CN103152975A - Printed circuit board of wall switch - Google Patents
Printed circuit board of wall switch Download PDFInfo
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- CN103152975A CN103152975A CN2013100649224A CN201310064922A CN103152975A CN 103152975 A CN103152975 A CN 103152975A CN 2013100649224 A CN2013100649224 A CN 2013100649224A CN 201310064922 A CN201310064922 A CN 201310064922A CN 103152975 A CN103152975 A CN 103152975A
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- printed circuit
- circuit board
- pcb
- wall surface
- copper foil
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Abstract
The invention discloses a printed circuit board of a wall switch. The printed circuit board is provided with locating holes, and is characterized in that first copper foil rings and a first lead are arranged on the surface of the printed circuit board; one locating hole is encircled by each first copper foil ring; the first copper foil rings are connected through the first lead so as to form a grounding loop, and the grounding loop is connected with the ground. The technical scheme of the invention provides the printed circuit board of the wall switch, so that static electricity in the wall switch is effectively quickly released to the ground through the grounding loop, and damage of the static discharge of the wall switch to components in the wall switch can be avoided.
Description
Technical field
The present invention relates to the printed-board technology field, particularly a kind of printed circuit board (PCB) of wall surface switch.
Background technology
Wall surface switch is widely used in family, commercial unit and various public place as a kind of illumination control apparatus.Because frequency of utilization is high, therefore the static damage that produces when the internal components of wall surface switch is easily contacted with human body, need to prevent wall surface switch static discharge (ESD, Electro-Static discharge).
Static discharge refers to that the electric charge that object is adjacent to each other or direct contact causes with different electrostatic potentials shifts.Static is produced by contact, separation or the phase mutual friction of different material, electronic product make, transport, in the process such as use, the chance that is subject to the static discharge injury is very high, and the ic component of especially commonly using on printed circuit board (PCB) in electronic installation is very responsive to static.Along with circuit develops to trend toward miniaturization, ic component is tending towards microminiaturization, its withstand voltage reduces, antistatic impact capacity weakens, therefore, the static electric field and the electrostatic induced current that are produced by static discharge easily cause damage to these type of high density components and parts on printed circuit board (PCB), may affect the operation of whole electronic installation when serious.
The conventional means that prevents the wall surface switch static discharge is that the housing design with wall surface switch becomes closed structure, avoids forming path the circuit of wall surface switch inside directly being discharged because air is ionized.Yet, needing owing to installing, the housing of wall surface switch can not be designed to totally enclosed structure.Therefore, existingly prevent that the protection effect of wall surface switch static discharge is poor, can not effectively protect the components and parts of wall surface switch inside.
More technical schemes about the printed circuit board (PCB) electrostatic defending can be that US2013001596A1, denomination of invention are the electrostatic charge protection method of a Deposition of ESD Protection on Printed Circuit Boards(printed circuit board (PCB) with reference to publication number) the U.S. Patent application file.
Summary of the invention
What the present invention solved is that the wall surface switch static discharge causes the problem of damage to the wall surface switch internal component.
For addressing the above problem, the invention provides a kind of printed circuit board (PCB) of wall surface switch, described printed circuit board (PCB) is provided with location hole, and the surface also is provided with: the first Copper Foil ring and the first wire; Each first Copper Foil ring surrounds a location hole; Described the first Copper Foil ring is connected by described the first wire, forms ground loop, and described ground loop is suitable for ground connection.
Optionally, described printed circuit board (PCB) is single sided board, and described the first Copper Foil ring and the first wire are positioned at the surface of described printed circuit board wiring.
Optionally, described printed circuit board (PCB) is double sided board, and described the first Copper Foil ring and the first wire are positioned at the same surface of described printed circuit board (PCB), and perhaps described the first Copper Foil ring and the first wire are positioned at the different surfaces of described printed circuit board (PCB).
Optionally, described printed circuit board (PCB) also is provided with the socket link, and described socket link comprises earth terminal, and described ground loop is connected with described earth terminal.
