CN110618303A - Voltage measuring device and method capable of realizing single-hole and double-hole switching detection - Google Patents
Voltage measuring device and method capable of realizing single-hole and double-hole switching detection Download PDFInfo
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- CN110618303A CN110618303A CN201910868969.3A CN201910868969A CN110618303A CN 110618303 A CN110618303 A CN 110618303A CN 201910868969 A CN201910868969 A CN 201910868969A CN 110618303 A CN110618303 A CN 110618303A
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- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 13
- 230000001681 protective effect Effects 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
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- 238000011161 development Methods 0.000 description 1
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Classifications
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- 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
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- 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
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
- H01R13/506—Bases; Cases composed of different pieces assembled by snap action of the parts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/60—Means for supporting coupling part when not engaged
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
- H01R13/6691—Structural association with built-in electrical component with built-in electronic circuit with built-in signalling means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/717—Structural association with built-in electrical component with built-in light source
- H01R13/7175—Light emitting diodes (LEDs)
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/20—Connectors or connections adapted for particular applications for testing or measuring purposes
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Optics & Photonics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
The invention discloses a voltage measuring device capable of single-hole and double-hole switching detection, which comprises: the device comprises a shell, a signal prompt module arranged on the shell and a detection identification circuit arranged in the shell; an insulating protection seat is fixed at the front end of the shell, and a first plug and a second plug which are used for jacking the socket safety protection door and extending into the socket jack are arranged on the insulating protection seat; the signal prompting module is connected with the output end of the detection identification circuit, and a first antenna and a second antenna which are connected with the input end of the detection identification circuit are respectively fixed in the first plug and the second plug; and a plug telescopic mechanism for driving the second plug to extend and retract in the insulating protection seat is also arranged in the shell. The invention also discloses a method for switching the single-hole detection and the double-hole detection of the voltage measuring device. The safety protection door is reasonable and ingenious in design and convenient to detect, the safety protection door can be jacked open by the aid of the first plug and the second plug in a cooperative manner, and single-hole and double-hole detection states can be switched to meet more user requirements, so that the safety protection door is easy to popularize.
Description
Technical Field
The invention relates to the field of zero and live line detection, in particular to a voltage measuring device and method capable of realizing single-hole and double-hole switching detection.
Background
With the development of the electronic industry, the types of sockets tend to be diversified, wherein the zero-live wire connection of the two-hole socket is easy to be confused, and because the normal switch controls the live wire, if the connection is wrong, the switch is turned off and only the zero wire is cut off, and the live wire is still electrified, the electric shock accident is easy to cause; meanwhile, some electric appliances have requirements on the access of the zero line and the live line and cannot be reversely connected, if the connection is reversely connected, certain functions cannot be achieved, and even the electric appliances are damaged; therefore, the detection of the national standard two-hole socket is often needed before the socket is installed and important electric devices are used and during maintenance operation.
At present, devices capable of detecting voltage in a non-contact mode are single-plug, after the new 3C forced certification is issued, new national standard sockets are provided with safety protection doors, and for safety, the safety protection doors in two holes are required to be simultaneously applied with force to open the safety protection doors in use; therefore, the voltage measuring device with a single plug on the market cannot be inserted into the jack of a new national standard socket, an effective voltage signal is difficult to detect, a special tool is needed, and the voltage can be detected only by opening the safety protection door of the socket, so that the process is complicated, and time and labor are wasted;
in addition, when the socket is detected by using the voltage measuring device, the existing single-plug voltage measuring device is used, the existing single-plug voltage measuring device needs to be inserted into the jacks of the socket in turn, the states of zero and live line induction signals of two holes of the socket are respectively tested, and the zero and live lines of the socket are distinguished by artificially comparing the indication state effects; the detection efficiency is low, and when the single-plug voltage measuring device is applied to a new national standard socket, the safety protection door can be opened only by a special tool, so that the complexity of operation is further increased undoubtedly;
therefore, there is a need for a voltage measuring device suitable for both new and old national standard sockets.
Disclosure of Invention
In order to solve the problems, the invention discloses a voltage measuring device and a method for single-hole and double-hole switching detection.
The technical scheme adopted by the invention for realizing the purpose is as follows:
a voltage measuring device capable of single-hole and double-hole switching detection comprises: the device comprises a shell, a signal prompt module arranged on the shell and a detection identification circuit arranged in the shell; an insulation protection seat is fixed at the front end of the shell, and a first plug and a second plug which are used for jacking the socket safety protection door and extending into the socket jack are arranged on the insulation protection seat; the signal prompting module is connected with the output end of the detection identification circuit, and a first antenna and a second antenna which are connected with the input end of the detection identification circuit are respectively fixed in the first plug and the second plug; and a plug telescopic mechanism for driving the second plug to extend and retract in the insulating protection seat is also arranged in the shell.
And the insulating protection seat is provided with a plug guide hole, and the second plug is inserted into the plug guide hole.
The plug telescopic mechanism comprises a power-assisted plate and a sliding guide groove which is arranged on the inner wall of the shell and corresponds to the plug guide hole, and the power-assisted plate is movably arranged in the sliding guide groove; the second plug is fixedly connected with the power assisting plate.
A telescopic guide groove is formed in the inner wall surface and the outer wall surface of the shell corresponding to the sliding guide groove, and a sliding block is movably arranged in the telescopic guide groove; the boosting plate is vertically provided with a first limiting block and a second limiting block, a connecting plate is movably arranged between the first limiting block and the second limiting block, and the sliding block is fixedly connected with the connecting plate.
The upper end of the sliding guide groove extends to form an ejection positioning groove; the right end of the ejection positioning groove is provided with an anti-deviation groove, and an anti-deviation lug is fixed on the sliding block corresponding to the anti-deviation groove.
A spring baffle is arranged on the inner wall of the insulation protection seat corresponding to the first limiting block; and the spring baffle is fixedly connected with a compression spring which is fixedly connected with the first limiting block.
The detection identification circuit comprises a signal conversion unit and a micro control unit which are connected in sequence; the signal conversion unit comprises a first analog-to-digital converter and a second analog-to-digital converter, wherein the first analog-to-digital converter and the second analog-to-digital converter are respectively connected to a first signal input end and a second signal input end of the micro control unit; the first antenna and the second antenna are respectively connected to the input ends of the first analog-to-digital converter and the second analog-to-digital converter.
A child protection cover is sleeved on the insulation protection seat corresponding to the first plug and the second plug; the tail end of the insulating protection seat is provided with a convex ring, and the tail end of the child protection cover is provided with a plurality of buckles which are tightly matched with the convex ring; and deformation preformed grooves are arranged on the child protection cover corresponding to the two sides of the buckle.
The child protection cover is also provided with a plugging assisting block which is perpendicular to the plugging direction of the child protection cover.
A method for switching single-hole detection and double-hole detection of a voltage measuring device comprises the following steps:
when the double-hole detection state is switched, the sliding block moves to the position below the ejection positioning groove in the sliding guide groove, so that the second plug extends out of the insulation protection seat from the plug guide hole;
the slide block moves up to the ejection positioning groove, and the compression spring drives the anti-deviation lug of the slide block to be clamped into the anti-deviation groove;
when the single-hole detection state is switched, the sliding block moves leftwards in the ejection positioning groove, so that the deviation-preventing convex block is separated from the deviation-preventing groove;
the sliding block moves downwards to the sliding guide groove, the compression spring pushes the sliding block to move rightwards to reset, and the second plug is driven to retract into the insulating protection seat along the plug guide hole.
The invention has the beneficial effects that: the invention has reasonable and ingenious design and convenient detection, and can jack the safety protection door through the first plug and the second plug in a cooperative manner, so that the first antenna can be closer to a charged body in the socket, and the measurement accuracy is ensured; through the arrangement of the second antenna, the measurement data of the live wire end and the zero line end of the socket can be simultaneously detected by matching with the first antenna, so that the detection efficiency is improved; the single-hole and double-hole detection states can be switched to meet more user requirements, and the method is easy to popularize; moreover, through the setting of children's protective cover, can protect first antenna, second antenna effectively, increase of service life also provides the helping hand for promoting the product to popularize to the family.
