A kind of high-low temperature test tooling fixture for pulse MLCC capacitor

Abstract

The utility model discloses a kind of for pulse MLCC capacitor high-low temperature test tool fixture, it is related to pulse MLCC capacitor detection technical field.The tool fixture for pulse MLCC capacitor high-low temperature test of the utility model includes lower shell and upper cover, the inside hollow of the lower shell is arranged, the upper cover is hinged in the side of the lower shell top, the top of the lower shell is fixedly connected with product placing table, the top of the product placing table is provided with placing groove for placing product, one of the groove wall of the placing groove is provided with multiple sliding slots along horizontal direction, clamp is arranged in the sliding slot, one end of the clamp is placed in the sliding slot, guide rod is arranged in the sliding slot, guide rod is fixedly connected in the sliding slot, guide rod is inserted on clamp and both slidingly connected, and spring is sleeved on the guide rod, one end of spring is fixedly connected with guide rod, the other end of spring is fixedly connected with clamp, brake assembly is arranged on the clamp, for the position of fixed clamp.

Description

Technical Field

[0001] This utility model relates to the field of pulse MLCC capacitor testing technology, specifically to a fixture for high and low temperature testing of pulse MLCC capacitors. Background Technology

[0002] Pulse power multilayer ceramic chip capacitors are inorganic dielectric capacitors characterized by high specific capacitance, long lifespan, and high reliability. They can be used in electronic equipment in aerospace and other fields.

[0003] Currently, most high and low temperature test fixtures on the market are fixtures or toolings designed according to the corresponding size of the product. In high and low temperature and high pressure environments, these fixtures may pose safety risks to the product, test chamber, and personnel. This tooling is designed to conduct high and low temperature tests on products of different sizes in high and low temperature and high pressure environments. Utility Model Content

[0004] Therefore, this utility model provides a fixture for high and low temperature testing of pulse MLCC capacitors to solve the problems existing in the above-mentioned technology.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A fixture for high and low temperature testing of pulse MLCC capacitors includes a lower housing and an upper cover. The lower housing is hollow inside. The upper cover is hinged to one side of the top of the lower housing. A product placement platform is fixedly connected to the top of the lower housing. The top of the product placement platform has a placement groove for placing products. One wall of the placement groove has multiple sliding grooves along the horizontal direction. A clamp is placed in the sliding groove. One end of the clamp is placed in the sliding groove. A guide rod is placed in the sliding groove and fixedly connected to the sliding groove. The guide rod is inserted into the clamp and the two are slidably connected. A spring is sleeved on the guide rod. One end of the spring is fixedly connected to the guide rod, and the other end of the spring is fixedly connected to the clamp. A braking component is provided on the clamp to fix the position of the clamp.

[0007] Optionally, the braking assembly includes a set screw, the bottom end of which passes through the clamp and is threadedly connected to the clamp, and a knob is sleeved and fixedly connected to the top end of the set screw.

[0008] Optionally, the other end of the clamp is provided with a chuck for mounting the first electrode plate, and the second electrode plate is fixedly connected to the side wall opposite to the slide groove in the placement groove;

[0009] The lower housing is provided with a third electrode plate and an electrode block. The third electrode plate is fixedly connected to the bottom of the inner wall of the lower housing. The electrode block is placed on the third electrode plate. The first electrode plate and the third electrode plate are electrically connected by a wire, and the second electrode plate and the electrode block are electrically connected by a wire. A discharge resistor is connected in series between the first electrode plate and the third electrode plate and / or between the second electrode plate and the electrode block.

[0010] Optionally, when the clamp is fully placed in the slide groove, the spring is in a compressed state, and when the electrode at the front end of the clamp contacts the electrode on the side wall of the placement groove, the spring is in an unextended state.

[0011] Optionally, the upper cover extends around the lower housing to form a vertical section around the upper cover, and the height of the vertical section is higher than the height of the structure on the product placement platform.

[0012] The lower housing is provided with a top rod on one side of the product placement platform. The top rod passes through the top of the lower housing and corresponds to one of the vertical parts of the upper cover. A pressure rod is provided inside the lower housing. The middle part of the pressure rod is hinged to the lower housing. The end of the pressure rod away from the top rod is fixedly connected to the electrode block. When the electrode block is placed on the electrode plate, the end of the pressure rod near the top rod abuts against the bottom end of the top rod. The top end of the top rod extends out of the top of the lower housing.

[0013] This utility model has at least the following beneficial effects:

[0014] This invention features a clamp that slides within a groove on a placement table. The clamp can be adjusted to a suitable position based on the size of the product to be inspected, and then fixed in place by a braking component. This allows for the inspection of products of different sizes.

[0015] This invention also features a first electrode plate and a second electrode plate disposed in the placement slot, and a third electrode plate and an electrode block disposed in the lower housing. The first electrode plate and the third electrode plate are electrically connected, and the second electrode plate and the electrode block are electrically connected. Thus, when the product is held by the fixture, the first electrode plate, the second electrode plate, the third electrode plate, and the electrode block form a circuit and discharge through the discharge resistor. Attached Figure Description

[0016] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0017] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0018] Figure 1 This is a first-view structural diagram of an embodiment of the present invention;

[0019] Figure 2 This is a second-view structural schematic diagram of an embodiment of the present invention;

[0020] Figure 3 This is a third-view structural diagram of an embodiment of the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of section AA;

[0022] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB section;

[0023] Figure 6 This is a schematic diagram of the clamp structure from a fourth perspective according to an embodiment of the present invention;

[0024] Figure 7 This is a fifth-view structural diagram of a clamp according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Lower housing; 2. Upper cover; 3. Product placement platform; 4. Placement slot; 5. Slide groove; 6. Clamp; 7. Guide rod; 8. Spring; 9. Braking assembly; 91. Set screw; 92. Knob; 10. Chuck; 11. First electrode plate; 12. Second electrode plate; 13. Third electrode plate; 14. Electrode block; 15. Vertical part; 16. Push rod; 17. Pressure rod. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," "fourth," etc. (if present), in the specification, claims, and accompanying drawings of this utility model are intended to distinguish the objects they refer to. For schemes with a sequential flow, this terminology need not be interpreted as describing a specific order or sequence; for schemes with device structures, this terminology does not distinguish between matters of importance or positional relationships.

[0029] Furthermore, the terms “comprising,” “having,” and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may also include other steps or units that are not expressly listed but are inherent to these processes, methods, products, or devices, or steps or units added based on further optimizations of the inventive concept.

[0030] like Figures 1-7 As shown, this utility model discloses a high and low temperature testing fixture 6 for pulse MLCC capacitors, including a lower housing 1 and an upper cover 2. The lower housing 1 is hollow inside. The upper cover 2 is hinged to one side of the top of the lower housing 1. A product placement platform 3 is fixedly connected to the top of the lower housing 1. A placement groove 4 for placing products is opened on the top of the product placement platform 3. Multiple sliding grooves 5 are opened in one of the groove walls of the placement groove 4 in the horizontal direction. A clamp 6 is arranged in the sliding groove 5. One end of the clamp 6 is placed in the sliding groove 5. A guide rod 7 is arranged in the sliding groove 5 and fixedly connected to the sliding groove 5. The guide rod 7 is inserted into the clamp 6 and the two are slidably connected. A spring 8 is sleeved on the guide rod 7. One end of the spring 8 is fixedly connected to the guide rod 7 and the other end of the spring 8 is fixedly connected to the clamp 6. A braking assembly 9 is provided on the clamp 6 for fixing the position of the clamp 6. When the clamp 6 is fully placed in the slide groove 5, the spring 8 is in a compressed state. When the electrode at the front end of the clamp 6 contacts the electrode on the side wall of the placement groove 4, the spring 8 is in an unextended state.

[0031] Both the upper cover 2 and the lower housing 1 are made of insulating material. One side of the upper cover 2 is hinged to one side of the top of the lower housing 1. The upper cover 2 can be rotated to fasten onto the lower housing 1. The placement platform is fixedly connected to the top of the lower housing 1 and is located in the middle of the upper cover 2.

[0032] A placement slot 4 is provided on the right side of the placement platform. The placement slot 4 is a single square slot. Multiple sliding grooves 5 are spaced apart on the side wall of the placement slot 4 near the left side of the placement platform. A clamp 6 is disposed within a sliding groove 5, and the clamp 6 and the sliding groove 5 are slidably connected. The clamp 6 can slide from the sliding groove 5 into the placement slot 4. The clamp 6 is slightly longer than the length of the sliding groove 5. A guide rod 7 is provided on the side of the clamp 6 where it is placed within the sliding groove 5. The guide rod 7 is fixed to the side wall of the sliding groove 5 and inserted into the clamp 6. The guide rod 7 is slidably connected and guides the sliding of the clamp 6. The spring 8 is sleeved on the guide rod 7, and one end of the spring 8 is fixedly connected to the slide groove 5. The other end of the spring 8 is fixed on the clamp 6. The clamp 6 can deform the spring 8 by sliding in the slide groove 5. The braking assembly 9 is set on the clamp 6. The clamp 6 can be fixed to the placement table by the braking assembly 9. By adjusting the braking assembly 9, the clamp 6 can be adapted to the size of the product to be tested. Then the clamp 6 is fixed by the braking assembly 9.

[0033] In one specific embodiment, the braking assembly 9 includes a set screw 91, the bottom end of which passes through the clamp 6 and is threadedly connected to the clamp 6, and a knob 92 is sleeved and fixedly connected to the top end of the set screw 91.

[0034] In this embodiment, the braking component 9 is set as a set screw 91, which passes through the clamp 6. The bottom end of the set screw 91 contacts the placement table. By rotating the set screw 91, the friction between the set screw 91 and the placement table can be adjusted, thereby fixing the clamp 6. A knob 92 is set on the top of the set screw 91 for easy adjustment. A strip groove corresponding to the movement of the set screw 91 is opened on the placement table.

[0035] In a further specific embodiment, the other end of the clamp 6 is provided with a chuck 10 for mounting the first electrode plate 11, and the second electrode plate 12 is fixedly connected to the side wall of the placement groove 4 opposite to the slide groove 5.

[0036] The lower housing 1 is provided with a third electrode plate 13 and an electrode block 14. The third electrode plate 13 is fixedly connected to the bottom of the inner wall of the lower housing 1. The electrode block 14 is placed on the third electrode plate 13. The first electrode plate 11 and the third electrode plate 13 are electrically connected by a wire, and the second electrode plate 12 and the electrode block 14 are electrically connected by a wire. A discharge resistor is connected in series between the first electrode plate 11 and the third electrode plate 13 and / or between the second electrode plate 12 and the electrode block 14.

[0037] The clamp 6 described above is provided with a chuck 10 at its end, which can be used to install the first electrode plate 11. The second electrode plate 12 is installed on the side wall opposite to the slide 5 of the placement groove 4. After the product is placed between the first electrode plate 11 and the second electrode plate 12 and fixed by the clamp 6, the first electrode plate 11 and the second electrode plate 12 are respectively connected to the third electrode plate 13 and the electrode block 14 to form a circuit. A discharge resistor is provided on the circuit to prevent the product from becoming charged.

[0038] During testing, the aforementioned test clamp 10 needs to be connected to the test cable of the test instrument.

[0039] In a further embodiment, the upper cover 2 extends around the lower housing 1 to form a vertical portion 15 around the upper cover 2, and the height of the vertical portion 15 is higher than the height of the structure on the product placement platform 3.

[0040] The lower housing 1 is provided with a top rod 16 on one side of the product placement platform 3. The top rod 16 passes through the top of the lower housing 1 and corresponds to the position of one of the vertical parts 15 of the upper cover 2. The lower housing 1 is provided with a pressure rod 17 inside. The middle part of the pressure rod 17 is hinged to the lower housing 1. The end of the pressure rod 17 away from the top rod 16 is fixedly connected to the electrode block 14. When the electrode block 14 is placed on the electrode sheet, the end of the pressure rod 17 near the top rod 16 abuts against the bottom end of the top rod 16, and the top end of the top rod 16 extends out of the top of the lower housing 1.

[0041] The vertical portions 15 around the top cover 2 can contact the lower housing 1 when the cover is closed. The top rod 16 is positioned corresponding to the vertical portions 15 of the top cover 2. When the top cover 2 is closed, the top rod 16 can be pressed down, which in turn presses down the hinged pressure rod 17 inside the lower housing 1. The electrode block 14 on the other side of the pressure rod 17 separates from the third electrode plate 13. When the cover is opened for testing, the top cover 2 separates from the top rod 16, and the electrode block 14 falls onto the third electrode plate 13 under the action of gravity. When the product is placed between the first electrode plate 11 and the second electrode plate 12, a circuit can be formed to discharge and prevent the product from becoming charged.

[0042] It should be noted that when conducting high-voltage product tests, silicone oil can be placed in placement tank 4 to prevent air breakdown of the product and affect the test results.

[0043] Working principle:

[0044] When clamp 6 is not in use, it is in the closed state (the upper cover 2 and the lower housing 1 are in contact). When the product needs to be installed, the upper cover 2 is opened. At this time, the push rod 16 loses pressure, and the electrode block 14 falls onto the third electrode plate 13 under the action of gravity. By rotating the knob 92, clamp 6 is released. After moving clamp 6 to a space large enough to hold the product, the product is placed in it, and the knob 92 is tightened. Under high pressure, silicone oil is placed in the product placement slot 4 to prevent air breakdown. The first electrode plate 11 and the second electrode plate 12 are connected to the positive and negative terminals of the product. In the no-load, unpowered state, the upper cover 2 is closed, and the product is always in a discharge state to ensure personnel safety. After the product is clamped, it can be measured using the corresponding instruments.

[0045] The above specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0046] The technical features of the above embodiments can be combined in any way (as long as there is no contradiction in the combination of these technical features). For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described; these embodiments not explicitly written should also be considered to be within the scope of this specification.

[0047] The present invention has been described in a relatively specific and detailed manner above through general description and specific embodiments. It should be noted that, without departing from the concept of the present invention, various modifications and improvements can be made to these specific embodiments, all of which fall within the scope of protection of this application. Therefore, the scope of protection of this patent application should be determined by the appended claims.

Claims

1. A fixture for high and low temperature testing of pulsed MLCC capacitors, characterized in that: The device includes a lower housing and a top cover. The lower housing is hollow inside. The top cover is hinged to one side of the top of the lower housing. A product placement platform is fixedly connected to the top of the lower housing. The top of the product placement platform has a placement slot for placing products. One wall of the placement slot has multiple sliding grooves along the horizontal direction. A clamp is installed in the sliding groove. One end of the clamp is placed in the sliding groove. A guide rod is installed in the sliding groove and fixedly connected to the sliding groove. The guide rod is inserted into the clamp and the two are slidably connected. A spring is sleeved on the guide rod. One end of the spring is fixedly connected to the guide rod, and the other end of the spring is fixedly connected to the clamp. A braking component is provided on the clamp to fix the position of the clamp.

2. The fixture for high and low temperature testing of pulse MLCC capacitors according to claim 1, characterized in that: The braking assembly includes a set screw, the bottom end of which passes through the clamp and is threadedly connected to the clamp. A knob is sleeved and fixedly connected to the top end of the set screw.

3. The fixture for high and low temperature testing of pulse MLCC capacitors according to claim 1, characterized in that: The other end of the clamp is provided with a chuck for mounting the first electrode plate, and the second electrode plate is fixedly connected to the side wall opposite to the slide groove in the placement groove. The lower housing is provided with a third electrode plate and an electrode block. The third electrode plate is fixedly connected to the bottom of the inner wall of the lower housing. The electrode block is placed on the third electrode plate. The first electrode plate and the third electrode plate are electrically connected by a wire, and the second electrode plate and the electrode block are electrically connected by a wire. A discharge resistor is connected in series between the first electrode plate and the third electrode plate and / or between the second electrode plate and the electrode block.

4. A fixture for high and low temperature testing of pulse MLCC capacitors according to claim 1, characterized in that: When the clamp is fully placed in the slide groove, the spring is in a compressed state; when the electrode at the front end of the clamp contacts the electrode on the side wall of the placement groove, the spring is in an unextended state.

5. A fixture for high and low temperature testing of pulse MLCC capacitors according to claim 3, characterized in that: The upper cover extends towards the lower housing to form a vertical section around the upper cover, and the height of the vertical section is higher than the height of the structure on the product placement platform. The lower housing is provided with a top rod on one side of the product placement platform. The top rod passes through the top of the lower housing and corresponds to one of the vertical parts of the upper cover. A pressure rod is provided inside the lower housing. The middle part of the pressure rod is hinged to the lower housing. The end of the pressure rod away from the top rod is fixedly connected to the electrode block. When the electrode block is placed on the electrode plate, the end of the pressure rod near the top rod abuts against the bottom end of the top rod. The top end of the top rod extends out of the top of the lower housing.

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