Volume resistivity testing device
By designing an automated volume resistivity testing device, the problems of high risk of electric shock, inaccurate detection, and wire detachment in existing devices have been solved, thereby improving safety and accuracy and increasing testing efficiency.
Patent Information
- Application Number
- CN202422628203.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Existing volume resistivity testing devices have problems such as high risk of electric shock, inaccurate detection, and disconnection of wires. Furthermore, the unstable placement of the sample leads to large fluctuations in the data.
An automated volume resistivity testing device was designed, comprising a fixed base, a pressure plate, an input electrode, a driving component, and a signal receiver. The driving component automatically moves the input electrode to achieve stable contact between the sample and the electrode and accurate measurement of data.
It improves test safety and accuracy, reduces human error, increases test efficiency, and avoids the risk of electric shock and data fluctuations.
Smart Images
Figure CN223513277U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the test tool field, concretely relates to a volume resistivity testing device. BACKGROUND
[0002] The volume resistivity of the semiconductive shielding material is an important detection item for measuring the insulation performance of the wire and cable material. At present, the manual detection method is mainly used, and the process includes placing the sample, power detection, and taking out the tested sample, and each process is manually confirmed. In general, the existing detection method has the following defects:
[0003] The test personnel need to repeatedly take the sample to test the voltage and current of the sheet, and the whole action is a repeated mechanical action, and the more the action times, the higher the risk of electric shock;
[0004] During the test process, the contact pressure problem of the potential electrode and the test piece, each time the measurement is manually fixed by the screw, the contact state of the sample and the electrode cannot be guaranteed, and the data fluctuation is large or the test data is not displayed;
[0005] During the placement of the sample, the sample placement position and the electrode do not keep the vertical state, and the operation inconvenience in the fixing process will cause the risk of connection line falling off.
[0006] Therefore, it is necessary to improve the existing volume resistivity testing device to solve the above problems. UTILITY MODEL CONTENT
[0007] The utility model aims at providing a volume resistivity testing device to solve the problems of electric shock of the tester, inaccurate detection, and connection line falling off caused by the existing manual detection.
[0008] To achieve the above purpose, the utility model provides a volume resistivity testing device for testing the resistivity of the sample, which comprises:
[0009] A fixed base is provided with a plurality of partition plates at intervals to define a plurality of accommodation parts for accommodating the sample;
[0010] A pressing plate is used to press the sample in the accommodation part, the pressing plate is made of conductive material to be electrically connected with the sample, and the extension direction of the pressing plate is consistent with the interval direction of the partition plate;
[0011] An input electrode is used to electrically contact with the sample to input current;
[0012] A driving assembly is used to drive the input electrode to move to electrically connect with the sample;
[0013] The signal receiving member is electrically connected with both ends of the pressing plate to receive a detection signal.
[0014] As a further improvement of the utility model, the driving assembly includes a transverse movement driving member for driving the input electrode to move along the extension direction of the pressing plate, and a longitudinal driving member for driving the input electrode to vertically move along the height direction.
[0015] As a further improvement of the utility model, the driving assembly further includes a sliding block, the input electrode is arranged on the sliding block, the transverse movement driving member includes a transverse movement motor and a transverse movement screw rod, and the sliding block is sleeved on the transverse movement screw rod.
[0016] As a further improvement of the utility model, the longitudinal driving member includes a longitudinal motor and a longitudinal screw rod, the input electrode is fixed to one end of the longitudinal screw rod away from the longitudinal motor, the longitudinal screw rod penetrates through the sliding block along the vertical direction and is rotatably arranged relative to the sliding block.
[0017] As a further improvement of the utility model, the volume resistivity testing device further includes two limiting plates arranged above the fixed base, the two limiting plates are arranged in a spaced manner to form a limiting groove in the middle, the sliding block is arranged in the limiting groove, and the extending direction of the limiting groove is the direction in which the partition plates are arranged in a spaced manner.
[0018] As a further improvement of the utility model, the volume resistivity testing device further includes two support plates arranged in a spaced manner, and the support plates are fixedly connected with the limiting plates and the fixed base.
[0019] As a further improvement of the utility model, the volume resistivity testing device further includes a box body, the fixed base, the support plates and the limiting plates are all accommodated in the box body, and a door body is arranged on the box body.
[0020] As a further improvement of the utility model, the volume resistivity testing device further includes a direct-current stabilized power supply for supplying power to the input electrode, and the direct-current stabilized power supply is electrically connected with the input electrode.
[0021] As a further improvement of the utility model, the signal receiving member is a display screen.
[0022] As a further improvement of the utility model, one end of the pressing plate is pivotally connected with the fixed base, the pressing plate is made of a magnetic material, and a magnet for magnetically connecting with the other end of the pressing plate is arranged on the fixed base.
[0023] The beneficial effects of this utility model are: the volume resistivity testing device of this utility model is equipped with a driving component to automatically move the input electrode, which eliminates the risk of personnel contact with the power source and the influence of human factors on the measurement data through automation, thereby improving experimental safety and accuracy, and also improving experimental efficiency. Attached Figure Description
[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0025] Figure 1 This is a schematic diagram of the volume resistivity testing device of this utility model. Detailed Implementation
[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.
[0029] like Figure 1As shown, the volume resistivity testing device 100 of this utility model is used to test the resistivity of a sample. The volume resistivity testing device 100 of this embodiment is mainly used to measure the volume resistivity of semiconductive shielding materials, but it is not limited to this. Any material that can be processed into a suitable shape can be measured using the volume resistivity testing device 100 of this embodiment.
[0030] The volume resistivity testing device 100 includes a fixed base 1, a pressure plate 2, an input electrode 3, a drive assembly 4, a signal receiver 5, two limiting plates 6 disposed above the fixed base 1, two spaced support plates 7, a housing, and a DC regulated power supply 8 for supplying power to the input electrode 3.
[0031] The fixed base 1, support plate 7, and limiting plate 6 are all housed within the box. The box has a door for placing the sample inside for measurement. In some embodiments, the fixed base 1 can be the bottom of the box, the support plate 7 can be the side of the box, and the limiting plate 6 can be the top of the box. In this embodiment, the fixed base 1 and support plate 7 are independently installed, while the limiting plate 6 is the top of the box.
[0032] The fixed base 1 is provided with a plurality of partition plates 11 at intervals to define a plurality of receiving portions 12 for accommodating samples. In this embodiment, the fixed base 1 is plate-shaped and has limiting strips 13 at both ends. The partition plates 11 are spaced apart between two of the limiting strips 13. In this embodiment, there are four limiting strips 13, which cooperate with the limiting strips 13 on both sides to form five receiving portions 12.
[0033] Of course, if you want to test more samples at the same time, you can increase the number of limiting strips 13 and reduce the width of the sample, or increase the length of the fixed base 1.
[0034] The height of the partition plate 11 is the same as the height of the limiting strip 13, but slightly lower than the thickness of the sample. This ensures that the pressure plate 2 presses the sample tightly and is electrically connected to each sample. The partition plate 11 is made of a non-conductive material to avoid affecting the test results.
[0035] The pressure plate 2 is used to press the sample against the receiving part 12. The pressure plate 2 is made of conductive material so as to be electrically connected to the sample. The extending direction of the pressure plate 2 is consistent with the spacing direction of the partition plate 11.
[0036] One end of the pressure plate 2 is pivotally connected to the fixed base 1. The pressure plate 2 is made of magnetic material, and the fixed base 1 is provided with a magnet 14 for magnetic connection with the other end of the pressure plate 2. Specifically, one end of the pressure plate 2 is pivotally connected to a limiting strip 13 on one side of the fixed base 1, while a magnet 14 is provided on the other fixing strip. The magnet 14 attracts the pressure plate 2 to press the sample tightly, so that the pressure plate 2 and the sample are in contact.
[0037] In other embodiments, the pressure plate 2 can also be fixed in other ways to achieve the effect of resisting the sample, such as the cooperation of the slot and the buckle, the cooperation of the clamping part and the clamped part, the screw fixing cooperation, etc.
[0038] Furthermore, in this embodiment, there are two pressure plates 2, and the two pressure plates 2 are spaced apart along the extension direction of the partition plate 11. However, only one pressure plate 2 needs to be connected to the signal receiver 5 for signal output, while the other pressure plate 2 only serves as an auxiliary clamping device. The two pressure plates 2 can ensure a better clamping effect on the sample.
[0039] The input electrode 3 is used to make electrical contact with the sample to input current, and the DC regulated power supply 8 is electrically connected to the input electrode 3. The DC regulated power supply 8 is located outside the enclosure.
[0040] The signal receiver 5 is a display screen, which is electrically connected to both ends of the pressure plate 2 to receive detection signals and display the detection results.
[0041] The driving component 4 is used to drive the input electrode 3 to move to electrical connection with the sample. The driving component 4 is at least able to drive the input electrode 3 to move in two different directions: horizontally to contact different samples, and vertically to contact or move away from the sample.
[0042] The driving assembly 4 includes a transverse driving member for driving the input electrode 3 to move along the extension direction of the pressure plate 2, a longitudinal driving member for driving the input electrode 3 to move vertically along the height direction, and a slider 45.
[0043] The input electrode 3 is disposed on the slider 45, and the transverse drive includes a transverse motor 41 and a transverse lead screw 42, with the slider 45 sleeved on the transverse lead screw 42.
[0044] The longitudinal drive component includes a longitudinal motor 43 and a longitudinal lead screw 44. The input electrode 3 is fixed to the end of the longitudinal lead screw 44 away from the longitudinal motor 43. The longitudinal lead screw 44 passes through the slider 45 in a vertical direction and is rotatably disposed relative to the slider 45.
[0045] In this embodiment, a motor and a lead screw are used for driving. In other embodiments, a cylinder and a cylinder rod can also be used for driving.
[0046] Two limiting plates 6 are spaced apart to form a limiting groove 61 in the middle, and the slider 45 is disposed in the limiting groove 61. The limiting groove 61 extends in the same direction as the spaced partition plates 11.
[0047] The support plate 7 is fixedly connected to the limiting plate 6 and the fixed base 1, thereby providing a fixed support for the limiting plate 6.
[0048] The working process of the volume resistivity testing device 100 of this utility model is as follows:
[0049] First, open the chamber and place a set of 5 samples on the fixed base 1. Close the chamber and use magnet 14 to fix the pressure plate 2. Control the drive assembly 4. The input electrode 3 moves to above the sample position on one side under the action of the transverse drive component, and then descends to contact the sample surface under the action of the longitudinal drive component. Turn on the DC regulated power supply 8 and adjust the test current. The current is transmitted from the input electrode 3 through the test sample to both ends of the pressure plate 2 and output to the signal receiver 5. After 10 seconds, record stable data. The DC regulated power supply 8 stops outputting. The input electrode 3 rises under the action of the longitudinal drive component and moves to above the next sample under the action of the transverse drive component. Repeat the above steps. After the test of 5 samples is completed, the equipment stops operating.
[0050] The volume resistivity testing device 100 of this invention is equipped with a driving component 4 that automatically moves the input electrode 3. This automation eliminates the risk of personnel contact with the power source and the influence of human factors on the measurement data, thereby improving experimental safety and accuracy, as well as increasing experimental efficiency.
[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0052] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A volume resistivity testing device for testing the resistivity of a sample, characterized in that: The volume resistivity testing device includes: A fixed base, wherein multiple partition plates are spaced apart on the fixed base to define multiple receiving portions for receiving samples; A pressure plate is used to press the sample against the receiving part. The pressure plate is made of conductive material so as to be electrically connected to the sample. The extending direction of the pressure plate is consistent with the spacing direction of the partition plate. Input electrodes are used to make electrical contact with the sample to input current; A driving component for driving the input electrode to move to electrical connection with the sample; The signal receiver is electrically connected to both ends of the pressure plate to receive detection signals.
2. The volume resistivity testing device according to claim 1, characterized in that: The driving assembly includes a lateral driving member for driving the input electrode to move along the extension direction of the pressure plate, and a longitudinal driving member for driving the input electrode to move vertically along the height direction.
3. The volume resistivity testing device according to claim 2, characterized in that: The drive assembly further includes a slider, the input electrode is disposed on the slider, the transverse drive includes a transverse motor and a transverse lead screw, and the slider is sleeved on the transverse lead screw.
4. The volume resistivity testing device according to claim 3, characterized in that: The longitudinal drive component includes a longitudinal motor and a longitudinal lead screw. The input electrode is fixed to the end of the longitudinal lead screw away from the longitudinal motor. The longitudinal lead screw passes through the slider in a vertical direction and is rotatably disposed relative to the slider.
5. The volume resistivity testing device according to claim 3, characterized in that: The volume resistivity testing device also includes two limiting plates disposed above the fixed base. The two limiting plates are spaced apart to form a limiting groove in the middle. The slider is disposed in the limiting groove, and the extending direction of the limiting groove is the same as the direction in which the dividing plates are spaced apart.
6. The volume resistivity testing device according to claim 5, characterized in that: The volume resistivity testing device also includes two spaced-apart support plates, which are fixedly connected to the limiting plate and the fixed base.
7. The volume resistivity testing device according to claim 6, characterized in that: The volume resistivity testing device also includes a housing, in which the fixed base, support plate and limiting plate are all housed, and a door is provided on the housing.
8. The volume resistivity testing device according to claim 1, characterized in that: The volume resistivity testing device also includes a DC regulated power supply for supplying power to the input electrode, the DC regulated power supply being electrically connected to the input electrode.
9. The volume resistivity testing device according to claim 1, characterized in that: The signal receiver is a display screen.
10. The volume resistivity testing device according to claim 1, characterized in that: One end of the pressure plate is pivotally connected to the fixed base. The pressure plate is made of magnetic material, and the fixed base is provided with a magnet for magnetic connection with the other end of the pressure plate.