CN202256658U - Electric energy meter test pin and pin seat apparatus for electric energy meter pressure connection test using same - Google Patents
Electric energy meter test pin and pin seat apparatus for electric energy meter pressure connection test using same Download PDFInfo
- Publication number
- CN202256658U CN202256658U CN2011203015956U CN201120301595U CN202256658U CN 202256658 U CN202256658 U CN 202256658U CN 2011203015956 U CN2011203015956 U CN 2011203015956U CN 201120301595 U CN201120301595 U CN 201120301595U CN 202256658 U CN202256658 U CN 202256658U
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- testing needle
- electric energy
- energy meter
- grooving
- terminal screw
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Abstract
The utility model discloses an electric energy meter test pin and a pin seat apparatus for an electric energy meter pressure connection test using the same, wherein one end of the test pin is fixed on the pin seat, the other end is inserted into the connector sleeve of an electric energy meter and matched with a terminal screw axially inserted along the connector sleeve in a manner of top pressure fit, the end face of the end matched with the terminal screw in the manner of top pressure fit, of the test pin is provided with a groove dividing the test pin into two elastic claws, two groove walls of the groove are used for matching with the terminal screw in the manner of top pressure fit, and the side walls of the two elastic claws are used for matching with the inner wall of the connector sleeve in a manner of contact fit. Under the action of the pressing force of the test pin and the terminal screw, the terminal screw drives the two elastic claws to open and contact with the inner wall of the connector sleeve, and the test pin is directly contacted with the connector sleeve to form a current loop, thereby being large in contact area, small in contact resistance, and effectively reducing power loss and heat generation.
Description
Technical field
The utility model relates to the tester for testing of electric energy meter, is specifically related to electrical energy meter electricity circuit fast-wiring testing needle and uses the electric energy meter crimping testing needle base device of this testing needle.
Background technology
In electric energy meter testing experiment process; In order to realize the fast-wiring of electric energy meter 11 and proving installation; Present proving installation adopts electric energy meter crimping testing needle base device mostly; As shown in Figure 1; This device comprises that a needle stand 15 and an end are inserted into the testing needle 14 in the needle stand 15, and the other end of testing needle 14 inserts in use in the sleeve 12 of electric energy meter 15 to be measured and presses with the terminal screw that radially assemble along sleeve 12 13 and touches conducting and cooperate, and said testing needle 14, terminal screw 13, sleeve 12 are connected and constituted current return jointly.In order to reduce the contact resistance of current return; Testing needle 14 adopts ag material with terminal screw 13 contact portions, has improved the cost of testing needle 14 like this, but still the big problem of contact resistance is arranged; Cause current return wiring power attenuation big, especially heating is serious when flowing through big electric current.
The utility model content
The purpose of the utility model provides a kind of testing needle that can reduce the current return contact resistance; In order to solve the problem that the wiring power attenuation is big, heating is serious that contact resistance causes greatly, the electric energy meter crimping testing needle that uses this testing needle base device is provided simultaneously.
The electric energy meter testing needle of the utility model adopts following technical scheme: a kind of electric energy meter testing needle; In the sleeve that one end of said testing needle is used for fixing on needle stand, the other end is used to be inserted into electric energy meter and with along sleeve radially the terminal screw roof pressure of plug-in mounting cooperate; Offer on said testing needle and end face terminal screw roof pressure abutting end testing needle is divided into the grooving with two elastic claws; Two cell walls of grooving are used for cooperating with the terminal screw roof pressure, and the sidewall of two elastic claws is used for and sleeve inwall contact matching.
The bottom surface of said grooving is an arc surface.
Be positioned at grooving notch place on two cell walls of said grooving and open and be respectively equipped with the inclined-plane that turns up relatively, V-types are formed on two inclined-planes, and grooving cooperates with the terminal screw roof pressure through two inclined-planes.
Said testing needle is the multidiameter structure, and said grooving is positioned on the enlarged diameter section of testing needle, and the reduced diameter section of said testing needle fixedly is assemblied on the needle stand through screw thread.
The enlarged diameter section of said testing needle and reduced diameter section joint are provided with envelope ring, and the sidewall of envelope ring has and is used for the clamping plane that cooperates with instrument.
The electric energy meter crimping testing needle base device of the utility model adopts following technical scheme: a kind of electric energy meter crimping testing needle base device; In the sleeve that comprise that a needle stand and an end are fixed on the needle stand, the other end is used to be inserted into electric energy meter and with along the sleeve testing needle that cooperates of the terminal screw roof pressure of plug-in mounting radially; Offer on said testing needle and end face terminal screw roof pressure abutting end testing needle is divided into the grooving with two elastic claws; Two cell walls of grooving are used for cooperating with the terminal screw roof pressure, and the sidewall of two elastic claws is used for and sleeve inwall contact matching.
The bottom surface of said grooving is an arc surface.
Be positioned at grooving notch place on two cell walls of said grooving and open and be respectively equipped with the inclined-plane that turns up relatively, V-types are formed on two inclined-planes, and grooving cooperates with the terminal screw roof pressure through two inclined-planes.
