A rectifier bridge test fixture

Abstract

This document provides a rectifier bridge test fixture, including: a PCB substrate, an insulating base, an insulating partition, a test base and a conductive wire column, wherein: the PCB substrate and the insulating base are arranged opposite to each other and separated by an insulating partition; the number of conductive wire columns is the same as the number of output ports of the rectifier bridge, and the conductive wire columns are connected to the PCB substrate and the insulating base to cooperate with the insulating partition to fix the PCB substrate and the insulating base; the insulating partition is arranged between the PCB substrate and the insulating base according to a preset layout to isolate each conductive wire column from each other; the test base is arranged on the surface of the PCB substrate away from the insulating base, and the number of the test base is the same as the number of the conductive wire columns and is connected one by one with the conductive wire columns. As a result, it can be achieved that during the rectifier bridge test, the test adapter and the test fixture only need to be connected once, which reduces the operator's repeated labor, reduces the error rate, and improves work efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor devices, and in particular to a rectifier bridge test fixture. Background Art

[0002] As a basic component, rectifier bridges are widely used in civilian electronic products, weapons and equipment, aerospace, etc. With the development trend of integration and modularization of electronic products, the use of rectifier bridges is showing an upward trend.

[0003] Rectifier bridges used in high-end civilian electronic products, weapons and equipment, aerospace and other fields need to be screened for reliability before installation. The test link requires professional equipment equipped with special fixtures to test and inspect their electrical parameters. Rectifier bridge test fixtures include universal adapters and special test fixtures. Rectifier bridges generally have five output ports. Usually, when testing rectifier bridges, special fixtures are not designed to be used, but universal adapters are used. The universal adapter has five output terminals, each of which is connected to a clip through a wire. During the test, each clip corresponds to an output port of the rectifier bridge. After the test is completed, another rectifier bridge is replaced for the same operation, and so on. This operation mode will have two adverse consequences: first, the test efficiency is low, which affects the production progress. Second, long-term repeated operation is easy to cause fatigue of the operator. In the process of connecting the rectifier bridge with the clip, the connection correspondence error may occur, resulting in hidden dangers during the test or even burning of the device.

[0004] Therefore, during the rectifier bridge test process, a test fixture is urgently needed to replace the previous repeated corresponding connection operation mode, which can not only improve the test efficiency, but also reduce the operator's repeated corresponding connection errors. Summary of the invention

[0005] This manual provides a rectifier bridge test fixture, which can achieve that during the rectifier bridge test process, the test adapter and the test fixture only need to be connected once, thereby reducing the operator's repetitive work, reducing the error rate, and improving work efficiency.

[0006] In a first aspect, an embodiment of the present specification further provides a rectifier bridge test fixture, comprising: a PCB substrate (1), an insulating base (2), an insulating partition (3), a test base (4) and a conductive wire column (5), wherein:

[0007] The PCB substrate (1) and the insulating base (2) are arranged opposite to each other and separated by the insulating partition (3);

[0008] The number of the conductive wire posts (5) is the same as the number of the output ports of the rectifier bridge, and the conductive wire posts (5) are connected to the PCB substrate (1) and the insulating base (2) so as to cooperate with the insulating partition (3) to fix the PCB substrate (1) and the insulating base (2);

[0009] The insulating partition (3) is arranged between the PCB substrate (1) and the insulating base (2) in a preset layout so that each conductive wire column (5) is isolated from each other;

[0010] The test base (4) is arranged on a surface of the PCB substrate (1) away from the insulating base (2); the number of the test bases (4) is the same as the number of the conductive wire posts (5) and they are connected to the conductive wire posts (5) in a one-to-one correspondence.

[0011] Optionally, a plurality of positioning holes are provided on the PCB substrate (1) and the insulating base (2), and the number of the positioning holes is the same as the number of the conductive wire posts (5), and the positioning holes on the PCB substrate (1) and the positioning holes on the insulating base (2) are arranged opposite to each other.

[0012] The conductive wire column (5) is connected to the PCB substrate (1) and the insulating base (2) via the positioning hole.

[0013] Optionally, the first end of the conductive wire post (5) extends outward to form a blocking portion, the diameter of the blocking portion is greater than the diameter of the positioning hole, and the second end of the conductive wire post (5) passes through the PCB substrate (1) and the insulating base (2) in sequence and is locked.

[0014] Optionally, the area where the positioning holes are located on the surface of the insulating base (2) away from the PCB substrate (1) is recessed to form a plurality of hidden grooves, and the second end of the conductive wire column (5) is locked in the hidden groove and is not exposed from the surface of the insulating base (2) away from the PCB substrate (1).

[0015] Optionally, a thread is provided on the second end of the conductive wire column (5) and is locked by a nut (6), and the nut is hidden in the hidden groove.

[0016] Optionally, a plurality of welding holes are provided on the PCB substrate (1), and the number of the welding holes is the same as the number of the conductive wire posts (5);

[0017] A test base (4) is welded to each welding hole.

[0018] Optionally, the width of the test base (4) does not exceed 1 cm.

[0019] Optionally, a mounting groove is provided on a surface of the PCB substrate (1) close to the insulating base (2) and a surface of the insulating base (2) close to the PCB substrate (1), and the insulating partition (3) is installed along the mounting groove.

[0020] Optionally, the width of the mounting groove does not exceed 2 mm.

[0021] Optionally, the PCB substrate (1) and the insulating base (2) are squares of the same size.

[0022] This specification is based on the above embodiments. Compared with the prior art method of manually identifying the pins and connecting them to a universal adapter each time a rectifier bridge is tested, this specification can effectively eliminate connection errors caused by repeated manual operations and improve the reliability of detection. At the same time, the detection efficiency can be greatly improved from testing 50 to 60 devices in 1 hour to testing at least 300 devices in 1 hour. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The exemplary embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation on this specification.

[0024] In the figure:

[0025] Figure 1 A schematic diagram of a rectifier bridge test fixture provided in an embodiment of this specification;

[0026] Figure 2 A schematic top view of a rectifier bridge test fixture provided in an embodiment of this specification;

[0027] Figure 3 A left view schematically showing a rectifier bridge test fixture provided in accordance with an embodiment of the present specification. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of this specification clearer, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and their corresponding drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this document.

[0029] The technical solutions provided by the embodiments of this specification are described in detail below in conjunction with the accompanying drawings.

[0030] Figure 1A top view schematic diagram of a rectifier bridge test fixture provided in an embodiment of this specification, see Figure 1 , the rectifier bridge test fixture may specifically include:

[0031] A PCB substrate (1), an insulating base (2), an insulating partition (3), a test base (4) and a conductive wire column (5), wherein:

[0032] The PCB substrate (1) and the insulating base (2) are arranged opposite to each other and separated by the insulating partition (3); of course, the shapes of the two are not limited here and can be determined according to the situation;

[0033] The number of the conductive wire posts (5) is the same as the number of the output ports of the rectifier bridge, and the conductive wire posts (5) are connected to the PCB substrate (1) and the insulating base (2) so as to cooperate with the insulating partition (3) to fix the PCB substrate (1) and the insulating base (2);

[0034] The insulating partition (3) is arranged between the PCB substrate (1) and the insulating base (2) in a preset layout so that each conductive wire column (5) is isolated from each other;

[0035] The test base (4) is arranged on a surface of the PCB substrate (1) away from the insulating base (2); the number of the test bases (4) is the same as the number of the conductive wire posts (5) and they are connected to the conductive wire posts (5) in a one-to-one correspondence.

[0036] The following is an explanation of the various parts of the rectifier bridge test fixture:

[0037] Combination Figure 1 and Figure 2 The PCB substrate (1) and the insulating base (2) are both provided with a plurality of positioning holes, and the number of the positioning holes is the same as the number of the conductive wire posts (5), and the positioning holes on the PCB substrate (1) and the positioning holes on the insulating base (2) are arranged opposite to each other; the conductive wire posts (5) are connected to the PCB substrate (1) and the insulating base (2) via the positioning holes, thereby achieving positioning of the conductive wire posts (5) and accurate installation of the PCB substrate (1) and the insulating base (2).

[0038] The first end of the conductive wire column (5) extends outward to form a blocking portion, the diameter of the blocking portion is greater than the diameter of the positioning hole, and the second end of the conductive wire column (5) passes through the PCB substrate (1) and the insulating base (2) in sequence and is locked.

[0039] Combination Figure 1 and Figure 3The area where the positioning holes are located on the surface of the insulating base (2) away from the PCB substrate (1) is recessed to form a plurality of hidden grooves, and the second ends of the conductive wire posts (5) are locked in the hidden grooves and are not exposed on the surface of the insulating base (2) away from the PCB substrate (1). Thus, the stability of the entire fixture can be ensured by flattening the bottom of the insulating base (2), facilitating the test operation and improving safety.

[0040] The second end of the conductive wire column (5) is provided with a thread and is locked by a nut (6), and the nut is hidden in the hidden groove.

[0041] Combination Figure 2 The PCB substrate (1) is provided with a plurality of welding holes, the number of which is the same as the number of the conductive wire posts (5); a test base (4) is welded to each welding hole. The width of the test base (4) does not exceed 1 cm.

[0042] Combination Figure 1 and Figure 3 In the dotted line portion, a mounting groove is provided on the surface of the PCB substrate (1) close to the insulating base (2) and the surface of the insulating base (2) close to the PCB substrate (1), and the insulating partition (3) is installed along the mounting groove. The groove width of the mounting groove does not exceed 2 mm. Thus, the installation of the insulating partition (3) can be facilitated, and the isolation stability of the insulating partition (3) to the PCB substrate (1) and the insulating base (2) can be ensured.

[0043] Combine the following Figures 1 to 3 The structure of the rectifier bridge test fixture is described in detail from the perspective of specific examples:

[0044] The PCB substrate (1) and the insulating base (2) are both in the shape of a whole square, and five positioning holes of the same size are provided on the left and right sides of the PCB substrate (1) and the insulating base (2).

[0045] The PCB substrate is provided with 5 positioning holes and 5 welding holes of the test base (4). The welding holes are connected with the positioning holes by copper wires (7), and the test base is welded to the welding holes. The width of the test base does not exceed 1 cm. If the width is too wide, the space between the welding holes will be limited, and all the test bases cannot be installed at the same time.

[0046] The PCB substrate (1) and the insulating base (2) are connected by a conductive wire post (5), and good ohmic contact is formed between the upper end of the conductive wire post (5) and the positioning hole of the PCB substrate (1). The conductive wire post (5) is fixed by a nut (6). The conductive wire post can stabilize the structure of the rectifier bridge test fixture and can also serve as a carrier for connecting the test fixture with a universal fixture clip; the positioning hole of the insulating base (2) is in a stepped form, and the nut (6) is hidden in the positioning hole.

[0047] An insulating partition (3) is embedded between the PCB substrate (1) and the insulating base (2) so that each conductive wire column (5) is isolated from each other, thereby preventing short circuits caused by contact when a universal adapter clip is connected to the conductive wire column.

[0048] A groove is cut at the relative position between the lower surface of the PCB substrate and the upper surface of the insulating base to fix the insulating partition, and the groove width does not exceed 2mm.

[0049] The positioning holes of the insulating base adopt a stepped opening mode. A large hole is opened on the lower surface of the insulating base, and concentric small holes are opened on the corresponding upper surface. The conductive wire column port is hidden in the large hole, which can improve safety.

[0050] The working principle of the rectifier bridge test fixture provided in this manual is as follows:

[0051] The adapter has 5 output terminals, each of which is fixed with an alligator clip; the rectifier bridge to be tested has 5 input pins. Before the invention of this test fixture, when testing the rectifier bridge, the alligator clips at the 5 output terminals of the adapter need to be connected to the 5 input pins of the rectifier bridge to be tested one by one, and then the test is performed. After the test, the pins of the rectifier bridge to be tested need to be separated from the alligator clips of the adapter. The above operation needs to be repeated for each device tested. The repeated manual clamping and connection may easily lead to the risk of misconnection of pins, and the test efficiency is relatively low.

[0052] See also Figure 2 , the specific test steps of the present invention are as follows:

[0053] 1. Connect the five alligator clips at the adapter's output terminals to the five conductive posts on the test fixture one by one.

[0054] 2. The rectifier bridge to be tested is inserted into the test base (4) of the test fixture according to the corresponding relationship between the pins. Since the arrangement and position of the test base are fixed and unique, the insertion method and position of the rectifier bridge to be tested are also fixed and unique.

[0055] 3. After testing a rectifier bridge, pull it out from the test base.

[0056] 4. Repeat steps 2 and 3 for each rectifier bridge tested until the test is completed.

[0057] 5. After the test, separate the five alligator clips at the adapter's output terminals from the five conductive posts on the test fixture to disconnect them.

[0058] The invention uses a specially designed test base that is compatible with the input pins of the rectifier bridge, so that one connection can be made and multiple tests can be performed, thereby effectively avoiding the risk of repeated manual clamping connections that may easily lead to wrong pin connections. At the same time, the clamping connection can be replaced by a simple insertion and removal operation, that is, by changing the clamping to plugging and unplugging, the reliability and efficiency of the test can be effectively improved; and due to the presence of the insulating partition (3), mutual contact between the clamps can be effectively avoided.

[0059] The above is only a preferred embodiment of the present specification and is not intended to limit the present specification. Anything not described in detail in the present invention is a well-known technology to those skilled in the art. Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and are not intended to limit it. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A rectifier bridge test fixture, characterized in that: include: A PCB substrate (1), an insulating base (2), an insulating partition (3), a test base (4) and a conductive wire column (5), wherein: The PCB substrate (1) and the insulating base (2) are arranged opposite to each other and separated by the insulating partition (3); The number of the conductive wire posts (5) is the same as the number of the output ports of the rectifier bridge, and the conductive wire posts (5) are connected to the PCB substrate (1) and the insulating base (2) so as to cooperate with the insulating partition (3) to fix the PCB substrate (1) and the insulating base (2); The insulating partition (3) is arranged between the PCB substrate (1) and the insulating base (2) in a preset layout so that each conductive wire column (5) is isolated from each other; The test base (4) is arranged on a surface of the PCB substrate (1) away from the insulating base (2); the number of the test bases (4) is the same as the number of the conductive wire posts (5) and they are connected to the conductive wire posts (5) in a one-to-one correspondence; the welding holes of the test base (4) are connected to the positioning holes by copper wires (7); When testing the rectifier bridge, the alligator clips at the output end of the adapter are connected to the conductive wire posts on the test fixture in a one-to-one correspondence, and the input pins of the rectifier bridge to be tested are inserted into the test base (4) of the test fixture in a one-to-one correspondence.

2. The rectifier bridge test fixture according to claim 1, characterized in that: The PCB substrate (1) and the insulating base (2) are both provided with a plurality of positioning holes, and the number of the positioning holes is the same as the number of the conductive wire posts (5), and the positioning holes on the PCB substrate (1) and the positioning holes on the insulating base (2) are arranged opposite to each other. The conductive wire column (5) is connected to the PCB substrate (1) and the insulating base (2) via the positioning hole.

3. The rectifier bridge test fixture according to claim 2, characterized in that: The first end of the conductive wire post (5) extends outward to form a blocking portion, the diameter of the blocking portion is greater than the diameter of the positioning hole, and the second end of the conductive wire post (5) passes through the PCB substrate (1) and the insulating base (2) in sequence and is locked.

4. The rectifier bridge test fixture according to claim 3, characterized in that: The area where the positioning holes are located on the surface of the insulating base (2) away from the PCB substrate (1) is recessed to form a plurality of hidden grooves, and the second ends of the conductive wire posts (5) are locked in the hidden grooves and are not exposed from the surface of the insulating base (2) away from the PCB substrate (1).

5. The rectifier bridge test fixture according to claim 4, characterized in that: The second end of the conductive wire column (5) is provided with a thread and is locked by a nut (6), and the nut is hidden in the hidden groove.

6. The rectifier bridge test fixture according to claim 1, characterized in that: The PCB substrate (1) is provided with a plurality of welding holes, and the number of the welding holes is the same as the number of the conductive wire posts (5); A test base (4) is welded to each welding hole.

7. The rectifier bridge test fixture according to claim 6, characterized in that: The width of the test base (4) does not exceed 1 cm.

8. The rectifier bridge test fixture according to claim 1, characterized in that: The surface of the PCB substrate (1) close to the insulating base (2) and the surface of the insulating base (2) close to the PCB substrate (1) are provided with mounting grooves, and the insulating partition (3) is installed along the mounting grooves.

9. The rectifier bridge test fixture according to claim 8, characterized in that: The width of the mounting groove does not exceed 2 mm.

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