Power supply male end connector

Abstract

The utility model discloses a power supply male end connector, which comprises a plastic main body provided with an annular column body, a slot is formed in the middle of the annular column body, and the inner wall of the slot is provided with a vertically extending mounting groove; the first electrode terminal comprises a first elastic arm and a contact convex hull which is located at one end of the first elastic arm and protrudes upwards, and the contact convex hull extends upwards into the slot; the second electrode terminal comprises a pair of second elastic arms vertically and upwards extending into the mounting groove and an electric contact part which is arranged at the free ends of the second elastic arms and is bent to extend into the slot; and the grounding terminal comprises an annular body, and the annular body is coated on the peripheral surface of the annular cylinder. The utility model has the advantages of high safety, small volume and low manufacturing difficulty.

Description

Technical Field

[0001] The utility model belongs to the technical field of connectors, and particularly relates to a male power connector.

Background Art

[0002] A power connector is an essential electrical component for power transmission, generally including a female end and a male head, and realizing electrical connection through the contact of metal terminals. A power connector generally includes a positive terminal and a negative terminal. In addition to the basic positive and negative terminals, some power connectors are also provided with a grounding terminal to meet higher safety performance requirements.

[0003] In the prior art, patent TWM440557 discloses a power plug, which includes a plastic main body, a conductive terminal and an annular terminal. The plastic main body includes a docking part in the shape of a circular cylinder, and a plug hole is provided at the front of the docking part. The annular terminal is coated on the outer periphery of the docking part, and the elastic contact part of the conductive terminal extends into the plug hole. When plugged into a power socket, the conductive column of the socket is inserted into the plug hole, and the elastic contact part of the conductive terminal at the plug end contacts the outer peripheral surface of the conductive column at the socket end to realize the electrical conduction of one electrode, and the elastic terminal at the socket end contacts the outer peripheral surface of the annular terminal at the plug end to realize the electrical conduction of the other electrode. The structure of its socket-end connector is as disclosed in the prior art CN101207252B, which is an electrical connector. However, this kind of power connector only has a terminal structure design with two electrodes and cannot be applied to the use scenarios with higher safety performance requirements.

[0004] Generally, in order to improve safety, a grounding terminal will be configured on the power connector. However, adding a new terminal will inevitably lead to an increase in the product volume and the difficulty of the manufacturing process. Therefore, it is necessary to provide a new male power connector that can not only ensure its safety requirements, but also ensure the small size of the overall connector and the low manufacturing process difficulty.

Content of the Utility Model

[0005] The main purpose of the utility model is to provide a male power connector with high safety, small size and low manufacturing difficulty.

[0006] The utility model realizes the above purpose through the following technical solutions: A male power connector, which includes:

[0007] A plastic main body having a cylindrical body, a slot is formed in the middle of the cylindrical body, and an installation groove extending vertically is provided on the inner wall of the slot;

[0008] A first electrode terminal, including a first elastic arm and a contact convex bulge protruding upward at one end of the first elastic arm, and the contact convex bulge extends upward into the slot;

[0009] The second electrode terminal includes a pair of second elastic arms that extend vertically upward into the installation groove, and an electrical contact portion that is provided at the free ends of the second elastic arms and bends into the slot.

[0010] The ground terminal includes an annular body that covers the outer peripheral surface of the annular columnar body.

[0011] Furthermore, the plastic body and the ground terminal are integrally formed by injection molding, and the first electrode terminal and the second electrode terminal are inserted and assembled on the plastic body.

[0012] Furthermore, the contact convex hull bulges upward from the upper surface of the first elastic arm to form a conical structure or a cylindrical structure with a spherical top.

[0013] Furthermore, the first elastic arm has a horizontal section and an upturned section with a height higher than that of the horizontal section, and the contact convex hull is provided on the upturned section; a first welding portion is formed at the free end of the horizontal section and extends outside the plastic body.

[0014] Furthermore, a through hole that penetrates downward to the outside is provided at the bottom of the slot, and the contact convex hull penetrates upward through the through hole from the lower surface of the plastic body and extends into the slot.