Optionally, have on described ground loop and first tie point of described earth terminal apart from minimum, described the first tie point is connected with described earth terminal.
Optionally, the surface of described printed circuit board (PCB) also is provided with key contacts, the second Copper Foil ring and the second wire; Each second Copper Foil ring surrounds a key contacts; Described the second Copper Foil ring is connected by described the second wire, forms the contact loop, and described contact loop is connected with described ground loop.
Optionally, have on the loop of described contact and second tie point of described ground loop apart from minimum, described the second tie point is connected with described ground loop.
Optionally, also be provided with antenna, privates and via hole on described printed circuit board (PCB), described antenna is positioned at the fringe region of described printed circuit board (PCB), and described antenna is connected with described ground loop by described privates, and described via hole is positioned on described privates.
Optionally, described antenna is electric capacity proximity antenna.
Optionally, described antenna is non-enclosed antenna, and the top of described antenna all is connected with described ground loop with end.
Optionally, described antenna is closed antenna, and described antenna has and three tie point of described ground loop apart from minimum, and described the 3rd tie point is connected with described ground loop.
Optionally, described via hole is circular, rectangle or ellipse.
Compared with prior art, the printed circuit board (PCB) of the wall surface switch that provides of technical solution of the present invention has following beneficial effect:
Be equipped with the first Copper Foil ring around location hole on printed circuit board (PCB), jointly formed ground loop by the first Copper Foil ring with the first wire that is connected each the first Copper Foil ring.Because each location hole is all surrounded by first a Copper Foil ring, and solder mask is not laid on the surface of the first Copper Foil ring, therefore, the first Copper Foil ring can absorb well by location hole and be transferred to static in wall surface switch, and by described ground loop, the static that absorbs is released into the earth fast, prevent from because of static discharge, the components and parts on printed circuit board (PCB) being caused damage.
In addition, in a possibility of the present invention, the surface of printed circuit board (PCB) also is provided with key contacts, be equipped with the second Copper Foil ring around key contacts, jointly formed the contact loop by the second Copper Foil ring with the second wire that is connected each the second Copper Foil ring, and described contact loop is connected with described ground loop.Identical with the effect of ground loop, the key contacts loop can with owing to touching the static guiding that produces at the button place of wall surface switch to ground loop, be released into the earth by ground loop with static, thereby prevent better static discharge rapidly.
In another possibility of the present invention, the surface of printed circuit board (PCB) also is provided with antenna, and antenna is connected with described ground loop by privates, and privates is provided with via hole.Due to the existence of via hole, antenna and ground loop electric insulation guarantee the normal operation of wall surface switch, and when having static to enter by the wall surface switch edge, can carry out atmospherical discharges by via hole, static guiding to ground loop, is released into the earth by ground loop with static rapidly.
Description of drawings
Fig. 1 is the sectional view of existing single sided board or double sided board;
Fig. 2 is the surface texture schematic diagram of the printed circuit board wiring of existing a kind of wall surface switch;
Fig. 3 is the surface texture schematic diagram of printed circuit board embodiment 1 wiring of wall surface switch of the present invention;
Fig. 4 is the surface texture schematic diagram of printed circuit board embodiment 2 wirings of wall surface switch of the present invention;
Fig. 5 is the surface texture schematic diagram of printed circuit board embodiment 3 wirings of wall surface switch of the present invention.
Embodiment
Just as described in the background art, because the wall surface switch frequency of utilization is high, therefore the static damage that produces when its internal components is easily contacted with human body, is necessary to adopt corresponding measure to prevent the wall surface switch static discharge.In prior art, the conventional means that prevents the wall surface switch static discharge is that the housing design with wall surface switch becomes closed structure, still, needs owing to installing, and the housing of wall surface switch can not be designed to totally enclosed structure.Therefore, existingly prevent that the protection effect of wall surface switch static discharge is poor, can not effectively protect the components and parts of wall surface switch inside.The inventor of the technical program provides a kind of printed circuit board (PCB) of wall surface switch through research, and the structure by printed circuit board (PCB) is released into the earth rapidly with static, effectively protects the components and parts of wall surface switch inside.
