CN220854947U - Screening clamp special for stacked bracket capacitor - Google Patents

Abstract

The utility model discloses a screening fixture special for a stacked bracket capacitor, which relates to the technical field of ageing screening of electronic elements. According to the utility model, the first alloy plate and the second alloy plate are arranged on the bottom plate, the spring probe is arranged on the second alloy plate, and the capacitor is fixed on the first alloy plate by using the spring probe, so that the fixation and connection of the capacitor on the screening clamp are realized, the upper cover plate and the guide plate in the prior art are omitted, and the purpose that the screening clamp is not suitable for detecting multiple-core-group capacitors with different sizes and different stacking numbers is achieved.

Description

Screening clamp special for stacked bracket capacitor

Technical Field

The utility model relates to the technical field of ageing screening of electronic elements, in particular to a screening clamp special for a stacked bracket capacitor.

Background

In order to expand the application range of chip ceramic capacitors (MLCC), multiple element chips are required to be stacked and welded, and then lead wires at two ends are led out for use, so that the capacitor has larger capacity and better performance. The stacked bracket type capacitor is called as a multi-core group ceramic dielectric capacitor, and the bracket pins of the capacitor are flexible in design and are suitable for different mounting occasions.

In order to ensure the reliability of the produced capacitor, the contractor needs to perform high-temperature aging screening on the capacitor to remove early failure products. For the MLCC product, the screening process is relatively simple, the electronic components are only required to be placed in a special screening fixture, then the screening fixture is placed in a detection circuit and electrified according to requirements, and the state of the electronic components is judged by monitoring current parameters in the circuit. Because the MLCC products are mostly rectangular with regular appearance, the screening fixture used by the MLCC products is relatively uniform in structure, and only the guide plates with different sizes need to be replaced. The multi-core group ceramic capacitor cannot be fixed by using the guide plate normally because of different stacking numbers and pin types.

In summary, it is desirable to design a special screening jig for multi-core ceramic dielectric capacitors that is adaptable to all sizes, and that can rapidly and effectively screen multi-core products.

In view of this, the present application has been made.

Disclosure of utility model

The utility model aims to provide a screening fixture special for stacked bracket capacitors, which is characterized in that a first alloy plate and a second alloy plate are arranged on a bottom plate, a spring probe is arranged on the second alloy plate, and the capacitors are fixed on the first alloy plate through the spring probe, so that the fixation and connection of the capacitors on the screening fixture are realized.

The embodiment of the utility model is realized by the following technical scheme: the utility model provides a pile up special screening jig of support condenser, includes the bottom plate, installs a plurality of first alloy plates and a plurality of second alloy plates that extend to the bottom plate bottom on the bottom plate, installs a spring probe on each second alloy plate, and spring probe can fix the condenser on first alloy plate, and each second alloy plate side all is provided with a resistance, is provided with the wiring mouth on the bottom plate, and the wiring mouth is put through to resistance one end, and the second alloy plate is put through to the resistance other end.

Preferably, each second alloy plate is parallel to the first alloy plate and the spring probes are perpendicular to the first alloy plate.

Preferably, the plurality of second alloy plates are distributed in a plurality of rows, and every two rows of second alloy plates are symmetrically arranged relative to the first alloy plate.

Preferably, two metal columns are installed beside each first alloy plate, the resistor is installed on the two metal columns, one end of each metal column is connected with the bottom plate, the end of each metal column is further provided with a wire, the wire of one metal column is connected with the second alloy plate, and the wire of the other metal column is connected with the wiring port.

Preferably, the wires extend along the interior of the base plate.

Preferably, the connection opening is provided on an outer edge of the base plate.

Preferably, only one connection opening is provided on each outer edge of the base plate.

Preferably, the circuits in which each of the second alloy plates is located are connected in parallel.

Preferably, the first alloy plate and the second alloy plate are each made of an aluminum alloy material.

Preferably, the lateral longitudinal position of the spring probe on the second alloy plate is adjustable.

Compared with the prior art, the embodiment of the utility model has the following advantages and beneficial effects:

1. According to the screening fixture special for the stacked bracket capacitor, the first alloy plate and the second alloy plate are arranged on the bottom plate, the spring probe is arranged on the second alloy plate, the capacitor is fixed on the first alloy plate through the spring probe, the capacitor is fixed and connected on the screening fixture, the upper cover plate is omitted, so that the reserved space can enable pins of a multi-core group product to face upwards, the screening fixture is prevented from being influenced by contact of the pins, the guide plate is omitted, the screening fixture provided by the embodiment of the utility model achieves the purposes that the multi-core group capacitor with different sizes and different stacking numbers can be used universally, and cost is saved.

2. The first alloy plates are arranged between the two rows of second alloy plates, namely stations on two sides of the first alloy plates can share one first alloy plate, so that the clamping function of the clamp is guaranteed, and the space and materials of the clamp are saved.

3. The lead is arranged in the bottom plate below the metal column, so that the lead does not occupy the clamping surface of the bottom plate, the placement of the capacitor is not affected, the lead winding is avoided, and the problem that the lead is difficult to distinguish is solved.

In general, the special screening fixture for the stacked bracket capacitor provided by the embodiment of the utility model achieves the aims of saving cost by installing the first alloy plate and the second alloy plate on the bottom plate, installing the spring probe on the second alloy plate, and fixing the capacitor on the first alloy plate through the spring probe, thereby being applicable to the multi-core group capacitors with different sizes and different stacking numbers.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a screening fixture specially used for stacked bracket capacitors according to an embodiment of the present utility model.

In the drawings, the reference numerals and corresponding part names:

1-bottom plate, 2-first alloy plate, 3-second alloy plate, 4-spring probe, 5-resistance, 6-wiring mouth, 7-metal post, 8-condenser.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.

Examples

As shown in fig. 1, a screening jig dedicated for stacked bracket capacitor 8 includes a base plate 1, where the base plate 1 is used for supporting and fixing other components, and the base plate 1 is a plate-like structure that can conduct electricity, such as a metal plate, an alloy plate, or the like. The base plate 1 is provided with a plurality of first alloy plates 2 and a plurality of second alloy plates 3 extending to the bottom of the base plate 1, so that when the screening fixture is connected with one end of a screening box detection loop during screening, it is to be noted that the first alloy plates 2 and the second alloy plates 3 are made of conductive materials, and alloy materials are generally adopted in the practical application process, so that the first alloy plates 2 and the second alloy plates 3 are made of aluminum alloy materials for convenient understanding, the cost can be saved, the actually required hardness can be ensured, and of course, tungsten alloy and the like can be selected in other embodiments.

A spring probe 4 is mounted on each second alloy plate 3, the spring probe 4 being capable of fixing the capacitor 8 to the first alloy plate 2, the spring probe 4 being operative to fix the capacitor 8 to the first alloy plate 2 to ensure that the capacitor 8 is firmly connected to the test circuit, the probe being made of an electrically conductive material, and in the embodiment of the utility model, a gold-plated spring probe 4 is selected for ease of understanding. Each second alloy plate 3 is connected to a respective resistor 5, which resistors 5 are used to simulate or limit certain operating conditions of the capacitor 8 in order to test or screen the capacitor 8. The wiring port 6 is arranged on the bottom plate 1, one end of the resistor 5 is connected with the wiring port 6, and the other end of the resistor 5 is connected with the second alloy plate 3.

In particular, one or more detection stations may be provided on the base plate 1, and in the embodiment of the present utility model, preferably, a plurality of detection stations are provided on the base plate 1, each detection station corresponding to one second alloy plate 3 and one individual resistor 5, and in use, the capacitor 8 is placed between the spring probe 4 and the first alloy plate 2, i.e. the capacitor 8 is fixed on the first alloy plate 2 by the elastic force of the spring probe 4. In order to make the spring force of the spring probe 4 to the capacitor 8 uniform, further, each second alloy plate 3 is parallel provided with the first alloy plate 2, the spring probe 4 is perpendicular to the first alloy plate 2, the structure can ensure that the direction of the spring force is also perpendicular to the first alloy plate 2, and the capacitor 8 can be reduced from being locally damaged by the spring probe 4 due to uneven stress while ensuring stable and uniform spring force. Preferably, the contact surface area of the spring probe 4 and the capacitor 8 can be set to be larger, so that the contact area between the spring probe 4 and the capacitor 8 can be increased, the stress uniformity of the applied clamping force is increased, namely, the pressure is reduced, and the situation of overlarge local pressure is avoided, so that the ceramic body of the capacitor 8 is protected.

Further, the second alloy plates 3 are distributed in a rectangular array, however, in other embodiments, the shape of the rectangular array, such as a combined array, may be omitted, which is not limited herein. In the embodiment of the utility model, the first alloy plates 2 are arranged in the middle of every two rows of the second alloy plates 3 along the axial direction to separate the second alloy plates, and stations on two sides of the first alloy plates 2 can share one first alloy plate 2 under the structural condition, so that the clamping function of the clamp is ensured, and the space and materials of the clamp are saved.

When the screening fixture is used, station lines are connected into a loop through the bottom plate 1, the wiring port 6 and the detection circuit, each station share the leading-out end of the first alloy plate 2 in the middle of each station, the leading-out ends of the first alloy plate 2 and the second alloy plate 3 extend to the bottom of the bottom plate 1, the first alloy plate 2 and the second alloy plate 3 are connected with one end of the screening box detection loop when the screening fixture works, each station mainly comprises a single leading-out end of the second alloy plate 3, a spring probe 4 is fixed, a probe contact is contacted with one end of a capacitor 8, the other end of the capacitor 8 is contacted with the leading-out end of the first alloy plate 2 in the common, the leading-out end of the second alloy plate 3 of each station carries one end of the resistor 5 through a wire, and the metal column 7 at the other end of the resistor 5 is connected with the wiring port 6 on the bottom plate 1 through the wire.

When the multi-core capacitor screening fixture is used, the spring probes 4 of the corresponding stations are pulled open, then the multi-core capacitor 8 is placed in the stations, pins face upwards, the capacitor 8 is not contacted with other parts of the screening fixture, the spring probes 4 are slowly loosened, the spring probes 4 are contacted with one ends of the capacitor 8, and therefore the capacitor 8 is clamped and fixed on the first alloy plate 2 of the corresponding station by means of the elasticity of the spring probes 4, and product clamping is completed. Preferably, in the embodiment of the utility model, all stations in the whole screening fixture are distributed in parallel, and the bottom is a public leading-out end which is contacted with the box body when the screening fixture is put into the screening box.

Meanwhile, the wiring port 6 is arranged on the clamp base plate 1 and is connected with the other pole of the detection circuit of the screening box through the wiring port 6, so that a loop is formed between the screening clamp and the detection circuit of the screening box, and then the screening box is electrified to start high-temperature aging screening. In the embodiment of the utility model, in order to simplify the circuit and save the wiring ports 6, the wiring ports 6 are arranged on the outer side edge of the bottom plate 1, only one wiring port 6 is arranged on each outer side edge of the bottom plate 1, the wiring ports 6 are conveniently connected with a detection circuit by arranging the wiring ports on the edges, and each side edge is only provided with one wiring port 6, namely, the circuit of each station on each side is connected with the same wiring port 6, so that the circuit on the screening fixture can be simplified while the simultaneous detection of a plurality of stations can be ensured.

In the embodiment of the present utility model, further, the circuits where each second alloy plate 3 is located are connected in parallel, and the state of the capacitor 8 is determined by monitoring the current parameter in the circuit, so that the detection of each station is not affected, and it is convenient to check which circuit has failed, and of course, in other embodiments, a serial connection mode may be adopted, and when a serial connection mode is adopted, the state of the capacitor 8 is determined by monitoring the voltage parameter in the circuit.

