WO2013139296A1 - 测试指 - Google Patents
测试指 Download PDFInfo
- Publication number
- WO2013139296A1 WO2013139296A1 PCT/CN2013/073035 CN2013073035W WO2013139296A1 WO 2013139296 A1 WO2013139296 A1 WO 2013139296A1 CN 2013073035 W CN2013073035 W CN 2013073035W WO 2013139296 A1 WO2013139296 A1 WO 2013139296A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- test
- finger
- tip end
- groove
- connecting ball
- Prior art date
Links
Classifications
-
- 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
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/16—Construction of testing vessels; Electrodes therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B3/00—Measuring instruments characterised by the use of mechanical techniques
- G01B3/30—Bars, blocks, or strips in which the distance between a pair of faces is fixed, although it may be preadjustable, e.g. end measure, feeler strip
-
- 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
-
- 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
- G01R1/06711—Probe needles; Cantilever beams; "Bump" contacts; Replaceable probe pins
- G01R1/06733—Geometry aspects
Definitions
- the present invention relates to test fingers, and more particularly to a test finger for determining whether an invasive protection level of an electrical device meets a safety standard. Background technique
- the method for measuring the distance is to place a finger-shaped rod at a position where measurement is required, and then use a caliper to measure the distance from the tip end portion of the rod to the charging member or the charging wire.
- the caliper is limited by space and cannot be effectively measured.
- the engineer has to estimate the distance directly with the eye to determine if the distance is greater than or equal to the minimum safe distance, and the estimated result is sometimes inaccurate.
- the present invention proposes a test finger that can accurately determine whether the distance is greater than or equal to the minimum safe distance.
- This test is used in electrical equipment to accurately determine whether the distance between the tip end of the test finger and the uninsulated live parts or the live conductor is greater than or equal to the minimum safe distance.
- a test finger includes a finger shank portion to which a test portion for distance measurement is connected at a tip end portion of the finger shank portion.
- the finger lever has the same function as the finger-shaped lever of the prior art.
- the tip end portion of the finger lever portion abuts against the housing of the electric device, and the test portion directly faces the tip end of the finger rod portion.
- Test the distance between the part and the uninsulated live parts or live conductors.
- the length of the test portion can be preset, and the length of the selected test portion is the length of the required minimum safety distance.
- the free end of the test portion can be in contact with the charged body (ie, the uninsulated live parts or the live conductor), It indicates that the distance is less than or equal to the minimum safety distance, and conversely, if the free end is not accessible to the charged body, It indicates that the distance is greater than the minimum safety distance, and when the distance is greater than or equal to the minimum safety distance, the safety setting standard is met.
- the charged body ie, the uninsulated live parts or the live conductor
- the test portion is typically a set of test heads having a length corresponding to a minimum safe distance at different voltage levels in the intrusion protection.
- the test portion includes a connecting portion connected to the tip end portion of the finger stem portion and a calibration value portion for measuring the length.
- the requirements for safety distance are not the same.
- the test head system has different calibration length values, it can meet the test under different voltage levels.
- the tip end portion of the finger rod portion is provided with a partial spherical groove, and a magnet is fixedly disposed at a bottom portion of the partial spherical groove, and a connecting ball made of a ferromagnetic material is disposed in the partial spherical groove, the connecting ball is in contact with the magnet, and the connecting ball passes through the magnet
- the magnetic connection is in a partial spherical recess, and a hole for mating with the connecting portion of the test portion is provided on the connecting ball, and the connecting portion of the test portion is inserted in the hole.
- the connecting portion of the test portion is interference-fitted, snapped or magnetically connected to the hole in the connecting ball.
- the connecting ball can be freely rotated in a partial spherical groove in the tip end portion of the finger shank portion, so that the test portion inserted in the hole connecting the balls is also within a certain angle due to the free rotation of the connecting ball. Free swing.
- the direction of the test section can be freely changed, increasing the flexibility of use of the test finger.
- connection between the test portion and the tip end portion of the finger lever portion is a detachable insertion connection, which facilitates the user to replace the test portion of different calibration lengths according to the actual practical voltage.
- the connecting portion of the test portion is interference-fitted, snapped or magnetically connected to the hole in the connecting ball, so that the test portion does not fall out of the hole during the test.
- a middle portion of the end portion of the finger portion where the tip end portion is located is provided with a groove extending to the outer edge of the finger portion, and a tip portion of the finger portion is provided with a partial spherical groove larger than a half sphere.
- a connecting ball having a diameter slightly larger than the diameter of the spherical groove is provided, and a hole for fitting with a connecting portion of the test portion is provided on the connecting ball, and a connecting portion of the test portion is inserted in the hole .
- At the bottom of the trough is a transition from a cylindrical trough having a diameter greater than the width of the trough.
- the connecting portion of the test portion is interference-fitted, snapped or magnetically connected to the hole in the ball.
- connection structure since the through groove of the end portion where the tip end portion of the finger portion is elastically deformed, the ball can be pushed in and latched into a partial spherical groove larger than a half sphere. Inside, and can rotate freely, and the ball does not come out from the tip end of the finger shank. For the purpose of cleanliness Therefore, the advantages of the connection structure being the same or similar to the previous connection structure will not be described here.
- the finger shank is hollow, and a circular crank is rotatably connected at a tip end portion of the finger shank, and the crank rotates around a radial axis of the tip end portion of the finger shank, and a radial edge of the crank is disposed to match the test portion a protruding portion, a connecting portion of the testing portion is sleeved on the protruding portion, a crank is connected to one end of the driving shaft, and the other end of the driving shaft is rotatably connected with the sliding rod, and the driving shaft and a part of the sliding rod are received on the finger rod Inside the section, the slider extends beyond the end of the finger stem.
- the connecting portion of the test portion is interference-fitted, snap-fitted or magnetically connected to the projection.
- the driving shaft can be driven by the sliding rod by pulling or pushing the sliding rod, and the crank is driven by the driving shaft, and the test portion on the protruding portion is driven by the crank to rotate.
- the direction of the test department was changed. Also for the purpose of cleaning, the advantages of the connection structure and the two types of connection structures are not described herein.
- the free end of the slider can also be threadedly engaged with the free end of the finger stem.
- the use of a threaded fit to control the sliding of the slider allows for a smoother sliding of the slider, so that the movement of the slider through the drive shaft to drive the crank is easier to control.
- test finger provided by the utility model solves the problem that in the prior art, in the case of space limitation, the caliper cannot accurately measure the distance from the tip end portion of the finger bar to the charging member or the charging wire, and the utility model has the advantages of convenient use and structure. Single. Using this test finger, it is very easy and accurate to determine whether the distance from the tip end of the finger bar to the live part or the live wire meets safety standards.
- Figure 1 (a) is an assembled view of a test finger according to a first embodiment of the present invention
- Figure 1 (b) is an exploded view of the test finger according to the first embodiment of the present invention
- Figure 1 (c) 2 is a cross-sectional view of a test finger according to a first embodiment of the present invention
- FIG. 2(a) is an assembled view of a test finger according to a second embodiment of the present invention
- FIG. 3 (a) is a third embodiment according to the present invention
- Example of the test refers to the assembled view
- FIG. 3 (b) is a test pointing without the test portion installed according to the third embodiment of the present invention
- Figure 1 (c) 2 is a cross-sectional view of a test finger according to a first embodiment of the present invention
- FIG. 2(a) is an assembled view of a test finger according to
- Fig. 3 (c) is a view of a test portion and its associated structure according to a third embodiment of the present invention. Description of the reference numerals
- the test finger 1 provided by the present invention includes a finger-shaped stem portion 2 to which a test portion is connected at the tip end portion 3 of the finger-shaped stem portion 2.
- the test portion is in two parts, one part is the connecting portion 7, which is connected to the tip end portion 3 of the finger shank, and the other portion is the calibration value portion 6, which is used to measure the tip end portion of the test finger and the uninsulated charging portion. The distance between the component or the live conductor.
- the finger lever 2 functions in the same manner as the finger-shaped lever of the prior art.
- the tip end portion 3 of the finger lever 2 abuts against the housing of the electrical device, and the test portion directly faces the finger lever.
- Department 2 The distance between the tip portion 3 and the uninsulated live parts or live conductors is tested.
- the length of the test portion can be preset, and the length of the selected test portion is the length of the required minimum safety distance. If the free end of the test portion can be in contact with the charged body (ie, the uninsulated live parts or the live conductor), It indicates that the distance is less than or equal to the minimum safety distance. Conversely, if the free end is not accessible to the charged body, the distance is greater than the minimum safety distance, and when the distance is greater than or equal to the minimum safety distance, the safety setting standard is met.
- the test portion is a set of test heads having different nominal length values that are replaceable for use on the tip end portion 3 of the finger lever 2. Because the requirements for safety distance are different at different voltage levels, the test heads are made to have different calibration length values, and can be replaced when used, so that the test can be performed under different voltage levels.
- the tip end portion 3 of the finger rod portion 2 is provided with a partial spherical groove 15, and a magnet 4 is fixedly disposed at the bottom of the partial spherical groove 15, and the connecting ball 5 made of ferromagnetic material is accommodated.
- the connecting ball 5 is in contact with the magnet 4, and the connecting ball 5 is connected to the partial spherical groove 15 by the magnetism of the magnet 4, and the connecting ball 5 is provided with a hole 16 for the hole In cooperation with the connecting portion 7 of the test portion, the connecting portion 7 of the test portion is inserted in the hole 16.
- connection portion 7 of the test portion may be further made of a material containing a magnet, such that the connection portion 7 and the connecting ball 5 are The magnetic attraction between the test portions is stably connected to the tip end portion 3.
- the connecting portion 7 of the test portion may be further interference-fitted or snapped with the hole 16 in the connecting ball 5.
- test portion Since the test portion is attached to the connecting ball 5, the connecting ball 5 and the partial spherical recess 15 are magnetically connected, and the connecting ball 5 can be freely rotated within the partial spherical recess 15 in the tip end portion 3 of the finger-shaped stem portion 2, thus inserting
- the test portion in the hole 16 in the connecting ball 5 is also free to swing within a certain angle due to the free rotation of the connecting ball 5.
- the direction of the test section can be freely varied, increasing the flexibility of use of the test finger. This change in angle is generally adjusted before the test finger is used.
- the direction of the test portion is usually not adjustable during the use of the test finger.
- connection between the test portion and the tip end portion 3 of the finger lever portion 2 is a detachable insertion connection, which facilitates replacement of the test portion.
- a groove 17 is provided in the middle of the tip end portion 3 of the finger-shaped stem portion 2, and the groove 17 extends to the outer edge of the finger-shaped stem portion 3, that is, the groove 17 is a through groove is formed at the bottom of the groove 17 by a cylindrical groove 18 having a diameter larger than a width of the groove 17, and a tip portion 3 of the finger portion 2 is provided with a partial spherical groove 15, the portion
- the spherical groove 15 is larger than a half-spherical shape for receiving the connecting ball 8 therein, and since it is larger than a half-spherical shape, the connecting ball 8 does not fall off from the partial spherical groove 15.
- the connecting ball 8 can be pushed in and latched in more than a half sphere.
- the portion of the spherical recess 15 is free to rotate while the connecting ball 8 does not come out of the tip end portion of the finger portion.
- the diameter of the connecting ball 8 is slightly larger than the diameter of the spherical recess 15, so that the connecting ball 8 can be more firmly fixed in the spherical recess 15.
- the connecting ball 8 is also provided with a hole 16 for engaging with the connecting portion 7 of the test portion, and the connecting portion 7 of the test portion is inserted in the hole 16.
- the connecting portion 7 of the test portion and the connecting ball 8 may be further made of a material containing a magnet and a ferromagnetic material, respectively, so that the connecting portion 7 and the connecting ball 8 may be A magnetic connection is achieved.
- the connecting portion 7 of the test portion may be further interference-fitted or snap-fitted with the hole 16 on the connecting ball 8.
- the test finger 1 shown in Fig. 3 (a) is obtained by fitting the test portion shown in Fig. 3 (c) and its associated portion to the finger-shaped stem portion 2 shown in Fig. 3 (b). .
- the finger lever portion 2 is hollow, and the circular crank 10 is rotatably coupled to the tip end portion 3 of the finger lever portion 2, and a bayonet 13 is disposed in the middle of the circular crank.
- the bayonet pins 13 Cooperating with the pin holes 14 provided on the tip end portion 3, the bayonet pins 13 are disposed on the front and back sides of the crank 10, and two pin holes 14 are correspondingly provided at the tip end portions, and the cooperation of the bayonet pins 13 and the pin holes 14 makes the crank 10 is rotated about the radial axis of the tip end portion 3 of the finger shank 2, i.e., the crank 10 is rotated about the axis formed by the bayonet 13 on the front and rear sides thereof.
- a projection 9 is provided which cooperates with the test portion.
- the connecting portion 7 of the test portion is sleeved on the projection 9, and the crank 10 is connected to one end of the drive shaft 11, and the drive shaft 11 is connected.
- the other end is rotatably coupled to the slide bar 12, and the movement of the slide bar 12 drives the crank 10 to rotate by the movement of the drive shaft 11, thereby changing the direction of the test portion.
- a portion of the drive shaft 11 and the slide bar 12 are housed inside the finger lever portion 2, and the slide bar 12 extends beyond the end portion of the finger lever portion 2. This configuration allows the overall volume of the test finger to be reduced, and the user can come into contact with the end of the slider 12 extending beyond the finger portion 12, which facilitates the operation of the slider 12 to effectively control the direction of the test portion.
- This configuration makes it possible to change the direction of the test head even during use, and the flexibility of the use of the test fingers is further improved compared to the first embodiment and the second embodiment.
- the connecting portion 7 of the test portion may be further magnetically coupled to the projecting portion 9.
- the connecting portion 7 of the test portion may be further interference-fitted or engaged with the projecting portion 9.
- the free end of the slider 12 can also be threadedly engaged with the free end of the finger stem.
- the use of a threaded fit to control the sliding of the slider 12 allows the slider 12 to slide more smoothly, so that the movement of the slider 10 by the slider 12 is easier to control.
