CN203181406U - Printed circuit board of wall switch - Google Patents
Printed circuit board of wall switch Download PDFInfo
- Publication number
- CN203181406U CN203181406U CN 201320093472 CN201320093472U CN203181406U CN 203181406 U CN203181406 U CN 203181406U CN 201320093472 CN201320093472 CN 201320093472 CN 201320093472 U CN201320093472 U CN 201320093472U CN 203181406 U CN203181406 U CN 203181406U
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- printed circuit
- circuit board
- pcb
- copper foil
- antenna
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Abstract
The utility model provides a printed circuit board of a wall switch. The printed circuit board is provided with positioning holes. The printed circuit board of the wall switch is characterized in that: the surface of the printed circuit board is also provided with first copper foil rings and a first lead; each first copper foil ring surrounds a positioning hole; and the first copper foil rings are connected through the first lead for forming a grounding loop which is suitable for grounding. The printed circuit board of the wall switch provided by the technical solution of the utility model can effectively release the static which enters inner part of the wall switch to ground through the grounding loop quickly and prevents inner component damage of the wall switch caused by electrostatic discharging of the wall switch.
Description
Technical field
The utility model relates to the printed-board technology field, particularly a kind of printed circuit board (PCB) of metope switch.
Background technology
The metope switch is widely used in family, commercial unit and the 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 metope switch is contacted with human body easily, need prevent metope switch static discharge (ESD, Electro-Static discharge).
Static discharge refers to have the electric charge that the adjacent to each other or direct contact of object of different electrostatic potentials causes and 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 subjected to the static discharge injury is very high, and especially the ic component of using always on the printed circuit board (PCB) in the 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 cause damage to these type of high density components and parts on the printed circuit board (PCB) easily, may influence the operation of whole electronic installation when serious.
The conventional means that prevents metope switch static discharge is that the housing with the metope switch is designed to closed structure, avoids forming path the circuit of metope switch inside directly being discharged because air is ionized.Yet, needing owing to install, the housing of metope switch can not be designed to totally enclosed structure.Therefore, existingly prevent that the protection effect of metope switch static discharge is poor, can not protect the components and parts of metope switch inside effectively.
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.
The utility model content
What the utility model solved is metope switch static discharge causes damage to the inner components and parts of metope switch problem.
For addressing the above problem, the utility model provides a kind of printed circuit board (PCB) of metope switch, and described printed circuit board (PCB) is provided with location hole, and the surface also is provided with: the first Copper Foil ring and first lead; Each first Copper Foil ring surrounds a location hole; The described first Copper Foil ring is connected by described first lead, forms ground loop, and described ground loop is suitable for ground connection.
Optionally, described printed circuit board (PCB) is single sided board, and the described first Copper Foil ring and first lead are positioned at the surface of described printed circuit board wiring.
Optionally, described printed circuit board (PCB) is double sided board, and the described first Copper Foil ring and first lead are positioned at the same surface of described printed circuit board (PCB), and perhaps the described first Copper Foil ring and first lead 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 the described ground loop and first tie point of described earth terminal apart from minimum, described 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 second lead; Each second Copper Foil ring surrounds a key contacts; The described second Copper Foil ring is connected by described second lead, 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 second tie point is connected with described ground loop.
Optionally, also be provided with antenna, privates and via hole on the 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 the 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 terminal.
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 metope switch that provides of technical solutions of the utility model has following beneficial effect:
Be equipped with the first Copper Foil ring around the location hole on the printed circuit board (PCB), formed ground loop by the first Copper Foil ring jointly with first lead that is connected each 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 the metope 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 the printed circuit board (PCB) being caused damage.
In addition, in a possibility of the present utility model, the surface of printed circuit board (PCB) also is provided with key contacts, be equipped with the second Copper Foil ring around the key contacts, formed the contact loop by the second Copper Foil ring jointly with second lead that is connected each second Copper Foil ring, and described contact loop links to each other with described ground loop.Identical with the effect of ground loop, the key contacts loop can be released into the earth by ground loop with static, thereby prevent static discharge better rapidly with owing to touching the static guiding ground loop that produces at the button place of metope switch.
In another possibility of the present utility model, 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.Since the existence of via hole, antenna and ground loop electric insulation, the operate as normal of assurance metope switch, and when static enters by the metope switching edge, can carry out atmospherical discharges by via hole, with the static ground loop that leads, by ground loop static is released into the earth 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 metope switch;
Fig. 3 is the surface texture schematic diagram of printed circuit board embodiment 1 wiring of the utility model metope switch;
Fig. 4 is the surface texture schematic diagram of printed circuit board embodiment 2 wirings of the utility model metope switch;
Fig. 5 is the surface texture schematic diagram of printed circuit board embodiment 3 wirings of the utility model metope switch.
