A connector of high-density integrated self-short-circuit enhanced voltage-withstanding structure

Abstract

This invention relates to the field of connector technology and discloses a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure, including a plug assembly and a socket assembly. The plug assembly includes a pin cover, a pin insulator, pins, and a push rod. The socket assembly includes a socket, a hole insulator, a short-circuit protective sleeve, a hole cover, a spring, a short-circuit cap, and a short-circuit post. The pin cover is mated to the pin insulator, the hole insulator is mated to the hole cover, and the short-circuit protective sleeve is installed between the hole insulator and the hole cover. This invention improves the creepage distance in a limited space by using the boss design of the short-circuit protective sleeve and the groove design of the hole insulator, thereby improving the withstand voltage performance of the product without changing the original volume. The push rod design ensures the short-circuit post advances a certain distance, allowing the short-circuit post to separate the short-circuit cap from the adjacent contact, thus releasing the connector from a short-circuit state. When the plug and socket need to be separated, the short-circuit cap, under the action of the spring, puts the socket in an automatic short-circuit state.

Description

Technical Field

[0001] This invention relates to the field of connector technology, and more particularly to a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure. Background Technology

[0002] Circuit breakers, as the most important protective electrical appliances in low-voltage power distribution systems, are widely used in industrial power distribution, communication base stations, and new energy power generation systems. Their basic function is to automatically cut off the current when overload, short circuit, or other faults occur in the circuit, protecting the safety of downstream lines and equipment. Within the internal structure of a circuit breaker, connectors serve as the electrical connection between the main circuit and the control module. With the miniaturization of circuit breakers, internal space is extremely limited. Traditional connectors with short-circuit protection functions often use independent short-circuit springs or external short-circuit modules, resulting in complex structures, large space requirements, and difficulty in meeting the demands of high-density integration. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of existing technologies and propose a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure. The short-circuit function is built into the connector body, which can automatically realize internal short-circuit protection during connector insertion and removal, thus achieving the requirements of miniaturization, self-short-circuit, low cost and high reliability of this type of connector.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure, including a plug assembly and a socket assembly. The plug assembly includes a pin cover, a pin insulator, pins, and a push rod. The socket assembly includes a socket, a hole insulator, a short-circuit protective sleeve, a hole cover, a spring, a short-circuit cap, and a short-circuit post. The pin cover is mated with the pin insulator, the hole insulator is mated with the hole cover, and the short-circuit protective sleeve is installed between the hole insulator and the hole cover. The needle insulator is provided with a plurality of push rod grooves, the push rod is installed in the push rod grooves, and the push rod grooves are also provided on both sides of the push rod grooves. The pin insertion grooves are provided with pin contact flat positions, and the pins are installed in the pin insertion grooves. One side of the hole insulator is provided with a hole insulator positioning key, and the hole cover plate is provided with a hole cover plate positioning key corresponding to the hole insulator positioning key, so as to facilitate the hole cover plate and the hole insulator to mate. One side of the pin insulator is provided with a pin insulator positioning key corresponding to the hole insulator positioning key, so as to facilitate the plug assembly and the socket assembly to mate and engage. The hole insulator is provided with a plurality of short-circuit post holes, and the short-circuit posts are installed in the short-circuit post holes. The two sides of the short-circuit post holes are provided with socket slots, and the socket slots are provided with socket contact flats. The sockets are installed in the socket slots. When the plug assembly and the socket assembly are mated and engaged, the sockets engage and engage with the pins installed in the pin slots of the pin insulator. The hole insulator is also provided with a groove in the middle. The hole cover plate is provided with a pressing cylindrical platform, the short-circuit protection sleeve is provided with a short-circuit cavity, the short-circuit protection sleeve is installed on one side of the hole insulator, the short-circuit protection sleeve is provided with a boss in the middle that matches the groove, the short-circuit cap is installed in the short-circuit cavity, the hole cover plate is installed on the other side of the short-circuit protection sleeve, one end of the spring is connected to the short-circuit cap, and the other end is sleeved on the pressing cylindrical platform of the hole cover plate.

[0005] Furthermore, the short-circuit cap is provided with a spring cavity, one end of the spring is inserted into the spring cavity of the short-circuit cap, and the other end is fitted onto the pressing cylinder of the hole cover plate.

[0006] Furthermore, the number of top rod slots and the number of short-circuit post holes are the same, and their positions correspond one-to-one; the number of pin slots and the number of socket slots are the same, and their positions correspond one-to-one.

[0007] Furthermore, the number of short-circuit cavities and the number of short-circuit post holes are the same, and their positions correspond one-to-one.

[0008] Furthermore, the depth of the socket contact flat is lower than the depth of the socket groove, and the depth of the pin contact flat is lower than the depth of the pin groove.

[0009] The present invention has the following beneficial effects: 1. This invention discloses a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure. Through the protrusion design of the short-circuit protective sleeve and the groove design of the hole insulator, the creepage distance within a limited space is increased, improving the product's withstand voltage performance without changing the original volume. When the plug and socket are mated, the optimized length of the push rod ensures the short-circuit post is pushed forward a sufficient distance, allowing the short-circuit post to separate the short-circuit cap from the adjacent contact, thus releasing the connector from the short-circuit state. When the plug and socket need to be separated, the short-circuit cap, under the action of a spring, puts the socket into an automatic short-circuit state.

[0010] 2. The present invention has contact flats designed inside both the hole insulator and the pin insulator. At the same time, the depth of the contact flats is lower than the depth of the inner hole of the contact. On the one hand, this ensures that the welding orientation of the contact and the cable is consistent, and on the other hand, it increases the creepage distance, improves the withstand voltage performance, and realizes the miniaturization of the connector. Attached Figure Description

[0011] Figure 1 This is an overall cross-sectional view of a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure according to the present invention; Figure 2 This is a schematic diagram of the insulator structure of the connector's central hole, which is a high-density integrated self-short-circuit enhanced withstand voltage structure according to the present invention. Figure 3 This is a schematic diagram of the pin insulator structure of a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure according to the present invention; Figure 4 This is a schematic diagram of the connector bore cover plate structure of a high-density integrated self-short-circuit enhanced withstand voltage structure according to the present invention; Figure 5 This is a schematic diagram of the short-circuit protection sleeve structure in a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure according to the present invention; Legend: 1. Needle cover plate; 2. Needle insulator; 21. Needle insulator positioning key; 22. Needle slot; 23. Push rod slot; 24. Needle contact flat position; 3. Needle; 4. Socket; 5. Hole insulator; 51. Socket slot; 52. Hole insulator positioning key; 53. Short circuit post hole; 54. Socket contact flat position; 55. Groove; 6. Short circuit protection sleeve; 61. Boss; 62. Short circuit cavity; 7. Hole cover plate; 71. Pressing cylinder platform; 72. Hole cover plate positioning key; 8. Spring; 9. Short circuit cap; 10. Short circuit post; 11. Push rod. Detailed Implementation

[0012] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0013] Reference Figure 1-5The present invention provides an embodiment of a connector with a high-density integrated self-short-circuit enhanced withstand voltage structure, comprising a plug assembly including a pin cover plate 1, a pin insulator 2, a pin 3, and a push rod 11; and a socket assembly including a socket 4, a socket insulator 5, a short-circuit protective sleeve 6, a socket cover plate 7, a spring 8, a short-circuit cap 9, and a short-circuit post 10, wherein the pin cover plate 1 is mated with the pin insulator 2, the socket insulator 5 is mated with the socket cover plate 7, and the short-circuit protective sleeve 6 is installed between the socket insulator 5 and the socket cover plate 7; The needle insulator 2 is provided with a plurality of push rod grooves 23, the push rod 11 is installed in the push rod grooves 23, and the push rod grooves 23 are also provided on both sides of the push rod grooves 23. The pin insertion grooves 22 are provided with pin contact flat positions 24, and the pins 3 are installed in the pin insertion grooves 22. One side of the hole insulator 5 is provided with a hole insulator positioning key 52, and the hole cover plate 7 is provided with a hole cover plate positioning key 72 corresponding to the hole insulator positioning key 52, so as to facilitate the hole cover plate 7 and the hole insulator 5 to mate. One side of the pin insulator 2 is provided with a pin insulator positioning key 21 corresponding to the hole insulator positioning key 52, so as to facilitate the mating of the plug assembly and the socket assembly. The hole insulator 5 is provided with a plurality of short-circuit post holes 53, and the short-circuit post 10 is installed in the short-circuit post hole 53. The two sides of the short-circuit post hole 53 are provided with a socket slot 51, and the socket slot 51 is provided with a socket contact flat 54. The socket 4 is installed in the socket slot 51. When the plug assembly and the socket assembly are mated and mated, the socket 4 mates and mats with the pin 3 installed in the pin slot 22 of the pin insulator 2. The direction of the welding line is aligned by the socket contact flat 54 and the pin contact flat 24, which increases the creepage distance and improves the withstand voltage performance.

[0014] The hole insulator 5 is provided with a groove 55 in the middle, and the short-circuit protection sleeve 6 is provided with a boss 61 that matches the groove 55 in the middle. Through the design of the boss 61 of the short-circuit protection sleeve 6 and the groove 55 of the hole insulator 5, the creepage distance in a limited space is increased, and the pressure resistance of the product is improved without changing the original volume.

[0015] The hole cover plate 7 is provided with a pressing cylindrical platform 71, the short-circuit protection sleeve 6 is provided with a short-circuit cavity 62, the short-circuit protection sleeve 6 is installed on one side of the hole insulator 5, the short-circuit cap 9 is installed in the short-circuit cavity 62, the hole cover plate 7 is installed on the other side of the short-circuit protection sleeve 6, the short-circuit cap 9 is provided with a spring cavity, one end of the spring 8 is inserted into the spring cavity of the short-circuit cap 9, and the other end is sleeved on the pressing cylindrical platform 71 of the hole cover plate 7.

[0016] The number of top rod grooves 23 and the number of short-circuit post holes 53 are the same, and their positions correspond one-to-one; the number of pin grooves 22 and the number of insertion hole grooves 51 are the same, and their positions correspond one-to-one. The number of short-circuit cavities 62 and the number of short-circuit post holes 53 are the same, and their positions correspond one-to-one. The insertion holes 4 and the insertion pins 3 in the pin insulator 2 are matched one-to-one.

[0017] The depth of the socket contact flat 54 is lower than the depth of the socket slot 51, and the depth of the pin contact flat 24 is lower than the depth of the pin slot 22. This ensures that the soldering orientation of the contact and the cable is consistent, increases the creepage distance, improves the withstand voltage performance, and achieves the purpose of miniaturizing the connector design.

[0018] Working principle: When the plug assembly and socket assembly are plugged in, the pin 3 on the pin insulator 2 is inserted into the socket 4 on the hole insulator 5. At this time, the push rod 11 is inserted into the short-circuit post hole 53 of the hole insulator 5 and abuts against the short-circuit post 10. The short-circuit post 10 slides along the short-circuit post hole 53 under the push of the push rod 11, thereby pushing the short-circuit cap 9 in the short-circuit cavity 62 to separate from the two adjacent sockets 4, releasing the short-circuit state of the connector. When the plug assembly and socket assembly are separated, the short-circuit cap 9 remains in contact with the two adjacent sockets 4 under the reset action of the spring 8, and the connector is in a short-circuit conducting state, enabling the product to achieve the function of internal short-circuit protection in circuit breaker applications. Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A connector with a high-density integrated self-short-circuit reinforced withstand voltage structure, comprising a plug assembly and a socket assembly, characterized in that: The plug assembly includes a pin cover plate (1), a pin insulator (2), a pin (3), and a push rod (11); the socket assembly includes a socket (4), a socket insulator (5), a short-circuit protection sleeve (6), a socket cover plate (7), a spring (8), a short-circuit cap (9), and a short-circuit post (10). The pin cover plate (1) is connected to the pin insulator (2), the socket insulator (5) is connected to the socket cover plate (7), and the short-circuit protection sleeve (6) is installed between the socket insulator (5) and the socket cover plate (7). The needle insulator (2) is provided with a plurality of push rod grooves (23), the push rod (11) is installed in the push rod groove (23), and the push rod groove (23) is also provided with pin grooves (22) on both sides. The pin groove (22) is provided with a pin contact flat position (24), and the pin (3) is installed in the pin groove (22). One side of the hole insulator (5) is provided with a hole insulator positioning key (52), and the hole cover plate (7) is provided with a hole cover plate positioning key (72) corresponding to the hole insulator positioning key (52) to facilitate the hole cover plate (7) to mate with the hole insulator (5). One side of the pin insulator (2) is provided with a pin insulator positioning key (21) corresponding to the hole insulator positioning key (52) to facilitate the mating and insertion of the plug assembly and the socket assembly. The hole insulator (5) is provided with a plurality of short-circuit post holes (53). The shorting post (10) is installed in the shorting post hole (53). The shorting post hole (53) has a socket groove (51) on both sides. The socket groove (51) has a socket contact flat part (54). The socket (4) is installed in the socket groove (51). When the plug assembly and the socket assembly are mated and inserted, the socket (4) is mated and inserted with the pin (3) installed in the pin groove (22) of the pin insulator (2). The hole insulator (5) also has a groove (55) in the middle. The hole cover plate (7) is provided with a pressing cylinder (71), the short circuit protection sleeve (6) is provided with a short circuit cavity (62), the short circuit protection sleeve (6) is installed on one side of the hole insulator (5), the short circuit protection sleeve (6) is provided with a boss (61) in the middle that matches the groove (55), the short circuit cap (9) is installed in the short circuit cavity (62), the hole cover plate (7) is installed on the other side of the short circuit protection sleeve (6), one end of the spring (8) is connected to the short circuit cap (9), and the other end is sleeved on the pressing cylinder (71) of the hole cover plate (7).

2. The connector with a high-density integrated self-short-circuit reinforced withstand voltage structure according to claim 1, characterized in that: The short-circuit cap (9) has a spring cavity inside. One end of the spring (8) is inserted into the spring cavity of the short-circuit cap (9), and the other end is sleeved on the pressing cylinder (71) of the hole cover plate (7).

3. The connector with a high-density integrated self-short-circuit reinforced withstand voltage structure according to claim 1, characterized in that: The number of top rod grooves (23) and the number of short-circuit post holes (53) are the same, and their positions correspond one-to-one; the number of pin grooves (22) and the number of socket grooves (51) are the same, and their positions correspond one-to-one.

4. The connector with a high-density integrated self-short-circuit reinforced withstand voltage structure according to claim 1, characterized in that: The number of short-circuit cavities (62) and the number of short-circuit post holes (53) are the same, and their positions correspond one-to-one.

5. The connector with a high-density integrated self-short-circuit reinforced withstand voltage structure according to claim 1, characterized in that: The depth of the socket contact flat (54) is lower than the depth of the socket groove (51), and the depth of the pin contact flat (24) is lower than the depth of the pin groove (22).

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