[0015] Furthermore, the second electrode terminal includes a connecting portion that is connected to the bottom of the second elastic arms and connects the pair of second elastic arms into one body.

[0016] Furthermore, the connecting portion includes a first connecting piece and a second connecting piece that are distributed in parallel, and a third connecting piece that connects the first connecting piece and the second connecting piece at the end. The two second elastic arms are respectively bent upward from the edges of the first connecting piece and the second connecting piece; an avoidance space for avoiding the first electrode terminal is formed between the first connecting piece and the second connecting piece; the length of the first connecting piece is greater than the length of the second connecting piece, and a second welding portion is formed at the free end of the first connecting piece and extends outside the plastic body.

[0017] Furthermore, the installation groove penetrates downward to the lower surface of the plastic body, and a socket is formed at the lower surface of the plastic body. The side of the installation groove facing the slot is an open structure, and the second elastic arms are inserted upward into the installation groove from the socket.

[0018] Further, the plastic body includes a plate body located at the bottom of the annular cylinder, the grounding terminal includes an annular disk portion extending circumferentially outward from the bottom of the annular body, and the annular disk portion is embedded in the plate body; a branch portion extending horizontally outward is provided on the annular disk portion, and a third welding portion is formed at the free end of the branch portion extending out of the plastic body.

[0019] Further, a plurality of riveting posts are provided on the lower surface of the plastic body, a plurality of first positioning holes adapted to the riveting posts are provided on the first elastic arm, a plurality of second positioning holes adapted to the riveting posts are provided on the connecting portion, and after the first electrode terminal and the second electrode terminal are inserted onto the plastic body, a rivet structure is formed by melting the riveting posts to realize the fastening connection with the plastic body.

[0020] Further, a limiting groove for limiting the horizontal position of the upturned section is provided on the lower surface of the plastic body, and the upturned section is embedded in the limiting groove.

[0021] Further, a third positioning hole is provided on the annular disk portion; a positioning avoidance forming hole is provided on the plastic body to facilitate the positioning pin in the forming die to extend into the third positioning hole to position the grounding terminal, and a plurality of pressing avoidance forming holes are also provided to expose a plurality of annularly distributed areas of the annular disk portion so that the pressing blocks in the forming die can press the annular disk portion from the upper and lower sides.

[0022] Compared with the prior art, the beneficial effects of a power male terminal connector of the present utility model are as follows: An annular cylinder is provided on the plastic body, the outer peripheral surface of the annular cylinder is used to form the electrically conductive contact surface of the grounding terminal, the slot formed in the annular cylinder is used in cooperation with the elastic terminals inserted on the inner walls of both sides to form the electrical contact structure of one of the electrode terminals, and a contact convex hull extending axially outward is provided at the center of the slot to constitute the electrical contact structure of the other electrode terminal, forming a power connector including a positive electrode, a negative electrode and a grounding terminal, which has high safety performance, makes full use of the annular cylinder structure of the plastic body, and has a clever layout integrating three electrodes, and the overall volume of the connector is relatively small; both electrode terminals are assembled with the plastic body in an inserted manner, and a fastening connection is realized by hot melting and riveting in the form of hot melting columns, which greatly reduces the manufacturing process difficulty of the connector and reduces the manufacturing cost at the same time.

Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present utility model;

[0024] Figure 2 is an exploded structural diagram of an embodiment of the present utility model;

[0025] Figure 3Schematic cross-sectional structure diagram of an embodiment of the present utility model;

[0026] Figure 4 Schematic structure diagram of the embodiment of the present utility model in an inverted state;

[0027] The numbers in the figure represent:

[0028] 100 - Power male terminal connector;

[0029] 1 - Plastic main body, 11 - Ring column, 12 - Plate body, 13 - Slot, 14 - Perforation, 15 - Mounting groove, 151 - Socket, 16 - Rivet post, 17 - Limit groove, 18 - Positioning avoidance forming hole, 19 - Compression avoidance forming hole;

[0030] 2 - First electrode terminal, 21 - First elastic arm, 211 - Horizontal section, 212 - Upwardly curved section, 213 - First welding part, 214 - First positioning hole, 22 - Contact convex;

[0031] 3 - Second electrode terminal, 31 - Second elastic arm, 32 - Electrical contact part, 33 - Connection part, 331 - First connection piece, 332 - Second connection piece, 333 - Third connection piece, 334 - Avoidance space, 335 - Second welding part, 336 - Second positioning hole;

[0032] 4 - Grounding terminal, 41 - Ring body, 42 - Ring disc part, 421 - Third positioning hole, 43 - Branch part, 431 - Third welding part.

Specific implementation manner

[0033] Embodiment 1:

[0034] Please refer to Figures 1 - 4 , this embodiment is a power male terminal connector 100, which includes a plastic main body 1, a first electrode terminal 2, a second electrode terminal 3, and a grounding terminal 4.

[0035] The plastic main body 1 is an integrally injection - molded structure and has a ring column 11 and a plate body 12 located at the bottom of the ring column 11. A slot 13 for inserting into the power female terminal is formed in the middle of the ring column 11. The slot 13 opens upward and is used for inserting into the power female terminal to achieve electrical conduction. The slot 13 can be set to a circular, square, polygonal or other geometric shape.

[0036] The first electrode terminal 2 is of an integral structure and includes a first elastic arm 21 and a contact convex hull 22 provided at one end of the first elastic arm 21. The contact convex hull 22 protrudes upward from the upper surface of the first elastic arm 21 to form a conical structure with a spherical top. The contact convex hull 22 realizes electrical conduction by contacting the surface of the electrode terminal of the power supply mother terminal through its top end. During contact, the contact convex hull 22 is subjected to an axial pressing force applied by the mother terminal electrode terminal, but under the action of the elastic force provided by the first elastic arm 21 in the opposite direction to the pressing force, it can maintain reliable and effective contact with the mother terminal electrode terminal.

[0037] The first elastic arm 21 has a horizontal section 211 and an upturned section 212 with a height higher than that of the horizontal section 211, and the contact convex hull 22 is provided on the upturned section 212. Through the structural design of the horizontal section 211 and the upturned section 212, the first elastic arm 21 has a strong elastic force surrender ability and maintains an effective elastic deformation function. The free end of the horizontal section 211 extends out of the plastic body 1 to form a first welding part 213.

[0038] A through hole 14 is provided at the bottom of the slot 13 and penetrates downward to the outside. The contact convex hull 22 penetrates upward through the through hole 14 from the lower surface of the plastic body 1 and extends into the slot 13.

[0039] The second electrode terminal 3 is of an integral structure and includes a pair of second elastic arms 31 arranged relatively vertically, an electrical contact part 32 provided at the free end of the second elastic arms 31 and bent to extend into the slot 13, and a connecting part 33 connected to the bottom of the second elastic arms 31 and connecting the pair of second elastic arms 31 into one body. In this embodiment, the electrical contact part 32 is formed by inverting the top end of the second elastic arm 31 inward to form a contact convex point structure protruding into the slot 13; in other embodiments, a bent protrusion protruding into the slot 13 can also be formed in the top section of the second elastic arm 31 to constitute the electrical contact part 32.

[0040] An installation groove 15 is provided on the inner wall surface of the slot 13. The installation groove 15 penetrates downward to the lower surface of the plastic body 1, and a socket 151 is formed at the lower surface of the plastic body 1. The side of the installation groove 15 facing the slot 13 is an open structure. The second elastic arm 31 is inserted upward into the installation groove 15 from the socket 151, and the electrical contact part 32 extends into the slot 13 from the open structure side of the installation groove 15. When inserted into the power supply mother terminal, the corresponding electrode of the power supply mother terminal is inserted into the slot 13, and the corresponding electrode contact conduction is realized through the contact between the electrical contact part 32 and the outer peripheral surface of the mother terminal electrode in the slot 13.

[0041] The connecting portion 33 is horizontally arranged and includes a first connecting piece 331 and a second connecting piece 332 that are distributed in parallel, and a third connecting piece 333 that connects the first connecting piece 331 and the second connecting piece 332 at the end. The two second elastic arms 31 are formed by bending upward from the edges of the first connecting piece 331 and the second connecting piece 332. An escape space 334 for escaping the first electrode terminal 2 is formed between the first connecting piece 331 and the second connecting piece 332. The length of the first connecting piece 331 is greater than that of the second connecting piece 332, and the free end of the first connecting piece 331 extends out of the plastic body 1 to form a second welding portion 335.

[0042] The grounding terminal 4 is an integral structure, and includes an annular body 41 and an annular disk portion 42 extending outward from the bottom circumference of the annular body 41. The grounding terminal 4 and the plastic body 1 are formed into an integral structure by embedded injection molding. The annular body 41 is coated on the outer circumferential surface of the annular cylinder 11, and the annular disk portion 42 is embedded in the plate body 12 of the plastic body 1. When plugged into the female end of the power supply, the contact and conduction of the grounding terminal is achieved by the elastic terminal of the female end of the power supply contacting the outer circumferential surface of the annular body 41. A branch portion 43 extending horizontally outward is provided on the annular disk portion 42, and the free end of the branch portion 43 extends out of the plastic body 1 to form a third welding portion 431.

[0043] In order to improve the connection firmness between the plastic body 1 and the first electrode terminal 2 and the second electrode terminal 3, a plurality of rivet posts 16 are provided on the lower surface of the plastic body 1, a plurality of first positioning holes 214 cooperating with the rivet posts 16 are provided on the horizontal section 211 of the first elastic arm 21, and a plurality of second positioning holes 336 cooperating with the rivet posts 16 are provided on the three connecting pieces of the connecting portion 33. After the first electrode terminal 2 and the second electrode terminal 3 are inserted into the plastic body 1, a rivet structure is formed by hot-melt rivet posts 16 to realize a fastening connection with the plastic body 1.

[0044] In order to prevent the upward section 212 of the first electrode terminal 2 from being horizontally deformed and from contacting and short-circuiting with the connecting portion 33 of the second electrode terminal 3 at the portion exposed on the lower surface of the plastic body 1, a limiting groove 17 is provided on the lower surface of the plastic body 1 to limit the horizontal position of the upward section 212. The upward section 212 is embedded in the limiting groove 17 so that the upward section 212 will not be horizontally deformed and contact the connecting portion 33.

[0045] In order to ensure the accurate and reliable height position and central position of the grounding terminal 4 within the plastic main body 1, and to prevent the annular disc portion 42 from being deformed by impact during the injection molding process, a third positioning hole 421 is provided on the annular disc portion 42, and a positioning avoidance molding hole 18 is provided on the plastic main body 1 to facilitate the positioning pin in the molding die to extend into the third positioning hole 421 for positioning the central position of the grounding terminal 4. Additionally, a number of pressing avoidance molding holes 19 are provided to expose multiple annularly distributed areas of the annular disc portion 42 so that the pressing blocks in the molding die can press the annular disc portion 42 from both the upper and lower sides. Two vertically corresponding pressing avoidance molding holes 19 are defined as a pair. In this embodiment, there are three pairs of pressing avoidance molding holes 19, and the positioning avoidance molding hole 18 and the three pairs of pressing avoidance molding holes 19 are arranged at an angular interval of 90°. The aperture of the positioning avoidance molding hole 18 is larger than that of the third positioning hole 421. The end of the positioning pin in the molding die is a stepped shaft rod structure, and its end extends into the third positioning hole 421 to perform central positioning on the annular disc portion 42, while the larger diameter part presses on the upper surface of the annular disc portion 42, providing support for both the upper and lower surfaces while performing central positioning.

[0046] For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, several modifications and improvements can be made, and all of these fall within the protection scope of the present utility model.

Claims

1. A male power connector, characterized in that: It includes The plastic body has a ring column, a slot is formed in the middle of the ring column, and a vertically extending mounting groove is provided on the inner wall of the slot; A first electrode terminal, comprising a first elastic arm and a contact convex bump protruding upward at one end of the first elastic arm, wherein the contact convex bump extends upward into the slot; The second electrode terminal comprises a pair of second elastic arms extending vertically upward into the mounting slot, and an electrical contact portion disposed at the free end of the second elastic arms and bent and extending into the slot; The ground terminal comprises an annular body, wherein the annular body is covered on the outer peripheral surface of the annular column.

2. The power male connector according to claim 1, characterized in that: The plastic body and the ground terminal are an integral structure formed by injection molding, and the first electrode terminal and the second electrode terminal are plug-assembled on the plastic body.

3. The power male terminal connector according to claim 1, characterized in that: The contact convex bulge rises upward from the upper surface of the first elastic arm to form a conical structure or a cylindrical structure with a spherical top.

4. The power male connector according to claim 1, characterized in that: The first elastic arm has a horizontal section and an upward section with a height higher than the horizontal section, and the contact convex bump is arranged on the upward section; the free end of the horizontal section extends out of the plastic body to form a first welding portion.

5. The power male connector according to claim 1, characterized in that: The bottom of the slot is provided with a through hole penetrating downward to the outside, and the contact convex bump extends upward from the lower surface of the plastic body through the through hole into the slot.

6. The power male connector according to claim 1, characterized in that: The second electrode terminal includes a connecting portion connected to the bottom of the second elastic arm and connecting the pair of second elastic arms into one body.

7. The power male terminal connector according to claim 6, wherein: The connecting portion includes a first connecting piece and a second connecting piece that are distributed in parallel, and a third connecting piece that connects the first connecting piece and the second connecting piece at the end, and the two second elastic arms are formed by bending upward from the edges of the first connecting piece and the second connecting piece respectively; An escape space for escaping the first electrode terminal is formed between the first connecting piece and the second connecting piece; the length of the first connecting piece is greater than that of the second connecting piece, and the free end of the first connecting piece extends out of the plastic body to form a second welding portion.

8. The power male connector according to claim 1, wherein: The installation groove penetrates downward to the lower surface of the plastic body, and a socket is formed on the lower surface of the plastic body. The side of the installation groove facing the slot is an open structure, and the second elastic arm is inserted upward from the socket into the installation groove.

9. The power male connector according to claim 1, characterized in that: The plastic body includes a plate body located at the bottom of the annular cylinder, and the grounding terminal includes an annular disk portion extending outward from the circumference of the bottom of the annular body, and the annular disk portion is embedded in the plate body; a branch portion extending horizontally outward is arranged on the annular disk portion, and a free end of the branch portion extends out of the plastic body to form a third welding portion.

10. The power male terminal connector according to claim 6, wherein: A plurality of rivet posts are arranged on the lower surface of the plastic body, a plurality of first positioning holes cooperating with the rivet posts are arranged on the first elastic arm, a plurality of second positioning holes cooperating with the rivet posts are arranged on the connecting portion, and the first electrode terminal and the second electrode terminal are fastened to the plastic body by hot-melting the rivet posts to form a rivet structure after being inserted into the plastic body.

11. The power male terminal connector according to claim 4, wherein: A limiting groove for limiting the horizontal position of the upturned section is provided on the lower surface of the plastic main body, and the upturned section is embedded in the limiting groove.

12. The power male terminal connector according to claim 9, wherein: A third positioning hole is provided on the circular ring disc portion; a positioning avoidance forming hole is provided on the plastic main body to facilitate the positioning pin in the forming die to extend into the third positioning hole to position the grounding terminal, and a plurality of regions annularly distributed exposing the circular ring disc portion are also provided so that the pressing blocks in the forming die can press the circular ring disc portion from both the upper and lower sides through a plurality of pressing avoidance forming holes.

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