CN205263159U - Electric energy meter part that quality reliability is high - Google Patents
Electric energy meter part that quality reliability is high Download PDFInfo
- Publication number
- CN205263159U CN205263159U CN201521122471.6U CN201521122471U CN205263159U CN 205263159 U CN205263159 U CN 205263159U CN 201521122471 U CN201521122471 U CN 201521122471U CN 205263159 U CN205263159 U CN 205263159U
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- China
- Prior art keywords
- zero line
- connecting needle
- pcba
- sampling
- needle
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Abstract
The utility model discloses an electric energy meter part that quality reliability is high, including the terminal seat and connect the terminal seat subassembly of current transformer and the relay formation on it, the chip is handled in PCBA and the measurement of connecting on it, welding or riveting have zero line voltage connection needle on the terminal seat subassembly, the chip is handled in the measurement, the needle is connected in the zero line sampling, live wire voltage connection needle, the needle is connected to forceful electric power such as relay control needle and light current connection needles such as needle are connected to supplementary terminal, PCBA is last, and carry out forceful electric power connection zone and light current connection zone divides, make forceful electric power connection needle and light current connection needle connect respectively in corresponding region, it comes extension creepage distance to set up the isolation gusset between the strong and weak electric connection zone, avoid the problem of withstand voltage puncture and improve the security performance of electric energy meter. Practice thrift spatial layout again in order to satisfy strong and weak electric zoning scheme, arrange current transformer in the light current connection zone that PCBA is corresponding, and connect the forceful electric power connection zone that PCBA was arranged in to card clothing with its zero line sampling.
Description
Technical field
The utility model relates to a kind of electric energy meter, is specifically related to the electric energy meter that a kind of reliability is high.
Background technology
In electric energy meter, the electrical isolation of strong, weak electricity is to realize by the mode of lengthening spacing distance or insulation sleeve mostly at present, cabling on PCBA and the electrical isolation of components and parts also realize by lengthening spacing distance, but PCBA is connected with the controlling of sampling of the electronic device of outside communication connection and electric energy meter inside and normally connects by cable, because of cable connected mode very flexible, the pad of cable can be arranged on desired location according to PCBA layout situation, and the distance of electrical isolation also can be control.
This design has been continued to use a lot of years, but along with the demand of domestic electric energy meter is increasing, the exposure ratio of various drawbacks is also just larger, and first production is long assembly period, and efficiency is low, and operation is many, and cost of labor is high. It two is that the quality of production that operates artificially is just difficult to ensure, fraction defective is high, and consistent reliability is low.
Our unit has designed hardwired structure between a kind of terminal and PCBA, can solve above defect, but the security performance of electric energy meter is difficult up to standard, considers cost factor, so the area of PCBA and arrangement space are as far as possible compact, so hardwired major defect is embodied in following three aspects:
One, because hard connection comprised multiple forceful electric power connecting needles and light current connecting needle, if the convenience of structural design of only considering each connecting needle decides position, PCBA solder joint pin position, can go out the withstand voltage defect that punctures of strong and weak electricity, easily damage electric energy meter and reduce its security performance.
Two, because the live wire sampling (as manganese copper diverter sampling) of electric energy meter is conventionally on the left side of electric energy meter, the sampling (current transformer sampling) of zero line is conventionally on the right of electric energy meter, and metering process chip on PCBA sampling input/output terminal is directive, for inputting another side output on one side, if from limit, electric energy meter left and right, be that live wire and zero line sampling end directly stretch out electrical connection pin and be firmly connected to the limit, left and right of PCBA, the long meeting of the cabling on PCBA causes weakening of sampled signal, the precision of electric energy meter will be overproof, and can affect the layout of other components and parts.
Utility model content
The purpose of this utility model is to provide a kind of electric energy meter parts when terminal is high with reliability after PCBA is connected firmly with high safety performance.
The utility model discloses the electric energy meter parts that a kind of reliability is high, comprise terminal base and connection current transformer thereon and the terminal base assembly of relay formation, PCBA and connection metering process chip and two carrier wave sockets thereon, on terminal base, welding or riveted joint have auxiliary terminal connecting needle, hot voltage connecting needle and zero line voltage connecting needle, current transformer is connected with zero line sampling connecting needle, on relay, be connected with Control pin, terminal base assembly is by each connecting needle and control pin and PCBA and be welded as a whole, on PCBA, be provided with live wire sampling pad, it is characterized in that: described live wire sampling pad is positioned at the lower-left lateral edges of described PCBA, described metering process chip and carrier wave socket are positioned at the right front of live wire sampling pad successively, described zero line voltage connecting needle is positioned at the nearly right side of this carrier wave socket, described zero line sampling connecting needle and hot voltage connecting needle are positioned at the below of live wire sampling pad successively, described Control pin is positioned at the right side of zero line sampling connecting needle, the lower left of metering process chip, the layout of live wire sampling pad, zero line sampling connecting needle, hot voltage connecting needle, metering process chip and zero line voltage connecting needle makes the lower-left side of PCBA form the forceful electric power join domain taking live wire sampling pad and zero line sampling connecting needle and metering process chip as the Z-type of benchmark, part beyond this region is light current join domain, the pad hole that has each connecting needle to pass on PCBA, the position of described current transformer is corresponding to the light current join domain of PCBA lower right side, and the signals collecting of current transformer realizes by the sample electric welding of connecting needle and PCBA of zero line by sample lower-left side that cable is connected to PCBA of zero line again, described auxiliary terminal connecting needle is connected in the lower right side of Control pin, between the auxiliary terminal connecting needle that on described terminal base, corresponding Control pin is adjacent with it, be provided with strong and weak electricity isolation gusset, the upper corresponding strong and weak electricity isolation of PCBA gusset place is provided with corresponding installing hole, and stretch out outside PCBA the upper end of strong and weak electricity isolation gusset.
The link position of described zero line sampling connecting needle on described PCBA is positioned at the same side-lower forceful electric power join domain of described live wire sampling pad.
The end of described zero line sampling cable is connected with zero line sampling connecting needle fixed block, and described zero line sampling connecting needle is vertically connected on zero line sampling connecting needle fixed block.
The corresponding described zero line sampling of the lower-left side connecting needle fixed block place of described terminal base is provided with clip, the longitudinal center of clip has the location fixing hole, the sidewall that mate with zero line sampling connecting needle fixed block longitudinally to offer wire clamp groove being inserted in for described zero line sampling cable, after zero line sampling connecting needle fixed block is fixing, described zero line sampling connecting needle vertically upward.
Described metering process chip is connected in the right front of the upper live wire sampling pad of PCBA and zero line sampling connecting needle, and when live wire sampling pad inputs to metering process chip with zero line sampling connecting needle, direction is consistent.
The utility model for can make forceful electric power and light current each electrical connection with layout designs can not damage electric energy meter because of withstand voltage puncturing, in the time of conceptual design, first taking live wire sampling pad, metering process chip and zero line sampling connecting needle as benchmark, the lower left of PCBA is divided into forceful electric power region, electrical connection pin in this region is all forceful electric power, outside this region, be all light current region, the electrical connection pin of forceful electric power all designs in forceful electric power region. The withstand voltage isolation method of the Control pin of forceful electric power and the auxiliary terminal connecting needle of light current has adopted strong and weak electricity isolation bar to lengthen creep age distance and has solved, thereby avoids the withstand voltage problem puncturing and improve the security performance of electric energy meter.
The utility model because of the zero line sampling connecting needle of current transformer be forceful electric power sampling, and the right in electric energy meter, the position of current transformer, from the forceful electric power region distance of PCBA away from, so adopted cable to add plug the zero line of current transformer, the design of contact pin, the zero line connecting needle of sampling is fixed on the position on the terminal base left side by the clip that has designed a strap clamp wire casing on the left side of terminal base, while installation in company with PCBA, be weldingly fixed in the forceful electric power region on the PCBA left side, so, the PCBA cabling design of live wire and zero line sampling end is positioned at the same side with welding, and avoid the withstand voltage problem such as puncture. in addition, the zero line sampling connecting needle of current transformer and live wire sampling pad all design the lower left at PCBA, both close together, while inputing to metering process chip, direction is consistent, more measuring accuracy is higher with metering process chip, because of sampled signal from metering process chip more away from, sampled signal there will be decay and causes the inaccurate phenomenon of measuring accuracy.
Brief description of the drawings
Fig. 1 be an embodiment of the utility model structural representation.
