CN101672864A - Multi-functional measurement instrument with safety protection device - Google Patents
Multi-functional measurement instrument with safety protection device Download PDFInfo
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- CN101672864A CN101672864A CN200910041672A CN200910041672A CN101672864A CN 101672864 A CN101672864 A CN 101672864A CN 200910041672 A CN200910041672 A CN 200910041672A CN 200910041672 A CN200910041672 A CN 200910041672A CN 101672864 A CN101672864 A CN 101672864A
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Abstract
The invention discloses a multi-functional instrument with a safety protection device, which comprises an upper casing, a lower casing and an instrument main body, wherein the upper casing and the lower casing are mutually clamped and connected to form a cavity body with a front opening and a back opening, the instrument main body is installed in the cavity body, and a multimeter input interface and a network line input interface are arranged on the instrument main body. The multi-functional instrument also comprises a safety protection device which is installed on the instrument main body ina removable way and is provided with two installation positions. When the safety protection device is positioned at a first installation position, the multimeter input interface is communicated with the outside, and the network line input interface is blocked; when the safety protection device is positioned at a second installation position, the network line input interface is communicated with the outside, and the multimeter input interface is blocked. The multi-functional measurement instrument with the safety protection device conforms to the relevant safety certification standard, preventspotential safety hazard existing in the use process effectively, prolongs the service life of the multi-functional instrument and enhances the use safety.
Description
Technical field
The present invention relates to a kind of multi-functional measurement instrument, relate more specifically to a kind of multi-functional measurement instrument with safety guard.
Background technology
The ordinary numbers multimeter also claims digital multimeter, is the indispensable instrument that vast electronic technology personnel and electrophile are engaged in electronic surveying and maintenance job.The ordinary numbers multimeter has desk-top digital multimeter and portable digital multimeter.Portable (also claiming hand-held) digital multimeter is low with its perfect in shape and function, highly versatile, price, power consumptive province, remarkable advantage such as be easy to carry, and is subjected to users' favor deeply.
The ordinary numbers multimeter is meant the function that adopts discrete circuit to realize multimeter, and the function that it can be realized has: measure combined-voltage, measure ac and dc current and measuring resistance.Some common multimeter also can measuring diode and the enlargement factor of triode.Ordinary numbers multimeter internal circuit mainly comprises: dc digital voltmeter, AC-DC change-over circuit, current-voltage conversion circuit, resistance-voltage conversion circuit, power-supplying circuit and display driver circuit.The basic functional principle of ordinary numbers multimeter is that the signal that detects inserts multimeter through the test pencil of multimeter, signal carries out capacitance-resistance filter and preposition amplification, multimeter carries out corresponding conversion of signals, again analog signal conversion is become digital signal according to the corresponding gear that the user selects then, at last numerical value is exported on display screen through display driver circuit.
Along with constantly popularizing of network, test simple in structure network cable tester is fast also arisen at the historic moment, because it is one of essential tool of maintainability test computer network.Common network cable tester can lead directly to the test of line, the test of cross hatch line, the test of netting twine line preface, test of wire break phenomenon or the like to netting twine, for whether maintainability test computer network and netting twine damage the band that provides strong help, therefore be subjected to users' favor deeply.
By foregoing description as can be known, the continuous increase of the frequency of utilization of digital multimeter and network cable tester and both structures are all fairly simple, therefore a lot of manufacturers unite two into one them and make a kind of multi-functional measurement instrument that has digital multimeter and network cable tester function simultaneously, avoid the staff at ordinary times because of lacking band or leaking the inconvenience that the band instrument produces like this, greatly facilitated staff's maintenance and test job at ordinary times.
