CN212031596U

CN212031596U - Simple ferrite core resistance measuring device

Info

Publication number: CN212031596U
Application number: CN201922357549.7U
Authority: CN
Inventors: 豆小明
Original assignee: A-CORE JIANGMEN ELECTRONICS CO LTD
Current assignee: A-CORE JIANGMEN ELECTRONICS CO LTD
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-11-27
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a simple and easy ferrite core resistance measuring device. The measuring device comprises a horizontal lower bottom plate, an adjusting device capable of adjusting the height is arranged above the lower bottom plate, and a horizontal upper pressing plate is arranged at the bottom of the adjusting device; the upper surface of the lower base plate and the lower surface of the upper pressure plate are both provided with conductive planes made of conductive materials, and the two conductive planes can be respectively contacted with two probes of the multimeter. The utility model provides a simple and easy ferrite core resistance measuring device can control and use comparatively suitable and stable pressure to compress tightly the ferrite core to the convenience is measured its resistance, has not only guaranteed the measuring accuracy, can also avoid the improper ferrite core that causes of pressure to damage, and because the unstable condition such as the resistance test result of leading to of pressure is inaccurate, easy operation, the effect is showing, has higher practicality.

Description

Simple ferrite core resistance measuring device

Technical Field

The utility model relates to an electrical equipment makes the field, in particular to simple and easy ferrite core resistance measuring device.

Background

In electrical experiments and applications, in manufacturing equipment such as transformers using ferrite core materials, measurement of the resistance of the ferrite core is often required. The existing professional measuring method comprises the following steps: polishing two surfaces of the ferrite core, cleaning the surface with ethanol and acetone, coating silver paste, drying at 100 ℃ for 0.5h, and measuring with a universal meter after the silver paste is fixed. The method has quite complex process, long time consumption, high cost and low efficiency, and especially when research personnel need to quickly compare the resistances of a group of a plurality of ferrite magnetic cores or production line quality inspection personnel carry out resistance sampling inspection on a batch of magnetic cores, the efficiency of the method cannot meet the requirements of production and processing.

In addition, there are some simpler and more convenient measurement methods, but there are also their respective disadvantages. For example, two probes of a multimeter are directly used for measuring the resistance between two equidistant points on the surface of a ferrite core, and the method is quick, but the error is often large, the measurement result is not accurate enough, and therefore the method is rarely used. For another example, a compression measurement method is adopted, in which a conductive material is used to compress a ferrite core, and a multimeter is used to measure the ferrite core through the conductive material, which avoids errors to some extent, but often cannot control the pressure applied to the ferrite core, thereby causing damage to the ferrite core due to improper pressure and inaccurate resistance test results due to unstable pressure.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a simple ferrite core resistance measuring device.

According to one aspect of the utility model, a simple ferrite core resistance measuring device is provided, which comprises a horizontal lower bottom plate, an adjusting device capable of adjusting the height is arranged above the lower bottom plate, and a horizontal upper pressing plate is arranged at the bottom of the adjusting device; the upper surface of the lower base plate and the lower surface of the upper pressure plate are both provided with conductive planes made of conductive materials, and the two conductive planes can be respectively contacted with two probes of the multimeter.

The utility model provides a simple and easy ferrite core resistance measuring device can control and use comparatively suitable and stable pressure to compress tightly the ferrite core to the convenience is measured its resistance, has not only guaranteed the measuring accuracy, can also avoid the improper ferrite core that causes of pressure to damage, and because the unstable condition such as the resistance test result of leading to of pressure is inaccurate, easy operation, the effect is showing, has higher practicality.

In some embodiments, the lower base plate is provided with a vertical connecting rod, and the adjusting device is directly or indirectly mounted on the connecting rod and can adjust the height. Thereby, the adjusting device can be installed through the connecting rod, and the height of the adjusting device is adjusted, thereby stably applying pressure.

In some embodiments, a horizontal limiting plate capable of adjusting the height is mounted on the connecting rod, and the adjusting device is movably mounted on the limiting plate. Thereby, the specific structure and the mode for installing the adjusting device are further arranged.

In some embodiments, the connecting rod is provided with a scale in the vertical direction. Therefore, the specific positions of the limiting plate and the adjusting device can be recorded through the scales, so that the same pressure is applied every time.

In some embodiments, the connecting rod is provided with a plurality of bolt holes in sequence in a vertical direction, and the limit plate is mounted on the connecting rod through one of the bolt holes. Thus, the positions of the limiting plate and the adjusting device can be adjusted through the plurality of bolt holes, so that proper pressure can be applied according to needs.

In some embodiments, the adjusting device comprises a vertical rod, the middle part of the vertical rod is movably mounted on the limiting plate, and the upper pressing plate is mounted at the bottom of the vertical rod. Thereby, the structure of the adjusting device is provided.

In some embodiments, a compression spring is sleeved on the vertical rod, and the upper end and the lower end of the compression spring are respectively in contact with the limiting plate and the upper pressing plate. Therefore, the specific structure of the adjusting device is further provided, so that the limiting plate can enable the upper pressure plate to generate pressure downwards through the compression spring.

In some embodiments, a handle is provided at the upper end of the vertical post. Therefore, the adjusting device can be lifted upwards through the lifting handle, so that the ferrite core can be conveniently taken and placed.

In some embodiments, the conductive plane is made of pure copper. Thereby, a suitable material for the conductive plane is provided.

Drawings

Fig. 1 is a schematic structural diagram of a simple ferrite core resistance measuring device according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of the simple connecting rod shown in FIG. 1;

fig. 3 is a schematic structural diagram of the simple adjusting device shown in fig. 1.

In the figure: the device comprises a lower bottom plate 1, an adjusting device 2, an upper pressure plate 3, a universal meter 4, a connecting rod 5, a limiting plate 6, a compression spring 7, a ferrite core 8, a vertical rod 21, a lifting handle 22, scales 51 and bolt holes 52.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Fig. 1 schematically shows a structure of a simple ferrite core resistance measuring apparatus according to an embodiment of the present invention, and fig. 2 shows a structure of a connection rod of the simple ferrite core resistance measuring apparatus of fig. 1; fig. 3 shows the structure of the adjustment device of the simple ferrite core resistance measuring device in fig. 1. As shown in fig. 1 to 3, the measuring device mainly comprises a horizontal lower base plate 1 and a horizontal upper press plate 3, the upper press plate 3 is positioned right above one end of the lower base plate 1, and the upper press plate 3 is mounted on the bottom of an adjusting device 2 capable of adjusting the height, and a ferrite core of a resistance to be measured can be clamped between the lower base plate 1 and the upper press plate 3. The upper surface of the lower base plate 1 and the lower surface of the upper pressing plate 3 are both provided with conductive planes made of conductive materials, and the two conductive planes can be respectively contacted with two probes of the universal meter 4. Preferably, the conductive plane is generally made of pure copper with a low resistance.

Preferably, a vertical connecting rod 5 is provided on the other end of the lower plate 1, and the adjusting means 2 is directly or indirectly mounted on the connecting rod 5 and is capable of adjusting the height.

Preferably, a horizontal limit plate 6 capable of adjusting the height is mounted on the connecting rod 5, and the adjusting device 2 is movably mounted on the limit plate 6. Wherein, limiting plate 6 can be on connecting rod 5 height-adjusting, and adjusting device 2 can carry out certain extent's motion in the vertical direction.

Preferably, the connecting rod 5 is provided with a scale 51 in the vertical direction. The specific position of the limiting plate 6 mounted at each time can be measured and recorded through the scale 51, and whether the mounting height of the limiting plate 6 is proper or not is judged visually.

Preferably, the connecting rod 5 is sequentially provided with a plurality of bolt holes 52 in a vertical direction, and the restriction plate 6 can be mounted on the connecting rod 5 through one of the bolt holes 52 at a time. The limiting plate 6 can be installed on a proper installation hole so that the upper pressure plate 3 can apply corresponding pressure to the ferrite core, and the specific heights of the limiting plate 6, the adjusting device 2 and the upper pressure plate 3 can be adjusted by replacing the limiting plate 6 on different installation holes so that the upper pressure plate 3 can apply different pressures to the ferrite core.

