronic equipment, it is intended to solves existing construction of switch and is broken in the extraneous violence of reply
Bad when, the problem of protection level is low, sensitivity is low or easily causes false triggering.
First aspect present invention provides construction of switch, including metal dome and multiple hoops set on circuit boards, institute
Stating circuit board, there is substrate, the first wiring layer and the second wiring layer being separated by with the substrate, the hoop to include：
Signal inner ring, including the first pad being printed on first wiring layer；
Signal outer shroud, including two or more are printed on the second pad on first wiring layer, more than two described
Second pad enclose outside first pad and with the signal inner ring electrical isolation, each second pad by located at
The first cabling head and the tail on second wiring layer are electrically connected；And
Protection ring, including two or more are printed on the 3rd pad on first wiring layer, each 3rd pad and institute
The first pad and the second pad electrical isolation are stated, and second pad is interspersed to form ring-type with the 3rd pad
Track；
Wherein, the edge of the metal dome is respectively with each second pad solder, and the metal dome is in the circuit
In first pad is covered in by projection on plate, the 3rd pad is outside the projection.
Further, the protection ring also includes the annular pad being printed on first wiring layer, the annular pad
Enclose outside the annular locus, the annular pad and first pad and the second pad electrical isolation.
Further, each 3rd pad is electrically connected with the annular pad.
Further, each 3rd pad passes through second on second wiring layer with the annular pad
Cabling is electrically connected.
Further, the 3rd pad is electric by opening up the first via on the substrate and second cabling
Connection, the annular pad are electrically connected by the second via opened up on the substrate with second cabling.
Further, second pad is electric by opening up the 3rd via on the substrate and first cabling
Connection.
Further, the edge of the metal dome has a two or more salient angle, and each salient angle is respectively with each described second
Pad solder.
Further, the metal dome is butterfly or square.
Second aspect of the present invention provides a kind of electronic equipment, and the electronic equipment includes electric switch, the electric switch
Including foregoing construction of switch.
Further, the electronic equipment also includes alarm and protection circuit, and the alarm and protection circuit is opened with described respectively
Close the hoop connection of structure.
Having the technical effect that relative to prior art of the invention：In above-mentioned construction of switch, the multiple of signal outer shroud are formed
Multiple 3rd pads of second pad and protection ring are interspersed to form annular locus on circuit boards, on the one hand, when the switch
When structure is destroyed by slight external force, the first weldering of the second pad and the 3rd pad or the 3rd pad with forming signal inner ring
Disk short circuit, alarm and protection circuit is triggered, other force devices in circuit board are prevented by even more serious damage, so as to which this is opened
Closing structure has higher sensitivity, and the protection level destroyed to external force is higher；On the other hand, each 3rd in the construction of switch
Pad and the first pad and the second pad electrical isolation, so as to also be avoided that external environment disturbance causes the 3rd pad and metal dome
Produce false triggering operation；It is low and easy produce false triggering and ask so as to efficiently solve existing construction of switch protection level
Topic.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those skilled in the art, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other attached
Figure.
Fig. 1 is the composition structure chart for the hoop that first embodiment of the invention provides；
Fig. 2 is electrical connection diagram of the second pad of first embodiment of the invention offer on the second wiring layer；
Fig. 3 is the metal dome structure chart that first embodiment of the invention provides；
Fig. 4 is the composition structure chart for the hoop that second embodiment of the invention provides；
Fig. 5 is electrical connection diagram of the second pad of second embodiment of the invention offer on the second wiring layer；
Fig. 6 is the kind metal dome structure chart that second embodiment of the invention provides；
Fig. 7 is the composition structure chart for the kind hoop that third embodiment of the invention provides；
Fig. 8 is the 3rd pad and electrical connection of the annular pad on the second wiring layer that third embodiment of the invention provides
Schematic diagram；
Fig. 9 is that the embodiment of the present invention provides circuit board cross section structure schematic diagram；
Figure 10 is view of the construction of switch provided in an embodiment of the present invention when disconnecting；
Figure 11 is view of the construction of switch provided in an embodiment of the present invention in conducting；
Figure 12 is a kind of electronic equipment structural representation provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
With reference to Fig. 1-9, the composition structure chart of construction of switch provided in an embodiment of the present invention, for convenience of description, only show
The part related to the embodiment of the present invention, details are as follows：
Construction of switch includes metal dome 30 and multiple setting hoops on circuit boards, and circuit board has substrate 901, the
One wiring layer 101 and the second wiring layer 201 being separated by with substrate 901.
Wherein, Fig. 1 shows the composition structure chart of hoop, and hoop includes signal inner ring, signal outer shroud and protection ring.
Signal inner ring includes the first pad 102 being printed on the first wiring layer 101；Signal outer shroud, including four be printed on the first cloth
The second pad 103 on line layer 101, four the second pads 103 enclose it is outer located at the first pad 102 and with signal inner ring electrically every
From wherein electrical isolation refers between different force devices in isolation electrically.Protection ring is printed on the first cloth including four
The 3rd pad 104 on line layer 101, each 3rd pad 104 and the first pad 102 and the electrical isolation of the second pad 103, and the
Two pads 103 and the 3rd pad 104 are interspersed to form annular locus 105；In general, being interspersed to form annular locus and refers to
Two different types of elements are arranged along an end to end annular locus, and any two adjacent elements it
Between be belonging respectively to different types.
Preferably, the second pad 103 and the 3rd pad 104 equidistantly are interspersed to form annular locus 105, wherein being equidistantly
It is identical to refer to the spacing being between any two neighboring element in annular locus 105.
Wherein figure 2 show electrical connection diagram of second pad 103 on the second wiring layer 201 in Fig. 1, such as Fig. 2 institutes
Show, each second pad 103 is electrically connected from beginning to end by the first cabling 202 on the second wiring layer 201；Due to each electricity
The electrical connection of power element needs to occupy larger space, therefore by being electrically connected in the second wiring layer 201, saves
The arrangement space of first wiring layer 101, circuit board can accommodate more force devices, realize increasingly complex circuit function.
Wherein Fig. 3 shows the structure chart of the metal dome 30 to match with hoop in Fig. 1, the edge difference of metal dome 30
Welded with each second pad 103, metal dome 30 is in the first pad 102 is covered in by the projection on circuit board, the 3rd pad
104 outside projection.
Optionally, metal dome can be made of ultra-thin and superhard stainless steel material, wherein the ultra-thin thickness for referring to material
Degree is between 0.05mm-0.1mm, and for the superhard hardness for referring to material between HV480-550, wherein HV refers to that Vickers is hard
Degree.
It should be noted that in the present embodiment, the quantity of the second pad 103 and the 3rd pad 104 can be it is N number of, its
Middle N is the positive integer more than or equal to 2.
Optionally, the quantity of the second pad 103 and the 3rd pad 104 can be 1.
Optionally, the quantity of the second pad 103 and the quantity of the 3rd pad 104 are equal.
Optionally, as shown in figure 3, metal dome 30 is butterfly, the edge of metal dome 30 has 4 salient angles 301, each salient angle
301 weld with each second pad 103 respectively.
Optionally, metal dome 30 can be the other shapes such as square or oval.
Optionally, the edge of metal dome 30 can have N number of salient angle 301, and wherein N is the positive integer more than or equal to 2.
Fig. 4 shows another composition structure chart of hoop, each number of pads in the hoop shown in Fig. 4
Compared to Figure 1 there is difference.As shown in figure 4, signal inner ring includes two the first pads being printed on the first wiring layer 101
102；Signal outer shroud includes two the second pads 103 being printed on the first wiring layer 101, and two the second pads 103 enclose and are located at
First pad 102 it is outer and with signal inner ring electrical isolation.
Wherein figure 5 show electrical connection diagram of second pad 102 on the second wiring layer 201 in Fig. 4；Show in Fig. 5
The second quantity compared with Fig. 2 of pad 103 has difference in the electrical connection diagram gone out；As shown in figure 5, each second pad 103 is logical
The first cabling 202 crossed on the second wiring layer 201 is electrically connected from beginning to end.
Fig. 6 shows the structure chart of the metal dome 30 to match with hoop in Fig. 4, the shape of the metal dome 30 shown in Fig. 6
Shape has difference compared with Fig. 3, as shown in fig. 6, metal dome 30 is square, the edge of metal dome has 2 salient angles 301, each
Salient angle 301 is welded with each second pad 103 respectively.
Fig. 7 shows another hoop composition structure chart provided in an embodiment of the present invention, with Fig. 1 the present embodiment phases
Than the hoop in the present embodiment also includes the annular pad 701 being printed on the first wiring layer 101, and the annular pad 701 is enclosed
Outside annular locus 105, the pad 102 of annular pad 701 and first and the electrical isolation of the second pad 103.
Optionally, the 3rd pad 104 is electrically connected with annular pad 701,
Preferably, Fig. 8 is shown, each 3rd pad 104 in Fig. 7 is with annular pad 701 on the second wiring layer 201
Electrical connection schematic diagram, as shown in figure 8, each 3rd pad 104 and annular pad 701 pass through located at the second wiring layer 201
On the second cabling 801 be electrically connected.
Optionally, each 3rd pad 104 can pass through the 3rd on the first wiring layer 101 with annular pad 701
Cabling is electrically connected, or the 3rd pad 104 is extended inwardly to form by the inwall of annular pad 701.
Optionally, Fig. 9 shows circuit board cross section structure schematic diagram provided by the invention, with reference to Fig. 1 to 9, wherein pad
903 can be specially：3rd pad 104, annular pad 701, the second pad 103；Cabling 904 can be：First cabling 202,
Second cabling 801, as shown in figure 9, pad 903 is electrically connected by the via 902 being opened on substrate 901 with cabling 904；
It should be noted that via refers in order to the force device between connection circuit plate various wirings layer, each
Wiring layer needs the intersection of the force device connected to bore a upper common aperture, and the common aperture is via.
Specifically, with reference to Fig. 9, the 3rd pad 104 passes through the first via and the second cabling 801 that are opened on substrate 901
Electrical connection；Annular pad 701 is electrically connected by the second via being opened on substrate 901 with the second cabling 801；Second weldering
Disk 103 is electrically connected by the 3rd via being opened on substrate 901 with the first cabling 202.
In order to be better understood from the present embodiment, Figure 10 shows state signal of the construction of switch when disconnecting in the present embodiment
Figure, details are as follows：
When construction of switch disconnects, as shown in Figure 10, the second pad 103 on the first wiring layer 101 is printed on by opening
The via 902 being located on substrate 901 is electrically connected with the first cabling 202 being printed on the second wiring layer 201；Due to metal dome
30 edge is welded with each second pad 103 respectively, and the first pad 102 is covered in by metal dome 30 in the projection on circuit board
It is interior, the now electrical isolation of 30 and first pad of metal dome 102, therefore, the first pad 102 and printing on the first wiring layer 101
The second pad 103 on the first wiring layer 101 is not electrically connected, and the operating circuit in circuit board does not turn on simultaneously.
Figure 11 shows view of the construction of switch in conducting in the present embodiment, and with reference to Figure 10, details are as follows：
When the center shrapnel region of metal dome 30 is by pressed by external force, the shell fragment of metal dome 30 is to recessed to the first pad
102, now, the first pad 102 is electrically connected with the second pad 103 by metal dome 30, and the operating circuit in circuit board is in
Normally state, so as to which the operating circuit in circuit board realizes corresponding circuit function.
Figure 12 shows the electronic devices structure schematic diagram that the present embodiment provides, and electronic equipment 1201 includes electric switch
1202, wherein, electric switch 1202 includes such as preceding construction of switch.
Optionally, electronic equipment 1202 also includes alarm and protection circuit 1203, alarm and protection circuit 1203 respectively with switch
The hoop connection of structure；Wherein alarm and protection circuit is used to send alarm signal, remind user now construction of switch by
Independent insulation blocking is carried out to external force violence damage, and by other force devices in circuit board, prevents bigger circuit
Failure；For example, when by force destruction of the construction of switch by external force, cause metal dome 30 to touch and be printed on the first wiring layer
The 3rd pad 104 on 101, the 3rd pad 104 are electrically connected with the second pad 103 by metal dome 30, now trigger electricity
Alarm and protection circuit 1203 on the plate of road, so as to send alarm signal, the safety of force device in protection circuit plate；Therefore this reality
Apply in example and the safe for operation of operating circuit in circuit board is greatly provided by external alarm and protection circuit.
By the embodiment of the present invention, signal outer shroud includes the second pad that two or more is printed on the first wiring layer, protects
Retaining ring includes the 3rd pad that two or more is printed on the first wiring layer, and signal outer shroud employs the structure design side of non-closed loop
Formula, and the second pad and the 3rd pad are interspersed to form annular locus, it ensure that construction of switch can be to extraneous small sudden and violent
Power destroys triggering alarm and protection circuit, realizes the protection for each force device of circuit board, protection level is high, while and can
Prevent that false triggering operates caused by external disturbance, increases the antijamming capability of construction of switch, so as to efficiently solve
In the prior art, construction of switch destroys that safety precaution rank is low, easily causes the problem of false triggering for external force.
