CN112230034A - Watt-hour meter capable of limiting disconnection - Google Patents
Watt-hour meter capable of limiting disconnection Download PDFInfo
- Publication number
- CN112230034A CN112230034A CN202010989733.8A CN202010989733A CN112230034A CN 112230034 A CN112230034 A CN 112230034A CN 202010989733 A CN202010989733 A CN 202010989733A CN 112230034 A CN112230034 A CN 112230034A
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- Prior art keywords
- nut
- plate
- screw
- hour meter
- shaped
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- Pending
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- 230000005611 electricity Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/12—Circuits for multi-testers, i.e. multimeters, e.g. for measuring voltage, current, or impedance at will
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
Abstract
The utility model provides a restriction kilowatt-hour meter of taking out stitches, includes the kilowatt-hour meter body, is provided with binding post on the kilowatt-hour meter body, and binding post has the screw that supplies wire male jack and intercommunication jack, its characterized in that: the constant-torque bolt is arranged in the screw hole and comprises a screw rod, a first nut, a second nut and an easily-broken structure, the first nut is connected to the screw rod, the second nut is connected with the first nut through the easily-broken structure, the easily-broken structure comprises a plate-shaped operation portion and a connecting portion, the plate-shaped operation portion is perpendicularly connected to the top surface of the first nut, the connecting portion is connected to the bottom surface of the second nut, and the connecting portion is connected with the plate-shaped operation portion and forms an easily-broken reducing structure at the connecting position.
Description
Technical Field
The invention relates to an electric meter.
Background
The watt-hour meter needs to connect a wire into the watt-hour meter through the wiring terminal, the reliability of the wire connection at the wiring terminal directly influences the work of the watt-hour meter, and particularly when the large current of the straight-through watt-hour meter passes through the wiring terminal, if the contact is unreliable, the terminal is easy to generate heat and even cause electrical fire. In the connection of the power lead, bolts are widely used for connection, and the lead and the conductor are tightly pressed through the front ends of the bolts. In the process of connecting the lead by using the bolt, the screwing torque of the bolt is not too large or too small, the torque is too small, the contact is not reliable, and the faults are easily caused; if the torque is too large, the lead and the connection terminal are easily broken, and also an electrical failure is easily caused.
And the watt-hour meter is used as an electric energy metering device and is a shared device between an energy provider and a user. After the installation of the equipment is completed, multiple methods such as lead sealing, device detection and the like are generally needed to limit the operation of the watt-hour meter, so that the wires are prevented from being assembled and disassembled by illegal personnel, and illegal behaviors such as power stealing and the like are avoided.
Disclosure of Invention
The invention aims to provide a watt-hour meter capable of limiting disconnection aiming at the defects of the prior art.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a restriction kilowatt-hour meter of taking out stitches, includes the kilowatt-hour meter body, is provided with binding post on the kilowatt-hour meter body, and binding post has the screw that supplies wire male jack and intercommunication jack, its characterized in that: the constant-torque bolt is arranged in the screw hole and comprises a screw rod, a first nut, a second nut and an easily-broken structure, the first nut is connected to the screw rod, the second nut is connected with the first nut through the easily-broken structure, the easily-broken structure comprises a plate-shaped operation portion and a connecting portion, the plate-shaped operation portion is perpendicularly connected to the top surface of the first nut, the connecting portion is connected to the bottom surface of the second nut, and the connecting portion is connected with the plate-shaped operation portion and forms an easily-broken reducing structure at the connecting position.
The electric meter body is provided with a counter bore used for hiding the first screw cap and the plate-shaped operation part.
The counter bore is rectangular.
The connecting part is a plate-shaped structure vertically connected with the plate-shaped operating part.
The screw, the first nut, the second nut and the easy-breaking structure are integrally formed.
The screw, the first nut, the second nut and the breakable structure are coaxially distributed.
The connecting part is of an inverted cone structure.
The invention has the following beneficial effects:
during the operation with the wire insert in the jack, adopt conventional assembly and disassembly tools operation second nut rotatory to make the bolt rotatory in the screw, the bolt moves down and withholds the wire in the jack, when the moment of torsion reaches the unable value that bears of breakable structure, breakable structure fracture makes the separation of second nut, just so can reach the effect of permanent moment of torsion, prevent that the bolt from being screwed up or too loose, and influence the electrically conductive connection of wire, in addition because platelike operating portion is non-standard special-shaped structure, only need adopt special-shaped assembly and disassembly tools can operate, can restrict illegal dismouting like this, like the illegal overlap joint operation of kilowatt-hour meter, prevent the action of stealing electricity.
The counter bore is used for hiding the plate-shaped operating part, so that the plate-shaped operating part cannot be operated from the side surface, and only can be operated from the top by adopting a special-shaped assembling and disassembling tool, thereby increasing the difficulty of illegally assembling and disassembling the plate-shaped operating part.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view showing the structure of the wiring portion of the present invention.
Fig. 3 is a schematic structural view of the constant-torque bolt according to the first embodiment.
Fig. 4 is a schematic structural view of a constant-torque bolt according to a second embodiment.
Detailed Description
Referring to fig. 1 to 3, the watt-hour meter with disconnection limiting function comprises a watt-hour meter body 1, wherein a connecting terminal is arranged on the watt-hour meter body 1, the connecting terminal is provided with a jack 21 for inserting a lead and a screw hole 22 communicated with the jack 21, the screw hole 22 and the jack 21 are formed on a conductive metal part 2, the watt-hour meter body is provided with a plurality of conductive metal parts 2 which are arranged transversely at intervals, and the structure of the conductive metal parts 2 is known in the prior art and will not be described in detail herein.
The bolt 3 is arranged in the screw hole 22, the bolt 3 comprises a screw 31, a first nut 32, a second nut 33 and a breakable structure 34, the screw 31, the first nut 32, the second nut 33 and the breakable structure 34 are integrally formed and coaxially distributed, the first nut 32 is connected to the screw 31, the second nut 33 is connected with the first nut 32 through the breakable structure 34, the breakable structure 34 comprises a plate-shaped operating part 343 and a connecting part 341, the plate-shaped operating part 343 is vertically connected to the top surface of the first nut 32, the connecting part 341 is connected to the bottom surface of the second nut 33, the connecting part 341 is an inverted cone structure, the connecting part 341 is connected with the plate-shaped operating part 343 and forms a breakable reducing structure 342 at the connecting part, a plurality of counter holes 11 for hiding the first nut 32 and the plate-shaped operating part 343 are arranged on the watt-hour meter body 1, the counter holes 11 are rectangular, an insulating grid plate 12 is formed between two adjacent counter holes 11, the insulating grids 12 are used for isolating each electrode, and generally, the constant-torque bolts 3 are required to be locked into the rear plate-shaped operating part 343 and not to be higher than the height of the insulating grids 12, so that short-circuit faults can be avoided in many aspects.
The top surface of the second nut 33 is formed with a regular hexagonal groove 331, which can be operated by a conventional removal tool, or the top surface of the second nut 33 can be provided with a straight groove or a cross groove as required, or the outer profile of the second nut 33 can be shaped into a regular hexagon or other shapes that can be operated by a conventional removal tool.
