High-voltage connector

Abstract

This utility model provides a high-voltage connector, including a sheath, a shielding sleeve, and a housing. The rear end of the housing has a mounting groove and a sealing groove surrounding the mounting groove. The shielding sleeve is fitted onto the sheath and inserted into the housing through the mounting groove. A sealing element covering the gap between the sheath and the housing is fitted into the sealing groove. The sheath includes a first terminal groove and a second terminal groove. The first terminal grooves are located on both sides of the sheath's width, and the second terminal groove is located between the two first terminal grooves. First and second terminals are respectively fitted into the first and second terminal grooves. Addressing the shortcomings of existing technologies, this utility model provides a high-voltage connector with good protection and strong stability.

Description

Technical Field

[0001] This utility model relates to the field of connectors, and in particular to a high-voltage connector. Background Technology

[0002] High-voltage connectors are key components for achieving high-voltage power transmission and ensuring reliable circuit connections. They are commonly used in new energy vehicles. Due to the complex operating conditions of on-board equipment, high-voltage connectors need to withstand multiple environmental challenges such as alternating high and low temperatures, continuous mechanical vibration, and water vapor and dust erosion over long periods. Therefore, stringent requirements are placed on the connection stability, sealing performance, and electromagnetic shielding effectiveness of their structure. Existing high-voltage connectors are generally assembled from a shell, insulating sleeve, conductive terminals, and shielding components. However, most products only have a sealing structure on the front mating surface, and the assembly gap between the shell and the rear of the sleeve lacks a surrounding sealing design. Under temperature stress and long-term action of water vapor, the seal is prone to failure, leading to water vapor and dust intrusion into the connector, causing failures such as decreased insulation performance and terminal oxidation and corrosion, resulting in insufficient protection. Furthermore, the conductive terminals inside the connector rely only on simple barbs or single-point snap-fit ​​structures for limiting their position. Under long-term vibration and insertion / removal impact conditions, the terminals are prone to axial movement, backlash, and loosening, resulting in insufficient reliability. Utility Model Content

[0003] In view of the shortcomings of the existing technology, this utility model provides a high-voltage connector with good protection and strong stability.

[0004] To achieve the above objectives, this utility model provides a high-voltage connector, including a sheath, a shielding sleeve, and a housing. The housing has a slot at its front end and a mounting groove and a sealing groove surrounding the mounting groove at its rear end. The shielding sleeve is fitted onto the sheath and inserted into the housing through the mounting groove. A sealing element that covers the gap between the sheath and the housing is fitted into the sealing groove. The sheath includes a first terminal groove and a second terminal groove. The first terminal grooves are located on both sides of the sheath in the width direction, and the second terminal groove is located between the two first terminal grooves. A first terminal and a second terminal are respectively fitted into the first terminal groove and the second terminal groove.

[0005] The advantages of the above technical solution are as follows: By setting a combination structure of mounting groove and surrounding sealing groove at the rear end of the shell, the shielding sleeve and the sheath can be uniformly inserted and positioned through the mounting groove. This not only facilitates the installation of the shielding sleeve, the sheath, and the shell, but also improves the stability of electromagnetic shielding and prevents the shielding structure from failing under vibration conditions. At the same time, the sealing element in the sealing groove can fully cover the assembly gap between the sheath and the shell, effectively blocking the intrusion path of water vapor and dust, and improving the protection performance of the connector. With the sheath using the distribution of first terminal slots on both sides and second terminal slots in the middle, the installation space can be reasonably allocated according to the differences in terminal current carrying specifications and functions, ensuring sufficient insulation safety distance between different terminals, reducing the risk of high voltage creepage, and ensuring the stability of the connector.

[0006] The present invention can be further configured such that: the first terminal includes spring pieces located on both sides, the spring pieces are extended in the direction corresponding to the rear end of the first terminal, a limiting part is provided in the first terminal groove, and the spring pieces can form an abutment and limiting with the limiting part after the first terminal is inserted into the first terminal groove.

[0007] With further design, during the insertion of the first terminal, the two expanding springs on both sides are squeezed by the groove wall and shrink accordingly. After insertion, the springs elastically reset and open, forming an axial abutment limit with the limiting part in the first terminal groove. This can effectively prevent the terminal from moving backward under vibration and insertion / removal impact conditions. The symmetrical double spring structure is evenly stressed, the terminal holding force is stable and reliable, and the insertion process has low resistance and good guidance, which can improve assembly efficiency and connection stability.

[0008] The present invention can be further configured such that: the sheath includes an operating port near its front end, and the operating port is connected to the limiting part.

[0009] With further modifications, during product maintenance or terminal replacement, operators can insert a special tool through the operating port and directly press the spring to retract and disengage it from the limiting part, thus easily removing the first terminal from the rear end of the sheath, facilitating operation.

[0010] The present invention can be further configured such that: a locking head capable of elastic swinging is provided in the second terminal slot, the second terminal includes a protrusion, and the locking head can be reset to one side to form a locking limit with the protrusion.

[0011] With further design, when the second terminal is inserted, its protrusion can push the elastic locking head forward. After the terminal is in place, the locking head automatically and elastically resets, forming a locking engagement with the protrusion, thus achieving axial anti-loosening limit of the second terminal. This elastic locking structure does not require additional auxiliary fixing and can automatically lock upon insertion, resulting in high assembly efficiency. Moreover, the elastic structure can absorb some mechanical vibration energy and maintain a stable locking force under long-term vibration conditions, preventing the terminal from axially shifting.

[0012] The present invention can be further configured such that: the second terminal slot is provided with an abutment block, and the abutment block can form an abutment limit with the other side of the card head.

[0013] By further configuring the device, after inserting the second terminal, a stop block is then inserted, which can limit the reverse swing stroke of the chuck. When the second terminal is subjected to a backward pulling force, the tendency of the chuck to swing outward under the force of the protrusion is blocked by the stop block, thereby improving the reliability of limiting the second terminal.

[0014] The present invention can be further configured such that: the sheath is provided with a plurality of first ribs and a plurality of second ribs, the first ribs are tapered and tapered towards the front end, the first ribs are used to form a snap-fit ​​limit with the outer shell, the second ribs are sheet-shaped and are used to form a guide sliding fit with the outer shell.

[0015] With further design, the tapered first rib, which tapers towards the front end, can be inserted during the sheath insertion process, reducing insertion resistance. After insertion, it forms a snap-fit ​​with the inner wall of the outer shell, achieving axial anti-dislodgement and limiting of the sheath and the outer shell. The plate-shaped second rib forms a circumferential guiding sliding fit with the inner wall of the outer shell, ensuring accurate circumferential positioning of the sheath during insertion, avoiding skewness and jamming, and facilitating installation.

[0016] The present invention can be further configured such that: a sealing gasket and a tail cap are provided at the rear end of the sheath, the sealing gasket is press-fitted into the sheath, and the tail cap is used to press the sealing gasket tightly into the sheath and form a snap-fit ​​with the sheath.

[0017] With further design, the interference fit sealing gasket can fully fill the gap between the sheath and the inserted cable, achieving radial sealing at the cable entry end and preventing moisture and dust from entering the connector from the cable side. The snap-fit ​​tail cap can form a continuous axial clamping force on the sealing gasket, preventing the sealing gasket from shifting or loosening due to cable pulling or temperature changes, thus ensuring the long-term effectiveness of the sealing structure.

[0018] The present invention may be further configured such that: the front end of the outer shell is fitted with a sealing cap for covering the slot.

[0019] With further design, the sealing cover can provide protection for the slot at the front of the housing and the internal plug terminals during connector transportation, storage, or when not in use, preventing dust and moisture from contaminating the plug contact surface and preventing damage to the plug surface or terminals caused by external impacts. Attached Figure Description

[0020] Figure 1 This is a perspective view of an embodiment of the present utility model; Figure 2This is a front view of an embodiment of the present utility model; Figure 3 This is an embodiment of the present utility model. Figure 2 Sectional view at CC; Figure 4 This is a front view of an embodiment of the present utility model; Figure 5 This is an embodiment of the present utility model. Figure 4 Sectional view at point DD; Figure 6 This is a schematic diagram of the outer shell in an embodiment of the present utility model; Figure 7 This is a schematic diagram of the sheath structure in an embodiment of the present utility model. Figure 1 ; Figure 8 This is a schematic diagram of the sheath structure in an embodiment of the present utility model. Figure 2 ; Figure 9 This is a schematic diagram of the shielding sleeve in an embodiment of the present invention; Wherein: sheath 1; first terminal slot 11; second terminal slot 12; limiting part 13; operating port 14; clamp head 15; abutment block 16; first rib 17; second rib 18; shielding sleeve 2; outer shell 3; slot 31; mounting groove 32; sealing groove 33; sealing element 4; first terminal 5; spring piece 51; second terminal 6; protrusion 61; sealing gasket 7; tail cover 8; sealing cover 9. Detailed Implementation

[0021] An embodiment of the high-voltage connector of this utility model is as follows: Figure 1-9 As shown: It includes a sheath 1, a shielding sleeve 2, and a housing 3. The front end of the housing 3 is provided with a slot 31, and the rear end of the housing 3 is provided with a mounting groove 32 and a sealing groove 33 surrounding the mounting groove 32. The shielding sleeve 2 is fitted onto the sheath 1 and inserted into the housing 3 through the mounting groove 32. A sealing element 4 that covers the gap between the sheath 1 and the housing 3 is fitted in the sealing groove 33. The sheath 1 includes a first terminal groove 11 and a second terminal groove 12. The first terminal groove 11 is located on both sides of the width direction of the sheath 1, and the second terminal groove 12 is located between the two first terminal grooves 11. A first terminal 5 and a second terminal 6 are respectively fitted in the first terminal groove 11 and the second terminal groove 12.

[0022] The first terminal 5 includes spring pieces 51 located on both sides. The spring pieces 51 are extended in the direction corresponding to the rear end of the first terminal 5. A limiting part 13 is provided in the first terminal groove 11. The spring pieces 51 can form an abutment limit with the limiting part 13 after the first terminal 5 is inserted into the first terminal groove 11.

[0023] The sheath 1 includes an operating port 14 near its front end, which is connected to the limiting part 13.

[0024] The second terminal slot 12 is provided with a snap head 15 that can swing elastically, and the second terminal 6 includes a protrusion 61. The snap head 15 can be reset to one side and form a snap-fit ​​limit with the protrusion 61.

[0025] The second terminal slot 12 is provided with an abutment block 16, which can form an abutment limit with the other side of the card head 15.

[0026] The sheath 1 is provided with a plurality of first ribs 17 and a plurality of second ribs 18. The first ribs 17 are tapered and gradually decrease in size towards the front end. The first ribs 17 are used to form a snap-fit ​​limit with the outer shell 3. The second ribs 18 are sheet-like and are used to form a guide sliding fit with the outer shell 3.

[0027] The rear end of the sheath 1 is provided with a sealing gasket 7 and a tail cap 8. The sealing gasket 7 is press-fitted into the sheath 1, and the tail cap 8 is used to press the sealing gasket 7 into the sheath 1 and form a snap-fit ​​with the sheath 1.

[0028] The front end of the outer casing 3 is fitted with a sealing cap 9 for covering the slot.

[0029] The above examples are merely one preferred embodiment of this utility model. Ordinary variations and substitutions made by those skilled in the art within the scope of this utility model's technical solution are all included within the protection scope of this utility model.

Claims

1. A high-voltage connector, comprising a sheath, a shielding sleeve, and a housing, wherein a slot is provided at the front end of the housing, characterized in that: The rear end of the outer shell is provided with a mounting groove and a sealing groove surrounding the mounting groove. The shielding sleeve is fitted onto the protective sleeve and inserted into the outer shell through the mounting groove. A sealing element that covers the gap between the protective sleeve and the outer shell is fitted in the sealing groove. The protective sleeve includes a first terminal groove and a second terminal groove. The first terminal groove is located on both sides in the width direction of the protective sleeve, and the second terminal groove is located between the two first terminal grooves. A first terminal and a second terminal are respectively fitted in the first terminal groove and the second terminal groove.

2. The high-voltage connector according to claim 1, characterized in that: The first terminal includes spring pieces located on both sides. The spring pieces are extended in the direction corresponding to the rear end of the first terminal. A limiting part is provided in the first terminal slot. The spring pieces can form an abutment limit with the limiting part after the first terminal is inserted into the first terminal slot.

3. The high-voltage connector according to claim 2, characterized in that: The sheath includes an operating port near its front end, which connects to a limiting part.

4. The high-voltage connector according to claim 1, 2, or 3, characterized in that: The second terminal slot is provided with a locking head that can swing elastically. The second terminal includes a protrusion. The locking head can be reset to one side and form a locking limit with the protrusion.

5. The high-voltage connector according to claim 4, characterized in that: The second terminal slot is provided with an abutment block, which can form an abutment limit with the other side of the card head.

6. The high-voltage connector according to claim 1, 2, 3, or 5, characterized in that: The sheath is provided with a plurality of first ribs and a plurality of second ribs. The first ribs are tapered and tapered towards the front end. The first ribs are used to form a snap-fit ​​and limit with the outer shell. The second ribs are sheet-shaped and are used to form a guide sliding fit with the outer shell.

7. The high-voltage connector according to claim 1, 2, 3, or 5, characterized in that: The rear end of the sheath is provided with a sealing gasket and a tail cap. The sealing gasket is press-fitted into the sheath, and the tail cap is used to press the sealing gasket tightly into the sheath and form a snap-fit ​​with the sheath.

8. The high-voltage connector according to claim 1, 2, 3, or 5, characterized in that: The front end of the housing is fitted with a sealing cap to cover the slot.

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