阅读说明：本技术 一种新型毫米波射频同轴连接器及其连接电缆的方法 (Novel millimeter wave radio frequency coaxial connector and method for connecting cable by using same ) 是由 冯永芳 黄森 沈斌 于 2021-07-23 设计创作，主要内容包括：本发明公开了射频同轴连接器技术领域的一种新型毫米波射频同轴连接器及其连接电缆的方法。毫米波射频同轴连接器包括：外导体,所述外导体的一端设有台阶孔,所述台阶孔内设有台阶面和第一环形槽；套筒,所述套筒包括通孔,所述套筒的一个端面设有倒刺,另一个端面贴合在所述台阶面上；所述套筒的外圆周与所述台阶孔间隙配合；衬套,所述衬套的外圆周与所述台阶孔过盈配合,所述衬套包括穿线孔,所述穿线孔内设有第二环形槽；实现了射频电缆组件在毫米波频段下具有优越的弯曲性能。(The invention discloses a novel millimeter wave radio frequency coaxial connector and a method for connecting a cable by the same, and belongs to the technical field of radio frequency coaxial connectors. The millimeter wave radio frequency coaxial connector includes: the outer conductor is provided with a step hole at one end, and a step surface and a first annular groove are arranged in the step hole; the sleeve comprises a through hole, one end face of the sleeve is provided with a barb, and the other end face of the sleeve is attached to the step face; the outer circumference of the sleeve is in clearance fit with the stepped hole; the outer circumference of the bushing is in interference fit with the stepped hole, the bushing comprises a threading hole, and a second annular groove is formed in the threading hole; the radio frequency cable assembly has excellent bending performance under the millimeter wave frequency band.)

1. A millimeter wave radio frequency coaxial connector, characterized by, includes:

the cable comprises an outer conductor (14), wherein one end of the outer conductor (14) is provided with a step hole (141), and a step surface (142) and a first annular groove (143) are arranged in the step hole (141);

the sleeve (4) comprises a through hole (42), one end face of the sleeve (4) is provided with a barb (41), and the other end face of the sleeve (4) is attached to the step face (142); the outer circumference of the sleeve (4) is in clearance fit with the stepped hole (141);

the bushing (5), the outer circumference of bushing (5) with step hole (141) interference fit, bushing (5) are including through wires hole (52), be equipped with second ring channel (53) in through wires hole (52).

2. The millimeter wave radio frequency coaxial connector according to claim 1, wherein the outer circumferential surface of the bushing (5) is provided with a straight thread (51) structure.

3. The millimeter wave radio frequency coaxial connector according to claim 1, wherein a support medium (15) is mounted at the other end of the outer conductor (14), and the pin contact (2) is fixed on the outer conductor (14) through the support medium (15).

4. The millimeter wave radio frequency coaxial connector according to claim 3, wherein a dielectric spacer (3) is mounted between the pin contact (2) and the sleeve (4).

5. The millimeter wave radio frequency coaxial connector according to claim 1, wherein a retainer ring (13) is mounted on an outer circumference of the outer conductor (14), and the threaded sleeve (11) is mounted on the outer conductor (14) through the retainer ring (13).

6. The millimeter wave radio frequency coaxial connector according to claim 5, wherein an O-ring (12) is provided between the outer conductor (14) and the threaded sleeve (11).

7. A method for connecting cables by using the millimeter wave radio frequency coaxial connector as claimed in any one of claims 1 to 6, which is characterized by comprising the following steps:

the cable (6) passes through the threading hole (52) of the bushing (5), and the outer sheath of the cable (6) is in clearance fit with the threading hole (52);

inserting barbs (41) of the sleeve (4) between an insulating medium of the cable (6) and the shielding layer (61), and then installing the sleeve (4) in a stepped hole (141) of the outer conductor (14): the through hole (42) of the sleeve (4) is in interference fit with the insulating medium of the cable (6), and the end face of the insulating medium of the cable (6) is flush with the end face of the sleeve (4) attached to the step face (142) and is completely contacted with the step face (142) of the outer conductor (14);

installing a bushing (5) within a stepped bore (141) of an outer conductor (14): the outer circumference of the bushing (5) is in interference fit with the stepped hole (141), and the shielding layer (61) of the cable (6) is positioned between the sleeve (4) and the bushing (5) and is kept in close contact with the sleeve (4) and the bushing (5);

and a first annular groove (143) in the stepped hole (141) and a second annular groove (53) in the threading hole (52) are encapsulated.

Technical Field

The invention belongs to the technical field of radio frequency coaxial connectors, and particularly relates to a novel millimeter wave radio frequency coaxial connector and a method for connecting a cable by using the same.

Background

The mode that the radio frequency coaxial connector that is widely used at present connects the cable shielding layer mainly has two kinds of forms of crimping and welding, the welding form is mainly used for the connection of coaxial cable and radio frequency connector above 6GHz, it is stable to have performance, the frequency range of use is wide, but the high bending performance that influences the cable assembly directly of tin climbing caused by welding; the crimping mode is only used for radio frequency cable components below 6GHz, standard crimping jaws or specified crimping dies are adopted for crimping, the operation is convenient, the use is wide, but the use frequency range is low, and the increasingly improved performance index requirements of the cable components cannot be met.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the novel millimeter wave radio frequency coaxial connector and the method for connecting the cable, so that the radio frequency cable assembly has excellent bending performance in a millimeter wave frequency band.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

in a first aspect, a millimeter wave radio frequency coaxial connector is provided, including: the outer conductor is provided with a step hole at one end, and a step surface and a first annular groove are arranged in the step hole; the sleeve comprises a through hole, one end face of the sleeve is provided with a barb, and the other end face of the sleeve is attached to the step face; the outer circumference of the sleeve is in clearance fit with the stepped hole; the bush, the outer circumference of bush with step hole interference fit, the bush includes the through wires hole, be equipped with the second ring channel in the through wires hole.

Further, the outer circumferential surface of the bushing is provided with a straight grain structure.

Furthermore, a supporting medium is installed at the other end of the outer conductor, and the contact pin contact piece is fixed on the outer conductor through the supporting medium.

Further, a dielectric gasket is installed between the pin contact and the sleeve.

Furthermore, a retainer ring is installed on the outer circumference of the outer conductor, and the threaded sleeve is installed on the outer conductor through the retainer ring.

Further, an O-shaped ring is arranged between the outer conductor and the thread sleeve.

In a second aspect, there is provided a method for connecting cables by using the millimeter wave radio frequency coaxial connector of the first aspect, including: the cable penetrates through the threading hole of the bushing, and the outer sheath of the cable is in clearance fit with the threading hole; insert the barb of sleeve between insulating medium and the shielding layer of cable, then install the sleeve in the step hole of outer conductor: the through hole of the sleeve is in interference fit with the insulating medium of the cable, and the end face of the insulating medium of the cable is flush with the end face of the sleeve, which is attached to the step face, and is completely contacted with the step face of the outer conductor; installing the bushing in the stepped bore of the outer conductor: the outer circumference of the bushing is in interference fit with the stepped hole, and the shielding layer of the cable is positioned between the sleeve and the bushing and keeps close contact with the sleeve and the bushing; and encapsulating the first annular groove in the step hole and the second annular groove in the threading hole.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the cable shielding layer and the connector are connected in a welding-free manner, the cable shielding layer is fixed in an extrusion manner through the sleeve and the bushing, the tail part of the cable is ensured to be stable in an embedding manner by means of the first annular groove and the second annular groove, and the radio frequency cable assembly has excellent bending performance in a millimeter wave frequency band.

Drawings

Fig. 1 is a schematic structural diagram of a novel millimeter wave radio frequency coaxial connector according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the outer conductor assembly of FIG. 1;

FIG. 3 is a perspective view of the sleeve of FIG. 1;

FIG. 4 is a perspective view of the bushing of FIG. 1;

fig. 5 is a schematic structural diagram of a novel millimeter wave radio frequency coaxial connector connecting cable according to an embodiment of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The first embodiment is as follows:

as shown in fig. 1 to 5, a millimeter wave radio frequency coaxial connector includes an outer conductor assembly, a pin contact 2, a dielectric spacer 3, a sleeve 4 and a bushing 5, where the outer conductor assembly includes a threaded sleeve 11, an O-ring 12, a retainer ring 13, an outer conductor 14 and a supporting medium 15, which are assembled together, and a step hole 141, a step surface 142 and a first annular groove 143 are provided at a tail of the outer conductor 14.

In this embodiment, a step hole 141 is provided at one end of the outer conductor 14, and a step surface 142 and a first annular groove 143 for potting glue are provided in the step hole 141; the sleeve 4 comprises a through hole 42, one end face of the sleeve 4 is provided with a barb 41, and the other end face is attached to the step face 142; the outer circumference of the sleeve 4 is in clearance fit with the stepped hole 141; the outer circumference of the bushing 5 is in interference fit with the stepped hole 141, the bushing 5 comprises a threading hole 52, and a second annular groove 53 for encapsulating glue is arranged in the threading hole 52.

The outer circumferential surface of the bushing 5 is provided with a straight grain 51 structure along the axial direction of the bushing 5, and the straight grain 51 structure is used for being in interference fit with the stepped hole 141 and is convenient to mount on the premise of ensuring the fit effect.

The other end of the outer conductor 14 is provided with a supporting medium 15, and the pin contact 2 is fixed on the outer conductor 14 through the supporting medium 15; a dielectric spacer 3 is mounted between the pin contact 2 and the sleeve 4. The sleeve 4 is positioned and assembled by a stepped surface 142 on the outer conductor 14 and the bushing 5 is fitted by interference press fit with a stepped hole 141 on the outer conductor 14.

A retainer 13 is mounted on the outer circumference of the outer conductor 14, and the screw sleeve 11 is mounted on the outer conductor 14 through the retainer 13. An O-ring 12 for sealing is provided between the outer conductor 14 and the screw sleeve 11.

The millimeter wave radio frequency coaxial connector is simple in structure, convenient to use and capable of achieving batch production.

Example two:

based on the millimeter wave radio frequency coaxial connector in the first embodiment, the present embodiment provides a method for connecting a cable by using the millimeter wave radio frequency coaxial connector in the first embodiment, including: the cable 6 passes through the threading hole 52 of the bushing 5, and the outer sheath of the cable 6 is in clearance fit with the threading hole 52; barbs 41 of sleeve 4 are inserted between the insulating medium of cable 6 and shield 61, and sleeve 4 is then fitted into stepped bore 141 of outer conductor 14: the through hole 42 of the sleeve 4 is in interference fit with the insulating medium of the cable 6, and the end face of the insulating medium of the cable 6 is flush with the end face of the sleeve 4 attached to the step face 142 and is completely contacted with the step face 142 of the outer conductor 14; mounting the bushing 5 within the stepped bore 141 of the outer conductor 14: the outer circumference of the bush 5 is in interference fit with the stepped hole 141, and the shielding layer 61 of the cable 6 is positioned between the sleeve 4 and the bush 5 and is kept in close contact with the sleeve 4 and the bush 5; the first annular groove 143 in the stepped hole 141 and the second annular groove 53 in the threading hole 52 are potted.

As shown in fig. 5, the dielectric gasket 3 is assembled at the root of the core wire 62 of the cable 6, the pin contact 2 is connected with the core wire of the cable 6 by welding, the sleeve 4 is assembled on the insulating medium of the adaptive cable 6, the barb 41 structure thereof is inserted between the insulating medium of the cable 6 and the shielding layer 61, the middle through hole 42 structure is in interference fit with the insulating medium of the cable 6, the front end surface of the sleeve 4 is kept flush with the end surface of the insulating medium of the cable 6 and is in complete contact with the step surface 142 of the outer conductor 14, the straight grain 51 structure of the outer circumference of the bushing 5 is in interference fit with the step hole 141 of the outer conductor 14 of the connector, the middle threading hole 52 is in clearance fit with the outer sheath of the cable 6, the shielding layer 61 of the cable 6 is arranged between the sleeve 4 and the bushing 5, the reliable contact between the shielding layer 61 and the connector is ensured by the axial positive pressure between the two, and finally the cable 6 and the connector are completely fixed by potting, the first annular groove 143 of the outer conductor 14 and the second annular groove 53 of the bushing 5 are configured to fix the connector tail potting adhesive 63.

Cable shielding layer and connector adopt exempt from to weld formula connected mode in this embodiment, and the extrusion mode through sleeve and bush is fixed cable shielding layer, and the afterbody guarantees the stability of cable with the help of first ring channel, the mode that the second ring channel adopted the embedment, has realized that radio frequency cable assembly has superior bending property under the millimeter wave frequency channel.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.