Resistance measuring device for ferrite processing

Abstract

The utility model relates to the technical field of ferrite processing, in particular to a resistance measuring device for ferrite processing, which comprises a base, a pressing piece and two conductive contacts, and is characterized in that the base is provided with a placing plane for placing ferrite; the pressing piece is movably arranged above the base in the vertical direction perpendicular to the containing plane. The two conductive contacts are arranged on the pressing piece in a spaced mode in the transverse direction perpendicular to the vertical direction, the two conductive contacts are connected through a double-end lead screw made of non-conductive materials so that the distance between the two conductive contacts in the transverse direction can be adjusted, and the two conductive contacts can be connected with two probes of a universal meter respectively. According to the utility model, through the cooperative use of the base, the pressing piece and the two conductive contacts, multiple groups of resistance data of the ferrite can be measured and obtained, and the average resistance value of the ferrite can be obtained by integrating the multiple groups of resistance data, so that the measurement precision is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of ferrite processing technology, specifically to a resistance measuring device for ferrite processing. Background Technology

[0002] In the manufacturing process of ferrite core materials, accurate measurement of their resistance value is crucial. Existing technologies, such as the simplified ferrite core resistance measuring device disclosed in Chinese Utility Model Patent Application No. CN201922357549.7, provide a solution. This simplified device can control and apply a suitable and stable pressure to compress the ferrite core, facilitating resistance measurement. It not only ensures measurement accuracy but also avoids damage to the ferrite core caused by unsuitable pressure or inaccurate resistance test results due to unstable pressure. The device is simple to operate, highly effective, and has high practicality.

[0003] However, in practical applications, the aforementioned simple ferrite core resistance measuring device has certain limitations. Specifically, it can only measure the distance between two surfaces of the ferrite, meaning it can only obtain one set of resistance data. This single resistance measurement method may lead to significant measurement errors and cannot fully reflect the resistance characteristics of the ferrite core material. To address these issues, this invention proposes a resistance measuring device for ferrite processing. Utility Model Content

[0004] The purpose of this invention is to provide a resistance measuring device for ferrite processing, which solves the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution:

[0006] A resistance measuring device for ferrite processing includes a base, a clamping member, and two conductive contacts. The base has a placement plane for placing ferrite. The clamping member is movably disposed above the base in a vertical direction perpendicular to the placement plane. The two conductive contacts are arranged on the clamping member at a lateral distance perpendicular to the vertical direction. The two conductive contacts are connected by a double-ended lead screw made of a non-conductive material, so that the lateral distance between the two conductive contacts is adjustable, and the two conductive contacts can be connected to two probes of a multimeter.

[0007] Optionally, the clamping member is provided with a groove, and the two conductive contacts pass through the groove and come into contact with the ferrite.

[0008] Optionally, each of the conductive contacts includes an annular body and an O-shaped resilient pin, the annular body being threadedly connected to the double-ended lead screw, and the resilient pin passing through the groove and contacting the ferrite.

[0009] Optionally, a terminal block is fixedly provided on the annular body, and the probe of the multimeter is fixed to the terminal block by screws.

[0010] Optionally, an indicator needle is fixedly provided on the annular body of at least one of the conductive contacts, and a length ruler that cooperates with the indicator needle is fixedly installed on the clamping member along the transverse direction.

[0011] Optionally, the elastic stylus has a two-layer structure, namely an inner elastic layer and an outer conductive layer.

[0012] Optionally, the inner elastic layer is made of spring steel, and the outer conductive layer is made of copper or aluminum.

[0013] Optionally, a bracket is fixedly installed above the base, and the clamping member includes a rod that is elastically connected to the bracket and a clamping part fixedly disposed at the lower end of the rod. The double-ended lead screw is rotatably connected to the rod, and the clamping part is provided with the sliding groove.

[0014] Optionally, the bracket is provided with a socket, the upper end of the rod passes through the socket, a limiting member is provided on the rod located below the bracket, and a spring is provided between the limiting member and the bracket, the spring being sleeved on the rod.

[0015] Optionally, the limiting member is a ring structure, and the limiting member is threadedly connected to the rod.

[0016] Compared with the prior art, this utility model provides a resistance measuring device for ferrite processing, which has the following beneficial effects:

[0017] 1. This utility model, through the combined use of the base, clamping component and two conductive contacts, can measure and obtain multiple sets of resistance data of ferrite. By combining multiple sets of resistance data, the average resistance value of ferrite can be obtained, thereby effectively improving the measurement accuracy.

[0018] 2. Each conductive contact of this invention includes an annular body and an O-shaped elastic pin. The annular body is threadedly connected to a double-ended lead screw, and the pin passes through a groove to contact the ferrite. By utilizing the elastic properties of the elastic pin, the contact between the conductive contact and the ferrite surface can be made tighter, thereby improving conductivity.

[0019] 3. The elastic stylus of this utility model includes an inner elastic layer and an outer conductive layer. The inner elastic layer ensures that the elastic stylus has excellent elastic deformation characteristics, while the outer conductive layer improves the electrical conductivity between the elastic stylus and the ferrite.

[0020] 4. The limiting component of this utility model has a ring-shaped structure, and the limiting component is threadedly connected to the rod. By adjusting the position of the limiting component on the rod, the clamping component can fix ferrite of different thicknesses and ensure that a constant pressure is applied during the fixing process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0022] Figure 2 This is a front view structural diagram of the present invention;

[0023] Figure 3 This is a partial three-dimensional structural schematic diagram of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the clamping component of this utility model;

[0025] Figure 5 This is a schematic diagram of the double-ended lead screw and conductive contact structure of this utility model.

[0026] In the diagram: 10, base; 11, placement plane; 20, clamping component; 21, rod; 22, clamping part; 220, slide groove; 23, limiting component; 24, spring; 30, conductive contact; 31, ring body; 32, elastic contact pin; 320, inner elastic layer; 321, outer conductive layer; 33, terminal block; 34, screw; 40, double-ended lead screw; 50, multimeter; 51, probe; 60, indicator pin; 61, length ruler; 70, bracket; 80, ferrite. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example: Please refer to Figures 1 to 5 According to an embodiment of the present invention, a resistance measuring device for ferrite processing is provided, comprising a base 10, a clamping member 20, and two conductive contacts 30. The base 10 has a placement plane 11 for placing ferrite 80; the clamping member 20 is movably disposed above the base 10 in a vertical direction perpendicular to the placement plane 11. Figure 2 In the middle, the vertical direction is up and down; two conductive contacts 30 are arranged at intervals on the clamping member 20 along a horizontal direction perpendicular to the vertical direction. Figure 2In the middle, the horizontal direction is left and right. The two conductive contacts 30 are connected by a double-ended lead screw 40 made of non-conductive material. Specifically, the two ends of the double-ended lead screw 40 are provided with two sets of threads with opposite directions. The two conductive contacts 30 are respectively connected to these two sets of threads so that the distance between the two conductive contacts 30 in the horizontal direction can be adjusted. The two conductive contacts 30 can be connected to the two probes 51 of the multimeter 50 respectively.

[0029] The resistance measuring device for ferrite processing using the above-described structure places the ferrite 80 to be tested on the positioning surface of the base 10, and then operates the clamping member 20 to fix the ferrite 80. At this time, the two conductive contact points on the clamping member 20 are in contact with the surface of the ferrite 80. After starting the multimeter 50, the resistance value of the ferrite 80 between these two conductive contact points can be measured. If multiple sets of resistance data are needed, the distance between the two conductive contact points can be repeatedly adjusted using the double-ended lead screw 40, and the resistance values ​​at different distances can be recorded. In this way, multiple sets of resistance data can be obtained. Since the distance between the two conductive contact points can be accurately measured using measuring tools, the resistance value per unit length of the ferrite 80 can be calculated. By combining multiple sets of resistance data, the average resistance value of the ferrite 80 can be obtained, effectively improving the measurement accuracy.

[0030] In this exemplary embodiment, a groove 220 is provided on the clamping member 20, and the two conductive contacts 30 pass through the groove 220 and come into contact with the ferrite 80. By providing the groove 220, the rotation of the conductive contacts 30 can be effectively restricted, so as to prevent unnecessary rotation of the conductive contacts 30 during the process of adjusting the distance between the two conductive contacts 30 using the double-ended lead screw 40, thereby ensuring the accuracy of the adjustment process.

[0031] In this exemplary embodiment, each conductive contact 30 includes an annular body 31 and an O-shaped resilient pin 32. The annular body 31 is threadedly connected to a double-ended lead screw 40, and the resilient pin 32 passes through a groove 220 to contact the ferrite 80. By utilizing the elastic properties of the resilient pin 32, the contact between the conductive contact 30 and the surface of the ferrite 80 can be made more compact, thereby improving conductivity.

[0032] In this exemplary embodiment, a terminal block 33 is fixedly provided on the annular body 31, and the probe 51 of the multimeter 50 is fixed to the terminal block 33 by a screw 34 to facilitate the connection between the probe 51 and the conductive contact 30.

[0033] In this exemplary embodiment, an indicator needle 60 is fixedly disposed on the annular body 31 of at least one conductive contact 30, and a length ruler 61 cooperating with the indicator needle 60 is fixedly mounted on the clamping member 20 along the lateral direction. By using the indicator needle 60 and the length ruler 61 in cooperation, the distance that the conductive contact 30 moves laterally can be obtained more accurately, thereby facilitating the calculation of the distance between two conductive contacts 30.

[0034] In this exemplary embodiment, the elastic stylus 32 has a two-layer structure: an inner elastic layer 320 and an outer conductive layer 321. The inner elastic layer 320 can be made of spring steel 24, and the outer conductive layer 321 can be made of copper or aluminum. The inner elastic layer 320 ensures that the elastic stylus 32 possesses excellent elastic deformation characteristics, while the outer conductive layer 321 improves the electrical conductivity between the elastic stylus 32 and the ferrite 80.

[0035] In this exemplary embodiment, a bracket 70 is fixedly mounted on the upper part of the base 10. The clamping member 20 includes a rod 21 elastically connected to the bracket 70 and a clamping part 22 fixedly disposed at the lower end of the rod 21. A double-ended lead screw 40 is rotatably connected to the rod 21, and a sliding groove 220 is provided on the clamping part 22. Further, the bracket 70 is provided with an insertion hole, and the upper end of the rod 21 passes through the insertion hole. A limiting member 23 is provided on the rod 21 located below the bracket 70, and a spring 24 is provided between the limiting member 23 and the bracket 70, with the spring 24 sleeved on the rod 21. With this configuration, when preparing for the ferrite 80 resistance measurement, the clamping member 20 must first be lifted upwards so that the clamping part 22 of the clamping member 20 maintains a certain distance from the base 10, at which time the spring 24 is in a compressed state. After ensuring sufficient space between the clamping part 22 and the base 10 to accommodate the ferrite 80, place the ferrite 80 between the base 10 and the clamping part 20. Then, release the clamping part 20; under the elastic force of the spring 24, the clamping part 20 will tightly adhere to the ferrite 80, ensuring that the ferrite 80 is firmly fixed to the base 10. Through this series of operations, the fixing of the ferrite 80 can be quickly completed, preparing for subsequent resistance measurements.

[0036] In this exemplary embodiment, the limiting member 23 is an annular structure, and the limiting member 23 is threadedly connected to the rod portion 21. By adjusting the position of the limiting member 23 on the rod portion 21, the clamping member 20 can fix ferrite 80 of different thicknesses and ensure that a constant pressure is applied during the fixing process.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A resistance measuring device for ferrite processing, characterized in that, include: The base (10) has a placement plane (11) for placing the ferrite (80); The clamping member (20) is movably disposed above the base (10) in a vertical direction perpendicular to the placement plane (11); Two conductive contacts (30) are arranged at a lateral interval perpendicular to the vertical direction on the clamping member (20). The two conductive contacts (30) are connected by a double-ended lead screw (40) made of non-conductive material so that the lateral distance between the two conductive contacts (30) is adjustable, and the two conductive contacts (30) can be connected to the two probes (51) of the multimeter (50).

2. The resistance measuring device for ferrite processing according to claim 1, characterized in that: The clamping member (20) is provided with a groove (220), and the two conductive contacts (30) pass through the groove (220) and come into contact with the ferrite (80).

3. The resistance measuring device for ferrite processing according to claim 2, characterized in that: Each of the conductive contacts (30) includes an annular body (31) and an O-shaped resilient pin (32), the annular body (31) being threaded to the double-ended lead screw (40), and the resilient pin (32) passing through the groove (220) and contacting the ferrite (80).

4. The resistance measuring device for ferrite processing according to claim 3, characterized in that: A terminal block (33) is fixedly provided on the annular body (31), and the probe (51) of the multimeter (50) is fixed to the terminal block (33) by screws (34).

5. The resistance measuring device for ferrite processing according to claim 3, characterized in that: An indicator needle (60) is fixedly provided on the annular body (31) of at least one of the conductive contacts (30), and a length ruler (61) for use with the indicator needle (60) is fixedly installed on the clamping member (20) in the transverse direction.

6. The resistance measuring device for ferrite processing according to claim 3, characterized in that: The elastic stylus (32) has a two-layer structure, namely an inner elastic layer (320) and an outer conductive layer (321).

7. The resistance measuring device for ferrite processing according to claim 6, characterized in that: The inner elastic layer (320) is made of spring (24) steel, and the outer conductive layer (321) is made of copper or aluminum.

8. The resistance measuring device for ferrite processing according to any one of claims 2 to 7, characterized in that: A bracket (70) is fixedly installed above the base (10). The clamping member (20) includes a rod (21) elastically connected to the bracket (70) and a clamping part (22) fixedly disposed at the lower end of the rod (21). The double-ended lead screw (40) is rotatably connected to the rod (21). The groove (220) is provided on the clamping part (22).

9. The resistance measuring device for ferrite processing according to claim 8, characterized in that: The bracket (70) is provided with a socket, and the upper end of the rod (21) passes through the socket. A limiting member (23) is provided on the rod (21) located below the bracket (70). A spring (24) is provided between the limiting member (23) and the bracket (70), and the spring (24) is sleeved on the rod (21).

10. The resistance measuring device for ferrite processing according to claim 9, characterized in that: The limiting member (23) is a ring structure, and the limiting member (23) is threadedly connected to the rod (21).

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