electrical connectors

Abstract

An electrical connector includes a shielding shell having a receiving space, a signal terminal received in the receiving space, and an insulating body fixed to the shielding shell and the signal terminal, the shielding shell having an annular portion, the signal terminal having a base disposed in the receiving space, a contact portion located in the center of the annular portion and protruding upward from the upper surface of the base, and a welding portion extending outward from the periphery of the base, the upper surface of the base and the upper surface of the welding portion being thinned downward so that the upper surface of the base is recessed downward to form a recess.

Description

Technical field

[0001] An object of the present invention is to provide an electrical connector that increases the distance between the upper surface of the soldering portion of a signal terminal and the upper surface of a base, thereby reducing the risk of solder creep. [Background Technology]

[0002] U.S. patent US20110275243 generally includes a grounding terminal, which includes an annular body, which is rolled into an interface, and a grounding pin is extended on both sides of the interface and at a certain position away from the interface. A signal terminal has a base, one end of the base is provided with a welding portion, and the other end extends upward to a contact portion located in the center of the annular body. Since the base is located directly below the interface, in order to ensure that the bottom edge of the annular body does not contact the base, the gap between the bottom edge of the annular body and the base must be large enough. However, under the current development trend of light and thin electronic products, reducing the overall height of the connector has become an inevitable design direction. Therefore, the thickness of the insulating body will be reduced, and the gap between the bottom edge of the annular body and the base will also become smaller. The annular body is likely to contact the signal terminal, causing a short circuit.

[0003] Therefore, it is necessary to improve the existing electrical connector to overcome this defect. [Summary of the invention]

[0004] An object of the present invention is to provide an electrical connector that increases the distance between the upper surface of the soldering portion of a signal terminal and the upper surface of a base, thereby reducing the risk of solder creep.

[0005] The objectives of the present invention are achieved through the following technical solutions: an electrical connector, comprising a shielding shell having a receiving space, a signal terminal received in the receiving space, and an insulating body fixed to the shielding shell and the signal terminal, the shielding shell having an annular portion, the signal terminal having a base arranged in the receiving space, a contact portion located in the center of the annular portion and protruding upward from the upper surface of the base, and a welding portion extending outward from the periphery of the base, the upper surface of the base and the upper surface of the welding portion being thinned downward so that the upper surface of the base is recessed downward to form a recess.

[0006] Furthermore, the welding portion is located in the receiving space and does not extend out of the annular portion.

[0007] Furthermore, the insulating body includes a base integrally provided with the annular portion and a receiving portion located in the receiving space and penetrating the upper and lower surfaces of the base, and the welding portion is located in the receiving portion.

[0008] Furthermore, the recess includes an annular recess formed by sinking downward from the upper surface of the base and surrounding the bottom of the contact portion, and the upper surface of the welding portion and the annular recess are in the same plane.

[0009] Furthermore, the shielding shell also includes a pair of spaced-apart welding plate portions extending from both sides of the lower end of the annular portion and a gap portion located between the pair of welding plate portions, and the gap portion is correspondingly arranged on the outside of the accommodating portion.

[0010] Furthermore, the insulating body also includes a plastic reinforcement portion arranged laterally and arranged in the same row as the accommodating portion, and a side portion arranged opposite to the inner wall surface of the accommodating portion is provided on the inner side of the plastic reinforcement portion, and the welding portion extends in the same direction as the plastic reinforcement portion and does not exceed the side portion.

[0011] Furthermore, the signal terminal also has an opening located on the cross section of the welding portion, which is arranged on the annular recess and the upper surface of the base. The insulating body includes a through hole located in the center of the base and an accommodating groove located on the inner side of the accommodating portion corresponding to the lower surface of the base. The contact portion extends from the through hole from the bottom to the top, and the root of the welding portion is accommodated in the accommodating groove.

[0012] Furthermore, the signal terminal further includes side grooves formed upward from the lower surface of the base, and the side grooves are located on the lower surface of the base at both sides of the front and rear of the welding portion and the lower surface of the base opposite to the welding portion.

[0013] Furthermore, the shielding shell further includes a metal reinforcement portion constituting the annular portion and located above the gap portion, and the metal reinforcement portion is fixedly disposed on the plastic reinforcement portion.

[0014] Furthermore, the distance between the upper surface of the base corresponding to the welding portion and the upper surface of the welding portion is 0.11 mm.

[0015] Compared with the prior art, the present invention has the following beneficial effects: by thinning the base and the soldering portion where the bottom of the contact portion of the signal terminal is located, the distance between the soldering portion surface and the base surface is increased, thereby reducing the risk of solder creep.

Brief Description of the Drawings

[0016] Figure 1 It is a three-dimensional diagram of the electrical connector of the present invention.

[0017] Figure 2 yes Figure 1 A stereogram from another perspective.

[0018] Figure 3 It is a three-dimensional exploded view of the electrical connector of the present invention.

[0019] Figure 4 yes Figure 3 A three-dimensional exploded view from another perspective.

[0020] Figure 5 yes Figure 1 Sectional view along line AA.

[0021] Figure 6 yes Figure 1 Cross-sectional view along line BB.

[0022] Figure 7 This is the state of the signal terminal base and soldering portion before thinning.

[0023]

Main component symbol description

[0024] Electrical connector 100 signal terminal 1

[0025] Base 10 Annular recess 101

[0026] Lower surface 102 side groove 1021

[0027] Cross section 103 Opening 104

[0028] Contact portion 11 Welding portion 12

[0029] End surface 121 shielding shell 2

[0030] Accommodation space 20 Annular portion 21

[0031] Metal reinforcement part 211 welding plate part 22

[0032] Slide groove 221 Gap portion 222

[0033] Insulation body 3 base 30

[0034] Through hole 301 Accommodation portion 302

[0035] Accommodating groove 303 Plastic reinforcement part 31

[0036] Supporting portion 311 Side portion 312

[0037] The following specific embodiments will further illustrate the present invention in conjunction with the above-mentioned drawings. [Specific implementation method]

[0038] Please refer to Figures 1 to 7As shown, the electrical connector 100 of the present invention includes a shielding housing 2, signal terminals 1 housed within the shielding housing 2, and an insulating body 1 secured to the shielding housing 2 and the signal terminals. The signal terminals 1 and the shielding housing 2 are insert-molded within the insulating body 3. In the present invention, the direction of the solder plate portion 22 is referred to as the front-to-back direction.

[0039] Please refer to Figures 1 to 6 , the shielding shell 2 is made of metal. The shielding shell 2 is arranged in a ring shape to form a receiving space 20. The shielding shell 2 includes an annular ring portion 21, a pair of welding plate portions 22 extending from both sides of the lower end of the annular portion and arranged in the front-to-back direction, and a gap portion 222 located between the pair of welding plate portions. The shielding shell 2 also includes a metal reinforcement portion 211 located above the gap portion 222 and constituting the annular portion 21. A pair of slide grooves 221 are arranged on the inner side of each welding plate portion 22 in a lateral direction and tilted to the left and right. The plastic reinforcement portion 31 mentioned below is correspondingly provided with a supporting portion 311 that is arranged to engage with the slide groove 221.

[0040] Please refer to Figures 1 to 6 The insulating body 3 includes a base 30 integrally provided with the annular portion 21, a receiving portion 302 located within the receiving space 20 and penetrating the upper and lower surfaces of the base 30, a plastic reinforcement portion 31 arranged transversely and arranged in the same row as the receiving portion 302, and a side portion 312 located on the inner side of the plastic reinforcement portion 31 and opposite to the inner wall surface of the receiving portion 302. The gap portion 222 is correspondingly provided on the outer side of the receiving portion 302. The insulating body 3 includes a through hole 301 located in the center of the base 30 and a receiving groove 303 located on the lower surface of the base 30 corresponding to the inner side of the receiving portion 302. The edge of the plastic reinforcement portion 31 of the insulating body 3 is flush with the edge of the welding plate portion 22 of the shielding shell 2 in the transverse direction. The metal reinforcement portion 211 is fixedly provided on the plastic reinforcement portion 31.

[0041] The signal terminal 1 comprises a base 10 disposed within the receiving space 20, a contact portion 11 protruding upward from the base 10 and located in the center of the annular portion 21, and a welding portion 12 extending from one side of the base 10. The welding portion 12 is located within the receiving space 20 and does not extend beyond the outside of the annular portion 21. The welding portion 12 is located within the accommodating portion 302, and extends in the same direction as the plastic reinforcement portion 31. The end surface 121 of the welding portion 12 does not extend beyond the side portion 312. The upper surface 105 of the base 10 and the upper surface of the welding portion 12 are thinned downwardly to form a recessed portion (not numbered) on the upper surface of the base 10. The recess includes an annular recess 101 formed downwardly from the upper surface of the base 10 and surrounding the bottom of the contact portion 11. The upper surfaces of the welding portion 12 and the annular recess 101 are coplanar. The signal terminal 1 further includes an opening 104 disposed between the annular recess 101 and the upper surface of the base 10, located on the cross-section 103 of the soldering portion 12. The contact portion 11 extends upward from the through-hole 301, and the root of the soldering portion 12 is received in the receiving groove 303. The signal terminal 1 also includes side grooves 1021 recessed upward from the lower surface 102 of the base 10. These side grooves 1021 are located on the lower surface of the base 10, front and rear of the soldering portion 12, and on the lower surface of the base 10 opposite the soldering portion 12. The soldering portion 12 is located between the pair of soldering plate portions 22.

[0042] The distance between the upper surface of the base 30 corresponding to the welding portion 12 and the upper surface of the welding portion 12 is 0.11 mm.

[0043] The insulating body 3 is insert-molded onto the bottom of the shielding housing 2 and signal terminals 1. This insert-molding method is typically referred to as insert-overmolding. The insulating body 3 partially covers the shielding housing 2 and signal terminals 1. The soldering portion 12 is located within the receiving space 20 of the shielding housing 2 and does not extend beyond the receiving space, ensuring good signal integrity. Furthermore, because the shielding housing 2 and signal terminals 1 are fixed to the insulating body 3, there is no relative movement between the shielding housing 2 and the signal terminals 1.

[0044] During assembly, the shielding housing 2 and the signal terminal 1 are first positioned, with the contact portion centered on the annular portion 21 and the soldering portion 12 located within the receiving space 20. The insulating body 3 is then insert-molded around the bottom of the shielding housing 2 and the signal terminal 1. The insulating body 3 partially covers the shielding housing 2 and the signal terminal 1, with the soldering portion 12 located within the receiving portion 302.

[0045] In the present invention, the base 10 and the soldering portion 12 at the bottom of the contact portion 11 of the signal terminal are thinned, thereby increasing the distance between the surface of the soldering portion 12 and the surface of the base 10, thereby reducing the risk of solder creep. In addition, since the soldering portion 12 of the signal terminal is arranged in the receiving space 20 provided in the shielding shell, the signal integrity is improved.

[0046] The above descriptions are only some embodiments of the present invention, not all embodiments. Any equivalent changes made to the technical solution of the present invention by ordinary technicians in this field after reading the specification of the present invention are covered by the claims of the present invention.

Claims

1. An electrical connector comprising a shielding housing having a receiving space, a signal terminal received in the receiving space, and an insulating body secured to the shielding housing and the signal terminal, the shielding housing having an annular portion, the signal terminal having a base disposed within the receiving space, a contact portion projecting upward from an upper surface of the base and located in the center of the annular portion, and a soldering portion extending outward from a peripheral edge of the base, characterized in that: The upper surface of the base and the upper surface of the welding portion are thinned downward so that the upper surface of the base is recessed downward to form a recessed portion. The insulating body includes a base integrally provided with the annular portion and a receiving portion located in the receiving space and penetrating the upper and lower surfaces of the base. The insulating body also includes a transversely arranged plastic reinforcement portion arranged in the same row as the receiving portion. A side portion opposite to the inner wall surface of the receiving portion is provided on the inner side of the plastic reinforcement portion. The welding portion extends in the same direction as the plastic reinforcement portion and does not extend beyond the side portion.

2. The electrical connector according to claim 1, wherein: The welding portion is located in the receiving space and does not extend out of the annular portion.

3. The electrical connector according to claim 2, wherein: The welding portion is located in the accommodation portion.

4. The electrical connector according to claim 3, wherein: The recess comprises an annular recess formed by sinking downward from the upper surface of the base body and surrounding the bottom of the contact portion. The upper surface of the welding portion and the annular recess are in the same plane.

5. The electrical connector according to claim 4, wherein: The shielding shell further includes a pair of spaced-apart welding plate portions extending from both sides of the lower end of the annular portion and a gap portion located between the pair of welding plate portions, wherein the gap portion is correspondingly arranged on the outside of the accommodating portion.

6. The electrical connector according to claim 5, wherein: The signal terminal further has an opening provided on the cross section of the soldering portion and disposed between the annular recess and the upper surface of the base. The insulating body includes a through hole located in the center of the base and a receiving groove located on the lower surface of the base corresponding to the inner side of the receiving portion. The contact portion extends upward from the through hole, and the root of the soldering portion is received in the receiving groove.

7. The electrical connector according to claim 1, wherein: The signal terminal further includes side grooves formed upward from the lower surface of the base. The side grooves are located on the lower surface of the base at both sides of the front and rear of the welding portion and the lower surface of the base opposite to the welding portion.

8. The electrical connector according to claim 6, wherein: The shielding shell further includes a metal reinforcement portion that is located above the gap portion and constitutes the annular portion, and the metal reinforcement portion is fixedly disposed on the plastic reinforcement portion.

9. The electrical connector according to claim 1, wherein: The distance between the upper surface of the base corresponding to the welding portion and the upper surface of the welding portion is 0.11 mm.

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