Preferably, the adjusting device 2 comprises a vertical rod 21, the middle part of the vertical rod 21 is movably mounted on the limiting plate 6 and can move along the limiting plate 6 in a certain range in the vertical direction, and the upper pressing plate 3 is arranged at the bottom of the vertical rod 21. Furthermore, it is also possible to envisage a direct movable mounting of the vertical rod 21 of the adjustment device 2 on the connecting rod 5 without using the limit plate 6.

The lower portion of the vertical rod 21 is sleeved with a compression spring 7, the upper end and the lower end of the compression spring 7 are respectively in contact with or connected with the limiting plate 6 and the upper pressing plate 3, and pressure can be applied to the upper pressing plate 3 through the compression spring 7.

Preferably, a handle 22 is provided at the upper end of the vertical rod 21, and the vertical rod 21 can be lifted up by the handle 22.

When the measuring device is used for measuring the resistance of the ferrite core 8, the adjusting device 2 is firstly pulled by the handle 22 to enable the upper pressing plate 3 to rise, the compression spring 7 is stressed and compressed, then the ferrite core 8 to be measured is placed on the lower base plate 1, the adjusting device 2 is lowered to enable the upper pressing plate 3 to fall, and the ferrite core 8 is clamped between the upper pressing plate and the lower base plate 1 under the action of the rebound force of the compression spring 7; the position heights of the limiting plate 6, the adjusting device 2 and the upper pressing plate 3 can be changed through the bolt holes 52 on the connecting rod 5, so that the pressure exerted by the upper pressing plate 3 and the lower pressing plate 1 on the ferrite core 8 can be adjusted. Then, two probes of the multimeter 4 are respectively contacted with each conductive plane, so that the resistance of the ferrite core 8 can be measured. After resistance measurement is performed on a plurality of ferrite cores 8 in the same batch, the position of the limiting plate 6 does not need to be changed again, and only the adjusting device 2 needs to be lifted and lowered through the lifting handle 22, so that different ferrite cores 8 can be switched on the measuring device and measurement can be performed in sequence, and the effect of batch measurement can be achieved.

What has been described above are only some embodiments of the invention. For those skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which are within the scope of the invention.

Claims

1. A simple ferrite core resistance measuring device is characterized in that: the device comprises a horizontal lower bottom plate (1), an adjusting device (2) capable of adjusting the height is arranged above the lower bottom plate (1), and a horizontal upper pressing plate (3) is arranged at the bottom of the adjusting device (2); the upper surface of the lower base plate (1) and the lower surface of the upper pressure plate (3) are both provided with conductive planes made of conductive materials, and the two conductive planes can be respectively contacted with two probes of a universal meter (4).

2. A simple ferrite core resistance measuring device according to claim 1, characterized in that: the lower bottom plate (1) is provided with a vertical connecting rod (5), and the adjusting device (2) is directly or indirectly arranged on the connecting rod (5) and can adjust the height.

3. A simple ferrite core resistance measuring device according to claim 2, characterized in that: install a horizontal limiting plate (6) that can height-adjusting on connecting rod (5), adjusting device (2) movable mounting be in on limiting plate (6).

4. A simple ferrite core resistance measuring device according to claim 2, characterized in that: the connecting rod (5) is provided with scales (51) in the vertical direction.

5. A simple ferrite core resistance measuring device according to claim 3, characterized in that: the connecting rod (5) is provided with a plurality of bolt holes (52) in the vertical direction in sequence, and the limiting plate (6) is installed on the connecting rod (5) through one of the bolt holes (52).

6. A simple ferrite core resistance measuring device according to claim 3, characterized in that: the adjusting device (2) comprises a vertical rod (21), the middle of the vertical rod (21) is movably mounted on the limiting plate (6), and the upper pressing plate (3) is mounted at the bottom of the vertical rod (21).

7. A simple ferrite core resistance measuring device according to claim 6, characterized in that: the vertical rod (21) is sleeved with a compression spring (7), and the upper end and the lower end of the compression spring (7) are respectively in contact with the limiting plate (6) and the upper pressing plate (3).

8. A simple ferrite core resistance measuring device according to claim 6, characterized in that: the upper end of the vertical rod (21) is provided with a handle (22).

9. A simple ferrite core resistance measuring device according to any one of claims 1 to 8, characterized in that: the conductive plane is made of pure copper.