CN201535790U - Automobile circuit check pen - Google Patents
Automobile circuit check pen Download PDFInfo
- Publication number
- CN201535790U CN201535790U CN2009202483557U CN200920248355U CN201535790U CN 201535790 U CN201535790 U CN 201535790U CN 2009202483557 U CN2009202483557 U CN 2009202483557U CN 200920248355 U CN200920248355 U CN 200920248355U CN 201535790 U CN201535790 U CN 201535790U
- Authority
- CN
- China
- Prior art keywords
- circuit board
- therewith
- shaped clamp
- pen
- automobile
- 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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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model relates to the technical field of automobile circuit check, in particular to automobile circuit check pen which is characterized by comprising a pen body, a circuit board which is arranged in the pen body and is connected with the pen body through a fixing bolt, a No. 2 U-shaped clamp and a No. 3 U-shaped clamp which are respectively and fixedly connected with the upper portion of the circuit board, an incandescent lamp which is inserted with the No. 2 U-shaped clamp and the No. 3 U-shaped clamp, a No. 1 U-shaped clamp which is fixedly connected with the lower portion of the circuit board, a main probe which is arranged on the lower portion of the pen body and is inserted with the No. 1 U-shaped clamp, an insulation casing pipe which is arranged on the end portion of the pen body and is sleeved with the main probe, a crocodile clip which is connected with the circuit board through an electric wire, and an auxiliary probe which is arranged on a handle part of the crocodile clip. The circuit board is provided with two luminescent diodes which are reversely connected, and current limiting resistors which are connected in series with the two luminescent diodes. The automobile circuit check pen has simple structure, multiple functions, convenient use and convenient extension.
Description
Technical field
The utility model relates to automobile circuit detection technique field, particularly a kind of automobile circuit detecting pen.
Background technology
Present automobile circuit all is made up of computer-controlled circuit and traditional on-off circuit two parts, in the automobile circuit trouble hunting, generally adopts the electric circuit inspection pen to come testing circuit usually.Because the structure difference of electric circuit inspection pen, its effect are also different.The electric circuit inspection pen that has only adopts the bigger incandescent lamp bulb of power as display element, causes its internal resistance less, when the voltage of measuring the output of computer and sensor and pulse signal, signal source is produced interference, even damage; The electric circuit inspection pen that has only adopts lower-powered light emitting diode as display element, cause its internal resistance bigger, inaccurate when measuring on-off circuit such as traditional headlight and loudspeaker, be vulnerable to the interference of induced voltage, and can not judge the fault of electrical appliance by the brightness of observing detecting pen.Simultaneously present electric circuit inspection pen all exists incandescent lamp bulb to change inconvenient, as to be difficult to decision circuitry current direction, can't use problems such as crocodile clip is connected with plug terminal to be measured very inconvenient when measuring the electrical appliance plug.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, is applicable to the automobile circuit detecting pen that detects various automobile circuits.
The purpose of this utility model realizes by following technical proposals:
A kind of automobile circuit detecting pen of the present utility model, it is characterized in that comprising a body, be located in this body and by the set bolt circuit board that is connected of a body therewith, the top of circuit board No. 2 U-shapeds folders and No. 3 U-shapeds that connect that fix press from both sides therewith respectively, No. 2 U-shaped folders and No. 3 U-shapeds press from both sides the incandescent lamp bulb of pegging graft therewith, No. 1 U-shaped folder that fixes and be connected with the bottom of described circuit board, be located at the bottom of described body and No. 1 U-shaped folder primary probe of pegging graft therewith, be located at the end of described body and the insulating sleeve of primary probe socket therewith, by electric wire and the crocodile clip that described circuit board is connected, be located at the assist probes of this crocodile clip shank.
Described circuit board is provided with two light emitting diodes of anti-phase connection, therewith the current-limiting resistance of two light emitting diode series connection.
Characteristics of the present utility model are:
1, incandescent lamp bulb adopts the autobulb of straight cutting structure, and it is convenient to change;
2, the light emitting diode parallel connection and the polarity of two different colours are opposite, can judge direction of current by the glow color of observing detecting pen;
3, circuit of LED and incandescent lamp circuit are united two into one, can change the internal resistance of whole detecting pen by the method for inserting or extracting incandescent lamp bulb, to adapt to the maintenance of various circuit;
4, the shank at crocodile clip connects an assist probes, when measuring appliance plug, primary probe and assist probes can be inserted terminal to be measured respectively, the convenient detection.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a circuit diagram of the present utility model.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
As shown in Figure 1, a kind of automobile circuit detecting pen of the present utility model, it is characterized in that comprising a body 4, be located in this body 4 and by set bolt 8 circuit board 7 that is connected of a body 4 therewith, the top of circuit board 79 and No. 3 U-shapeds folders 10 of No. 2 U-shapeds folders of fixing and connecting therewith respectively, 9 and No. 3 U-shapeds of No. 2 U-shaped folders press from both sides 10 incandescent lamp bulbs 11 of pegging graft therewith, No. 1 U-shaped folder 3 that fixes and be connected with the bottom of described circuit board 7, be located at the bottom of described body 4 and No. 1 U-shaped folder 3 primary probes 1 of pegging graft therewith, be located at the end of described body 4 and the insulating sleeve 2 of primary probe 1 socket therewith, by electric wire and the crocodile clip 13 that described circuit board 7 is connected, be located at the assist probes 12 of these crocodile clip 13 shanks.
As shown in Figure 2, described circuit board 7 is provided with two light emitting diode VL1, VL2 of anti-phase connection, therewith the current-limiting resistance R of two light emitting diode VL1, VL2 series connection.
The principle of work of automobile circuit detecting pen of the present utility model is:
When surveying positive source, electric current enters in the body 4 from primary probe 1, after entering circuit board 7 by No. 1 U-shaped folder 3, be divided into two circuits: one road electric current arrives two light emitting diode VL1, VL2 that color is different, and two light emitting diode VL1, VL2 parallel connection and polarity are opposite, electric current flows out light emitting diode, through current-limiting resistance R and No. 2 U-shaped folders 9, arrive crocodile clip 13 at last, enter power cathode, form the loop, lumination of light emitting diode; Another road electric current enters incandescent lamp EL by No. 3 U-shaped folders 10, behind the outflow incandescent lamp EL, through No. 2 U-shapeds folders 9, arrives crocodile clip 13 at last, enters power cathode, forms the loop, and incandescent lamp EL is bright.When tested power lead just often, incandescent lamp EL is bright; When tested power lead loose contact, incandescent lamp EL is gloomy or do not work.
The utility model is owing to the automobile incandescent lamp bulb that adopts the straight cutting structure, so change conveniently.The light emitting diode parallel connection and the polarity of two different colours are connected on the contrary, can judge direction of current by the glow color of observing detecting pen.Circuit of LED and incandescent lamp circuit are united two into one, can change the internal resistance of whole detecting pen by the method for inserting or extracting incandescent lamp bulb, to adapt to the maintenance of various circuit.For example: when pulling up incandescent lamp bulb, can come the voltage and the pulse signal of measured automobiles computer and sensor output by the light emitting diode in the detecting pen.When turning back to incandescent lamp bulb, utilize its less internal resistance, can measure the power lead of electrical appliance, and can judge whether loose contact or be connected in series other electrical appliance of power lead by the brightness of observing incandescent lamp.Detection device plug is provided with assist probes at the crocodile clip shank for convenience, uses with primary probe.The utility model is simple in structure, and function is many, and is easy to use, is convenient to promote.
Claims (2)
1. automobile circuit detecting pen, it is characterized in that comprising a body, be located in this body and by the set bolt circuit board that is connected of a body therewith, the top of circuit board No. 2 U-shapeds folders and No. 3 U-shapeds that connect that fix press from both sides therewith respectively, No. 2 U-shaped folders and No. 3 U-shapeds press from both sides the incandescent lamp bulb of pegging graft therewith, No. 1 U-shaped folder that fixes and be connected with the bottom of described circuit board, be located at the bottom of described body and No. 1 U-shaped folder primary probe of pegging graft therewith, be located at the end of described body and the insulating sleeve of primary probe socket therewith, by electric wire and the crocodile clip that described circuit board is connected, be located at the assist probes of this crocodile clip shank.
2. automobile circuit detecting pen according to claim 1 is characterized in that described circuit board is provided with two light emitting diodes of anti-phase connection, therewith the current-limiting resistance of two light emitting diode series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202483557U CN201535790U (en) | 2009-11-24 | 2009-11-24 | Automobile circuit check pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202483557U CN201535790U (en) | 2009-11-24 | 2009-11-24 | Automobile circuit check pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535790U true CN201535790U (en) | 2010-07-28 |
Family
ID=42535568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202483557U Expired - Fee Related CN201535790U (en) | 2009-11-24 | 2009-11-24 | Automobile circuit check pen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535790U (en) |
-
2009
- 2009-11-24 CN CN2009202483557U patent/CN201535790U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20101124 |