Said testing needle is the multidiameter structure, and said grooving is positioned on the enlarged diameter section of testing needle, and the reduced diameter section of said testing needle fixedly is assemblied on the needle stand through screw thread.
The enlarged diameter section of said testing needle and reduced diameter section joint are provided with envelope ring, and the sidewall of envelope ring has and is used for the clamping plane that cooperates with instrument.
Adopt the electric energy meter testing needle and the electric energy meter crimping testing needle base device of said structure; The grooving that testing needle roof pressure end is offered is divided into two elastic claws, and under the effect of testing needle and terminal screw snap-in force, terminal screw orders about two elastic claws and opens and contact with the inwall of sleeve; Testing needle directly contacts the formation current return with sleeve; Contact area is bigger, and contact resistance is little, has effectively reduced power attenuation and heating.
Description of drawings
Fig. 1 is the scheme of installation of existing electric energy meter crimping testing needle base device;
Fig. 2 is the scheme of installation of the electric energy meter crimping testing needle base device of the utility model;
Fig. 3 is that B-B among Fig. 2 is to structural representation;
Fig. 4 is the structural representation of the electric energy meter testing needle embodiment of the utility model;
Fig. 5 is the left view of Fig. 4.
Embodiment
The embodiment of the electric energy meter testing needle of the utility model: shown in Fig. 2-5, an end of testing needle 4 offers the grooving that extends along testing needle 4 radial direction, and grooving is divided into testing needle 4 structure with two elastic claws 41.During assembling; Fixedly being inserted on the needle stand 5, offering in the sleeve 2 that the grooving end inserts electric energy meter 1 of testing needle 4 away from the grooving end; Under the effect of snap-in force; And two cell walls of groove cooperate with terminal screw 3 roof pressures that radially assemble along sleeve 2, and simultaneously terminal screw 3 orders about two elastic claws 41 and opens to both sides, and the sidewall of two elastic claws 41 contacts with the inwall of sleeve 2.
In the foregoing description; The bottom surface of said grooving is an arcwall face, and is major arc, and this arcwall face is through offering the through hole that links to each other with the bottom land of grooving 42 realizations of extending along its radial direction on testing needle 4; At two elastic claws 41 when open both sides; Reduce stress and concentrated, and this major arc structure increased the groove width of grooving bottom, increased the elasticity between two elastic claws 41.In other embodiments, also can not offer through hole 42.
In the foregoing description; Two cell walls of said grooving offer the inclined-plane that turns up relatively respectively; Two inclined-planes constitute v-shaped structure, constitute the V-shaped groove that extends along testing needle 4 radial direction, and grooving is opened in the bottom land realization of V-shaped groove; When concrete operations, two inclined-planes of V-shaped groove cooperate with terminal screw 3 roof pressures respectively.In other embodiments, the inclined-plane of V-shaped groove also can be the curved surface of almost plane.
In the foregoing description, said testing needle 4 is a multidiameter, and said grooving is opened on the enlarged diameter section of testing needle 4, and the reduced diameter section of testing needle 4 is provided with screw thread, and testing needle 4 fixedly is assemblied on the needle stand 5 through screw thread.In other embodiments, testing needle 4 also can adopt isometrical axle, or thread segment is the multidiameter of enlarged diameter section.
In the foregoing description, the enlarged diameter section of said testing needle 4 and reduced diameter section joint are provided with envelope ring 43, and the outer peripheral face of envelope ring 43 has six clamping planes that cooperate with instrument such as spanner, is convenient to testing needle 4 is installed on the needle stand 5.In other embodiments, also can adopt outer peripheral face to have two or four or eight clamping planes that cooperate with instruments such as spanners.
The foregoing description is screwed into needle stand 5 through spanner with testing needle 4 in use, testing needle 4 is inserted in the sleeve 2 of electric energy meter 1 the corresponding terminal screw 3 of its V-shaped groove again.Under the effect of snap-in force, two elastic claws 41 of terminal screw 3 extruding testing needles 4 make two elastic claws 41 open to both sides, and contacts the formation current path with the inwall of sleeve 2.
The embodiment of the electric energy meter crimping testing needle base device of the utility model: shown in Fig. 2-5; Constitute by testing needle 4 and needle stand 5; The structure of testing needle 4 is consistent with the structure of the testing needle of the foregoing description; Its content repeats no more at this, offers the threaded hole with testing needle 4 threaded engagement on the said needle stand 5.
Claims (10)
1. electric energy meter testing needle; In the sleeve that one end of said testing needle is used for fixing on needle stand, the other end is used to be inserted into electric energy meter and with along sleeve radially the terminal screw roof pressure of plug-in mounting cooperate; It is characterized in that: offer on said testing needle and end face terminal screw roof pressure abutting end testing needle is divided into the grooving with two elastic claws; Two cell walls of grooving are used for cooperating with the terminal screw roof pressure, and the sidewall of two elastic claws is used for and sleeve inwall contact matching.
2. electric energy meter testing needle according to claim 1 is characterized in that: the bottom surface of said grooving is an arc surface.
3. electric energy meter testing needle according to claim 1 and 2 is characterized in that: be positioned at grooving notch place on two cell walls of said grooving and offer to the inclined-plane that turns up, V-type is formed on two inclined-planes, and grooving cooperates with the terminal screw roof pressure through two inclined-planes.
4. electric energy meter testing needle according to claim 3 is characterized in that: said testing needle is the multidiameter structure, and said grooving is positioned on the enlarged diameter section of testing needle, and the reduced diameter section of said testing needle fixedly is assemblied on the needle stand through screw thread.
5. electric energy meter testing needle according to claim 4 is characterized in that: the enlarged diameter section of said testing needle and reduced diameter section joint are provided with envelope ring, and the sidewall of envelope ring has and is used for the clamping plane that cooperates with instrument.
6. one kind is used the electric energy meter crimping testing needle base device of testing needle according to claim 1; In the sleeve that comprise that a needle stand and an end are fixed on the needle stand, the other end is used to be inserted into electric energy meter and with along the sleeve testing needle that cooperates of the terminal screw roof pressure of plug-in mounting radially; It is characterized in that: offer on said testing needle and end face terminal screw roof pressure abutting end testing needle is divided into the grooving with two elastic claws; Two cell walls of grooving are used for cooperating with the terminal screw roof pressure, and the sidewall of two elastic claws is used for and sleeve inwall contact matching.
7. electric energy meter crimping testing needle base device according to claim 6, it is characterized in that: the bottom surface of said grooving is an arc surface.
8. according to claim 6 or 7 described electric energy meter crimping testing needle base devices; It is characterized in that: be positioned at grooving notch place on two cell walls of said grooving and offer to the inclined-plane that turns up; V-type is formed on two inclined-planes, and grooving cooperates with the terminal screw roof pressure through two inclined-planes.
9. electric energy meter crimping testing needle base device according to claim 8, it is characterized in that: said testing needle is the multidiameter structure, and said grooving is positioned on the enlarged diameter section of testing needle, and the reduced diameter section of said testing needle fixedly is assemblied on the needle stand through screw thread.
10. electric energy meter crimping testing needle base device according to claim 7 is characterized in that: the enlarged diameter section of said testing needle and reduced diameter section joint are provided with envelope ring, and the sidewall of envelope ring has and is used for the clamping plane that cooperates with instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203015956U CN202256658U (en) | 2011-08-18 | 2011-08-18 | Electric energy meter test pin and pin seat apparatus for electric energy meter pressure connection test using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203015956U CN202256658U (en) | 2011-08-18 | 2011-08-18 | Electric energy meter test pin and pin seat apparatus for electric energy meter pressure connection test using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202256658U true CN202256658U (en) | 2012-05-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203015956U Expired - Lifetime CN202256658U (en) | 2011-08-18 | 2011-08-18 | Electric energy meter test pin and pin seat apparatus for electric energy meter pressure connection test using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202256658U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696569A (en) * | 2019-01-23 | 2019-04-30 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of general-purpose type electric energy meter, which connects to take out stitches, uses crimp type terminal |
| CN110133346A (en) * | 2019-06-26 | 2019-08-16 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of connection structure reducing electric energy surface contact resistance |
-
2011
- 2011-08-18 CN CN2011203015956U patent/CN202256658U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696569A (en) * | 2019-01-23 | 2019-04-30 | 国网内蒙古东部电力有限公司电力科学研究院 | A kind of general-purpose type electric energy meter, which connects to take out stitches, uses crimp type terminal |
| CN110133346A (en) * | 2019-06-26 | 2019-08-16 | 广东省计量科学研究院（华南国家计量测试中心） | A kind of connection structure reducing electric energy surface contact resistance |
| CN110133346B (en) * | 2019-06-26 | 2024-01-26 | 广东省计量科学研究院（华南国家计量测试中心） | Connection structure for reducing contact resistance of electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN STAR INSTRUMENT CO., LTD. Free format text: FORMER OWNER: ZHIDU INVESTMENT CO., LTD. Effective date: 20150813 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHIDU INVESTMENT CO., LTD. Free format text: FORMER NAME: HENAN STAR HI-TECH CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 450001 No. 38 shuttle Road, Zhengzhou hi tech Development Zone, Henan, China Patentee after: Wisdom of investment Limited by Share Ltd. Address before: 450001 No. 38 shuttle Road, Zhengzhou hi tech Development Zone, Henan, China Patentee before: Henan Star Hi-tech Co.,Ltd. |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20150813 Address after: Longgang District of Shenzhen City, Guangdong province 518000 Baolong Industrial City Star Industrial Park Patentee after: SHENZHEN STAR INSTRUMENT Co.,Ltd. Address before: 450001 No. 38 shuttle Road, Zhengzhou hi tech Development Zone, Henan, China Patentee before: Wisdom of investment Limited by Share Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |