CN205193138U - Voltage drop testing arrangement - Google Patents

Abstract

The utility model relates to a testing arrangement's technical field, more specifically relates to a voltage drop testing arrangement. A voltage drop testing arrangement, wherein includes base, the electric current of locating the base both ends are applyed anchor clamps, activity and are located a plurality of voltage measurement anchor clamps on the base, connect through the connecting rod between a plurality of voltage measurement anchor clamps of. The utility model discloses the structure of slide bar ledger line ear can realize the conductor in the various lines of clamping footpath, and the stability of contact surface, apply weight and realize applying constant pressure, base forked tail tongue structure realizes changing at any time the measuring distance, use the measurement anchor clamps for stablizing stationary contact point, the contact is good, improves adapted equipment precision and realizes the improvement precision, the connecting rod is realized raising the efficiency, makes things convenient for the clamping.

Description

A voltage drop test device

technical field

The utility model relates to the technical field of testing devices, in particular to a voltage drop testing device.

Background technique

Existing voltage drop test scheme, the sample is manually clamped from the power cord led out from the power supply, the length of the test sample is determined according to the table mark, the sample is fixed by adhesive tape or other heavy objects, when measuring the sample, the detection head of the handheld detection instrument moves to the sample detection position Process reads data.

In the existing technical conditions, the voltage drop test power supply of domestic companies has fully reached or even exceeded the standard requirements to reach the μA level, and the test nanovoltmeter accuracy has also reached the μV level. But basically, the voltage drop is tested by traditional manual clamping. According to the traditional manual clamping test experience, our test accuracy can only reach 1mV, and the value fluctuation is relatively large. That is to say, we have good instrument conditions but fail to achieve the proper test accuracy. This is undoubtedly a waste of resources and also causes some test deviations.

In addition, the traditional manual clamping test has too many disadvantages. First, the voltage drop test in the QCT29106-2004 standard requires the sample to be kept fixed during the test, but manual clamping is difficult to ensure that the sample does not shift during the test. Second, the manual clamping test cannot guarantee the contact area between the conductor and the fixture during the test, and the contact area between the meter pen of the tester and the sample conductor. Third, manual clamping cannot guarantee the pressure value exerted by the fixture and test instrument pen on the sample conductor, and experience tells us that the pressure value directly affects the accuracy of the test.

That is to say, there are too many uncertainties to test the voltage drop of the conductor with the traditional manual clamping, which affects the test accuracy, and requires the tester to have certain experience, which is time-consuming and laborious.

Contents of the invention

The utility model provides a voltage drop testing device for overcoming at least one defect described in the above-mentioned prior art, which can improve the test accuracy of the conductor voltage drop (contact resistance) test in the automobile wiring harness test, reduce experimental errors, Improve testing efficiency.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a voltage drop test device, which includes a base, current applying fixtures arranged at both ends of the base, and a plurality of voltage clamps movable on the base. The measuring fixture is connected by connecting rods among multiple voltage measuring fixtures.

The utility model fully complies with the voltage drop test requirements in the automotive wire harness voltage drop test standards such as standards QCT417.1-2001 and QCT29106-2004. The device is applied to the voltage drop detection of wire harnesses with pressure connectors such as automotive wire harnesses and electronic product wire harnesses. It will provide a stable test condition for voltage drop testing, such as contact area, contact pressure and accurate test length. At the same time, connecting rods are also provided to improve test efficiency.

In the utility model, the number of voltage measurement fixtures is 4, and the four voltage measurement fixtures (four test point fixtures) are connected by connecting rods, so as to realize the clamping in one action.

Further, the voltage measurement fixture includes a fixture base connected to the base, a fixed contact arranged on the fixture base, and a measuring movable contact, the measuring movable contact is arranged on the upper part of the fixed contact; the upper part of the measuring movable contact A slide bar is provided, and a weight fixing shaft is arranged on the slide bar.

Each voltage measurement fixture is opened and closed by a sliding rod, and a weight is attached to realize convenient opening and closing, and the pressure is constant.

Further, the contact surface between the measuring movable contact and the fixed contact is arc-shaped with a radius of 20-40mm. The material of the contact part of the measuring movable contact and the fixed contact is red copper. The measuring moving contact is equipped with a plug-in terminal that can be easily connected to other measuring instruments (such as nanovoltmeters, digital multimeters), such as 4mm banana plug sockets. The slide bar is made of insulating material, and the diameter of the weight fixing shaft is 3-10mm. The clamp base is also insulating.

Further, the clamp base is a dovetail groove structure, and the clamp base is slidably connected with the base. The dovetail groove facilitates the movement of the fixture.

Further, a ruler is also provided on the base. The base is mainly made of insulating material, equipped with a scale of 0.5m or more, which is convenient for determining the test length.

Compared with the prior art, the beneficial effect is: the structure of the sliding bar and the wire lug of the utility model can realize the clamping of conductors of various wire diameters and the stability of the contact surface; the weight of the weight is applied to realize the constant pressure; the base The dovetail convex groove structure can change the test distance at any time; the measuring fixture is used as a stable and fixed contact point, and the contact is good, and the precision of the matching equipment can be improved to improve the accuracy; the connecting rod can improve the efficiency and facilitate clamping.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic structural diagram of the voltage measuring fixture of the present invention.

detailed description

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate this embodiment, certain components in the accompanying drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable that some well-known structures and descriptions thereof may be omitted in the drawings. The positional relationship described in the drawings is for illustrative purposes only, and should not be construed as a limitation on this patent.

As shown in Figures 1 and 2, a voltage drop test device includes a base 1, current applying fixtures 3 arranged at both ends of the base 1, and a plurality of voltage measuring fixtures 4 movable on the base 1 , a plurality of voltage measuring fixtures 4 are connected through connecting rods 5 .

The utility model fully complies with the voltage drop test requirements in the automotive wire harness voltage drop test standards such as standards QCT417.1-2001 and QCT29106-2004. The device is applied to the voltage drop detection of wire harnesses with pressure connectors such as automotive wire harnesses and electronic product wire harnesses. It will provide a stable test condition for voltage drop testing, such as contact area, contact pressure and accurate test length. At the same time, connecting rods are also provided to improve test efficiency.

In this embodiment, the number of voltage measurement fixtures 4 is four, and the four voltage measurement fixtures (four test point fixtures) are connected by means of connecting rods 5 to realize one action to complete the clamping.

The voltage measurement fixture 4 includes a fixture base 10 connected to the base 1, a fixed contact 7 arranged on the fixture base 10, and a measuring movable contact 6, and the measuring movable contact 6 is arranged on the top of the fixed contact 7; the measuring movable contact The upper part of point 6 is provided with a slide bar 8, and the slide bar 8 is provided with a weight fixing shaft 9.

Each voltage measurement fixture 4 is opened and closed in the form of a sliding bar, and is attached with a weight placement position, so as to realize convenient opening and closing and constant pressure.

The contact surface of the measuring movable contact 6 and the fixed contact 7 is an arc with a radius of 20-40mm. The material of the contact portion between the measuring movable contact 6 and the fixed contact 7 is red copper.

The measuring movable contact 6 is equipped with a plug-in terminal that can be easily connected to other measuring instruments (such as a nanovoltmeter, a digital multimeter), such as a socket of a 4mm banana plug. The slide bar 8 is an insulating material, and the diameter of the weight fixing shaft 9 is 3-10mm. The clamp base is also insulating.

The fixture base 10 is a dovetail groove structure, and the fixture base 10 is slidably connected with the base 1 . A ruler 2 is also provided on the base 1 . The dovetail groove facilitates the movement of the fixture. The base 1 is mainly made of insulating material, and equipped with a scale of more than 0.5m, which is convenient for determining the test length. The device realizes convenient clamping of conductors with various wire diameters; realizes the stability of the contact surface between the device and the wire; realizes that the device exerts constant pressure on the wire; realizes the random change of the test distance; realizes the improvement of test accuracy and efficiency.

Apparently, the above-mentioned embodiments of the present utility model are only examples for clearly illustrating the present utility model, rather than limiting the implementation manner of the present utility model. For those of ordinary skill in the art, other changes or changes in different forms can be made on the basis of the above description. It is not necessary and impossible to exhaustively list all the implementation manners here. All modifications, equivalent replacements and improvements made within the spirit and principles of the utility model shall be included in the protection scope of the claims of the utility model.

Claims (6)

1. a fall-of potential test device, it is characterized in that, comprise pedestal (1), be located at that the electric current at pedestal (1) both ends applies fixture (3), multiple voltage measurement fixtures (4) on pedestal (1) are located in activity, connected by connecting rod (5) between multiple voltage measurement fixture (4).

2. a kind of fall-of potential test device according to claim 1, it is characterized in that: described voltage measurement fixture (4) comprise be connected with pedestal (1) clamp base (10), the fixed contact (7) be located in clamp base (10), measure moving contact (6), measure moving contact (6) and be located at the top of fixed contact (7); Measure moving contact (6) top and be provided with slide bar (8), slide bar (8) is provided with counterweight stationary shaft (9).

3. a kind of fall-of potential test device according to claim 2, is characterized in that: described measurement moving contact (6) and the surface of contact of fixed contact (7) are the arc of radius 20-40mm.

4. a kind of fall-of potential test device according to claim 3, is characterized in that: described measurement moving contact (6) and the contact site material of fixed contact (7) are red copper.

5. a kind of fall-of potential test device according to claim 4, is characterized in that: described clamp base (10) is oat tail groove structure, and clamp base (10) and pedestal (1) are slidably connected.

6., according to the arbitrary described a kind of fall-of potential test device of claim 1 to 5, it is characterized in that: described pedestal (1) is also provided with scale (2).