In order to guarantee the safe in utilization and serviceable life of multifunction instrument, various safety standards have been formulated.Wherein, the IEC61010-1 standard code electrical equipment gap and the creepage distance of electronic instrument.In order to satisfy this standard, can cause the volume of multifunction instrument to increase usually, not portable.In addition, the various interface of existing multi-functional measurement instrument all is exposed to outside the multi-functional measurement instrument housing usually, along with causing electric clearance and creepage distance between each conductor of described multi-functional measurement instrument easily, the variation of the growth of described multi-functional measurement instrument service time and external environment changes like this, especially the test pencil jack of multimeter and near the netting twine interface standoff distance it are very near, thereby if they between electric clearance and creepage distance change may make between device or between device and the ground sparking may damage instrument and threaten personal safety, thereby have potential safety hazard.For example, because multifunction instrument has the function of measuring voltage usually, when it measures high pressure,,, very easily human body is worked the mischief if human body touches this interface because near the metal of the netting twine interface it is partly exposed outside.
Therefore, be necessary to provide a kind of improved multi-functional measurement instrument to overcome above-mentioned defective.
Summary of the invention
The purpose of this invention is to provide a kind of multi-functional measurement instrument with safety guard, described multi-functional measurement instrument meets the associated safety Valuation Standard, volume is little, safe to use and simple to operate.
For achieving the above object, the invention provides a kind of multi-functional measurement instrument with safety guard, comprise: upper shell, lower house and meter body, the cavity of opening before and after the mutual clamping of described upper shell and described lower house forms and has, described meter body is installed in the described cavity, described meter body is provided with multimeter input interface and netting twine input interface, corresponding described multimeter input interface offers through hole on the described upper shell, described netting twine input interface is positioned at the opposite end of described meter body and over against described opening, wherein, described multifunction instrument also comprises a safety guard, described safety guard is removably installed on the described meter body, described safety guard has two installation sites, when it is positioned at first installation site, described multimeter input interface and external communications, described netting twine input interface is blocked by described safety guard; When it is positioned at second installation site, described netting twine input interface and external communications, described multimeter input access port is blocked by described safety guard.
Preferably; described safety guard comprises first end face, second end face and connects the tail end of described first end face and second end face; described first end face is provided with jack; described tail end offers a netting twine opening, and described safety guard is installed on the described meter body by described first end face and described second end face.
Preferably, the side that described first end face is relative with second end face is provided with some projectioies, and correspondence is provided with some installation grooves on described meter body and the described upper shell.Described projection is inserted in the corresponding described installation groove so that described safety guard is socketed on the described meter body smoothly and firmly.
In an embodiment of multifunction instrument of the present invention, described meter body comprises first main body and second main body of mutual clamping, and described netting twine input interface lays respectively on described first main body and described second main body.
Preferably, also be provided with the cable input interface on described second main body, described cable input interface is located at an end relative with described safety guard and is positioned at a side of a described netting twine access port.。
Preferably, described meter body is provided with the LCDs that is used to show measurement result, and correspondingly described upper shell is provided with the window of showing described LCDs.Described LCDs can show the various measurement results of described multi-functional measurement instrument in time.
Correspondingly; the present invention also provides a kind of safety guard that is used for multifunction instrument; comprise: first end face, second end face and connect the tail end of described first end face and second end face; offer a plurality of jacks that intert for test pencil on described first end face, offer a netting twine opening on the described tail end.
Compared with prior art, described safety guard of the present invention has two installation sites, when it is positioned at first installation site, and described multimeter input interface and external communications, described netting twine input port is blocked by described safety guard; When it is positioned at second installation site, described netting twine input interface and external communications, described multimeter input access port is blocked by described safety guard.Like this when using a kind of function of described multi-functional measurement instrument; the corresponding input interface of another function is hidden by described safety guard; thereby the input interface of having isolated two kinds of functions effectively; and electric clearance and creepage distance between the input interface of two kinds of functions have been increased; therefore can guarantee that electric clearance and creepage distance between the input interface of two kinds of functions meet the standard of associated safety authentication, thereby can effectively prolong the serviceable life of described multifunction instrument and improve the security of using.
By following description also in conjunction with the accompanying drawings, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.
