CN203587669U - Test pencil - Google Patents
Test pencil Download PDFInfo
- Publication number
- CN203587669U CN203587669U CN201320794279.6U CN201320794279U CN203587669U CN 203587669 U CN203587669 U CN 203587669U CN 201320794279 U CN201320794279 U CN 201320794279U CN 203587669 U CN203587669 U CN 203587669U
- Authority
- CN
- China
- Prior art keywords
- test pencil
- insulating coating
- neon bulb
- electric
- insulating casing
- 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 - Lifetime
Links
- 229910052754 neon Inorganic materials 0.000 claims abstract description 30
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims abstract description 29
- 230000001681 protective effect Effects 0.000 claims abstract description 9
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 21
- 230000003321 amplification Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 239000002174 Styrene-butadiene Substances 0.000 claims description 4
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000011115 styrene butadiene Substances 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 abstract 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
Images
Abstract
The utility model discloses a test pencil which comprises an insulating casing. The front end of the insulating casing is connected with a screwdriver. A cavity is arranged in the insulating casing. The cavity is successively filled with a protective resistor, a neon bulb, a spring and a hand touch electrode. The test pencil further comprises a capacitor and an electric bell. The capacitor and the electric bell are connected in series and then are connected in parallel with the neon bulb. According to the utility model, the safety is high; neon bulb damage can be timely discovered, so that the test pencil can be timely changed; an electric shock accident of an electric worker, which is caused by a judgment error produced by the neon bulb damage, is avoided; the life safety of the electric worker is ensured; the tail end of the insulating casing is in threaded connection with a ring-shaped back cover; when the test pencil is damaged, the test pencil can be opened and can continue to be used after a damaged part is changed; the service life of the test pencil is prolonged; and a finger groove is arranged on the insulating casing, which can improve the stability of the test pencil and prevents the test pencil from falling down when the test pencil is used.
Description
Technical field
Whether test pencil is also test pencil, is called for short " electroprobe ", is a kind of electrician's instrument, be used in test wires charged.In test pencil handwriting, there is a neon bulb, if neon bulb is luminous during test, illustrates that wire has electricity, or be the live wire of path.Test pencil has vital role in work about electric power person's work, when test pencil breaks down, electric shock accidents very easily occurs.In general, test pencil fault mainly occurs on neon bulb.When neon bulb damages, test pencil contact electrification wire, neon bulb does not work, and it is not charged that work about electric power person will be judged as this wire, and careless words will touch live wire, thereby get an electric shock.In summary, the security of existing test pencil is not high.
Utility model content
The purpose of this utility model is to provide a kind of test pencil of high security, makes work about electric power person can learn in time that neon bulb damages, and avoids getting an electric shock, and ensures work about electric power person's life security.
The utility model is achieved through the following technical solutions:
A test pencil, comprises insulating coating, and insulating coating front end is connected to screwdriver; insulating coating inside is provided with cavity; in cavity, be filled with successively protective resistance, neon bulb, spring and hand touched electrode, test pencil also comprises electric capacity and electric bell, and electric capacity is in parallel with neon bulb after connecting with electric bell.
Further, described insulating coating end is threaded with annular bonnet.When test pencil damages, the annular bonnet of can outwarding winding, takes test pencil apart, changes damage parts, thereby has extended the serviceable life of test pencil.
Further, described insulating coating has an amplification window near neon tube place, and described amplification window is embedded with the transparent enlarging lens that styrene-butadiene transparent anti-impact resin is made.Neon tube is luminous comparatively faint, and at sunlit outdoor environment, operating personnel can pass through the luminous situation of the clearer observation neon tube of enlarging lens.
Further, described protective resistance resistance is 1.8 megohms.Use the protective resistance of 1.8 megohms, can protection user prerequisite under, cost-saving as far as possible.
Further, described insulating coating is provided with finger recess.By finger recess, can increase the stability of test pencil, avoid test pencil landing in use.
The utility model compared with prior art, has the following advantages and beneficial effect:
(1) the utility model is safe, can find in time that neon bulb damages, so that in time with changing test pencil, avoid work about electric power person to cause misjudgment because neon bulb damages, touch live wire, thereby electric shock accidents occurs, ensured work about electric power person's life security;
(2) the utility model, by connecting annular bonnet in insulating coating end thread, when test pencil damages, can be taken test pencil apart, continues use, thereby extended the serviceable life of test pencil after changing damage parts;
(3) the utility model, by be provided with finger recess on insulating coating, can increase the stability of test pencil, avoids test pencil landing in use.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1.