Embodiment
Just as described in the background art, because metope switch frequency of utilization is high, therefore the static damage that produces when its internal components is contacted with human body easily, is necessary to adopt corresponding measure to prevent metope switch static discharge.In the prior art, the conventional means that prevents metope switch static discharge is that the housing with the metope switch is designed to closed structure, still, needs owing to install, and the housing of metope switch can not be designed to totally enclosed structure.Therefore, existingly prevent that the protection effect of metope switch static discharge is poor, can not protect the components and parts of metope switch inside effectively.The inventor of the technical program provides a kind of printed circuit board (PCB) of metope switch through research, and the structure by printed circuit board (PCB) is released into the earth rapidly with static, protects the components and parts of metope switch inside effectively.
For above-mentioned purpose of the present utility model, feature and advantage can more be become apparent, below in conjunction with drawings and Examples embodiment of the present utility model is described in detail.
A lot of details have been set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from alternate manner described here and implement, so the utility model is not subjected to the restriction of following public specific embodiment.
Need to prove that the printed circuit board (PCB) among the technical solutions of the utility model 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 the second surface 12; Double sided board refers to the printed circuit board (PCB) 1 that all can connect up on first surface 11 and the second surface 12.In following embodiment, all be that to be example with the single sided board describe the embodiment of technical solutions of the utility model, but the printed circuit board (PCB) of the metope switch that the technical program provides also can be double sided board.
Fig. 2 is a kind of surface texture schematic diagram of printed circuit board wiring of metope switch.With reference to figure 2, the printed circuit board (PCB) 1 of described metope 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 the metope switch.Also be provided with Copper Foil (not shown) and the socket link 23 that some components and parts 22, holding wire and surface have solder mask on the surface of described printed circuit board (PCB) 1 wiring, described socket link 23 links to each other with socket in the metope switch, exports the signal of telecommunication and input control signal on the 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 the metope 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 metope 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 the metope switch, behind the button of pressing on the metope switch, described key contacts 24 contacts with conductor on the button, the conductor on the button contacts with ground wire on the described printed circuit board (PCB) 1, realize described key contacts 24 ground connection, thereby produce the control signal of metope switch.The generation principle of the conductor on the 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 respond to approaching of human body effectively.
Need to prove that the type of antenna described in the present embodiment 25 can be different and change to some extent with the type of metope switch, thus described antenna 25 be electric capacity proximity antenna should be as to restriction of the present utility model.Be described in detail below in conjunction with the printed circuit board (PCB) of drawings and the specific embodiments to the utility model metope switch.
Fig. 3 is the surface texture schematic diagram of printed circuit board embodiment 1 wiring of the utility model metope switch.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 first lead 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 the described first Copper Foil ring 31 and the described first Copper Foil ring 31 and the described location hole 21 is all greater than 0.2mm; The described first Copper Foil ring 31 is connected by described first lead 32, and connected mode can form ground loop for connecting successively, and described ground loop is suitable for ground connection.Have on the described ground loop and the earth terminal of the described socket link 23 first tie point A apart from minimum, the described 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 the described first Copper Foil ring 31 and first lead 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, the described first Copper Foil ring 31 and first lead 32 are positioned at the same surface of described printed circuit board (PCB) 1, need to prove, the described first Copper Foil ring 31 and first lead 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 the described first Copper Foil ring 31 and first lead 32 are positioned at the different surfaces of described printed circuit board (PCB) 1, be the described first Copper Foil ring 31 surface being positioned at described printed circuit board (PCB) 1, another surface that described first lead 32 is positioned at described printed circuit board (PCB) 1, also can be another surface that surface, an another part that the part of the described first Copper Foil ring 31 and first lead 32 is positioned at described printed circuit board (PCB) 1 are positioned at described printed circuit board (PCB) 1, the described first Copper Foil ring 31 be connected by guide hole with first lead 32.
Because static normally is transferred to the internal damage electronic device of electronic equipment by the hole in the structure or slit, therefore, in the present embodiment, be enclosed in the described location hole 21 first Copper Foil ring 31 all around and can absorb the static that enters metope switch inside by described location hole 21 transmission effectively, and by the ground loop that the described first Copper Foil ring 31 and first lead 32 are formed the static that absorbs is released into the earth fast.Particularly, solder mask is not laid on the surface of the described first Copper Foil ring 31, namely is the Copper Foil that exposes, and can absorb static well; Distance is minimum between the earth terminal of described ground loop and described socket link 23, 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 solutions of the utility model also is provided with the second Copper Foil ring 41 and second lead 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 the described second Copper Foil ring 41 and the described second Copper Foil ring 41 and the described key contacts 24 is all greater than 0.2mm; The described second Copper Foil ring 41 is connected by described second lead 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, the described 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 that the contact loop of being made up of the described second Copper Foil ring 41 and second lead 42 can produce the button owing to the human body touch metope switch described ground loop that leads, by described ground loop static is released into the earth rapidly, thereby has prevented static discharge better.Particularly, when the button of human body touch metope switch, described key contacts 24 can contact with the conductor on the button, the conductor on the button contacts with the described second Copper Foil ring 41, realizes described key contacts 24 ground connection, thus the control signal of generation metope switch.When the button of human body contact metope switch, because therefore the static that human body touch produces also can transmit metope switch inside.Different with way of the prior art, the Copper Foil that will contact with the conductor on the button in the present embodiment is designed to ring-type, it is the described second Copper Foil ring 41, similar with embodiment 1, the described second Copper Foil ring 41 can absorb static well, and by described contact loop with the static described ground loop that leads.