It should be noted that herein, such as first and second etc relational terms are used merely to an entity
Made a distinction with another entity, and exist between not necessarily requiring or implying these entities any this actual relation or
Person's order.And term " comprising ", "comprising" or any other variant are intended to including for nonexcludability, so that bag
Include the product of a series of elements or the key element that structure is intrinsic.In the absence of more restrictions, by sentence " bag
Include ... " or " including ... " limit key element, it is not excluded that at the process including the key element, method, article or end
Other key element in end equipment also be present.In addition, herein, " being more than ", " being less than ", " exceeding " etc. are interpreted as not including this
Number；" more than ", " following ", " within " etc. be interpreted as including this number.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (10)
1. a kind of construction of switch, it is characterised in that including hoop metal dome and multiple settings on circuit boards, the circuit
There is plate substrate, the first wiring layer and the second wiring layer being separated by with the substrate, the hoop to include：
Signal inner ring, including the first pad being printed on first wiring layer；
Signal outer shroud, including two or more are printed on the second pad on first wiring layer, and more than two described second
Pad encloses outside first pad and passed through with the signal inner ring electrical isolation, each second pad located at described
The first cabling head and the tail on second wiring layer are electrically connected；And
Protection ring, including two or more are printed on the 3rd pad on first wiring layer, each 3rd pad and described the
One pad and the second pad electrical isolation, and second pad is interspersed to form ring-type rail with the 3rd pad
Mark；
Wherein, the edge of the metal dome is respectively with each second pad solder, and the metal dome is on the circuit board
Projection first pad is covered in, the 3rd pad is outside the projection.
2. structure according to claim 1, it is characterised in that the protection ring also includes being printed on first wiring layer
On annular pad, the annular welds armor is outside the annular locus, the annular pad and first pad and described
Second pad electrical isolation.
3. structure according to claim 2, it is characterised in that each 3rd pad electrically connects with the annular pad
Connect.
4. structure according to claim 3, it is characterised in that each 3rd pad is with the annular pad by setting
In the second cabling electrical connection on second wiring layer.
5. structure according to claim 4, it is characterised in that the 3rd pad is by opening up on the substrate
One via and second cabling are electrically connected, the annular pad by open up the second via on the substrate with it is described
Second cabling is electrically connected.
6. structure according to claim 1, it is characterised in that second pad is by opening up on the substrate
Three vias are electrically connected with first cabling.
7. structure according to claim 1, it is characterised in that the edge of the metal dome has two or more salient angle, respectively
Individual salient angle respectively with each second pad solder.
8. structure according to claim 1, it is characterised in that the metal dome is butterfly or square.
9. a kind of electronic equipment, the electronic equipment includes electric switch, it is characterised in that the electric switch includes such as right
It is required that the construction of switch described in any one of 1 to 8 claim.
10. electronic equipment according to claim 9, it is characterised in that the electronic equipment also includes alarm and protection circuit,
Hoop of the alarm and protection circuit respectively with the construction of switch is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710947489.7A CN107633972B (en) | 2017-10-12 | 2017-10-12 | Switch structure and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710947489.7A CN107633972B (en) | 2017-10-12 | 2017-10-12 | Switch structure and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107633972A true CN107633972A (en) | 2018-01-26 |
| CN107633972B CN107633972B (en) | 2020-04-03 |
Family
ID=61104769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710947489.7A Active CN107633972B (en) | 2017-10-12 | 2017-10-12 | Switch structure and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107633972B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108521711A (en) * | 2018-05-29 | 2018-09-11 | 福建升腾资讯有限公司 | A kind of through-hole pcb board secure line via protection structure and method |
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| CN204707346U (en) * | 2015-05-29 | 2015-10-14 | 杭州华三通信技术有限公司 | The pad structure of PCB |
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| CN207517597U (en) * | 2017-10-12 | 2018-06-19 | 百富计算机技术（深圳）有限公司 | A kind of construction of switch and electronic equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11144548A (en) * | 1997-11-11 | 1999-05-28 | Porimatec Kk | Key pad with hard resin key top |
| CN202930277U (en) * | 2012-10-31 | 2013-05-08 | 福建新大陆支付技术有限公司 | Safety switch |
| CN103607840A (en) * | 2013-11-26 | 2014-02-26 | 福建联迪商用设备有限公司 | Metal dome golden finger, key structure and metal dome assembling technology |
| CN104538225A (en) * | 2014-12-31 | 2015-04-22 | 福建联迪商用设备有限公司 | Electrical switch structure and electronic equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108521711A (en) * | 2018-05-29 | 2018-09-11 | 福建升腾资讯有限公司 | A kind of through-hole pcb board secure line via protection structure and method |
| CN108521711B (en) * | 2018-05-29 | 2023-07-25 | 福建升腾资讯有限公司 | Through hole protection structure and method for safety circuit of through hole PCB |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107633972B (en) | 2020-04-03 |
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