CN219105133U

CN219105133U - On-off tester

Info

Publication number: CN219105133U
Application number: CN202221063171.5U
Authority: CN
Inventors: 胡建林
Original assignee: Suzhou Dedi Electronic Technology Co ltd
Current assignee: Suzhou Dedi Electronic Technology Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2023-05-30
Anticipated expiration: 2032-05-06

Abstract

The utility model discloses an on-off tester which comprises a testing box body, a circuit component, a first testing end and a second testing end, wherein the first testing end and the second testing end extend out of the surface of the testing box body, the circuit component is arranged in the testing box body, the circuit component comprises a power supply BT, a resistor R, a capacitor C, a loudspeaker BZ and a grounding end GND, the negative electrode of the power supply BT is connected with the first testing end, the positive electrode of the power supply BT is connected with the first end of the resistor R, the positive plate of the capacitor C is connected with the second end of the resistor R, the negative plate of the capacitor C is connected with the grounding end GND, the positive plate of the capacitor C is connected with one end of the loudspeaker BZ, the other end of the loudspeaker BZ is connected with the grounding end GND, and the second testing end is connected with the grounding end GND. The utility model solves the technical problems of low wire harness testing efficiency and low safety.

Description

On-off tester

Technical Field

The utility model relates to an electric vehicle wire harness testing component, in particular to an on-off tester.

Background

The function of the head part of the electric vehicle is centralized, the electric vehicle comprises an electric vehicle instrument panel wire harness, a control wire harness, an electric vehicle lamp wire harness and the like, and the wiring quality of the head part of the electric vehicle plays an important role in the function of the whole vehicle. Because the pencil is more, the pencil needs to test the break-make condition of pencil before fixed on the drum to appear the pencil broken string after avoiding the pencil to fix and influence wiring quality, pencil test among the prior art needs the operation workman to put the pencil in the circuit and put through and measure, and the pencil test finishes and removes the back from the circuit, the both ends of pencil and circuit contact portion can produce great voltage mutation, cause the harm to test circuit's performance, and because the test in-process, circuit element is more scattered, when test position change, inconvenient removal, inefficiency and security are not high, therefore need a device that can safe and efficient test pencil break-make.

Disclosure of Invention

The embodiment of the utility model provides an on-off tester, which effectively solves the technical problems of low testing efficiency and low safety of a wire harness.

In order to solve the technical problems, the embodiment of the utility model discloses an on-off tester which comprises a testing box body, a circuit component, a first testing end and a second testing end, wherein the first testing end and the second testing end extend out of the surface of the testing box body, the circuit component is arranged in the testing box body, the circuit component comprises a power supply BT, a resistor R, a capacitor C, a loudspeaker BZ and a grounding end GND, the negative electrode of the power supply BT is connected with the first testing end, the positive electrode of the power supply BT is connected with the first end of the resistor R, the positive plate of the capacitor C is connected with the second end of the resistor R, the negative plate of the capacitor C is connected with the grounding end GND, the positive plate of the capacitor C is connected with one end of the loudspeaker BZ, the other end of the loudspeaker BZ is connected with the grounding end GND, and the second testing end is connected with the grounding end GND.

Further, the circuit assembly further comprises a switch, wherein the switch comprises a button, and the button protrudes out of the surface of the test box body.

Further, the switch further comprises a wire holder, one end of the wire holder is connected with the positive electrode of the power supply BT, and the other end of the wire holder is connected with the first end of the resistor R.

Further, the circuit assembly further comprises a double-base diode, an emitter E of the double-base diode is connected with a positive plate of the capacitor C, a second base b2 of the double-base diode is connected with a positive electrode of the power supply BT, and a first base b1 of the double-base diode is connected with one end of the horn BZ.

Further, the circuit assembly further comprises an indicator lamp, wherein the indicator lamp comprises a housing and a light emitting diode, the housing is arranged on the surface of the test box body, and the light emitting diode is arranged in the housing.

Further, one end of the light emitting diode is connected with the positive plate of the capacitor C, and the other end of the light emitting diode is connected with the grounding end GND.

Further, the on-off tester further comprises a red meter pen and a black meter pen, the red meter pen and the black meter pen extend out of the test box body, the red meter pen is connected with the first test end, and the black meter pen is connected with the second test end.

The implementation of the utility model has the following beneficial effects:

the on-off tester comprises a test box body, a circuit component, a first test end and a second test end, wherein the first test end and the second test end extend out of the surface of the test box body, the circuit component is arranged in the test box body, the circuit component comprises a power supply BT, a resistor R, a capacitor C, a loudspeaker BZ and a grounding end GND, the negative electrode of the power supply BT is connected with the first test end, the positive electrode of the power supply BT is connected with the first end of the resistor R, the positive plate of the capacitor C is connected with the second end of the resistor R, the negative plate of the capacitor C is connected with the grounding end GND, the positive plate of the capacitor C is connected with one end of the loudspeaker BZ, the other end of the loudspeaker BZ is connected with the grounding end GND, the second test end is connected with the grounding end GND, through the connection among all the components of the circuit assembly, when the two ends of the wire harness are respectively connected with the first test end and the second test end, if the wire harness has no wire breakage condition, the loudspeaker BZ emits sound, if the wire harness has wire breakage condition, the loudspeaker BZ does not emit sound, the arrangement of the capacitor C can avoid the voltage at the two ends of the loudspeaker BZ from generating abrupt change, the reliability of the loudspeaker BZ in the multiple test process is ensured, the test box body is convenient to be arranged to move according to the test requirement of the on-off tester, the first test end and the second test end extend out of the surface of the test box body, the two ends of the wire harness are respectively connected with the first test end and the second test end to form a loop so as to judge whether the wire harness is broken, the efficiency of the wire harness on-off operation is improved, the judgment accuracy is also ensured, the operation safety is ensured, the reliability of the test circuit is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an on-off tester according to an embodiment of the present utility model.

Fig. 2 is a schematic circuit diagram of a circuit assembly according to an embodiment of the utility model.

Wherein, the reference numerals in the figures correspond to: 1-test box, 2-first test end, 3-second test end, 4-switch.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby a feature defining "first," "second," or the like, may explicitly or implicitly include one or more of such features, and in the description of the present utility model, "a plurality" means two or more, unless otherwise specifically limited.

Fig. 1 is a schematic structural diagram of an on-off tester according to an embodiment of the present utility model, as shown in fig. 1, the on-off tester includes a test box 1, a circuit component, a first test end 2 and a second test end 3, the first test end 2 and the second test end 3 extend from the surface of the test box 1, the circuit component is disposed in the test box 1, fig. 2 is a schematic structural diagram of the circuit component according to an embodiment of the present utility model, as shown in fig. 2, the circuit component includes a power BT, a resistor R, a capacitor C, a loudspeaker BZ and a ground end GND, a negative electrode of the power BT is connected to the first test end 2, a positive electrode of the power BT is connected to the first end of the resistor R, a positive electrode of the capacitor C is connected to the second end of the resistor R, a negative electrode of the capacitor C is connected to the ground end GND, a positive electrode of the capacitor C is connected to one end of the loudspeaker BZ, and the other end of the loudspeaker BZ is connected to the ground end GND, and the second test end 3 is connected to the ground end GND. When the both ends of pencil respectively with first test end 2 with second test end 3 is connected, if the pencil does not have the broken string condition, then loudspeaker BZ sounds, if the pencil has the broken string condition, then loudspeaker BZ does not sound, electric capacity C's setting can avoid loudspeaker BZ both ends's voltage to take place the mutation, guaranteed loudspeaker BZ at the multiple test in-process reliability, and first test end 2 and second test end 3 all stretch out the surface of test box 1, make things convenient for the break-make tester to remove the position according to the test needs, also make things convenient for the both ends of pencil to be connected with first test end 2 and second test end 3 respectively and form the return circuit, whether judge the pencil broken string, the efficiency of the pencil break-make operation of production line judgement has been improved, the accuracy of judgement has also been guaranteed, the security of operation has been guaranteed.

