Power connector

Abstract

The utility model provides a kind of power connector, it includes base and the crown spring terminal fixed in the base, the base has the installation part and cylinder body connected with upper and lower, the crown spring terminal is housed in the cylinder body, the installation part has the first surface and the second surface oppositely arranged in upper and lower direction, the cylinder body is formed from the first surface upward protruding, the installation part also has the locating groove formed from the first surface downward recess, the power connector also has a plurality of fixed parts fixed in the locating groove, the fixed part is peripherally arranged in the periphery of the cylinder body to be fixed on external circuit board with power connector. The utility model power connector can adapt to different specifications of docking connector and stable and reliable electric connection.

Description

Technical Field

[0001] This utility model relates to a power connector. Background Technology

[0002] Traditional power connectors typically have a base and several power terminals fixed within the base. These power terminals can only accept mating pins of a specific size. To meet different current requirements and accommodate products with varying power levels, multiple sizes of power terminals need to be designed, thus increasing customization costs. Furthermore, the traditional power terminals and mating pins form an electrical connection through a single-point contact, which can easily lead to momentary contact failure in vibrating environments, resulting in instantaneous power outages.

[0003] In view of this, it is necessary to improve the existing power connectors to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a power connector that can adapt to different specifications of mating connectors and has a stable and reliable electrical connection.

[0005] To achieve the above-mentioned utility model objectives, this utility model provides a power connector, which includes a base and a crown spring terminal fixed within the base. The base has a mounting portion and a cylindrical body connected vertically. The crown spring terminal is housed within the cylindrical body. The mounting portion has a first surface and a second surface arranged opposite to each other in the vertical direction. The cylindrical body protrudes upward from the first surface. The mounting portion also has a positioning groove recessed downward from the first surface. The power connector further has a plurality of fixing members fixed within the positioning groove. The fixing members are arranged around the periphery of the cylindrical body to fix the power connector to an external circuit board.

[0006] As a further improvement of this utility model, each of the fixing members has a connecting body, a plurality of first fixing feet located on the upper side of the connecting body, and a plurality of second fixing feet located on the lower side of the connecting body. The second fixing feet are inserted into and fixed in the positioning groove, and the first fixing feet are used to fix to the external circuit board.

[0007] As a further improvement of this utility model, each of the fixing members and the two adjacent fixing members are arranged at an angle, and the first fixing foot and the second fixing foot are both fisheye shaped.

[0008] As a further improvement of this utility model, the positioning groove is formed into a rectangular annular groove, and the projection of the cylinder on the horizontal plane is located inside the projection of the positioning groove on the horizontal plane.

[0009] As a further improvement of this utility model, the crown spring terminal includes a pair of ends arranged opposite to each other in the vertical direction and a plurality of spring pieces connecting the pair of ends. The plurality of spring pieces are evenly arranged in the circumferential direction, and the extension direction of each spring piece is not parallel to the axial direction of the crown spring terminal so that it is inclined.

[0010] As a further improvement of this utility model, each of the reeds has a first end and a second end disposed opposite to each other in its extension direction, the first end and the second end being completely offset in the vertical direction, and the first end of each reed being at least partially located within the circumferential extension range of the second end of another reed disposed at a interval of one reed.

[0011] As a further improvement of this utility model, the power connector also has an insulating cover sleeved on the outside of the cylinder. The insulating cover has at least one pair of snap-fit ​​protrusions protruding in the direction of its axis. The cylinder is provided with a snap-fit ​​groove recessed on its outer wall surface. The snap-fit ​​groove extends continuously along the circumferential direction of the cylinder. The snap-fit ​​protrusions cooperate with the snap-fit ​​groove to fix the insulating cover to the outside of the cylinder.

[0012] As a further improvement of this utility model, the insulating cover includes an end cover and a circumferential cover disposed perpendicular to the end cover. The circumferential cover has a plurality of protrusions on its inner wall surface. At least one of the protrusions is provided between two adjacent snap-fit ​​protrusions. Each of the protrusions has an inclined guide surface on its side away from the end cover.

[0013] As a further improvement of this utility model, a gap space is formed between the bottom end of the insulating cover and the first surface of the mounting part, and the first fixing foot is located in the gap space in the vertical direction.

[0014] As a further improvement of this utility model, the insulating cover includes an end cover and a circumferential cover perpendicular to the end cover. The end cover has a plurality of through holes formed through it in the vertical direction. The through holes and the buckle protrusions are arranged in a one-to-one correspondence and aligned in the vertical direction.

[0015] This utility model power connector, through the design of the crown spring terminal, can adaptively adjust its inner diameter when using different specifications of mating pin terminals, ensuring that sufficient contact force is always provided to accommodate different specifications of pin terminals. It also effectively reduces contact resistance, power loss, and significantly improves the stability of current transmission. Simultaneously, the crown spring terminal enables stable multi-point contact, reducing arcing and heat generation, delaying oxidation and wear on the contact surface, and extending the service life of the power connector. Even in vibrating environments, it ensures the continuity and stability of current transmission, avoiding instantaneous power outages, thus achieving high reliability and high current transmission. Furthermore, the large mounting portion provides a contact area with the external circuit board that is much larger than the simple cylindrical body, providing greater resistance to bending moments and preventing the power connector from shaking or twisting during insertion and removal. The fixing components surrounding the cylindrical body provide strong mechanical fixing force, allowing the cylindrical body and its internal crown spring terminal to withstand repeated insertion and removal and high-intensity vibrations, further ensuring stable and reliable electrical contact. Attached Figure Description

[0016] Figure 1 This is a three-dimensional assembly diagram of the power connector of this utility model.

[0017] Figure 2 yes Figure 1 An exploded 3D view of the power connector shown.

[0018] Figure 3 yes Figure 2 A perspective view of the insulating cover in the power connector shown.

[0019] Figure 4 yes Figure 2 Side view of the crown spring terminal in the power connector shown.

[0020] Figure 5 yes Figure 1 The power connector shown is a cross-sectional view. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Please refer to Figures 1 to 5 The present invention is shown as a preferred embodiment of the power connector 100, which includes a base 1 and a crown spring terminal 2 fixed in the base 1.

[0023] The base 1 has a mounting portion 12 and a cylindrical body 13 connected vertically. The crown spring terminal 2 is housed in the cylindrical body 13. The mounting portion 12 has a first surface 1201 and a second surface 1202 that are arranged opposite each other in the vertical direction. The cylindrical body 13 protrudes upward from the first surface 1201. The mounting portion 12 also has a positioning groove 121 that is recessed downward from the first surface 1201. The power connector 100 also has a plurality of fixing members 3 that are fixed in the positioning groove 121. The fixing members 3 are arranged around the periphery of the cylindrical body 13 to fix the power connector 100 to an external circuit board (not shown).

[0024] Thus, by setting the crown spring terminal 2, when different specifications of mating pin terminals are required, the crown spring terminal 2 can adaptively adjust its inner diameter to ensure that sufficient contact force can always be provided to adapt to different specifications of pin terminals, and can effectively reduce contact resistance, reduce power loss, and significantly improve the stability of current transmission.

[0025] Meanwhile, the crown spring terminal 2 enables stable multi-point contact, reducing arcing and heat generation, delaying oxidation and wear on the contact surface, and extending the service life of the power connector 100. Even in vibrating environments, it ensures the continuity and stability of current transmission, preventing momentary power outages, thus achieving high reliability and high current transmission. Furthermore, the large mounting portion 12 provides a contact area with the external circuit board that is much larger than that of the simple cylindrical body 13, providing greater resistance to bending moments and preventing the power connector 100 from shaking or twisting during insertion and removal. The fixing member 3, surrounding the cylindrical body, provides strong mechanical fixing force, enabling the cylindrical body 13 and its internal crown spring terminal 2 to withstand repeated insertion and removal and high-intensity vibrations, further ensuring stable and reliable electrical contact.

[0026] Please refer to Figure 1 , Figure 2 and Figure 5 As shown, each of the fixing members 3 has a connecting body 31, a plurality of first fixing feet 32 ​​located on the upper side of the connecting body 31, and a plurality of second fixing feet 34 located on the lower side of the connecting body 31. The second fixing feet 34 are inserted into and fixed in the positioning groove 121, and the first fixing feet 32 ​​are used to fix to the external circuit board.

[0027] Thus, through the cooperation of the positioning groove 121 and the second fixing foot 34, multiple fixing parts 3 can be securely and stably surrounded around the cylinder 13 to provide uniform support force, thereby maintaining the center position of the crown spring terminal 2 for easy docking; the power connector 100 is mounted and fixed on the external circuit board by the first fixing foot 32, and the axial insertion and extraction force, lateral stress and vibration from the docking pin terminal can be effectively absorbed, thereby ensuring stable and reliable electrical contact.

[0028] In this embodiment, the connecting body 31 of each of the fasteners 3 is straight. The first fixing feet 32 ​​on the upper side of each fastener are arranged in a row, and the second fixing feet 34 on the lower side are also arranged in a row. The first fixing feet 32 ​​and the second fixing feet 34 are arranged in a one-to-one correspondence and aligned vertically. In other embodiments, the first fixing feet 32 ​​and the second fixing feet 34 may also be staggered in the extension direction of the corresponding connecting body 31.

[0029] Each of the aforementioned fasteners 3 and its two adjacent fasteners 3 are arranged at an angle, and the first fixing foot 32 and the second fixing foot 34 are both fisheye-shaped. In this way, by arranging the two adjacent fasteners 3 at an angle, uniform and all-around mechanical support can be provided, maximizing resistance to multi-dimensional stress and torque; the fisheye-shaped first fixing foot 32 and the second fixing foot 34 achieve excellent fatigue resistance and reliability, especially in harsh thermal cycling and vibration environments.

[0030] Specifically, in this embodiment, two adjacent fasteners 3 are arranged perpendicular to each other, and each fastener 3 and its two adjacent fasteners 3 are arranged perpendicularly, so as to form a rectangular fixing structure on the base 1.

[0031] The positioning groove 121 is formed into a rectangular annular groove, and the projection of the cylinder 13 on the horizontal plane is located inside the projection of the positioning groove 121 on that horizontal plane. In this way, the base 1 is reliably fixed to the external circuit board by the positioning groove 121 provided on the periphery of the cylinder 13, thereby achieving good anti-torsion and anti-bending performance and ensuring the reliability of long-term connection.

[0032] Please refer to Figure 2 , Figure 4 and Figure 5 As shown, the crown spring terminal 2 includes a pair of ends 21 arranged opposite each other in the vertical direction and a plurality of spring pieces 23 connecting the pair of ends 21. The plurality of spring pieces 23 are evenly arranged in the circumferential direction, and the extension direction of each spring piece 23 is not parallel to the axial direction of the crown spring terminal 2 so that it is inclined.

[0033] Each of the springs 23 has a first end 231 and a second end 232 disposed opposite to each other in its extending direction. The first end 231 and the second end 232 are completely offset in the vertical direction. The first end 231 of each spring 23 is at least partially located within the circumferential extension range of the second end 232 of another spring 23 disposed one spring 23 apart from it. In this way, by performing a specific torsional design on the springs 23, not only can a smooth insertion and removal feel be obtained, but the fatigue life of the springs 23 can also be improved.

[0034] In this embodiment, the crown spring terminal 2 is simultaneously housed in the cylinder 13 and the mounting portion 12, wherein the first end 231 is housed in the mounting portion 12 and the second end 232 is housed in the cylinder 13.

[0035] Please refer to Figures 1 to 3 and Figure 5 As shown, the power connector 100 also has an insulating cover 4 sleeved on the outside of the cylindrical body 13. The insulating cover 4 has at least one pair of snap-fit ​​protrusions 421 protruding in the direction of its axis. The cylindrical body 13 is provided with a snap-fit ​​groove 131 recessed on its outer wall surface. The snap-fit ​​groove 131 extends continuously along the circumferential direction of the cylindrical body 13. The snap-fit ​​protrusions 421 cooperate with the snap-fit ​​groove 131 to fix the insulating cover 4 to the outside of the cylindrical body 13.

[0036] The insulating cover 4 includes an end cover 41 and a circumferential cover 42 perpendicular to the end cover 41. The circumferential cover 42 has a plurality of protrusions 423 protruding from its inner wall surface. At least one of the protrusions 423 is provided between two adjacent snap-fit ​​protrusions 421. Each of the protrusions 423 has an inclined guide surface 4231 on its side away from the end cover 41.

[0037] A gap space G is formed between the bottom end 420 of the insulating cover 4 and the first surface 1201 of the mounting part 12, and the first fixing foot 32 is located within the gap space G in the vertical direction.

[0038] The end cap 41 is provided with a plurality of through holes 412 extending through it in the vertical direction. The through holes 412 and the snap-fit ​​protrusions 421 are provided one-to-one and aligned in the vertical direction. In this way, by providing through holes 412 on the end cap 41, the expensive side core-pulling mechanism can be eliminated, significantly reducing the mold cost. The simplified mold structure is more robust, has fewer moving parts, and significantly reduces the failure rate, thereby improving the reliability of the mold. At the same time, it can also achieve perfect demolding and ensure the molding quality of the snap-fit ​​protrusions 421 and the entire insulating cover 4.

[0039] The power connector 100 of this utility model, through the setting of the crown spring terminal 2, can adaptively adjust its inner diameter to ensure that it can always provide sufficient contact force to adapt to different specifications of pin terminals, and can effectively reduce contact resistance, reduce power loss, and significantly improve the stability of current transmission. At the same time, the crown spring terminal 2 can achieve multi-point stable contact, reduce arcing and heat generation, delay oxidation and wear of contact surfaces, extend the service life of the power connector 100, and even in a vibrating environment, it can ensure the continuity and stability of current transmission, avoid instantaneous power outages, and thus achieve the purpose of high reliability and high current transmission. In addition, the wide mounting part 12 makes its contact area with the external circuit board much larger than that of the simple cylindrical body 13, thereby providing greater bending moment resistance and preventing the power connector 100 from shaking or twisting during insertion and removal. Through the fixing member 3 surrounding the periphery of the cylindrical body, a strong mechanical fixing force is provided on the periphery of the cylindrical body 13, so that the cylindrical body 13 and the crown spring terminal 2 inside can withstand repeated insertion and removal and high-intensity vibration, further ensuring stable and reliable electrical contact.

[0040] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0041] The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A power connector comprising a base and a crown spring terminal fixed within the base, characterized in that: The base has an upper and lower connected mounting part and a cylindrical body. The crown spring terminal is housed in the cylindrical body. The mounting part has a first surface and a second surface that are arranged opposite to each other in the vertical direction. The cylindrical body protrudes upward from the first surface. The mounting part also has a positioning groove that is recessed downward from the first surface. The power connector also has a plurality of fixing members that are fixed in the positioning groove. The fixing members are arranged around the periphery of the cylindrical body to fix the power connector to an external circuit board.

2. The power connector as described in claim 1, characterized in that: Each of the fasteners has a connector, a plurality of first fixing feet located on the upper side of the connector, and a plurality of second fixing feet located on the lower side of the connector. The second fixing feet are inserted into and fixed in the positioning groove, and the first fixing feet are used to fix to the external circuit board.

3. The power connector as described in claim 2, characterized in that: Each of the aforementioned fasteners and its two adjacent fasteners are arranged at an angle, and the first and second fasteners are both fisheye-shaped.

4. The power connector as described in claim 1, characterized in that: The positioning groove is formed into a rectangular annular groove, and the projection of the cylinder on the horizontal plane is located inside the projection of the positioning groove on the horizontal plane.

5. The power connector as described in claim 1, characterized in that: The crown spring terminal includes a pair of ends arranged opposite each other in the vertical direction and a plurality of spring pieces connecting the pair of ends. The plurality of spring pieces are evenly arranged in the circumferential direction, and the extension direction of each spring piece is not parallel to the axial direction of the crown spring terminal so that it is inclined.

6. The power connector as described in claim 5, characterized in that: Each of the reeds has a first end and a second end disposed opposite to each other in its extension direction, the first end and the second end being completely offset in the vertical direction, and the first end of each reed being at least partially located within the circumferential extension range of the second end of another reed disposed at a time interval of one reed.

7. The power connector as described in claim 2, characterized in that: The power connector also has an insulating cover sleeved on the outside of the cylinder. The insulating cover has at least one pair of snap-fit ​​protrusions protruding in the direction of its axis. The cylinder has a snap-fit ​​groove recessed on its outer wall surface. The snap-fit ​​groove extends continuously along the circumferential direction of the cylinder. The snap-fit ​​protrusions cooperate with the snap-fit ​​groove to fix the insulating cover to the outside of the cylinder.

8. The power connector as described in claim 7, characterized in that: The insulating cover includes an end cover and a circumferential cover perpendicular to the end cover. The circumferential cover has a plurality of protrusions on its inner wall surface. At least one of the protrusions is provided between two adjacent snap-fit ​​protrusions. Each of the protrusions has an inclined guide surface on its side away from the end cover.

9. The power connector as described in claim 7, characterized in that: A gap is formed between the bottom end of the insulating cover and the first surface of the mounting part, and the first fixing foot is located within the gap in the vertical direction.

10. The power connector as claimed in claim 7, characterized in that: The insulating cover includes an end cover and a circumferential cover perpendicular to the end cover. The end cover has several through holes that pass through it in the vertical direction. The through holes and the buckle protrusions are arranged in a one-to-one correspondence and aligned in the vertical direction.

Images