CN108398587B - Telescopic universal meter nib - Google Patents
Telescopic universal meter nib Download PDFInfo
- Publication number
- CN108398587B CN108398587B CN201810393966.4A CN201810393966A CN108398587B CN 108398587 B CN108398587 B CN 108398587B CN 201810393966 A CN201810393966 A CN 201810393966A CN 108398587 B CN108398587 B CN 108398587B
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- CN
- China
- Prior art keywords
- wall
- detection
- multimeter
- connecting pipe
- detection cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000001514 detection method Methods 0.000 claims abstract description 79
- 239000010410 layer Substances 0.000 claims abstract description 36
- 239000011241 protective layer Substances 0.000 claims abstract description 22
- 239000000523 sample Substances 0.000 claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229920000271 Kevlar® Polymers 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000004761 kevlar Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000005259 measurement Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 241001422033 Thestylus Species 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 208000003443 Unconsciousness Diseases 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
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
- G01R1/06—Measuring leads; Measuring probes
- G01R1/067—Measuring probes
- G01R1/06788—Hand-held or hand-manipulated probes, e.g. for oscilloscopes or for portable test instruments
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The invention discloses a telescopic multimeter pen point, which comprises a connecting part, a detection head and a connecting wire, wherein the connecting part is provided with a first connecting part and a second connecting part; the connecting part comprises a connecting pipe, long grooves uniformly distributed on the outer wall of the connecting pipe, threads arranged on the outer wall of the connecting pipe and a fastening nut in threaded connection with the connecting pipe; the detection head comprises a detection cylinder, a probe fixed at one end of the detection cylinder, a hole arranged at the other end of the detection cylinder, a connecting thread A arranged on the inner wall of the hole and a connecting thread B arranged on the outer wall of the detection cylinder; the connecting line comprises a wire, a connector fixed at one end of the wire, a connecting thread C arranged on the outer wall of the connector and a protective layer; the protective layer comprises a first insulating layer wrapped on the lead, a stainless steel wire mesh wrapped on the first insulating layer, a second insulating layer wrapped on the stainless steel wire mesh and an outer protective layer wrapped on the second insulating layer.
Description
Technical Field
The invention relates to the field of electric power detection tools, in particular to a telescopic multimeter pen point.
Background
In recent years, with the increasing number of new substations, the daily workload is gradually increased, a multimeter is required to perform measurement in some works, for example, the daily maintenance work of the substations such as the periodic measurement of the voltage of a storage battery is performed, because the contact of the stylus of the existing multimeter is short, the distance of a terminal required to be measured in the actual measurement work is insufficient, some terminals are relatively close to the inside of equipment due to the problem of equipment installation, the terminal cannot be reached in the measurement, the terminal is possibly touched by a hand by mistake in forced measurement, and serious safety accidents such as equipment short circuit, tripping, electric shock of detection personnel and the like are caused.
In the prior art, because the contact of the multimeter pen is short, the measurement is generally carried out by adopting a method of adding a wire, the wire is directly wound on the contact of the multimeter, because the wire is soft and easy to bend, and the terminals between the terminal rows are dense and have very short relative distance, the situation of mistakenly touching other terminals and wires is very easy to occur, the measurement is inconvenient, and unsafe factors are brought to the safe operation of equipment.
Disclosure of Invention
The invention aims to provide a telescopic multimeter pen point which is simple in structure and can increase the using range of a multimeter.
The invention adopts the following technical scheme:
a telescopic multimeter pen head comprises a connecting part, a detection head and a connecting wire;
the connecting part comprises a connecting pipe, long grooves uniformly distributed on the outer wall of the connecting pipe, threads arranged on the outer wall of the connecting pipe and a fastening nut in threaded connection with the connecting pipe;
one end of the long groove is an open end, and the other end of the long groove is a closed end;
one end of the connecting pipe is a closed end, and the other end of the connecting pipe is an open end;
the detection head comprises a detection cylinder, a probe fixed at one end of the detection cylinder, a hole arranged at the other end of the detection cylinder, a connecting thread A arranged on the inner wall of the hole and a connecting thread B arranged on the outer wall of the detection cylinder;
the connecting line comprises a wire, a connector fixed at one end of the wire, a connecting thread C arranged on the outer wall of the connector and a protective layer;
the connector is in threaded connection with the detection cylinder;
the other end of the lead is connected with the closed end of the connecting pipe;
the protective layer comprises a first insulating layer wrapped on the lead, a stainless steel wire mesh wrapped on the first insulating layer, a second insulating layer wrapped on the stainless steel wire mesh and an outer protective layer wrapped on the second insulating layer.
As a further solution: the connecting pipe, the detection cylinder, the probe and the connector are all made of copper.
