CN211426623U - Test pencil is used in computer maintenance that protectiveness is good - Google Patents
Test pencil is used in computer maintenance that protectiveness is good Download PDFInfo
- Publication number
- CN211426623U CN211426623U CN201921780708.8U CN201921780708U CN211426623U CN 211426623 U CN211426623 U CN 211426623U CN 201921780708 U CN201921780708 U CN 201921780708U CN 211426623 U CN211426623 U CN 211426623U
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- Prior art keywords
- transparent insulating
- good
- insulating shell
- test
- touch electrode
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Abstract
The utility model discloses a test pencil is used in computer maintenance that protectiveness is good, including transparent insulating casing, test contact and the protection lantern ring, shunt resistance is installed through the screw at the top in the transparent insulating casing, the bottom is provided with current limiting resistor in the transparent insulating casing, it has neon tube and neon tube to link to each other with the current limiting resistor electrical property through the support mounting in the transparent insulating casing, test contact is installed through the screw to transparent insulating casing one end, the transparent insulating casing other end is connected with hand touch electrode and hand touch electrode through the connecting piece and links to each other with the neon tube electrical property, hand touch electrode upper end is provided with discernment electrode and links to each other with the shunt resistance electrical property, the test contact outside is provided with the protection lantern ring. The utility model discloses can not only measure whether the measured object is electrified, can conveniently distinguish moreover that it is dangerous electric shock voltage or not dangerous response electric potential, and the protectiveness is good, is fit for being extensively promoted and used.
Description
Technical Field
The utility model relates to an electrical apparatus detects technical field, in particular to test pencil is used in computer maintenance that protectiveness is good.
Background
When a computer is maintained, a test pencil is required to be used for detecting a detected object and determining whether the detected object is electrified, however, computer accessories and a metal shell do not have electric shock voltage dangerous to a human body, only show electric potential generated by canvas capacitance or normal resistance induction and enable a neon tube to emit light, a common test pencil cannot distinguish the dangerous electric shock voltage from the dangerous induction electric potential, electric leakage detection is difficult and misjudgment is easy to cause, and the existing test pencil is poor in protection performance.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at providing a good protection's test pencil for computer maintenance, in transparent insulating casing, test contact, current-limiting resistor, neon tubing and hand touch electrode electric connection, through setting up the shunt resistance branch road, when the hand contacts discerning electrode and hand touch electrode simultaneously, make shunt resistor connect in parallel at test contact, current-limiting resistor, neon tubing and hand touch electrode circuit, the hand only contacts with hand touch electrode, the neon tubing ignites, show the measured object is electrified, when the hand contacts hand touch electrode and discerning electrode simultaneously, if the measured object has no dangerous high potential, because the potential source internal resistance is very big, thereby greatly reduced the electrified unit of measured object, the neon tubing does not ignite, if the measured object has dangerous electric shock voltage, because its internal resistance is little, the electrified potential of the access shunt resistor hardly reduces, then the neon tubing keeps igniting, reach the purpose that can distinguish safe and dangerous voltage, the problems in the background art can be effectively solved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a test pencil is used in computer maintenance that protectiveness is good, includes transparent insulating casing, test contact and the protection lantern ring, shunt resistance is installed through the screw at the top in the transparent insulating casing, the bottom is provided with current limiting resistor in the transparent insulating casing, it has neon tube and current limiting resistor electrical property to link to each other to install through the support mounting in the transparent insulating casing, test contact is installed through the screw to transparent insulating casing one end, the transparent insulating casing other end is connected with hand touch electrode and neon tube electrical property through the connecting piece and links to each other, hand touch electrode upper end is provided with discernment electrode and shunt resistor electrical property and links to each other, the test contact outside is provided with the protection lantern ring, nearly electric precaution device is installed through the mounting bracket in transparent insulating casing.
Furthermore, one end of the outer side of the transparent insulating shell is provided with a holding ring, and the outer surface of the holding ring is provided with salient points.
Further, the shunt resistor and the current limiting resistor are electrically connected with the test contact.
Furthermore, the outer surface of the transparent insulating shell is provided with a corrosion-resistant layer, and the corrosion-resistant layer is made of polytetrafluoroethylene materials.
Further, a sliding groove is formed in the outer side of the transparent insulating shell, and a sliding block is arranged on the inner side of the protective lantern ring and located in the sliding groove.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. in the transparent insulating shell, the test contact, the current-limiting resistor, the neon tube and the hand-touch electrode are electrically connected, by arranging a shunt resistor branch circuit, when a hand simultaneously contacts the identification electrode and the hand-touch electrode, the shunt resistor is connected in parallel with a circuit of the test contact, the current-limiting resistor, the neon tube and the hand-touch electrode, the hand is only contacted with the hand-touch electrode, the neon tube is lighted to indicate that a detected object is electrified, when the hand simultaneously contacts the hand-touch electrode and the identification electrode, if the detected object has no dangerous high potential, the neon tube is not lighted because the internal resistance of a potential source is very large, so that the electrified unit of the detected object is greatly reduced, if the detected object has dangerous electric shock voltage, the internal resistance is small, the electrified potential of the detected object is hardly reduced by connecting the shunt resistor, and the neon tube is lighted to achieve the purpose of distinguishing the safe voltage.
2. Through setting up spout and slider, can drive the protection lantern ring and remove along transparent insulating casing, remove the protection lantern ring and make test contact expose, alright in order to carry out normal test, not the time spent remove the protection lantern ring and cover test contact, can protect for test contact provides the protection, prevent its damage, barrier propterty is good.
3. Through setting up corrosion-resistant layer, can improve transparent insulating casing's corrosion resisting property, avoid it to appear corrosion damage, through setting up nearly electric precaution device, can detect in advance when the test pen is close to test circuit, detect whether be close to strong power and high voltage power supply, the staff can prepare carefully in advance, then recycle the test pen and carry out the accuracy testing.
Drawings
Fig. 1 is a sectional view of the utility model discloses a test pencil is used in computer maintenance that protectiveness is good.
Fig. 2 is a schematic diagram of the corrosion-resistant layer of the test pencil for computer maintenance with good protection performance.
Fig. 3 is the utility model relates to a protection lantern ring sketch map of test pencil is used in computer maintenance that protectiveness is good.
Fig. 4 is the utility model relates to a good electrical apparatus connection diagram of test pencil is used in computer maintenance of protectiveness.
In the figure: 1. a protective collar; 2. a slider; 3. a chute; 4. a shunt resistor; 5. a neon tube; 6. a holding ring; 7. a transparent insulating housing; 8. a recognition electrode; 9. a hand-touch electrode; 10. salient points; 11. a current limiting resistor; 12. testing the contact; 13. a corrosion-resistant layer; 14. nearly electric precaution device.
Detailed Description
In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.
As shown in fig. 1-4, a computer-maintenance test pencil with good protection performance comprises a transparent insulating shell 7, a test contact 12 and a protective collar 1, the top in the transparent insulating shell 7 is provided with a shunt resistor 4 through a screw, the bottom in the transparent insulating shell 7 is provided with a current limiting resistor 11, a neon tube 5 is arranged in the transparent insulating shell 7 through a bracket, the neon tube 5 is electrically connected with a current-limiting resistor 11, one end of the transparent insulating shell 7 is provided with a test contact 12 through a screw, the other end of the transparent insulating shell 7 is connected with a hand touch electrode 9 through a connecting piece, the hand touch electrode 9 is electrically connected with the neon tube 5, the upper end of the hand touch electrode 9 is provided with a recognition electrode 8, the recognition electrode 8 is electrically connected with the shunt resistor 4, the outer side of the test contact 12 is provided with a protective sleeve ring 1, and the top of the transparent insulating shell 7 is provided with a near electric early warning device 14 through a mounting rack.
Wherein, one end of the outer side of the transparent insulating shell 7 is provided with a holding ring 6, and the outer surface of the holding ring 6 is provided with a salient point 10.
In this embodiment, as shown in fig. 1, the protruding points 10 can prevent the human hand from sliding when holding the grip ring 6.
The shunt resistor 4 and the current limiting resistor 11 are electrically connected with the test contact 12.
Wherein, the outer surface of the transparent insulating shell 7 is provided with a corrosion-resistant layer 13, and the corrosion-resistant layer 13 is made of polytetrafluoroethylene material.
In this embodiment, as shown in fig. 2, the corrosion-resistant layer 13 can improve the corrosion resistance of the transparent insulating housing 7, and prevent corrosion damage.
Wherein, the outside of transparent insulating casing 7 is provided with spout 3, 1 inboard of the protection lantern ring is provided with slider 2 and slider 2 is located spout 3.
In this embodiment, as shown in fig. 1, the sliding groove 3 and the sliding block 2 can drive the protection sleeve ring 1 to move along the transparent insulating housing 7.
