Connector structure with high protection performance

Abstract

The utility model discloses a connector structure with high protection performance, which comprises a male head, a female head and two protection covers, and is characterized in that the male head comprises a first insertion core and a first shell, the first insertion core is provided with a first mounting hole in a penetrating manner, the first mounting hole is internally connected with a first contact pin, the first insertion core is provided with a slot, the first shell is sleeved on the first insertion core, and the first insertion core is provided with a second contact pin; the female head comprises a second insertion core and a second shell, a second mounting hole penetrates through the second insertion core, a first contact column is connected in the second mounting hole, the second insertion core is sleeved with the second shell, a limiting column extends in the protective cover, a through hole penetrates through the limiting column, and the first insertion core and the second insertion core are covered with the two protective covers respectively. The second inserting core is inserted into the inserting groove in a sliding mode, and the first contact pin makes contact with the first contact column. The utility model provides the connector structure with high protection performance, the internal structure of the electric connector is optimized, the creepage distance is increased, and the protection performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical connectors, and in particular to a connector structure with high protection performance. Background Technology

[0002] As a core component in high-current and high-voltage transmission scenarios, heavy-duty connectors directly affect the reliability of equipment operation due to their insulation performance and electrical safety. In existing technologies, male and female connectors generally adopt a screw-press-fit structure to achieve electrical connection between the contact pin and the cable: by tightening the screw, the cable conductor is pressed against the terminal at the end of the contact pin, forming a mechanical fixation and conductive path.

[0003] However, this type of crimp design has significant drawbacks. The connection between the contact pin and the cable is achieved by crimping with screws, which leads to excessive compression of the physical distance (creep distance) between each conductive component and the inner wall of the housing. Under high voltage conditions, insufficient creep distance between conductive components can easily cause air ionization and form local arcs. The high temperature generated by the arc discharge will directly burn the surface of the contact pin and the adjacent insulating material, causing carbonization and charring inside the connector, making the electrical connector easy to damage and posing a significant safety hazard. Utility Model Content

[0004] The purpose of this invention is to provide a connector structure with high protection performance, optimize the internal structure of the electrical connector, increase the creepage distance, and improve the protection performance.

[0005] The technical solution adopted by the connector structure with high protection performance disclosed in this utility model is:

[0006] The device includes a male connector, a female connector, and two protective caps. The male connector includes a first insert and a first housing. The first insert has multiple first mounting holes, and a first contact pin is fixedly connected to each of the first mounting holes. The first insert has a slot. The first housing is fitted over the outside of the first insert. The female connector includes a second insert and a second housing. The second insert has multiple second mounting holes, and a first contact post is fixedly connected to each of the second mounting holes. The second housing is fitted over the outside of the second insert. The protective caps have multiple limiting posts extending from them, and each limiting post has a through hole. The two protective caps are respectively fitted over the first insert and the second insert. The limiting post of one protective cap touches the first contact pin, and the limiting post of the other protective cap touches the first contact post. The second insert slides into the slot, and the first contact pin contacts the first contact post.

[0007] As a preferred embodiment, the male connector further includes a plurality of first limiting screws, which pass through the protective cover and the first insert in sequence and are connected to the first contact pin. The female connector further includes a plurality of second limiting screws, which pass through the protective cover and the second insert in sequence and are connected to the first contact post.

[0008] As a preferred embodiment, the first insert has a first through groove, and a third mounting hole through the first insert is formed in the first through groove. A second contact pin is fixedly connected in the first through groove and passes through the third mounting hole. The second insert has a second through groove, and a fourth mounting hole through the second insert is formed in the second through groove. A second contact post is fixedly connected in the second through groove and passes through the fourth mounting hole.

[0009] As a preferred embodiment, the first insert has a first groove, and a third limiting screw is provided in the first groove. The third limiting screw passes through the first insert and is connected to the second contact pin. The second insert has a second groove, and a fourth limiting screw is provided in the second groove. The fourth limiting screw passes through the second insert and is connected to the second contact post.

[0010] As a preferred embodiment, the outer side of the first housing is provided with a first fixing screw, which passes through the first housing and is fixedly connected to the second contact pin. The outer side of the second housing is provided with a second fixing screw, which passes through the second housing and is fixedly connected to the second contact post.

[0011] As a preferred embodiment, a first sealing ring is fitted on the outer side of the first fixing screw, and the first sealing ring contacts the first housing. A second sealing ring is fitted on the outer side of the second fixing screw, and the second sealing ring contacts the second housing.

[0012] As a preferred embodiment, a third sealing ring is fitted on the outer side of the first insert, and an annular step is formed on the inner wall of the second housing. The third sealing ring is located inside the annular step and touches the first housing and the second housing.

[0013] The beneficial effects of the connector structure with high protection performance disclosed in this utility model are:

[0014] Multiple cables pass through the through holes on the protective cover into the first mounting hole and the second mounting hole, and are electrically connected to the first contact pin and the first contact post, respectively.

[0015] One of the protective covers limits the first contact pin to the first mounting hole via a limiting post, and the other protective cover limits the second contact pin to the second mounting hole via a limiting post. This encapsulates the cable connection within the internal structure of the first and second ferrules, thereby increasing the creepage distance and eliminating the potential for arc discharge caused by short creepage distance inside the male and female connectors. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of a connector structure with high protection performance according to this utility model.

[0017] Figure 2 This is a cross-sectional view of the male connector of a connector structure with high protective performance according to this utility model.

[0018] Figure 3 This is a schematic diagram of the installation of the first insert and protective cover of a connector structure with high protection performance according to this utility model.

[0019] Figure 4 This is a schematic diagram showing the installation of the first and second contact pins of a connector structure with high protective performance according to this utility model.

[0020] Figure 5 This is a cross-sectional view of the first insert and protective cover of a connector structure with high protection performance according to this utility model.

[0021] Figure 6 This is a cross-sectional view of the female connector of a connector structure with high protection performance according to this utility model.

[0022] Figure 7 This is a schematic diagram of the installation of the second ferrule and protective cover of a connector structure with high protection performance according to this utility model.

[0023] Figure 8 This is a schematic diagram of the installation of the first and second contact posts of a connector structure with high protection performance according to this utility model.

[0024] Figure 9 This is a cross-sectional view of the second ferrule and protective cover of a connector structure with high protection performance according to this utility model.

[0025] Figure 10 This is a cross-sectional view of a connector structure with high protective performance according to this utility model. Detailed Implementation

[0026] The present invention will be further described and illustrated below with reference to specific embodiments and the accompanying drawings:

[0027] Please refer to Figures 1-6 .

[0028] The present invention discloses a connector structure with high protection performance, including a male head 1, a female head 4 and two protective covers 7.

[0029] The male connector 1 includes a first insert 2, with a slot 211 at the bottom of the first insert 2. The first insert 2 has multiple first mounting holes that are connected to the bottom of the slot 211. In this embodiment, it is preferred that there are four first mounting holes that are parallel to each other. The cross-section of the first mounting hole is a tapered structure. A first contact pin 22 is fixedly connected inside the first mounting hole. A first mounting part 221 extends from the first contact pin 22. The first mounting part 221 touches the tapered end of the first mounting hole. The first contact pin 22 passes through the first mounting hole and extends into the slot 211.

[0030] Furthermore, a first through groove 212 is provided on the first insert 2, and a third mounting hole is provided in the first through groove 212, which penetrates the first insert 2. The third mounting hole communicates with the bottom of the slot 211, and the diameter of the third mounting hole is smaller than the width of the first through groove 212. A second contact pin 23 is fixedly connected to the first through groove 212, and a third mounting part 231 extends from the second contact pin 23. The third mounting part 231 touches the connection between the first through groove 212 and the third mounting hole, and the second contact pin 23 extends into the slot 211 through the third mounting hole.

[0031] Please refer to Figure 1 and Figures 6-10 .

[0032] The female connector 4 includes a second insert 5, on which a plurality of second mounting holes are passed. In this embodiment, it is preferred that there are four second mounting holes, which correspond to four first mounting holes and are parallel to each other. The cross-section of the second mounting hole is a tapered structure. A first contact post 52 is fixedly connected inside the second mounting hole. A second mounting part 521 extends from the first contact post 52 and touches the tapered end of the second mounting hole.

[0033] Furthermore, a second through groove 511 is provided on the second insert 5, and a fourth mounting hole is provided in the second through groove 511, which penetrates the second insert 5. The fourth mounting hole communicates with the bottom of the slot 211, and the diameter of the fourth mounting hole is smaller than the width of the second through groove 511. A second contact post 53 is fixedly connected to the second through groove 511, and a fourth mounting part 531 extends from the second contact post 53. The fourth mounting part 531 touches the connection between the second through groove 511 and the fourth mounting hole, and the second contact post 53 passes into the fourth mounting hole.

[0034] Furthermore, holes are provided at one end of the first contact post 52 and one end of the second contact post 53. The holes of the first contact post 52 are far away from the second mounting part 521, and the holes of the second contact post 53 are far away from the fourth mounting part 531. Four gaps are provided at one end of the first contact post 52 and one end of the second contact post 53. The four gaps are arranged at intervals around the holes, and the gaps divide the first contact post 52 into four grippers.

[0035] Please refer to Figures 3-5 and Figures 7-9 .

[0036] Multiple limiting posts 71 extend inside the protective cover 7. In this embodiment, five limiting posts 71 are preferred. Through holes are provided on the limiting posts 71. Slots 72 are provided on both sides of the protective cover 7.

[0037] Furthermore, first buckles 24 extend from both sides of the first insert 2, and second buckles 54 extend from both sides of the second insert 5. Two protective covers 7 are respectively placed on the top of the first insert 2 and the bottom of the second insert 5. The first buckles 24 are locked into the slot 72 of one of the protective covers 7, and the second buckles 54 are locked into the slot 72 of the other protective cover 7, thereby firmly fixing the two protective covers 7 onto the first insert 2 and the second insert 5 respectively.

[0038] Furthermore, the five limiting posts 71 of one of the protective covers 7 respectively abut against the first mounting part 221 of the four first contact pins 22 and the third mounting part 231 of the second contact pin 23, and the five limiting posts 71 of the other protective cover 7 respectively abut against the second mounting part 521 of the four first contact pins 52 and the fourth mounting part 531 of the second contact pin 53.

[0039] The male connector 1 also includes multiple first limiting screws 25. In this embodiment, four first limiting screws 25 are preferred. The four first limiting screws 25 are respectively close to the four directions of the first insert 2, so that the four first limiting screws 25 are far apart from each other, increasing the creepage distance. The first limiting screws 25 pass through the protective cover 7 and the first insert 2 in sequence and are connected to the first contact pin 22. The first mounting part 221 is provided with a first mating hole, which is connected to the through hole. After the cable passes through the through hole and is placed in the first mating hole for electrical connection, the first limiting screw 25 is rotated to make it contact the cable in the first mating hole. At the same time, the cable is fixed in the first mating hole, and the first limiting screw 25 is retracted into the first insert 2, further increasing the creepage distance between the first limiting screw 25 and the first housing 3.

[0040] The female connector 4 also includes multiple second limiting screws 55. In this embodiment, four second limiting screws 55 are preferred. The four second limiting screws 55 are respectively close to the four directions of the second insert 5, so that the four second limiting screws 55 are far apart from each other, increasing the creepage distance. The second limiting screws 55 pass through the protective cover 7 and the second insert 5 in sequence and are connected to the second contact pin 23. The second mounting part 521 is provided with a second mating hole, which is connected to the through hole. After the cable passes through the through hole and is placed in the second mating hole for electrical connection, the second limiting screws 55 are rotated to make them touch the cable in the second mating hole. At the same time, the cable is fixed in the second mating hole, and the second limiting screws 55 are retracted into the second insert 5, further increasing the creepage distance between the second limiting screws 55 and the second housing 6.

[0041] The first insert 2 has a first groove 26, and a third limiting screw is provided in the first groove 26. The third limiting screw passes through the first insert 2 and is connected to the second contact pin 23. The third mounting part 231 has a third mating hole, which is connected to the through hole. After the ground wire of the cable passes through the through hole and is placed in the third mating hole for electrical connection, the third limiting screw is rotated to make it contact the cable in the third mating hole. At the same time, the cable is fixed in the third mating hole, and the third limiting screw is retracted into the first groove 26, increasing the creepage distance between the third limiting screw and the first housing 3.

[0042] The second insert 5 has a second groove 56, and a fourth limiting screw is provided in the second groove 56. The fourth limiting screw passes through the second insert 5 and is connected to the second contact post 53. The fourth mounting part 531 has a fourth mating hole, which is connected to the through hole. After the ground wire of the cable passes through the through hole and is placed in the fourth mating hole for electrical connection, the fourth limiting screw is rotated to make it contact the cable in the fourth mating hole, thus fixing the cable in the fourth mating hole. At the same time, the fourth limiting screw is retracted into the second groove 56, increasing the creepage distance between the fourth limiting screw and the second housing 6.

[0043] An anti-fooling block 213 extends from the inner wall of the slot 211 and is parallel to the first contact pin 22; an anti-fooling groove 512 is provided on the outer side of the second insert 5, the anti-fooling groove 512 is close to the top of the second insert 5 and is parallel to the first contact post 52.

[0044] Please refer to Figure 1 , Figure 2 and Figure 7 .

[0045] The male connector 1 also includes a first housing 3, which is sleeved on the outside of the first plug 2. A first fixing screw 31 is provided on the outside of the first housing 3. The first fixing screw 31 passes through the first housing 3 and is fixedly connected to the second contact pin 23, thereby fixing the first plug 2 inside the first housing 3. The cable passes through the first housing 3 and is electrically connected to the first contact pin 22 and the second contact pin 23 on the first plug 2.

[0046] The female connector 4 also includes a second housing 6, which is sleeved on the outside of the second ferrule 5. A second fixing screw 61 is provided on the outside of the second housing 6. The second fixing screw 61 passes through the second housing 6 and is fixedly connected to the second contact post 53, thereby fixing the second ferrule 5 inside the second housing 6. The cable passes through the second housing 6 and is electrically connected to the first contact post 52 and the second contact post 53 on the second ferrule 5.

[0047] A first sealing ring 311 is sleeved on the outside of the first fixing screw 31. The first sealing ring 311 contacts the first fixing screw 31 and the first housing 3. The first sealing ring 311 is used to seal the gap between the first fixing screw 31 and the first housing 3 to prevent external moisture from entering the first housing 3 through the gap between the first fixing screw 31 and the first housing 3.

[0048] A second sealing ring 611 is sleeved on the outside of the second fixing screw 61. The second sealing ring 611 contacts the second fixing screw 61 and the second housing 6. The second sealing ring 611 is used to seal the gap between the second fixing screw 61 and the second housing 6 to prevent external moisture from entering the second housing 6 through the gap between the second fixing screw 61 and the second housing 6.

[0049] A third sealing ring 27 is fitted on the outer side of the first insert 2, and the third sealing ring 27 touches the edge of the first housing 3. An annular step is provided on the inner wall of the second housing 6.

[0050] The outer side of the first housing 3 is provided with a lever 32, the two ends of which are rotatably connected to the two sides of the first housing 3 respectively, and two symmetrical limiting grooves are provided on the lever 32; both sides of the second housing 6 extend limiting blocks 62.

[0051] Please refer to Figures 1-10 .

[0052] During docking:

[0053] The top of the second ferrule 5 slides into the slot 211, and the anti-fooling block 213 slides into the anti-fooling groove 512, making it easy for the user to connect the male connector 1 and the female connector 4; the first housing 3 slides into the annular step of the second housing 6, and pushes the third sealing ring 27 into the annular step, so that the third sealing ring 27 touches the first housing 3 and the second housing 6. The third sealing ring 27 is used to seal the gap between the first housing 3 and the second housing 6, so as to prevent external moisture from entering the connection between the male connector 1 and the female connector 4 from the gap between the first housing 3 and the second housing 6, which would affect the transmission of current between the male connector 1 and the female connector 4;

[0054] The first contact pin 22 slides into the hole of the first contact post 52, and the four claws of the first contact post 52 contact the outside of the first contact pin 22. The four claws can increase the clamping force of the hole of the first contact post 52 in holding the first contact pin 22. The second contact pin 23 slides into the hole of the second contact post 53, and the four claws of the second contact post 53 contact the outside of the second contact pin 23. The four claws can increase the clamping force of the hole of the second contact post 53 in holding the second contact pin 23.

[0055] Rotate the lever 32 on the first housing 3 to bring the limiting groove close to the limiting block 62, so that the limiting block 62 can be inserted into the limiting groove, thereby firmly fixing the male head 1 to the female head 4.

[0056] This utility model provides a connector structure with high protection performance, in which multiple cables pass through the through holes on the protective cover into the first mounting hole and the second mounting hole, and are electrically connected to the first contact pin and the first contact post respectively.

[0057] One of the protective covers limits the first contact pin to the first mounting hole via a limiting post, and the other protective cover limits the second contact pin to the second mounting hole via a limiting post. This encapsulates the cable connection within the internal structure of the first and second ferrules, thereby increasing the creepage distance and eliminating the potential for arc discharge caused by short creepage distance inside the male and female connectors.

[0058] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A connector structure with high protection performance, characterized in that, include: The male connector includes a first insert and a first housing. The first insert has multiple first mounting holes, and a first contact pin is fixedly connected in the first mounting holes. The first insert has a slot, and the first housing is sleeved on the outside of the first insert. The female connector includes a second insert and a second housing. The second insert has multiple second mounting holes, and a first contact post is fixedly connected in the second mounting holes. The second housing is sleeved on the outside of the second insert. Two protective covers, each with multiple limiting posts extending inside. Each limiting post has a through hole. The two protective covers are respectively placed on the first insert and the second insert. The limiting post of one protective cover touches the first contact pin, and the limiting post of the other protective cover touches the first contact post. The second insert slides into the slot, and the first contact pin contacts the first contact post.

2. The connector structure with high protection performance as described in claim 1, characterized in that, The male connector also includes multiple first limiting screws, which pass through the protective cover and the first insert in sequence and are connected to the first contact pin. The female connector also includes multiple second limiting screws, which pass through the protective cover and the second insert in sequence and are connected to the first contact post.

3. The connector structure with high protection performance as described in claim 2, characterized in that, The first insert has a first through groove, and a third mounting hole that penetrates the first insert is formed in the first through groove. A second contact pin is fixedly connected in the first through groove and passes through the third mounting hole. The second insert has a second through groove, and a fourth mounting hole that penetrates the second insert is formed in the second through groove. A second contact post is fixedly connected in the second through groove and passes through the fourth mounting hole.

4. The connector structure with high protection performance as described in claim 3, characterized in that, The first insert has a first groove, and a third limiting screw is provided in the first groove. The third limiting screw passes through the first insert and is connected to the second contact pin. The second insert has a second groove, and a fourth limiting screw is provided in the second groove. The fourth limiting screw passes through the second insert and is connected to the second contact post.

5. A connector structure with high protection performance as described in claim 4, characterized in that, The outer side of the first housing is provided with a first fixing screw, which passes through the first housing and is fixedly connected to the second contact pin. The outer side of the second housing is provided with a second fixing screw, which passes through the second housing and is fixedly connected to the second contact post.

6. A connector structure with high protection performance as described in claim 5, characterized in that, A first sealing ring is fitted on the outer side of the first fixing screw, and the first sealing ring touches the first housing. A second sealing ring is fitted on the outer side of the second fixing screw, and the second sealing ring touches the second housing.

7. A connector structure with high protection performance as described in claim 6, characterized in that, A third sealing ring is fitted on the outer side of the first insert, and an annular step is formed on the inner wall of the second housing. The third sealing ring is located inside the annular step and touches the first housing and the second housing.

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