CN206671465U - A kind of electrocution-proof protection device - Google Patents
A kind of electrocution-proof protection device Download PDFInfo
- Publication number
- CN206671465U CN206671465U CN201720468628.3U CN201720468628U CN206671465U CN 206671465 U CN206671465 U CN 206671465U CN 201720468628 U CN201720468628 U CN 201720468628U CN 206671465 U CN206671465 U CN 206671465U
- Authority
- CN
- China
- Prior art keywords
- sheet metal
- triode
- type sheet
- slideway
- electrocution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of electrocution-proof protection device, including shell, it is characterized in that：Symmetrical slideway is provided with the outer casing inner wall, sliding block is provided with each slideway, L-type sheet metal is connected between two sliding blocks, two sliding blocks are connected to the side of the slideway inwall by spring respectively, the L-type sheet metal is located between two slideways and passes through the opening of the shell, the side of the L-type technology piece is provided with the recess with cam contact, the cam connects rotating bar, the rotating bar passes through the cage connection slide block, and the L-type sheet metal is electrically connected with test circuit by wire.Whether the utility model can effectively protect L-type sheet metal not polluted by extraneous dust and impurity, and cordless test object under test can be used powered, be effectively guaranteed the personal safety of tester.
Description
Technical field
Field of electrical equipment is the utility model is related to, specifically, is related to a kind of electrocution-proof protection device.
Background technology
At present, generally all it is to enter to act using electronic component in order to judge whether power circuit or power equipment are powered
First to test, conventional live testing equipment is voltage test pencil etc., and most of existing alternating current test equipment is contact, it
Using priciple require that test pencil must reach over to phase line (i.e. live wire), but it seems helpless in some occasions, such as lookup
There is open circuit etc. in the fracture of wire of electric blanket, the cabling being hidden in wall, in addition, the voltage test pencil of contact is because human body and electric wire
Contact, there is great potential safety hazard.Induction type voltage test pencil is tested using induction type, without physical contact, can be checked control line, be led
Voltage on body and socket checks off position along wire, can ensure the personal safety of testing staff to the utmost.But
It is that the test probe of the voltage test pencil of induction type is all exposed in hull outside, is easy to be easily polluted by the external foreign matters, causes measurement inaccurate
Really, this is the deficiencies in the prior art part.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electrocution-proof protection device, and the test probe of protector does not make
Used time can bounce back in meeting shell, protect test probe not to be easily polluted by the external foreign matters, and use contactless electrical verification mode, greatly
Protect the personal safety of tester.
The utility model, which adopts the following technical scheme that, realizes goal of the invention：
A kind of electrocution-proof protection device, including shell, it is characterized in that：Symmetrical slideway is provided with the outer casing inner wall, often
Sliding block is provided with the individual slideway, connects L-type sheet metal between two sliding blocks, two sliding blocks pass through spring respectively
It is connected to the side of the slideway inwall, the L-type sheet metal opening between two slideways and through the shell
Mouthful, the side of the L-type sheet metal is provided with the recess with cam contact, and the cam connects rotating bar, and the rotating bar is worn
The cage connection slide block is crossed, the L-type sheet metal is electrically connected with test circuit by wire.
As the further restriction of the technical program, the test circuit includes three poles being connected with the L-type sheet metal
Pipe VT1, the triode VT1 emitter stage connecting triode VT2 base stage, the emitter stage of the triode VT2 connect three poles
Pipe VT3 base stage, collector series connection light emitting diode VD, the resistance R and power supply G, the triode VT1 of the triode VT3
The power supply is connected respectively to triode VT2 colelctor electrode.
The sliding block is rectangular parallelepiped structure, and the inwall of the slideway is close in the both sides up and down of the sliding block.
Prior art is compared, and the advantages of the utility model and good effect is：Slide block is rotated manually, and slide block is by turning
Lever drives cam rotation so that the convex portion of cam promotes and moved outside L-type sheet metal, and sliding block moves along slideway, and spring is in stretching
Shell is exposed in state, L-type sheet metal one end, and when the convex portion of cam is located in recess, stop operating slide block, by L-type metal
Piece is close to object under test, if light emitting diode VD lights, illustrates that object under test is powered, conversely, then object under test is not charged.
It is completed, rotates slide block again and rotate 180 ° so that the cam side relative with convex portion is located in recess, spring reset,
Moved after pulling sliding block, sliding block drives L-type sheet metal to be retracted into shell.The utility model can effectively protect L-type sheet metal not
Polluted by extraneous dust and impurity, and cordless test object under test can be used whether powered, be effectively guaranteed survey
The personal safety of examination personnel.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 of the present utility model A-A sectional views.
Fig. 3 is the partial enlarged drawing of Fig. 1 of the present utility model part B.
Fig. 4 is the circuit diagram of test circuit of the present utility model.
In figure：1st, shell, 2, L-type sheet metal, 3, slide block, 4, rotating bar, 5, test circuit, 6, wire, 7, cam, 8,
Spring, 9, sliding block, 10, slideway, 11, recess, VD light emitting diodes.
Embodiment
Below in conjunction with the accompanying drawings, an embodiment of the present utility model is described in detail, it is to be understood that this
The protection domain of utility model is not limited by embodiment.
As Figure 1-Figure 4, the utility model includes shell 1, and symmetrical slideway 10 is provided with the inwall of shell 1,
Sliding block 9 is provided with each slideway 10, connects L-type sheet metal 2 between two sliding blocks 9, two sliding blocks 9 are distinguished
The side of the inwall of slideway 10 is connected to by spring 8, the L-type sheet metal 2 is between two slideways 10 and wears
The opening of the shell 1 is crossed, the side of the L-type sheet metal 2 is provided with the recess 11 contacted with cam 7, and the cam 7 connects
Rotating bar 4, the rotating bar 4 pass through wire through the shell 1 connection slide block 3, the L-type sheet metal 2 with test circuit 5
6 are electrically connected with.
The test circuit 5 includes the triode VT1 being connected with the L-type sheet metal, the emitter stage of the triode VT1
Connecting triode VT2 base stage, the emitter stage connecting triode VT3 of triode VT2 base stage, the triode VT3's
Collector and emitter concatenation light emitting diode VD, resistance R and power supply G, the colelctor electrode of the triode VT1 and triode VT2
It is connected respectively to the power supply.
The sliding block 9 is rectangular parallelepiped structure, and the inwall of the slideway 10 is close in the both sides up and down of the sliding block 9.Such a knot
Structure facilitates sliding block 9 to be moved horizontally in slideway 10, prevents from tilting in the moving process of L-type sheet metal 2.
Operation principle of the present utility model is：Slide block 3 is rotated manually, and slide block 3 is by rotating bar 4 with 7 turns of moving cam
It is dynamic so that the convex portion of cam 7 promotes and moved outside L-type sheet metal 2, and sliding block 9 moves along slideway 10, and spring 8 is in extended state, L-type
Shell 1 is exposed in the one end of sheet metal 2, and when the convex portion of cam 7 is located in recess 11, stop operating slide block 3, by L-type sheet metal 2
Close to object under test, if light emitting diode VD lights, illustrate that object under test is powered, conversely, then object under test is not charged.Survey
Examination finishes, and rotates slide block 3 again and rotates 180 ° so that the side relative with convex portion of cam 7 is located in recess 11, and spring 8 is multiple
Position, moved after pulling sliding block 9, sliding block 9 drives L-type sheet metal 2 to be retracted into shell 1.The utility model can effectively protect L-type golden
Belong to piece 2 not polluted by extraneous dust and impurity, and cordless test object under test can be used whether powered, it is effective to protect
The personal safety of tester is demonstrate,proved.
The compound transistor of triode VT1, VT2 composition of test circuit 5, has been connected into direct-coupling with triode VT3 and has penetrated
Pole follows amplifying circuit.VT1 base stage connects L-type sheet metal 2, and triode VT3 load is light emitting diode VD and its current limliting electricity
Hinder R.
When L-type sheet metal 2 is close to object under test, if object under test is powered, L-type sheet metal 2 can sense atomic weak
Ac signal, through triode VT1~VT3 amplification after, driving light emitting diode VD send light.
Triode VTl~VT3 selects 9014 or 3DG8 type silicon NPN low-power transistors, and current amplification factor takes β>50.
The dynamic light emitting diode VD common red light emitting diodes of BT-20l types.Resistance R selects RTX-1/8W type carbon film resistors, it
Main function is that the excessive electric current of limitation passes through light emitting diode VD.L-type sheet metal 2 uses copper sheet or iron plate.Power supplyG uses two
Grain buttonBatteryIt is in series, button silver oxide cell SR44 or AG13, G13-A, voltage 3V can be chosen.
Disclosed above is only a specific embodiment of the present utility model, and still, the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into the scope of protection of the utility model.
Claims (3)
1. a kind of electrocution-proof protection device, including shell, it is characterized in that：Symmetrical slideway is provided with the outer casing inner wall, each
Sliding block is provided with the slideway, connects L-type sheet metal between two sliding blocks, two sliding blocks are connected by spring respectively
The side of the slideway inwall is connected on, the L-type sheet metal is located between two slideways and passes through the opening of the shell,
The side of the L-type sheet metal is provided with the recess with cam contact, and the cam connects rotating bar, and the rotating bar passes through institute
Cage connection slide block is stated, the L-type sheet metal is electrically connected with test circuit by wire.
2. electrocution-proof protection device according to claim 1, it is characterized in that：The test circuit includes and the L-type metal
The triode VT1, the triode VT1 of piece connection emitter stage connecting triode VT2 base stage, the hair of the triode VT2
Emitter-base bandgap grading connecting triode VT3 base stage, collector series connection light emitting diode VD, resistance R and the power supply G of the triode VT3, institute
The colelctor electrode for stating triode VT1 and triode VT2 is connected respectively to the power supply.
3. electrocution-proof protection device according to claim 1, it is characterized in that：The sliding block is rectangular parallelepiped structure, the sliding block
Both sides up and down be close to the inwall of the slideway.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720468628.3U CN206671465U (en) | 2017-04-30 | 2017-04-30 | A kind of electrocution-proof protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720468628.3U CN206671465U (en) | 2017-04-30 | 2017-04-30 | A kind of electrocution-proof protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206671465U true CN206671465U (en) | 2017-11-24 |
Family
ID=60370554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720468628.3U Expired - Fee Related CN206671465U (en) | 2017-04-30 | 2017-04-30 | A kind of electrocution-proof protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206671465U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526393A (en) * | 2020-11-26 | 2021-03-19 | 广东电网有限责任公司中山供电局 | Metal meter box electric leakage warning device |
| CN117471268A (en) * | 2023-12-28 | 2024-01-30 | 深圳市伟鼎自动化科技有限公司 | Semiconductor device testing apparatus and method |
-
2017
- 2017-04-30 CN CN201720468628.3U patent/CN206671465U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112526393A (en) * | 2020-11-26 | 2021-03-19 | 广东电网有限责任公司中山供电局 | Metal meter box electric leakage warning device |
| CN117471268A (en) * | 2023-12-28 | 2024-01-30 | 深圳市伟鼎自动化科技有限公司 | Semiconductor device testing apparatus and method |
| CN117471268B (en) * | 2023-12-28 | 2024-04-05 | 深圳市伟鼎自动化科技有限公司 | Semiconductor device testing apparatus and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171124 Termination date: 20180430 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |