Quick-plugging high-voltage wiring terminal for testboard

Abstract

The utility model discloses a quick-plugging high-voltage wiring terminal for a test board. The quick-plugging high-voltage wiring terminal comprises a base, a sleeve, a movable shaft, a spring, a limiting nut, a pressing nut, a button and a limiting pin, a wire penetrating hole is formed in the base, a sleeve is arranged in the base, a wire passing hole is formed in the sleeve, a movable shaft is arranged in the sleeve, a kidney-shaped hole is formed in the movable shaft, the wire penetrating hole and the wire passing hole are aligned with the center of the kidney-shaped hole, and it is guaranteed that a wire can rapidly penetrate through the wire penetrating hole to accurately enter the wire passing hole and the kidney-shaped hole of the movable shaft; during use, the button is pressed to enable the movable shaft to move leftwards to a limiting position, a wire passes through the threading hole of the sleeve through the threading hole in the base and enters the kidney-shaped hole of the movable shaft, at the moment, the button is released, the spring enables the movable shaft to move rightwards, the wire is fixed between the movable shaft and the sleeve, and therefore the purpose of quick wiring is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage connection terminals, and particularly to a quick plug-in and unplug high-voltage connection terminal for a test bench. Background Art

[0002] After the production of high-voltage products, functional and performance tests are usually required. Therefore, wires with exposed ends are retained for easy testing. When there are many wire ends, connecting the wire ends of the product line to the test bench becomes a cumbersome task. Most of the high-voltage connection terminals on the market are screw-pressed or thread-pressed. The advantage is reliable and firm connection, and it is not easy to loosen under stress or vibration. The disadvantage is that the operation is cumbersome, the wiring is slow, and there is a risk of air discharge in the high-voltage system; there is also a part of the socket-type plug-in terminals. The advantage of this type of connection terminal is rapid connection and convenient disassembly, and it also has a certain waterproof ability. However, the problem is that the wires at both ends need to be connected to the male head and the female head respectively before plugging in to achieve rapid plugging; there is also a part of the spring-pressed quick connection terminal. This type of terminal can meet the purpose of rapid wiring. However, since the pressing part is metal pressing plastic, there is a situation where the plastic part is pressed out of the groove after multiple uses, resulting in inability to press tightly. And the metal devices of this connection terminal are all exposed to the air, and the high-voltage devices are prone to air discharge.

[0003] When testing high-voltage products, the connection terminal needs to meet the requirements of quick plugging and unplugging, no air discharge, reliable connection, convenient operation, and the performance of repeated plugging and unplugging cannot decline. The above three types of connection terminals cannot all meet the requirements. Content of the Utility Model

[0004] The utility model provides a high-voltage connection terminal that is convenient for quick plugging and unplugging, aiming to solve the problem that the existing connection terminals of the test bench cannot simultaneously meet the requirements of quick plugging and unplugging, no air discharge, reliable connection, convenient operation, and the performance of repeated plugging and unplugging does not decline.

[0005] To achieve the above purpose, the utility model provides a quick plug-in and unplug high-voltage connection terminal for a test bench, including a base, a sleeve, a movable shaft, a spring, a limit nut, a compression nut, a button, and a limit pin; when testing a high-voltage product, one hand presses the button to drive the movable shaft to move to the left to the limit position, and the spring is compressed to the shortest. The other hand passes the wire through the wire-passing hole on the base, through the wire-passing hole of the sleeve, and into the waist-shaped hole of the movable shaft. At this time, the button is released, and the spring makes the movable shaft move to the right, and the wire is fixed between the movable shaft and the sleeve, thus achieving the purpose of rapid wiring.

[0006] Furthermore, the base is made of insulating material, and a wire-passing hole is provided on the upper part. The diameter of the wire-passing hole is slightly larger than the diameter of the wire of the product to be tested, so as to reduce the contact of the wire with the air.

[0007] Furthermore, a sleeve mounting hole is provided at the lower part of the base, and the wire passing hole is perpendicular to the sleeve mounting hole.

[0008] Furthermore, a metal sleeve is provided inside the sleeve mounting hole of the base, and a wire passing hole is provided on the sleeve. The diameter of the wire passing hole is slightly larger than that of the wire passing hole. The center of the wire passing hole of the base is aligned with the center of the wire passing hole of the sleeve to ensure that the wire can quickly pass through the wire passing hole and accurately enter the wire passing hole.

[0009] Furthermore, a metal spring is provided inside the sleeve.

[0010] Furthermore, a metal movable shaft is provided inside the sleeve. The end face of the movable shaft is matched with the spring. A waist hole of the movable shaft is provided on the movable shaft. The diameter of the waist hole of the movable shaft is slightly larger than the diameter of the wire passing hole of the sleeve to ensure that the wire can easily enter the inside of the waist hole of the movable shaft. The direction of the waist hole of the movable shaft is the same as that of the wire passing hole and the wire passing hole.

[0011] Preferably, a pin hole is provided on the movable shaft for installing a limit pin. The length of the limit pin is greater than the diameter of the sleeve. The central axis of the pin hole should be perpendicular to the central axis of the waist hole of the movable shaft.

[0012] Preferably, a waist hole of the sleeve is provided on the side wall of the sleeve. The direction of the waist hole of the sleeve is the same as that of the pin hole of the movable shaft. The limit pin passes through the waist hole of the sleeve and is installed in the pin hole of the movable shaft. The size of the waist hole of the sleeve forms a sliding fit with the limit pin. The length of the waist hole of the sleeve determines the stroke of the movable shaft. The position of the waist hole of the sleeve determines the degree of compression of the spring. At the same time, due to the existence of the limit pin, it is ensured that the movable shaft will not come out of the sleeve.

[0013] Preferably, a limit groove is provided on the side wall of the sleeve mounting hole. The center of the limit groove is perpendicular to the center of the wire passing hole of the base. The depth of the limit groove should be greater than the length of the waist hole of the sleeve. The length of the limit groove is greater than the length of the limit pin. In this way, it is ensured that the stroke of the limit pin will not be blocked by the limit groove. The width of the limit groove is the same as that of the waist hole of the sleeve. During installation, the limit pin falls into the limit groove. At this time, the radial direction of the movable shaft and the sleeve is restricted, ensuring that the centers of the wire passing hole of the sleeve, the waist hole of the movable shaft, and the wire passing hole of the base are consistent.

[0014] Preferably, a limit nut made of insulating material is provided at one end of the sleeve. A matching thread is provided at one end of the sleeve mounting hole. During assembly, by adjusting the limit nut, the center of the wire passing hole of the base is aligned with the center of the wire passing hole of the sleeve. At the same time, the end face of the limit nut can fix the position of one end of the spring.

[0015] Preferably, a central hole is provided in the center of the limit nut to facilitate connection to the test bench.

[0016] Preferably, a flanged nut head is provided on the limit nut to facilitate direct tightening by hand during installation.

[0017] Preferably, a compression nut made of insulating material is provided at the other end of the sleeve. The sleeve mounting hole is provided with a matching thread. The compression nut is provided with a slotted cross recess to facilitate tightening the nut with a tool during installation. The length of the compression nut after tightening should not exceed the base.

[0018] Preferably, the compression nut is provided with a central hole.

[0019] Preferably, a button made of insulating material is provided at the end of the movable shaft. The button passes through the central hole of the compression nut and is threadedly connected to the movable shaft. Pressing the button can control the left and right movement of the movable shaft. At the same time, the button and the compression nut form a relatively airtight space, reducing the risk of high-voltage discharge.

[0020] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0021] When the present utility model is in use, one hand presses the button, and the other hand passes the wire of the test product through the wire passing hole of the base into the waist-shaped hole of the movable shaft. Then release the button, and the spring pushes the movable shaft to fix the wire end between the sleeve and the waist-shaped hole of the movable shaft. Three simple steps complete the connection between the test product and the terminal. At the same time, all conductors of the whole set of devices are wrapped within the insulating base, isolating to a certain extent the risk of air discharge during the test of high-voltage products. And the compression parts are all made of metal, and there will be no serious wear after multiple insertions and extractions, fully meeting the requirements of fast insertion and extraction of the wiring terminal during the test of high-voltage products, no air discharge, reliable connection, convenient operation, and no decline in the performance of multiple repeated insertions and extractions. When testing high-voltage products with multiple wire ends, the present utility model can also form a high-voltage terminal group to ensure complete insulation between each terminal, greatly improving the test efficiency of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present utility model will be further described below with reference to the drawings and embodiments.

[0023] Figure 1 It is a schematic central cross-sectional view of the present utility model.

[0024] Figure 2 It is a schematic central cross-sectional view of the base.

[0025] Figure 3 It is a schematic view of the sleeve.

[0026] Figure 4 It is a schematic view of the movable shaft.

[0027] Figure 5 It is a schematic view of the limit nut.

[0028] Figure 6 It is a schematic view of the compression nut.

[0029] Figure 7 It is a schematic diagram of a button.

[0030] Figure 8 It is a schematic diagram of a limit pin.

[0031] In the figure: 1. Base, 2. Sleeve, 3. Movable shaft, 4. Spring, 5. Limit nut, 6. Compression nut, 7. Button, 8. Limit pin, 11. Base wire passing hole, 12. Sleeve mounting hole, 13. First mating thread, 14. Second mating thread, 15. Limit groove, 21. Sleeve central hole, 22. Sleeve wire passing hole, 23. Sleeve waist hole, 31. Movable shaft waist hole, 32. Pin hole, 33. Movable shaft thread, 51. Limit nut fluted nut head, 52. Limit nut central hole, 53. Limit nut thread, 61. Compression nut thread, 62. Compression nut central hole, 63. Slotted groove, 71. Button fluted nut head, 72. Third mating thread, 73. Fitting cylinder. Specific embodiments

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the following will describe the technical solutions of the present utility model completely in conjunction with the drawings in the embodiments of the present utility model.

[0033] As Figures 1 to 8 shown:

[0034] The present utility model provides a quick plug - and - unplug high - voltage terminal for a test bench, including a base 1, a sleeve 2, a movable shaft 3, a spring 4, a limit nut 5, a compression nut 6, a button 7 and a limit pin 8. Among them, the base 1, the limit nut 5, the compression nut 6 and the button 7 are made of insulating materials; the sleeve 2, the movable shaft 3, the spring 4 and the limit pin 8 are made of metal conductive materials.

[0035] Inside the base 1, there is a cylindrical sleeve mounting hole 12. Perpendicular to the axis direction of the sleeve mounting hole 12, there is a vertical base wire passing hole 11. The diameter of the base wire passing hole 11 is slightly larger than the diameter of the wire of the device to be tested, aiming to reduce the contact with air. On the left side of the sleeve mounting hole 12 is the first mating thread 13, which has the same specification as the limit nut thread 53. On the right side is the second mating thread 14, which has the same specification as the compression nut thread 61. Inside the sleeve 2, there is a sleeve central hole 21 for installing the movable shaft inside it. The central axes of the sleeve wire passing hole 22 and the sleeve waist hole 23 are perpendicular to each other. On the movable shaft 3, there are a vertically - arranged movable shaft waist hole 31 and a pin hole 32.

[0036] During installation, insert the movable shaft 3 into the sleeve 2 from one side of the sleeve waist hole 23. Rotate the movable shaft 3 to align the pin hole 32 with the sleeve waist hole 23. Insert the limit pin 8 from the direction of the sleeve waist hole 23 and make the lengths of both ends of the limit pin the same. Since the length of the limit pin 8 is greater than the diameter of the sleeve 2, the movable shaft 3 is restricted inside the central hole 21 of the sleeve at this time. The length of the sleeve waist hole 23 is the stroke of the movable shaft 3. Then insert the sleeve 2 into the sleeve mounting hole 12 on the right side of the base 1, and at the same time insert the limit pin 8 into the limit groove 15. At this time, the limit pin 8 restricts the rotation of the sleeve 2 and the movable shaft 3 in the radial direction, and the limit groove 15 is perpendicular to the base wire passing hole 11. Move the sleeve 2 left and right, and the sleeve wire passing hole 22 can be aligned with the center of the base wire passing hole 11.

[0037] Then insert the spring 4 into the inside of the central hole 21 of the sleeve from the left side. Turn the knurled nut head 51 of the limit nut to screw the limit nut 5 into the first mating thread 13 until it presses against the left end face of the sleeve 2. At this time, the end face of the limit nut 5 also plays a role in supporting the spring 4. Then use a flat-blade screwdriver to screw the compression nut 6 into the second mating thread 14 from the right side until the sleeve 2 is completely fixed. At this time, the center of the sleeve wire passing hole 22 is aligned with the center of the base wire passing hole 11. Finally, pass the mating cylinder 73 of the button 7 through the central hole 62 of the compression nut, and turn the knurled nut head 71 of the button to mate the third mating thread 72 with the movable shaft thread 33. The mating cylinder 73 and the central hole 62 of the compression nut are in sliding fit. It should be noted that when the button 7 is pressed to the limit position, the sleeve wire passing hole 22 should be within the range of the movable shaft waist hole 31 to facilitate wire threading; after the button is released, the movable shaft waist hole 31 should completely move to the right side of the sleeve wire passing hole 22. During the whole process, the spring 4 is always in a compressed state to ensure that the inserted wire can be pressed tightly. When in use, a wire can be used to pre-connect the sleeve 2 and the test bench through the central hole 52 of the limit nut.

[0038] Through the above design, during testing, press the button 7 to the limit position, insert the lead of the product under test through the base wire passing hole 11. The lead reaches the inside of the movable shaft waist hole 31 through the sleeve wire passing hole 22. After releasing the button, the movable shaft 3 moves to the right under the action of the elastic force of the spring 4. Since the sleeve 2 is in a completely fixed state, the lead is fixed between the sleeve 2 and the movable shaft 3. At this time, the product under test is connected to the test bench. This design fully meets the requirements that the terminal needs to meet for high-voltage product testing, including fast plugging and unplugging, no air discharge, reliable connection, convenient operation, and the performance of repeated plugging and unplugging cannot decline.

[0039] Obviously, the embodiments described above are only a part of the embodiments of the present utility model, rather than all of them. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modifications, substitutions, improvements, etc. made on the basis of the principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A quick plug - and - unplug high - voltage terminal for a test bench, comprising a base (1), a sleeve (2), a movable shaft (3), a spring (4), a limit nut (5), a compression nut (6), a button (7) and a limit pin (8), characterized in that, The base (1), the limit nut (5), the compression nut (6), and the button (7) are made of insulating materials, and the sleeve (2), the movable shaft (3), the spring (4), and the limit pin (8) are made of metal conductive materials.

2. The quick plugging and unplugging high-voltage terminal for a test bench according to claim 1, wherein The upper part of the base (1) is provided with a base wire passing hole (11), the lower part of the base (1) is provided with a sleeve mounting hole (12), the base wire passing hole (11) and the sleeve mounting hole (12) are perpendicular to each other, one side of the sleeve mounting hole (12) is provided with a first mating thread (13), the other side is provided with a second mating thread (14), a limit groove (15) is provided inside the sleeve mounting hole (12), and the limit groove (15) is perpendicular to the base wire passing hole (11).

3. The quick plugging and unplugging high-voltage terminal for a test bench according to claim 2, characterized in that, A sleeve (2) is provided inside the sleeve mounting hole (12), a sleeve center hole (21) is provided at the center of the sleeve (2), a sleeve wire passing hole (22) is provided on the sleeve (2), a sleeve waist hole (23) is provided on the side wall of the sleeve (2), and the central axes of the sleeve wire passing hole (22) and the sleeve waist hole (23) are perpendicular to each other.

4. The quick-disconnect high-voltage terminal for a test bench according to claim 3, characterized in that, A spring (4) is provided inside the sleeve center hole (21).

5. The quick plug - and - unplug high - voltage terminal for a test bench according to claim 3, wherein, A movable shaft (3) is provided inside the sleeve center hole (21), a movable shaft thread (33) is provided on one side of the movable shaft (3), the button (7) is connected to the movable shaft (3) through a third mating thread (72), a movable shaft waist hole (31) is provided on the movable shaft (3), a pin hole (32) is provided on the side wall of the movable shaft (3), the central axes of the movable shaft waist hole (31) and the pin hole (32) are perpendicular to each other, a limit pin (8) is provided inside the pin hole (32), and the base wire passing hole (11), the sleeve wire passing hole (22), and the movable shaft waist hole (31) are centered and aligned.

6. The quick plug - and - unplug high - voltage terminal for a test bench according to claim 3, characterized in that, A limit nut (5) is provided at one end of the sleeve (2), and a compression nut (6) is provided at the other end. The limit nut (5) is provided with a limit nut center hole (52) and a limit nut fluted nut head (51), and the compression nut (6) is provided with a compression nut center hole (62) and a slotted head (63).

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