CN205910252U - Test pencil - Google Patents
Test pencil Download PDFInfo
- Publication number
- CN205910252U CN205910252U CN201620529534.8U CN201620529534U CN205910252U CN 205910252 U CN205910252 U CN 205910252U CN 201620529534 U CN201620529534 U CN 201620529534U CN 205910252 U CN205910252 U CN 205910252U
- Authority
- CN
- China
- Prior art keywords
- neon tube
- shell
- test pencil
- feeler lever
- installation cavity
- 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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- Fuses (AREA)
Abstract
The utility model relates to a test pencil, including the shell, be provided with the neon tube in the shell, externally be provided with a metal feeler lever, the metal feeler lever switches on with the neon tube still be provided with a fusing subassembly in the shell, the fusing subassembly includes the thermal -insulated pipe of the pottery of a setting in the shell, is provided with a fusing stick in that the pottery is thermal -insulated intraductal, the both ends of fusing stick switch on in metal feeler lever and neon tube respectively, the fusing stick is both ends and seals the hollow tube, the utility model discloses a fusing mechanism that has higher degree of safety of installation on traditional test pencil to make test pencil can take place fusing when receiving higher voltage variation, be unlikely to test pencil and take place to puncture, improve the security.
Description
Technical field
The utility model is related to a kind of test pencil, belongs to electrician tool field.
Background technology
Test pencil is widely used in electrician's wiring installation process as a kind of easy electric tool of surveying, electric Chinese realistic painting one
As be the metal feeler lever that structure is a screwdriver-like, and be connected on a neon tube by a resistance thereon, by people
Voltage between body and live wire realizes neon tube is lighted；But run into that some cable contact are unstable or voltage pulsation relatively
During big situation, test pencil is easy to lead to puncturing of test pencil, thus affecting user because of the voltage change of moment very much
Safety, puncture simultaneously and sometimes not only show neon Pipeline damage, electric spark sometimes also can be occurred to explode the screwdriver edge of a knife
Situation about splitting.
Utility model content
The technical problems to be solved in the utility model is: overcome the low technical problem of test pencil degree of safety in prior art,
A kind of test pencil of security is provided.
The utility model solves its technical problem and be the technical scheme is that
A kind of test pencil, including shell, is provided with neon tube in inside the shell, and outside is provided with a metal feeler lever, metal
Feeler lever is turned on neon tube, is additionally provided with a Fuse assembly in described inside the shell, and described Fuse assembly includes a setting outside
Ceramic insulation pipe in shell, is provided with a fuse rod in ceramic insulation pipe, and the two ends of described fuse rod are touched respectively at metal
Bar and neon tube conducting, described fuse rod is a closed at both ends hollow tube.
As further improvement of the utility model, described shell includes a handle portion, is provided with one in handle portion
Installation cavity, is provided with a neon tube fixation kit in described installation cavity, the both ends open of described installation cavity, wherein
One friction top is provided with the opening of one end, described neon tube fixation kit includes two support blocks, in described two support blocks
Opposite face on be provided with groove for snapping in neon tube, the opening of the other end installed is provided with one spacing
Ring, is connected by a diastole spring between described support block and spacing ring, described neon tube, under the promotion of friction top, is pressed on
Between two support blocks, a guide pin bushing is also fixedly connected with described spacing ring, described support block can be slided along guide pin bushing, described
Mutually it is conducted between spacing ring and fuse rod.
As further improvement of the utility model, it is provided with the fixed position of the corresponding neon tube of described installation cavity inwall
The catch net of annular.
As further improvement of the utility model, described shell also includes a rotating part, is provided with one in rotating part
Individual ceramic insulation pipe installation cavity, is additionally provided with a conductive extension block on described spacing ring, one end of described extension block with
And one end of metal feeler lever is inserted into the two ends of ceramic heat pipe installation cavity.
As further improvement of the utility model, one end of described metal feeler lever is provided with an annular projection
Portion, is provided with an annular groove in one end of described ceramic insulation pipe installation cavity, passes through spiral shell in the outer wall of described rotating part
Line is connected with a pressure ring, and the middle part of described pressure ring is provided with a through hole passing through for metal feeler lever.
The beneficial effects of the utility model are:
1st, the utility model installs a fuse body having compared with high degree of safety by one on traditional test pencil,
So that test pencil can fuse when being changed by high voltage, it is unlikely to test pencil and punctures, improve safety
Property.
2nd, neon tube installing mechanism of the present utility model compared to the fixing contact of traditional single spring more preferably it is not easy to
Virtual connection is occurred to touch.
3rd, the fuse rod in earthenware of the present utility model, metal feeler lever, extension block pass through a bar-shaped cavity and connect, surely
Qualitative height, is not susceptible to come off.
4th, pressure ring fixed mechanism of the present utility model can easily change fuse rod, metal feeler lever, improves test pencil
Relevance grade.
Brief description
With reference to the accompanying drawings and examples the utility model is further illustrated
Fig. 1 is generalized section of the present utility model；
In figure: 1, shell；2nd, metal feeler lever；3rd, pressure ring；4th, friction top；5th, support block；6th, neon tube；7th, spacing ring；8th, lead
Set；9th, diastole spring；10th, extension block；11st, ceramic insulation pipe；12nd, fuse rod.
Specific embodiment
Presently in connection with accompanying drawing, the utility model is described in further detail.These accompanying drawings are the schematic diagram of simplification,
Basic structure of the present utility model is only described in a schematic way, therefore it only shows the composition relevant with the utility model.
As shown in figure 1, the utility model is a kind of test pencil, its main body includes the shell of a handle shape, and shell includes
One ceramic insulation pipe installation cavity and a neon tube installation cavity；Wherein neon tube installation cavity is the cylindric empty of a both ends open
Chamber, one end of cavity is provided with a friction top, is fixed with a spacing ring, in spacing ring and pressure on the other end of cavity
It is provided with a pair of support block between tight lid, a hemispheric embedding groove is provided with the opposite side of support block, neon tube
Two ends are fixed in two embedding grooves, are also wholely set a guide pin bushing supplying support block to slide, in limit on spacing ring simultaneously
It is provided with diastole spring, support block is slided in the driving lower edge guide pin bushing of diastole spring between position ring and one of support block, from
And realize the clamping of neon tube, an extension block is further fixed on spacing ring simultaneously；
Ceramic insulation pipe installation cavity is a bar-shaped cavity, is inlaid with a ceramic insulation pipe in bar-shaped cavity inside,
Being provided with a middle part in ceramic insulation pipe is hollow fuse rod, and the hollow of inside can provide for fuse rod in fusing
Breaking space；
Simultaneously in the left and right sides of fuse rod, turn on extension block and metal feeler lever respectively, the cylinder-shaped end of extension block
And the bar-shaped end of metal feeler lever is respectively embedded in the two ends of bar-shaped cavity；
One pressure ring is threaded connection on the outer wall of ceramic insulation pipe installation cavity, the end of metal feeler lever has been arranged
There is an annular protrusion, bar-shaped cavity end is provided with an annular groove, annular protrusion is embedded in annular groove,
Realize under the compression of pressure ring fixing；
When the voltage of metal feeler lever is excessive, when immediate current is excessive, fuse rod can be made to fuse, and ceramic insulation pipe
Can prevent high temperature when fusing from shell is impacted, the test pencil after fusing then can realize the open circuit of test pencil, to making
User brings safety it is also possible to prevent metal feeler lever from being punctured by high pressure spot.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, related work people
Member can carry out various change and modification completely in the range of without departing from this utility model technological thought.This reality
The content being not limited on specification with new technical scope it is necessary to determine its technology according to right
Property scope.
Claims (5)
1. a kind of test pencil, including shell, is provided with neon tube in inside the shell, and outside is provided with a metal feeler lever, and metal touches
Bar is turned on neon tube, it is characterized in that: be additionally provided with a Fuse assembly in described inside the shell, described Fuse assembly includes one and sets
Put the ceramic insulation pipe in inside the shell, be provided with a fuse rod in ceramic insulation pipe, the two ends of described fuse rod respectively at
Metal feeler lever and neon tube conducting, described fuse rod is a closed at both ends hollow tube.
2. a kind of test pencil as claimed in claim 1, is characterized in that: described shell includes a handle portion, sets in handle portion
It is equipped with an installation cavity, a neon tube fixation kit is installed in described installation cavity, the two ends of described installation cavity are opened
Mouthful, a friction top is provided with the opening of one end, described neon tube fixation kit includes two support blocks, described two wherein
Groove for snapping in neon tube is provided with the opposite face of individual support block, the opening of the other end installed is provided with one
Individual spacing ring, is connected by a diastole spring between described support block and spacing ring, described neon tube under the promotion of friction top,
It is pressed between two support blocks, a guide pin bushing is also fixedly connected with described spacing ring, described support block can be slided along guide pin bushing
Dynamic, mutually it is conducted between described spacing ring and fuse rod.
3. a kind of test pencil as claimed in claim 2, is characterized in that: in the fixed bit of the corresponding neon tube of described installation cavity inwall
Install the catch net being equipped with annular.
4. a kind of test pencil as claimed in claim 2, is characterized in that: described shell also includes a rotating part, in rotating part
It is provided with a ceramic insulation pipe installation cavity, a conductive extension block, described extension block are additionally provided with described spacing ring
One end and one end of metal feeler lever be inserted into the two ends of ceramic heat pipe installation cavity.
5. a kind of test pencil as claimed in claim 4, is characterized in that: be provided with an annular on one end of described metal feeler lever
Lug boss, one end of described ceramic insulation pipe installation cavity is provided with an annular groove, in the outer wall of described rotating part
It has been threaded connection a pressure ring, the middle part of described pressure ring has been provided with a through hole passing through for metal feeler lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620529534.8U CN205910252U (en) | 2016-06-03 | 2016-06-03 | Test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620529534.8U CN205910252U (en) | 2016-06-03 | 2016-06-03 | Test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205910252U true CN205910252U (en) | 2017-01-25 |
Family
ID=57814294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620529534.8U Expired - Fee Related CN205910252U (en) | 2016-06-03 | 2016-06-03 | Test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205910252U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490609A (en) * | 2018-11-02 | 2019-03-19 | 郑州海威光电科技有限公司 | A kind of electric power detection instrument protective case |
| CN114002485A (en) * | 2021-10-12 | 2022-02-01 | 杨茂菊 | Test pencil with protect function |
-
2016
- 2016-06-03 CN CN201620529534.8U patent/CN205910252U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109490609A (en) * | 2018-11-02 | 2019-03-19 | 郑州海威光电科技有限公司 | A kind of electric power detection instrument protective case |
| CN114002485A (en) * | 2021-10-12 | 2022-02-01 | 杨茂菊 | Test pencil with protect function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170125 Termination date: 20170603 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |