阅读说明：本技术 一种耐宽温毫米波射频同轴连接器 (Wide temperature resistant millimeter wave radio frequency coaxial connector ) 是由 党程云 张新生 李闫 康亚玲 齐乐 郝鑫鑫 武向文 于 2021-10-27 设计创作，主要内容包括：本发明提供了一种耐宽温毫米波射频同轴连接器,包括连接器主体、内导体、第二绝缘体、第二外导体及第三外导体,所述第二外导体为能够对电缆绝缘层进行抓持并固定的弹性卡紧结构,所述第二外导体外部通过所述第三外导体实现在所述连接器内的径向固定；所述第二绝缘体装配在电缆芯线上,且所述第二绝缘体位于所述电缆绝缘层和所述内导体尾端之间,所述内导体与所述电缆芯线焊接。本发明的连接器增加了连接器外导体与电缆绝缘层的连接,从而对电缆的绝缘层进行抓持固定,且整体简单可靠,装配操作容易,成本低,同时保证高低温环境中电缆绝缘层不出现伸长或收缩现象,使得连接器、电缆组件能够在超宽温环境中长时间稳定工作。(The invention provides a wide-temperature-resistant millimeter wave radio frequency coaxial connector which comprises a connector main body, an inner conductor, a second insulator, a second outer conductor and a third outer conductor, wherein the second outer conductor is an elastic clamping structure capable of clamping and fixing a cable insulating layer, and the outer part of the second outer conductor is radially fixed in the connector through the third outer conductor; the second insulator is assembled on the cable core wire, the second insulator is located between the cable insulation layer and the tail end of the inner conductor, and the inner conductor is welded with the cable core wire. The connector provided by the invention has the advantages that the connection between the outer conductor of the connector and the cable insulation layer is increased, so that the insulation layer of the cable is clamped and fixed, the whole connector is simple and reliable, the assembly operation is easy, the cost is low, and meanwhile, the cable insulation layer is prevented from extending or contracting in a high-temperature and low-temperature environment, so that the connector and the cable assembly can stably work for a long time in an ultra-wide temperature environment.)

1. The wide-temperature-resistant millimeter wave radio frequency coaxial connector is characterized by comprising a connector main body, an inner conductor (1), a second insulator (3), a second outer conductor (5) and a third outer conductor (6), wherein the inner conductor, the second insulator, the second outer conductor (5) and the third outer conductor (6) are arranged from inside to outside, the second outer conductor (5) is an elastic clamping structure capable of clamping and fixing a cable insulating layer (112), and the outer part of the second outer conductor (5) is radially fixed in the connector through the third outer conductor (6); the second insulator (3) is assembled on a cable core (111), the second insulator (3) is positioned between the cable insulation layer (112) and the tail end of the inner conductor (1), and the inner conductor (1) is welded with the cable core (111).

2. The broad temperature millimeter wave radio frequency coaxial connector according to claim 1, wherein the second outer conductor (5) grips the cable insulation layer (112) in the form of a resilient bidirectional staggered split groove.

3. The wide temperature resistant millimeter wave radio frequency coaxial connector according to claim 1, wherein the second outer conductor (5) grips the cable insulation layer (112) in a one-way expanding split slot form or a C-shaped form.

4. The broad temperature millimeter wave radio frequency coaxial connector according to claim 1, wherein the inner surface of the second outer conductor (5) is provided with one-way barbs (53).

5. The broad temperature millimeter wave radio frequency coaxial connector according to claim 4, wherein the one-way barbs (53) are a single row of barbs, a double row of barbs, or a plurality of rows of barbs; the one-way barbs (53) are continuous barbs or discontinuous barbs.

6. The broad temperature millimeter wave radio frequency coaxial connector according to claim 4, wherein the root of the one-way barb (53) is provided with an impedance compensation groove (54).

7. The broad temperature millimeter wave radio frequency coaxial connector according to claim 1, wherein the second insulator (3) structure is a hybrid structure of porous air and PEEK material.

8. The millimeter wave radio frequency coaxial connector according to claim 1, wherein the millimeter wave radio frequency coaxial connector further comprises a fourth outer conductor (7) and a first insulator (2), the fourth outer conductor (7) is welded with a cable shielding layer (113), and the front end of the inner conductor (1) is radially fixed in the connector through the first insulator (2).

9. The millimeter wave radio frequency coaxial connector according to claim 1, wherein the millimeter wave radio frequency coaxial connector further comprises a first outer conductor (4), the first outer conductor (4) is located outside the inner conductor (1), a first outer conductor step (41) is arranged on the first outer conductor (4), the second insulator (3) is embedded in the first outer conductor step (41), and the second insulator (3) is clamped between the first outer conductor (4) and the third outer conductor (6).

10. The wide temperature resistant millimeter wave radio frequency coaxial connector according to claim 1, wherein the operating temperature of the wide temperature resistant millimeter wave radio frequency coaxial connector can reach-150 ℃ to +165 ℃.

Technical Field

The invention belongs to the technical field of radio frequency signal transmission, and particularly relates to a wide-temperature-resistant millimeter wave radio frequency coaxial connector.

Background

The radio frequency coaxial connector and the cable assembly have the advantages of wide working frequency band, excellent electrical property, convenient installation and operation and the like and are widely applied to various fields of communication, aviation, aerospace, military weapons and the like. The working temperature range of the existing millimeter wave connector and cable assembly is basically-65 ℃ to +125 ℃, and the key problem is that the insulating layer of the cable can expand with heat and contract with cold under the condition of ultra-wide temperature, so that an air gap is generated at the joint of the connector and the cable, impedance is discontinuous, and interconnection is influenced.

