CN113922129A

CN113922129A - Electric connector and production process thereof

Info

Publication number: CN113922129A
Application number: CN202111347408.2A
Authority: CN
Inventors: 练丹; 应建均
Original assignee: Shenzhen Yihaite Precision Electronics Co ltd
Current assignee: Shenzhen Yihaite Precision Electronics Co ltd
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2022-01-11

Abstract

The invention relates to an electric connector, which comprises an insulating body, and a grounding terminal, a power element and a signal element which are embedded in the insulating body, wherein the grounding terminal, the power element and the signal element are all provided with substrate parts which are positioned on the same plane, and the substrate parts are provided with butting parts which are formed by bending. The production process of the electric connector comprises the following steps: punching and cutting a substrate of a grounding terminal, a power element or a signal element in the die by using a knife edge to form a blanking hole on the substrate; and stamping and bending the substrate of the grounding terminal, the power element or the signal element in the die by using a punch so as to form a bent and formed butt joint part on the substrate. The base plate portion of the electric connector is provided with the butt joint portion formed by bending, the shape and the size of the butt joint portion are controllable, the butt joint portion is not prone to being inclined, the butt joint portion can be aligned to a reserved hole position of a pre-encapsulation die when the insulation body is encapsulated and formed, the butt joint portion is not prone to being covered by punching glue, the problem of breaking and short is avoided, burrs are not prone to being generated and remaining, and reliable telecommunication transmission is avoided being influenced.

Description

Electric connector and production process thereof

Technical Field

The invention relates to the technical field of electric connectors, in particular to an electric connector and a production process thereof.

Background

USB Type-C is a USB interface appearance standard, has than Type-A and Type-B all little volume, can be applied to PC (master device) and can be applied to the interface Type of external equipment (slave device, like the cell-phone) again. The USB Type-C has small volume, and the interface has no difference in positive and negative directions, can be inserted and pulled randomly, and gradually becomes the mainstream interface in the market.

Chinese patent CN 105958241 a discloses an electrical connector, which comprises an insulating body, and a ground terminal, a power element and a signal element embedded in the insulating body, wherein the ground terminal, the power element and the signal element are all provided with substrate portions located on the same plane, and the butt joint portions of the ground terminal, the power element and the signal element are arranged on the upper side and the lower side of the insulating body correspondingly and reversely. The structure adopts a tearing structure during production, the substrate part forms a butt joint part protruding relative to the substrate through a bending forming process, the assembly of parts is reduced, and the overall strength of the electric connector is improved.

However, by adopting the bending forming structure, the substrate is easy to displace and deviate when stressed, so that the stress is uneven, the size of the butt joint part formed by bending is unstable and the butt joint part is easy to be inclined, the butt joint part is easy to be covered by the rubber coating when embedded in the insulating body through the rubber coating process, the product is not conducted and cannot be contacted, and the reject ratio is very high.

Disclosure of Invention

Therefore, it is necessary to provide an electrical connector and a manufacturing process thereof for solving the problems of unstable size of the mating portion and easy encapsulation of the mating portion due to the adoption of a bending structure. Can make the stable, difficult crooked rubber coating of butt joint portion size, the product yields is high.

An electric connector comprises an insulating body, and a grounding terminal, a power element and a signal element which are embedded in the insulating body, wherein the grounding terminal, the power element and the signal element are all provided with substrate portions which are positioned on the same plane.

In one embodiment, a blanking hole is formed between the base plate portion and the butt joint portion.

In one embodiment, the width of the blanking hole is not less than 0.1 mm.

In one embodiment, the width of the blanking hole is 0.24 mm.

In one embodiment, the widths of the signal element mating portions and the ground terminal mating portions are smaller than the power element mating portion width.

In one embodiment, the plug-in type plug-in type plug-in type plug-type plug-in type plug-in type plug-type plug-in.

In one embodiment, the plug further comprises a shell which is wrapped outside the insulating body and is provided with flat pins.

In one embodiment, the insulating body comprises a main body part and a tongue plate protruding forwards from the main body part, and one end of the tongue plate, which is far away from the main body part, is of an encapsulated structure.

In one embodiment, the two sides of the insulating body are both provided with a plurality of limiting holes.

The production process of the electric connector comprises the following steps: blanking, namely stamping and cutting off a substrate of a grounding terminal, a power supply element or a signal element in the die by adopting a knife edge to form a blanking hole on the substrate; and the number of the first and second electrodes,

and (3) bending, namely stamping and bending the substrate of the grounding terminal, the power element or the signal element in the die by using a punch so as to form a bent and formed butt joint part on the substrate.

In one embodiment, after the bending step, the ground terminal, the power element or the signal element is encapsulated, so that the ground terminal, the power element and the signal element are embedded in the integrally formed insulating body.

Above-mentioned electric connector adopts base plate portion to be provided with the fashioned butt joint portion of bending, and the shape and size of butt joint portion is controllable, is difficult for crooked, and the butt joint portion can aim at the reservation hole site of pre-rubber coating mould when insulator rubber coating shaping, is difficult for being covered by the dashing, avoids causing the short-circuit problem absolutely, is difficult for producing the burr and remains, avoids influencing reliable telecommunication transmission.

Drawings

FIG. 1 is a schematic diagram of an electrical connector according to one embodiment;

FIG. 2 is an exploded view of the electrical connector of one embodiment;

FIG. 3 is a schematic view of an insulative body according to one embodiment;

FIG. 4 is a schematic view of an installation structure of the ground terminal, the power supply element and the signal element according to one embodiment;

FIG. 5 is a side view of FIG. 4;

FIG. 6 is a schematic structural diagram of a housing according to one embodiment;

FIG. 7 is a schematic structural view of a housing according to another embodiment;

FIG. 8 is a schematic structural view of a housing according to another embodiment;

fig. 9 is a flow chart of a manufacturing process of the electrical connector according to one embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Referring to fig. 1 and fig. 2, an electrical connector according to a preferred embodiment of the present invention includes an insulative housing 1, a housing 2 covering the insulative housing 1, and a plurality of conductive terminals embedded in the insulative housing 1, wherein the conductive terminals include a ground terminal 3, a power element 4, and a signal element 5.

Referring to fig. 3, the insulating housing 1 is integrally formed, and includes a main body 11 and a tongue plate 12 protruding forward from the main body. The end of the tongue 12 remote from the main body 11 is an over-molded structure 13. A plurality of limiting holes 14 are formed in two surfaces of the insulating body, and are used for fixing and limiting when the signal element is coated with rubber, so that butt joint parts of the grounding terminal, the power supply element and the signal element can be limited in the design requirement range.

Referring to fig. 2, 3 and 4, the ground terminal 3 includes a pair of

ground terminals

3A and 3B located at two sides of the conductive terminal, each of the

ground terminals

3A and 3B includes a first substrate portion 31, a first fixing portion 32 connected to the first substrate portion 31 and fixed in the insulating body 1, a first solder leg 33 extending from the first fixing portion 32 to the insulating body 1, and a first butt-joint portion 34 bent from the first substrate portion 31, the first butt-joint portion 34 and the first substrate portion 31 are located on different planes, and two first blanking holes 35 are opened between the first substrate portion 31 and the first butt-joint portion 34. The width of the first blanking hole 35 is not less than 0.1mm, and if the width is less than 0.1mm, the blanking and cutting process cannot be implemented, and the bending forming cannot be performed. Preferably, the width of the first blanking hole 35 is 0.24 mm. The first butting portions 34 of the

ground terminals

3A, 3B each have a width of 0.24 mm. The first substrate portions 31 of the two ground terminals 3 are located on the same plane, the first butting portion 34 of the ground terminal 3A protrudes toward the lower side of the corresponding first substrate portion 31, the first butting portion 34 of the ground terminal 3B protrudes toward the upper side of the corresponding first substrate portion 31, and the first butting portion 34 of the ground terminal 3B and the first butting portion 34 of the ground terminal 3A protrude out of the upper and lower sides of the tongue-shaped portion 12 respectively to contact with the ground terminal of the mating connector. And, the ground terminal 3B protrudes out of the right side of the tongue plate 12, and the ground terminal 3A protrudes out of the left side of the tongue plate 12. The first butting portions 34 of the

ground terminals

3A and 3B are located between the two first blanking holes 35, that is, the first butting portions 34 are located at the middle position of the first substrate portion 31.

