CN116500537B - Anti-misoperation device for voltage measurement of three-phase four-wire electric energy meter - Google Patents
Anti-misoperation device for voltage measurement of three-phase four-wire electric energy meter Download PDFInfo
- Publication number
- CN116500537B CN116500537B CN202310770763.3A CN202310770763A CN116500537B CN 116500537 B CN116500537 B CN 116500537B CN 202310770763 A CN202310770763 A CN 202310770763A CN 116500537 B CN116500537 B CN 116500537B
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- block
- metal
- probe
- piece
- electric energy
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- 238000005259 measurement Methods 0.000 title claims abstract description 25
- 239000002184 metal Substances 0.000 claims abstract description 83
- 229910052751 metal Inorganic materials 0.000 claims abstract description 83
- 239000000523 sample Substances 0.000 claims abstract description 69
- 238000001514 detection method Methods 0.000 claims abstract description 30
- 229910052754 neon Inorganic materials 0.000 claims abstract description 22
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims abstract description 22
- 230000002265 prevention Effects 0.000 claims abstract description 10
- 238000006073 displacement reaction Methods 0.000 claims description 22
- 238000006243 chemical reaction Methods 0.000 claims description 19
- 229910000906 Bronze Inorganic materials 0.000 claims description 3
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000010974 bronze Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- IYRDVAUFQZOLSB-UHFFFAOYSA-N copper iron Chemical compound [Fe].[Cu] IYRDVAUFQZOLSB-UHFFFAOYSA-N 0.000 claims description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- BSPSZRDIBCCYNN-UHFFFAOYSA-N phosphanylidynetin Chemical compound [Sn]#P BSPSZRDIBCCYNN-UHFFFAOYSA-N 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 2
- 206010066054 Dysmorphism Diseases 0.000 claims 2
- 238000005457 optimization Methods 0.000 description 6
- 210000003813 thumb Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
Abstract
The invention discloses a voltage measurement misoperation prevention device of a three-phase four-wire electric energy meter, which comprises a universal meter and a plurality of groups of connecting wires, wherein one end of each connecting wire is provided with an inserting head, the other end of each connecting wire is provided with a detection probe, a metal probe is arranged in the detection probe, one side of each metal probe is connected with a resistor block in a bonding mode, one side of each resistor block is provided with a neon bulb tube, the outer side of each neon bulb tube is provided with a first spring, one end of each metal probe is provided with a metal connecting block, one end of each metal connecting block is provided with a special-shaped connecting sheet, and two sides of the end part of each special-shaped connecting sheet are provided with second springs. Before measurement, whether the neon bulb tube emits light is used for reminding an operator, the measured position is confirmed to be a live wire or a live wire, the color of the handheld detection probe is observed to confirm whether the positive electrode and the negative electrode are correctly connected, the operator is reminded to prevent misoperation, and meanwhile, the metal probe is not connected with a circuit, so that damage to the universal meter is avoided.
Description
Technical Field
The invention belongs to the technical field of electric energy meter measurement, and particularly relates to an anti-misoperation device for voltage measurement of a three-phase four-wire electric energy meter.
Background
The three-phase four-wire electric energy meter is one of electric energy meters, is specially used for measuring electric energy in a three-phase four-wire circuit, and has multiple functions of electric energy metering, load control, user information management and the like. The voltage of the electric energy meter is measured by a universal meter generally so as to obtain the voltage coefficient of the electric energy meter.
If the polarity is reversed when the multimeter is used for measurement, the mechanical pointer type multimeter can be damaged due to the reverse polarity, the digital multimeter is internally provided with the converter, the digital multimeter cannot be damaged, the liquid crystal screen is provided with a negative value reminding function, the service life of the converter is limited, and the problem that the multimeter is damaged due to the reverse polarity can be effectively avoided by arranging the misoperation preventing device for the multimeter.
Disclosure of Invention
Aiming at the problem that the universal meter is prevented from misoperation due to polarity reversal in the prior art, the invention provides the following technical scheme: the utility model provides a three-phase four-wire electric energy meter voltage measurement prevents maloperation device, including universal meter and multiunit connecting wire, connecting wire one end is provided with the bayonet joint, and the connecting wire other end is provided with the detection probe, and the inside metal probe that is provided with of detection probe, metal probe one side laminating is connected with the resistance piece, and resistance piece one side is provided with neon bulb, and neon bulb outside is provided with first spring, and metal probe one end is provided with the metal connecting block, and metal connecting block one end is provided with special-shaped connection piece, and special-shaped connection piece one end is provided with the terminal, terminal one end and connecting wire fixed connection;
the special-shaped connecting piece is fixedly connected with the binding post through a screw, second springs are arranged on two sides of the end part of the special-shaped connecting piece, and a conversion mechanism is arranged between the detection probe and the metal connecting block.
As the preference of above-mentioned technical scheme, conversion mechanism includes the pushing piece, and pushing piece one end activity cup joints on metal connecting block surface, and the pushing piece other end is provided with the displacement piece, displacement piece one end and resistance block fixed surface are connected, and pushing piece one side is provided with cuts fork expansion bracket, cuts fork expansion bracket both ends articulated center respectively with pushing piece and test probe fixed connection, cuts a articulated center fixedly connected with conversion pushing piece in fork expansion bracket middle part.
As the optimization of the technical scheme, the detection probe consists of a hand-held front section, a hand-held middle section and a hand-held rear section, two ends of the hand-held middle section are respectively in threaded sleeve joint with the hand-held front section and the hand-held rear section, and the metal probe and the binding post are respectively fixedly connected with the hand-held front section and the hand-held rear section.
As the preference of the technical scheme, one end of the metal connecting block, which is positioned inside the special-shaped connecting block, is arranged in a boss shape, and two sides of the end part of the special-shaped connecting block are matched with the boss of the metal connecting block.
As the optimization of the technical scheme, the center line of the metal connecting block and the center line of the metal probe are in the same straight line, the end part of the metal connecting block is provided with a plugging groove, and the diameter of the plugging groove of the metal connecting block is the same as that of the metal probe.
As the optimization of the technical scheme, one sides of the displacement block and the pushing piece are slope surfaces, and the displacement block is attached to the slope surfaces of the pushing piece.
As the optimization of the technical scheme, the anti-skid layer is arranged on the surface of the conversion pushing block, and the anti-skid layer of the conversion pushing block is arranged in a concave-convex shape.
As the optimization of the technical scheme, the special-shaped connecting sheet is made of tin phosphor bronze, and the metal probe and the metal connecting block are made of copper-iron alloy materials.
As the optimization of the technical scheme, the pushing piece, the displacement block and the scissor type expansion bracket are made of hard PC materials, and insulating coatings are sprayed on the surfaces of the pushing piece, the displacement block and the scissor type expansion bracket.
The beneficial effects of the invention are as follows:
1. before measurement, whether the neon bulb tube emits light is used for reminding an operator, the measured position is confirmed to be a live wire or a live wire, the color of the handheld detection probe is observed to confirm whether the positive electrode and the negative electrode are correctly connected, the operator is reminded to prevent misoperation, and meanwhile, the metal probe is not connected with a circuit, so that damage to the universal meter is avoided.
2. The switching mechanism is used for contacting the metal connecting block with the metal probe, so that the metal connecting block is connected with the connecting wire to be connected with a circuit of the universal meter, the universal meter can normally perform measurement operation on the electric energy meter, meanwhile, the neon bulb tube is pushed away from a working position and does not emit light any more, and the influence of the light emitted by the neon bulb tube on an operator during measurement operation is avoided.
Drawings
FIG. 1 shows a schematic overall structure of an embodiment of the present invention;
FIG. 2 illustrates a left side view of a detection probe in an embodiment of the present invention;
FIG. 3 shows an internal block diagram of a test probe in an embodiment of the invention;
FIG. 4 shows a left side view of a conversion mechanism in an embodiment of the invention;
in the figure: 1. a multimeter; 2. a connecting wire; 3. a plug; 4. a detection probe; 401. a hand-held front section; 402. a hand-held middle section; 403. holding the rear section by hand; 5. a metal probe; 6. a resistor block; 7. a neon bulb tube; 8. a first spring; 9. a metal connecting block; 10. a special-shaped connecting sheet; 11. binding posts; 12. a screw; 13. a second spring; 14. a pushing piece; 15. a displacement block; 16. a scissor type expansion bracket; 17. and converting the push block.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments.
The invention provides a voltage measurement misoperation prevention device of a three-phase four-wire electric energy meter, as shown in fig. 1-4, the voltage measurement misoperation prevention device comprises a universal meter 1 and a plurality of groups of connecting wires 2, one end of each connecting wire 2 is provided with a plug connector 3, the other end of each connecting wire 2 is provided with a detection probe 4, the inside of each detection probe 4 is provided with a metal probe 5, one side of each metal probe 5 is connected with a resistor block 6 in an attaching way, one side of each resistor block 6 is provided with a neon bulb tube 7, the outer side of each neon bulb tube 7 is provided with a first spring 8, one end of each metal probe 5 is provided with a metal connecting block 9, each metal probe 5 and each metal connecting block 9 are made of copper-iron alloy materials, one end of each metal connecting block 9 is provided with a special-shaped connecting piece 10, each special-shaped connecting piece 10 is made of tin-phosphor bronze, one end of each metal connecting block 9, which is located in the special-shaped connecting piece 10, is arranged in a boss shape, two sides of the end of each special-shaped connecting piece 10 are matched with the boss of the metal connecting piece 9, the center line of each metal connecting block 9 and the center line of each metal probe 5 are in the same straight line, the end of each metal connecting piece 9 is provided with a plug groove, the plug groove is formed in each metal connecting piece 9, the plug connector is the diameter of each metal connecting piece 9 is the plug connector is the plug is the connecting piece, the connecting piece is the connecting and the connecting piece is the connecting connection;
the special-shaped connecting piece 10 is fixedly connected with the binding post 11 through a screw 12, the two sides of the end part of the special-shaped connecting piece 10 are respectively provided with a second spring 13, a conversion mechanism is arranged between the detection probe 4 and the metal connecting block 9, the detection probe 4 consists of a handheld front section 401, a handheld middle section 402 and a handheld rear section 403, the two ends of the handheld middle section 402 are respectively in threaded sleeve connection with the handheld front section 401 and the handheld rear section 403, and the metal probe 5 and the binding post 11 are respectively fixedly connected with the handheld front section 401 and the handheld rear section 403.
When the voltage of the three-phase four-wire electric energy meter is measured, the two plug connectors 3 are respectively inserted into the positive electrode and the negative electrode access grooves of the electric energy meter, the detection probes 4 are held by hands to enable the metal probes 5 to be in contact with the binding posts 11 of the three-phase four-wire electric energy meter, if the binding posts 11 are fire wires, the neon bulb tube 7 emits light to prompt, whether the detection probes 4 are red (positive electrodes) is observed, when the handheld detection probes 4 are black, the two detection probes 4 are wrongly operated, if the binding posts 11 are zero wires, the neon bulb tube 7 does not emit light, whether the detection probes 4 are black is observed, when the handheld detection probes 4 are red, the two detection probes 4 are wrongly operated, after the detection probes 4 are adjusted, the conversion mechanism is used to push the metal connection blocks 9 to be in contact with the metal probes 5, meanwhile, the resistance blocks 6 and the neon bulb tube 7 are pushed away from the surface of the metal probes 5, in the moving process of the metal connection blocks 9, one ends of the special-shaped connection pieces 10 are extruded and deformed, the second springs 13 on two sides are extruded and deformed, and the special-shaped connection pieces 9 are tightly contacted with the lug boss-shaped ends of the metal connection blocks 10, and the metal connection blocks 10 are tightly connected with the binding posts 11, and the measurement of the metal connection blocks can be tightly measured.
