A new type of low current high voltage line-to-line connector

Abstract

The present invention proposes a new type of low-current high-voltage line-to-line connector, a male head and a female socket are matched, a plurality of independent male head slots are opened in the plastic body of the male head, and the male terminal is arranged in the male head slot; the plastic body of the female socket includes a female plastic body and a plurality of female plastic units extending at one end of the female plastic body; when the male head and the female socket are matched with each other, the female plastic unit is arranged in the male head slot. The present invention arranges the male terminal in a plurality of independent male head slots respectively, so that the corresponding plurality of female plastic units can be matched therein respectively, thereby increasing the creepage distance of the contact area between the male head and the female socket, thereby increasing the rated working voltage of the product, and preventing users from accidentally touching the product, thereby increasing the safety of the product.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a novel low-current and high-voltage line-to-line connector. Background Art

[0002] With the rapid development and popularization of the automobile industry in China, people have higher and higher requirements for the functions that automobiles can achieve. Existing low-voltage connector products are increasingly unable to meet the needs of automobile connectors, and correspondingly, low-current and high-voltage connectors are receiving more and more attention and attention. Low-current and high-voltage connectors can be used in more occasions, and this connector has a compact structure. It can transmit low current to meet the requirements of automotive components and meet the transmission safety of connector products. It can also be used in high-voltage circuits. This will become the future development trend of road automobile connector products.

[0003] In order to meet the high voltage demand, the existing high-voltage connector products are limited by the connector structure. Most of them are large in size and have a single mating interface, or use a low-voltage connector with missing PINs to meet the high voltage demand. However, a large number of PIN holes are required, while the number of terminals actually used to transmit signals is small, making the selected connector longer and also occupying a large amount of space. This makes customers' choice of connectors have space limitations and is increasingly unable to meet the market's growing functional needs. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a novel low-current high-voltage line-to-line connector.

[0005] The main contents of the present invention include:

[0006] A novel low-current high-voltage line-to-line connector includes a male head and a female socket that are matched; the male head includes a male head plastic body and a plurality of male head terminals; the female socket includes a female socket plastic body and a plurality of female socket terminals; the male head plastic body is provided with a plurality of male head slots, and a single male head terminal is arranged in one of the male head slots; the female socket plastic body has a plurality of female socket receiving grooves; a single female socket terminal is arranged in one of the female socket receiving grooves;

[0007] Among them, the female socket plastic body includes a female plastic body and a plurality of female plastic units extending at one end of the female plastic body; a single female socket receiving groove penetrates the female plastic body and the corresponding female plastic unit; the contact portion of the female socket terminal is configured in the female plastic unit; when the male head and the female socket are mated with each other, the female plastic unit is configured in the male head slot, and the pin portion of the male head terminal is electrically connected to the contact portion of the female socket terminal.

[0008] Preferably, the mother plastic body comprises a front end face and a rear end face that are oppositely arranged, a left side face and a right side face that are oppositely arranged, and an upper side face and a lower side face that are oppositely arranged; a plurality of the mother plastic units are formed on the front end face; a single mother plastic unit is provided with a first mother-child groove along the axial direction, and a plurality of second mother-child grooves are provided on the rear end face of the mother plastic body, and the first mother-child grooves are connected to the second mother-child grooves one by one to form a mother seat receiving groove;

[0009] The welding portion where the female socket terminal is connected to the cable and part of the cable are arranged in the second female-sub slot; the contact portion of the female socket terminal is arranged in the first female-sub slot.

[0010] Preferably, the female seat plastic body comprises an inner plastic component and an outer plastic component, the outer plastic component comprises an outer plastic shell with a rear end opening, and an outer shell unit is extended from the front end surface of the outer plastic shell; the inner plastic component comprises an inner component body and an inner component unit extended from the front end surface of the inner component body; the inner component body is arranged in the outer plastic shell, and the inner component unit is arranged in the outer shell unit;

[0011] The first mother-child groove is provided on the inner component unit, and the second mother-child groove is provided on the inner component body.

[0012] Preferably, at least one first locking elastic arm is provided on the lower side of the inner component body, and a first locking groove is correspondingly provided on the outer plastic shell; the first locking elastic arm includes a first locking protrusion, and the first locking protrusion slides in the first locking groove.

[0013] Preferably, a second locking spring arm is extended forward on the lower side of the inner component unit; a second locking protrusion is protruding from the inner wall of the outer body unit; when the inner plastic component and the outer plastic component are assembled in place, the second locking protrusion presses the protruding portion of the second locking spring arm into the locking opening of the contact portion of the female terminal.

[0014] Preferably, an unlocking spring is provided on the rear side of the upper side of the inner component body, and an unlocking protrusion and an unlocking pressing portion are convexly provided on the unlocking spring; a second locking groove is provided on the outer plastic shell; and the unlocking protrusion is arranged in the second locking groove.

[0015] Preferably, a female seat repair opening is opened on the front end surface of the inner component unit, and the female seat repair opening is communicated with the first female-child groove and is opposite to the second locking elastic arm.

