CN212275889U

CN212275889U - Fixing device for printed board vibration test

Info

Publication number: CN212275889U
Application number: CN202020550477.8U
Authority: CN
Inventors: 李鹏; 黎正华
Original assignee: Hunan Aerospace Institute of Mechanical and Electrical Equipment and Special Materials
Current assignee: Hunan Aerospace Institute of Mechanical and Electrical Equipment and Special Materials
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2021-01-01
Anticipated expiration: 2030-04-14

Abstract

The utility model provides a fixing device for printing board vibration test, includes the shaking table keysets, the mounting hole has been seted up on the shaking table keysets, each equal detachably of mounting hole department is fixed with the support of seting up first through-hole along length direction, the one end of support is equipped with the support column. The utility model discloses a set up first through-hole at the length direction of support for the support can change the position of support column on the shaking table keysets when moving along length direction, thereby makes the printing board that the support column can fix and have different specifications, realizes this fixing device's universalization demand, reduce cost.

Description

Fixing device for printed board vibration test

Technical Field

The utility model belongs to the technical field of the environmental test engineering, concretely relates to a fixing device for printed board subassembly vibration environment screening test.

Background

In the production process of high-reliability electronic equipment, in order to ensure the reliability of products, vibration tests need to be carried out on printed board assemblies welded in the equipment, the screening of poor welding spots of components is completed, and whether the products have the performance of bearing various vibration environments is determined. In the vibration test, because most of plate-level products cannot be directly fixed on a vibration table, a special tool is required to be used for the vibration test. At present, a mode of punching and installing a support column of a printed board on a metal switching tooling board is generally adopted, and a vibration environment test can be carried out after the printed board assembly is fixed on the support column.

Because the printed board assembly has more specifications such as shape, size and the like, holes at different positions need to be formed in the vibration table switching tool aiming at different types of printed board assemblies, the universal requirement is difficult to realize, and the test period and the cost are increased.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the fixing device for the printed board vibration test is suitable for printed boards of different specifications and has universality.

The utility model adopts the technical proposal that: the utility model provides a fixing device for printing board vibration test, includes the shaking table keysets, the mounting hole has been seted up on the shaking table keysets, each equal detachably of mounting hole department is fixed with the support of seting up first through-hole along length direction, the one end of support is equipped with the support column.

In the scheme, the first through hole is formed in the support along the length direction, so that the position of the support column on the adapter plate of the vibration table can be changed when the support moves along the length direction, printed boards with different specifications can be fixed by the support column, the universal requirement of the fixing device is met, and the cost is reduced.

Preferably, the bracket is fixed on the adapter plate of the vibration table through a screw, and the screw can move in the first through hole along the length direction of the bracket.

Preferably, in order to prevent the support from rotating in the vibration test, a limiting clamp is further arranged between the support and the screw, a second through hole for the screw to pass through is formed in the middle of the limiting clamp, downward vertical portions are arranged at two ends of the limiting clamp, and the support is located between the two vertical portions.

Preferably, support column and support integrated into one piece, integrated into one piece's processing mode is compared and is adopted both to pass through mode rigidity that the screw is fixed bigger, the practicality is strong.

Preferably, the vibration table adapter plate, the support and the support column are all made of metal materials, so that the rigidity of the whole fixing device is guaranteed.

The utility model discloses an intentional effect is: the problem of mounting and fixing printed board assemblies with different sizes in the vibration test process is effectively solved, the universalization requirement is met, and the vibration test device is simple in structure and high in practicability; all parts of the device are made of metal materials such as aluminum alloy and the like, so that the device is high in structural rigidity and relatively light in weight; the threaded connection is adopted, so that the assembly is quick, simple and economic, the interchangeability is strong, the higher structural rigidity can be ensured, and only the screws need to be replaced after the long-time use; through modal test simulation calculation, the first-order natural frequency of the device can reach more than 2000Hz, is far higher than the highest test frequency of the printed board assembly, and structural resonance coupling of the device and a product cannot occur within the test frequency range.

Drawings

Fig. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the present invention in use;

fig. 3 is a front view of the bracket of the present invention;

fig. 4 is a top view of the bracket of the present invention;

fig. 5 is a front view of the middle stop clip of the present invention;

fig. 6 is a bottom view of the middle stop clip of the present invention.

Detailed Description

The invention will be further explained with reference to the drawings and the specific embodiments.

As shown in fig. 1 to 6, a fixing device for a printed board vibration test includes a vibration table adapter plate 1, a bracket 2, a support column 3, a limiting clamp 4 and a screw 5, wherein the limiting clamp 4 includes a second through hole 42 located in the middle and vertical portions 41 located at two ends. The support column 3 is located at one end of the support 2, integrally formed with the support 2 after being integrally processed, and used for mounting the printed board assembly 6. Spacing clamp 4 is placed between screw 5 and support 2, and screw 5 passes first through-hole 21 on support 2 in proper order, and second through-hole 42 on the spacing clamp fixes support 2 and spacing clamp 4 on shaking table keysets 1 to fix printed board subassembly 6 on shaking table keysets 1 through support column 3, and at the same time, support 2 is restricted between two vertical portions 41 of spacing clamp 4, in order to prevent that support 2 from taking place to rotate when the vibration test.

The vibration table adapter plate 1, the support 2, the support column 3 and the limiting clamp 4 can be made of metal rigid materials such as aluminum alloy and the like.

The utility model discloses when using, because different printing board subassembly 6 have the mounting hole of different positions, consequently at first will remove support 2 and adjust the position that support column 3 is located shaking table keysets 1, adjust suitable back rethread

spacing clamp

4 and 5 fixed bolsters of screw 2, then will print board subassembly 6 and install on support column 3, will shake the whole parallel mount of table keysets 1 and carry out vibration test on the shaking table after the completion again. After the test is finished, the printed board assemblies with other specifications can be directly disassembled and reinstalled.

Table 1 is right the utility model discloses the experiment that goes on verifies, through increase or customization not unidimensional support 2, can satisfy not unidimensional printing board subassembly 6's the fixed requirement of vibration test. Therefore, the utility model discloses the practicality is strong, can directly apply to the vibration test of various electronic equipment, high reliability electron electrical product printed board subassembly, possess comparatively wide application prospect.

TABLE 1 corresponding relationship between printed board assemblies and the number and length of the supports

Claims

1. The utility model provides a fixing device for printing board vibration test, includes shaking table keysets (1), a plurality of mounting holes have been seted up on shaking table keysets (1), its characterized in that, each equal detachably of mounting hole department is fixed with support (2) of seting up first through-hole (21) along length direction, the one end of support (2) is equipped with support column (3).

2. The fixing device for the vibration test of the printed board as claimed in claim 1, wherein the support (2) is fixed on the vibration table adapter plate (1) by a screw (5), and the screw (5) can move in the first through hole (21) along the length direction of the support (2).

3. The fixing device for the printed board vibration test is characterized in that a limiting clamp (4) is further arranged between the support (2) and the screw (5), a second through hole (42) for the screw (5) to pass through is formed in the middle of the limiting clamp (4), downward vertical portions (41) are arranged at two ends of the limiting clamp (4), and the support (2) is located between the two vertical portions (41).

4. A fixing device for a vibration test of a printed board according to claim 1, wherein the supporting column (3) is formed integrally with the support (2).

5. The fixing device for the printed board vibration test is characterized in that the vibration table adapter plate (1), the bracket (2) and the supporting column (3) are made of metal materials.