In an embodiment of the present utility model, with continued reference to fig. 1, the circuit assembly further includes a switch 4, the switch 4 including a button, the button protruding from a surface of the test case 1. Through the setting of button, operating personnel can be after the both ends of pencil link to each other with first test end 2 and second test end 3 respectively, open after switch 4, just can form the return circuit, carry out pencil break-make test, avoided the potential safety hazard that leads to because of contact failure or electric leakage in the pencil test process, promoted the security, guaranteed test circuit's reliability.

In the embodiment of the present utility model, with continued reference to fig. 1, the switch 4 further includes a wire holder, one end of the wire holder is connected to the positive electrode of the power BT, the other end of the wire holder is connected to the first end of the resistor R, and the button is pressed and popped to respectively connect and disconnect the positive electrode of the power BT with the first end of the resistor R, so as to control the opening and closing of the circuit, thereby facilitating the operation and improving the safety performance in the on-off test.

In the embodiment of the present utility model, with continued reference to fig. 1 and 2, the circuit assembly further includes a double-base diode, an emitter E of the double-base diode is connected to the positive plate of the capacitor C, a second base b2 of the double-base diode is connected to the positive electrode of the power supply BT, a first base b1 of the double-base diode is connected to one end of the horn BZ, and since the second base is connected to the positive electrode of the power supply BT, the first base b1 is connected to the ground GND through the horn BZ, and a voltage division reference is generated between the first base b1 and the second base b2 due to the existence of an equivalent resistor, and the voltage division reference is a midpoint voltage, so that a time interval for the horn BZ to emit sound can be adjusted through a charge-discharge process of the capacitor C. Specifically, after two ends of the wire harness are respectively connected with the first test end 2 and the second test end 3 to form a loop, the power supply BT charges the capacitor C through the resistor R, the voltage on the capacitor C gradually rises along with the extension of charging time, when the voltage on the capacitor C is greater than the midpoint voltage between the first base b1 and the second base b2, the emitter E and the first base b1 are conducted, a path is formed between the capacitor C, the emitter E, the first base b1 and the loudspeaker BZ, when the capacitor C is conducted along with the path, the voltage at two ends of the capacitor C rapidly drops in the sounding work and power consumption process of the loudspeaker BZ, and when the voltage value on the capacitor C is lower than the midpoint voltage between the first base b1 and the second base b2, the loop cut-off between the emitter E and the first base b1 is in a cut-off state, and the loudspeaker has no sound. The capacitor C enters the charging process again, thus the beeping tone is repeatedly realized, and the tone color of the beeping tone can be changed by adjusting the parameters of R1 and C1. From this, can realize the both ends of pencil link to each other with first test end 2 and second test end 3 respectively and form the return circuit after, loudspeaker BZ can send the beeping sound, makes things convenient for the operator to judge the break-make condition of pencil, and when loudspeaker BZ can send the sound, the pencil does not have the broken string condition, and when loudspeaker BZ can not send the sound, the pencil exists the risk of broken string, needs further verification.

In an embodiment of the present utility model, the circuit assembly further includes an indicator light, where the indicator light includes a light emitting diode, one end of the light emitting diode is connected to the positive plate of the capacitor C, and the other end of the light emitting diode is connected to the ground GND. Through the setting of pilot lamp, after pencil, first test end 2 and second test end 3 link to each other, after opening switch 4, after forming the return circuit, the pilot lamp just can switch on, conveniently judges the break-make of pencil through the bright dark condition of pilot lamp, specifically, when the pilot lamp shines, the instruction return circuit switches on, and the pencil has formed the return circuit with first test end 2 and second test end 3 links to each other, and the pencil does not have the circuit break. When the indicator light does not emit light and the loudspeaker BZ does not sound, the loop is not conducted, the loop is not formed by the wire harness, the first test end 2 and the second test end 3, and the wire harness is in open circuit risk. The on-off condition of the wire harness can be judged more clearly by observing the brightness of the indicator lamp.