The invention is further described with reference to the following detailed description and accompanying drawings.
Drawings
FIG. 1 is a front view of a voltage measuring device capable of single and double hole switching detection in an embodiment of the present invention;
FIG. 2 is a schematic view of a child protection cover and an insulating protection seat according to an embodiment of the present invention;
FIG. 3 is an exploded view of the housing and plug retraction mechanism in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a housing and a plug retracting mechanism according to an embodiment of the present invention;
FIG. 5 is a circuit diagram of a detection identification circuit in an embodiment of the present invention;
fig. 6 is a diagram illustrating a state of the voltage measuring device capable of performing single-hole and dual-hole switching detection according to an embodiment of the present invention when the voltage measuring device is used for detecting a socket.
Detailed Description
In an embodiment, referring to fig. 1 to fig. 6, the voltage measuring device capable of single-hole and dual-hole switching detection provided in this embodiment includes: the device comprises a shell 1, a signal prompt module arranged on the shell 1 and a detection identification circuit arranged in the shell 1; an insulating protection seat 2 is fixed at the front end of the shell 1, and a first plug 21 and a second plug 22 which are used for jacking the socket safety protection door 61 and extending into a socket jack are arranged on the insulating protection seat 2; the signal prompt module is connected with the output end of the detection identification circuit, and a first antenna and a second antenna which are connected with the input end of the detection identification circuit are respectively fixed in the first plug 21 and the second plug 22; a plug telescoping mechanism 3 for driving the second plug 22 to extend and retract in the insulating protection seat 2 is further arranged in the shell 1.
Specifically, when detecting a socket equipped with a safety protection door 61 in a new national standard, the second plug 22 is driven to extend out of the insulation protection seat 2 through the plug telescopic mechanism 3; when detecting that the old national standard has no socket of the safety protection door 61, the plug-in detection can be kept in a double-plug state, and the second plug 22 can be driven to retract into the insulation protection seat 2 through the plug telescopic mechanism 3 to be switched to a single-plug state; therefore, the device can be simultaneously suitable for the sockets of the new and old national standards.
In addition, the first plug 21 and the second plug 22 are mutually independent, and the second plug 22 is arranged according to the opening principle of the safety protection door 61, so that the safety protection door 61 can be jacked open by the cooperation of the first plug 21 and the second plug 22 during detection, the first antenna can be closer to the charged body 62 in the socket, the measurement accuracy is ensured, other tools outside the device are not needed, and the detection process for the new national standard socket is simple and convenient, time-saving and labor-saving; can meet the use requirements of customers and is easy to popularize.
Moreover, through the arrangement of the second antenna, the measurement data of the live wire end and the zero line end of the socket can be simultaneously detected by matching with the first antenna, and firstly, when the socket is detected to be abnormal, the signals of the live wire end and the zero line end can be obtained only by carrying out measurement twice without a conventional voltage measuring device with only a single plug; secondly, by means of simultaneous measurement of the first antenna and the second antenna, even if a user carelessly takes care of, the device can not normally operate and can not feed back to the user through the signal prompting module when the device is not powered on or a power supply of the system fails; the socket can not be misled due to no feedback, such as open circuit of the socket, and the like, and the potential safety hazard is greatly reduced, so that the device can ensure that no misleading maintenance personnel can be ensured without configuring a self-checking function and the potential safety hazard problem of the conventional test pencil is solved compared with the conventional test pencil.
And this device once measures alright obtain the voltage signal of live wire end, zero line end, and is efficient to feedback through signal prompt module, the user obtains the measuring result according to the feedback, makes measuring process convenient and fast, labour saving and time saving.
A plug guide hole is formed in the insulating protection seat 2, and the second plug 22 is inserted into the plug guide hole. The arrangement of the plug guide hole ensures that the distance between the second plug 22 and the first plug 21 is unchanged after the second plug is extended out each time.
The plug telescoping mechanism 3 comprises a power assisting plate 31 and a sliding guide groove 11 which is arranged on the inner wall of the shell 1 corresponding to the plug guide hole, and the power assisting plate 31 is movably arranged in the sliding guide groove 11; the second plug 22 is fixedly connected to the power assisting plate 31. The second plug 22 is driven to move through the power assisting plate 31, firstly, the volume of the power assisting plate 31 is larger than that of the second plug 22, and the sliding stability is high; secondly, the function of protecting the second plug 22 is achieved, even if the plug telescoping mechanism 3 is damaged due to excessive use of the telescoping function, the second plug 22 and the second antenna fixed in the second plug 22 cannot be damaged, and the maintenance cost of the second antenna is higher than that of the plug telescoping mechanism 3, so that the maintenance cost can be effectively reduced.
A telescopic guide groove 12 is arranged corresponding to the sliding guide groove 11 and penetrating through the inner wall surface and the outer wall surface of the shell 1, and a sliding block 13 is movably arranged in the telescopic guide groove 12; the boosting plate 31 is vertically provided with a first limiting block 311 and a second limiting block 312, a connecting plate 32 is movably installed between the first limiting block 311 and the second limiting block 312, and the sliding block 13 is fixedly connected with the connecting plate 32.
The upper end of the sliding guide groove 11 extends to form an ejection positioning groove 14; the right end of the ejecting positioning groove 14 is provided with an anti-deviation groove 15, and an anti-deviation lug is fixed on the sliding block 13 corresponding to the anti-deviation groove 15.
Specifically, the setting of deviation prevention protruding block avoids slider 13 skew in ejecting constant head tank 14, or touches the foreign object carelessly and leads to slider 13 follow ejecting constant head tank 14 roll-off, is driven by compression spring's elasticity and moves right in sliding guide 11 and reset, has guaranteed the stability of using.
A spring baffle is arranged on the inner wall of the insulation protection seat 2 corresponding to the first limiting block 311; a compression spring 23 is fixedly connected to the spring baffle, and the compression spring 23 is fixedly connected to the first stopper 311.
The detection identification circuit comprises a signal conversion unit and a micro control unit 4 which are connected in sequence; the signal conversion unit comprises a first analog-to-digital converter and a second analog-to-digital converter, wherein the first analog-to-digital converter and the second analog-to-digital converter are respectively connected to a first signal input end and a second signal input end of the micro control unit 4; the first antenna and the second antenna are respectively connected to the input ends of the first analog-to-digital converter and the second analog-to-digital converter.
Specifically, the signal prompt module comprises a live wire state indicator lamp and a zero line state indicator lamp; the live wire state indicator light and the zero line state indicator light are fixed on the shell 1 and connected with the micro control unit 4. The live wire state indicator lamp comprises a first light emitting diode, and the zero line state indicator lamp comprises a second light emitting diode; the first light emitting diode and the second light emitting diode are respectively connected to a first output end and a second output end of the micro control unit 4.
The live wire state indicator lamp and the zero wire state indicator lamp respectively comprise a third light-emitting diode and a fourth light-emitting diode; the third light emitting diode and the fourth light emitting diode are respectively connected with a third output end and a fourth output end of the micro control unit 4; the first light emitting diode and the second light emitting diode are red light emitting diodes, and the third light emitting diode and the fourth light emitting diode are green light emitting diodes.
Therefore, through the arrangement of the first antenna and the second antenna, the left side jack and the right side jack of the socket can be measured at the same time, and through the arrangement of the first analog-to-digital converter and the second analog-to-digital converter, the live wire end measuring signal and the zero wire end measuring signal which are obtained through measurement of the first antenna and the second antenna can be simultaneously converted into digital signals and transmitted to the micro control unit 4, the process is not interfered with each other, and the accuracy of the measuring result can be ensured;
moreover, a reference threshold is preset in the micro control unit 4, when the first antenna measures that a voltage signal higher than the reference threshold exists, the micro control unit 4 judges that the first antenna measurement target is a live wire, controls the first light emitting diode to light, and then the live wire state indicator light lights red light;
when the second antenna measures that a voltage signal higher than the reference threshold exists, the micro control unit 4 judges that the second antenna measurement target is a live wire and controls the second light emitting diode to light, and then the zero line state indicator lamp lights red light;
maintenance personnel can further judge which end of the socket has dangerous voltage according to the states of the live wire state indicator lamp and the zero line state indicator lamp, and further determine whether the live wire is open-circuited, whether the zero line is open-circuited and whether the line wiring is abnormal.
In addition, the reference threshold is set according to the voltage standard of different national regions and is an accurate numerical value, in a preferred embodiment, a plurality of reference thresholds are preset, and before the measurement signal of the fire wire end and the measurement signal of the zero wire end which are converted by the analog-to-digital converter are obtained, a proper reference threshold is selected according to the national region where a worker is located; the setting principle of the reference threshold is as follows: the national standard socket is equivalent to an alternating power supply, an alternating electric field is formed around the national standard socket, and the antenna extends into the alternating electric field, so that corresponding alternating voltage can be induced; meanwhile, because factors such as environment and the like are interfered by other non-test target electric fields and the like, misleading signals are generated, but during testing, the antenna is inserted into the jack of the socket and protected by the shell of the socket, so that the interference signals can be reduced to the minimum, therefore, a reference threshold is set, when the test signals are smaller than the reference threshold, the test signals are regarded as the interference signals, and the signals are not transmitted to the next step, so that the subsequent judgment is not influenced; if the reference threshold is not set, the interference signal is allowed to continue to be transmitted, and then subsequent judgment is interfered, so that serious potential safety hazard is brought.
And there are three-hole sockets, etc., the double plug of this voltage measuring device is difficult to insert, therefore need set up the telescopic mechanism 3 of the plug as above, switch over into the single-hole detection state in order to adapt to more sockets of different specifications.
A child protection cover 5 is sleeved on the insulating protection seat 2 corresponding to the first plug 21 and the second plug 22; a convex ring 24 is arranged at the tail end of the insulating protection seat 2, and a plurality of buckles 51 which are tightly matched with the convex ring 24 are arranged at the tail end of the child protection cover 5; deformation preformed grooves 52 are formed in the child protecting cover 5 corresponding to the two sides of the buckle 51.
Specifically, the child protection cover 5 is arranged on the insulating protection seat 2 and is fixed by the convex ring 24 and the buckle 51 in a matching way when the device is not used, so that the first plug 21 and the second plug 22 can be prevented from being damaged when a child plays; since the first plug 21 and the second plug 22 need to be inserted into the insertion holes of the socket, the transverse thickness thereof is necessarily small, and the plugs are easily damaged in case of receiving a transverse external force;
in addition, the material deformability that children's protective cover 5 adopted is relatively weak, consequently has good protective properties, and the required effort of 5 plug processes of children's protective cover is slightly bigger, and the setting of deformation reservation groove 52 prevents firstly that the deformation that the plug formed from damaging children's protective cover 5, secondly reduces the required effort of plug protective cover.
Therefore, through the arrangement of the child protective cover 5, the first antenna and the second antenna can be effectively protected, the damage probability is reduced, the service life is prolonged, and the assistance is provided for promoting the product to be popularized to families.
The child protecting cover 5 is further provided with a plugging assisting block 53 perpendicular to the plugging direction of the child protecting cover 5.
Particularly, the arrangement of the plugging assisting block 53 provides a good stress point for plugging the child protecting cover 5, so that the child protecting cover 5 can be conveniently plugged.
A method for switching single-hole detection and double-hole detection of a voltage measuring device comprises the following steps:
when the double-hole detection state is switched, the sliding block 13 moves to the position below the ejection positioning groove 14 in the sliding guide groove 11, so that the second plug 22 extends out of the insulating protection seat 2 from the plug guide hole;
the slide block 13 moves upwards to the ejection positioning groove 14, and the compression spring 23 drives the anti-deviation lug of the slide block 13 to be clamped into the anti-deviation groove 15;
when the single-hole detection state is switched, the sliding block 13 moves left in the ejection positioning groove 14, so that the anti-deviation lug is separated from the anti-deviation groove 15;
the sliding block 13 moves downwards to the sliding guide groove 11, and the compression spring 23 pushes the sliding block 13 to move rightwards to reset, so as to drive the second plug 22 to retract into the insulating protection seat 2 along the plug guide hole.