As a further solution: the wall thickness of the connecting tube increases linearly in the direction from the closed end to the open end.
As a further solution: the number of the detection heads is more than two.
As a further solution: and the connecting thread A on the inner wall of the hole is matched with the connecting thread B on the outer wall of the detection cylinder.
As a further solution: the outer protective layer is made of Kevlar.
As a further solution: the outer surface of the outer protection layer is uniformly provided with protrusions;
the protrusions are parallel to the conductive lines.
As a further solution: the fastening nut is made of nylon.
As a further solution: and the outer wall of the detection cylinder is coated with an insulating layer.
The invention has the following positive effects:
the universal meter is used as an accessory part of the universal meter, and the application range of the universal meter can be effectively enlarged. When the detection personnel use the universal meter to detect but the pen-shape metre length is not enough, directly overlap the connecting pipe on the pen-shape metre, just can effectively increase the length of pen-shape metre, will detect signal transmission for the universal meter pen-shape metre through probe, wire and connecting pipe. Thus, the detection of the detection position can be conveniently carried out. The safety accidents of short circuit, electric shock and the like of equipment easily caused by mistaken touch, unconscious touch and the like caused by insufficient time during detection by using the meter pen are avoided.
According to the invention, the probe and the connecting pipe are connected through the flexible wire, a detection person can hold the detection cylinder and extend the probe to a place where a multimeter pen cannot extend, on one hand, the wire can play a role in increasing the length, the detection person can place the multimeter on a plane, the trouble of holding the multimeter pen by hand is avoided, on the other hand, when the probe extends into the equipment, the wire can be bent according to the surrounding conditions, the interference of the external environment can be effectively reduced, and the probe can extend into the equipment as far as possible.
When the probe can not touch the detection point after the invention is used, a detector can take out a new detection head and screw the new detection head on the original detection head, so that the detection distance can be increased, and the detection head is continuously increased when the probe can not touch the detection point. Like this, through the connection of a plurality of detection heads, can further increase the detection range of universal meter, make it to carry out direct detection to equipment inside, realized that measuring position and distance are freely controlled, strengthened measuring reliability and accuracy, can not miss other electrified terminals of bumping, strengthened the security of using.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a transverse cross-sectional view of the connecting tube;
FIG. 3 is an axial cross-sectional view of the connecting tube;
FIG. 4 is a cross-sectional view of a wire;
FIG. 5 is a cross-sectional view of a detection cylinder;
wherein: 11 connecting pipes, 12 long grooves, 13 threads, 14 fastening nuts, 21 detection cylinders, 22 probes, 23 holes, 24 connecting threads A, 25 connecting threads B, 31 leads, 32 connectors, 33 connecting threads C, 41 first insulating layers, 42 stainless steel meshes, 43 second insulating layers, 44 outer protective layers, 45 bulges and 5 insulating layers.
Detailed Description
The invention is further illustrated below with reference to fig. 1-5.
The invention adopts the following technical scheme:
a telescopic multimeter pen head comprises a connecting part, a detection head and a connecting wire;
the connecting part comprises a connecting pipe 11, long grooves 12 uniformly distributed on the outer wall of the connecting pipe 11, threads 13 arranged on the outer wall of the connecting pipe 11 and a fastening nut 14 in threaded connection with the connecting pipe 11;
one end of the long groove 12 is an open end, and the other end is a closed end;
one end of the connecting pipe 11 is a closed end, and the other end is an open end;
the detection head comprises a detection cylinder 21, a probe 22 fixed at one end of the detection cylinder 21, a hole 23 arranged at the other end of the detection cylinder 21, a connecting thread A24 arranged on the inner wall of the hole 23 and a connecting thread B25 arranged on the outer wall of the detection cylinder 21;
the connecting line comprises a lead 31, a connector 32 fixed at one end of the lead 31, a connecting thread C33 arranged on the outer wall of the connector 32 and a protective layer;
the connector 32 is in threaded connection with the detection cylinder 21;
the other end of the lead 31 is connected with the closed end of the connecting pipe 11;
the protective layer includes a first insulating layer 41 wrapped on the wire 31, a stainless steel mesh 42 wrapped on the first insulating layer 41, a second insulating layer 43 wrapped on the stainless steel mesh 42, and an outer protective layer 44 wrapped on the second insulating layer 43.
As a further solution: the connecting pipe 11, the detection cylinder 21, the probe 22 and the connector 32 are all made of copper.
As a further solution: the wall thickness of the connecting tube 11 increases linearly in the direction from the closed end to the open end.
As a further solution: the number of the detection heads is more than two.
As a further solution: the connecting thread A24 on the inner wall of the hole 23 matches the connecting thread B25 on the outer wall of the detection cylinder 21.