It should be noted that the utility model relates to a good protection of computer maintenance used test pencil, during operation, in transparent insulating casing 7, test contact 12, current-limiting resistor 11, neon tube 5 and hand touch electrode 9 electrical connection, when the hand contacts recognition electrode 8 and hand touch electrode 9 simultaneously, make shunt resistor 4 connect in parallel in test contact 12, current-limiting resistor 11, neon tube 5 and hand touch electrode 9 circuit, the hand only contacts with hand touch electrode 9, neon tube 5 glows, it shows the measured object is electrified, when the hand contacts hand touch electrode 9 and recognition electrode 8 simultaneously, if the measured object has no dangerous high potential, because the internal resistance of electric potential source is very big, thus greatly reduced the electrified unit of the measured object, neon tube 5 does not glow, if the measured object has dangerous electric shock voltage, because its internal resistance is small, cut-in resistor 4 hardly reduces the electrified potential, neon tube 5 glows, the purpose of distinguishing safety voltage is achieved, the sliding groove 3 and the sliding block 2 are utilized, the protection sleeve ring 1 can be driven to move along the transparent insulating shell 7, the protection sleeve ring 1 is moved to enable the test contact 12 to be exposed, normal test can be conducted, the protection contact 12 is covered by the protection sleeve ring 1 when the test pen is not used, protection can be provided for the test contact 12, damage of the test contact is prevented, the corrosion-resistant layer 13 can improve the corrosion resistance of the transparent insulating shell 7, corrosion damage of the test contact is avoided, the protection performance is good, when the test pen is close to a test circuit, the near-electric early warning device 14 (produced by Jinzhou city Jinrui power apparatus Co., Ltd.) is used for detection in advance, whether the detection is close to a strong power supply and a high-voltage power supply or not, a worker can prepare carefully.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides a test pencil is used in computer maintenance that protectiveness is good, includes transparent insulating casing (7), test contact (12) and protection lantern ring (1), its characterized in that: the top in the transparent insulating shell (7) is provided with a shunt resistor (4) through a screw, a current limiting resistor (11) is arranged at the bottom in the transparent insulating shell (7), a neon tube (5) is installed in the transparent insulating shell (7) through a support, the neon tube (5) is electrically connected with the current limiting resistor (11), one end of the transparent insulating shell (7) is provided with a test contact (12) through a screw, the other end of the transparent insulating shell (7) is connected with a hand touch electrode (9) through a connecting piece, the hand touch electrode (9) is electrically connected with the neon tube (5), the upper end of the hand touch electrode (9) is provided with a recognition electrode (8), the recognition electrode (8) is electrically connected with the shunt resistor (4), the test device is characterized in that a protective sleeve ring (1) is arranged on the outer side of the test contact (12), and a near-electricity early warning device (14) is installed on the top of the transparent insulating shell (7) through a mounting frame.
2. The good-protection test pencil for computer maintenance of claim 1, characterized in that: one end of the outer side of the transparent insulating shell (7) is provided with a holding ring (6), and salient points (10) are arranged on the outer surface of the holding ring (6).
3. The good-protection test pencil for computer maintenance of claim 1, characterized in that: the shunt resistor (4) and the current limiting resistor (11) are electrically connected with the test contact (12).
4. The good-protection test pencil for computer maintenance of claim 1, characterized in that: the outer surface of the transparent insulating shell (7) is provided with a corrosion-resistant layer (13), and the corrosion-resistant layer (13) is made of polytetrafluoroethylene materials.
5. The good-protection test pencil for computer maintenance of claim 1, characterized in that: the outer side of the transparent insulating shell (7) is provided with a sliding groove (3), the inner side of the protective sleeve ring (1) is provided with a sliding block (2), and the sliding block (2) is located in the sliding groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921780708.8U CN211426623U (en) | 2019-10-22 | 2019-10-22 | Test pencil is used in computer maintenance that protectiveness is good |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921780708.8U CN211426623U (en) | 2019-10-22 | 2019-10-22 | Test pencil is used in computer maintenance that protectiveness is good |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211426623U true CN211426623U (en) | 2020-09-04 |
Family
ID=72287396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921780708.8U Expired - Fee Related CN211426623U (en) | 2019-10-22 | 2019-10-22 | Test pencil is used in computer maintenance that protectiveness is good |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211426623U (en) |
-
2019
- 2019-10-22 CN CN201921780708.8U patent/CN211426623U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211130 Address after: 116085 some areas on the fourth floor of block B, Hongtai building, No. 29, Xixian street, Dalian high tech Industrial Park, Dalian, Liaoning Province (room No.: 404-7) Patentee after: Dalian Bokun Technology Co.,Ltd. Address before: 362334 No. 33, gongbian, Hongxi village, Hongmei Town, Nan'an City, Quanzhou City, Fujian Province Patentee before: Huang Dongsheng |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200904 |