CN209044021U - A kind of automobile circuit test lamp - Google Patents
A kind of automobile circuit test lamp Download PDFInfo
- Publication number
- CN209044021U CN209044021U CN201821721206.3U CN201821721206U CN209044021U CN 209044021 U CN209044021 U CN 209044021U CN 201821721206 U CN201821721206 U CN 201821721206U CN 209044021 U CN209044021 U CN 209044021U
- Authority
- CN
- China
- Prior art keywords
- circuit
- test
- light emitting
- connecting terminal
- led light
- 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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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
A kind of automobile circuit test lamp, including test circuit and circuit board, test circuit is made of two LED light emitting diodes, resistance and connecting terminal, the positive and negative opposite parallel connection of two LED light emitting diodes is in circuit, in one end series resistance of circuit, the other end of resistance connects connecting terminal one, connects connecting terminal two in the other end of circuit；Test circuit welding on circuit boards, circuit board is fixed on test lamp base, is tested on lamp base and is connected upper housing；When detecting the circuits of weak currents such as fuel injector, when there is one to shine in two LED light emitting diodes, illustrates that circuit-under-test has electric current to pass through, if two light emitting diodes do not shine, illustrate that circuit-under-test does not have electric current to pass through.The beneficial effects of the utility model are: structure is simple, easy to use, construction rationally, in vehicle inspection and maintenance, is also capable of detecting when whether its circuit is abnormal for the component of required electric current very little.
Description
Technical field
The utility model relates to a kind of automotive check and maintenance tool, especially a kind of automobile circuit test lamp.
Background technique
In vehicle inspection and maintenance, when suspecting circuit in the event of failure, generally go to detect with test lamp, it is relatively more straight in this way
It sees.But for the actuator or sensor of automotive control system, the general very little of operating current, such as fuel injector, ignition module
Driving signal, electric current all very littles in circuit even have in circuit if going to detect with traditional test lamp with filament
Electric current passes through, and test lamp will not shine, because traditional test lamp power is larger, the operating current needed is also larger, so,
Can not detect whether electronic equipment or electronic component or route damage in these circuits with traditional test lamp.
Summary of the invention
The utility model aiming at the problems existing in the prior art, is provided a kind of automobile circuit test lamp, is sent out using LED
Optical diode is shown obvious to detect the failure of the circuit because of operating current very little needed for LED light emitting diode.
The utility model includes test circuit and circuit board, tests circuit by two LED light emitting diodes, resistance and wiring
Terminal composition, two LED light emitting diodes it is positive and negative it is opposite it is in parallel in circuit, in one end series resistance of circuit, resistance it is another
One end connects connecting terminal one, connects connecting terminal two in the other end of circuit；Test circuit welding on circuit boards, circuit board
It is fixed on test lamp base, tests on lamp base and connect upper housing；Test lamp upper housing both ends open up U-shaped mouth, terminals
Son and LED light emitting diode are stretched out from U-shaped mouth；The test lamp base is connect with test lamp upper housing snap fit；It is described
Test lamp base and test lamp upper housing made of ambroin.
After adopting the above structure, when detecting the circuit of weak currents such as fuel injector, when having one in two LED light emitting diodes
It is a to shine, illustrate that circuit-under-test has electric current to pass through, if two light emitting diodes do not shine, illustrates that circuit-under-test does not have electric current
Pass through.
The beneficial effects of the utility model are: structure is simple, easy to use, construction is rationally, at low cost, is readily produced and pushes away
Extensively, in vehicle inspection and maintenance, whether its circuit is abnormal to be also capable of detecting when for the component of required electric current very little.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Fig. 2 is the utility model main view.
Fig. 3 is that the utility model removes upper housing main view.
Description of symbols
3-2,1-1, LED light emitting diode one, 1-2, LED light emitting diode two, 2, resistance, 3-1, connecting terminal one connect
Line terminals two, 4, circuit board, 5, fastening screw, 6, test lamp base, 7, upper housing.
