CN110808506B

CN110808506B - Coaxial connector

Info

Publication number: CN110808506B
Application number: CN201810883864.0A
Authority: CN
Inventors: 陈明庆
Original assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Current assignee: Foxconn Kunshan Computer Connector Co Ltd; Foxconn Interconnect Technology Ltd
Priority date: 2018-08-06
Filing date: 2018-08-06
Publication date: 2022-06-24
Anticipated expiration: 2038-08-06
Also published as: CN110808506A

Abstract

A coaxial connector comprises an insulating body, a central conductive terminal and a cylindrical metal shell, wherein the central conductive terminal is arranged on the insulating body, the central conductive terminal comprises a fixed part fixed on the insulating body, a contact part extending forwards along the fixed part and exposed out of the front end face of the insulating body, and a welding part extending backwards along the fixed part, the metal shell comprises a base part coated outside the insulating body and a cylindrical part which is positioned at the front end of the base part and forms an accommodating cavity with the contact part, the coaxial connector further comprises an auxiliary metal shell coated outside the metal shell, the cylindrical part of the metal shell is provided with a through hole, and the auxiliary metal shell is provided with a butting part which penetrates through the through hole to enter the accommodating cavity. According to the invention, the abutting part abutting against the shell of the butting connector is arranged on the auxiliary metal shell which has better electrical property than the metal shell, so that the abutting part is more wear-resistant, can bear multiple plugging and unplugging, and can ensure the strength of the metal shell.

Description

Coaxial connector

[ technical field ] A method for producing a semiconductor device

The present invention relates to a coaxial connector, and more particularly to a coaxial connector capable of being inserted and pulled repeatedly.

[ background ] A method for producing a semiconductor device

Chinese utility model patent publication No. CN202094379U discloses a coaxial connector, which comprises an insulator, a central conductive terminal fixed on the insulator, and a secondary metal shell covering the insulator and having a cylindrical shielding shell and a clamping part outside the shielding shell, wherein the coaxial connector is only clamped by the front opening of the shielding shell when being butted with a butting connector, and becomes loose after being plugged for many times, thereby affecting the use effect.

Therefore, there is a need to provide a coaxial connector that overcomes the above-mentioned drawbacks.

[ summary of the invention ]

The invention aims to provide a coaxial connector capable of being plugged and unplugged for multiple times.

In order to achieve the purpose, the invention can be realized by adopting the following technical scheme: a coaxial connector comprises an insulating body, a central conductive terminal and a cylindrical metal shell, wherein the central conductive terminal is arranged on the insulating body, the central conductive terminal comprises a fixed part fixed on the insulating body, a contact part extending forwards along the fixed part and exposed out of the front end face of the insulating body, and a welding part extending backwards along the fixed part, the metal shell comprises a base part coated outside the insulating body and a cylindrical part which is positioned at the front end of the base part and forms an accommodating cavity with the contact part, the coaxial connector further comprises an auxiliary metal shell coated outside the metal shell, the cylindrical part of the metal shell is provided with a through hole, and the auxiliary metal shell is provided with a butting part which penetrates through the through hole to enter the accommodating cavity.

Further, a pair of through holes is formed in the two lateral sides of the cylindrical portion, and the pair of abutting portions is formed in the auxiliary metal shell.

Further, the sub-metal shell has better wear resistance than the metal shell.

Further, the auxiliary metal shell has higher conductivity than the metal shell.

Further, the metal shell is made of stainless steel, and the auxiliary metal shell is made of titanium-copper alloy.

Furthermore, the abutting part is an elastic abutting arm.

Furthermore, the auxiliary metal shell comprises an upper wall positioned at the upper end of the metal shell and a pair of side walls respectively positioned at two sides of the metal shell, and the abutting part is formed on the side walls.

Furthermore, welding sheets are arranged on two sides of the base, and welding feet which are positioned on the side walls and are positioned at the front ends of the welding sheets are arranged on the auxiliary metal shell.

Further, the coaxial connector is in butt joint with a butt-joint connector, the butt-joint connector comprises a body, a butt-joint terminal fixed at the insertion end of the body and a shell sleeved by the body, the body is cylindrical, the outer diameter of the body is 3 mm, the outer diameter of the shell is smaller than 3 mm, the outer diameter of an insertion port arranged on the metal shell is 3 mm, the side length of the butt-joint end of the auxiliary metal shell is also 3 mm, and when the coaxial connector is in butt joint with the butt-joint connector, the body is stopped at the butt-joint end of the auxiliary metal shell.

Further, the total length of the coaxial connector is 10 mm, the total length of the butting connector is 12 mm, and when the butting connector is matched with the coaxial connector, the matching total length is 17 mm.

Compared with the prior art, the butting connector has the advantages that the butting part which is butted with the shell of the butting connector is arranged on the auxiliary metal shell which has better electrical performance than the metal shell, so that the butting part is more wear-resistant, can bear multiple plugging and unplugging, and can ensure the strength of the metal shell.

[ description of the drawings ]

Fig. 1 is a perspective view of a coaxial connector of the coaxial connector assembly of the present invention when mated with a mating connector.

Fig. 2 is a view of fig. 1 viewed from another direction.

Fig. 3 is a perspective view of the coaxial connector assembly of the present invention when the coaxial connector is unmated from the mating connector.

Fig. 4 is a view of fig. 3 viewed from another direction.

Fig. 5 is an exploded perspective view of the coaxial connector of the present invention.

Fig. 6 is a sectional view taken along line a-a of fig. 1.

[ description of main reference symbols ]

Coaxial connector 100 insulation body 1

Butt joint part 11 holding groove 12

The rear end portion 13 catches the groove 131

Contact part 21 of central conductive terminal 2

Fixing part 22 and welding part 23

Metal housing 3 accommodating cavity 30

Cylindrical portion 32 of plug port 31

Base 33 of through hole 321

Clamping arm 331 welding piece 332

Upper wall 41 of sub-metal case 4

Sidewall 42 through slot 421

The abutting portion 422 abuts against the end 4221

Solder feet 423 mate with connector 200

Body 201 cable 202

Housing 203 latch groove 2031

Butt terminal 204 coaxial connector assembly 300

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

[ detailed description ] embodiments

Hereinafter, a specific embodiment of the coaxial connector of the present invention will be described with reference to fig. 1 to 6. The coaxial connector assembly 300 includes the coaxial connector 100 and the mating connector 200 mated therewith. The plug end of the coaxial connector 100 and the mating connector is the front end.

Referring to fig. 1 to 6, the coaxial connector 100 includes a cylindrical insulating housing 1, a central conductive terminal 2 disposed on the insulating housing 1, a metal shell 3 covering the insulating housing 1, and a sub-metal shell 4 partially covering the metal shell 3.

Referring to fig. 5 and 6, the insulating body 1 is cylindrical. The insulation body 1 comprises a butt joint part 11 positioned at the front end, a containing groove 12 penetrating through the center of the insulation body 1 from front to back, and a rear end part 13 with the outer diameter larger than that of the butt joint part 11. A pair of holding grooves 131 are concavely arranged on two sides of the rear end part 13.

Referring to fig. 5 to fig. 6, the central conductive terminal 2 is inserted and fixed in the receiving slot 12. The central conductive terminal 2 includes a fixing portion 22 inserted and fixed in the receiving slot 12, a contact portion 21 extending forward along the fixing portion 12 and exposed from the front end surface of the insulating body 1, and a soldering portion 23 extending backward from the fixing portion 22.

Referring to fig. 1 to 6, the metal housing 3 is provided with a receiving cavity 30 formed between the contact portion 21 and the metal housing. The metal shell 3 is cylindrical. The front end of the metal shell 3 is provided with a plug port 31. The metal case 3 includes a base portion 33 covering the exterior of the insulating body 1, and a cylindrical portion 32 located at a front end of the base portion 33 and forming the housing cavity 30 with the contact portion 21. A pair of through holes 321 are opened at both sides of the cylindrical portion 32. In other embodiments, only 1 through hole 321 may be provided. The two sides of the base 33 are provided with a retaining wall 331 for supporting the retaining groove 131 and a welding sheet 332 extending from the bottom end of the base 33 to the two sides and welded to a circuit board. In the present embodiment, the metal case 3 is made of a stainless steel material.

Referring to fig. 1 to 6, the sub-metal housing 4 is rectangular. The secondary metal shell 4 has better wear resistance and higher conductivity than the metal shell 3. In the present embodiment, the sub-metal case 4 is made of a titanium-copper alloy. The butt end of the secondary metal shell 4 is flush with the plug port 31 provided in the metal shell 3. The sub-metal shell 4 includes an upper wall 41 at the upper end of the metal shell 3 and side walls 32 extending vertically downward along both sides of the upper wall 41 and located at both sides of the metal shell 3. A through groove 421 is opened at the position of the side wall 32 corresponding to the through hole 321. The front end of the through groove 421 extends backwards to form an elastic abutting portion 422 that passes through the through hole 321 and extends into the accommodating cavity 30. In other embodiments, the supporting portion 422 is a convex hull protruding toward the receiving cavity 30, and the convex hull supports against an outer wall of the mating connector. In this embodiment, the abutting portion 422 is an elastic abutting arm. The free end of the abutting portion 422 is defined as an abutting end 4221. The front end and the rear end of the side wall are respectively provided with a welding leg 423 welded on the circuit board in an extending way towards two sides. The secondary metal shell 4 is sleeved on the metal shell 3 and located in front of the welding sheet 332. When the coaxial connector is butted with a butting connector, the welding feet 423 of the secondary metal shell 4 are positioned in front of the welding sheets 332 of the metal shell 3, so that the whole metal shell 3 is not easy to warp and is more stable during butting. The through hole 321 may be formed in a size that only the abutting portion 422 extends into, and the through hole 321 may be formed in a size similar to that of the abutting portion 422, but in order to take the strength of the metal shell 3 into consideration, it is not recommended to form the through hole to be large.