Description of drawings
Fig. 1 has the perspective view of an embodiment of the multi-functional measurement instrument of safety guard for the present invention.
Fig. 2 is the side view of multi-functional measurement instrument shown in Figure 1.
Fig. 3 is the vertical view of multi-functional measurement instrument shown in Figure 1.
Fig. 4 is the three-dimensional exploded view of multi-functional measurement instrument shown in Figure 1.
Fig. 5 is the stereographic map of the safety guard of multi-functional measurement instrument shown in Figure 4.
Fig. 6 is the stereographic map of another angle of safety guard of multi-functional measurement instrument shown in Figure 4.
Embodiment
With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above; the invention provides a kind of multi-functional measurement instrument with safety guard; described multi-functional measurement instrument meets the associated safety Valuation Standard and can effectively reduce the potential safety hazard that may exist in the use, prolongs the serviceable life of described multifunction instrument and has improved the security of using.
Fig. 1-4 has showed that the present invention has an embodiment of the multifunction instrument of safety guard, and this multifunction instrument comprises: upper shell 100, lower house 200, meter body 600 and safety guard 500.Described upper shell 100 forms the cavity with front and back opening with described lower house 200 mutual clampings; Described meter body 600 is fixedly installed in the described cavity; Described safety guard 500 is socketed on an end of described meter body.
With reference to figure 4, the described meter body 600 of present embodiment comprises first main body 300 and second main body 400.Described first main body 300 is provided with LCDs 310, backlight control key 321, feeler switch 322, a plurality of function selecting button 340, gear axle 411, multimeter input interface 331 and netting twine input interface 332b.Described backlight control key 321 and feeler switch 322 are arranged at the both sides of described first main body 300; Multimeter input interface 331 and described netting twine interface 332b are arranged at the tail end of described first main part 300; Gear axle 411 is arranged at described first main body 300 middle parts, and a gear knob 410 is installed on it, and described gear axle 411 can be selected corresponding shift function with described gear knob 410 rotations.Described second main body 400 is provided with cable input interface 350, netting twine input interface 332a, mounting box 430, groove (figure does not show) and mounting hole 420 is installed.Described mounting box 430 is located on described second main body 400 end (front end of described second main body 400) relative with described safety guard 500; Described cable input interface 350 and described netting twine input interface 332a are located in the described mounting box 430 side by side; Described mounting hole 420 is arranged at the tail end of described second main part 400 and holds multimeter input interface 331 and netting twine input interface 332b on described first main part 300; Described installation groove (figure does not show) is formed at the bottom surface of described second main body 400; Battery releasably is installed in the battery case 440 at middle part of described second main body 400, is described multifunction instrument power supply.Correspondence is provided with several projections and groove (figure does not show) on described first main body, 300 belows and described second main body, and it cooperatively interacts with described first main body 300 of more firm connection and second main body 400.Described LCDs 310 is located at an end of described meter body 300, described backlight control key 321, feeler switch 322, a plurality of function selecting button 340, gear axle 411, cable input interface 350, multimeter input interface 331 and netting twine input interface 332a and 332b are electrically connected with described LCDs 310 respectively, and the various measurement results after the processing show to make things convenient for the staff to check by described LCDs 310.Yi Zhi, described meter body 600 is provided with the corresponding circuit of each function with multifunction instrument, and this circuit is well known to those of ordinary skill in the art, no longer is described in detail at this.