For above-mentioned purpose of the present invention, feature and advantage can more be become apparent, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in detail.
Set forth in the following description a lot of details so that fully understand the present invention, implement but the present invention can also adopt other to be different from alternate manner described here, so the present invention has not been subjected to the restriction of following public specific embodiment.
Need to prove, the printed circuit board (PCB) in technical solution of the present invention embodiment (PCB, Printed Circuit Board) is single sided board (Single-Sided Boards) or double sided board (Double-Sided Boards).With reference to figure 1, single sided board refers to be chosen in the printed circuit board (PCB) 1 of wiring on first surface 11 or second surface 12; Double sided board refers to the printed circuit board (PCB) 1 that all can connect up on first surface 11 and second surface 12.In following embodiment, be all that the embodiment to technical solution of the present invention describes as an example of single sided board example, but the printed circuit board (PCB) of the wall surface switch that the technical program provides can be also double sided board.
Fig. 2 is a kind of surface texture schematic diagram of printed circuit board wiring of wall surface switch.With reference to figure 2, the printed circuit board (PCB) 1 of described wall surface switch is provided with location hole 21, and described location hole 21 is arranged at the edge of described printed circuit board (PCB) 1 usually, is used for after locking screw, described printed circuit board (PCB) 1 being fixed in wall surface switch.Also be provided with on the surface of described printed circuit board (PCB) 1 wiring Copper Foil (not shown) and the socket link 23 that some components and parts 22, holding wire and surface have solder mask, described socket link 23 is connected with socket in wall surface switch, exports the signal of telecommunication and input control signal on described printed circuit board (PCB) 1.Described socket link 23 comprises earth terminal 231, and described earth terminal 231 is suitable for being connected with the earth by wall surface switch, realizes the ground connection of described printed circuit board (PCB) 1.
In the technical program, described printed circuit board (PCB) 1 is the printed circuit board (PCB) of wall surface switch, and the surface of described printed circuit board (PCB) 1 wiring also is provided with key contacts 24 and antenna 25.Described key contacts 24 is the circular Copper Foil of conduction, be usually located at the fringe region near described printed circuit board (PCB) 1, quantity equates with number of keys on wall surface switch, after the button of pressing on wall surface switch, conductor contact on described key contacts 24 and button, the conductor on button contact with ground wire on described printed circuit board (PCB) 1, realize described key contacts 24 ground connection, thereby produce the control signal of wall surface switch.The generation principle of the conductor on described button and described control signal is same as the prior art, does not repeat them here.Described antenna 25 is electric capacity proximity antenna, is layed in the peripheral region of described printed circuit board (PCB) 1, can effectively respond to approaching of human body.
Need to prove, the type of antenna described in present embodiment 25 can be different and change to some extent with the type of wall surface switch, thus described antenna 25 be electric capacity proximity antenna should be as limitation of the invention.Be described in detail below in conjunction with the printed circuit board (PCB) of drawings and the specific embodiments to wall surface switch of the present invention.
Fig. 3 is the surface texture schematic diagram of printed circuit board embodiment 1 wiring of wall surface switch of the present invention.With reference to figure 3, described printed circuit board (PCB) 1 comprises structure shown in Figure 2, and its surface also is provided with: the first Copper Foil ring 31 and the first wire 32; Each first Copper Foil ring 31 surrounds a location hole 21, and for satisfying the processing technology requirement of printed circuit board (PCB), the distance between the width of described the first Copper Foil ring 31 and described the first Copper Foil ring 31 and described location hole 21 is all greater than 0.2mm; Described the first Copper Foil ring 31 is connected by described the first wire 32, and connected mode can form ground loop for connecting successively, and described ground loop is suitable for ground connection.Have on described ground loop and the earth terminal of described socket link 23 the first tie point A apart from minimum, described the first tie point A is connected with described earth terminal, is about to described ground loop ground connection.
In the present embodiment, described printed circuit board (PCB) 1 is single sided board, and described the first Copper Foil ring 31 and the first wire 32 all are positioned at the surface of described printed circuit board (PCB) 1 wiring.In other embodiments, described printed circuit board (PCB) 1 also can be double sided board, described the first Copper Foil ring 31 and the first wire 32 are positioned at the same surface of described printed circuit board (PCB) 1, need to prove, described the first Copper Foil ring 31 and the first wire 32 can be arranged in any one surface on two surfaces of described printed circuit board (PCB) 1, also can be positioned at two surfaces of described printed circuit board (PCB) 1; Perhaps described the first Copper Foil ring 31 and the first wire 32 are positioned at the different surfaces of described printed circuit board (PCB) 1, be described the first Copper Foil ring 31 surface being positioned at described printed circuit board (PCB) 1, another surface that described the first wire 32 is positioned at described printed circuit board (PCB) 1, can be also another surface that surface, an another part that the part of described the first Copper Foil ring 31 and the first wire 32 is positioned at described printed circuit board (PCB) 1 are positioned at described printed circuit board (PCB) 1, described the first Copper Foil ring 31 be connected wire 32 and connect by guide hole.
Because static normally is transferred to the internal damage electronic device of electronic equipment by the hole in structure or gap, therefore, in the present embodiment, the the first Copper Foil ring 31 that is enclosed in described location hole 21 surroundings can absorb the static that enters wall surface switch inside by described location hole 21 transmission effectively, and by the ground loop that described the first Copper Foil ring 31 and the first wire 32 form, the static that absorbs is released into the earth fast.Particularly, solder mask is not laid on the surface of described the first Copper Foil ring 31, is namely exposed Copper Foil, can absorb well static; Between the earth terminal of described ground loop and described socket link 23, distance is minimum, has reduced the circuit inductance area, and static can discharge fast.
Embodiment 2
With reference to figure 4, to compare with embodiment 1, the surface of the printed circuit board (PCB) 1 of the embodiment 2 of technical solution of the present invention also is provided with the second Copper Foil ring 41 and the second wire 42.Each described second Copper Foil ring 41 surrounds a key contacts 24, and for satisfying the processing technology requirement of printed circuit board (PCB), the distance between the width of described the second Copper Foil ring 41 and described the second Copper Foil ring 41 and described key contacts 24 is all greater than 0.2mm; Described the second Copper Foil ring 41 is connected by described the second wire 42, and connected mode can form the contact loop for connecting successively, and described contact loop is connected with described ground loop.Have on the loop of described contact and the second tie point B of described ground loop apart from minimum, described the second tie point B is connected with described ground loop, and namely described contact loop is connected to ground by described ground loop.
In the present embodiment, the static guiding that the contact loop that is comprised of described the second Copper Foil ring 41 and the second wire 42 can produce the button due to the human body touch wall surface switch is to described ground loop, by described ground loop, static is released into the earth rapidly, thereby has prevented better static discharge.Particularly, when the button of human body touch wall surface switch, described key contacts 24 can with button on conductor contact, the conductor on button contact with described the second Copper Foil ring 41, realize described key contacts 24 ground connection, thus the control signal of generation wall surface switch.When the button of human body contact wall surface switch, the static that produces due to human body touch also therefore transmission enter wall surface switch inside.Different from way of the prior art, in the present embodiment will with button on the Copper Foil of conductor contact be designed to ring-type, it is described the second Copper Foil ring 41, similar with embodiment 1, described the second Copper Foil ring 41 can absorb static well, and by described contact loop with static guiding to described ground loop.
Embodiment 3
With reference to figure 5, compare with embodiment 1, also be provided with privates 51 and via hole 52 on the printed circuit board (PCB) 1 of the embodiment 3 of technical solution of the present invention.Described via hole 52 is positioned on described privates 51, and described privates 51 is used for connecting described antenna 25 and described ground loop.