When a socket with a safety protection plate is measured, the plug assisting block 53 applies force to separate the buckle 51 from the convex ring 24 and take out the child protection cover 5, the insulation protection seat 2 drives the first plug 21 and the second plug 22 to be respectively inserted into the left jack and the right jack of the socket, and the first plug 21 and the second plug 22 apply force together along a direction perpendicular to the safety protection door 61 to squeeze and open the safety protection door 61 and push the head ends of the first plug 21 and the second plug 22 to be respectively close to the live wire live body 62 and the zero wire live body 62 of the socket;
after the detection, insulating protection seat 2 orders about first plug 21, second plug 22 and extracts from the left and right jack of socket, and children's protective cover 5 corresponds first plug 21, second plug 22 cover on insulating protection seat 2, detains buckle 51 on bulge loop 24 through plug helping hand piece 53 application of force.
The invention has reasonable and ingenious design and convenient detection, and can jack the safety protection door 61 through the first plug 21 and the second plug 22 in a cooperative manner, so that the first antenna can be closer to the charged body 62 in the socket, and the measurement accuracy is ensured; through the arrangement of the second antenna, the measurement data of the live wire end and the zero line end of the socket can be simultaneously detected by matching with the first antenna, so that the detection efficiency is improved; the single-hole and double-hole detection states can be switched to meet more user requirements, and the method is easy to popularize; moreover, through the setting of children's protective cover 5, can protect first antenna, second antenna effectively, increase of service life also provides the helping hand for promoting the product to popularize to the family.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Those skilled in the art can make many possible variations and modifications to the invention using the above disclosed technical means and teachings, or can modify equivalent embodiments with equivalent variations, without departing from the scope of the invention. Therefore, all equivalent changes made according to the shape, structure and principle of the present invention without departing from the technical scheme of the present invention shall be covered by the protection scope of the present invention.
Claims (10)
1. A voltage measuring device capable of single-hole and double-hole switching detection is characterized by comprising: the device comprises a shell, a signal prompt module arranged on the shell and a detection identification circuit arranged in the shell;
an insulation protection seat is fixed at the front end of the shell, and a first plug and a second plug which are used for jacking the socket safety protection door and extending into the socket jack are arranged on the insulation protection seat;
the signal prompting module is connected with the output end of the detection identification circuit, and a first antenna and a second antenna which are connected with the input end of the detection identification circuit are respectively fixed in the first plug and the second plug;
and a plug telescopic mechanism for driving the second plug to extend and retract in the insulating protection seat is also arranged in the shell.
2. The apparatus according to claim 1, wherein the insulating protection seat has a plug guide hole, and the second plug is inserted into the plug guide hole.
3. The apparatus for measuring voltage according to claim 2, wherein the plug retracting mechanism comprises a force-assisting plate and a sliding guide groove disposed on the inner wall of the housing corresponding to the plug guide hole, the force-assisting plate being movably mounted in the sliding guide groove;
the second plug is fixedly connected with the power assisting plate.
4. The apparatus for measuring voltage according to claim 3, wherein a telescopic guide slot is provided corresponding to the sliding guide slot through the inner and outer wall surfaces of the casing, and a slide block is movably mounted in the telescopic guide slot;
the boosting plate is vertically provided with a first limiting block and a second limiting block, a connecting plate is movably arranged between the first limiting block and the second limiting block, and the sliding block is fixedly connected with the connecting plate.
5. The apparatus for measuring voltage according to claim 4, wherein the sliding guide slot has an ejection positioning slot extending from an upper end thereof;
the right end of the ejection positioning groove is provided with an anti-deviation groove, and an anti-deviation lug is fixed on the sliding block corresponding to the anti-deviation groove.
6. The apparatus according to claim 5, wherein the inner wall of the insulating protection seat is provided with a spring baffle corresponding to the first limiting block;
and the spring baffle is fixedly connected with a compression spring which is fixedly connected with the first limiting block.
7. The apparatus for measuring voltage according to claim 1, wherein the detection and identification circuit comprises a signal conversion unit and a micro control unit connected in sequence;
the signal conversion unit comprises a first analog-to-digital converter and a second analog-to-digital converter, wherein the first analog-to-digital converter and the second analog-to-digital converter are respectively connected to a first signal input end and a second signal input end of the micro control unit;
the first antenna and the second antenna are respectively connected to the input ends of the first analog-to-digital converter and the second analog-to-digital converter.
8. The apparatus according to claim 1, wherein a child-resistant cover is sleeved on the insulating protection seat corresponding to the first plug and the second plug;
the tail end of the insulating protection seat is provided with a convex ring, and the tail end of the child protection cover is provided with a plurality of buckles which are tightly matched with the convex ring;
and deformation preformed grooves are arranged on the child protection cover corresponding to the two sides of the buckle.
9. The apparatus according to claim 8, wherein the child-proof cover further comprises a plug-in assisting block perpendicular to the plug-in direction of the child-proof cover.
10. A method for switching single-hole detection and double-hole detection of a voltage measuring device is characterized by comprising the following steps:
when the double-hole detection state is switched, the sliding block moves to the position below the ejection positioning groove in the sliding guide groove, so that the second plug extends out of the insulation protection seat from the plug guide hole;
the slide block moves up to the ejection positioning groove, and the compression spring drives the anti-deviation lug of the slide block to be clamped into the anti-deviation groove;
when the single-hole detection state is switched, the sliding block moves leftwards in the ejection positioning groove, so that the deviation-preventing convex block is separated from the deviation-preventing groove;
the sliding block moves downwards to the sliding guide groove, the compression spring pushes the sliding block to move rightwards to reset, and the second plug is driven to retract into the insulating protection seat along the plug guide hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910868969.3A CN110618303A (en) | 2019-09-16 | 2019-09-16 | Voltage measuring device and method capable of realizing single-hole and double-hole switching detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910868969.3A CN110618303A (en) | 2019-09-16 | 2019-09-16 | Voltage measuring device and method capable of realizing single-hole and double-hole switching detection |
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| Publication Number | Publication Date |
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| CN110618303A true CN110618303A (en) | 2019-12-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910868969.3A Pending CN110618303A (en) | 2019-09-16 | 2019-09-16 | Voltage measuring device and method capable of realizing single-hole and double-hole switching detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595878A (en) * | 2020-12-31 | 2021-04-02 | 广东海洋大学 | Adjustable voltage detection device for electrical engineering convenient to accomodate and carry |
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| CN203164273U (en) * | 2013-03-04 | 2013-08-28 | 甘肃省电力公司检修公司 | Non-contact high-voltage electroscope |
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| CN210954143U (en) * | 2019-09-16 | 2020-07-07 | 优利德科技(中国)股份有限公司 | Voltage measuring device capable of realizing single-hole and double-hole switching detection |
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| US4834251A (en) * | 1988-01-21 | 1989-05-30 | Yu Hon T | Child-proof measuring cup |
| US20050191112A1 (en) * | 2004-02-26 | 2005-09-01 | Hyun-Son Yoon | Slide-type writing instrument with a dry prevention unit |
| CN203164273U (en) * | 2013-03-04 | 2013-08-28 | 甘肃省电力公司检修公司 | Non-contact high-voltage electroscope |
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| CN112595878A (en) * | 2020-12-31 | 2021-04-02 | 广东海洋大学 | Adjustable voltage detection device for electrical engineering convenient to accomodate and carry |
| CN112595878B (en) * | 2020-12-31 | 2022-06-07 | 广东海洋大学 | Adjustable voltage detection device for electrical engineering convenient to accomodate and carry |
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