Wherein: 1-electric capacity, 2-electric bell, 3-annular bonnet, 4-screwdriver, 5-insulating coating, 6-protective resistance, 7-neon bulb, 8-spring, 9-hand touched electrode 10-amplifies window.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment 1:
A test pencil, comprises insulating coating 5, and insulating coating 5 front ends are connected to screwdriver 4; insulating coating 5 inside are provided with cavity; in cavity, be filled with successively protective resistance 6, neon bulb 7, spring 8 and hand touched electrode 9, test pencil also comprises electric capacity 1 and electric bell 2, and electric capacity 1 is in parallel with neon bulb 7 after connecting with electric bell 2.
Referring to Fig. 1, in the present embodiment, during test, by the most advanced and sophisticated contact wire of test pencil screwdriver 4, finger is by hand touched electrode 9.If neon bulb 7 is luminous and electric bell 2 becomes and rings, illustrates that wire has electricity or be the live wire of path.If neon bulb 7 is not luminous and electric bell 2 does not ring, illustrates that wire is not charged or be the zero line of path.If neon bulb 7 is not luminous and electric bell 2 becomes and rings, illustrate that wire has electricity or be the live wire of path, now neon bulb 7 has damaged, and needs timely replacing test pencil.
For better realizing the utility model, described insulating coating has an amplification window near neon tube place, and described amplification window is embedded with the transparent enlarging lens that styrene-butadiene transparent anti-impact resin is made.Neon tube is luminous comparatively faint, and at sunlit outdoor environment, operating personnel can pass through the luminous situation of the clearer observation neon tube of enlarging lens.Styrene-butadiene transparent anti-impact resin is a kind of segmented copolymer, and its key property is to have high transparent concurrently and good impact resistance, density is little, strong coloring force, and processing characteristics is excellent, non-toxic, and electrical instrumentation dish is manufactured field.
For better realizing the utility model, described insulating coating 5 ends are threaded with annular bonnet 3.When test pencil damages, the annular bonnet 3 of can outwarding winding, takes test pencil apart, changes damage parts, thereby has extended the serviceable life of test pencil.
For better realizing the utility model, described protective resistance 6 resistances are 1.8 megohms.Use the protective resistance 6 of 1.8 megohms, can protection user prerequisite under, cost-saving as far as possible.
For better realizing the utility model, described insulating coating 5 is provided with finger recess.By finger recess, can increase the stability of test pencil, avoid test pencil landing in use.
The above; it is only preferred embodiment of the present utility model; not the utility model is done to any pro forma restriction, any simple modification, equivalent variations that every foundation technical spirit of the present utility model is done above embodiment, within all falling into protection domain of the present utility model.
Claims (5)
1. a test pencil; it is characterized in that: described test pencil comprises insulating coating (5); insulating coating (5) front end is connected to screwdriver (4); insulating coating (5) inside is provided with cavity; in cavity, be filled with successively protective resistance (6), neon bulb (7), spring (8) and hand touched electrode (9); described test pencil also comprises electric capacity (1) and electric bell (2), and electric capacity (1) is in parallel with neon bulb (7) after connecting with electric bell (2).
2. a kind of test pencil according to claim 1, is characterized in that: described insulating coating (5) end is threaded with annular bonnet (3).
3. a kind of test pencil according to claim 1, is characterized in that: described insulating coating (5) has an amplification window (10) near neon tube place, and described amplification window is embedded with the transparent enlarging lens that styrene-butadiene transparent anti-impact resin is made.
4. a kind of test pencil according to claim 1, is characterized in that: described protective resistance (6) resistance is 1.8 megohms.
5. a kind of test pencil according to claim 1, is characterized in that: described insulating coating (5) is provided with finger recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794279.6U CN203587669U (en) | 2013-12-06 | 2013-12-06 | Test pencil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794279.6U CN203587669U (en) | 2013-12-06 | 2013-12-06 | Test pencil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203587669U true CN203587669U (en) | 2014-05-07 |
Family
ID=50585569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320794279.6U Expired - Lifetime CN203587669U (en) | 2013-12-06 | 2013-12-06 | Test pencil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203587669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828138A (en) * | 2019-02-20 | 2019-05-31 | 广州林电科技有限公司 | A kind of universal measuring instrument table of the protection against electric shock for power equipment maintaining |
-
2013
- 2013-12-06 CN CN201320794279.6U patent/CN203587669U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828138A (en) * | 2019-02-20 | 2019-05-31 | 广州林电科技有限公司 | A kind of universal measuring instrument table of the protection against electric shock for power equipment maintaining |
| CN109828138B (en) * | 2019-02-20 | 2021-06-01 | 华能苏州热电有限责任公司 | A general purpose measuring instrument for electric shock prevention of power maintenance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |