CN-121983808-A - Plug connector

Abstract

The invention discloses a plug connector, which comprises an annular shell, a terminal module and a metal shell, wherein the terminal module is inserted into the rear end of the annular shell, the metal shell is sleeved on the periphery of the annular shell, the annular shell is provided with a plug cavity penetrating through the front and rear parts, the terminal module comprises an insulating body and a conductive terminal fixedly arranged on the insulating body, the conductive terminal is provided with a fixedly arranged part fixedly arranged in the insulating body, a contact part extending forwards from the fixedly arranged part and a welding part extending backwards from the fixedly arranged part, and the contact part extends into the plug cavity. The annular shell is provided with a main body part formed by metal powder injection molding and an insulating film layer plated on the surface of the main body part. The main body part made of metal solves the problem that the plastic deformation of the existing plastic shell is caused by stress and environmental temperature change, so that the deformation of a product frame opening cannot be caused, and meanwhile, the insulating coating is used for separating the main body part and the conductive terminal so as to realize electrical insulation between the main body part and the conductive terminal.

Inventors

• ZHU HONGKAI
• HE LONG

Assignees

• 启东乾朔电子有限公司

Dates

Publication Date

20260505

Application Date

20260304

Claims (10)

1. 1. The plug connector comprises an annular shell, a terminal module and a metal shell, wherein the terminal module is inserted into the rear end of the annular shell, the metal shell is sleeved on the periphery of the annular shell, the annular shell is provided with a plug cavity penetrating through the annular shell back and forth, the terminal module comprises an insulating body and a conductive terminal fixedly arranged on the insulating body, the conductive terminal is provided with a fixedly arranged part fixedly arranged in the insulating body, a contact part extending forwards from the fixedly arranged part and a welding part extending backwards from the fixedly arranged part, and the contact part extends into the plug cavity.
2. 2. The plug connector of claim 1, wherein the body portion is made of an aluminum alloy material via a metal injection molding process.
3. 3. The plug connector of claim 1, wherein the insulating film layer is formed from a surface of the body portion by a hard anodizing process.
4. 4. The plug connector of claim 1, wherein the thickness of the insulating film is 5-20 μm, and the hardness of the insulating film is HV 300-500.
5. 5. The plug connector of claim 1, wherein the annular housing is provided with an inner terminal groove recessed from an inner wall surface, the inner terminal groove communicates with the insertion cavity, and the contact portion of the conductive terminal is accommodated in the inner terminal groove.
6. 6. The plug connector of claim 5, wherein said annular housing is provided with a stepped portion extending from an inner wall to said inner terminal groove, a free end of said contact portion abutting against said stepped portion.
7. 7. The plug connector of claim 5, wherein the insulator body is provided with an upper insulator and a lower insulator stacked on each other, the conductive terminals include an upper row of terminals held on the upper insulator and a lower row of terminals held on the lower insulator, the upper insulator is injection molded on the upper row of terminals to form an upper terminal module, and the lower insulator is injection molded on the lower row of terminals to form a lower terminal module.
8. 8. The plug connector of claim 7, wherein the upper row of terminals is provided with two upper ground terminals located at the outermost side, the lower row of terminals is provided with two lower ground terminals located at the outermost side, the annular housing is provided with an outer terminal groove recessed inward from the outer wall, the outer terminal groove is located at the outer side of the inner terminal groove and communicated with the plug cavity, and the upper ground terminals and the lower ground terminals are accommodated in the corresponding outer terminal grooves.
9. 9. The plug connector of claim 7, wherein the plug connector includes a metal latch member between the upper terminal module and the lower terminal module, the latch member having a main plate portion sandwiched between the upper insulator and the lower insulator and latch arms extending forward from both ends of the main plate portion, the annular housing having side grooves recessed inward from both sides thereof, the latch arms being received in the side grooves, and free ends of the latch arms extending into the insertion cavity.
10. 10. The plug connector of claim 9, wherein the inner terminal grooves of the annular housing and the inner walls of the side grooves are both coated with the insulating film.

Description

Plug connector Technical Field The present disclosure relates to electrical connectors, and particularly to a plug connector for soldering with a cable. Background The existing plug connector comprises an insulating shell, two terminal modules, a middle shielding piece and a metal shell, wherein each terminal module is provided with an insulating block and a plurality of terminals fixedly held on the insulating block, the two terminal modules clamp the middle shielding piece to be assembled in the insulating shell together, and the metal shell is sleeved on the outer side of the insulating shell. However, the conventional insulating housing is made of plastic material, and particularly has a problem of shrinkage deformation under the condition of environmental influence (high temperature, high humidity, cold and hot impact, etc.), so that a gap is generated between the insulating housing and the metal shell in the plug connector. It is therefore desirable to provide a new plug connector that overcomes the above-mentioned drawbacks. Disclosure of Invention The invention aims to provide a plug connector, wherein a metal material is selected as an annular shell of the plug connector, and the performances of insulation, wear resistance and high dimensional accuracy are taken into consideration. The plug connector comprises an annular shell, a terminal module inserted into the rear end of the annular shell and a metal shell sleeved on the periphery of the annular shell, wherein the annular shell is provided with a front-rear penetrating insertion cavity, the terminal module comprises an insulating body and a conductive terminal fixedly arranged on the insulating body, the conductive terminal is provided with a fixedly arranged part fixedly arranged in the insulating body, a contact part extending forwards from the fixedly arranged part and a welding part extending backwards from the fixedly arranged part, and the contact part extends into the insertion cavity. The annular shell is provided with a main body part formed by metal powder injection molding and an insulating film layer plated on the surface of the main body part. In a preferred embodiment, the body portion is made of an aluminum alloy material through a metal injection molding process. In a preferred embodiment, the insulating film layer is formed by a hard anodizing process from the surface of the main body. In a preferred embodiment, the thickness of the insulating film layer is 5-20 μm, and the hardness of the insulating film layer is HV 300-500. In a preferred embodiment, the annular housing is provided with an inner terminal groove recessed from an inner wall surface, the inner terminal groove is communicated with the plug cavity, and the contact portion of the conductive terminal is accommodated in the inner terminal groove. In a preferred embodiment, the annular housing is provided with a step extending from the inner wall to the inner terminal groove, the free end of the contact portion abutting against the step. In a preferred embodiment, the insulating body is provided with an upper insulator and a lower insulator stacked on each other, the conductive terminals include an upper row of terminals held on the upper insulator and a lower row of terminals held on the lower insulator, the upper insulator is injection-molded on the upper row of terminals to form an upper terminal module, and the lower insulator is injection-molded on the lower row of terminals to form a lower terminal module. In a preferred embodiment, the upper row of terminals is provided with two upper ground terminals located at the outermost side, the lower row of terminals is provided with two lower ground terminals located at the outermost side, the annular housing is provided with an outer terminal groove recessed inwards from the outer wall, the outer terminal groove is located at the outer side of the inner terminal groove and is communicated with the plugging cavity, and the upper ground terminals and the lower ground terminals are accommodated in the corresponding outer terminal grooves. In a preferred embodiment, the plug connector includes a metal latch member located between the upper terminal module and the lower terminal module, the latch member is provided with a main board portion clamped between the upper insulator and the lower insulator and latch arms extending forward from two ends of the main board portion, the annular housing is provided with side grooves recessed inward from two lateral sides, the latch arms are accommodated in the side grooves, and free ends of the latch arms extend into the plugging cavities. In a preferred embodiment, the inner terminal groove and the inner wall of the side groove of the annular housing are both coated with the insulating film layer. Compared with the prior art, the annular shell has the beneficial effects that the annular shell is provided with the main body part formed by metal powder injection molding and the insulat