Again with reference to figure 3 and Fig. 4, described upper shell 100 forms cavity with described lower house 200 mutual clampings particularly.Described upper shell 100 is provided with window 110, described window hold and fixing described instrument first main part 300 on LCDs 310; Be provided with breach 120 in described upper shell 100 rear and front ends; Stop on 100 at described first shell and to be formed with a plurality of through holes that hold corresponding component on described first main part 300.Described particularly through hole comprises a plurality of function key through holes 121, backlight control key through hole 122, feeler switch through hole 123 and a plurality of through hole 124 of inserting.Described gear knob 410 is installed on the described upper shell 100, on described upper shell 100, form gear dish 130 around described gear knob 410, graticule on the described gear dish 130 is corresponding to corresponding gear tie point (figure does not show) on described first main body 300, and the corresponding graticule on the described gear dish 130 of described gear knob 410 alignings of rotation then can select to carry out the measuring operation of corresponding function.The rear and front end of described lower house 200 forms breach 210, described breach 210 is corresponding with the breach 120 of described upper shell 100 rear and front ends, when described upper shell 100 forms described cavity with described lower house 200 mutual clampings, described breach 210 and 120 correspondingly forms the opening of described cavity rear and front end, netting twine input interface 332a and 332b and the described cable input interface 350 of the opening of described cavity to hold described meter body measured to make things convenient for described cable and netting twine to insert in the corresponding input interface; Portable plate 220 releasably is arranged at the centre of described lower house 200, in use can open described portable plate 220 and be multi-functional measurement instrument loading and unloading battery of the present invention.
With reference to figure 5 and Fig. 6, safety guard 500 of the present invention comprises first end face 510, second end face 520 and connects the tail end 530 of described first end face 510 and second end face 520.Be formed with a plurality of and described multimeter input interface 331 corresponding jacks 511 on described first end face 510, described first end face 510 and second end face, 520 relative sides are provided with some protruding 540, are formed with the corresponding netting twine opening 531 of netting twine input interface 332b on first main part 300 with described meter body on the described tail end 530.
Described second main part 400 bottoms are provided with installs groove (figure does not show), and the bottom indent of correspondingly described upper shell 100 forms identical installation groove 150.Described installation groove holds the respective bump 540 of described safety guard 500 and makes described safety guard 500 be socketed on described meter body.Because each described installation groove shapes structure is identical; each described protruding 540 shape structure is also identical simultaneously; and described protruding 540 with the corresponding sleeve of described installation groove, therefore described safety guard 500 have two installation sites on demand tow sides be socketed on the described meter body.
The use of safety guard 500 of the present invention is described below with reference to Fig. 3 and Fig. 5.In carrying out measurement procedure, when using function of multimeter, described protective device 500 is socketed on an end of described meter body and the projection 540 on described first end face 510 is inserted in the following installation groove 150 of described upper shell 100, jack 511 on described first end face 510 connects a plurality of multimeter input interfaces of inserting on a through hole 124 and the described meter body 331 on the described upper shell 100, make described multimeter input interface 331 and external communications, thereby the interface end of described test pencil can be inserted in the described multimeter input interface 331 and be electrically connected with described meter body, and can normally use function of multimeter this moment; Simultaneously because in the installation groove 150 below the described upper shell 100 of projection 540 insertions on described first end face 510, make netting twine opening 531 and the netting twine input interface 332b on the described meter body on the described tail end 530 be positioned at the not homonymy of described multifunction instrument, just described tail end 530 has covered described netting twine input interface 332b, therefore, this moment, netting twine can not be inserted in the corresponding netting twine input interface, can not use the network cable tester function.When using the network cable tester function, described protective device 500 is socketed on an end of described meter body and projection 540 on described second end face 520 is inserted in the installation groove 150 below the described upper shell 100, this moment, the netting twine opening 531 on the described tail end 530 was connected with netting twine input interface 332b on described first main part 300, netting twine to be measured can pass described netting twine opening 531 and be electrically connected with described netting twine input interface 332b, thereby can normally use the function of network cable tester; Simultaneously, because in the installation groove 150 below the described upper shell 100 of projection 540 insertions on described second end face 520, thereby a plurality of multimeter input interfaces of inserting on a through hole 124 and described first main part 300 331 on the described upper shell 100 lay respectively at the two ends of described second end face 520, therefore described second end face 520 is kept apart the described through hole 124 of inserting with described multimeter input interface 331, the interface end of described test pencil can not be inserted in the described multimeter input interface 331 and be electrically connected with described meter body, and can not normally use function of multimeter this moment.