Fig. 2 is the structural representation of terminal base assembly in Fig. 1.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the electric energy meter parts that the disclosed this reliability of the present embodiment is high, comprise PCBA1, relay 2, zero line voltage connecting needle 3, metering process chip 4, live wire sampling pad 5, zero line sampling connecting needle 6, hot voltage connecting needle 7, Control pin 8, strong and weak electricity isolation gusset 9, auxiliary terminal connecting needle 10, terminal base 11, zero line sampling connecting needle fixed block 12, current transformer 13, zero line sampling cable 14, clip 15, carrier wave socket 16.
Current transformer 13 and relay 2 are connected in terminal base 11 and form terminal base assembly, and metering process chip 4 is connected on PCBA1. Auxiliary terminal connecting needle 10, hot voltage connecting needle 7 and zero line voltage connecting needle 3 weld or are riveted on terminal base 11. Current transformer 13 is connected with zero line sampling connecting needle 6, is connected with Control pin 8 on relay 2. Terminal base assembly is by each connecting needle and control pin and PCBA1 and be welded as a whole, and is provided with the live wire pad 5 of sampling on PCBA1.
Live wire sampling pad 5 on PCBA1 is arranged at the panel edges of its lower-left side. Current transformer 13 is arranged in the right of terminal base, is connected with zero line sampling cable 14, extensions of turning left of zero line sampling cable 14, and end connects the zero line connecting needle 6 of sampling. The link position of zero line sampling connecting needle 6 on PCBA1 is positioned at the same side-lower forceful electric power join domain of live wire sampling pad 5.
The end of zero line sampling cable 14 is connected with zero line sampling connecting needle fixed block 12, and zero line sampling connecting needle 6 is vertically connected on zero line sampling connecting needle fixed block 12.
The corresponding zero line sampling of lower-left side connecting needle fixed block 12 places of terminal base 11 arrange clip 15, the longitudinal center of clip 15 has the location fixing hole, the sidewall that mate with zero line sampling connecting needle fixed block 12 longitudinally to offer wire clamp groove being inserted in for zero line sampling cable 14, after zero line sampling connecting needle fixed block 12 is fixing, zero line sampling connecting needle 6 vertically upward.
Metering process chip 4 is connected in the right front of the upper live wire sampling pad 5 of PCBA1 and zero line sampling connecting needle 6, and when live wire sampling pad 5 inputs to metering process chip 4 with zero line sampling connecting needle 6, direction is consistent.
Specific implementation method is: first divide the forceful electric power join domain 21 of a Z-type as benchmark as benchmark taking live wire sampling pad and metering process chip in the lower left of PCBA, as the shadow region in Fig. 1, this extra-regional other region is light current join domain. All connection welding of zero line voltage connecting needle 3, metering process chip 4, live wire sampling pad 5, zero line sampling connecting needle 6, hot voltage connecting needle 7, Control pin 8 are all arranged in forceful electric power join domain. At the Control pin 8 of forceful electric power be designed with it strong and weak electricity isolation gusset 9 between the auxiliary terminal connecting needle 10 of adjacent light current, strong and weak electricity isolation gusset 9 directly designs on terminal row, the upper end of strong and weak electricity isolation gusset 9 stretches out in the upper surface of PCBA, for strengthening gap and creep age distance between Control pin 8 and auxiliary terminal connecting needle 10, thereby avoid the withstand voltage problem puncturing and improve the security performance of electric energy meter.
Can find out in conjunction with Fig. 1 and Fig. 2, current transformer 13 is arranged in the right of electric energy meter, but the right of PCBA1 is light current region, and current transformer 13 be sampled as forceful electric power, so the zero line of current transformer sampling connecting needle 6 should design in the forceful electric power region on the PCBA left side and be only appropriate design, so will design a zero line sampling connecting needle fixed block 12 with zero line sampling connecting needle 6 on the zero line sampling cable 14 of current transformer 13, and the clip 15 that has designed a strap clamp wire casing on terminal base 11 is for fixing and location sampling connecting needle fixed block 12. Specific implementation method is for first sampling connecting needle 6 in the lower left rational position of the PCBA1 of comprehensive Design institute layout at live wire sampling pad 5 and zero line, reflection is positioned to the relative position of terminal base 11, then clip 15 structures of design forming strap clamp wire casing on terminal base. Produce while installation, first the zero line sampling cable 14 on current transformer 13 is inserted in the open slot of clip 15 of a strap clamp wire casing on terminal base 11, then the connecting needle fixed block 12 of zero line being sampled is fixed in the location fixing hole of clip 15 of strap clamp wire casing, when PCBA1 when mounted, zero line sampling connecting needle 6 can automatically insert together in the corresponding pad of PCBA1 and weld in company with other electrical connection pin.