In the present embodiment, described antenna 25 is for having the non-enclosed antenna of top P and end Q, and described top P all is connected with described ground loop by described privates 51 with end Q.In other embodiments, described antenna 25 also can be closed antenna, and described closed antenna has and three tie point of described ground loop apart from minimum, and described the 3rd tie point is connected with described ground loop.
As shown in Figure 5, the shape of described via hole 52 can be circle, also can be rectangle, ellipse or other geometry, is used for the described antenna 25 of electrical isolation and described ground loop, avoid described antenna 25 and be connected the ground loop connection, causing wall surface switch to work.
Because described antenna 25 is suitable for responding to approaching of human body, therefore usually be arranged on the peripheral region of described printed circuit board (PCB) 1, when the gap, edge that has static by wall surface switch enters wall surface switch inside, at first enter described antenna 25.In the present embodiment; existence due to described via hole 52; described antenna 25 and described ground loop electric insulation; guarantee the normal operation of wall surface switch; and when having static to enter described antenna 25 by gap, wall surface switch edge, can carry out atmospherical discharges by described via hole 52, with static guiding to described ground loop; by described ground loop, static is released into the earth rapidly, thereby protects better the internal components of wall surface switch.
In sum, the printed circuit board (PCB) of the wall surface switch that technical solution of the present invention provides, can be effectively the static that enters wall surface switch inside be released into the earth rapidly by ground loop, avoids the wall surface switch static discharge to cause damage to the wall surface switch internal component.
Although the present invention with preferred embodiment openly as above; but it is not to limit the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible change and modification to technical solution of the present invention; therefore; every content that does not break away from technical solution of the present invention; to any simple modification, equivalent variations and modification that above embodiment does, all belong to the protection range of technical solution of the present invention according to technical spirit of the present invention.
Claims (12)
1. the printed circuit board (PCB) of a wall surface switch, described printed circuit board (PCB) is provided with location hole, it is characterized in that, and the surface of described printed circuit board (PCB) also is provided with: the first Copper Foil ring and the first wire; Each first Copper Foil ring surrounds a location hole; Described the first Copper Foil ring is connected by described the first wire, forms ground loop, and described ground loop is suitable for ground connection.
2. the printed circuit board (PCB) of wall surface switch according to claim 1, is characterized in that, described printed circuit board (PCB) is single sided board, and described the first Copper Foil ring and the first wire are positioned at the surface of described printed circuit board wiring.
3. the printed circuit board (PCB) of wall surface switch according to claim 1, it is characterized in that, described printed circuit board (PCB) is double sided board, described the first Copper Foil ring and the first wire are positioned at the same surface of described printed circuit board (PCB), and perhaps described the first Copper Foil ring and the first wire are positioned at the different surfaces of described printed circuit board (PCB).
4. the printed circuit board (PCB) of wall surface switch according to claim 1, is characterized in that, described printed circuit board (PCB) also is provided with the socket link, and described socket link comprises earth terminal, and described ground loop is connected with described earth terminal.
5. the printed circuit board (PCB) of wall surface switch according to claim 4, is characterized in that having on described ground loop and first tie point of described earth terminal apart from minimum, and described the first tie point is connected with described earth terminal.
6. the printed circuit board (PCB) of wall surface switch according to claim 1, is characterized in that, the surface of described printed circuit board (PCB) also is provided with key contacts, the second Copper Foil ring and the second wire; Each second Copper Foil ring surrounds a key contacts; Described the second Copper Foil ring is connected by described the second wire, forms the contact loop, and described contact loop is connected with described ground loop.
7. the printed circuit board (PCB) of wall surface switch according to claim 6, is characterized in that having on the loop of described contact and second tie point of described ground loop apart from minimum, and described the second tie point is connected with described ground loop.
8. the printed circuit board (PCB) of wall surface switch according to claim 1, it is characterized in that, also be provided with antenna, privates and via hole on described printed circuit board (PCB), described antenna is positioned at the fringe region of described printed circuit board (PCB), described antenna is connected with described ground loop by described privates, and described via hole is positioned on described privates.
