TW202137641A - Electrical connector and making method of the same - Google Patents

Abstract

An electrical connector, comprising: a first insulative body defined with a first direction and a second direction perpendicular to each other; the first insulative body includes a first mating portion in front of the first direction and a receiving portion behind in the first direction; a first terminal fixed in the first insulative body includes a first contact portion located in the first mating portion and a first leg located in the receiving portion; a second insulative body is fixed to the outside of the first insulative body ; a second terminal fixed in the second insulative body. The second insulative body includes a second mating portion extending along the second direction, the second terminal includes a second contact portion located at the second mating portion and a second leg extending toward the first insulative body and located in the receiving portion. The structure of two mating portions perpendicular to each other is stable, and the production of the structure is efficient.

Description

Electric connector and manufacturing method thereof

The invention relates to an electrical connector.

Chinese Utility Model Patent No. CN209730378U discloses a power connector, which includes: a charging base, a discharging plug, and a charging plug; A second inner cavity on both sides of an inner cavity, a charging female terminal arranged in the second inner cavity, and a discharging plug includes: a body, a signal pin arranged on the top surface of the body corresponding to the distribution of the spring pins, and a signal pin arranged on the top of the body Discharge terminals on both sides of the spring pins, power pins arranged on the side of the body, the part of the power pins buried in the body is in electrical contact with the part of the discharge terminals buried in the body, and the charging plug includes: a housing, The charging male terminal at one end of the housing. The charging and discharging connector has both a charging function and a discharging function, and the discharging plug has a smaller volume through an optimized structure design. In addition, the above-mentioned charging socket for charging and discharging connection has spring pins, which are beneficial to provide buffering during insertion and avoid damage. The plurality of plug-in surfaces of the electrical connector are all protruding forward, and when the plurality of plugs are inserted, due to the limitation of the volume between the plugs, it is very likely that they will interfere with each other and cannot be inserted.

Therefore, it is necessary to provide an improved electrical connector to solve the above problems.

The purpose of the present invention is to provide an electrical connector with two pairs of interfaces perpendicular to each other.

In order to achieve the above objective, the present invention can adopt the following technical solutions:

An electrical connector, comprising: a first insulating body defined with a first direction and a second direction perpendicular to each other, the first insulating body including a first butting portion located in front of the first direction and The receiving portion at the rear of the first direction; the first terminal is fixed to the first insulating body, and the first terminal includes a first contact portion located in the first mating portion and a first contact portion located in the receiving portion Feet; a second insulating body, which is fixed to the outside of the first insulating body; and a second terminal, which is fixed to the second insulating body; wherein, the second insulating body includes an extending along the second direction The second mating part, the second terminal includes a second contact part located at the second mating part and a second pin extending to the first insulating body and also located at the receiving part.

In order to achieve the above objective, the present invention may also adopt the following technical solutions:

A manufacturing method of an electrical connector, which includes the following steps:

(1) Provide a second insulating body, the second insulating body holds a second terminal; the second insulating body includes a second mating portion, and the second terminal includes a second contact located at the second mating portion Portion and a second pin, the second contact portion extends along a second direction;

(2) Provide a plurality of first terminals, the first terminals include a first contact portion and a first pin, and the first terminal and the second insulating body are placed at a predetermined position, wherein the first contact portion Extend in a first direction, the first pin and the second pin extend in the same direction, and the second direction is perpendicular to the first direction;

(3) Perform insulating material injection molding on the first terminal and the second insulating body to form a first insulating body. The first insulating body includes a first mating portion and a receiving portion extending in a first direction. A contact portion is located in the first mating portion, and the first and second pins are located in the receiving portion.

Compared with the conventional technology, the present invention has the following effects: the electrical connector has two mutually perpendicular mating surfaces, and two injection molding, which has the advantages of high production efficiency, stable quality and high production yield.

In order to facilitate a better understanding of the purpose, structure, features, and effects of the present invention, the present invention will now be further described with reference to the accompanying drawings and specific embodiments.

Referring to the first to third figures, the present invention discloses an electrical connector 100, which defines a first direction X (front and rear direction), a second direction Y (up and down direction) and a third direction Z (left and right direction) which are perpendicular to each other. , Two butt joints can be inserted along the first direction X and the second direction Y.

Referring to the first to third figures, the electrical connector 100 includes a first insulating body 1, a first terminal 4 and an insulator 3 fixed in the first insulating body, the first insulating body 1, a first terminal 4 and The insulator 3 constitutes an output terminal, which can be connected in the front and rear direction X to output power and signals; the electrical connector 100 includes a second insulating body 2 and a second terminal 5 at the same time, and the second insulating body 2 and the second terminal 5 constitute an input terminal. It can be docked along the up and down direction Y to input power and signal. The first and second terminals are connected through a circuit board (not shown) to realize electrical transmission between the two.

As shown in Figures 4 to 6, the first insulating body 1 includes a base 13, a first mating part 11 located forward in the first direction X, and a receiving part 12 located rearward in the first direction. The first mating part 11 is used as a reason The receiving cavity 110 is surrounded by a ring wall, and the receiving portion 12 is a cavity structure surrounded by the ring wall. Specifically, the first insulating body 1 includes two ring walls 110 extending along the first direction X, the two ring walls 110 are spaced apart from each other laterally (third direction Z), and each ring wall 110 penetrates forwards, and the receiving portion 12 is used as a The accommodating cavity 120 is surrounded by a square ring wall.

The first terminal 4 is a needle-like structure, and includes a first contact portion 401 located in the first mating portion 11 and a first pin 403 located in the receiving portion 12. The inner side of each ring wall 110 contains a set of first terminals 4 First contact 401. In this embodiment, each group of first terminals 4 includes four, which are divided into a power terminal 4P with a larger diameter and a signal terminal 4S with a smaller diameter. The power terminal 4P transmits a larger current, and the signal terminal 4S transmits a smaller current. The terminals are divided into two rows and two columns, and the terminals of the same type are distributed diagonally. The diameter of the first contact portion 401 of each first terminal is slightly larger than the first pin 403 thereof, and the first pins 403 of all the first terminals are accommodated in the accommodating cavity 120. The first terminal 4 includes a first fixing portion 402 connecting the first contact portion and the first pin, and the first fixing portion 402 includes a circular sawtooth structure.

Continuing to refer to FIGS. 6 to 9, the second insulating body 2 is fixed on the outside of the first insulating body 1, and the first insulating body 1 and the second insulating body 2 are formed by plastic injection molding one of them to the other insulating body. In this embodiment, the first insulating body 1 is injection-molded to the second insulating body 2, and the first insulating body forms a base 13 for fixing the second insulating body and a mounting groove 130 to strengthen the overall strength of the electrical connector. The second insulating body 2 includes a second mating portion 21 extending along the second direction Y, and the second mating portion is a flat plate structure. Viewed from the second direction Y, the flat plate of the second mating portion 21 includes a first straight line segment 211, an oblique line segment 212, and a second straight line segment 213 that are connected in sequence; the second mating portion 21 also includes an extension from the oblique line segment 212出的Attachment 214. The second mating portion 21 with fool-proof properties can prevent incorrect mating between electrical connectors.

The second insulating body 2 includes a connecting part 22 and an interference part 23 located below the second mating part 21, and the second mating part 21 extends from the connecting part 22 in the second direction Y. The connecting portion 22 includes a circular support portion 221 and a terminal receiving portion 222 surrounding a terminal groove for receiving the second terminal flat plate portion 51. The connecting portion 22 as a whole enters the first insulating body 1 for a certain distance along the second direction Y, and the tenth The first picture and the twelfth picture are clearly visible. The interference part 23 is fixed in the first insulating body 1 due to injection molding. The interference part 23 includes a pair of L-shaped hooks 231 and an insulating block 232 located in the middle of the hooks. The insulating block 232 is provided with a through hole penetrating in the first direction. Slot 233, as shown in the ninth figure; the first insulator 1 is injection-molded on the second insulating body 2, so as to fill the space around the hook 231 and the through slot 233 to realize the base 13 and the interference part of the first insulating body 1 The full cooperation of 23 strengthens the connection strength between the two.

The second terminal 5 is installed in the second insulating body 2 and fixed in the first insulating body 1 at the same time. The second terminal includes a second contact portion 501 located at the second mating portion 21 and a second pin 503 extending toward the first insulating body 1 and also located in the receiving cavity 120. The second contact portion 501 is a flat plate portion 51 perpendicular to the second mating portion 21. At least one second contact portion 501 is provided on both sides of the plate of the second mating portion 21, and the second contact portions on both sides are perpendicular to the plate 21 and aligned with each other in a direction perpendicular to the plate. One side of the second contact portion 501 on both sides is buried in the flat plate, and the two second contact portions are arranged in a large and one small shape. The two side surfaces of the plate 21 are respectively provided with two second contact portions 501, and the second contact portions on the same side of the plate are arranged in a larger and smaller shape. Specifically, four second terminals 5 are fixed in the second insulating body 2, which are divided into two power terminals 5P of the larger plate portion 51 and two signal terminals 5S of the smaller plate portion 51. The power terminals 5P transmit larger currents and signal The terminal 5S transmits a small current. One power terminal 5P and signal terminal 5S are arranged on both sides of the first straight section 211, and the remaining power terminal 5P and signal terminal 5S are arranged on both sides of the second straight section 213. The plate 21 is arranged on the same side surface as a power terminal 5P and a signal terminal 5S. The additional section 214 is located between the two second contact portions 501 on the same side surface of the plate 21 and is parallel to the second contact portions.

In this embodiment, the second docking portion 21 and the flat-shaped four second terminals 5 constitute the input terminal, which can input power and signals, and the first docking portion 11 and the needle-shaped eight first terminals 4 constitute the output terminal, which can output power and Signal. Each second power terminal 5P is connected to a first power terminal 4P in each first mating portion 11 through a circuit board (not shown), that is, a second power terminal 5P is connected to two first power terminals in different receiving cavities 110. The power supply terminal 4P, so the two second power supply terminals 5P and the four first power supply terminals 4P in the two accommodating cavities form just two sets of power transmission. Similarly, each second signal terminal 5S is connected to a first signal terminal 4S in each first mating portion 11 through a circuit board (not shown), that is, a second signal terminal 5S is connected to two different receiving chambers 110. The first signal terminal 4S, so the two second signal terminals 5S cooperate with the four first signal terminals 4S in the two receiving cavities to form two sets of signal transmission. In this way, the input and output of power and signal are realized.

In this embodiment, the side of each second terminal close to the plate 21 is provided with a step portion 510 embedded in the plate, and the side of each terminal away from the plate 21 is provided with a barbed structure 511. The flat plate portion 51 includes a contact portion 501 fixed on both sides of the second mating portion 21 and a flat plate structure fixed in the terminal receiving portion 222. The second contact portions 501 on both sides of the same straight section of the first mating portion 21 are aligned with each other in a direction perpendicular to the flat plate, and the second pins 503 are staggered with each other. The second fixing portion 502 connects the flat portion 51 and the second pin 503 and is fixed in the first insulating body 1. The second pin 503 is formed by bending the second fixing portion 502 once or twice, so that the same The second pins 503 of the second terminals on both sides of the straight line 211/213 are staggered in the first direction X. The pins 403 and 503 of all the first and second terminals are arranged in parallel in the receiving cavity 120, and the first pins 403 are arranged on both sides of the second pin 503.

The insulator 3 is injection-molded into the first insulating body 1. The insulator 3 includes a butting ring 31 that covers the inner wall of the first butting portion 21, and the butting ring does not go beyond the front of the first contact portion 401 of the first terminal. , Abutting against the rear wall of the receiving cavity 120 backwards. The insulator 3 includes a vertical block 32 located behind the butting ring 31 and melted into the first insulating body 1, as shown in the tenth to twelfth figures. Two symmetrical vertical blocks extend behind each butting ring 31. The insulator 3 includes two butting rings 31 in the ring wall and a connecting bar 33 connecting the butting rings. The connecting bar is located in the first insulating body. The insulator 3 includes a pair of vertical blocks 32 located behind the butting ring, and a connecting bar 33 connects the bottoms of the two vertical blocks located in the middle position.

The docking ring 31 of the present invention can strengthen the strength of the ring wall surrounding the first docking portion 11, and at the same time enhance the plugging force; the vertical portion 32 and the connecting strip 33 are melted into the base portion 13 by injection molding to be fixed in the first insulating body , It can be ensured that the butting ring 31 will not be separated from the first insulating body 1 during the plug-in test.

The manufacturing method of the electrical connector 100 specifically includes the following steps:

(1) A second insulating body 2 is provided, and a second terminal 5 is fixedly held on the second insulating body; the second insulating body includes a second mating portion 21, and the second terminal 5 includes a second mating portion The second contact portion 501 and the second pin 503 of the second contact portion extend along the second direction Y;

(2) Provide a plurality of first terminals 4, the first terminals including a first contact portion 401 and a first pin 403, the first terminal 4 and the second insulating body 2 are placed in a predetermined position (forming mold Inside), wherein the first contact portion 401 extends in a first direction, the first pin 403 and the second pin 503 extend in the same direction, and the second direction Y is perpendicular to the first direction X;

(3) Insulating material injection molding is performed on the first terminal 4 and the second insulating body 2 to form a first insulating body 1. The first insulating body 1 includes a first mating portion 11 extending in a first direction and a receiving portion 11 Part 12, the first contact part 401 is located in the first mating part 11, the first and second pins 403, 503 are located in the receiving part 12; the single second terminal 5 is directly implanted and molded In the mold, the terminal will be skewed due to structural problems, and there is a risk that the molding mold cannot be closed and scraped. Insert the second terminal 5 into the second insulating body 2 and then implant the mold as an integral insert. This problem can be circumvented;

(4) The insulator 3 is formed by injection molding of insulating material in the first insulating body 1 again, and the insulator 3 is attached to the inner wall of the first mating portion 11.

The first and second insulating bodies and the insulators are all formed by injection molding of insulating materials, and the first terminal and the second terminal are formed by stamping of metal materials. The first insulating body 1 performs the first injection molding of the second insulating body 2 and the terminal 5 as a whole, and the insulator 3 is injection molded for the second time in the first insulating body 1. The two injection molding has high production efficiency, stable quality and Advantages of high production yield.

In summary, the present invention meets the requirements of an invention patent, and Yan filed a patent application in accordance with the law. However, the foregoing descriptions are only preferred embodiments of the present invention, and the scope of the present invention is not limited to the foregoing embodiments. Anyone who is familiar with the art of the present case makes equivalent modifications or changes in accordance with the spirit of the present invention. Should be covered in the scope of the following patent applications.

100: Electrical connector 222: Terminal receiving part X: First direction 23: Interference part Y: second direction 231: hook Z: Third direction 232: Insulating block 1: the first insulating body 233: interference groove 11: First docking part 3: Insulator 110: containment chamber 31: butt ring 12: Receptacle 32: Vertical block 120: accommodating cavity 33: connecting strip 13: Base 4, 4P, 4S: First terminal 130: installation groove 401: first contact part 2: The second insulating body 402: the first fixing part 21: Second docking part 403: First pin 211: The first straight segment 5, 5P, 5S: the second terminal 212: Diagonal line 51: Flat part 213: Second straight line segment 501: Second contact part 214: Additional section 502: Second fixed part 22: connecting part 503: second pin 221: Support

The first figure is a perspective view of the electrical connector of the present invention; The second figure is a three-dimensional view of the electrical connector shown in the first figure from different angles; The third figure is a three-dimensional view of the electrical connector shown in the second figure from different angles; The fourth figure is an exploded view of the partial structure of the electrical connector shown in the first figure; Figure 5 is an exploded view from another angle as shown in Figure 4; The sixth figure is an exploded view of the entire structure of the electrical connector shown in the first figure; Figure 7 is a perspective view of the second insulator and the second terminal in the electrical connector shown in Figure 6; The eighth figure is an exploded view from another angle as shown in the sixth figure; Figure 9 is a perspective view of the second insulator and the second terminal in the electrical connector shown in Figure 8; The tenth figure is a cross-sectional view of the electrical connector shown in the first figure along the dashed line X-X; Figure 11 is a cross-sectional view of the electrical connector shown in Figure 1 along the dashed line XI-XI; and Figure 12 is a cross-sectional view of the electrical connector shown in Figure 3 along the direction of the broken line XII-XII.

100: electrical connector

1: The first insulating body

X: first direction

2: The second insulating body

Y: second direction

3: Insulator

Z: Third party

4: The first terminal

5: The second terminal

Claims (10)

An electrical connector, which includes: The first insulating body is defined with a first direction and a second direction perpendicular to each other, and the first insulating body includes a first mating portion located in front of the first direction and a receiving portion located behind in the first direction; The first terminal is fixed to the first insulating body, and the first terminal includes a first contact portion located at the first mating portion and a first pin located at the receiving portion; The second insulating body is fixed on the outside of the first insulating body; and The second terminal is fixed to the second insulating body; Wherein, the second insulating body includes a second mating portion extending along the second direction, and the second terminal includes a second contact portion located at the second mating portion and extending toward the first insulating body. The second pin is also located in the receiving part. The electrical connector according to claim 1, wherein the first mating part is a receiving cavity surrounded by a ring wall, the first contact part is a needle-shaped structure; the second mating part is a flat plate structure, The second contact portion is a flat plate portion perpendicular to the docking plate structure; the receiving portion is a cavity structure surrounded by a ring wall. The electrical connector according to claim 2, wherein the first insulating body and the second insulating body are formed by plastic injection molding one of them to the other insulating body. The electrical connector according to claim 1, wherein the first insulating body further defines a third direction perpendicular to the first and second directions, and the first insulating body includes two two extending along the first direction. A ring wall, the two ring walls are spaced apart from each other in a third direction, and a set of first contact portions of the first terminal are contained inside each ring wall. The electrical connector according to claim 1, wherein the second mating portion is a flat plate extending in a second direction, at least one second contact portion is provided on both sides of the flat plate, and the first contact portion on both sides The two contact parts are perpendicular to the plate and aligned with each other in a direction perpendicular to the plate. The electrical connector according to claim 5, wherein one side of the second contact portion on both sides is buried in the flat plate, and the two second contact portions are arranged in a large and a small configuration. The electrical connector according to claim 6, wherein the two side surfaces of the flat plate are respectively provided with the two second contact parts, and the second contact parts on the same side of the flat plate are arranged in a larger and smaller shape. The electrical connector according to claim 7, wherein viewed from the first direction, the flat plate of the second mating portion includes a straight line segment, an oblique line segment, and a straight line segment connected in sequence, and the second contact portion is located on the straight line. Both sides of the segment; the second mating portion further includes an additional segment extending from the oblique line segment, and the additional segment and the second contact portion of the second terminal are parallel to each other. A manufacturing method of an electrical connector, which includes the following steps: (1) Provide a second insulating body, the second insulating body holds a second terminal; the second insulating body includes a second mating portion, and the second terminal includes a second contact located at the second mating portion Portion and a second pin, the second contact portion extends along a second direction; (2) Provide a plurality of first terminals, the first terminals include a first contact portion and a first pin, and the first terminal and the second insulating body are placed at a predetermined position, wherein the first contact portion Extend in a first direction, the first pin and the second pin extend in the same direction, and the second direction is perpendicular to the first direction; (3) Perform insulating material injection molding on the first terminal and the second insulating body to form a first insulating body. The first insulating body includes a first mating portion and a receiving portion extending along a first direction. A contact portion is located in the first mating portion, and the first and second pins are located in the receiving portion. The method for manufacturing an electrical connector according to claim 9, wherein an insulating material is injection-molded again in the first insulating body to form an insulator, and the insulator is attached to the inner wall of the first butting portion.

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