In the embodiment of the utility model, the indicator lamp further comprises a housing, the housing is arranged on the surface of the test box body 1, the light emitting diode is arranged in the housing, and the housing can protect the light emitting diode and prolong the service life.

In the embodiment of the utility model, the on-off tester further comprises a red meter pen and a black meter pen, the red meter pen and the black meter pen extend out of the test box body 1, the red meter pen is connected with the first test end 2, the black meter pen is connected with the second test end 3, and the red meter pen and the black meter pen can be directly and respectively electrically connected with two ends of the wire harness when in use, so that the convenience and safety of operation are improved.

The implementation of the utility model has the following beneficial effects:

the utility model discloses an on-off tester, which comprises a test box body 1, a circuit assembly, a first test end 2 and a second test end 3, wherein the first test end 2 and the second test end 3 extend out of the surface of the test box body 1, the circuit assembly is arranged in the test box body 1, the circuit assembly comprises a power supply BT, a resistor R, a capacitor C, a loudspeaker BZ and a grounding end GND, the negative electrode of the power supply BT is connected with the first test end 2, the positive electrode of the power supply BT is connected with the first end of the resistor R, the positive plate of the capacitor C is connected with the second end of the resistor R, the negative plate of the capacitor C is connected with the grounding end GND, the positive plate of the capacitor C is connected with one end of the loudspeaker BZ, the other end of the loudspeaker BZ is connected with the grounding end GND, and the two ends of a wire harness are respectively connected with the first test end 2 and the second test end 3 through the connection between all components of the circuit assembly, and the sound harness is conveniently judged to be connected with the second test end 3, and the sound harness is conveniently connected with the second test end 3 if the sound harness is not required to be connected with the second test end 3, and the sound harness is not required to be connected with the sound harness, and the sound testing end is not required to be detected, and the sound testing end is not required to be connected with the sound testing end.

The foregoing disclosure is only illustrative of the preferred embodiments of the present utility model and is not to be construed as limiting the scope of the utility model, which is defined by the appended claims.

Claims

1. The utility model provides an on-off tester, its characterized in that, including test box (1), circuit subassembly, first test end (2) and second test end (3), first test end (2) with second test end (3) are all followed the surface of test box (1) stretches out, circuit subassembly set up in test box (1), circuit subassembly includes power BT, resistance R, electric capacity C, loudspeaker BZ and ground terminal GND, power BT's negative pole with first test end (2) are connected, power BT's positive pole with resistance R's first end is connected, electric capacity C's positive plate with resistance R's second end is connected, electric capacity C's negative plate with ground terminal GND is connected, electric capacity C's positive plate with loudspeaker BZ's one end is connected, loudspeaker BZ's the other end with ground terminal GND is connected, second test end (3) with ground terminal GND is connected.

2. The on-off tester according to claim 1, characterized in that the circuit assembly further comprises a switch (4), the switch (4) comprising a button, the button protruding from the surface of the test case (1).

3. The on-off tester according to claim 2, wherein the switch (4) further comprises a wire holder, one end of the wire holder is connected to the positive electrode of the power supply BT, and the other end of the wire holder is connected to the first end of the resistor R.

4. The on-off tester according to claim 1, wherein the circuit assembly further comprises a double-base diode, an emitter E of the double-base diode is connected with a positive plate of the capacitor C, a second base b2 of the double-base diode is connected with a positive electrode of the power supply BT, and a first base b1 of the double-base diode is connected with one end of the horn BZ.

5. The on-off tester according to claim 1, wherein the circuit assembly further comprises an indicator light, the indicator light comprising a housing and a light emitting diode, the housing being provided on the surface of the test case (1), the light emitting diode being provided in the housing.

6. The on-off tester according to claim 5, wherein one end of the light emitting diode is connected to a positive plate of the capacitor C, and the other end of the light emitting diode is connected to the ground GND.

7. The on-off tester according to claim 1, further comprising a red stylus and a black stylus, both extending from the test case (1), the red stylus being connected to the first test end (2) and the black stylus being connected to the second test end (3).