In operation, the wire is inserted into the insertion hole 21, the second nut 33 is operated by a conventional disassembling tool to rotate so that the bolt 3 in the threaded hole 22 is rotated, the bolt 3 is moved downwards to tightly push the wire in the insertion hole 21, when the torque reaches a value that the breakable structure cannot bear, the breakable structure 34 is broken to separate the second nut 33, so that the effect of constant torque can be achieved, the bolt 3 is prevented from being over-tightened or over-loosened, and the conductive connection of the conductive wires is affected, when the second nut 33 and the first nut 32 are separated from the reduced structure by fracture, the plate-shaped operation part 343 forms a line-shaped convex appearance structure, and can be operated by matching with the special-shaped disassembling tool 4 with a line-shaped concave structure, and ensures that the section of the special-shaped disassembling tool 4 is not larger than that of the first nut 32, so that the special-shaped disassembling tool can safely extend into the counter bore to disassemble and the like the bolt 3.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (7)
1. The utility model provides a restriction kilowatt-hour meter of taking out stitches, includes the kilowatt-hour meter body, is provided with binding post on the kilowatt-hour meter body, and binding post has the screw that supplies wire male jack and intercommunication jack, its characterized in that: the constant-torque bolt is arranged in the screw hole and comprises a screw rod, a first nut, a second nut and an easily-broken structure, the first nut is connected to the screw rod, the second nut is connected with the first nut through the easily-broken structure, the easily-broken structure comprises a plate-shaped operation portion and a connecting portion, the plate-shaped operation portion is perpendicularly connected to the top surface of the first nut, the connecting portion is connected to the bottom surface of the second nut, and the connecting portion is connected with the plate-shaped operation portion and forms an easily-broken reducing structure at the connecting position.
2. The limited disconnect electrical meter of claim 1, wherein: the electric meter body is provided with a counter bore used for hiding the first screw cap and the plate-shaped operation part.
3. The limited disconnect electrical meter of claim 2, wherein: the counter bore is rectangular.
4. A disconnect-limiting electricity meter according to claim 1, 2 or 3, wherein: the connecting part is a plate-shaped structure vertically connected with the plate-shaped operating part.
5. A disconnect-limiting electricity meter according to claim 1, 2 or 3, wherein: the screw, the first nut, the second nut and the easy-breaking structure are integrally formed.
6. A disconnect-limiting electricity meter according to claim 1, 2 or 3, wherein: the screw, the first nut, the second nut and the breakable structure are coaxially distributed.
7. A disconnect-limiting electricity meter according to claim 1, 2 or 3, wherein: the connecting part is of an inverted cone structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989733.8A CN112230034A (en) | 2020-09-18 | 2020-09-18 | Watt-hour meter capable of limiting disconnection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989733.8A CN112230034A (en) | 2020-09-18 | 2020-09-18 | Watt-hour meter capable of limiting disconnection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112230034A true CN112230034A (en) | 2021-01-15 |
Family
ID=74107348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010989733.8A Pending CN112230034A (en) | 2020-09-18 | 2020-09-18 | Watt-hour meter capable of limiting disconnection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112230034A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030198528A1 (en) * | 2002-04-12 | 2003-10-23 | Masakatsu Onishi | Torque specifying nut |
| CN2840050Y (en) * | 2005-09-21 | 2006-11-22 | 上海贝岭股份有限公司 | Fixing structure for electronic type electric meter loading terminals |
| US20080253861A1 (en) * | 2007-04-13 | 2008-10-16 | Denso Corporation | Method and unit for shipping a torque limiting assembly |
| US20160322715A1 (en) * | 2015-04-30 | 2016-11-03 | Ilsco Corporation | Torque limited screw for electrical connector |
| CN108825621A (en) * | 2018-08-23 | 2018-11-16 | 广州番禺电缆集团有限公司 | A kind of perseverance torque bolt |
-
2020
- 2020-09-18 CN CN202010989733.8A patent/CN112230034A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030198528A1 (en) * | 2002-04-12 | 2003-10-23 | Masakatsu Onishi | Torque specifying nut |
| CN2840050Y (en) * | 2005-09-21 | 2006-11-22 | 上海贝岭股份有限公司 | Fixing structure for electronic type electric meter loading terminals |
| US20080253861A1 (en) * | 2007-04-13 | 2008-10-16 | Denso Corporation | Method and unit for shipping a torque limiting assembly |
| US20160322715A1 (en) * | 2015-04-30 | 2016-11-03 | Ilsco Corporation | Torque limited screw for electrical connector |
| CN108825621A (en) * | 2018-08-23 | 2018-11-16 | 广州番禺电缆集团有限公司 | A kind of perseverance torque bolt |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210115 |
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| RJ01 | Rejection of invention patent application after publication |