CN107369968A - Electric connector and its manufacture method - Google Patents

Abstract

The invention relates to an electrical connector and a manufacturing method thereof, which includes a ceramic support body, a conductive terminal and a metal shell. The support body includes a main body and two arms extending forward from the main body. The two arms are left and right Spaced apart, each arm is provided with a locking groove and a convex portion in front of the locking groove, the metal shell is provided with an insertion hole, and the conductive terminal has a contact portion exposed to the insertion hole and a Extended connecting feet, the electrical connector also includes a first insulator injection-molded on the support body, the first insulator has a butt plate located between the two arm parts, and the contact parts are arranged on the butt plate On the upper and lower surfaces, the butt plate and the arm form a tongue plate, the tongue plate is located in the insertion hole, and the tongue plate has high hardness and good toughness at the same time, so as to avoid fracture.

Description

Electrical connector and manufacturing method thereof

technical field

The invention relates to an electrical connector and a manufacturing method thereof, in particular to an electrical connector using ceramic materials and a manufacturing method thereof.

Background technique

With the rapid development of science and technology in the electronics industry, the size of electronic products is becoming more and more thinner and shorter, which requires the components of electronic products to be smaller and smaller, and connectors are the first to bear the brunt. As the size of the new generation of electrical connectors is required to be smaller, this leads to better mechanical performance requirements and more difficult product design. In order to face thinner and thinner equipment and ensure the reliability of product structure, major manufacturers have launched corresponding structural designs.

For the prior art related to this case, you can refer to an electrical connector disclosed in Utility Model Patent Announcement No. CN205944560U, which includes a ceramic support body, a terminal module, and a metal shell. The support body includes a main body and protrudes forward from the main body. There are grooves on the upper and lower surfaces of the tongue plate, and there are two terminal modules. Each terminal module includes a row of conductive terminals and an insulating block injection-molded on the conductive terminals. The conductive terminals have forward protrusions. The contact parts of the insulating block are accommodated in the corresponding grooves one by one. Although the ceramic has high hardness and wear resistance, which can improve the service life, but because the tongue plate is made of ceramic as a whole, the ceramic has poor toughness and is easy to break, especially in When the user inserts obliquely, the tongue plate is easily broken after being pressed by the butt connector, which affects the application function and service life of the electrical connector.

Therefore, it is necessary to design a new electrical connector to solve the above technical problems.

Contents of the invention

The object of the present invention is to provide an electrical connector capable of preventing breakage of the tongue plate and a manufacturing method thereof.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: an electrical connector, which includes a ceramic support body, a conductive terminal and a metal shell, the support body includes a main body and two arm parts extending forward from the main body, the The two arms are separated left and right, each arm is provided with a lock groove and a protrusion in front of the lock groove, the metal shell is provided with a plug hole, and the conductive terminal has a hole exposed to the plug. The contact portion of the hole and the extended connecting pin, the electrical connector also includes a first insulator injection molded on the support body, the first insulator has a butt plate located between the two arm portions, the contact portion row The cloth is arranged on the upper and lower surfaces of the butt plate, and the butt plate and the arm form a tongue plate, and the tongue plate is located in the insertion hole.

The present invention also adopts the following technical solution: a method for manufacturing an electrical connector, which includes the following steps:

A support body sintered by ceramic material is provided, the support body includes a main body and two arms extending forward from the main body, the two arms are spaced apart left and right, each arm is provided with a locking groove and a protrusion located in front of the lock groove;

A first insulator is provided, the first insulator is injection-molded on the support body, the first insulator is provided with a butt plate located between the two arms, and the butt plate and the arms form a tongue plate;

providing a conductive terminal, the conductive terminal includes a contact portion arranged on the upper and lower surfaces of the docking plate and an extended connecting foot;

A metal shell is provided, the metal shell is provided with an insertion hole, the tongue plate is located in the insertion hole, and the contact portion is exposed to the insertion hole.

The arm of the tongue plate of the electrical connector of the present invention is made of ceramic material, which improves the hardness and wear resistance of the tongue plate, reduces the degree of scratching and wear of the tongue plate by the locking piece of the plug connector, and the butt plate of the tongue plate is made of plastic material. The material has good toughness, improves the toughness of the tongue plate, avoids fracture, and ensures the application function and service life of the electrical connector.