Described safety guard of the present invention has two installation sites, when it is positioned at first installation site, and described multimeter input interface 331 and external communications, described netting twine input port 332b is blocked by described safety guard 500; When it is positioned at second installation site, described netting twine input interface 332b and external communications, described multimeter input access port 331 is blocked by described safety guard 500.Like this when using a kind of function of described multi-functional measurement instrument; the corresponding input interface of another function is hidden by described safety guard 500; thereby the input interface of having isolated two kinds of functions effectively; and electric clearance and creepage distance between the input interface of two kinds of functions have been increased; therefore can guarantee the standard that electric clearance between the input interface of two kinds of functions and creepage distance meet the associated safety authentication; can effectively reduce the potential safety hazard that may exist in the use, prolong the serviceable life of described multifunction instrument and improved the security of using.
The concrete principle of work of multi-functional measurement instrument involved in the present invention and the concrete function of other element act as well known to those of ordinary skill in the art, no longer are described in detail at this.
Above invention has been described in conjunction with most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.
Claims (8)
1. multifunction instrument with safety guard, comprise: upper shell, lower house and meter body, the cavity of opening before and after the mutual clamping of described upper shell and described lower house forms and has, described meter body is installed in the described cavity, described meter body is provided with multimeter input interface and netting twine input interface, corresponding described multimeter input interface offers through hole on the described upper shell, described netting twine input interface is positioned at the opposite end of described meter body and over against described opening, it is characterized in that, described multifunction instrument also comprises a safety guard, described safety guard is removably installed on the described meter body, described safety guard has two installation sites, when it is positioned at first installation site, described multimeter input interface and external communications, described netting twine input interface is blocked by described safety guard; When it is positioned at second installation site, described netting twine input interface and external communications, described multimeter input access port is blocked by described safety guard.
2. the multifunction instrument with safety guard as claimed in claim 1; it is characterized in that; described safety guard comprises first end face, second end face and connects the tail end of described first end face and second end face; described first end face is provided with jack; described tail end offers a netting twine opening, and described safety guard is installed on the described meter body by described first end face and described second end face.
3. the multifunction instrument with safety guard as claimed in claim 2 is characterized in that, the side that described first end face is relative with second end face is provided with some projectioies, and correspondence is provided with some installation grooves on described meter body and the described upper shell.
4. as each described multifunction instrument of claim 1-3 with safety guard; it is characterized in that; described meter body comprises first main body and second main body of mutual clamping, and described netting twine input interface lays respectively on described first main body and described second main body.
5. the multifunction instrument with safety guard as claimed in claim 4; it is characterized in that; also be provided with the cable input interface on described second main body, described cable input interface is located at an end relative with described safety guard and is positioned at a side of a described netting twine access port.
6. as each described multifunction instrument of claim 1-3 with safety guard; it is characterized in that; described meter body is provided with the LCDs that is used to show measurement result, and correspondingly described upper shell is provided with the window of showing described LCDs.
7. safety guard that is used for multifunction instrument; comprise: first end face, second end face and connect the tail end of described first end face and second end face; offer a plurality of jacks that intert for test pencil on described first end face, offer a netting twine opening on the described tail end.