As a further solution: the outer protective layer 44 is made of kevlar.
As a further solution: the outer surface of the outer protection layer 44 is uniformly provided with protrusions 45;
the protrusion 45 is parallel to the wire 31.
As a further solution: the fastening nut 14 is made of nylon.
As a further solution: the outer wall of the inspection cylinder 21 is coated with an insulating layer 5.
The invention is used as an extension accessory of a multimeter probe, and is further explained by combining a specific detection process.
The general detection can be completed by using a universal meter, and the universal meter pen (hereinafter referred to as a pen) needs to be used when a pen-shaped test meter cannot be contacted with a contact point.
Firstly, the connection pipe 11 is sleeved on the meter pen, the fastening nut 14 is rotated to move towards the direction close to the open end of the connection pipe 11, the outer wall of the connection pipe 11 is divided into a plurality of long strips by the long grooves 12, and the thickness of the long strips is increased towards the direction close to the open end of the connection pipe 11. Thus, the tightening nut 14, when moved, pushes the strip into contact with the stylus, securing it to the stylus by friction.
Then, the testing head is installed, the connector 32 of the lead 31 is screwed into the hole 23 of the testing head, and the connecting thread C33 on the outer wall of the connector 32 is engaged with the connecting thread A24 on the inner wall of the hole 23 of the testing cylinder 21 and then screwed tightly.
After the installation is finished, a tester places the universal meter on a plane, holds the detection cylinder 21 by hands, controls the detection cylinder to move to a monitoring point, reads the reading on the universal meter after the probe 22 is contacted with the monitoring point, and measures for multiple times to obtain an average value.
When the probe 22 can not contact the monitoring point, it indicates that the probe is too short, and at this time, the detection head needs to be added continuously, and the specific process is as follows: the detector takes out the new detection head and screws the new detection head onto the original detection head. At this time, the connecting thread A24 on the inner wall of the hole 23 on the new test head is engaged with the connecting thread B25 on the outer wall of the test cylinder 21 of the original test head, and the two are connected together. The probe 22 of the first head is inserted into the hole 23 of the new head, at this point, the probe 22 of the new head is used to contact the test point, and if the contact is still not possible, the additional heads are added.
The detection head and the connecting part are connected through a connecting line. The connecting wire is composed of a wire 31 and a protective layer wrapped by the wire 31, wherein the wire 31 plays a role in transmitting signals, and the protective layer protects the wire 31. The protective layer 31 is composed of a first insulating layer 41, a stainless steel wire mesh 42, a second insulating layer 43 and an outer protective layer 44, wherein the first insulating layer 41 and the second insulating layer 43 have an insulating function, so that electric leakage in the detection process is avoided; the stainless steel wire mesh 42 is located between the first insulating layer 41 and the second insulating layer 43, and mainly plays a role in tensile strength to prevent the wire 31 from being broken; the outer protective layer 44 is located at the outermost layer, and mainly plays a role of protection to prevent the second insulating layer 43 from being scratched. Evenly increased protrudingly 45 on the surface of outer protective layer 44, can increase outer protective layer 44's wantonly on the one hand, on the other hand can frictional force, makes things convenient for the measurement personnel to hold between fingers.
The detection cylinder 21 is divided into two sections, the diameter of the first section is smaller than that of the second section, the probe 22 is installed on the first section, the hole 23 is formed in the second section, when the two detection heads are connected, the first section of the first detection head is just completely positioned in the hole 23 of the second section of the second detection head, and therefore the exposed part of the first detection head is completely wrapped, and the possibility of electric shock is avoided.
The insulating layer 5 wraps the second section of the detection cylinder 21, so that insulating paint or crossed insulating layers can be used, and electric shock accidents of detection personnel in the holding process can be avoided.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, and although the present invention is described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or equivalent replaced by some technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. The utility model provides a telescopic universal meter nib which characterized in that: comprises a connecting part, a detection head and a connecting wire;
the connecting part comprises a connecting pipe (11), long grooves (12) uniformly distributed on the outer wall of the connecting pipe (11), threads (13) arranged on the outer wall of the connecting pipe (11) and a fastening nut (14) in threaded connection with the connecting pipe (11);
one end of the long groove (12) is an open end, and the other end of the long groove is a closed end;
one end of the connecting pipe (11) is a closed end, and the other end of the connecting pipe is an open end;
the detection head comprises a detection cylinder (21), a probe (22) fixed at one end of the detection cylinder (21), a hole (23) arranged at the other end of the detection cylinder (21), a connecting thread A (24) arranged on the inner wall of the hole (23) and a connecting thread B (25) arranged on the outer wall of the detection cylinder (21);
the connecting line comprises a lead (31), a connector (32) fixed at one end of the lead (31), a connecting thread C (33) arranged on the outer wall of the connector (32) and a protective layer;
the connector (32) is in threaded connection with the detection cylinder (21);
the other end of the lead (31) is connected with the closed end of the connecting pipe (11);
the protective layer comprises a first insulating layer (41) wrapped on the lead (31), a stainless steel wire mesh (42) wrapped on the first insulating layer (41), a second insulating layer (43) wrapped on the stainless steel wire mesh (42) and an outer protective layer (44) wrapped on the second insulating layer (43);
when the detection head needs to be added continuously, the connecting thread A (24) on the inner wall of the hole (23) on the new detection head is meshed with the connecting thread B (25) on the outer wall of the detection cylinder 21 of the original detection head.