Description of drawings

FIG. 1 is a schematic perspective view of an electrical connector according to Embodiment 1 of the present invention.

FIG. 2 is a schematic perspective view of the electrical connector according to Embodiment 1 of the present invention from another angle.

FIG. 3 is an exploded perspective view of the electrical connector according to Embodiment 1 of the present invention.

FIG. 4 is a schematic perspective view of the joint between the supporting body and the first insulator of the electrical connector according to Embodiment 1 of the present invention.

Fig. 5 is a sectional view along the direction A-A of Fig. 4 .

FIG. 6 is an exploded perspective view of the supporting body shown in FIG. 4 separated from the first insulator.

7 is a three-dimensional schematic view of the combination of the supporting body and the plastic part of the electrical connector according to Embodiment 2 of the present invention.

Fig. 8 is a cross-sectional view along B-B direction of Fig. 7 .

FIG. 9 is an exploded perspective view of the supporting body and the plastic parts in FIG. 7 .

detailed description

Implementation mode 1:

Referring to Figures 1 to 6, the first embodiment of the electrical connector 100 of the present invention is used to be installed on the motherboard for plugging of a plug connector (not shown), and the plug connector is provided with a metal locking piece , the electrical connector 100 includes a ceramic support body 10 sintered from ceramic material, a first insulator 21 , a second insulator 22 , two sets of conductive terminals 30 and a metal shell 40 .

The support body 10 includes a main body 11, two arm parts 12 extending forward from the main body 11 and spaced left and right, and a cross arm 13 connecting at least one front end of the arm part 12. In this embodiment, the cross arm 13 is connected to A front receiving space 14 is formed between the pair of arm parts 12 , and between the two arm parts 12 and the cross arm 13 . The main body part 11 is provided with a rear receiving space 15 passing through from front to back. The outer surfaces of the two arms 12 are provided with locking grooves 121 and protrusions 122 located in front of the locking grooves 121. The locking grooves 121 are used to cooperate with the locking pieces of the plug connector, and connect the plug connector to the electrical connector. The connectors 100 lock together.

The first insulator 21 is injection molded on the support body 10, and it includes a base 23 and a butt plate 24 protruding forward from the base 23. The butt plate 24 is located in the front receiving space 14, and the butt plate 24 is connected to the arm 12 and the cross arm 13. Combined together, the three together form a tongue plate, and the base 23 is located in the rear accommodation space 15. In this embodiment, the first insulator 21 can be understood as a butt plate 24 and a plastic part 28, that is, the plastic part 28 is located on the butt plate 24 Therefore, the butt plate 24 and the plastic part 28 are integrally formed by injection molding, and the plastic part 28 and the cross arm 13 are integrally formed, and the surrounding surfaces of the cross arm 13 are covered by the plastic part 28. The upper and lower surfaces of the butt plate 24 are respectively recessed with a plurality of receiving grooves 241 spaced apart left and right, and the base 23 is provided with fixing grooves 231 passing through the base 23 front and rear, communicating with the receiving grooves 241 one by one.

The second insulator 22 is injection molded on the conductive terminal 30 to define the terminal module 220. The terminal module 220 is assembled forwardly on the support body 10 and the first insulator 21. The front end of the second insulator 22 is located in the rear accommodation space 15, and the rear The end protrudes backward from the support body 10 . Of course, in other embodiments, the conductive terminal 30 is fixed on the second insulator 22 in an assembled manner.

The conductive terminal 30 includes a contact portion 31 extending forward from the second insulator 22 and a connecting pin 32 extending from the lower surface of the second insulator 22. The contact portion 31 of the conductive terminal 30 is inserted forward into the fixing groove 231 of the first insulator 21 and accommodated therein. Inside the groove 241. The conductive terminals 30 are arranged in two groups, wherein the contact portion 31 of one group of conductive terminals 30 is located on the upper surface of the butt plate 24, and the connecting pins 32 are horizontal pieces arranged in a row along the left and right directions for welding on the upper surface of the motherboard. On the surface, the contact portion 31 of another group of conductive terminals 30 is located on the lower surface of the docking plate 24, and the connecting pins 32 are vertical sheets arranged in two rows along the left and right directions, and are located on the connecting pins of the one group of conductive terminals 30. 32, used for welding in the main board welding hole.

The supporting body 10 is assembled forwardly in the metal casing 40 . The metal casing 40 is a two-piece structure, including an inner casing 41 and an outer casing 42 sleeved outside the inner casing 41 , providing a double-layer shielding function.

The inner housing 41 is provided with a socket hole 45 for plugging in a plug connector. The butt plate 24, the arm portion 12 and the cross arm 13 of the support body 10 form a tongue plate located in the socket hole 45, and the conductive terminal 30 is exposed to the The insertion hole 40 is used to contact the plug connector. Because ceramics have strong wear resistance, even long-term plugging and unplugging wear is relatively small, and it is also beneficial to improve the service life of the entire electrical connector, so that there is no need to set metal In the case of the spacer, the combination stability of the electrical connector 100 of the present invention and the plug connector can also be realized.

The left and right sides of the outer casing 42 are provided with downwardly bent fixing feet 46 for fixing the electrical connector 100 on the motherboard.

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

Provide a support body 10, which is sintered from a ceramic material;

providing a first insulator 10, which is injection molded on the support body 10;

Provide a conductive terminal 20 and a second insulator 22, the second insulator 22 is injection molded or assembled on the conductive terminal 20 to define a terminal module 220;

The terminal module 220 is assembled forwardly on the support body 10 and the first insulator 21;

A metal shell 40 is provided, and the metal shell 40 is assembled on the support body 10 .

The tongue plate of the electrical connector 100 of the present invention includes the arm portion 12 of the support body 10 and the butt plate 24 of the first insulator 21. The arm portion 12 is made of ceramic material, which improves the hardness and wear resistance of the tongue plate and reduces the lock of the plug connector. The degree of scratching and wear of the blade against the tongue plate, the butt plate 24 is made of plastic material, which improves the toughness of the tongue plate, avoids fracture, and ensures the application function and service life of the electrical connector 100 .

Implementation mode 2:

Please refer to FIG. 7 to FIG. 9, which is the second embodiment of the electrical connector 100 of the present invention, and the support body 50 is the same as the first embodiment, except that the butt plate 24 and the plastic part 60 of this embodiment are Set separately, the plastic part 60 is a single component, and the plastic part 60 is integrally formed on the cross arm 53 of the support body 50. The cross arm 53 is arranged in a square bar shape, including a front surface 531, a rear surface 532, and an upper surface connected to each other. The surface 533 and the lower surface 534, the arm portion 52 protrudes forward from the front surface 531, the rear surface 532 is located in the front receiving space 54, the upper surface 533 is lower than the upper surface 523 of the arm portion 52, and the lower surface 534 is higher than the arm portion 52 The lower surface 522 of.

The plastic part 60 covers the front surface 531 , the rear surface 532 , the upper surface 533 and the lower surface 534 of the cross arm 53 , the front surface of the plastic part 60 and the arm part 52 tends to be coplanar, and the rear surface 532 is located in the front receiving space 54 , the left and right ends of the plastic part 60 are combined with the arm portion 52 , and the rear end is combined with the butt plate 24 , located in front of the contact portion 31 of the conductive terminal 30 .

When the electrical connector 100 of the present invention is docked with the plug connector, since the plastic part 60 has good toughness, the plug connector directly offsets the plastic part 60, even if the plug connector is abnormally inserted obliquely, the plastic part 60 will not break , while preventing the supporting body 50 from breaking, ensuring the application function of the electrical connector 100 and prolonging the service life. At the same time, since the plastic part 60 is flexible, it is easy to control the size of the plastic part 60 when the plastic part 60 is integrally formed.

Although preferred embodiments of the present invention have been disclosed for illustrative purposes, those of ordinary skill in the art will appreciate that various Improvements, additions, and substitutions are possible.

Claims (10)

1. An electrical connector, which includes a ceramic support body, a conductive terminal and a metal shell, the support body includes a main body and two arm portions extending forward from the main body portion, the two arm portions are spaced apart left and right, each The outer surface of the arm is provided with a locking groove and a protrusion located in front of the locking groove, the metal shell is provided with an insertion hole, and the conductive terminal has a contact portion exposed to the insertion hole and an extended connecting foot. It is characterized in that: the electrical connector also includes a first insulator integrally injection-molded on the support body, the first insulator has a butt plate located between the two arm parts, and the contact parts are arranged on the butt plate On the upper and lower surfaces, the butt plate and the arm constitute a tongue plate, and the tongue plate is located in the insertion hole. 2. The electrical connector according to claim 1, characterized in that: the electrical connector further comprises a second insulator assembled forwardly on the support body or the first insulator, and the conductive terminal is held on the second insulator , the contact portion extends forward out of the second insulator. 3. The electrical connector according to claim 2, characterized in that: the upper and lower surfaces of the butt plate are respectively provided with a plurality of receiving grooves spaced apart left and right, the first insulator includes a base connected to the rear end of the butt plate, The base is provided with a fixing groove that runs through the base from front to back, the fixing groove communicates with the receiving groove one by one, the contact part is inserted into the receiving groove through the fixing groove, and the support body is provided with a front receiving space and a The front accommodating space runs through the rear accommodating space of the main body backward, the butt plate is located in the front accommodating space, the front end of the second insulator is assembled in the rear accommodating space, and the rear end protrudes from the supporting body. 4 . The electrical connector according to claim 1 , wherein the supporting body is provided with a cross arm connecting at least one front end of the arm, and the first insulator covers the front surface of the cross arm. 5. The electrical connector according to claim 1, wherein the support body includes a cross arm connected to the arm, the cross arm is located in front of the docking plate, the cross arm includes a front surface connected to each other, The rear surface, the upper surface and the lower surface, the arm protrudes forward from the front surface, the upper surface of the cross arm is lower than the upper surface of the arm, and the lower surface is higher than the lower surface of the arm, and the first insulator includes The plastic part set separately from the docking plate, the plastic part is injection molded on the cross arm, the plastic part covers the front surface, the rear surface, the upper surface and the lower surface of the cross arm, the plastic part and the front end of the arm The faces tend to be coplanar, the left and right ends are combined with the arms, and the rear end is combined with the butt plate. 6. A method of manufacturing an electrical connector, comprising the steps of: A support body sintered by ceramic material is provided, the support body includes a main body and two arms extending forward from the main body, the two arms are spaced apart left and right, each arm is provided with a locking groove and a protrusion located in front of the lock groove; A first insulator is provided, the first insulator is integrally injection-molded on the support body, the first insulator is provided with a butt plate located between the two arms, and the butt plate and the arms form a tongue plate; providing a conductive terminal, the conductive terminal includes a contact portion arranged on the upper and lower surfaces of the docking plate and an extended connecting foot; A metal shell is provided, the metal shell is provided with an insertion hole, the tongue plate is located in the insertion hole, and the contact portion is exposed to the insertion hole. 7. The manufacturing method of the electrical connector according to claim 6, characterized in that: a second insulator is provided, the second insulator is forwardly assembled on the support body or the first insulator, and the conductive terminal is held on the second On the insulator, the contact portion extends forward out of the second insulator. 8. The manufacturing method of the electrical connector according to claim 7, wherein the upper and lower surfaces of the butt plate have a plurality of receiving grooves spaced apart left and right, and the first insulator includes a base connected to the rear end of the butt plate , the base is provided with a fixing groove that runs through the base from front to back, the fixing groove communicates with the receiving groove one by one, the contact part is inserted into the receiving groove through the fixing groove, and the support body is provided with a front receiving space between the two arms And from the front storage space to the rear storage space of the main body, the butt plate is located in the front storage space, the front end of the second insulator is assembled in the rear storage space, and the rear end protrudes from the support body. 9 . The manufacturing method of the electrical connector according to claim 6 , wherein the supporting body is provided with a cross arm connecting at least one front end of the arm portion, and the first insulator covers the front surface of the cross arm. 10 . 10. The manufacturing method of the electrical connector according to claim 6, wherein the supporting body includes a cross arm connected to the arm, the cross arm is located in front of the docking plate, and the cross arm includes interconnected The front surface, the rear surface, the upper surface and the lower surface, the arm protrudes forward from the front surface, the upper surface of the cross arm is lower than the upper surface of the arm, and the lower surface is higher than the lower surface of the arm. An insulator includes a plastic part that is separately provided from the butt plate, and the plastic part is injection-molded on the cross arm and covers the front surface, the rear surface, the upper surface and the lower surface of the cross arm, and the plastic part is connected to the front end surface of the arm Tends to be coplanar, the left and right ends are combined with the arms, and the rear end is combined with the butt plate.