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 solutions of the utility model.Described via hole 52 is positioned on the 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 terminal Q, and described top P all is connected with described ground loop by described privates 51 with terminal 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 to be connected with described ground loop, cause the metope switch can't operate as normal.
Because described antenna 25 is suitable for responding to approaching of human body, therefore be arranged on the peripheral region of described printed circuit board (PCB) 1 usually, enter the metope switch when inner as the slit, edge of static by the metope switch, at first enter described antenna 25.In the present embodiment; because the existence of described via hole 52; described antenna 25 and described ground loop electric insulation; guarantee the operate as normal of metope switch; and when static enters described antenna 25 by metope switching edge slit, can carry out atmospherical discharges by described via hole 52, with the static described ground loop that leads; by described ground loop static is released into the earth rapidly, thereby protects the internal components of metope switch better.
In sum, the printed circuit board (PCB) of the metope switch that technical solutions of the utility model provide, can effectively the static that enters metope switch inside be released into the earth rapidly by ground loop, avoid metope switch static discharge that the inner components and parts of metope switch are caused damage.
Though the utility model with preferred embodiment openly as above; but it is not to limit the utility model; any those skilled in the art are not in breaking away from spirit and scope of the present utility model; can utilize method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made possible change and modification; therefore; every content that does not break away from technical solutions of the utility model; to any simple modification, equivalent variations and modification that above embodiment does, all belong to the protection range of technical solutions of the utility model according to technical spirit of the present utility model.
Claims (12)
1. the printed circuit board (PCB) of a metope 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 first lead; Each first Copper Foil ring surrounds a location hole; The described first Copper Foil ring is connected by described first lead, forms ground loop, and described ground loop is suitable for ground connection.
2. according to the printed circuit board (PCB) of the described metope switch of claim 1, it is characterized in that described printed circuit board (PCB) is single sided board, the described first Copper Foil ring and first lead are positioned at the surface of described printed circuit board wiring.
3. according to the printed circuit board (PCB) of the described metope switch of claim 1, it is characterized in that, described printed circuit board (PCB) is double sided board, the described first Copper Foil ring and first lead are positioned at the same surface of described printed circuit board (PCB), and perhaps the described first Copper Foil ring and first lead are positioned at the different surfaces of described printed circuit board (PCB).
4. according to the printed circuit board (PCB) of the described metope switch of claim 1, it is characterized in that described printed circuit board (PCB) also is provided with the socket link, described socket link comprises earth terminal, and described ground loop is connected with described earth terminal.
5. according to the printed circuit board (PCB) of the described metope switch of claim 4, it is characterized in that having on the described ground loop and first tie point of described earth terminal apart from minimum, described first tie point is connected with described earth terminal.
6. according to the printed circuit board (PCB) of the described metope switch of claim 1, it is characterized in that the surface of described printed circuit board (PCB) also is provided with key contacts, the second Copper Foil ring and second lead; Each second Copper Foil ring surrounds a key contacts; The described second Copper Foil ring is connected by described second lead, forms the contact loop, and described contact loop is connected with described ground loop.
7. according to the printed circuit board (PCB) of the described metope switch of claim 6, it is characterized in that having on the loop of described contact and second tie point of described ground loop apart from minimum, described second tie point is connected with described ground loop.
8. according to the printed circuit board (PCB) of the described metope switch of claim 1, it is characterized in that, also be provided with antenna, privates and via hole on the 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 the described privates.
9. the printed circuit board (PCB) of described metope switch according to Claim 8 is characterized in that described antenna is electric capacity proximity antenna.
10. the printed circuit board (PCB) of described metope 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 terminal.
11. the printed circuit board (PCB) of described metope 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 described metope 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 |
|---|---|---|---|
| CN 201320093472 CN203181406U (en) | 2013-02-28 | 2013-02-28 | Printed circuit board of wall switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320093472 CN203181406U (en) | 2013-02-28 | 2013-02-28 | Printed circuit board of wall switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203181406U true CN203181406U (en) | 2013-09-04 |
Family
ID=49078058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320093472 Expired - Lifetime CN203181406U (en) | 2013-02-28 | 2013-02-28 | Printed circuit board of wall switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203181406U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152975A (en) * | 2013-02-28 | 2013-06-12 | 江苏惠通集团有限责任公司 | Printed circuit board of wall switch |
-
2013
- 2013-02-28 CN CN 201320093472 patent/CN203181406U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152975A (en) * | 2013-02-28 | 2013-06-12 | 江苏惠通集团有限责任公司 | Printed circuit board of wall switch |
| CN103152975B (en) * | 2013-02-28 | 2016-02-03 | 江苏惠通集团有限责任公司 | The printed circuit board (PCB) of wall surface switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130904 |