CN211121865U - Universal circuit board clamp for vibration test board - Google Patents
Universal circuit board clamp for vibration test board Download PDFInfo
- Publication number
- CN211121865U CN211121865U CN201922441006.3U CN201922441006U CN211121865U CN 211121865 U CN211121865 U CN 211121865U CN 201922441006 U CN201922441006 U CN 201922441006U CN 211121865 U CN211121865 U CN 211121865U
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- strip
- circuit board
- vibration test
- bulge
- briquetting
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Abstract
The utility model discloses a circuit board universal fixturing for vibration test platform, parallel arrangement is in two spacing of vibration test platform bottom plate edge around including, be connected with two at least about position adjustable activity strips perpendicularly between two spacing, there are a plurality of briquettings that can wind the housing screw axle center rotation through housing screw symmetric connection on adjacent activity strip, be type of calligraphy structure with the activity strip cross section of briquetting upper and lower correspondence, the height of bulge is less than the thickness of waiting to measure circuit board on the activity strip, the length on the long limit of briquetting is greater than the width of bulge on the activity strip, the length of briquetting minor face is not more than the width of bulge on the activity strip, the briquetting that stretches out activity strip bulge is moved down by housing screw drive and clamps the circuit board that will be measured on the bottom surface of adjacent activity strip bulge. The utility model can be used for the vibration test clamping of circuit boards with various sizes, and improves the universality; the quick assembly of the circuit board can be realized, the production efficiency is greatly improved, and the labor cost is reduced.
Description
Technical Field
The utility model relates to a circuit board vibration test technical field especially relates to a circuit board universal fixturing for vibration test platform.
Background
The circuit board is widely applied in various industries, and is widely applied in the fields of traditional industrial control, novel electronic products, automobile military industry and the like. The circuit board realizes the electrical connection among all components in the circuit, replaces complex wiring, reduces the wiring workload in the traditional mode, and all the components are welded on one substrate, thereby reducing the volume of the whole machine and lowering the product cost. Because the components and parts size is less, arrange densely, be difficult for device inspection one by one, but the components and parts probably have pin rosin joint during welding, need carry out vibration test to the circuit board, screen the rosin joint product. Meanwhile, when the circuit board is used in many fields, severe working conditions such as large vibration and impact exist, the actual working conditions need to be simulated for vibration and impact testing, the circuit board also needs to be subjected to vibration testing, and the limit of the circuit board is tested.
Because the size range of the circuit board is wide, and the shapes and the sizes are different, when the circuit board is detected every time, a specific clamp needs to be customized for each circuit board, and the circuit board can be fixed on the vibration test board. Therefore, the detection period is prolonged, the efficiency is reduced, and the cost is increased.
In view of the above, in order to overcome the defects in the prior art, it is an urgent technical problem to be solved in the art to provide a novel universal fixture for a circuit board for a vibration test stand.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's weak point, provide a good, convenient to use's circuit board universal fixturing for vibration test platform of commonality.
The utility model provides a circuit board universal fixturing for vibration test platform, parallel arrangement is in two spacing of vibration test platform bottom plate edge around including, be connected with two at least about position adjustable activity strips perpendicularly between two spacing, there are a plurality of briquettings that can wind the housing screw axle center rotation through housing screw symmetric connection on adjacent activity strip, be type of calligraphy structure with the activity strip cross section of briquetting upper and lower correspondence, the thickness of bulge highly is less than waiting to measure circuit board on the activity strip, the length on the long limit of briquetting is greater than the width of bulge on the activity strip, the length of briquetting minor face is not more than the width of bulge on the activity strip, the briquetting that stretches out activity strip bulge is moved down by housing screw drive and clamps the circuit board that will be measured on the bottom surface of adjacent activity strip bulge.
The limiting strips are provided with longitudinal strip holes, and the two ends of the movable strip penetrate through the longitudinal strip holes through locking screws and are arranged between the two limiting strips in an adjustable left-right position.
The whole limiting strip is n-shaped, the whole movable strip is n-shaped, the longitudinal long strip hole is formed in the horizontal section of the limiting strip, and two ends of the movable strip are connected to the bottom of the horizontal section of the limiting strip through locking screws.
In order to facilitate the screwing by hands without tools, the locking screw is a knurled screw with a high head.
In order to facilitate the screwdriving without a tool, the compression screw is a knurled screw with a high head.
In order to avoid the electric leakage phenomenon after the circuit board is pressed and realize the power-on test function, the cross section of the movable strip at the position corresponding to the upper part and the lower part of the pressing block is of an integrated convex structure, and the pressing block and the movable strip are both made of insulating materials.
In order to avoid the phenomenon of electric leakage after the circuit board is pressed and realize the function of power-on test, the bottom of the movable strip at the position corresponding to the pressing block up and down is connected with a detachable lower limiting block, the cross section of the lower limiting block is in the shape of L, the lower limiting block is wrapped on the movable strip to form a combined convex structure, and the pressing block and the lower limiting block are both made of insulating materials.
In order to facilitate the quick positioning and installation of the lower limiting block, a plurality of grooves are arranged on the bottom surface and the side surface of the movable strip at the position corresponding to the upper part and the lower part of the pressing block, convex edges are arranged on the lower limiting block at the position corresponding to each groove, and the lower limiting block is clamped at the bottom of the movable strip through the matching of the convex edges and the grooves.
The utility model discloses a set up the activity strip into the adjustable form of left and right sides position to set up a plurality of briquettings on each activity strip, during the use, only need according to the width adjustment activity strip of the circuit board that awaits measuring distance between, just can accomplish the installation of the not unidimensional circuit board and fix, can realize the independent test of great monolithic circuit board, can realize the simultaneous test of a plurality of fritters circuit board again, the commonality is strong; the pressing block is designed into shapes with different side lengths, the pressing screw does not need to be completely unscrewed, and the circuit board can be put in or taken out only by rotating the pressing block until the short side of the pressing block is vertical to the axis of the movable strip, so that the mounting and dismounting are faster. The utility model can be used for the vibration test clamping of circuit boards with various sizes, and improves the universality; the processing of a plurality of clamps with different specifications can be avoided, the production time of the clamps is saved, the construction period is shortened, the manufacturing materials are saved, and the management cost is reduced; the operation is convenient, the fast installation of the circuit board can be realized, the production efficiency is greatly improved, and the labor cost is reduced.
Drawings
Fig. 1 is a schematic view of a shaft side structure in a use state of the present invention.
Fig. 2 is a schematic sectional view at a-a in fig. 1.
Fig. 3 is a schematic view of an enlarged cross-sectional structure at B-B in fig. 1.
Fig. 4 is an enlarged partial sectional view of the structure at C-C in fig. 1.
Fig. 5 is a schematic view of the axial side structure of the utility model in use.
The labels shown in the figures and the corresponding component names are:
1. a limiting strip; 11. a longitudinal elongated hole; 12. mounting holes;
2. a movable bar; 21. a screw mounting hole; 22. a groove;
3. a compression screw;
4. briquetting;
5. locking the screw;
6. a lower limiting block; 61. a convex edge;
7. a vibration test platform bottom plate;
8. and the circuit board to be tested.
Detailed Description
Example one
As can be seen from the figures 1 to 5, the universal fixture for the circuit board of the vibration test board of the utility model is arranged on the bottom plate 7 of the vibration test board and comprises two limit strips 1, two movable strips 2, six compression screws 3, six pressing blocks 4, four locking screws 5 and six lower limit blocks 6,
the whole limiting strip 1 is in an inverted U shape, a longitudinal long hole 11 penetrating through the upper surface and the lower surface is milled on the horizontal section in the middle of the limiting strip 1, mounting holes 12 penetrating through the upper surface and the lower surface are milled on the vertical sections at the two ends of the limiting strip 1, the two limiting strips 1 penetrate through the mounting holes 12 through screws and are respectively and horizontally mounted at the front edge and the rear edge of the bottom plate 7 of the vibration test bench, and the two limiting strips 1 are arranged on the bottom plate 7 of the vibration test bench in a front-back parallel mode;
the movable strip 2 is integrally in a shape like a Chinese character 'ji', screw mounting holes 21 penetrating through the upper surface and the lower surface of the movable strip 2 are milled on the horizontal sections at the two ends of the bottom of the movable strip 2, the two movable strips 2 are vertically arranged between the two limiting strips 1, the horizontal sections at the two ends of the bottom of each movable strip 2 are respectively inserted into the lower part of the horizontal section in the middle of the two limiting strips 1, the movable strip 2 is arranged between the two limiting strips 1 in a sliding manner by adjusting the left and right positions of the horizontal ends at the two ends of the bottom of the movable strip 2, the longitudinal strip hole 11 is vertically communicated with the screw mounting holes 21, and the four locking screws 5 penetrate through the longitudinal strip hole 11 to be in threaded connection with the corresponding screw mounting holes 21 so as;
each pressing block 4 is of a cuboid structure and made of an insulating material, six pressing blocks 4 are symmetrically arranged on the two movable strips 2 in a left-right mode in a pairwise mode, the pressing blocks 4 are sleeved outside the compression screws 3 in a one-to-one mode and can rotate around the axes of the compression screws 3, the bottoms of the compression screws 3 are in threaded connection with the movable strips 2, and the pressing blocks 4 are rotatably installed on the movable strips 2 through the compression screws 3;
the cross section of each lower limiting block 6 is L characters and made of insulating materials, each lower limiting block 6 is detachably mounted at the bottom of the movable strip 2 below each pressing block 4 one by one through a screw, the lower limiting block 6 covers the bottom surface and two side surfaces of the movable strip 2, the cross section formed by the combination of the lower limiting block 6 and the movable strip 2 is of a convex structure, the distance from the top surface of the lower limiting block 6 to the top surface of the movable strip 2 is the height of a convex part formed by combination, and the distance is smaller than the thickness of a circuit board 8 to be tested;
the circuit board 8 to be tested is placed on the bottom surface of the protruding part of the adjacent movable strip 2, the compression screw 3 rotates and moves downwards to drive the pressing block 4 to press downwards, and the part of the pressing block 4 extending out of the protruding part clamps the circuit board to be tested between the adjacent movable strips 2.
As can be seen from fig. 3 and 4, the bottom and the side of the movable bar 2 corresponding to the upper and lower parts of the pressing block 4 are provided with a plurality of grooves 22, the lower limiting block 6 corresponding to each groove 22 is provided with a convex edge 61 which is matched with the lower limiting block, and the lower limiting block 6 is inserted into the corresponding groove 22 through the convex edge 61 and clamped at the bottom of the movable bar 2 in a front-back positioning manner.
The utility model discloses in, housing screw 3 and locking screw 5 all adopt GB834 annular knurl cap screw.
The utility model discloses in, the quantity of activity strip 2 and the quantity of briquetting 4 on the single activity strip 2 can be installed according to actual conditions.
Use the utility model discloses when testing a plurality of small-size circuit boards with the specification, activity strip 2 can adopt a plurality of combinations to use, and its maximum quantity that can test circuit board simultaneously is:
F＝(a-1)×b，
wherein a is the number of the movable strips 2, and b is the number of the press blocks 4 on a single movable strip 2, as shown in fig. 5, the maximum number of the circuit boards which can be tested simultaneously is F (5-1) × 3-12.
Example two
The difference between the present embodiment and the first embodiment is that the cross section of the movable strip 2 at the upper and lower corresponding positions of the pressing block 4 is of an integral convex structure, and the pressing block 4 and the movable strip 2 are both made of insulating materials.
The utility model discloses a use method, including following step:
s1, loosening the locking screws 5, and adjusting the distance between the adjacent movable strips 2 according to the front and back side length of the circuit board to be tested to enable the left and right sides of the circuit board to be tested to be positioned right above the bottom surfaces of the convex parts of the adjacent movable strips 2; screwing the locking screw 5 to fix the left and right positions of the limiting strip 2;
s2, loosening the compression screw 3, and rotating the pressing block 4 to enable the short side of the pressing block 4 to be perpendicular to the axis of the movable strip 2;
s3, placing the circuit board to be tested on the bottom surface of the convex part of the adjacent movable strip 2;
s4, rotating the pressing blocks 4 on the left side and the right side of the circuit board to be tested, and enabling the long sides of the pressing blocks 4 to be perpendicular to the axis of the movable strip 2;
s5, tightly screwing the compression screws 3 on the left side and the right side of the circuit board to be tested, and allowing the pressing block 4 to move downwards along with the compression screws 3 to clamp the circuit board to be tested on the adjacent movable strips 2;
and S6, loosening the compression screw 3 after the vibration test is finished, and rotating the pressing block 4 to enable the short side of the pressing block 4 to be perpendicular to the axis of the movable strip 2, so that the circuit board can be taken out.
Claims (8)
1. The utility model provides a circuit board universal fixturing for vibration test platform which characterized in that: parallel arrangement is in two spacing (1) of vibration test platform bottom plate edge around including, position adjustable activity strip (2) about two at least perpendicular connections have, there are a plurality of briquetting (4) that can wind the rotatory in housing screw axle center through housing screw (3) symmetric connection on adjacent activity strip, be type structure for protruding with the activity strip cross section of briquetting upper and lower correspondence department, the height of bulge is less than the circuit board thickness of waiting to measure on the activity strip, the length on the long limit of briquetting is greater than the width of bulge on the activity strip, the length of briquetting minor face is not more than the width of bulge on the activity strip, the briquetting that stretches out activity strip bulge is driven by housing screw and is moved down the circuit board that awaits measuring and clamp on the bottom surface of adjacent activity strip bulge.
2. The universal fixture for circuit boards of vibration test benches as claimed in claim 1, wherein: the limiting strips are provided with longitudinal strip holes (11), and the two ends of the movable strip penetrate through the longitudinal strip holes through locking screws (5) and are arranged between the two limiting strips in an adjustable left-right position.
3. The universal fixture for circuit boards of claim 2, wherein: the whole limiting strip is n-shaped, the whole movable strip is n-shaped, the longitudinal long strip hole is formed in the horizontal section of the limiting strip, and two ends of the movable strip are connected to the bottom of the horizontal section of the limiting strip through locking screws.
4. The universal fixture for circuit boards of claim 2, wherein: the locking screw is a knurled screw with a high head.
5. The universal fixture for circuit boards of vibration test benches as claimed in claim 1, wherein: the compression screw is a knurled screw with a high head.
6. The universal fixture for circuit boards of vibration test benches as claimed in claim 1, wherein: the cross section of the movable strip at the position corresponding to the upper part and the lower part of the pressing block is of an integrated convex structure, and the pressing block and the movable strip are both made of insulating materials.
7. The universal clamp for the circuit board of the vibration test bench according to claim 1, wherein the bottom of the movable strip at the position corresponding to the upper and lower parts of the pressing block is connected with a detachable lower limiting block (6), the cross section of the lower limiting block is L-shaped, the lower limiting block is wrapped on the movable strip to form a combined convex-shaped structure, and the pressing block and the lower limiting block are both made of insulating materials.
8. The universal fixture for circuit boards of claim 7, wherein: the bottom surface and the side surface of the movable strip corresponding to the upper part and the lower part of the pressing block are provided with a plurality of grooves (22), the lower limiting block corresponding to each groove is provided with a convex edge (61), and the lower limiting block is clamped at the bottom of the movable strip through the matching of the convex edge and the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922441006.3U CN211121865U (en) | 2019-12-30 | 2019-12-30 | Universal circuit board clamp for vibration test board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922441006.3U CN211121865U (en) | 2019-12-30 | 2019-12-30 | Universal circuit board clamp for vibration test board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211121865U true CN211121865U (en) | 2020-07-28 |
Family
ID=71688993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922441006.3U Active CN211121865U (en) | 2019-12-30 | 2019-12-30 | Universal circuit board clamp for vibration test board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211121865U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465853A (en) * | 2021-07-05 | 2021-10-01 | 中国电子科技集团公司第五十八研究所 | Vibration clamp for CCGA (ceramic column grid array) double-sided cavity integrated circuit |
| CN113916479A (en) * | 2021-09-28 | 2022-01-11 | 河北汉光重工有限责任公司 | Triaxial vibration device and method capable of fixing circuit boards of various sizes |
-
2019
- 2019-12-30 CN CN201922441006.3U patent/CN211121865U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465853A (en) * | 2021-07-05 | 2021-10-01 | 中国电子科技集团公司第五十八研究所 | Vibration clamp for CCGA (ceramic column grid array) double-sided cavity integrated circuit |
| CN113916479A (en) * | 2021-09-28 | 2022-01-11 | 河北汉光重工有限责任公司 | Triaxial vibration device and method capable of fixing circuit boards of various sizes |
| CN113916479B (en) * | 2021-09-28 | 2024-04-12 | 河北汉光重工有限责任公司 | Triaxial vibration device and method capable of fixing circuit boards with various sizes |
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