2. The retractable multimeter tip of claim 1, wherein: the connecting pipe (11), the detection cylinder (21), the probe (22) and the connector (32) are all made of copper.
3. The retractable multimeter tip of claim 1, wherein: the wall thickness of the connecting tube (11) increases linearly in the direction from the closed end to the open end.
4. The retractable multimeter tip of claim 1, wherein: the number of the detection heads is more than two.
5. The retractable multimeter tip of claim 4, wherein: and a connecting thread A (24) on the inner wall of the hole (23) is matched with a connecting thread B (25) on the outer wall of the detection cylinder (21).
6. The retractable multimeter tip of claim 1, wherein: the outer protection layer (44) is made of Kevlar.
7. The retractable multimeter tip of claim 6, wherein: the outer surface of the outer protection layer (44) is uniformly provided with protrusions (45);
the protrusion (45) is parallel to the wire (31).
8. The retractable multimeter tip of claim 2, wherein: the fastening nut (14) is made of nylon.
9. The retractable multimeter tip of any one of claims 1-8, wherein: the outer wall of the detection cylinder (21) is coated with an insulating layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810393966.4A CN108398587B (en) | 2018-04-27 | 2018-04-27 | Telescopic universal meter nib |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810393966.4A CN108398587B (en) | 2018-04-27 | 2018-04-27 | Telescopic universal meter nib |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108398587A CN108398587A (en) | 2018-08-14 |
| CN108398587B true CN108398587B (en) | 2019-12-31 |
Family
ID=63100709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810393966.4A Active CN108398587B (en) | 2018-04-27 | 2018-04-27 | Telescopic universal meter nib |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108398587B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342886A (en) * | 2018-11-16 | 2019-02-15 | 中车唐山机车车辆有限公司 | Cable connection test device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201503442U (en) * | 2009-08-10 | 2010-06-09 | 刘长亮 | Combined pen multimeter capable of being simultaneously used for routine and precise tightness measurement |
| CN201580104U (en) * | 2009-11-10 | 2010-09-15 | 上海市黄浦区新凌小学 | Telescopic brush pen |
| KR101436457B1 (en) * | 2014-05-22 | 2014-09-01 | 전영하 | Test lead for multimeter having lead wire hole and multimeter having structure to prevent wire broken |
| CN204142778U (en) * | 2014-06-17 | 2015-02-04 | 国家电网公司 | A kind of telescopic instrument test pencil |
| CN204882641U (en) * | 2015-07-23 | 2015-12-16 | 柳州铁道职业技术学院 | Universal meter pen -shape metre cut straightly hole narrow slit probe that declines |
| CN205720328U (en) * | 2016-06-30 | 2016-11-23 | 国网河南偃师市供电公司 | A kind of pen meter of universal meter of accurate measurement |
-
2018
- 2018-04-27 CN CN201810393966.4A patent/CN108398587B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201503442U (en) * | 2009-08-10 | 2010-06-09 | 刘长亮 | Combined pen multimeter capable of being simultaneously used for routine and precise tightness measurement |
| CN201580104U (en) * | 2009-11-10 | 2010-09-15 | 上海市黄浦区新凌小学 | Telescopic brush pen |
| KR101436457B1 (en) * | 2014-05-22 | 2014-09-01 | 전영하 | Test lead for multimeter having lead wire hole and multimeter having structure to prevent wire broken |
| CN204142778U (en) * | 2014-06-17 | 2015-02-04 | 国家电网公司 | A kind of telescopic instrument test pencil |
| CN204882641U (en) * | 2015-07-23 | 2015-12-16 | 柳州铁道职业技术学院 | Universal meter pen -shape metre cut straightly hole narrow slit probe that declines |
| CN205720328U (en) * | 2016-06-30 | 2016-11-23 | 国网河南偃师市供电公司 | A kind of pen meter of universal meter of accurate measurement |
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| Publication number | Publication date |
|---|---|
| CN108398587A (en) | 2018-08-14 |
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