A self-cleaning high-power energized module and a connector using the same
By using the self-cleaning high-power charging module's socket and pin assemblies, and employing a combination of elastic guide sleeves and sealing rings, the problem of impurity accumulation in the charging gun under harsh environments is solved. This achieves self-cleaning of the pins and sockets, ensuring good contact and improving charging efficiency and safety.
Patent Information
- Application Number
- CN202521979708.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-15
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-15
AI Technical Summary
Dust, sand, and other impurities can easily accumulate around or inside the pins of a charging gun in harsh environments, leading to poor contact and the risk of abnormal charging, overheating, or even short circuits.
A self-cleaning high-power energized module was designed, including a socket assembly and a pin assembly. The combination structure of an elastic guide sleeve, a sealing ring and a drain hole enables the self-cleaning function of the pins and sockets, and the impurities are discharged by pushing the cleaning end.
It ensures that the contact surfaces of the pins and sockets are clean to avoid poor contact, improves charging performance, extends service life, is suitable for high-current charging in harsh environments, and has a simple structure and high safety.
Smart Images
Figure CN224683504U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of connectors, and in particular to a self-cleaning high-power power-conducting module and a connector using the same. Background Technology
[0002] With the explosive growth of the new energy vehicle market, charging anxiety has become a major pain point in the industry. High-power fast charging technology effectively solves this problem. To improve current carrying capacity, the outer diameter of the charging gun's pins and the inner diameter of the charging socket's hole are correspondingly increased. To meet IPXXB anti-finger contact requirements, small pins are often used inside the socket as an anti-finger contact structure, and deep holes are reserved in the pins to accommodate the small pins. The problem is that when the charging gun is used in a harsh environment, there is no protective structure around or inside the pins. The deep holes of unused pins are exposed to the harsh environment, and dust, sand and other impurities can easily accumulate inside the deep holes, leading to poor contact and abnormal charging, or even dangers such as overheating or short circuits. Utility Model Content
[0003] To address one or more of the aforementioned problems, this invention provides a self-cleaning high-power power-conducting module and a connector using the same.
[0004] According to one aspect of the present invention, a self-cleaning high-power power-conducting module includes:
[0005] The socket assembly includes a socket body, an elastic guide sleeve, and an anti-finger pin. One end of the socket body is provided with an axial insertion hole. The elastic guide sleeve is elastically interference-fitted into the inner wall of the insertion hole. The rear end of the anti-finger pin is connected to the end wall of the insertion hole, and the insulating head of its front end protrudes from the insertion hole. The first sealing ring is interference-fitted onto the outer wall of the front end of the anti-finger pin to form a pushing cleaning end.
[0006] The pin assembly has a central shaft hole with a blind hole structure at one end of the pin body and multiple drain holes in the middle section. The front end of the central shaft hole is snapped to the insulating cap and its end is connected to the drain hole. The central shaft hole and the anti-finger pin are set with a small gap and are elastically press-fitted with the first sealing ring.
[0007] When the socket assembly and the pin assembly are coupled together, the pin body is inserted into the socket and is interference-fitted by the elastic guide sleeve. The anti-touch pin passes through the insulating cap and enters the central shaft hole, pushing the cleaning end to push the foreign matter accumulated in the central shaft hole and discharge it to the outside through the drain hole, thus completing the self-cleaning process.
[0008] In some implementations, the outer peripheral wall of the middle section of the pin body is provided with a plurality of drain holes in a circular array.
[0009] In some embodiments, a first shoulder is provided in the middle of the pin body, and a drain hole is close to the first shoulder; a second sealing groove on the right side of the first shoulder is fitted with a second sealing ring, and the second sealing ring elastically presses against the fixing shaft hole of the charging gun housing.
[0010] In some embodiments, a first annular groove is formed at the end of the central shaft hole, which connects to the drain hole.
[0011] In some embodiments, the first sealing ring is any one of O-ring, rectangular, V-ring, and Y-ring.
[0012] In some embodiments, when the first sealing ring is V-shaped, the front end of the anti-touch pin is provided with a first sealing ring groove with a rectangular radial cross section. The first sealing ring is a rubber seal with multiple V-shaped protrusions on its outer circumferential surface and V-shaped grooves disposed between adjacent protrusions. The first sealing ring is installed in the first sealing ring groove.
[0013] In some embodiments, the threaded post at the rear end of the anti-finger pin connects to the center threaded hole of the insertion hole and its shoulder fits against the end wall of the connection.
[0014] The insulating head has an integrally formed circular retaining ridge in the central blind hole at the rear end of the insulating column. The outer peripheral wall of the connecting column at the front end of the anti-touch pin has a circular second retaining groove. The connecting column is inserted into the central blind hole with equal diameter and the retaining ridge is sleeved in the second retaining groove.
[0015] In some embodiments, the elastic guide sleeve is any one of a spring sleeve, a crown spring, and a slotted structure; the insulating head and the insulating cap are elastic insulators;
[0016] The socket body and the pin body are made of copper.
[0017] According to another aspect of the present invention, a connector includes: a charging gun body, a charging base body, and multiple sets of any of the above-mentioned power-conducting modules, wherein the gun shell of the charging gun body is fixedly sleeved with the pin assembly of the multiple power-conducting modules, and the base shell of the charging base body is fixedly sleeved with the socket assembly of the multiple power-conducting modules.
[0018] The housing has multiple radially connected exhaust holes inside the insertion hole, with the exhaust holes facing the drain hole.
[0019] In some embodiments, the end of the insertion hole is provided with a foreign matter annular groove, and the foreign matter discharge hole is located in the foreign matter groove.
[0020] The advantages of this connector are: it has a self-cleaning pin assembly, ensuring that the contact surface is clean and free of impurities, achieving good coupling and contact connection between the pin module and the socket module, eliminating charging abnormalities caused by poor contact, providing high charging performance, long service life, and high safety, making it suitable for high-power, high-current charging scenarios in harsh external environments. Attached Figure Description
[0021] Figure 1 This is a three-dimensional schematic diagram of a self-cleaning high-power energized module before coupling, according to one embodiment of the present invention.
[0022] Figure 2 for Figure 1 The diagram shows the front view of the energized module during coupling.
[0023] Figure 3 for Figure 2 A cross-sectional schematic diagram of the power-on module shown.
[0024] Figure 4 for Figure 1 A three-dimensional exploded view of the socket assembly shown;
[0025] Figure 5 for Figure 1 The diagram shows a three-dimensional representation of the pin module installed on the main body of the charging dock.
[0026] Socket assembly 01, socket body 1, plug hole 10, positioning shoulder 11, elastic guide sleeve 2, anti-finger pin 3, first sealing ring groove 30, threaded post 31, shaft shoulder 32, connecting post 33, second slot 34, first sealing ring 4, insulating head 7, snap 71, rivet sleeve 8;
[0027] Pin assembly 02, pin body 5, central shaft hole 50, drain hole 51, first shoulder 52, second sealing groove 53, first annular groove 54, insulating cap 6, clip 61;
[0028] Power-on module 00, charging base body 03, base shell 030, socket 031, foreign object venting hole 032, foreign object groove 033. Detailed Implementation
[0029] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.
[0030] Figures 1 to 5 A self-cleaning high-power power-conducting module according to one embodiment of the present invention is schematically shown. As shown, the self-cleaning high-power power-conducting module includes:
[0031] The socket assembly 01 includes a socket body 1, an elastic guide sleeve 2, and an anti-finger pin 3. One end of the socket body 1 has an axial insertion hole 10. The elastic guide sleeve 2 is elastically interference-fitted into the inner wall of the insertion hole 10. The elastic guide sleeve 2 is preferably any one of a spring sleeve, a crown spring, or a slotted structure. The rear end of the anti-finger pin 3 is connected to the end wall of the insertion hole 10, and its front end insulating head 7 protrudes from the insertion hole 10. A first sealing ring 4 is interference-fitted onto the outer wall of the front end of the anti-finger pin 3 to form a pushing cleaning end. The first sealing ring 4 is preferably any one of an O-type, rectangular, V-type, or Y-type.
[0032] The pin assembly 02 has a pin body 5 with a central shaft hole 50 at one end and multiple drain holes 51 in the middle section. Preferably, the outer peripheral wall of the middle section of the pin body 5 has multiple drain holes 51 arranged in a circular array. The front end of the central shaft hole 50 is snap-fitted to the insulating cap 6 and its end is connected to the drain hole 51. The central shaft hole 50 and the anti-finger pin 3 are separated by a small gap and are elastically press-fitted with the first sealing ring 4.
[0033] When the socket assembly 01 and the pin assembly 02 are coupled together, the pin body 5 is inserted into the socket 10 and is interference-fitted by the elastic guide sleeve 2. The anti-touch pin 3 passes through the insulating cap 6 and enters the central shaft hole 50. The cleaning end is pushed by air or by contact to push the foreign matter accumulated in the central shaft hole 50 and discharged to the outside through the drain hole 51, thus completing the self-cleaning process.
[0034] This self-cleaning high-power charging module uses a combination of a first sealing ring 4 and an anti-finger pin 3 as the pushing cleaning end. The pushing cleaning end and the plug hole 10 are in a sealed sliding connection. When the pushing cleaning end enters the plug hole 10, the plug hole 10 becomes a cavity with only the drain hole 51 for air to exit. The pushing cleaning end pushes the airflow mixed with dust, sand and other impurities to move backward to the end, and the air is discharged through the drain hole 51, thus achieving self-cleaning of the contact surface of the plug hole 10. Its beneficial effects are: First, before coupling connection, the contact surface of the pin module 02 is cleaned by the pushing cleaning end, ensuring that the contact surface is clean and free of impurities, achieving good coupling contact connection between the pin module 02 and the socket module 01, without charging abnormalities caused by poor contact, high charging performance, long service life, and high safety, and is suitable for high-power high-current charging scenarios in harsh external environments; Second, the structure is simple and easy to process and manufacture.
[0035] Furthermore, the pin body 5 has a first shoulder 52 in the middle, and the drain hole 51 is close to the first shoulder 52; a second sealing groove 53 is provided on the right side of the first shoulder 52, and a second sealing ring is interference-fitted into the second sealing groove 53. The rear end of the pin body 5 is fitted into the fixing shaft hole of the charging gun housing, and the second sealing ring is elastically interference-fitted into the fixing shaft hole. The beneficial effect is that this setting effectively prevents impurities from entering the charging housing, ensuring the normal and stable operation of the electronic components inside the housing.
[0036] Furthermore, a first annular groove 54 is formed at the end of the central shaft hole 50, and the first annular groove 54 connects to the drain hole 51. The beneficial effect is that this setting can accelerate the discharge speed of impurities.
[0037] Furthermore, it also includes a metal elastomer rivet sleeve 8, a positioning shoulder 11 formed inside the insertion hole 10 and the rivet sleeve 8 riveted to the outer end, and the rear end of the elastic guide sleeve 2 fitting against the positioning shoulder 11 and the front end being pressed against by the rivet sleeve 8. Its beneficial effect is that the connection structure is strong and can ensure good anti-finger-touch function.
[0038] Furthermore, when the first sealing ring 4 is V-shaped, the front end of the anti-touch pin 3 is provided with a first sealing ring groove 30 with a rectangular radial cross-section. The first sealing ring 4 is preferably a rubber seal with multiple V-shaped protrusions on its outer circumferential surface and V-shaped grooves disposed between adjacent protrusions. The first sealing ring 4 is installed in the first sealing ring groove 30. Its beneficial effect is that the first sealing ring 4 has a good sealing effect and ensures good cleaning function.
[0039] Preferably, the threaded post 31 at the rear end of the anti-finger pin 3 is fixedly connected to the central threaded hole of the end wall of the insertion hole 10, and its shoulder 32 fits against the end wall of the connection. The insulating head 7 includes an insulating post, and an annular retaining ridge 71 is integrally provided in the central blind hole at the rear end of the post. The outer peripheral wall of the connecting post 33 at the front end of the anti-finger pin 3 is provided with an annular second retaining groove 34. The connecting post 33 is inserted into the central blind hole with equal diameter, and the retaining ridge 71 is sleeved in the second retaining groove 34. The beneficial effect is that this setting provides a tight connection and can ensure a good anti-finger function.
[0040] Preferably, the insulating cap 6 includes a ring body, a large-diameter head body integrally connected to the front end of the ring body, and a large-diameter locking head 61 integrally connected to the inner end of the ring body. The locking head 61 has multiple radial notches in the middle, the head body has a chamfered surface, the ring body fits into the port of the central shaft hole 50, and the locking head 61 is interference-fitted into the first slot 51 of the central shaft hole 50; the shaft hole of the insulating cap 6 is slightly larger than or equal to the central shaft hole 50.
[0041] Preferably, the insulating head 7 and the insulating cap 6 are elastic insulators; the socket body 1 and the pin body 5 are made of copper.
[0042] A connector includes: a charging gun body, a charging base body 03, and multiple sets of any of the above-mentioned power-conducting modules 00. The gun shell of the charging gun body is fixedly sleeved with the pin assembly 02 of the multiple power-conducting modules 00, and the base shell 030 of the charging base body 03 is fixedly sleeved with the socket assembly 01 of the multiple power-conducting modules 00.
[0043] The housing 030 has a plurality of radially communicating drainage holes 032 in the insertion hole 031, with the drainage holes 032 facing the drain hole 51. Preferably, the insertion hole 031 has a foreign matter groove 033 at its end, and the drainage holes 032 are located in the foreign matter groove 033.
[0044] The advantages of this connector are: it has a self-cleaning pin assembly 02, which ensures that the contact surface is clean and free of impurities, and achieves good coupling contact between the pin module 02 and the socket module 01. It eliminates charging abnormalities caused by poor contact, has high charging performance, long service life, and high safety, and is suitable for high-power, high-current charging scenarios in harsh external environments.
[0045] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.
Claims
1. A self-cleaning high-power power-conducting module, characterized in that, include: The socket assembly (01) includes a socket body (1), an elastic guide sleeve (2), and an anti-finger pin (3). One end of the socket body (1) is provided with an axial insertion hole (10). The elastic guide sleeve (2) is elastically interference-fitted into the inner wall of the insertion hole (10). The rear end of the anti-finger pin (3) is connected to the end wall of the insertion hole (10), and the insulating head (7) at its front end is exposed in the insertion hole (10). The first sealing ring (4) is interference-fitted onto the outer wall of the front end of the anti-finger pin (3) to form a pushing cleaning end. The pin assembly (02) has a central shaft hole (50) with a blind hole structure at one end and multiple drain holes (51) in the middle section. The central shaft hole (50) is snapped to the front end of the insulating cap (6) and its end is connected to the drain hole (51). The central shaft hole (50) and the anti-finger pin (3) are set with a small gap and are elastically press-fitted with the first sealing ring (4). When the socket assembly (01) and the pin assembly (02) are coupled together, the pin body (5) is inserted into the socket (10) and is press-fitted by the elastic guide sleeve (2). The anti-finger pin (3) passes through the insulating cap (6) and enters the central shaft hole (50). The cleaning end pushes the foreign matter accumulated in the central shaft hole (50) and discharges it to the outside through the drain hole (51), thus completing the self-cleaning process.
2. The self-cleaning high-power power-conducting module according to claim 1, characterized in that, The outer peripheral wall of the middle section of the needle body (5) is provided with multiple drainage holes (51).
3. The self-cleaning high-power power-conducting module according to claim 2, characterized in that, The pin body (5) has a first shoulder (52) in the middle, and the drain hole (51) is close to the first shoulder (52); the second sealing groove (53) on the right side of the first shoulder (52) is fitted with a second sealing ring, and the second sealing ring elastically presses against the fixing shaft hole of the charging gun housing.
4. A self-cleaning high-power power-conducting module according to claim 2, characterized in that, The end of the central shaft hole (50) forms a first annular groove (54) that connects to the drain hole (51).
5. A self-cleaning high-power power-conducting module according to claim 1, characterized in that, The first sealing ring (4) is any one of O-type, rectangular, V-type and Y-type.
6. A self-cleaning high-power power-conducting module according to claim 5, characterized in that, When the first sealing ring (4) is V-shaped, the front end of the anti-touch pin (3) is provided with a first sealing ring groove (30) with a rectangular radial cross section. The first sealing ring (4) is a rubber seal with multiple V-shaped protrusions on its outer circumferential surface and V-shaped grooves between adjacent protrusions. The first sealing ring (4) is installed in the first sealing ring groove (30).
7. A self-cleaning high-power power-conducting module according to claim 1, characterized in that, The threaded post (31) at the rear end of the anti-finger-touch pin (3) is connected to the center threaded hole of the insertion hole (10), and its shoulder (32) is attached to the end wall; The insulating head (7) has an integrally formed circular retaining ridge (71) in the central blind hole at the rear end of the insulating column. The outer peripheral wall of the connecting post (33) at the front end of the anti-finger-touch pin (3) has a circular second retaining groove (34). The connecting post (33) is inserted into the central blind hole with equal diameter and the retaining ridge (71) is sleeved in the second retaining groove (34).
8. A self-cleaning high-power power-conducting module according to claim 1, characterized in that, The elastic guide sleeve (2) is any one of spring sleeve, crown spring and slotted structure; the insulating head (7) and insulating cap (6) are elastic insulators; The socket body (1) and the pin body (5) are made of copper.
9. A connector, characterized in that, include: The charging gun body, the charging base body (03), and multiple sets of power-conducting modules (00) as described in any one of claims 1 to 8, wherein the gun shell of the charging gun body is fixedly sleeved with the pin assembly (02) of multiple power-conducting modules (00), and the base shell (030) of the charging base body (03) is fixedly sleeved with the socket assembly (01) of multiple power-conducting modules (00); The housing (030) has a plurality of radially communicating drainage holes (032) in the insertion hole (031), and the drainage holes (032) are directly opposite the drain hole (51).
10. A connector according to claim 9, characterized in that, The insertion hole (031) has a foreign object groove (033) at its end, and the foreign object discharge hole (032) is located in the foreign object groove (033).