Claims (5)
1. the electric energy meter parts that reliability is high, comprise terminal base and connection current transformer thereon and the terminal base assembly of relay formation, PCBA and connection metering process chip and two carrier wave sockets thereon, on terminal base, welding or riveted joint have auxiliary terminal connecting needle, hot voltage connecting needle and zero line voltage connecting needle, current transformer is connected with zero line sampling connecting needle, on relay, be connected with Control pin, terminal base assembly is by each connecting needle and control pin and PCBA and be welded as a whole, on PCBA, be provided with live wire sampling pad, it is characterized in that: described live wire sampling pad is positioned at the lower-left lateral edges of described PCBA, described metering process chip and carrier wave socket are positioned at the right front of live wire sampling pad successively, described zero line voltage connecting needle is positioned at the nearly right side of this carrier wave socket, described zero line sampling connecting needle and hot voltage connecting needle are positioned at the below of live wire sampling pad successively, described Control pin is positioned at the right side of zero line sampling connecting needle, the lower left of metering process chip, the layout of live wire sampling pad, zero line sampling connecting needle, hot voltage connecting needle, metering process chip and zero line voltage connecting needle makes the lower-left side of PCBA form the forceful electric power join domain taking live wire sampling pad and zero line sampling connecting needle and metering process chip as the Z-type of benchmark, part beyond this region is light current join domain, the pad hole that has each connecting needle to pass on PCBA, the position of described current transformer is corresponding to the light current join domain of PCBA lower right side, and the signals collecting of current transformer realizes by the sample electric welding of connecting needle and PCBA of zero line by sample lower-left side that cable is connected to PCBA of zero line again, described auxiliary terminal connecting needle is connected in the lower right side of Control pin, between the auxiliary terminal connecting needle that on described terminal base, corresponding Control pin is adjacent with it, be provided with strong and weak electricity isolation gusset, the upper corresponding strong and weak electricity isolation of PCBA gusset place is provided with corresponding installing hole, and stretch out outside PCBA the upper end of strong and weak electricity isolation gusset.
2. the electric energy meter parts that reliability as claimed in claim 1 is high, is characterized in that: the link position of described zero line sampling connecting needle on described PCBA is positioned at the same side-lower forceful electric power join domain of described live wire sampling pad.
3. the electric energy meter parts that reliability as claimed in claim 1 is high, is characterized in that: the end of described zero line sampling cable is connected with zero line sampling connecting needle fixed block, and described zero line sampling connecting needle is vertically connected on zero line sampling connecting needle fixed block.
4. the electric energy meter parts that reliability as claimed in claim 1 is high, it is characterized in that: the corresponding described zero line sampling of the lower-left side connecting needle fixed block place of described terminal base is provided with clip, the longitudinal center of clip has the location fixing hole, the sidewall that mate with zero line sampling connecting needle fixed block longitudinally to offer wire clamp groove being inserted in for described zero line sampling cable, after zero line sampling connecting needle fixed block is fixing, described zero line sampling connecting needle vertically upward.
5. the electric energy meter parts that reliability as claimed in claim 2 is high, it is characterized in that: described metering process chip is connected in the right front of the upper live wire sampling pad of PCBA and zero line sampling connecting needle, when live wire sampling pad inputs to metering process chip with zero line sampling connecting needle, direction is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122471.6U CN205263159U (en) | 2015-12-31 | 2015-12-31 | Electric energy meter part that quality reliability is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521122471.6U CN205263159U (en) | 2015-12-31 | 2015-12-31 | Electric energy meter part that quality reliability is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205263159U true CN205263159U (en) | 2016-05-25 |
Family
ID=56004681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521122471.6U Withdrawn - After Issue CN205263159U (en) | 2015-12-31 | 2015-12-31 | Electric energy meter part that quality reliability is high |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205263159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510659A (en) * | 2015-12-31 | 2016-04-20 | 威胜集团有限公司 | Electric energy meter component with high quality reliability |
-
2015
- 2015-12-31 CN CN201521122471.6U patent/CN205263159U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510659A (en) * | 2015-12-31 | 2016-04-20 | 威胜集团有限公司 | Electric energy meter component with high quality reliability |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160525 Effective date of abandoning: 20180105 |