- test proposed by the present invention is generally used in an electrical device, but can be used in other situations where there is a corresponding need, and the description of the specific embodiments herein is merely illustrative and not limiting. This combination or substitution.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Measuring Leads Or Probes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Finger-Pressure Massage (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015500763A JP2015515615A (ja) | 2012-03-23 | 2013-03-22 | テストフィンガー |
US14/386,921 US20150061716A1 (en) | 2012-03-23 | 2013-03-22 | Testing finger |
EP13764685.7A EP2827096A4 (en) | 2012-03-23 | 2013-03-22 | FINGER |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201220113817.6 | 2012-03-23 | ||
CN2012201138176U CN202522177U (zh) | 2012-03-23 | 2012-03-23 | 测试指 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2013139296A1 true WO2013139296A1 (zh) | 2013-09-26 |
Family
ID=47105122
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/073035 WO2013139296A1 (zh) | 2012-03-23 | 2013-03-22 | 测试指 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20150061716A1 (zh) |
EP (1) | EP2827096A4 (zh) |
JP (1) | JP2015515615A (zh) |
CN (1) | CN202522177U (zh) |
WO (1) | WO2013139296A1 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202522177U (zh) * | 2012-03-23 | 2012-11-07 | 施耐德东芝换流器欧洲公司 | 测试指 |
DE102015212565A1 (de) * | 2015-07-06 | 2017-01-12 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zur reversiblen Kontaktierung |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5471759A (en) * | 1994-08-19 | 1995-12-05 | A&E Manufacturing Co., Inc. | Spark plug gauge with gap adjuster |
FR2810107A1 (fr) * | 2000-06-13 | 2001-12-14 | Jean Marc Rene Mauric Girardin | Calibre pour la verification de distances de securite |
CN201327361Y (zh) * | 2008-12-16 | 2009-10-14 | 河南省电力公司商丘供电公司 | 一种绝缘测距杆 |
CN102042791A (zh) * | 2010-10-27 | 2011-05-04 | 河南省电力公司商丘供电公司 | 10kV设备安全距离测量尺 |
CN202522177U (zh) * | 2012-03-23 | 2012-11-07 | 施耐德东芝换流器欧洲公司 | 测试指 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE445335A (zh) * | ||||
US1553814A (en) * | 1921-07-15 | 1925-09-15 | Sinius M Hansen | Centering and surfacing tool |
US3180030A (en) * | 1961-02-23 | 1965-04-27 | Bendix Corp | Gage probe |
JPH0430402U (zh) * | 1990-07-06 | 1992-03-11 | ||
US5199180A (en) * | 1992-05-01 | 1993-04-06 | Yablonsky Jack E | Machine guard safety gauge/Guardchek ™ |
JP3738800B2 (ja) * | 1997-12-18 | 2006-01-25 | ソニー株式会社 | 高さ測定装置及びその使用方法 |
GB0114360D0 (en) * | 2001-06-13 | 2001-08-08 | Renishaw Plc | Stylus orientation |
JP3735546B2 (ja) * | 2001-08-21 | 2006-01-18 | 株式会社ミツトヨ | 内側マイクロメータ |
JP2012018373A (ja) * | 2010-06-08 | 2012-01-26 | Ricoh Co Ltd | 増設ファンユニット及び画像形成装置 |
-
2012
- 2012-03-23 CN CN2012201138176U patent/CN202522177U/zh not_active Expired - Fee Related
-
2013
- 2013-03-22 JP JP2015500763A patent/JP2015515615A/ja not_active Ceased
- 2013-03-22 US US14/386,921 patent/US20150061716A1/en not_active Abandoned
- 2013-03-22 WO PCT/CN2013/073035 patent/WO2013139296A1/zh active Application Filing
- 2013-03-22 EP EP13764685.7A patent/EP2827096A4/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5471759A (en) * | 1994-08-19 | 1995-12-05 | A&E Manufacturing Co., Inc. | Spark plug gauge with gap adjuster |
FR2810107A1 (fr) * | 2000-06-13 | 2001-12-14 | Jean Marc Rene Mauric Girardin | Calibre pour la verification de distances de securite |
CN201327361Y (zh) * | 2008-12-16 | 2009-10-14 | 河南省电力公司商丘供电公司 | 一种绝缘测距杆 |
CN102042791A (zh) * | 2010-10-27 | 2011-05-04 | 河南省电力公司商丘供电公司 | 10kV设备安全距离测量尺 |
CN202522177U (zh) * | 2012-03-23 | 2012-11-07 | 施耐德东芝换流器欧洲公司 | 测试指 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2827096A4 * |
Also Published As
Publication number | Publication date |
---|---|
CN202522177U (zh) | 2012-11-07 |
EP2827096A1 (en) | 2015-01-21 |
US20150061716A1 (en) | 2015-03-05 |
JP2015515615A (ja) | 2015-05-28 |
EP2827096A4 (en) | 2015-06-10 |
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