High-stability coupling shielding box test tool
By introducing rollers, sealing frames, reinforcing frames, and L-shaped plates into the coupling shielding box test fixture, the problem of signal leakage in shielding box testing was solved, achieving stable sealing and structural reinforcement, ensuring the accuracy of test results and convenient operation of the shielding box.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN SHENHUA CENTURY TECH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-05-08
AI Technical Summary
Existing coupling shielding box test fixtures suffer from signal leakage due to gaps at the openings during testing, affecting the accuracy of test results and making it impossible to effectively evaluate the shielding effect.
A highly stable coupling shielding box test fixture was designed. By setting rollers, sealing frames, insert rods, reinforcing frames, L-shaped plates and other structures on the outer box, the stable sealing and structural reinforcement of the shielding box are achieved. It is used in conjunction with a signal generator to test interference signals.
This design achieves stable sealing of the shielding box, improves shielding capability, ensures the accuracy of test results, and facilitates the removal and installation of the shielding box.
Smart Images
Figure CN224216757U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of shielding box technology, specifically a high-stability coupling shielding box test fixture. Background Technology
[0002] A coupling shielding box is a device specifically designed to isolate external signals and protect internal electrical appliances from interference. It enables electrical appliances to operate stably and accurately in an automated environment, ensuring the accuracy of signal transmission and reception. To test the shielding effect of the shielding box, it needs to be placed in a test fixture for testing.
[0003] Such test fixtures often have a chamber inside to hold the shielding box. If there is a gap at the opening of the two, the shielding effect of the signal is difficult to demonstrate, and the test results are directly affected. As a result, it is impossible to know whether the actual function of the shielding box is sufficient to block the signal, and the accuracy is greatly reduced.
[0004] Now, a novel high-stability coupling shielded box test fixture is proposed to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a highly stable coupling shielding box test fixture to solve the problem of signal leakage mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-stability coupling shielding box test fixture, comprising an outer box and a push plate. The push plate is movably connected to the lower part of the inner side of the outer box, and rollers are movably connected to the four corners of the bottom of the push plate. A cover plate is longitudinally fixed to the right side of the push plate, and a sealing frame is fixed around the outer perimeter of the cover plate. Insert rods are fixed at the four corners of the left side of the sealing frame, and insertion holes are provided at the center of the insert rods. A positioning frame is fixed around the right side of the outer box, and screw holes are longitudinally provided at the four corners of the positioning frame. A bolt is threaded into the screw hole. A through groove is provided laterally at the center of the positioning frame. Casters are fixed at the four corners below the surface of the outer box.
[0007] As a further technical solution of this utility model, the insertion rod is horizontally embedded in the through groove, and the bolt runs through the screw hole and the insertion hole.
[0008] As a further technical solution of this utility model, a rectangular cavity is provided in the inner wall of the outer box, and a reinforcing frame is inserted and fixed in the front and rear of the rectangular cavity. Two balls are movably embedded in the four corners of the inner side of the rectangular cavity, and one ball is movably embedded in the four corners of the outer side of the rectangular cavity. A rubber ring is fixed around the front side of the reinforcing frame.
[0009] As a further technical solution of this utility model, the first ball and the second ball are respectively attached to the outer and inner sides of the surface of the reinforcing frame, and the reinforcing frame slides back and forth along the inner wall of the rectangular cavity.
[0010] As a further technical solution of this utility model, a positioning hole is provided between the two sides of the top of the push plate, and an L-shaped plate is respectively attached to the two sides of the top of the push plate. A circular groove is provided inside the side of the L-shaped plate, and a push rod is movably inserted into the circular groove. A push block is fixed to the side of the push rod, and a spring is fixed between the side of the push block and the L-shaped plate. A bolt is threaded to the bottom of the L-shaped plate. A shielding box is placed at the center of the top of the push plate. A controller is fixed to the top of the outer box, and a signal generator is fixed to the top of the inner box.
[0011] As a further technical solution of this utility model, the bottom of the second bolt is embedded in the positioning hole, and the push block is attached to both sides of the shielding box.
[0012] Compared with the prior art, the beneficial effects of this utility model are: the high-stability coupling shielding box test fixture not only achieves reinforced sealing and improved shielding capability, but also makes it easy to handle the shielding box;
[0013] (1) A positioning frame is fixed around the right side of the outer box. The roller drives the push plate and the shielding box into the outer box. The cover plate on the right side is attached to the surface of the outer box. After aligning the sealing frame and the positioning frame, the plug is inserted into the through groove. Then the bolt is screwed into the screw hole in the longitudinal direction to strengthen it and avoid interference at the gap. The signal generator and controller generate interference signals to test whether the shielding box inside has anti-interference ability. After the test, the push plate and the shielding box are taken out through the cover plate.
[0014] (2) By inserting and fixing reinforcing frames in the front and back of the rectangular cavity, if it is necessary to improve the structural strength of the outer box, the reinforcing frame, which is also rectangular, is inserted into the inner wall of the rectangular cavity. The reinforcing frame is also attached to the front end of the outer box, and the rubber rings around it are attached to the front surface of the outer box. It will not easily loosen and is easy to disassemble and install, which can prevent the box from deforming when the outer box is moved by casters.
[0015] (3) By attaching L-shaped plates to both sides of the top of the push plate, move the L-shaped plates along the surface of the push plate, align them with the positioning holes, and screw in the bolts in the longitudinal direction. At this time, the push plates on both sides are symmetrically attached to the left and right sides of the shielding box. The spring is connected between the L-shaped plate and the push block. The push plate that is squeezed will guide the push rod to move along the circular groove, ensuring that the movement of the shielding box to be tested is more stable, and the clamping distance can also be adjusted according to the size of the object. Attached Figure Description
[0016] Figure 1 This is a frontal cross-sectional view of the present invention.
[0017] Figure 2 For the present utility model Figure 1 Enlarged cross-sectional view of a portion of point A in the middle section;
[0018] Figure 3 This is a front view cross-sectional structural diagram of the push plate of this utility model;
[0019] Figure 4 This is a top view cross-sectional structural diagram of the outer casing of this utility model.
[0020] In the diagram: 1. Outer casing; 2. Rectangular chamber; 3. Reinforcing frame; 4. Shielding box; 5. Ball bearing 1; 6. Ball bearing 2; 7. Signal generator; 8. Controller; 9. Positioning frame; 10. Sealing frame; 11. Cover plate; 12. Casters; 13. Push plate; 14. Roller; 15. Bolt 1; 16. Screw hole; 17. Through groove; 18. Insert rod; 19. Insertion hole; 20. Circular groove; 21. Push block; 22. L-shaped plate; 23. Push rod; 24. Bolt 2; 25. Positioning hole; 26. Rubber ring; 27. Spring. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Please refer to Figure 1-. One embodiment of this utility model is provided: a high-stability coupling shielding box test fixture, including an outer box and a push plate. The push plate is movably connected to the lower part of the inner side of the outer box, and rollers are movably connected to the four corners of the bottom of the push plate. A cover plate is longitudinally fixed to the right side of the push plate. A sealing frame is fixed around the outer side of the cover plate, and an insertion rod is fixed at the four corners of the left side of the sealing frame. An insertion hole is provided in the center of the insertion rod. A positioning frame is fixed around the right side of the outer box, and screw holes are longitudinally provided at the four corners of the positioning frame. A bolt is threaded into the screw hole. A through groove is provided in the center of the positioning frame. Casters are fixed at the four corners below the surface of the outer box.
[0023] The insertion rod is horizontally embedded in the through groove, and the bolt runs through the screw hole and the insertion hole;
[0024] Specifically, as shown in Figures 1 and 2, the rollers drive the push plate and the shielding box into the outer box. The cover plate on the right side is attached to the surface of the outer box. After aligning the sealing frame and the positioning frame, the plug is inserted into the through slot. Then, the bolt is screwed into the screw hole in the longitudinal direction to reinforce it and prevent interference at the gap. The signal generator and controller generate interference signals to test whether the internal shielding box has the ability to resist interference.
[0025] A rectangular chamber is provided in the inner wall of the outer box, and a reinforcing frame is inserted and fixed in the front and back of the rectangular chamber. Two ball bearings are movably embedded in the four corners of the inner side of the rectangular chamber, and one ball bearing is movably embedded in the four corners of the outer side of the rectangular chamber. A rubber ring is fixed around the front side of the reinforcing frame. The first ball bearing and the second ball bearing are respectively attached to the outer and inner sides of the surface of the reinforcing frame. The reinforcing frame slides back and forth along the inner wall of the rectangular chamber.
[0026] Specifically, as shown in Figures 1, 2, and 3, if it is necessary to improve the structural strength of the outer casing, a rectangular reinforcing frame is inserted into the inner wall of the rectangular chamber. The reinforcing frame is also attached to the front end of the outer casing, and the surrounding rubber rings are attached to the front surface of the outer casing. It will not easily loosen and is easy to disassemble and install.
[0027] Positioning holes are provided between the two sides of the top of the push plate. L-shaped plates are attached to the two sides of the top of the push plate. A circular groove is provided inside the side of the L-shaped plate. A push rod is movably inserted into the circular groove. A push block is fixed to the side of the push rod. A spring is fixed between the side of the push block and the L-shaped plate. Bolt 2 is threadedly connected to the bottom of the L-shaped plate. A shielding box is placed at the center of the top of the push plate. A controller is fixed to the top of the outer box. A signal generator is fixed to the top of the inner box. The bottom of bolt 2 is embedded in the positioning hole. The push block is attached to the two sides of the shielding box.
[0028] Specifically, as shown in Figures 1 and 2, the L-shaped plate is moved along the surface of the push plate, and after aligning with the positioning hole, the bolt 2 is screwed in longitudinally. At this time, the push plates on both sides are symmetrically attached to the left and right sides of the shielding box, respectively. The spring is connected between the L-shaped plate and the push block. The push plate that is squeezed will guide the push rod to move along the circular groove, ensuring that the movement of the shielding box under test is more stable.
[0029] Working Principle: When using this utility model, if it is necessary to improve the structural strength of the outer casing, a rectangular reinforcing frame is inserted into the inner wall of the rectangular cavity. The reinforcing frame is also attached to the front end of the outer casing, and the rubber rings around it are attached to the front surface of the outer casing, so they will not easily loosen. Then, the L-shaped plate is moved along the surface of the push plate, and after aligning with the positioning hole, the second bolt is screwed in longitudinally. At this time, the push plates on both sides are symmetrically attached to the left and right sides of the shielding box, respectively. The spring is connected between the L-shaped plate and the push block. The push plate under pressure will guide the push rod to move along the circular groove, ensuring that the movement of the shielding box under test is more stable. Finally, the roller drives the push plate and the shielding box into the outer casing. The cover plate on the right side is attached to the surface of the outer casing. After aligning with the sealing frame and the positioning frame, the insertion rod is inserted into the through groove, and the first bolt is screwed into the screw hole longitudinally for reinforcement to avoid interference at the gap. With the help of the signal generator and controller, interference signals are generated to test whether the internal shielding box has the ability to resist interference.
[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A high-stability coupling shielding box test fixture, comprising an outer casing (1) and a push plate (13), characterized in that: A push plate (13) is movably connected to the lower part of the outer box (1), and rollers (14) are movably connected to the four corners of the bottom of the push plate (13). A cover plate (11) is fixed longitudinally on the right side of the push plate (13). A sealing frame (10) is fixed around the outside of the cover plate (11), and a plug rod (18) is fixed at the four corners on the left side of the sealing frame (10). A plug hole (19) is provided at the center of the plug rod (18). A positioning frame (9) is fixed around the right side of the outer box (1), and screw holes (16) are provided longitudinally at the four corners inside the positioning frame (9). A bolt (15) is threaded into the screw hole (16). A through groove (17) is provided transversely at the center of the positioning frame (9). Casters (12) are fixed at the four corners below the surface of the outer box (1).
2. The high-stability coupling shielding box test fixture according to claim 1, characterized in that: The insertion rod (18) is horizontally embedded in the through groove (17), and the bolt (15) passes through the screw hole (16) and the insertion hole (19).
3. The high-stability coupling shielding box test fixture according to claim 1, characterized in that: The inner wall of the outer box (1) is provided with a rectangular cavity (2), and a reinforcing frame (3) is inserted and fixed in the front and back of the rectangular cavity (2). Two ball bearings (6) are movably embedded at the four corners of the inner side of the rectangular cavity (2), and one ball bearing (5) is movably embedded at the four corners of the outer side of the rectangular cavity (2). A rubber ring (26) is fixed around the front side of the reinforcing frame (3).
4. The high-stability coupling shielding box test fixture according to claim 3, characterized in that: The first ball (5) and the second ball (6) are respectively attached to the outer and inner sides of the surface of the reinforcing frame (3), and the reinforcing frame (3) slides back and forth along the inner wall of the rectangular cavity (2).
5. The high-stability coupling shielding box test fixture according to claim 1, characterized in that: A positioning hole (25) is provided between the two sides of the top of the push plate (13). An L-shaped plate (22) is attached to the two sides of the top of the push plate (13). A circular groove (20) is provided inside the side of the L-shaped plate (22). A push rod (23) is movably inserted into the circular groove (20). A push block (21) is fixed to the side of the push rod (23). A spring (27) is fixed between the side of the push block (21) and the L-shaped plate (22). A bolt (24) is threaded to the bottom of the L-shaped plate (22). A shielding box (4) is placed at the center of the top of the push plate (13). A controller (8) is fixed to the top of the outer box (1). A signal generator (7) is fixed to the top inside the outer box (1).
6. The high-stability coupling shielding box test fixture according to claim 5, characterized in that: The bottom of the second bolt (24) is embedded in the positioning hole (25), and the push block (21) is attached to both sides of the shielding box (4).