It should be noted that, in the embodiment of the present utility model, in order to thoroughly hide the wires, a plurality of metal columns 7 are installed on the bottom plate 1, two metal columns 7 are installed beside each first alloy plate 2, the resistor 5 is installed on the two metal columns 7, the end of the bottom plate 1 of each metal column 7 is provided with a wire, the wire of one metal column 7 is connected with the second alloy plate 3, and the wire of the other metal column 7 is connected with the wire connection port 6. This structure can set up resistance 5 on bottom plate 1 upper portion, guarantees the clean and tidy and spaciousness of bottom plate 1, and preferably, the wire extends along bottom plate 1 inside, and the wire is hidden in the inside of bottom plate 1 promptly completely, guarantees the spaciousness of bottom plate 1, has also avoided the winding of the wire on the bottom plate 1 accommodation face.

Further, the lateral longitudinal position of the spring probe 4 on the second alloy plate 3 can be adjusted. Therefore, the device is more suitable for different pin types of the multi-core group capacitor 8, and in the actual operation process, the direction of the elastic clamping force can be changed by adjusting the position of the spring probe 4 in the horizontal direction and the vertical direction, so that the multi-core group capacitors 8 with different sizes and different stacking numbers can be stably clamped on the screening clamp in the embodiment of the utility model.

In summary, the screening fixture provided by the embodiment of the utility model discards the upper cover plate on the basis of the existing sheet-type fixture, so that the reserved space can enable the pins of the multi-core group product to face upwards, and the influence caused by contact between the screening fixture and the pins is avoided. Meanwhile, the guide plates are omitted, so that the screening fixture provided by the embodiment of the utility model can realize the universality of the multi-core group capacitors 8 with different sizes and different stacking numbers, saves the cost, and is simple to operate and high in practicability.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model. It should be noted that the structures or components illustrated in the drawings are not necessarily drawn to scale, and that descriptions of well-known components and processing techniques and procedures are omitted so as not to unnecessarily limit the present utility model.

Claims (10)

1. The utility model provides a pile up special screening jig of support condenser, includes bottom plate (1), its characterized in that, install on bottom plate (1) and extend to a plurality of first alloy board (2) and a plurality of second alloy board (3) of bottom plate (1), each install one spring probe (4) on second alloy board (3), spring probe (4) can fix condenser (8) on first alloy board (2), each second alloy board (3) side all is provided with a resistance (5), be provided with wiring mouth (6) on bottom plate (1), wiring mouth (6) are put through to resistance (5) one end, resistance (5) other end switch-on second alloy board (3).

2. A stacking rack capacitor dedicated screening jig according to claim 1, wherein each of the second alloy plates (3) is parallel to the first alloy plate (2), and the spring probes (4) are perpendicular to the first alloy plate (2).

3. The screening jig special for stacked bracket capacitors according to claim 2, wherein a plurality of the second alloy plates (3) are distributed in a plurality of rows, and each two rows of the second alloy plates (3) are symmetrically arranged with respect to the first alloy plate (2).

4. A stacking rack capacitor special screening jig according to claim 3, wherein two metal posts (7) are mounted beside each first alloy plate (2), the resistor (5) is mounted on the two metal posts (7), one end of each metal post (7) is connected with the bottom plate (1) and is further provided with a wire, the wire of one metal post (7) is connected with the second alloy plate (3), and the wire of the other metal post (7) is connected with the wiring port (6).

5. A stacking rack capacitor dedicated screening jig according to claim 4, wherein said wires extend along the inside of the bottom plate (1).

6. A screening jig for stacked bracket capacitors as claimed in any one of claims 1-5, wherein said wire connection port (6) is provided on the outer side edge of the base plate (1).

7. A stacking rack capacitor dedicated screening jig according to claim 6, wherein only one wire connection opening (6) is provided on each outer side edge of the bottom plate (1).

8. A screening jig for stacked bracket capacitors according to claim 1, wherein the circuits in which each of the second alloy plates (3) is located are connected in parallel.

9. The screening jig special for stacked bracket capacitors according to claim 1, wherein the first alloy plate (2) and the second alloy plate (3) are both made of aluminum alloy material.

10. A stacking rack capacitor dedicated screening jig according to claim 1, characterized in that the lateral longitudinal position of the spring probe (4) on the second alloy plate (3) is adjustable.