CN217931818U

CN217931818U - Capacitance measuring device

Info

Publication number: CN217931818U
Application number: CN202221129339.8U
Authority: CN
Inventors: 黎良波
Original assignee: Panasonic Electronic Devices Jiangmen Co Ltd
Current assignee: Panasonic Electronic Devices Jiangmen Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-11-29
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses an electric capacity measuring equipment relates to electric capacity measurement technical field. The display device comprises a rack, a first electrode, a second electrode, a display device, a first clamping block and a second clamping block. The frame comprises a first driving device; the first electrode and the second electrode are both connected to the frame and can be electrically connected with the capacitor to measure the capacitance of the capacitor; the display device is electrically connected with the first electrode and the second electrode and is used for displaying the capacitance of the capacitor; the first clamping block is connected with the first driving device in a driving mode, the second clamping block is connected to the rack, and the first driving device can drive the first clamping block and the second clamping block to be matched with each other to clamp the capacitor. Adopt the utility model discloses an electric capacity measuring equipment need not the handheld condenser of user and measures electric capacity, can improve measuring efficiency.

Description

Capacitance measuring device

Technical Field

The utility model relates to an electric capacity measurement technical field especially relates to an electric capacity measuring equipment.

Background

Two conductors close to each other with a layer of non-conductive insulating medium in between constitute the capacitor. When a voltage is applied across the two plates of the capacitor, the capacitor stores charge. The capacitance of the capacitor is numerically equal to the ratio of the amount of charge on one conductive plate to the voltage between the two plates. In the prior art, the capacitor is usually held by a worker to measure the capacity in a factory, and the efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a capacitance measuring equipment can the rapid survey measure the electric capacity of condenser, need not handheld measurement, improves measurement of efficiency.

According to the utility model discloses capacitance measuring equipment for the electric capacity of detection capacitor, the condenser has first pin and second pin, and capacitance measuring equipment includes:

a frame including a first driving device;

the first electrode is connected with the first pin, and the second electrode is connected with the second pin so as to measure the capacitance of the capacitor;

a display device electrically connected to the first electrode and the second electrode, the display device for displaying a capacitance of the capacitor;

the capacitor clamping device comprises a first clamping block and a second clamping block, wherein the first clamping block is in driving connection with a first driving device, the second clamping block is connected to the rack, and the first driving device can drive the first clamping block to move so as to be matched with the second clamping block to clamp the capacitor.

According to the utility model discloses electric capacity measuring equipment has following beneficial effect at least:

the capacitor is placed on the second clamping block, and the first clamping block moves towards the direction close to the second clamping block under the driving of the first driving device, so that the capacitor is clamped by matching with the second clamping block. And then the first electrode and the second electrode are electrically connected with the capacitor, and the measured capacitance is displayed by a display device, so that a user can conveniently determine the capacity of the capacitor according to the displayed parameters, and further judge whether the capacitor is qualified. Adopt the utility model discloses a capacitance measuring equipment need not the handheld condenser of user and measures, can improve measuring efficiency, especially needs batch measurement's occasion.

According to some embodiments of the present invention, the first clamping block is rotatably connected to the first driving device, and the first clamping block protrudes along a plurality of directions to form a plurality of first positioning blocks with different widths; the second clamping blocks are rotatably connected to the rack, the second clamping blocks protrude in multiple directions to form multiple second positioning blocks for placing the capacitors, the second positioning blocks can be correspondingly matched with the first positioning blocks to clamp the capacitors, and the width of each first positioning block is the same as that of the corresponding matched second positioning block.

According to some embodiments of the utility model, the second locating piece is provided with and is used for restricting the limiting plate of condenser position.

According to some embodiments of the utility model, the second locating piece have can with the locating surface of condenser butt, the locating surface is provided with and is used for placing the arc wall of condenser.

According to some embodiments of the present invention, the first clamping block is rotatably connected to the first driving device, and the first clamping block protrudes along a plurality of directions to form a plurality of first positioning blocks; the second clamping blocks are rotatably connected to the rack, the second clamping blocks respectively protrude in multiple directions to form second positioning blocks for placing the capacitors, the second positioning blocks can be matched with the first positioning blocks to clamp the capacitors, and the protruding heights of the second positioning blocks are different.

According to some embodiments of the invention, the second clamping block is provided with a locking device for limiting the rotation of the second positioning block.

According to some embodiments of the invention, the frame comprises a second driving arrangement in driving connection with at least one of the first electrode and the second electrode close to or away from the capacitor.

According to some embodiments of the present invention, the first electrode and the second electrode are spaced apart from each other along the axial direction of the first electrode, and the second driving device is drivingly connected to the first electrode and the second electrode, so that the first electrode and the second electrode are close to or away from each other.

According to some embodiments of the utility model, the first electrode with the second electrode all includes connecting rod, electrode tip and buffer spring, the one end of connecting rod with the frame is connected, the other end of connecting rod passes through buffer spring with the electrode tip is connected.

According to some embodiments of the invention, the first electrode has a conductor made of a copper alloy material.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

fig. 1 is a schematic diagram of an overall structure of a measurement setup provided by an embodiment of the present invention;

fig. 2 is a schematic view of a first clamping block and a second clamping block according to an embodiment of the present invention;

fig. 3 is a simplified schematic diagram of a capacitance measuring device according to an embodiment of the present invention;

fig. 4 is a schematic view of a second clamping block according to another embodiment of the present invention;

fig. 5 is an enlarged schematic view at a in fig. 1.

Reference numerals:

a capacitance measuring device 1000;

a frame 100; a first driving device 110; a fixed base 111; a sliding seat 112; a chute 113;

a first electrode 200; a connecting rod 210; an electrode terminal 220; a buffer spring 230;

a second electrode 300;

a first clamp block 400; a first positioning block 410;

a second clamping block 500; a second locating block 510; a positioning surface 511; an arc-shaped slot 512; a stopper plate 520; a locking device 530; a fixing member 531; a bolt 532;

a display device 600;

a capacitor 2000.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the directional descriptions, such as the directions or positional relationships indicated by upper, lower, front, rear, left, right, etc., are based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but not for indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 5, for the embodiment of the present invention provides a schematic diagram of capacitance measuring device 1000, capacitance measuring device 1000 can measure the capacitance of capacitor 2000, and convenience of customers judges whether the capacitance is qualified or not or whether a fault occurs according to the capacitance. Taking the measurement of the axial capacitor 2000 as an example, the two ends of the axial capacitor 2000 are respectively a first pin and a second pin.

Referring to fig. 1, in an embodiment of the present invention, a capacitance measuring apparatus 1000 includes: the display device includes a chassis 100, a first electrode 200, a second electrode 300, a display device 600, a first clamping block 400, and a second clamping block 500. The frame 100 includes a first driving device 110, the first driving device 110 is connected to the first clamping block 400, and the second clamping block 500 is connected to the frame 100. The first driving device 110 can drive the first clamping block 400 to move in the vertical direction so that the first clamping block 400 can approach the second clamping block 500, thereby clamping the axial capacitor 2000. The first electrode 200 and the second electrode 300 are both connected to the housing 100, and the first electrode 200 and the second electrode 300 can be electrically connected to the axial capacitor 2000 to measure the capacitance of the axial capacitor 2000. The display device 600 is electrically connected to the first electrode 200 and the second electrode 300, so that the measured capacitance is displayed on a screen, and it is convenient for an employee to judge whether the axial capacitor 2000 is qualified according to the capacitance value.

Note that, in order to measure the axial capacitor 2000, referring to fig. 1, the first electrode 200 and the second electrode 300 are spaced apart from each other along the axial direction of the first electrode 200, the first electrode 200 is located on one side of the first clamping block 400, and the second electrode 300 is located on the other side of the first clamping block 400. It should be noted that the first electrode 200 and the second electrode 300 may also be: the first electrode 200 and the second electrode 300 are spaced apart in a direction perpendicular to the first electrode 200. The appropriate scheme is selected according to actual conditions, and the utility model is not limited in detail herein.

Referring to fig. 2, in an embodiment of the present invention, the first driving device 110 includes a fixed base 111, a sliding base 112, and a motor (not shown in the figure). The fixed seat 111 is fixedly connected to the frame 100, and the fixed seat 111 is provided with two sliding chutes 113; the sliding seat 112 is connected to two sliding grooves 113 of the fixed seat 111 in a sliding manner, and the sliding grooves 113 play a guiding role; the first clamping block 400 is connected to the lower end of the sliding seat 112; the motor may be connected to the rack 100 or the fixing base 111, and the motor may drive the sliding base 112 to slide in the up-down direction in a rack-and-pinion manner, so as to drive the first clamping block 400 to move in the up-down direction, so as to clamp or loosen the axial capacitor 2000. It should be noted that, in other embodiments of the present invention, the sliding seat 112 may be driven by an oil cylinder or an air cylinder instead of the motor, and a suitable scheme is selected according to actual conditions, which is not specifically limited herein.

Referring to fig. 1, it can be understood that the display device 600 may be fixedly coupled to the chassis 100; the device can also be placed on the rack 100 and can be moved at any position, so that the device is convenient to use under different conditions; or on another supporting platform, and is connected with the first electrode 200 and the second electrode 300 through cables. The utility model discloses the suitable scheme of selecting according to actual conditions, the utility model discloses no longer specifically limits here.

It can be understood that, in order to enable the first electrode 200 and the second electrode 300 to better fit the first pin and the second pin, the axial length of the axial capacitor 2000 is generally required to be greater than the width of the second positioning block 510, that is, two ends of the axial capacitor 2000 protrude from the second positioning block 510. Due to the different lengths of the different axial capacitors 2000, for example two capacitors 2000 of different sizes in fig. 2 and 3. In order to improve the versatility of the capacitance measuring apparatus 1000, referring to fig. 2 and 3, the first clamping block 400 protrudes in four directions to form four first positioning blocks 410 with different widths, which correspond to four types of axial capacitors 2000. Widths of the four first positioning blocks 410 are W1, W2, W3, and W4, respectively, and the definition of the widths of the first positioning blocks 410 is shown in fig. 3. The second clamping block 500 protrudes in four directions to form four second positioning blocks 510 with different widths, the widths of the second positioning blocks 510 are W5, W6, W7 and W8, respectively, and the definition of the width of the second positioning blocks 510 is shown in fig. 3. The widths of the four second positioning blocks 510 are the same as the widths of the four first positioning blocks 410, for example, the first positioning block 410 having a width W1 corresponds to the second positioning block 510 having a width W5; the first positioning block 410 with the width W2 corresponds to the second positioning block 510 with the width W6; the first positioning block 410 with the width W3 corresponds to the second positioning block 510 with the width W7; the first positioning block 410 having a width W4 corresponds to the second positioning block 510 having a width W8. It can be understood that the axial capacitors 2000 with different lengths can be conveniently detected by the cooperation of the first positioning block 410 and the second positioning block 510 with different widths and sizes. For example, the first positioning block 410 having a longer width is used to detect the axial capacitor 2000 having a longer length; the first positioning block 410 having a smaller width is used to detect the axial capacitor 2000 having a shorter length.

It is understood that there are many types of axial capacitors 2000, and that the size and shape of the different types of axial capacitors 2000 may vary. Since the positions of the first electrode 200 and the second electrode 300 are usually not changed at will or can only be moved in a certain direction. Therefore, when measuring the axial capacitors 2000 having different sizes, the first electrode 200 and the second electrode 300 cannot fit the first lead and the second lead of the axial capacitor 2000. In order to improve the versatility of the capacitance measuring apparatus 1000, as shown in fig. 2 and 3, the first clamping block 400 protrudes in four directions to form four first positioning blocks 410, which can correspond to four types of axial capacitors 2000. The second clamping block 500 is also protruded along four directions to form a second positioning block 510 correspondingly matched with the first positioning block 410. Referring to fig. 3, the heights of the plurality of second positioning blocks 510 in the protruding direction are H1, H2, H3, and H4, respectively, and the heights of the different second positioning blocks 510 are different. It is understood that the second positioning blocks 510 with different heights are used to place different types of axial capacitors 2000. For example, the axial capacitor 2000 with a larger volume is placed on the second positioning block 510 with a smaller height; the axial capacitor 2000 with a smaller volume is placed on the second positioning block 510 with a higher height, so that the axis of the axial capacitor 2000 coincides with the first electrode 200 and the second electrode 300 as much as possible, the measurement effect is ensured, and the universality of the capacitance measurement device 1000 is improved. It should be noted that the number of the first positioning blocks 410 may also be 2, 3, 5, etc.; the number of the secondary positioning blocks 510 may also be 2, 3, 5, etc. The number is selected as appropriate according to actual conditions, and the embodiment is not particularly limited here.

In order to facilitate switching between different first positioning blocks 410, referring to fig. 2, in an embodiment of the present invention, the first clamping block 400 is rotatably connected to the first driving device 110. The rotating connection may be that the first clamping block 400 is provided with a through hole, the first driving device 110 is provided with a rotating shaft, and the rotating shaft penetrates through the through hole, so that the first clamping block 400 is rotatably connected with the first driving device 110, and the angle of the first clamping block 400 can be adjusted by hand. The utility model discloses an in another embodiment, the mode of rotating the connection can also be: the first driving device 110 is provided with a motor (not shown in this embodiment), and the first clamping block 400 is connected with a driving shaft of the motor. The automation of the capacitance measuring device 1000 is improved by the control of the motor. The embodiment is not particularly limited herein, and a suitable scheme is selected according to actual conditions. It can be understood that when different first positioning blocks 410 are needed, the first clamping block 400 is rotated to switch the needed first positioning blocks 410.

In order to facilitate switching between different second positioning blocks 510, referring to fig. 2, in an embodiment of the present invention, the second clamping block 500 is rotatably connected to the frame 100. The rotation connection can be that second clamp splice 500 is provided with the through-hole, and frame 100 is provided with the pivot, and the through-hole is worn to locate by the pivot to make second clamp splice 500 rotate with frame 100 and be connected, can adjust through the hand when needing the angle of adjustment second clamp splice 500. The utility model discloses an in another embodiment, the mode of rotating the connection can also be: the frame 100 is provided with a motor, and the first clamping block 400 is connected to a driving shaft of the motor. The automation of the capacitance measuring device 1000 is improved by the control of the motor. The embodiment is not particularly limited herein, and a suitable scheme is selected according to actual conditions. It can be understood that when a different second positioning block 510 is needed, the second positioning block 510 can be switched conveniently by rotating the second clamping block 500.

The first positioning block 410 and the second positioning block 510 need to be fixed in position after rotation, which facilitates measurement of the capacity of the axial capacitor 2000. In the embodiment of the present invention, the first clamping block 400 is provided with a locking device 530 (this scheme is not shown in the figure), and the locking device 530 is used to fix the position of the first clamping block 400. The locking device 530 may include a bolt 532, and the bolt 532 is threadedly coupled and can be inserted through the first clamp block 400. When the position of the first clamping block 400 needs to be fixed, the bolt 532 is rotated to a position where the bolt abuts against the frame 100 or the first driving device 110, so as to fix the position of the first clamping block 400; when the first clamping block 400 needs to be rotated and switched to a different first positioning block 410 to measure the capacitance, the bolt 532 is rotated in the opposite direction, so that the bolt 532 is separated from the rack 100 or the first driving device 110. It should be noted that the locking device 530 can also be formed by a positioning pin and a positioning hole (this solution is not shown in the figure). For example, the positioning pin is inserted into the first clamping block 400 and connected to the positioning hole, so as to fix the position of the first clamping block 400; when the first clamping block 400 needs to be rotated, the positioning pin can be pulled out, and the rotation can be facilitated.

Referring to fig. 2, in the embodiment of the present invention, the second clamping block 500 is provided with a locking device 530, and the locking device 530 includes a fixing member 531 and a bolt 532. The fixing member 531 is fixedly connected to the frame 100; the bolt 532 is screwed and passes through the fixing member 531, and the bolt 532 is used for limiting the rotation of the second clamping block 500. When the position of the second clamping block 500 needs to be fixed, the bolt 532 is rotated to the position abutting against the second positioning block 510, so as to fix the position of the second clamping block 500; when the second clamping block 500 needs to be rotated to switch to a different second positioning block 510 for measuring capacitance, the bolt 532 is rotated in the opposite direction, so that the bolt 532 is separated from the second positioning block 510.

Referring to fig. 2, in an embodiment of the present invention, the second positioning block 510 is provided with a limiting plate 520, the limiting plate 520 is located at one side close to the rack 100, and the limiting plate 520 is used for limiting the displacement of the axial capacitor 2000 and can also play a role in positioning. It can be understood that when the capacitance of the axial capacitor 2000 needs to be measured, the limiting plate 520 can block the axial capacitor 2000 from further moving closer to the rack 100 when the axial capacitor 2000 is placed on the second positioning block 510. In another embodiment of the present invention, the limiting plate 520 may have two and all set on the second positioning block 510. The two limiting plates 520 are arranged at intervals, and the middle of the two limiting plates is used for placing the axial capacitor 2000. By means of the two limiting plates 520, the displacement of the axial capacitor 2000 can be further limited.

Referring to fig. 3, in an embodiment of the present invention, the upper end surface of the second positioning block 510 is a positioning surface 511, the positioning surface 511 is provided with an arc-shaped groove 512, the arc-shaped groove 512 is used for placing the axial capacitor 2000, and the arc-shaped groove 512 can limit the displacement of the axial capacitor 2000 and prevent the axial capacitor from falling off due to rolling. In other embodiments, the positioning surface 511 may extend obliquely toward the limiting plate 520 and toward the rotation center of the second clamping block 500 (not shown). It can be understood that the positioning surface 511 can abut against the capacitor 2000, and the inclined arrangement can guide the capacitor 2000 to move towards the direction close to the limiting plate 520, so as to reduce the risk that the capacitor 2000 falls off and improve the use experience of the capacitance measuring device 1000.

In an embodiment of the present invention, the frame 100 comprises a second driving device (the second driving device is not shown in the drawings), and the second driving device drives at least one of the first electrode 200 and the second electrode 300. For example, the second driving device is connected to the first electrode 200; the second driving device is connected with the second electrode 300 in a driving way; the second driving device has two driving units, which are respectively connected to the first electrode 200 and the second electrode 300. Taking the driving connection between the first electrode 200 and the second electrode 300 as an example, the second driving device can drive the first electrode 200 and the second electrode 300 to approach or separate from each other, so that the first electrode 200 is attached to the first lead and the second electrode 300 is attached to the second lead; the latter is to separate the first electrode 200 from the first lead and the second electrode 300 from the second lead. It can be understood that, because the axial capacitors 2000 have different lengths, the first electrode 200 and the second electrode 300 are movably disposed, so that different types of axial capacitors 2000 can be conveniently measured, and the universality of the capacitance measuring apparatus 1000 is improved. The first electrode 200 and the second electrode 300 are driven by the second driving device, so that the automation degree of the capacitance measuring device 1000 can be improved, and the measuring efficiency can be improved.

Referring to fig. 5, in an embodiment of the present invention, at least one of the first electrode 200 and the second electrode 300 includes a connection rod 210, an electrode tip 220, and a buffer spring 230. One end of the connecting rod 210 is fixedly connected to the frame 100, and the other end of the connecting rod 210 is connected to the electrode terminal 220 through a buffer spring 230. It can be understood that the electrode terminal 220 is electrically connected to the measuring terminal of the axial capacitor 2000, and when the electrode terminal 220 is pressed, the electrode terminal can move in a direction away from the axial capacitor 2000 under the action of the buffer spring 230, so as to avoid an excessive pressure when the first electrode 200 and the second electrode 300 press the axial capacitor 2000, thereby damaging the axial capacitor 2000 and improving the safety of the axial capacitor 2000. It should be noted that the first electrode 200 may include a connection rod 210, an electrode tip 220, and a buffer spring 230; the second electrode 300 may also include a connection rod 210, an electrode tip 220, and a buffer spring 230; it is also possible that the first electrode 200 and the second electrode 300 each include a connection bar 210, an electrode tip 220, and a buffer spring 230. And selecting a proper scheme according to actual conditions.

In the embodiment of the present invention, the first electrode 200 and the second electrode 300 have conductors made of copper alloy material. It can be understood that the copper alloy material has excellent conductivity, and can reduce the loss of electric energy and improve the measurement accuracy.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A capacitance measuring device for detecting a capacitance of a capacitor, the capacitor having a first pin and a second pin, the capacitance measuring device comprising:

a frame including a first driving device;

2. The capacitance measuring device according to claim 1, wherein the first clamping block is rotatably connected to the first driving device, and the first clamping block protrudes in multiple directions to form a plurality of first positioning blocks with different widths; the second clamping blocks are rotatably connected to the rack, the second clamping blocks protrude in multiple directions to form multiple second positioning blocks for placing the capacitors, the second positioning blocks can be correspondingly matched with the first positioning blocks to clamp the capacitors, and the width of each first positioning block is the same as that of the corresponding matched second positioning block.

3. The capacitance measuring apparatus according to claim 2, wherein the second positioning block is provided with a stopper plate for restricting the position of the capacitor.

4. The capacitance measuring device of claim 2, wherein the second positioning block has a positioning surface that can abut against the capacitor, the positioning surface being provided with an arc-shaped slot for placing the capacitor.

5. The capacitance measuring device of claim 1, wherein the first clamping block is rotatably connected to the first driving device, and the first clamping block protrudes in a plurality of directions to form a plurality of first positioning blocks; the second clamping blocks are rotatably connected to the rack, the second clamping blocks respectively protrude in multiple directions to form second positioning blocks for placing the capacitors, the second positioning blocks can be matched with the first positioning blocks to clamp the capacitors, and the protruding heights of the second positioning blocks are different.

6. Capacitance measuring device according to claim 2 or 5, wherein the second clamping block is provided with a locking means for limiting the rotation of the second positioning block.

7. A capacitance measurement device according to claim 1, wherein the housing includes a second drive arrangement which drives at least one of the first and second electrodes towards or away from the capacitor.

8. The capacitance measuring device according to claim 7, wherein the first electrode and the second electrode are spaced apart from each other in an axial direction of the first electrode, and the second driving means is drivingly connected to the first electrode and the second electrode so as to move the first electrode and the second electrode toward or away from each other.

9. The capacitance measurement device of claim 1, wherein the first electrode and the second electrode each comprise a connecting rod, an electrode end, and a buffer spring, one end of the connecting rod is connected to the frame, and the other end of the connecting rod is connected to the electrode end through the buffer spring.

10. The capacitance measuring device of claim 1, wherein the first electrode has a conductor made of a copper alloy material.