USB socket electric connectorTechnical Field
The present invention relates to an electrical connector, and more particularly to an electrical connector for a USB socket.
Background
The universal serial bus (Universal Serial Bus, abbreviated as USB) is currently the most commonly used standard for three-C products such as computers, mobile phones, cameras, etc. At present, the USB2.0 transmission standard has the highest market occupation rate. With the demand of transmission speed, new specifications of USB3.0 with faster transmission speed are being developed gradually into the market.
Generally, a USB includes a first terminal of a quad group and a second terminal of a penta group, and is usually assembled with an insulative housing in an insert-molding (insert-molding) manner, and is assembled with another one in an insert-molding manner due to assembly considerations. The inserted foot is easy to deviate, and the labor cost of assembly is high.
To automatically assemble the two terminals by injection molding sequentially, the current technology must develop a new mold and a cutting tool for automatically cutting more than the material tape. However, the cost of developing the mold and cutting jig is high, thereby increasing the cost of manufacturing, and the mold and cutting jig must be sold at a higher selling price to lose the competitive power of the market.
Therefore, it is desirable to provide a USB receptacle electrical connector that can be manufactured at a reduced cost and that can maintain high yields and high assembly quality.
Disclosure of Invention
In view of the above, the present invention provides an electrical connector for a USB socket. A plurality of flat terminals, a plurality of elastic terminals and an insulating body. The flat terminal comprises a first contact section, a first connecting section and a first welding section, wherein one side of the first connecting section extends from the first contact section and is bent with the first contact section, and the first welding section extends from the other side of the first connecting section and is bent with the first connecting section. The elastic terminals are arranged between the flat terminals in a staggered manner and comprise a second contact section, a second connecting section and a second welding section. One side of the second connecting section extends from the second contact section and is bent with the second contact section, and the second welding section extends from the other side of the second connecting section and is bent with the second connecting section. The insulating body comprises a tongue plate and a base body, and the tongue plate extends from one end of the base body. The first contact section and the second contact section are fixed on the tongue plate and at least a part of the first contact section and the second contact section are exposed, and the first welding part and the second welding part protrude from the base. The tongue plate comprises a plurality of breaking points, the base comprises a plurality of breaking parts, a part of the first connecting section and a part of the second connecting section are adjacently arranged and are positioned between the breaking parts, and the front end of the first contact section corresponds to the breaking points.
In one embodiment, before the flat terminal, the elastic terminal and the insulating body are assembled, the flat terminal and the elastic terminal are connected by a first connecting material belt and a second connecting material belt to form a material belt plate. The first connecting material belt comprises a plurality of material joints, the material joints correspond to the disconnection points and are connected with the first contact sections in a point connection mode, the second connecting material belt comprises a plurality of material connection parts, the material connection parts correspond to the disconnection parts, and each material connection part is connected with at least one of the first connecting section and the second connecting section.
In one embodiment, the strip piece is fixed to the insulating body by insert molding (inserting molding) so that the flat terminals and the elastic terminals are fixed by molding, and the base of the insulating body comprises an opening for inserting the jig. After the insert molding is completed, the first connecting material belt and the second connecting material belt can be separated from the insulating body by means of up-and-down folding or folding.
In one embodiment, the second connecting material belt comprises a plurality of grooves, and the grooves correspond to the first welding section and the second welding section respectively. That is, the first welding section and the second welding section are punched out of the second connecting material strip, and the first welding section and the second welding section are bent to leave a slot.
In one embodiment, the first and second welding sections are formed by bending the second connecting material strip in a tearing (tearing) manner. Thus, only one bending is needed, and the pins of the first welding section and the second welding section are aligned, so that dual in-line package (DIP) is easy.
In one embodiment, the flat terminals, the elastic terminals, the first connecting material strips and the second connecting material strips are integrally formed by stamping.
In an embodiment, the second connecting strip further includes a plurality of protection pins, and the protection pins are bent at an angle with respect to the second connecting strip.
In an embodiment, the USB socket electrical connector further includes a metal housing, and the metal housing is enclosed outside the insulating body. Further, the metal shell is also provided with a rear cover. To increase the shielding area and to enhance the effect of suppressing electromagnetic interference (electromagnetic interference, EMI) or radio frequency interference (radio frequency interference, RFI).
Further, the metal shell comprises a first wall, a second wall, a third wall and a fourth wall. The first wall, the second wall, the third wall and the fourth wall are connected to define an inserting space, the first wall is located above the insulating body, the second wall is located below the insulating body, at least one protruding block is formed on the first wall and the second wall, and the protruding block extends from the first wall towards the inserting space.
Further, a notch is formed in the first wall of the metal housing. The notch exposes at least one power terminal of the flat terminal or the elastic terminal. Therefore, when the USB socket electric connector is connected with the plug, the power terminal is prevented from being in contact with the metal shell to generate a short circuit, and the problem of overheating or element damage caused by the short circuit is avoided.
In summary, in the above embodiments, the flat terminals and the elastic terminals are connected through the first connecting material belt and the second connecting material belt to form the material belt plate, so that the insert molding can be directly performed, and the mold development cost is reduced. In addition, the welding sections of the flat terminal and the elastic terminal are directly bent and formed by the metal plate, so that the pins can be aligned to facilitate packaging. And redundant material pieces can be directly folded up and down to be separated, so that a cutting jig does not need to be developed, the whole process is more economical, and the market competitiveness is better.
Symbol description
Fig. 1 is a schematic perspective view of an embodiment of a USB receptacle electrical connector according to the present invention.
Fig. 2 is an exploded view of an embodiment of the USB receptacle connector of the present invention.
Fig. 3 is an exploded view of a plug module according to an embodiment of the USB socket connector of the present invention.
Fig. 4 is a perspective view of a tape plate member of the USB receptacle connector of the present invention prior to assembly.
Fig. 5 is a perspective view of the assembled tape plate and insulator of the USB socket connector of the present invention.
Fig. 6 is a rear perspective view of the assembled tape plate and insulator of the USB socket connector of the present invention.
Fig. 7 is a perspective view of the USB socket electrical connector of the present invention with the connection material tape removed.
Fig. 8 is a rear perspective view of the USB receptacle connector of the present invention with the connector tape removed.
Fig. 9 is a front view of an embodiment of the USB socket electrical connector of the present invention.
FIG. 10 is a schematic side view of an embodiment of the USB receptacle connector of the present invention.
Fig. 11 is a schematic perspective view of another embodiment of the USB socket electrical connector of the present invention.
FIG. 12 is a schematic side view of another embodiment of the USB receptacle connector of the present invention.
Symbol description
1USB socket electric connector
2 plug-in module
10 flat terminal
11 first contact section
111 flat contact
13 first connecting section
131 first part
133 second part
135 first side junction
15 first welding section
20 spring terminal
21 second contact section
211 spring contact
23 second connecting section
231 third part
233 fourth part
235 fifth part
237 second side surface
25 second welding section
30 insulating body
31 seat body
311 breaking part
313 opening(s)
33 tongue plate
331 break point
50 metal shell
501 lack groove
51 rear cover
52 first wall
53 second wall
55 third wall
56 fourth wall
57 plug-in space
58 bumps
500 band plate piece
510 first connecting material belt
511 material contact
520 second connecting material belt
521 grooving
523 material joint
530 protect the foot.
Detailed Description
Referring to fig. 1-8, there are respectively a perspective view of an embodiment of the USB socket electrical connector of the present invention, an exploded view of a plugging module in an embodiment of the USB socket electrical connector of the present invention, a perspective view of a tape plate before assembling the USB socket electrical connector of the present invention, a perspective view of a tape plate and an insulating body of the USB socket electrical connector of the present invention after assembling the tape plate and the insulating body of the USB socket electrical connector of the present invention, a perspective view of a USB socket electrical connector of the present invention after removing a connecting tape, and a perspective view of a USB socket electrical connector of the present invention after removing a connecting tape. As shown in fig. 1 to 8, the USB socket electrical connector 1 includes a plurality of flat terminals 10, a plurality of elastic terminals 20, and an insulating body 30. The flat terminal 10, the elastic terminal 20 and the insulating body 30 are assembled into a plug-in module 2. A metal housing 50 may be further enclosed outside the plug-in module 2. In the following, five flat terminals 10 and four elastic terminals 20 are taken as examples, but the present invention is not limited thereto, and may be changed according to actual product specifications.