Referring to fig. 1 to 4, the docking connector 200 includes a body 201, a docking terminal 204 fixed at a front end of the body 201, and a housing 203 sleeved by the body 201. A cable 202 is inserted and fixed at one end of the body 201 far away from the insertion end. The insertion end of the housing 203 is concavely provided with an annular locking groove 2031. The body 201 is cylindrical. The outer diameter of the body 201 is 3 mm. The outer diameter of the housing is less than 3 mm. The outer diameter of the insertion port 31 of the metal shell 3 is 3 mm, and the side length of the butt joint end of the auxiliary metal shell 4 is also 3 mm. The total length of the coaxial connector 100 is 10 mm, and the total length of the mating connector 200 is 12 mm.

When the coaxial connector 100 is mated with the mating connector 200, the total length of the coaxial connector assembly 300 is 17 mm. In this process, the housing 203 of the mating connector 200 extends into the receiving cavity 30 until the abutting end 4221 of the abutting portion 422 abuts against the locking groove 2031, and the engagement between the two is completed. At this time, the main body 201 is stopped at the butt end of the secondary metal shell 4. Because the metal shell 3 is made of stainless steel, the auxiliary metal shell 4 is made of titanium copper alloy, and the electrical performance of the auxiliary metal shell 4 is better than that of the metal shell 3. The abutting portion 422 extends from the secondary metal shell 4 into the receiving cavity 30 of the metal shell 3 and abuts against the shell 203 of the mating connector 200 for grounding fixation. Since the abutting portion 422 is a part of the secondary metal housing 4, the through hole 321 formed in the metal housing 3 may be set to allow only the abutting portion 422 to pass through, and the size of the through hole 321 does not need to be set according to the length of the abutting portion 422. This ensures the strength of the metal shell 3. The 422 position of the abutting part is made of titanium copper alloy, so that the coaxial connector 100 can bear multiple plugging and unplugging, and the service life of the coaxial connector is ensured.

The above description is only a part of the embodiments of the present invention, and not all embodiments, and any equivalent variations of the technical solutions of the present invention, which are made by those skilled in the art through reading the present specification, are covered by the claims of the present invention.

Claims

1. A coaxial connector comprises an insulating body, a central conductive terminal arranged on the insulating body and a cylindrical metal shell, wherein the central conductive terminal comprises a fixed part fixed on the insulating body, a contact part extending forwards along the fixed part and exposing the front end face of the insulating body, and a welding part extending backwards along the fixed part, the metal shell comprises a base part coated outside the insulating body and a cylindrical part located at the front end of the base part and forming an accommodating cavity between the contact part, and the coaxial connector is characterized in that: the coaxial connector further comprises an auxiliary metal shell coated outside the metal shell, a through hole is formed in the cylindrical portion of the metal shell, the auxiliary metal shell is provided with a supporting portion penetrating through the through hole to enter the accommodating cavity, and the auxiliary metal shell has better wear resistance than the metal shell.

2. The coaxial connector of claim 1, wherein: the pair of through holes is formed in the two transverse sides of the cylindrical portion, and the pair of abutting portions is formed in the auxiliary metal shell.

3. The coaxial connector of claim 1, wherein: the auxiliary metal shell has higher conductivity than the metal shell.

4. The coaxial connector of claim 1, wherein: the metal shell is made of stainless steel, and the auxiliary metal shell is made of titanium-copper alloy.

5. The coaxial connector of claim 1, wherein: the propping part is an elastic propping arm.

6. The coaxial connector of claim 1, wherein: the auxiliary metal shell comprises an upper wall positioned at the upper end of the metal shell and a pair of side walls respectively positioned at two sides of the metal shell, and the abutting part is formed on the side walls.

7. The coaxial connector of claim 6, wherein: welding sheets are arranged on two sides of the base, and welding feet which are positioned on the side walls and are positioned at the front ends of the welding sheets are arranged on the auxiliary metal shell.

8. The coaxial connector of claim 1, wherein: the coaxial connector is in butt joint with a butt-joint connector, the butt-joint connector comprises a body, a butt-joint terminal fixedly held at a plug-in end of the body and a shell sleeved by the body, the body is cylindrical, the outer diameter of the body is 3 mm, the outer diameter of the shell is smaller than 3 mm, the outer diameter of a plug-in port arranged on the metal shell is 3 mm, the side length of a butt-joint end of the auxiliary metal shell is 3 mm, and when the coaxial connector is in butt joint with the butt-joint connector, the body is stopped at the butt-joint end of the auxiliary metal shell.

9. The coaxial connector of claim 8, wherein: the total length of the coaxial connector is 10 mm, the total length of the butting connector is 12 mm, and when the butting connector is matched with the coaxial connector, the matching total length is 17 mm.