8. the safety guard that is used for multifunction instrument as claimed in claim 7 is characterized in that, the side that described first end face is relative with second end face is provided with some projectioies.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910041672A CN101672864A (en) | 2009-08-06 | 2009-08-06 | Multi-functional measurement instrument with safety protection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910041672A CN101672864A (en) | 2009-08-06 | 2009-08-06 | Multi-functional measurement instrument with safety protection device |
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| CN101672864A true CN101672864A (en) | 2010-03-17 |
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| CN200910041672A Pending CN101672864A (en) | 2009-08-06 | 2009-08-06 | Multi-functional measurement instrument with safety protection device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103837181A (en) * | 2013-08-30 | 2014-06-04 | 苏州众显电子科技有限公司 | Multifunctional instrument |
| CN104407228A (en) * | 2014-11-05 | 2015-03-11 | 贝兹维仪器(苏州)有限公司 | Portable mud resistivity test handheld device |
| CN106066466A (en) * | 2016-06-30 | 2016-11-02 | 海盐新跃电器有限公司 | A kind of electric energy field-checking is with built-in virtual load device |
| CN106546849A (en) * | 2015-09-16 | 2017-03-29 | 弗兰克公司 | For the electrical isolation of camera in test and survey tool |
| US10271020B2 (en) | 2014-10-24 | 2019-04-23 | Fluke Corporation | Imaging system employing fixed, modular mobile, and portable infrared cameras with ability to receive, communicate, and display data and images with proximity detection |
| CN110514887A (en) * | 2018-05-22 | 2019-11-29 | 日置电机株式会社 | Portable type measuring appliance |
| CN110763095A (en) * | 2019-10-22 | 2020-02-07 | 国网天津市电力公司电力科学研究院 | Portable external insulation creepage distance measuring tool |
| US10586319B2 (en) | 2015-10-23 | 2020-03-10 | Fluke Corporation | Imaging tool for vibration and/or misalignment analysis |
| US10602082B2 (en) | 2014-09-17 | 2020-03-24 | Fluke Corporation | Triggered operation and/or recording of test and measurement or imaging tools |
| CN111198349A (en) * | 2018-11-16 | 2020-05-26 | 瑞星科技股份有限公司 | Ammeter test rod and ammeter combination using same |
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- 2009-08-06 CN CN200910041672A patent/CN101672864A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837181A (en) * | 2013-08-30 | 2014-06-04 | 苏州众显电子科技有限公司 | Multifunctional instrument |
| US10602082B2 (en) | 2014-09-17 | 2020-03-24 | Fluke Corporation | Triggered operation and/or recording of test and measurement or imaging tools |
| US10271020B2 (en) | 2014-10-24 | 2019-04-23 | Fluke Corporation | Imaging system employing fixed, modular mobile, and portable infrared cameras with ability to receive, communicate, and display data and images with proximity detection |
| CN104407228A (en) * | 2014-11-05 | 2015-03-11 | 贝兹维仪器(苏州)有限公司 | Portable mud resistivity test handheld device |
| CN106546792B (en) * | 2015-09-16 | 2020-10-16 | 弗兰克公司 | System and method for placing imaging tools in test and measurement tools |
| CN106546849A (en) * | 2015-09-16 | 2017-03-29 | 弗兰克公司 | For the electrical isolation of camera in test and survey tool |
| CN106546792A (en) * | 2015-09-16 | 2017-03-29 | 弗兰克公司 | For imaging tool is placed on the system and method in test and survey tool |
| US10530977B2 (en) | 2015-09-16 | 2020-01-07 | Fluke Corporation | Systems and methods for placing an imaging tool in a test and measurement tool |
| US10586319B2 (en) | 2015-10-23 | 2020-03-10 | Fluke Corporation | Imaging tool for vibration and/or misalignment analysis |
| US11210776B2 (en) | 2015-10-23 | 2021-12-28 | Fluke Corporation | Imaging tool for vibration and/or misalignment analysis |
| CN106066466A (en) * | 2016-06-30 | 2016-11-02 | 海盐新跃电器有限公司 | A kind of electric energy field-checking is with built-in virtual load device |
| CN110514887A (en) * | 2018-05-22 | 2019-11-29 | 日置电机株式会社 | Portable type measuring appliance |
| CN111198349A (en) * | 2018-11-16 | 2020-05-26 | 瑞星科技股份有限公司 | Ammeter test rod and ammeter combination using same |
| CN110763095A (en) * | 2019-10-22 | 2020-02-07 | 国网天津市电力公司电力科学研究院 | Portable external insulation creepage distance measuring tool |
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Open date: 20100317 |