[0016] Preferably, a plurality of first creepage grooves are provided on the rear end face of the mother plastic body, and the first creepage grooves are provided between two of the second mother-child grooves at intervals; and the first creepage grooves extend from the rear end face to the welding portion of the mother socket terminal;

[0017] And / or, a plurality of second creepage grooves are formed on the rear end surface of the male plastic body, and the second creepage grooves extend to the welding portion of the male terminal.

[0018] Preferably, the single male connector slot includes a first male connector slot and a second male connector slot from front to back; the outer diameter of the first male connector slot is larger than the outer diameter of the second male connector slot, and the pin portion of the male terminal is arranged in the first male connector slot, and the welding portion connecting the male terminal to the cable and part of the cable are arranged in the second male connector slot.

[0019] Preferably, a locking groove is provided on the upper side of the male plastic body, and the bottom of the locking groove is respectively connected with a single second male groove and is opposite to the welding portion of the male terminal;

[0020] A locking TPA is arranged in the locking groove, and the locking TPA includes a TPA body and a TPA clamping plate extending at both ends of the TPA body. At least two locking ribs are convexly provided on the left and right sides of the male plastic body; the inner surface of the TPA clamping plate is clamped with the locking ribs.

[0021] Preferably, at least one third creepage groove body is provided on the upper surface of the partition wall between two adjacent second male grooves, and the third creepage groove body extends from front to back;

[0022] A plurality of groups of first clamping pins are protrudingly provided on the lower surface of the TPA body, and the clamping pins are arranged in the third creepage groove body; a second clamping pin is provided between two adjacent groups of the first clamping pins, and the second clamping pin is arranged in a locking opening of the welding part of the male terminal.

[0023] Preferably, an anti-retraction step is provided on the lower side wall of the second male groove at one end close to the first male groove, and an anti-retraction arm is extended backward from one end of the welding portion of the male terminal close to the pin portion of the male terminal, and the anti-retraction arm rests on the anti-retraction step.

[0024] Preferably, a male repair opening is provided on the front end surface of the male plastic body, and the male repair opening is communicated with the second male groove and is opposite to the anti-bounce arm.

[0025] Preferably, it further comprises an interlocking retainer, wherein the interlocking retainer comprises an interlocking receiving bridge arranged on the upper surface of the male plastic body, an interlocking block convexly arranged on the upper surface of the female plastic body, and an interlocking plug-in;

[0026] A first interlocking protrusion is convexly provided on the front side of the inner wall of the interlocking receiving bridge, and an interlocking slot is provided on the rear end face of the interlocking block, and the interlocking slot penetrates to the upper surface of the interlocking block, and the interlocking plug-in slides along the interlocking slot; stop arms are symmetrically provided on the left and right walls of the interlocking slot; the interlocking plug-in includes a plug-in body and an interlocking elastic arm extending at the front end of the plug-in body, a second interlocking protrusion is convexly provided on the interlocking elastic arm and a first interlocking groove is provided; in an interlocking state, the stop arm abuts against the second interlocking protrusion, and the first interlocking protrusion is arranged in the first interlocking groove.

[0027] Preferably, a pressing spring sheet is extended backwards from the front side wall of the interlocking slot, and an interlocking slideway is formed between the pressing spring sheet and the left and right walls of the interlocking slot respectively; an interlocking blind groove and an interlocking slot are formed on the inner wall of the interlocking receiving bridge; the interlocking spring arm slides along the interlocking slideway and the interlocking blind groove; first stop blocks are convexly provided on both sides of the pressing spring sheet; a secondary locking block is convexly provided on the upper surface of the pressing spring sheet, and when in the secondary locking state, the first stop block is arranged in the first interlocking groove, and the secondary locking block is arranged in the interlocking slot;

[0028] And / or, an interlocking partition is horizontally arranged in the middle of the interlocking slot, a plug-in base is arranged on the lower side of the plug-in body, the plug-in base slides under the interlocking partition, and the interlocking elastic arm slides above the interlocking partition.

[0029] Preferably, the front end surface of the mother plastic body is extended forward to be provided with anti-foolproof ribs, and the anti-foolproof ribs are located above the mother plastic unit and / or on both sides of the front end surface of the mother plastic body;

[0030] The front end surface of the male plastic body is provided with a foolproof groove, and the foolproof groove is located above the male slot and / or on the left and right sides of the front surface of the male plastic body;

[0031] The foolproof ribs are connected to the mother plastic units located on both sides.

[0032] The present invention proposes a novel low-current high-voltage line-to-line connector, which has the following beneficial effects:

[0033] (1) By configuring the male terminals in a plurality of independent male sockets, the corresponding multiple female plastic units can be matched therein, thereby increasing the creepage distance of the contact area between the male and female sockets, thereby increasing the rated working voltage of the product, preventing users from accidentally touching the product, and increasing the safety of the product;

[0034] (2) The plastic body of the female socket adopts the method of matching the inner and outer sheaths with each other. Through the design of the corresponding structure, it can not only realize the anti-retraction function and the repair function of the female socket terminal, but also increase the creepage distance to further meet the needs of high voltage;

[0035] (3) On the male side, by opening a third creepage groove on the male plastic body corresponding to the welding part of the male terminal, the creepage distance can be increased and the working voltage of the product can be improved;

[0036] (4) By providing an interlocking retainer, reliable interlocking between the male head and the female seat is achieved, and the locking and unlocking operations are convenient;

[0037] (5) By setting the anti-mistake ribs and anti-mistake grooves, it is possible to avoid oblique insertion or forward and reverse insertion that may occur during the mating process, thereby reducing the damage to the terminals during the board insertion process. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0039] Figure 2 The figure is a schematic diagram of the overall structure of the mother seat;

[0040] Figure 3 The figure is a schematic diagram of the overall structure of the mother seat from the rear;

[0041] Figure 4 is a schematic cross-sectional view of the female seat;

[0042] Figure 5 is a schematic diagram of the structure of the outer plastic component;

[0043] Figure 6 is a schematic diagram of the structure of the inner plastic component;

[0044] Figure 7 This is a schematic diagram of the assembly process of the female terminal;

[0045] Figure 8 This is a schematic diagram of the female socket terminal in the first locking state;

[0046] Fig. 9 This is a schematic diagram of the female terminal in the secondary locking state;

[0047] Fig.10 This is a schematic diagram of the inner plastic component in a locked state;

[0048] Fig.11 This is a schematic diagram of the inner plastic component in the secondary locking state;

[0049] Fig.12 This is a schematic diagram of the overall structure of the male connector;

[0050] Fig.13 This is the front view of the male connector;

[0051] Fig.14 This is a cross-sectional view of the male connector;

[0052] Fig.15 It is the longitudinal section of the male connector;

[0053] Fig.16 This is a schematic diagram of the structure of the male connector after the locking TPA is removed;

[0054] Fig.17 for Fig.16 The enlarged view of point A in the middle;

[0055] Fig.18 for Fig.16 A front view of

[0056] Fig.19 for Fig.18 The enlarged view of point B in the middle;

[0057] Fig. 20 for Fig.18 Enlarged view of point C in the middle;

[0058] Fig.21 This is a cross-sectional view of the male connector and the female connector when mating with each other;

[0059] Fig. 22 It is a schematic diagram of the structure of locking TPA;

[0060] Fig.23 This is a schematic diagram of the male connector in the first locking state;

[0061] Fig.24 This is a schematic diagram of the male connector in the secondary locking state;

[0062] Fig.25 This is a schematic diagram of the next locking state of the male and female mating;

[0063] Fig.26 It is a schematic diagram of the structure of the interlocking plug-in;

[0064] Reference numerals:

[0065] 1-male connector; 10-male connector plastic body; 100-male connector slot; 100a-first male connector slot; 100b-second male connector slot; 101-second creepage current slot body; 102-third creepage current slot body; 103-anti-recoil step; 104-anti-recoil arm; 105-male connector repair opening; 106-locking slot; 11-male connector terminal; 11a-male connector pin portion; 11b-male connector welding portion; 1100-locking opening of male connector welding portion; 12-male connector cable;

[0066] 2- female seat; 20- female seat plastic body; 20-1- female plastic body; 20-2- female plastic unit; 200- female seat receiving groove; 200a- first female-child groove; 200b- second female-child groove; 201- outer plastic component; 201-1- outer plastic shell; 201-2- outer shell unit; 202- inner plastic component; 202-1- inner component body; 202-2- inner component unit; 203- first locking elastic arm; 204- first locking Protrusion; 205-first locking groove; 206-second locking elastic arm; 207-second locking protrusion; 208-unlocking spring; 209-unlocking convex block; 210-unlocking pressing part; 211-second locking groove; 212-repair opening of female socket; 213-first creepage groove body; 21-female socket terminal; 21a-contact part of female socket terminal; 21b-welding part of female socket terminal; 2100-locking opening of contact part of female socket terminal; 22-female socket cable;

[0067] 3-locking TPA; 30-TPA body; 31-TPA clamping plate; 32-locking rib; 33-first clamping foot; 34-second clamping foot;

[0068] 4-interlocking retainer; 40-interlocking plug-in; 400-plug-in body; 401-interlocking elastic arm; 402-second interlocking protrusion;

[0069] 403 - first interlocking groove; 404 - plug-in block base; 41 - interlocking receiving bridge; 410 - first interlocking protrusion; 42 - interlocking block;

[0070] 420-interlocking slot; 421-stop arm; 422-pressing spring; 423-interlocking slide; 424-first stop block; 425-secondary stop block; 426-slideway partition;

[0071] 51-anti-foolproof rib position; 52-anti-foolproof groove. DETAILED DESCRIPTION

[0072] The technical solution protected by the present invention is described in detail below with reference to the accompanying drawings.

[0073] The present invention proposes a novel low-current high-voltage line-to-line connector, which increases the creepage distance of certain areas through the structural design of the male head and the female socket, thereby improving the rated working voltage of the product and meeting the high voltage demand.

[0074] The following is a detailed description of the related structural design of the present invention to achieve high voltage. Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Fig.12 , Fig.14 , Fig.16 , Fig.17 , Fig.18 , Fig.19 , Fig. 20 , Fig.21 .

[0075] like Figure 1 As shown, a novel low-current high-voltage line-to-line connector proposed by the present invention comprises a mating male connector 1 and a female connector 2; wherein the male connector 1 comprises a male connector plastic body 10 and a plurality of male connector terminals 11; the female connector 2 comprises a female connector plastic body 20 and a plurality of female connector terminals 21; the male connector plastic body 10 is provided with a plurality of male connector slots 100, and a single male connector terminal 11 is arranged in one of the male connector slots 100. Different from the existing design, the male connector slots 100 of the present invention completely isolate adjacent male connector terminals. In the existing design, the male connector terminals are respectively arranged in corresponding plastic bodies through separately provided terminal mounting grooves, and the pin parts contacting the female connector terminals are not isolated by corresponding plastic bodies; as shown Fig.12 As shown, the male plastic body of the present invention is formed with a plurality of independent male sockets 100 , that is, there are partition walls between adjacent male sockets 100 .

[0076] Correspondingly, such as Figure 2 and Figure 3 As shown, the female seat plastic body 20 has a plurality of female seat receiving grooves 200 as in the existing design; so that a single female seat terminal 21 is configured in one of the female seat receiving grooves 200; but the female seat plastic body 20 of the present invention includes a female plastic body 20-1 and a plurality of female plastic units 20-2 extending at one end of the female plastic body 20-1; that is, a single female seat receiving groove 200 is formed through the female plastic body 20-1 and the corresponding female plastic unit 20-2; when the male head 1 and the female seat 2 are mated with each other, the single female plastic unit 20-2 is respectively configured in one of the male head slots 100, so that the pin portion 11a of the male terminal is electrically connected to the contact portion 21a of the female terminal.

[0077] Furthermore, if Figure 4 As shown, the female seat receiving groove 200 can be divided into a first female-child groove 200a and a second female-child groove 200b, the first female-child groove 200a is formed in the female plastic unit 20-2, and the second female-child groove 200b is formed in the female plastic body 20-1, and the contact portion 21a of the female seat terminal is arranged in the first female-child groove 200a, and the welding portion 21b of the female seat terminal connected to the cable and part of the cable 22 are arranged in the second female-child groove 200b; through such a design, the creepage distance at the contact portion of the female seat terminal is as follows: Figure 4 L1 refers to, at the same time, the creepage distance at the welding part of the female terminal is as follows Figure 4L2 refers to the fact that by increasing the creepage distances at these two locations, the operating voltage of the product can be improved.

[0078] Similarly, if Fig.14 As shown, the male socket 100 is also divided into a first male slot 100a and a second male slot 100b according to the assembly of different parts of the male terminal 11. The first male slot 100a is used to receive the female plastic unit 20-2, while the second male slot 100b is used for overall assembly. Therefore, the outer diameter of the first male slot 100a is larger than the second male slot 100b. Specifically, the pin portion 11a of the male terminal is arranged in the first male slot 100a, and the welding portion 11b connecting the male terminal and the cable and part of the cable 12 are arranged in the second male slot 100b. Through the design of the male connector, the creepage distance increased at the pin portion of the male terminal is as shown in FIG. Fig.14 The creepage distance added to the soldering part is as follows: Fig.14 As mentioned in L4, the small frame design of the male plug not only increases the creepage distance and improves the rated working voltage of the product, but also prevents the staff from touching when plugging and unplugging, thereby increasing the safety protection performance of the product.

[0079] like Fig.21 As shown in the figure, when the male connector and the female connector are mated, the creepage distance at the mating point between the two is indicated by L88 in the figure. Compared with the existing design, the creepage distance at the mating point is increased, and the rated working voltage of the product is improved.

[0080] In one embodiment, if Figure 16-20 As shown, the male connector 1 also adds an additional creepage distance at the assembly location of the terminal position assurance mechanism of the male terminal 11. Specifically, a locking groove 106 is provided on the upper side of the male connector plastic body. The locking groove 106 is used to assemble the locking TPA3 (i.e., the terminal position maintaining mechanism). The locking groove 106 extends from the upper surface of the male connector plastic body 10 toward each of the male connector slots 100. More specifically, the locking groove 106 is provided at a corresponding position of the second male sub-slot 100b and is connected to the second male sub-slot 100b, so that the welding portion 11b of the male terminal is exposed, especially the locking opening 1100 of the welding portion of the male terminal is exposed. When the locking TPA3 is assembled in place, the locking TPA is abutted against the locking opening 1100 of the welding portion of the male terminal, thereby achieving position retention of the male terminal 10. This structure will be described in detail later. What this section wants to describe is that a third creepage current slot 102 is added to the locking slot. Specifically, at least one third creepage current slot 102 is opened on the upper surface of the partition wall between two adjacent second male slots 100b. Fig.16As shown, two third creepage grooves 102 are provided on a partition wall, and the third creepage grooves 102 extend from front to back; wherein the creepage distance increased in the middle of the connection between the welding portion of the male terminal and the male cable 12 is as shown in FIG. Fig.17 The path indicated by L5; Fig.19 and Fig. 20 The creepage distance L6 increased in the front of the connection between the welding part of the male terminal and the male cable 12 and the creepage distance L7 increased in the rear of the connection between the two are given; that is, while achieving the locked TPA3 assembly, the creepage distance at this location can also be increased, and the rated working voltage of the product is also improved to a certain extent.

[0081] In other embodiments, Figure 3 As shown, the rear end face of the mother plastic body 20-1 is provided with a plurality of first creepage grooves 213, and the first creepage grooves 213 are spaced apart between two of the second mother-child grooves 200b; and the first creepage grooves 213 extend from the rear end face to the welding portion 21b of the mother terminal. Through such a design, the creepage distance at the connection between the welding portion of the mother terminal and the mother cable 22 is increased.

[0082] In addition, a plurality of second creepage grooves 101 are provided on the rear end surface of the male plastic body 10. The second creepage grooves 101 extend to the welding portion of the male terminal and are located between two adjacent male sockets 100. Fig.16 As shown, two second creepage current slots 101 are provided between two adjacent male header sockets 100 .

[0083] In addition to being applicable to high voltages, the wire-to-wire connector of the present invention also provides a reliable connection, which is specifically achieved by stably assembling the female socket terminal 21 and the male terminal 11 separately and reliably interlocking the male and female sockets.

[0084] Specifically, please refer to Figure Figure 1 , Figure 5 and Figure 6The female seat plastic body 10 includes an inner plastic component 202 and an outer plastic component 201. The inner plastic component 202 is assembled in the outer plastic component 201 to form the female seat plastic body 20. The inner plastic component 202 and the outer plastic component 201 have corresponding structures with the female seat plastic body 10, that is, the outer plastic component 201 includes an outer plastic shell 201-1 with a rear end opening, and the front end surface of the outer plastic shell 201-1 is extended with an outer shell unit 201-2; similarly, the inner plastic component 202 includes an inner component body 202-1 and an extended The inner component unit 202-2 is at the front end surface of the inner component body 202-1; when the inner plastic component 202 is assembled into the outer plastic component 201, the inner component body 202-1 is arranged in the outer plastic shell 201-1, and the inner component unit 202-2 is arranged in the outer shell unit 201-2; accordingly, the first mother-child groove 21a is opened on the inner component unit 202-2, and the second mother-child groove 21b is opened on the inner component body 202-1; the first creepage groove body 213 is also opened on the inner component body 202-1.

[0085] The inner plastic component 202 and the outer plastic component 201 can be reliably assembled. Specifically, Figure 5 and Figure 6 As shown, at least one first locking elastic arm 203 is provided on the lower side of the inner component body 202-1, and a first locking groove 205 is correspondingly provided on the outer plastic shell 201-1; the first locking elastic arm 203 includes a first locking protrusion 204. When the inner plastic component 202 is inserted from the rear end face of the outer plastic component 201, the first locking elastic arm 203 is first squeezed and deformed by the frame opening of the outer plastic shell 201-1, and as the inner plastic component 202 is pushed, the first locking protrusion 204 enters the first locking groove 205, and the first locking elastic arm 203 recovers its deformation, as shown in FIG. Fig.10 As shown, in this embodiment, the first locking groove 205 has a certain length, so that after the first locking protrusion 204 enters the first locking groove 205, it can continue to slide a certain distance in the first locking groove 205, thereby realizing a primary locking state between the inner plastic component 202 and the outer plastic component 201.

[0086] Furthermore, if Fig.11As shown, an unlocking spring piece 208 is provided on the rear side of the upper side surface of the inner component body 202-1, and an unlocking protrusion 209 and an unlocking pressing portion 210 are convexly provided on the unlocking spring piece 208; correspondingly, a second locking groove 211 is opened on the outer plastic shell 201-1; when the inner plastic component 202 is continued to be pushed, the first locking protrusion 204 slides into place in the first locking groove 205, and at this time, the unlocking protrusion 209 is configured in the second locking groove 211, so as to realize the stable assembly of the inner plastic component 202 and the outer plastic component 201, that is, to realize the secondary locking state of the two.

[0087] Furthermore, through the design of the inner plastic component 202 and the outer plastic component 201, the female socket terminal 21 is also stably assembled in the female socket receiving groove 200. Specifically, Figure 7 As shown, the lower side of the inner component unit 202-2 is provided with a second locking elastic arm 206 extending forward; correspondingly, the inner wall of the outer body unit 201-2 is provided with a second locking protrusion 207; when the inner plastic component 202 and the outer plastic component 201 are locked once, as shown in FIG. Figure 6 As shown, the female socket terminal 21 is inserted from the rear end of the inner plastic component 202, and the front end of the female socket terminal 21 first squeezes the second locking elastic arm 206 to deform it outward. As the female socket terminal 21 is inserted, the female socket terminal 21 overcomes the second locking elastic arm 206 and continues to move forward. When the locking opening 2100 of the contact portion of the female socket terminal is opposite to the protrusion of the second locking elastic arm 206, as shown in FIG. Figure 8 As shown, the extrusion force on the second locking elastic arm 206 disappears and the second locking elastic arm 206 recovers its shape, and then the inner plastic component 202 equipped with the female socket terminal is assembled into place. Fig. 9 As shown, the second locking protrusion 207 presses the protruding portion of the second locking spring arm into the locking opening 2100 of the contact portion of the female terminal, so that the female terminal 21 can remain stably assembled during the plugging and unplugging process with the male connector.

[0088] Based on such a design, a female seat repair opening 212 is also provided on the front end surface of the inner component unit 202-2. Figure 2 and Fig. 9 As shown, the female socket repair port 212 is connected to the first female-child groove 200a and is opposite to the second locking spring arm 206. When a female socket terminal needs to be replaced, the unlocking spring arm 208 is first pressed to disengage the unlocking protrusion 209 from the second locking groove 211, so that the inner plastic component 202 retreats to a locked state, as shown in FIG. Figure 8In the state shown, with the help of a tool, the female socket repair opening 212 is inserted into the second locking elastic arm 206 to cause it to deform outward to eliminate the limitation on the female socket terminal 21. At this time, the female socket terminal can be taken out.

[0089] See also Fig.15 , Fig.16 as well as Figure 22-24 , the male terminal is also designed with a corresponding structure for stabilizing the assembly of the male terminal and facilitating the maintenance of the male terminal. Specifically, a locking TPA3 is arranged in the locking groove 106, and the locking TPA3 includes a TPA body 30 and a TPA clamping plate 31 extending at both ends of the TPA body 30. At least two locking ribs 32 are convexly arranged on the left and right sides of the male plastic body 10; the inner surface of the TPA clamping plate 31 is clamped with the locking ribs 32; similarly, two locking ribs are also arranged on the inner surface of the TPA clamping plate 31. Furthermore, a plurality of groups of first clamping pins 33 are convexly arranged on the lower surface of the TPA body 30, and the first clamping pins 33 are arranged in the third creepage groove 102; a second clamping pin 34 is arranged between two adjacent groups of the first clamping pins 33, and the second clamping pin 34 is arranged in the locking opening 1100 of the welding part of the male terminal.

[0090] When the locking ribs located at the top are engaged with each other, the male terminal is in a primary locking state. Fig.23 As shown, when the locking TPA is continuously pressed, the locking rib at the bottom is engaged, so that the male terminal is in a secondary locking state. At this time, the second clamping foot 34 is disposed in the locking opening 1100 of the welding portion of the male terminal, as shown in FIG. Fig.24 shown.

[0091] In one embodiment, an anti-retraction step 103 is provided on the lower side wall of the second male groove 200b near one end of the first male groove 200a, and an anti-retraction arm 104 is extended backward from one end of the welding portion 21b of the male terminal near the pin portion 21a of the male terminal. In the secondary locking state of the male terminal, the anti-retraction arm 104 abuts against the anti-retraction step 103.

[0092] Similarly, the front end surface of the male plastic body 10 is provided with a male repair opening 105. Fig.23 As shown, the male repair opening 105 is connected to the second male slot 200b and is opposite to the anti-bounce arm 103. When the male terminal needs to be repaired, the locking TPA is first unlocked to a primary locking state, and then a tool is used to apply a force to the anti-bounce arm 103 through the male repair opening 105 to deform it and pass over the obstruction of the anti-bounce step 102, and then the male terminal can be taken out.

[0093] In one embodiment, please combine Figure 2 , Fig.12 , Fig.13 as well as Fig.25 and Fig.26 The present invention can also realize reliable interlocking between the male head and the female seat. Specifically, the present invention also includes an interlocking retainer 4, which includes an interlocking receiving bridge 41 arranged on the upper surface of the male head plastic body 10, an interlocking block 42 protruding from the upper surface of the female plastic body 20, and an interlocking plug-in 43.

[0094] Among them, a first interlocking protrusion 410 is convexly provided on the front side of the inner wall of the interlocking receiving bridge 41, and an interlocking slot 420 is opened on the rear end face of the interlocking block 42, and the interlocking slot 420 penetrates to the upper surface of the interlocking block 42, and the interlocking plug-in 40 includes a plug-in body 400, an interlocking elastic arm 401 extending at the front end of the plug-in body 400 and a plug-in base 404, a second interlocking protrusion 402 is convexly provided on the interlocking elastic arm 401, and a first interlocking groove 403 is also opened at the front end of the second interlocking protrusion 402.

[0095] A slide partition 426 is also provided in the interlocking slot 420, and the slide 426 divides the interlocking slot 420 into two parts, an upper part and an lower part. When the interlocking plug-in 43 slides along the interlocking slot 420, the plug-in base 404 slides under the interlocking partition 426, and the interlocking elastic arm 401 slides over the interlocking partition 426, thereby ensuring the sliding stability of the interlocking plug-in 43; at the same time, Figure 2 As shown, stop arms 421 are symmetrically arranged on the left and right walls of the interlocking slot 420 .

[0096] Furthermore, a pressing spring piece 422 is extended backward on the front side wall of the interlocking slot 420, and an interlocking blind groove and an interlocking position groove are provided on the inner wall of the interlocking receiving bridge 41; interlocking slides 423 are respectively formed between the pressing spring piece 422 and the left and right walls of the interlocking slot 420; the interlocking spring arm 401 slides along the interlocking slides 423 and the interlocking blind groove; a first stop block 424 is protruding on both sides of the pressing spring piece 422; and a secondary locking block 425 is protruding on the upper surface of the pressing spring piece 423.

[0097] When the male head and the female socket are matched, the interlocking plug-in 40 is inserted into the opening of the interlocking slot 420. As it is inserted, the stop arm 421 can abut against the second interlocking protrusion 402 to prevent the interlocking plug-in 40 from withdrawing from the interlocking slot 420. At the same time, the first interlocking protrusion 410 is configured in the first interlocking groove 403 to achieve a once-locked state. At this time, the first stop block 424 abuts against the front end face of the interlocking elastic arm 401. As the interlocking plug-in 40 continues to enter the interlocking receiving bridge 41, the frame opening of the interlocking receiving bridge 41 squeezes the interlocking elastic arm 401 through the second interlocking protrusion 402 to cause it to deform, so that the interlocking elastic arm 401 overcomes the obstruction of the first stop block 424 and continues to advance toward the interlocking receiving bridge 41 until the first stop block 424 is configured in the first interlocking groove 403, and the secondary locking block 425 is configured in the interlocking position slot to achieve a secondary locking state.

[0098] Also, see Figure 2 , Fig.12 and Fig.13 The front end surface of the female plastic body 20 is extended forward to be provided with an anti-foolproof rib 51, and the anti-foolproof rib 51 is located above the female plastic unit and / or on both sides of the front end surface of the female plastic body; the front end surface of the male plastic body 10 is correspondingly provided with an anti-foolproof groove 52, and the anti-foolproof groove 52 is located above the male slot and / or on the left and right sides of the front surface of the male plastic body 10; further, the anti-foolproof rib is connected to the female plastic unit located on both sides to form a whole, which increases the strength while realizing the anti-foolproof function.

[0099] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A novel low-current high-voltage line-to-line connector, comprising a matching male head and a female seat; the male head comprises a male head plastic body and a plurality of male head terminals; the female seat comprises a female seat plastic body and a plurality of female seat terminals; characterized in that: The male plastic body is provided with a plurality of male slots, and a single male terminal is arranged in one of the male slots; the female plastic body is provided with a plurality of female receiving slots; a single female terminal is arranged in one of the female receiving slots; Among them, the female socket plastic body includes a female plastic body and a plurality of female plastic units extending at one end of the female plastic body; a single female socket receiving groove penetrates the female plastic body and the corresponding female plastic unit; the contact portion of the female socket terminal is configured in the female plastic unit; when the male head and the female socket are mated with each other, the female plastic unit is configured in the male head slot, and the pin portion of the male head terminal is electrically connected to the contact portion of the female socket terminal.

2. A novel low current high voltage connector according to claim 1, characterized in that: The mother plastic body comprises a front end face and a rear end face that are oppositely arranged, a left side face and a right side face that are oppositely arranged, and an upper side face and a lower side face that are oppositely arranged; a plurality of the mother plastic units are formed on the front end face; a single mother plastic unit is provided with a first mother-child groove along the axial direction, and a plurality of second mother-child grooves are provided on the rear end face of the mother plastic body, and the first mother-child grooves are connected to the second mother-child grooves one by one to form a mother seat receiving groove; The welding portion where the female socket terminal is connected to the cable and part of the cable are arranged in the second female-sub slot; the contact portion of the female socket terminal is arranged in the first female-sub slot.

3. A novel low current high voltage connector according to claim 2, characterized in that: The female seat plastic body includes an inner plastic component and an outer plastic component, the outer plastic component includes an outer plastic shell with a rear end opening, and an outer shell unit is extended from the front end surface of the outer plastic shell; the inner plastic component includes an inner component body and an inner component unit extended from the front end surface of the inner component body; the inner component body is arranged in the outer plastic shell, and the inner component unit is arranged in the outer shell unit; The first mother-child groove is provided on the inner component unit, and the second mother-child groove is provided on the inner component body.

4. A novel low current high voltage connector according to claim 3, characterized in that: At least one first locking elastic arm is arranged on the lower side of the inner component body, and a first locking groove is correspondingly opened on the outer plastic shell; the first locking elastic arm includes a first locking protrusion, and the first locking protrusion slides in the first locking groove.

5. A novel low current high voltage connector according to claim 4, characterized in that: A second locking spring arm is extended forward from the lower side of the inner component unit; a second locking protrusion is protruded from the inner wall of the outer body unit; when the inner plastic component and the outer plastic component are assembled in place, the second locking protrusion presses the protruding portion of the second locking spring arm into the locking opening of the contact portion of the female terminal.

6. A novel low-current high-voltage connector according to claim 5, characterized in that: An unlocking spring is arranged at the rear side of the upper side of the inner component body, and an unlocking protrusion and an unlocking pressing portion are convexly arranged on the unlocking spring; a second locking groove is opened on the outer plastic shell; and the unlocking protrusion is arranged in the second locking groove.

7. A novel low-current high-voltage connector according to claim 5, characterized in that: A female seat repair opening is formed on the front end surface of the inner component unit, and the female seat repair opening is communicated with the first female-child groove and is opposite to the second locking elastic arm.

8. A novel low-current high-voltage connector according to claim 2, characterized in that: A plurality of first creepage grooves are provided on the rear end surface of the mother plastic body, and the first creepage grooves are provided between two of the second mother-child grooves at intervals; and the first creepage grooves extend from the rear end surface to the welding portion of the mother socket terminal; And / or, a plurality of second creepage grooves are formed on the rear end surface of the male plastic body, and the second creepage grooves extend to the welding portion of the male terminal.

9. A novel low-current high-voltage connector according to any one of claims 1 to 8, characterized in that: The single male connector slot includes a first male connector slot and a second male connector slot from front to back; the outer diameter of the first male connector slot is larger than the outer diameter of the second male connector slot, and the pin portion of the male terminal is arranged in the first male connector slot, and the welding portion connecting the male terminal and the cable and part of the cable are arranged in the second male connector slot.

10. A novel low-current high-voltage connector according to claim 9, characterized in that: The upper side of the male plastic body is provided with a locking groove, the bottom of which is respectively connected with a single second male groove and is opposite to the welding portion of the male terminal; A locking TPA is arranged in the locking groove, and the locking TPA includes a TPA body and a TPA clamping plate extending at both ends of the TPA body. At least two locking ribs are convexly provided on the left and right sides of the male plastic body; the inner surface of the TPA clamping plate is clamped with the locking ribs.

11. A novel low current high voltage connector according to claim 10, characterized in that: At least one third creepage groove body is provided on the upper surface of the partition wall between two adjacent second male grooves, and the third creepage groove body extends from front to back; A plurality of groups of first clamping pins are protrudingly provided on the lower surface of the TPA body, and the first clamping pins are arranged in the third creepage groove body; a second clamping pin is provided between two adjacent groups of the first clamping pins, and the second clamping pin is arranged in the locking opening of the welding part of the male terminal.

12. A novel low current high voltage connector according to claim 9, characterized in that: An anti-retraction step is provided on the lower side wall of the second male groove at one end close to the first male groove, and an anti-retraction arm is extended backward from one end of the welding portion of the male terminal close to the pin portion of the male terminal, and the anti-retraction arm rests on the anti-retraction step.

13. A novel low current high voltage connector according to claim 12, characterized in that: A male head repair opening is provided on the front end surface of the male head plastic body, and the male head repair opening is communicated with the second male groove and is opposite to the anti-bounce arm.

14. A novel low-current high-voltage line-to-line connector according to claim 1, characterized in that: It also includes an interlocking retainer, which includes an interlocking receiving bridge arranged on the upper surface of the male plastic body, an interlocking block convexly arranged on the upper surface of the female plastic body, and an interlocking plug-in; A first interlocking protrusion is convexly provided on the front side of the inner wall of the interlocking receiving bridge, and an interlocking slot is provided on the rear end face of the interlocking block, and the interlocking slot penetrates to the upper surface of the interlocking block, and the interlocking plug-in slides along the interlocking slot; stop arms are symmetrically provided on the left and right walls of the interlocking slot; the interlocking plug-in includes a plug-in body and an interlocking elastic arm extending at the front end of the plug-in body, a second interlocking protrusion is convexly provided on the interlocking elastic arm and a first interlocking groove is provided; in an interlocking state, the stop arm abuts against the second interlocking protrusion, and the first interlocking protrusion is arranged in the first interlocking groove.

15. A novel low-current high-voltage line-to-line connector according to claim 14, characterized in that: The front side wall of the interlocking slot is extended backward to be provided with a pressing spring sheet, and the inner wall of the interlocking receiving bridge is provided with an interlocking blind groove and an interlocking slot; interlocking slideways are respectively formed between the pressing spring sheet and the left and right walls of the interlocking slot; the interlocking spring arm slides along the interlocking slideway and the interlocking blind groove; first stop blocks are convexly provided on both sides of the pressing spring sheet; a secondary locking block is convexly provided on the upper surface of the pressing spring sheet. When in the secondary locking state, the first stop block is arranged in the first interlocking groove, and the secondary locking block is arranged in the interlocking slot; And / or, an interlocking partition is horizontally arranged in the middle of the interlocking slot, a plug-in base is arranged on the lower side of the plug-in body, the plug-in base slides under the interlocking partition, and the interlocking elastic arm slides above the interlocking partition.

16. A novel low-current high-voltage line-to-line connector according to claim 1, characterized in that: The front end surface of the mother plastic body is extended forward to be provided with anti-foolproof ribs, and the anti-foolproof ribs are located above the mother plastic unit and / or on both sides of the front end surface of the mother plastic body; The front end surface of the male plastic body is provided with a foolproof groove, and the foolproof groove is located above the male slot and / or on the left and right sides of the front surface of the male plastic body; The foolproof ribs are connected to the mother plastic units located on both sides.

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