Specific embodiment
As shown in Figure 1-Figure 3, in a kind of automobile circuit test lamp, including test circuit and circuit board, test circuit by
Two LED light emitting diodes, resistance and connecting terminal composition, one 1-1 and LED light emitting diode of LED light emitting diode, two 1-2
Positive and negative opposite parallel connection connects one 3-1 of connecting terminal in circuit, in the other end of one end series resistance 2 of circuit, resistance, in electricity
The other end on road connects two 3-2 of connecting terminal；Test circuit welding on the circuit board 4, circuit board is solid by four fastening screws 5
It is scheduled on test lamp base 6, tests and connect upper housing 7 on lamp base；Test lamp upper housing both ends open up U-shaped mouth, terminals
Son and LED light emitting diode are stretched out from U-shaped mouth；The test lamp base is connect with test lamp upper housing snap fit；It is described
Test lamp base and test lamp upper housing made of ambroin.
The purpose of two diodes in parallel is the current direction for not having to consider circuit when detecting, series resistance be because
The voltage of 12V in the unbearable automobile circuit of LED light emitting diode needs series resistance to share voltage, and the resistance value of resistance is big
About 330 Ω.
Case study on implementation: before the circuit of the weak currents such as detection fuel injector, following preparation is done: two test groups of production
Part.Each test suite by a test fingers, one with insulating sheath conducting wire, one with connecting terminal model phase
The four type banana plugs composition matched, test fingers and four type banana plugs, conducting wires can be bought, the test of test fingers
End has rectangular and two kinds of flat, can be selected according to the socket shape of tested component.Conducting wire one end and test fingers
Terminals connection, the other end is connect with four type banana plug terminals, in this way, two test suites complete.
When test, the banana plug of two test suites is inserted into two connecting terminals of test lamp respectively, two are surveyed
Test point foot test lead access circuit-under-test in, when have in LED light emitting diode one or LED light emitting diode two one shine,
Illustrate that circuit-under-test has electric current to pass through, if two light emitting diodes do not shine, illustrates that circuit-under-test does not have electric current to pass through.
The above, the only preferable specific embodiment of the utility model, but the protection scope of the utility model is simultaneously
Not limited to this, all those familiar with the art are in technical scope disclosed by the utility model, according to this reality
Being subject to equivalent substitution or change with the design of novel technical solution and its utility model should all cover in the utility model
Within protection scope.
Claims (3)
1. a kind of automobile circuit test lamp, including test circuit and circuit board, it is characterised in that: test circuit is sent out by two LED
Optical diode, resistance and connecting terminal composition, two LED light emitting diodes it is positive and negative on the contrary, it is in parallel in circuit, the one of circuit
Series resistance is held, the other end of resistance connects connecting terminal one, connects connecting terminal two in the other end of circuit；Test circuit weldering
It connects on circuit boards, circuit board is fixed on test lamp base, is tested on lamp base and is connected upper housing；Test lamp upper housing both ends
U-shaped mouth is opened up, connecting terminal and LED light emitting diode are stretched out from U-shaped mouth.
2. a kind of automobile circuit test lamp according to claim 1, it is characterised in that: the test lamp base and test
The connection of lamp upper housing snap fit.
3. a kind of automobile circuit test lamp according to claim 1, it is characterised in that: the test lamp base and test
Lamp upper housing makes of ambroin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821721206.3U CN209044021U (en) | 2018-10-13 | 2018-10-13 | A kind of automobile circuit test lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821721206.3U CN209044021U (en) | 2018-10-13 | 2018-10-13 | A kind of automobile circuit test lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209044021U true CN209044021U (en) | 2019-06-28 |
Family
ID=67037022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821721206.3U Expired - Fee Related CN209044021U (en) | 2018-10-13 | 2018-10-13 | A kind of automobile circuit test lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209044021U (en) |
-
2018
- 2018-10-13 CN CN201821721206.3U patent/CN209044021U/en not_active Expired - Fee Related
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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: 20190628 Termination date: 20211013 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |