CN114696121A

CN114696121A - Coaxial cable connector

Info

Publication number: CN114696121A
Application number: CN202011560796.8A
Authority: CN
Inventors: 邬彬; 尹绪引; 赖小林
Original assignee: Shenzhen Electric Connector Technology Co Ltd
Current assignee: Shenzhen Electric Connector Technology Co Ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2022-07-01

Abstract

The invention discloses a coaxial cable connector, which is electrically connected with a coaxial cable, and comprises: a coaxial cable (400) having a core wire (420) and an outer conductor layer (410) disposed around the core wire (420); an outer housing (310) electrically connected to an outer conductor layer (410) of the coaxial cable (400); an insulating body (320) fixed within the outer housing (310); and an inner terminal (330) electrically connected to the core wire (420) and fixed in the insulating body (320). Compared with the prior art, can shield the front end of whole heart yearn, shield effectually, prevent that the signal from revealing.

Description

Coaxial cable connector

Technical Field

The invention relates to the technical field of electric connectors, in particular to a coaxial cable connector.

Background

Prior art 1 (publication No. CN110416839) discloses a micro coaxial connector, in which an extending direction of a coaxial cable 200 connected in an assembling process is substantially perpendicular to a mating direction of an opposite connector, the coaxial cable has a core wire 203 and an outer conductor layer 201 disposed around the core wire, a front end of the core wire 203 is not covered by the outer conductor layer 201, and referring to fig. 1 to 7 of the prior art 1, the coaxial connector includes a housing 120, an insulating body 140, and a plug body 160, the housing 120 includes a joint portion 121, a fixing portion 123, a buckling portion 124, and a wire clamp portion 125, the wire clamp portion 125 is fixedly connected to the outer conductor layer 201 of the coaxial cable 200, the buckling portion 124 is fixedly connected to the insulating body 140, a front end of the core wire 203 is electrically connected to the plug body 160, the insulating body 140 includes a convex plate 143, the joint portion 121 is provided with a concave portion 121a, the projection 143 is press-fitted into a recess 121a provided on the inner peripheral surface of the joint 121, and the insulating body 140 is prevented from falling off from the housing 120.

Has the following defects: as shown in fig. 7, the front end portion of the core wire 203 located between the wire clamping portion 125 and the buckling portion 124 is not completely covered by the housing 120, and signal leakage occurs, which affects the shielding effect; the portion of the plug 160 between the engaging portion 121 and the engaging portion 124 is not completely covered by the housing 120, and signal leakage may occur, which may also affect the shielding effect; referring again to fig. 8, the engaging portion 121 is provided with a recess 121a, and the recess 121a is a through groove, which may cause signal leakage from the recess 121a, and also may not achieve the optimal shielding effect.

In view of the above disadvantages, there is a need to develop a coaxial cable connector with low signal leakage and excellent shielding effect.

Disclosure of Invention

An object of the embodiments of the present application is to provide a coaxial cable connector with low signal leakage and excellent shielding effect.

In order to achieve the purpose, the invention adopts the technical scheme that:

a coaxial cable connector has a core wire and an outer conductor layer disposed around the core wire; an outer housing electrically connected to an outer conductor layer of the coaxial cable; an insulator body secured within the outer housing; an internal terminal electrically connected to the core wire and fixed in the insulating body; a conductive member fixably electrically connected to the outer housing; the outer housing includes a support portion extending along the coaxial cable and the insulating body and supporting and holding the coaxial cable and the insulating body, a cylindrical portion bent and extending perpendicularly from one end of the support portion and adapted to be joined to a mating connector, and a joint portion crimped from the support portion toward the coaxial cable and engaged with the outer conductor layer to form an electrical connection; one end of the conductive member extends at least to a position covering the core wire in the axial direction of the coaxial cable, the other end of the conductive member extends at least to a position where the conductive member can hold the insulating body together with the support portion in the axial direction of the coaxial cable, the other end of the conductive member, which is located opposite to the direction in which the core wire is located, extends in the axial direction of the coaxial cable to a position where the conductive member is tangent to the cylindrical portion, the conductive member is engaged with the outer housing by an engagement structure, and the insulating body has a base portion and a protruding portion extending from the base portion; the conductive member is provided with a cover-shaped part which surrounds the connection part of the core wire and the internal terminal, one end of the cover-shaped part extends to the position of the core wire which is covered on the axial direction of the coaxial cable, one part of the cover-shaped part is covered on the protruding part, the conductive member is of a cover-shaped structure with an n-shaped section and is covered with the supporting part of the external shell to form a first accommodating groove, the area between the front end of the core wire and the front end of the external conductor layer is completely covered in the first accommodating groove, the external shell further comprises fixing parts which are clamped on two sides of the protruding part, the bottom end of each fixing part is provided with a first groove, the corresponding position of the protruding part of the insulating body and the first groove is provided with a first convex part, the first groove is mutually clamped with the first convex part to limit the insulating body, and the cylindrical part is provided with a second convex part, the second convex part is a seamless bulge formed by a puncture process from the inner wall surface of the cylindrical part, a second groove is formed in the corresponding position of the base body part of the insulating body, the second convex part is clamped with the second groove, at least one convex rib is arranged on the end surface of the convex part of the insulating body, the height of the convex rib is larger than that of the fixing part, the conductive member is pressed against the convex rib and forms clamping fixation on the insulating body together with the supporting part, the conductive member and the external shell are fixed together through ultrasonic welding, the conductive member is provided with a third groove, the external shell is provided with a third convex part, and the third convex part is embedded with the third groove.

The invention has the beneficial effects that:

1. through the combined action of conductive component and outside casing to the front end complete cladding of heart yearn, realize shielding the front end of whole heart yearn, compare with prior art, can shield the front end of whole heart yearn, signal leakage is low, shielding effect is good.

2. The inner terminal is arranged at the position between the cylindrical part and the joint part, and can be completely covered by the combined action of the conductive member and the outer shell.

3. The second convex part with the second recess block makes insulator further stably fix in the casing, compares with prior art, simplifies the structure, and signal leakage is low, and shielding effect is good.

Drawings

FIG. 1 is a perspective view of an embodiment of the present invention;

FIG. 2 is an exploded view of an embodiment of the present invention;

FIG. 3 is a perspective view of an outer housing of an embodiment of the present invention;

FIG. 4 is a perspective view of an outer housing mated with a conductive member in accordance with an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the outer housing, conductive member and coaxial cable mating of an embodiment of the present invention;

FIG. 6 is a schematic structural position diagram of the cylindrical portion and the fixing portion of the outer housing according to the embodiment of the present invention;

fig. 7 is a perspective view of prior art 1;

fig. 8 is an exploded view of prior art 1.

Description of the symbols:

310. an outer housing; 311. a support portion; 312. a cylindrical portion; 313. a joint portion; 314. a first accommodating groove; 315. a fixed part; 316. a first groove; 317. a second convex portion; 318. a third convex portion;

320. an insulating body; 321. a base portion; 322. a protruding portion; 323. a first convex portion; 324. a second groove; 325. a rib;

330. an internal terminal;

340. a conductive member; 341. a cap portion; 342. a third groove;

400. a coaxial cable; 410. an outer conductor layer; 420. a core wire; 420a, the front end of the core wire;

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, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

As shown in fig. 1 to 6, the embodiment of the present application:

a coaxial cable connector is electrically connected to a coaxial cable 400, wherein the coaxial cable 400 has a core wire 420 and an outer conductor layer 410 disposed around the core wire, and a tip 420a of the core wire 420 is not covered with the outer conductor layer 410.

As shown in fig. 1 and 2, includes an outer case 310, an insulating body 320, an inner terminal 330, and a conductive member 340.

As shown in fig. 2, the inner terminal 330 is made of metal, preferably copper, and has a conductive capability, and the inner terminal 330 is soldered to the core wire 420 of the coaxial cable 400 for conduction. The inner terminal 330 is fixed in the insulative housing 320, and the inner terminal 330 is separated from the outer housing 310 by the insulative housing 320, so that the inner terminal 330 is not in contact with the outer housing 310 for conduction.

As shown in fig. 2, the insulating body 320 is made of an insulating plastic material, the insulating body is made of resin, such as liquid crystal polymer, the insulating body 320 is fixedly connected to the outer housing 310, and the insulating body 320 is fixed in the outer housing 310.

As shown in fig. 3, the outer housing 310 is made of metal, preferably copper, and is formed by stamping a metal plate, and has a conductive capability, and is electrically connected to the outer conductor layer 410 of the coaxial cable 400.

As shown in fig. 2, the conductive member 340 is made of metal, preferably copper, and is electrically connected to the outer housing 310.