Before measurement, whether the neon bulb tube 7 emits light is used for reminding an operator, the measured position is confirmed to be a live wire or a live wire, the color of the handheld detection probe 4 is observed to confirm whether the connection of the anode and the cathode is correct, the operator is reminded to prevent misoperation, and meanwhile, the metal probe 5 is not connected with a circuit, so that the universal meter 1 is prevented from being damaged.
As shown in fig. 3-4, the conversion mechanism comprises a push piece 14, one end of the push piece 14 is movably sleeved on the surface of the metal connecting block 9, a displacement block 15 is arranged at the other end of the push piece 14, the displacement block 15 and one side of the push piece 14 are all in slope surface arrangement, the displacement block 15 is attached to the slope surface of the push piece 14, one end of the displacement block 15 is fixedly connected with the surface of the resistor block 6, a scissor type expansion bracket 16 is arranged at one side of the push piece 14, the surfaces of the push piece 14, the displacement block 15 and the scissor type expansion bracket 16 are all made of hard PC materials, insulating coatings are sprayed on the surfaces of the push piece 14, the displacement block 15 and the scissor type expansion bracket 16, the two end hinge centers of the scissor type expansion bracket 16 are respectively fixedly connected with the push piece 14 and the detection probe 4, a conversion push block 17 is fixedly connected to the middle part of the scissor type expansion bracket 16, an anti-skid layer is arranged on the surface of the conversion push block 17, and the anti-skid layer of the conversion push block 17 is in concave-convex shape.
After the position of the detection probe 4 is adjusted, the thumb pushes the conversion push block 17 to enable the scissor type telescopic frame 16 to extend, the uneven anti-slip layer prevents the conversion push block 17 from separating from the thumb, as the displacement block 15 and one side of the push block 14 are all slope surfaces, the displacement block 15 is attached to the slope surface of the push block 14, the push block 14 is pushed by the displacement block 15 under the extension of the scissor type telescopic frame 16, the moving speed of the push block 14 is increased, the push block is reduced until the push block 14 moves to the bottom of the resistor block 6 to separate the resistor block from the metal probe 5, the resistor block 6 drives the neon bulb tube 7 to move to compress the first spring 8, the luminous neon bulb tube 7 does not emit light any more, the push block 14 moves the metal connecting block 9 to be in contact with the metal probe 5, and the metal probe 5 can be connected with the connecting wire 2 through the metal connecting block 9 and the special-shaped connecting piece 10.
The conversion mechanism is used for enabling the metal connecting block 9 to be in contact with the metal probe 5, so that the metal connecting block 9 is connected with the connecting wire 2 to be in line joint with the universal meter 1, the universal meter 1 can normally conduct measurement operation on the electric energy meter, meanwhile, the neon bulb tube 7 is pushed away from a working position and does not emit light any more, and the influence of light emitted by the neon bulb tube 7 on operators during measurement operation is avoided.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting.
Claims (8)
1. Anti-misoperation device for voltage measurement of three-phase four-wire electric energy meter, which is characterized by comprising: universal meter (1) and multiunit connecting wire (2), connecting wire (2) one end is provided with bayonet joint (3), the connecting wire (2) other end is provided with detection probe (4), detection probe (4) inside is provided with metal probe (5), metal probe (5) one side laminating is connected with resistance block (6), resistance block (6) one side is provided with neon bulb fluorescent tube (7), neon bulb fluorescent tube (7) outside is provided with first spring (8), metal probe (5) one end is provided with metal connecting block (9), metal connecting block (9) one end is provided with dysmorphism connection piece (10), dysmorphism connection piece (10) one end is provided with terminal (11), terminal (11) one end and connecting wire (2) fixed connection;
the special-shaped connecting piece (10) is fixedly connected with the binding post (11) through a screw (12), second springs (13) are arranged on two sides of the end part of the special-shaped connecting piece (10), a switching mechanism is arranged between the detection probe (4) and the metal connecting piece (9), the metal connecting piece (9) is pushed to be in contact with the metal probe (5) by using the switching mechanism, and meanwhile the resistance block (6) and the neon bulb tube (7) are pushed away from the surface of the metal probe (5);
the conversion mechanism comprises a pushing piece (14), one end of the pushing piece (14) is movably sleeved on the surface of the metal connecting block (9), the other end of the pushing piece (14) is connected with a displacement block (15) in a joint mode, one end of the displacement block (15) is fixedly connected with the surface of the resistor block (6), one side of the pushing piece (14) is provided with a scissor type telescopic frame (16), one end of the scissor type telescopic frame (16) is hinged to the center and the pushing piece (14) in a fixed connection mode, the other end of the scissor type telescopic frame (16) is hinged to the center and is fixedly connected with the detection probe (4), and one hinge center in the middle of the scissor type telescopic frame (16) is fixedly connected with a conversion pushing block (17).
2. The voltage measurement misoperation prevention device of the three-phase four-wire electric energy meter according to claim 1, characterized in that the detection probe (4) consists of a hand-held front section (401), a hand-held middle section (402) and a hand-held rear section (403), two ends of the hand-held middle section (402) are respectively in threaded sleeve connection with the hand-held front section (401) and the hand-held rear section (403), and the metal probe (5) and the binding post (11) are respectively fixedly connected with the hand-held front section (401) and the hand-held rear section (403).
3. The misoperation prevention device for voltage measurement of the three-phase four-wire electric energy meter according to claim 1 is characterized in that one end of the metal connecting block (9) positioned in the special-shaped connecting block (10) is arranged in a boss shape, and two sides of the end of the special-shaped connecting block (10) are matched with boss positions of the metal connecting block (9).
4. The misoperation prevention device for three-phase four-wire electric energy meter voltage measurement according to claim 1 is characterized in that the center line of the metal connecting block (9) and the center line of the metal probe (5) are in the same straight line, the end part of the metal connecting block (9) is provided with a plugging groove, and the diameter of the plugging groove of the metal connecting block (9) is the same as that of the metal probe (5).
5. The misoperation prevention device for voltage measurement of the three-phase four-wire electric energy meter according to claim 1 is characterized in that one side of a displacement block (15) and one side of a pushing piece (14) are all slope surfaces, and the displacement block (15) is attached to the slope surface of the pushing piece (14).
6. The misoperation prevention device for voltage measurement of the three-phase four-wire electric energy meter according to claim 1 is characterized in that an anti-slip layer is arranged on the surface of the conversion push block (17), and the anti-slip layer of the conversion push block (17) is arranged in a concave-convex shape.
7. The misoperation prevention device for three-phase four-wire electric energy meter voltage measurement according to claim 1 is characterized in that the special-shaped connecting piece (10) is made of tin phosphor bronze, and the metal probe (5) and the metal connecting piece (9) are made of copper-iron alloy materials.
8. The misoperation prevention device for voltage measurement of the three-phase four-wire electric energy meter according to claim 1 is characterized in that the pushing piece (14), the displacement block (15) and the scissor type telescopic frame (16) are made of hard PC materials, and insulating coatings are sprayed on the surfaces of the pushing piece (14), the displacement block (15) and the scissor type telescopic frame (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310770763.3A CN116500537B (en) | 2023-06-28 | 2023-06-28 | Anti-misoperation device for voltage measurement of three-phase four-wire electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310770763.3A CN116500537B (en) | 2023-06-28 | 2023-06-28 | Anti-misoperation device for voltage measurement of three-phase four-wire electric energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116500537A CN116500537A (en) | 2023-07-28 |
| CN116500537B true CN116500537B (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310770763.3A Active CN116500537B (en) | 2023-06-28 | 2023-06-28 | Anti-misoperation device for voltage measurement of three-phase four-wire electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116500537B (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU54050A1 (en) * | 1966-09-05 | 1967-09-07 | ||
| FR2408146A1 (en) * | 1977-11-03 | 1979-06-01 | Capelin Sa | Multimeter control contact probe - has neon lamp in parallel with fusible part within probe body consisting of two inseparable cylindrical half shells |
| CN2078883U (en) * | 1990-04-17 | 1991-06-12 | 赵仕俊 | Multi-functional test pencil for multitester |
| US5235268A (en) * | 1991-11-13 | 1993-08-10 | Harthcock Jerry D | Test and measurement system |
| CN2397494Y (en) * | 1999-10-20 | 2000-09-20 | 张宝华 | Universal meter-electroprobe |
| CN2429833Y (en) * | 2000-04-04 | 2001-05-09 | 马洪烨 | Testing probe |
| JP2010060316A (en) * | 2008-09-01 | 2010-03-18 | Masashi Okuma | Anisotropic conductive member and measuring substrate having anisotropic conductivity |
| CN203084064U (en) * | 2012-10-07 | 2013-07-24 | 国家电网公司 | Multifunctional electroscope |
| CN104683531A (en) * | 2015-02-10 | 2015-06-03 | 冯春魁 | Portable digital intelligent equipment and strong current detecting method |
| CN110716077A (en) * | 2019-11-06 | 2020-01-21 | 广州百士臣科技有限公司 | Energy-saving universal meter with function of preventing false touch |
| CN215297582U (en) * | 2021-07-06 | 2021-12-24 | 铜仁职业技术学院 | Portable circuit detection device |
| JP2023007843A (en) * | 2021-07-02 | 2023-01-19 | 山一電機株式会社 | Contact probe and assembly method therefor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7224159B2 (en) * | 2002-06-12 | 2007-05-29 | The Stanley Works | Foldable multimeter |
-
2023
- 2023-06-28 CN CN202310770763.3A patent/CN116500537B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| LU54050A1 (en) * | 1966-09-05 | 1967-09-07 | ||
| FR2408146A1 (en) * | 1977-11-03 | 1979-06-01 | Capelin Sa | Multimeter control contact probe - has neon lamp in parallel with fusible part within probe body consisting of two inseparable cylindrical half shells |
| CN2078883U (en) * | 1990-04-17 | 1991-06-12 | 赵仕俊 | Multi-functional test pencil for multitester |
| US5235268A (en) * | 1991-11-13 | 1993-08-10 | Harthcock Jerry D | Test and measurement system |
| CN2397494Y (en) * | 1999-10-20 | 2000-09-20 | 张宝华 | Universal meter-electroprobe |
| CN2429833Y (en) * | 2000-04-04 | 2001-05-09 | 马洪烨 | Testing probe |
| JP2010060316A (en) * | 2008-09-01 | 2010-03-18 | Masashi Okuma | Anisotropic conductive member and measuring substrate having anisotropic conductivity |
| CN203084064U (en) * | 2012-10-07 | 2013-07-24 | 国家电网公司 | Multifunctional electroscope |
| CN104683531A (en) * | 2015-02-10 | 2015-06-03 | 冯春魁 | Portable digital intelligent equipment and strong current detecting method |
| CN110716077A (en) * | 2019-11-06 | 2020-01-21 | 广州百士臣科技有限公司 | Energy-saving universal meter with function of preventing false touch |
| JP2023007843A (en) * | 2021-07-02 | 2023-01-19 | 山一電機株式会社 | Contact probe and assembly method therefor |
| CN215297582U (en) * | 2021-07-06 | 2021-12-24 | 铜仁职业技术学院 | Portable circuit detection device |
Non-Patent Citations (1)
| Title |
|---|
| 低压试电笔的多种用法;陈尚志;机床电器(第5期);第57-58页 * |
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| Publication number | Publication date |
|---|---|
| CN116500537A (en) | 2023-07-28 |
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