9. the printed circuit board (PCB) of wall surface switch according to claim 8, is characterized in that, described antenna is electric capacity proximity antenna.
10. the printed circuit board (PCB) of wall surface switch according to claim 8, is characterized in that, described antenna is non-enclosed antenna, and the top of described antenna all is connected with described ground loop with end.
11. the printed circuit board (PCB) of wall surface switch, is characterized in that according to claim 8, described antenna is closed antenna, and described antenna has and three tie point of described ground loop apart from minimum, and described the 3rd tie point is connected with described ground loop.
12. the printed circuit board (PCB) of wall surface switch, is characterized in that according to claim 8, described via hole is circle, rectangle or ellipse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310064922.4A CN103152975B (en) | 2013-02-28 | 2013-02-28 | The printed circuit board (PCB) of wall surface switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310064922.4A CN103152975B (en) | 2013-02-28 | 2013-02-28 | The printed circuit board (PCB) of wall surface switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103152975A true CN103152975A (en) | 2013-06-12 |
| CN103152975B CN103152975B (en) | 2016-02-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310064922.4A Active CN103152975B (en) | 2013-02-28 | 2013-02-28 | The printed circuit board (PCB) of wall surface switch |
Country Status (1)
| Country | Link |
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| CN (1) | CN103152975B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516976A (en) * | 2016-06-15 | 2017-12-26 | 建准电机工业股份有限公司 | Electric machine with electrostatic discharge protection |
| CN111315115A (en) * | 2020-02-16 | 2020-06-19 | 苏州浪潮智能科技有限公司 | Implementation method for preventing secondary electrostatic discharge, circuit board and equipment |
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| US6043989A (en) * | 1997-05-22 | 2000-03-28 | Matsushita Electric Industrial Co., Ltd. | Static electricity removing structure for portable electronic devices |
| US20040257727A1 (en) * | 2003-06-23 | 2004-12-23 | Benq Corporation | ESD protection device, and pushbutton module and electronic device utilizing the same |
| CN1787718A (en) * | 2004-12-09 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Printed circuit board capable of preventing electrostatic discharging |
| CN202713776U (en) * | 2012-07-16 | 2013-01-30 | 贵阳永青仪电科技有限公司 | Anti-static printed board |
| CN203181406U (en) * | 2013-02-28 | 2013-09-04 | 江苏惠通集团有限责任公司 | Printed circuit board of wall switch |
-
2013
- 2013-02-28 CN CN201310064922.4A patent/CN103152975B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6043989A (en) * | 1997-05-22 | 2000-03-28 | Matsushita Electric Industrial Co., Ltd. | Static electricity removing structure for portable electronic devices |
| US20040257727A1 (en) * | 2003-06-23 | 2004-12-23 | Benq Corporation | ESD protection device, and pushbutton module and electronic device utilizing the same |
| CN1787718A (en) * | 2004-12-09 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Printed circuit board capable of preventing electrostatic discharging |
| CN202713776U (en) * | 2012-07-16 | 2013-01-30 | 贵阳永青仪电科技有限公司 | Anti-static printed board |
| CN203181406U (en) * | 2013-02-28 | 2013-09-04 | 江苏惠通集团有限责任公司 | Printed circuit board of wall switch |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107516976A (en) * | 2016-06-15 | 2017-12-26 | 建准电机工业股份有限公司 | Electric machine with electrostatic discharge protection |
| CN111315115A (en) * | 2020-02-16 | 2020-06-19 | 苏州浪潮智能科技有限公司 | Implementation method for preventing secondary electrostatic discharge, circuit board and equipment |
| CN111315115B (en) * | 2020-02-16 | 2022-07-08 | 苏州浪潮智能科技有限公司 | Implementation method for preventing secondary electrostatic discharge, circuit board and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN103152975B (en) | 2016-02-03 |
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