As shown in fig. 1 to 6, the outer case 310 includes a support portion 311 extending along the coaxial cable 400 and the insulating main body 320 and supporting and holding both the portions, a cylindrical portion 312 bent and extending perpendicularly from one end of the support portion 311 and formed to be joined to a mating connector, and a joint portion 313 crimped from the support portion 311 toward the coaxial cable 400 and engaged with the outer conductor layer 410 to form an electrical connection, and one end of the conductive member 340 extends at least to a position covering the core wire 420 in the axial direction of the coaxial cable 400, and the other end thereof extends at least to a position capable of holding the insulating main body 320 together with the support portion 311 in the axial direction of the coaxial cable 400. The front end 420a of the core wire is completely coated by the combined action of the conductive member 340 and the outer shell 310, so that the front end of the whole core wire is shielded.

In the prior art 1, as shown in fig. 7, the portion of the plug 160 located between the engagement portion 121 and the engagement portion 124 is not completely covered by the housing 120, which results in poor shielding effect and signal leakage. In order to solve the above problem, as shown in fig. 5, the other end of the conductive member 340, which is located opposite to the direction of the core wire 420, extends in the axial direction of the coaxial cable 400 to a position tangent to the cylindrical portion 312. In this way, the inner terminal 330 can be completely covered by the conductive member 340 and the outer housing 310 at the portion between the cylindrical portion 312 and the engagement portion 313, and thus, compared to the prior art 1, the signal leakage is low and the shielding effect is excellent.

Preferably, the conductive member 340 is engaged with the outer case 310 by an engaging structure. The conductive member 340 is stably fixed to the outer case 310, and the structure is simple.

Preferably, as shown in fig. 2 and 5, the insulating body 320 has a base 321, and a protrusion 322 extending from the base 321; the conductive member 340 has a cap 341 surrounding the connection portion of the core wire 420 and the inner terminal 330 and having one end extending to a position covering the core wire 420 in the axial direction of the coaxial cable 400, and a part of the cap 341 is covered on the protrusion 322. The cap 341 and the outer case 310 act together to shield the tip 420a of the core wire 420 and the connection portion where the inner terminal 330 and the core wire 420 are connected, thereby reducing signal leakage and achieving an excellent shielding effect.

Preferably, as shown in fig. 2, 4 and 5, the conductive member 340 is a lid-shaped structure with an n-shaped cross section, and is covered with the supporting portion 311 of the outer casing 310 to form a first receiving groove 314, and an area between the front end 420a of the core wire 420 and the front end of the outer conductor layer 410 is completely covered in the first receiving groove 314. The first receiving groove 314 covers the front end 420a of the core wire and the connection portion where the inner terminal 330 and the core wire 420 are connected, and has low signal leakage, excellent shielding effect, and simple structure.

As shown in fig. 2 and 6, preferably, the external housing 310 further includes a fixing portion 315 clamped at two sides of the protruding portion 322, a first groove 316 is disposed at a bottom end of the fixing portion 315, a first protrusion 323 is disposed at a position of the protruding portion 322 of the insulating body 320 corresponding to the first groove 316, and the first groove 316 and the first protrusion 323 are engaged with each other to limit the insulating body 320. The first recess 316 and the first protrusion 323 are engaged with each other, so that the insulating housing is stably fixed in the outer housing 310, and the structure is simplified and the assembly is convenient.

In the prior art 1, as shown in fig. 8, the joint portion 121 is provided with a concave portion 121a, and the concave portion 121a is a through groove, so that a signal leakage problem from the concave portion 121a may occur, and in order to solve the above problem, as shown in fig. 2 and 6, the cylindrical portion 312 is provided with a second convex portion 317, the second convex portion 317 is a seamless projection formed by a piercing process from an inner wall surface of the cylindrical portion 312, a second groove 324 is provided at a corresponding position of the base portion 321 of the insulating body 320, and the second convex portion 317 is engaged with the second groove 324. The second convex portion 317 is engaged with the second concave groove 324, so that the insulating body is stably fixed in the housing, the structure is simplified, the concave portion 121a of the prior art 1 is omitted, and the signal is prevented from leaking from the concave portion 121a of the joint portion 121.

As shown in fig. 2 and 3, preferably, the conductive member 340 is provided with a third groove 342, the outer housing 310 is provided with a third protrusion 318, and the third protrusion 318 is engaged with the third groove 342, so that the conductive member 340 and the outer housing 310 are positioned and fixed together, and the structure is simplified and the assembly is convenient.

As shown in fig. 2, the conductive member 340 and the outer case 310 are preferably fixed together by ultrasonic welding. The ultrasonic welding enables the conductive member 340 and the outer shell 310 to be fixed together without a gap, so as to form a closed first accommodating groove 314, thereby improving the shielding effect, and the conductive member 340 and the outer shell 310 are fixed more firmly.

As shown in fig. 2, preferably, at least one rib 325 is disposed on an end surface of the protruding portion 322 of the insulating body 320, a height of the rib 325 is greater than a height of the fixing portion 315, and the conductive member 340 abuts against the rib 325 to form a clamping and fixing function with the supporting portion 311 for the insulating body 320. By pressing the conductive member 340 against the rib 325, the interference between the top surface of the entire insulating body 320 and the conductive member 340 can be avoided, thereby avoiding the influence on the ultrasonic welding due to the occurrence of a gap caused by too large interference after the conductive member and the outer conductor layer are covered.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express the 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. A coaxial cable connector electrically connected to a coaxial cable, comprising:

a coaxial cable (400) having a core wire (420) and an outer conductor layer (410) disposed around the core wire (420);

an outer housing (310) electrically connected to an outer conductor layer (410) of the coaxial cable (400);

an insulating body (320) fixed within the outer housing (310);

an inner terminal (330) electrically connected to the core wire (420) and fixed in the insulating body (320);

a conductive member (340) fixably electrically connected to the outer housing (310);

the outer housing (310) is provided with a support part (311) extending along the coaxial cable (400) and the insulating body (320) and supporting and holding the coaxial cable and the insulating body, a cylindrical part (312) which is formed by bending and extending perpendicularly from one end of the support part (311) and is used for being jointed with a counterpart connector, and a joint part (313) which is riveted from the support part (311) to the coaxial cable (400) and is clamped with the outer conductor layer (410) to form electric connection;

wherein one end of the conductive member (340) extends at least to a position covering the core wire (420) in the axial direction of the coaxial cable (400), and the other end thereof extends at least to a position where the insulating body (320) can be held together with the support portion (311) in the axial direction of the coaxial cable (400).

2. A coaxial cable connector according to claim 1, wherein: the other end of the conductive member (340) located opposite to the direction of the side where the core wire (420) is located extends in the axial direction of the coaxial cable (400) to a position that forms a tangent with the cylindrical portion (312).

3. A coaxial cable connector according to claim 1 or 2, wherein: the conductive member (340) is engaged with the outer case (310) through an engaging structure.

4. A coaxial cable connector according to claim 3, wherein: the insulating body (320) is provided with a base body part (321) and a protruding part (322) formed by extending from the base body part (321); the conductive member (340) has a cap-like portion (341) surrounding a connection portion of the core wire (420) and the inner terminal (330) and having one end extending to a position covering the core wire (420) in an axial direction of the coaxial cable (400), a part of the cap-like portion (341) being covered on the protrusion portion (322).

5. A coaxial cable connector according to claim 4, wherein: the conductive member (340) is a lid-shaped structure with an n-shaped cross section, and is covered with the supporting portion (311) of the external housing (310) to form a first accommodating groove (314), and an area between the front end of the core wire (420) and the front end of the outer conductor layer (410) is completely covered in the first accommodating groove (314).

6. A coaxial cable connector according to claim 4 or 5, wherein: the external shell (310) further comprises fixing portions (315) clamped on two sides of the protruding portion (322), a first groove (316) is formed in the bottom end of each fixing portion (315), a first protruding portion (323) is arranged on the corresponding position of the protruding portion (322) of the insulating body (320) and the corresponding position of the first groove (316), and the first groove (316) and the first protruding portion (323) are mutually clamped to limit the insulating body (320).

7. A coaxial cable connector according to claim 4 or 5, wherein: the cylindrical part (312) is provided with a second convex part (317), the second convex part (317) forms a seamless bulge from the inner wall surface of the cylindrical part (312) through a puncture process, a second groove (324) is arranged on the corresponding position of the base body part (321) of the insulating body (320), and the second convex part (317) is clamped with the second groove (324).

8. A coaxial cable connector according to claim 4 or 5, wherein: the end face of the protruding portion (322) of the insulating body (320) is provided with at least one protruding rib (325), the height of the protruding rib (325) is larger than that of the fixing portion (315), and the conductive member (340) abuts against the protruding rib (325) and forms clamping fixation on the insulating body (320) together with the supporting portion (311).

9. A coaxial cable connector according to claim 1 or 2, wherein: the conductive member (340) and the outer case (310) are fixed together by ultrasonic welding.

10. A coaxial cable connector according to claim 9, wherein: the conductive member (340) is provided with a third groove (342), the outer case (310) is provided with a third projection (318), and the third projection (318) is fitted into the third groove (342).