The power supply element 4 includes a pair of

power supply elements

4A and 4B located inside the ground terminal 3, each of the

power supply elements

4A and 4B includes a second substrate portion 41, a second fixing portion 42 connected to the second substrate portion 41 and fixed in the insulating body 1, a second solder leg 43 extending from the second fixing portion 42 out of the insulating body 1, and a second butt-joint portion 44 bent and formed from the second substrate portion 41, the second butt-joint portion 44 and the second substrate portion 41 are located on different planes, and a second blanking hole 45 is formed between the second substrate portion 41 and the second butt-joint portion 44. The width of the second blanking hole 45 is not less than 0.1 mm. Preferably, the width of the second blanking aperture is 0.24 mm. The width of the second docking portion 44 for the

power supply elements

4A, 4B is 0.34mm to meet the requirement of the function of transmitting 10A current. The second abutting portion 44 of the power element 4A protrudes downward of the corresponding second substrate portion 41, and the second abutting portion 44 of the power element 4B protrudes upward of the corresponding second substrate portion 41. The second docking portions 44 of the

power devices

4B and 4A are respectively exposed on the upper and lower sides of the tongue plate 12.

The signal element 5 is located inside the power element 4, and each of the

signal elements

5A and 5B includes a third substrate portion 51, a third fixing portion 52 connected to the third substrate portion 51 and fixed in the insulating body 1, a third solder leg 53 extending from the third fixing portion 52 to the insulating body 1, and a third butt-joint portion 54 bent from the third substrate portion 51, where the third butt-joint portion 54 and the third substrate portion 51 are located on different planes, and a third blanking hole 55 is disposed between the third substrate portion 51 and the third butt-joint portion 54. The width of the third blanking hole 55 is not less than 0.1 mm. Preferably, the width of the third blanking hole 55 is 0.24 mm. The width of the third butting portion 54 of each of the

signal elements

5A, 5B is 0.24 mm.

The third butting portion 54 of the signal element 5A protrudes downward from the corresponding third substrate portion 51, and the third butting portion 54 of the signal element 5B protrudes upward from the corresponding third substrate portion 51. The third butting portions 54 of the

signal elements

5A and 5B are respectively exposed on the upper side and the lower side of the tongue plate 12. The third mating portion 54 of the signal component 5B is adjacent to the second mating portion 44 of the power component 4A, and the third mating portion 54 of the signal component 5A is adjacent to the second mating portion 44 of the power component 4B. Referring to fig. 5, the third abutting portion 54 and the first abutting portion 34 are disposed in a staggered manner in a front-back direction, so as to facilitate one-step bending.

The mating portion 54 of the signal element 5 and the mating portion width 34 of the ground terminal 3 are each smaller than the mating portion 44 width of the power element 4. The butting portion width 44 of the power supply element 4 is not less than 0.3 mm. For example, the first butting portions 34 of the

ground terminals

3A, 3B each have a width of 0.24 mm. The width of the third butting portion 54 of each of the

signal elements

5A, 5B is 0.24 mm. The width of the second docking portion 44 for the

power supply elements

4A, 4B is 0.34mm to meet the requirement of the function of transmitting 10A current.

The front end of the shell 2 is provided with an oval butt frame port which is consistent with the butt frame port of a standard USBType-C socket connector and is used for being matched with the positive and negative insertion of the butt plug connector, and the USB socket connector has the advantage of convenience in use of positive and negative insertion. Plug-in pins are provided on both sides of the housing 2. When the housing 2 is disposed parallel to the PCB, as shown in fig. 1, for example, the plug-in pins are sheet-shaped structures 21 and are disposed vertically downward. The vertically downward sheet structure 21 can penetrate through the PCB below the housing 2, and is accurately positioned and firmly welded. Referring to fig. 6, in another example, the plug-in pins are a supporting frame structure 22, and the supporting frame structure 22 has a transverse flitch portion 221 and a vertical plug portion 222. The panel portion 221 and the insertion portion 222 are integrally formed. The mating part 222 is inserted into the PCB for positioning. The patch part 221 is used for soldering with a PCB board. A first welding hole 223 is formed between the patch part 221 and the insertion part 222. The tin absorption amount is large during welding, and the connection is more stable. When the housing 2 is placed vertically with respect to the PCB, as shown in fig. 7, the plug-in pins are sheet-like structures 23 and are horizontally and rearwardly disposed. The horizontal rearward tab 23 may pass through the PCB behind the housing 2 with accurate positioning and secure soldering. The housing 2 is provided with flush pins. When the housing 2 is disposed parallel to the PCB, please refer to fig. 8, the attached pins are in an "L" shape 24, and the "L" shape has a fillet welded portion 241, and is welded and fixed to the PCB through the fillet welded portion 241, so as to save the space on the back of the PCB. Preferentially, the flat-fillet welding part 241 is provided with a second welding hole 223, so that the tin consumption in welding is large and the welding is stable.

Referring to fig. 9, the manufacturing process of the electrical connector includes the following steps: step one S10: placing the grounding terminal, the power element or the signal element into a mold;

step two S20: and (S21) blanking, namely, punching and cutting the substrate of the grounding terminal, the power element or the signal element in the die by adopting a knife edge to form a blanking hole on the substrate.

At the same time, the bending step S22 is performed by punching and bending the substrate of the ground terminal, the power element or the signal element in the die by using a punch, so that the substrate forms a bent and formed mating portion.

Step three S30: and carrying out injection molding and encapsulation on the grounding terminal, the power supply element or the signal element, so that the grounding terminal, the power supply element and the signal element are embedded in the integrally formed insulating body.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides an electric connector, includes insulator and inlays ground terminal, power component and the signal component of burying in insulator, and ground terminal, power component and signal component all are equipped with the base plate portion that is located the coplanar, its characterized in that, base plate portion is provided with the fashioned butt joint portion of bending, base plate portion with the unloading hole has been seted up between the butt joint portion.

2. The electrical connector of claim 1, wherein the width of the blanking aperture is not less than 0.1 mm.

3. The electrical connector of claim 2, wherein the blanking aperture has a width of 0.24 mm.

4. The electrical connector of claim 1, wherein the mating portion of the signal element and the mating portion of the ground terminal each have a width less than the width of the mating portion of the power element.

5. The electrical connector of claim 1, further comprising a housing encased outside the insulator body, the housing being provided with plug-in pins.

6. The electrical connector of claim 1, further comprising a housing encased outside the insulator body, the housing being provided with flush pins.

7. The electrical connector of claim 1, wherein the insulative housing includes a main body and a tongue portion protruding forward from the main body, and an end of the tongue portion away from the main body is of an over-molded structure.

8. The electrical connector of claim 1, wherein a plurality of limiting holes are formed on both sides of the insulating body.

9. Process for producing an electrical connector according to any one of claims 1 to 8, comprising the following steps: blanking, namely stamping and cutting off a substrate of a grounding terminal, a power supply element or a signal element in the die by adopting a knife edge to form a blanking hole on the substrate; and the number of the first and second electrodes,

10. The electrical connector of claim 9, wherein after the bending step, the ground terminal, the power element or the signal element is encapsulated such that the ground terminal, the power element and the signal element are embedded in the integrally formed insulative body.