Electronic board card test case

Abstract

The invention belongs to the technical field of electronic board card testing, and particularly relates to an electronic board card testing case which comprises a case body, an upper pressing block and a lower pressing block, a plurality of holes are formed in the peripheries and the side faces of the upper pressing block and the lower pressing block, the case body is connected with the upper pressing block and the lower pressing block through screws or bolts, and unthreaded holes are formed in the upper pressing block and the lower pressing block. The upper pressing block and the lower pressing block penetrate through the unthreaded holes through screws or bolts to be connected with the vibration table and are locked through nuts. A vibration test tool and a shielding test tool of the electronic board card are comprehensively designed into one tool, and through structural optimization design, the performance of light weight, good heat dissipation effect, good mechanical property and good shielding effect is achieved. According to the invention, a vibration tool and a shielding test tool are combined, so that the types of tools are reduced. Moreover, in a vibration test, the device can be used in X, Y and Z directions. The electromagnetic shielding device is light in weight, convenient to operate and good in electromagnetic shielding effect.

Description

Technical Field

[0001] This invention belongs to the field of electronic circuit board testing technology, specifically an electronic circuit board testing chassis, which is mainly used for vibration testing and electromagnetic shielding testing of electronic circuit boards. Background Technology

[0002] In recent years, the performance of electronic circuit boards has been continuously improving, and the electronic circuit boards used in them have gradually become more standardized, modular, and integrated. VPX high-density integrated circuit boards use standardized interfaces, which have the advantages of rapid insertion and removal and excellent interchangeability. Correspondingly, the demand for tooling for vibration testing and electromagnetic shielding testing of electronic circuit boards is also increasing and becoming more widespread.

[0003] However, the vibration fixtures and shielding fixtures of electronic circuit board modules are currently separated, and they have defects such as heavy weight, poor heat dissipation and poor shielding effect. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention proposes an electronic board test chassis, including a chassis body and upper and lower pressure blocks. The upper and lower pressure blocks have multiple holes on their four sides and sides. The chassis body is connected to the upper and lower pressure blocks by screws or bolts. The upper and lower pressure blocks have light holes inside. The upper and lower pressure blocks are connected to the vibration table by screws or bolts passing through the light holes and locked with nuts.

[0005] Furthermore, there are weight-reducing grooves on the upper and lower pressure blocks.

[0006] Furthermore, the chassis body includes a bottom plate, a front cover, two side covers, a top cover, and a rear cover.

[0007] Furthermore, the bottom plate of the chassis has grooves for installing conductive rubber strips.

[0008] Furthermore, a shielding pad is installed between the base plate of the chassis and the connector.

[0009] Furthermore, the side panels, front panel, and top panel of the chassis body have grooves for installing conductive rubber strips.

[0010] Furthermore, both the bottom plate and the cover plate of the chassis have a stop design.

[0011] Furthermore, both the bottom plate and the cover plate of the chassis have weight-reduction grooves.

[0012] Furthermore, heat dissipation fins are installed on each cover plate and bottom plate of the chassis.

[0013] Furthermore, the electronic circuit board is inserted into the bottom plate through the sliding groove of the side cover of the chassis body, locked with locking strips, and pressed with pressure strips on both sides.

[0014] This invention integrates vibration testing fixtures and shielding testing fixtures into a single design. Through structural optimization, it achieves lightweight, excellent heat dissipation, superior mechanical properties, and superior shielding performance. This invention combines vibration and shielding testing fixtures, reducing the variety of fixture types. Furthermore, it can be used in vibration testing in all three X, Y, and Z directions. This invention is lightweight, easy to operate, and provides excellent electromagnetic shielding. Attached Figure Description

[0015] Figure 1 The following is a general assembly drawing of the electronic circuit board after it is assembled into the chassis. (a) is a general assembly drawing including the upper and lower pressure blocks and the chassis body, and (b) is a general assembly drawing of the chassis body without the top cover. Figure 2 This is a diagram of the compaction block model; Figure 3 The diagram shows the installation of the electronic board in three directions during the vibration experiment. (a) shows the installation of the board in direction 1 onto the vibration table, (b) shows the installation of the board in direction 2 onto the vibration table, and (c) shows the installation of the board in direction 3 onto the vibration table.

[0016] Figure 4 The diagram shows the structure of the chassis body, where (a) is the front view of the chassis body structure and (b) is the rear view of the chassis body structure. Figure 5 The diagram shows the base plate model, where (a) is the outer side view of the base plate and (b) is the inner side view of the base plate. Figure 6 This is a diagram of the baseboard and the baseboard assembly after the test circuit board has been installed. Figure 7 The following are model diagrams of the side cover, front cover, and top cover, where (a) is the outer side view of the side cover, (b) is the inner side view of the side cover, (c) is the outer side view of the front cover, (d) is the inner side view of the front cover, (e) is the outer side view of the top cover, and (f) is the inner side view of the top cover. Figure 8 Assembly diagram of the product being installed in the chassis. Detailed Implementation

[0017] To make the objectives, contents, and advantages of the present invention clearer, the specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0018] like Figure 1 As shown, in a specific embodiment of the present invention, the present invention includes a chassis body and upper and lower pressure blocks. The chassis body and the upper and lower pressure blocks are connected by screws (M8). The pressure blocks are connected to the vibration table by bolts passing through optical holes and the bolts are locked with nuts. Electronic circuit boards are mounted in the chassis body by locking strips and pressure strips.

[0019] In a specific embodiment of the present application, the four peripheral edges and the side surface of the pressing block have a total of 18 holes of 14, through which M10 bolts can be passed, and nuts are used to lock the pressing block and the vibration table. The pressing block has 9 light holes of 9 in the interior, through which M8 screws can be passed, and the pressing block is connected with the cabinet body. The pressing block is provided with 9 weight-reducing grooves, which reduces the actual weight of the pressing block. The four peripheral edges and the side surface of the upper and lower pressing blocks are provided with hole forms, and the vibration table can be changed so that the product is turned in X, Y and Z directions respectively to complete the vibration test in three directions. The structure of the pressing block is shown in Figure 2 . The installation schematic of the three directions is shown in Figure 3 , and the three directions are perpendicular.

[0020] The outer surface of the cabinet body is composed of 6 surfaces, including 1 bottom plate, 1 front cover plate, 2 side cover plates, 1 upper cover plate and 1 rear cover plate, as shown in Figure 4 .

[0021] The bottom plate is provided with a groove for mounting the conductive rubber strip, which is used for mounting the conductive rubber strip. The spacing between the mounting screws of the test circuit board on the bottom plate and the spacing between the bottom plate and other side plates for assembly are designed to be small, and a shielding pad can be mounted between the connector and the bottom plate. The above design increases the electromagnetic shielding effect of the cabinet body. The structure of the bottom plate and the bottom plate assembly is shown in Figure 5 , Figure 6 .

[0022] As shown in Figure 7 , the side cover plate, the front cover plate and the upper cover plate are also provided with grooves for mounting the conductive rubber strip, and the conductive rubber strip can be mounted. The bottom plate and the several cover plates are all provided with a stopper design. It can prevent electromagnetic waves from interfering with the product through the gap and increase the electromagnetic shielding effect of the cabinet body. The bottom plate and the several cover plates are all provided with weight-reducing grooves to prevent the cabinet body from being too heavy to operate. The above cover plates are all provided with heat dissipation fins to improve the heat dissipation effect of the cabinet body.

[0023] The product is inserted into the bottom plate through the sliding groove of the side cover plate, and is locked by the locking strip. The product is fixed by the pressing strip pressing the two edges. The state of the product assembled into the cabinet body is shown in Figure 8 .

[0024] The design of the pressing block cooperating with the cabinet body of the present application makes it more convenient to do three-direction vibration test; the weight-reducing groove design and the weight-reducing fin design of the cabinet body can ensure that the cabinet body is light and easy to operate; the present application can enhance the electromagnetic shielding effect by designing a stopper at the joint of the plates, assembling a conductive rubber strip at the joint edge, and mounting a shielding pad between the connector and the mounting plate surface. The present application has the advantages of good performance, low cost, simple operation and good application effect in vibration test and electromagnetic shielding test.

[0025] The above merely describes the preferred embodiments of the present application, and it should be pointed out that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. An electronic circuit board testing chassis, characterized in that, It includes the chassis body and upper and lower pressure blocks. The upper and lower pressure blocks have multiple holes around their perimeter and sides. The chassis body is connected to the upper and lower pressure blocks by screws or bolts. The upper and lower pressure blocks have light holes inside. The upper and lower pressure blocks are connected to the vibration table by screws or bolts passing through the light holes and are locked with nuts.

2. The electronic circuit board testing chassis according to claim 1, characterized in that, There are weight-reducing grooves on the upper and lower pressure blocks.

3. The electronic circuit board testing chassis according to claim 1, characterized in that, The chassis body includes a bottom plate, a front cover, two side covers, a top cover, and a rear cover.

4. The electronic circuit board testing chassis according to claim 3, characterized in that, The bottom plate of the chassis has grooves for installing conductive rubber strips.

5. The electronic circuit board testing chassis according to claim 3, characterized in that, A shielding pad is installed between the base plate of the chassis and the connector.

6. The electronic circuit board testing chassis according to claim 3, characterized in that, The side panels, front panel, and top panel of the chassis have grooves for installing conductive rubber strips.

7. The electronic circuit board testing chassis according to claim 3, characterized in that, Both the bottom plate and the cover plate of the chassis have a stop design.

8. The electronic circuit board testing chassis according to claim 3, characterized in that, The chassis body has weight-reduction grooves on both the bottom plate and the cover plate.

9. The electronic circuit board testing chassis according to claim 3, characterized in that, Heat dissipation fins are installed on each cover plate and bottom plate of the chassis.

10. An electronic circuit board testing chassis according to claim 3, characterized in that, The electronic circuit board is inserted into the bottom plate through the sliding groove of the side cover of the chassis body, locked with locking strips, and pressed with pressure strips on both sides.

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