As shown in fig. 3, the flat terminal 10 includes a first contact section 11, a first connection section 13 and a first soldering section 15. One side of the first connecting section 13 extends from the first contact section 11 and is bent with the first contact section 11, and the first welding section 15 extends from the other side of the first connecting section 13 and is bent with the first connecting section 13. The first contact section 11 here comprises a protruding flat contact 111. The first connecting section 13 includes a first portion 131 and a second portion 133. The first portion 133 is connected to the first contact section 11 and bent at an angle, for example perpendicular to the first contact section 133. The second portion 133 is bent with the first portion 131 and is connected to the first welding portion 15. Thus, the shape of the first connecting section 13 is a differential, but is not limited thereto in practice and may vary depending on the actual product design. The second portion 133 further includes two first side interfaces 135, and the first side interfaces 135 are located at two sides of the junction between the first welding portion 15 and the second portion 133.
The elastic terminals 20 are arranged between the flat terminals 10 in a staggered manner, and the elastic terminals 20 comprise a second contact section 21, a second connection section 23 and a second welding section 25. One side of the second connecting section 23 extends from the second contact section 21 and is bent with the second contact section 21, and the second welding section 25 extends from the other side of the second connecting section 23 and is bent with the second connecting section 23. The second contact section 21 has a protruding spring contact 211. The second connecting section 23 includes a third portion 231, a fourth portion 233, and a fifth portion 235. The third portion 231 extends from the second contact section 21 and is bent at an angle, e.g., perpendicular, to the second contact section 21. The fourth portion 233 is bent from the third portion 231, the fifth portion 235 extends from the fourth portion 231 and is connected to the second welding portion 25, and the second welding portion 25 and the fifth portion 235 are bent at an angle, for example, perpendicular to the fifth portion. The shape of the second connecting section 23 is thus a differential, but is not limited thereto and may vary depending on the actual product design. In addition, the fourth portion 235 includes two second side surfaces 237, and the second side surfaces 237 are located on two sides of the junction of the fifth portion 235 and the fourth portion 233.
The insulating body 30 includes a base 31 and a tongue 33. The tongue plate 33 extends from one end of the base 31, and the first contact section 11 and each second contact section 21 are fixed to the tongue plate 33 and expose at least a portion, such as the flat contact portion 111 and the elastic contact portion 211. The first welding portion 15 and the second welding portion 25 protrude from the base 31.
As shown in fig. 4, before the flat terminal 10, the elastic terminal 20 and the insulative housing 30 are assembled, a first connecting material strip 510 and a second connecting material strip 520 are connected to form a material strip plate 500. The strip plate 500 is directly formed by integral stamping from a metal plate to form the flat terminal 10, the spring terminal 20, the first connecting strip 510 and the second connecting strip 520. The same tape piece 500 may include a plurality of first and second connection tapes 510 and 520 to be molded.
The first connecting material strip 510 includes a plurality of material contacts 511, the material contacts 511 connect the front ends of the first contact sections 11 in a point connection manner, the second connecting material strip 520 includes a plurality of slots 521 and a plurality of material connection portions 523, the slots 521 correspond to the first welding sections 15 and the second welding sections 25, and the first welding sections 15 and the second welding sections 25 can be bent out of the second connecting material strip 520 by tearing (tearing) manner, and the slots 521 with corresponding shapes and positions are left. The material connection portion 523 is located at two sides of the slot 521 and is connected to at least one of the first side connection surface 135 and the second side connection surface 237. The first side interface 135 and the second side interface 237 are adjacently aligned in pairs. In addition, the material belt piece 500 further includes a plurality of protection pins 530, and the protection pins 530 are bent at an angle to the second connecting material belt 520, for example, perpendicular to the second connecting material belt 520, so as to be more stable in the following embedding process.
As shown in fig. 5 and 6, the strip member 500 is fixed to the insulating body 30 by insert molding (inserting molding), so that the flat terminal 10 and the elastic terminal 20 are fixed in the insulating body 30 by molding. The base 31 of the insulating body 30 includes an opening 313 for inserting the jig. At this time, it can be seen that the first connecting material strip 510 and the first connecting material strip 520 are located outside the insulating body 30. Next, as shown in fig. 7-8, the first connecting material strip 510 may be separated from the material contact 511 by folding up and down, so as to leave a plurality of breaking points 331 on the tongue piece 33 of the insulating body 30. The disconnection points 331 correspond to the front ends of the first contact sections 11, respectively. After being folded up and down, the second connecting material strap 520 is separated from the insulating body 30 by the junction of the material connection portion 523 and the first side connection surface 135 and the second side connection surface 237. After the separation, a plurality of breaking portions 311 are left on the base 31 of the insulating body 30. The disconnection portions 311 correspond to the first side connection surface 135 and the second side connection surface 237 such that a portion of the first connection section 13 and a portion of the second connection section 23 are adjacently arranged and are located between the disconnection portions 311.
Referring again to fig. 1, 2, and 9-12. The USB socket electrical connector 1 further comprises a metal housing 50, and the metal housing 50 is disposed around the exterior of the insulating body 30. The metal housing 50 is used for improving the mechanical strength of the USB socket electrical connector 1 and preventing electromagnetic interference and radio frequency interference. As shown in fig. 7-8, the metal housing 50 includes a rear cover 51 extending from one end of the metal housing 50, so as to further partially shield the first and second welding portions 15 and 25 and further suppress electromagnetic interference and radio frequency interference.
In addition, the metal housing 50 includes a first wall 52, a second wall 53, a third wall 55 and a fourth wall 56, and the first wall 52, the second wall 53, the third wall 54 and the fourth wall 55 are connected to define a plugging space 57. The first wall 52 is located above the insulating body 30, the second wall 53 is located below the insulating body 30, at least one protrusion 58 is formed on the first wall 52 and the second wall 53, and the protrusion 58 extends from the first wall 52 and the second wall 53 toward the plugging space 57. The protrusion 58 can reduce the gap between the plug and the USB socket electric connector 1 when the plug is inserted, improve the inserting and pulling strength and avoid loosening. In addition, the bump 58 can contact the shielding shell of the plug to form a grounding loop, so as to further inhibit electromagnetic interference and radio frequency interference. The bumps 58 may be rectangular, oval, circular, elongated, etc.
Further, fig. 1, fig. 2, fig. 9, fig. 10, and fig. 11, fig. 12 are aligned. In addition to the common features described above, the shape of the metal shell 50 may be adjusted depending on the mating design of the plug. As shown in fig. 11 and 12, the metal housing 50 of this embodiment enables the plugging module 2 to be completely located in the plugging space 57, which can effectively suppress electromagnetic interference and radio frequency interference. As shown in fig. 1, 2, 9 and 10, with respect to the embodiment of fig. 11-12, the metal housing 50 is formed with a notch 501 on at least the first wall 51, and the notch 501 corresponds to at least the power terminal of the flat terminal 10 or the elastic terminal 20, so that the power terminal is exposed. Further, the third wall 55 and the fourth wall 56 also have sloping sides, so that the notch 501 extends to the side. The function of this embodiment is to avoid the metal housing 50 contacting the power terminal in the socket or the flat terminal 10 or the elastic terminal 20 during plugging, so as to avoid the problems of short circuit, overheat caused by short circuit, or element damage.
The flat terminals and the elastic terminals are connected by the connecting material belt to form the material belt plate piece, and the material belt plate piece can be directly embedded into the material belt plate piece, so that the development cost of the mold for embedded forming at two sides can be reduced. In addition, the welding sections of the flat terminal and the elastic terminal are directly bent and formed by the metal plate, so that the pins can be aligned to facilitate packaging. The redundant material pieces can be directly folded up and down to be separated, so that a cutting jig is not required to be developed, the whole process is more economical, and the market competitiveness is better.