Disclosure of Invention

The invention provides a wide-temperature-resistant millimeter wave radio frequency coaxial connector, which solves the problems that the insulation layer of a cable expands with heat and contracts with cold under the condition of ultra-wide temperature, so that an air gap is generated at the joint of the connector and the cable, impedance is discontinuous, and interconnection is influenced in the prior art.

Specifically, the invention is realized by adopting the following technical scheme:

the invention provides a wide-temperature-resistant millimeter wave radio frequency coaxial connector which comprises a connector main body, an inner conductor, a second insulator, a second outer conductor and a third outer conductor, wherein the inner conductor, the second insulator, the second outer conductor and the third outer conductor are arranged from inside to outside; the second insulator is assembled on the cable core wire, the second insulator is located between the cable insulation layer and the tail end of the inner conductor, and the inner conductor is welded with the cable core wire.

As a further illustration of the present invention, the second outer conductor is in the form of a resilient bidirectional staggered split to grip the cable insulation.

As a further illustration of the present invention, the second outer conductor is in the form of a one-way expanding split slot or a C-shaped form for gripping the cable insulation.

As a further illustration of the invention, the inner surface of the second outer conductor is provided with unidirectional barbs.

As a further illustration of the invention, the one-way barbs are single, double or multiple rows of barbs; the one-way barbs are continuous barbs or discontinuous barbs.

As a further explanation of the invention, the root of the one-way barb is provided with an impedance compensation groove.

As a further illustration of the present invention, the second insulator structure is a hybrid structure of porous air and PEEK materials.

As a further description of the present invention, the wide temperature resistant millimeter wave radio frequency coaxial connector further includes a fourth outer conductor and a first insulator, the fourth outer conductor is welded to the cable shielding layer, and the front end of the inner conductor is radially fixed in the connector through the first insulator.

As a further description of the present invention, the wide temperature resistant millimeter wave radio frequency coaxial connector further includes a first outer conductor, the first outer conductor is located outside the inner conductor, a first outer conductor step is disposed on the first outer conductor, the second insulator is embedded in the first outer conductor step, and the second insulator is clamped between the first outer conductor and the third outer conductor.

As a further explanation of the invention, the working temperature of the wide-temperature-resistant millimeter wave radio frequency coaxial connector can reach-150 ℃ to +165 ℃.

Compared with the prior art, the invention has the following beneficial technical effects:

the connector provided by the invention has the advantages that the connection between the outer conductor of the connector and the cable insulation layer is increased, so that the insulation layer of the cable is clamped and fixed, the whole connector is simple and reliable, the assembly operation is easy, the cost is low, and meanwhile, the cable insulation layer is prevented from extending or contracting in a high-temperature and low-temperature environment, so that the connector and the cable assembly can stably work for a long time in an ultra-wide temperature environment.

Drawings

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

Fig. 2 is a schematic structural diagram of a first outer conductor of the wide temperature resistant millimeter wave radio frequency coaxial connector according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second outer conductor of the wide temperature resistant millimeter wave radio frequency coaxial connector according to an embodiment of the present invention.

Fig. 4 is a schematic view of an overall structure of the broad temperature resistant millimeter wave radio frequency coaxial connector according to an embodiment of the present invention after being welded with a cable.

Description of the reference numerals

1-inner conductor, 101-welding wire hole, 2-first insulator, 3-second insulator, 4-first outer conductor, 41-first outer conductor step, 5-second outer conductor, 51-second outer conductor left end slot, 52-second outer conductor right end slot, 53-one-way barb, 54-impedance compensation groove, 6-third outer conductor, 7-fourth outer conductor, 8-cable core wire and inner conductor welding position point, 9-second inner conductor clamping cable insulation layer position point, 10-fourth outer conductor and cable shielding layer welding position point, 11-cable, 111-cable core wire, 112-cable insulation layer and 113-cable shielding layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The technical solution of the present invention will be explained with reference to specific embodiments.

As shown in fig. 1, a wide temperature resistant millimeter wave radio frequency coaxial connector is provided, which includes a connector main body, and an inner conductor 1, a second insulator 3, a second outer conductor 5, and a third outer conductor 6, which are arranged from inside to outside, wherein the second outer conductor 5 is an elastic clamping structure capable of gripping and fixing a cable insulation layer 112, and the outside of the second outer conductor 5 is radially fixed in the connector through the third outer conductor 6; the second insulator 3 is assembled on the cable core 111, and the second insulator 3 is located between the cable insulation layer 112 and the tail end of the inner conductor 1, and the inner conductor 1 is welded with the cable core 111.

The wide-temperature-resistant millimeter wave radio frequency coaxial connector provided by the invention is mainly redesigned from the structure of the existing connector, and the connection between the outer conductor of the connector and the cable insulation layer 112 is increased, so that the insulation layer of the cable is clamped and fixed, and the phenomenon of extension or contraction of the cable insulation layer 112 in a high-temperature and low-temperature environment is ensured.

Wherein, the left end of inner conductor 1 is the contact pin of pegging graft with standard connector, adopts pinhole complex mode to connect, and the right-hand member of inner conductor 1 is provided with bonding wire hole 101 of cable conductor 111 welded to make things convenient for inner conductor 1 to adopt welded mode to be connected with cable conductor 111.

In addition, when the inner conductor 1 is welded with the cable core 111, because the second insulator 3 is arranged between the right end of the inner conductor 1 and the cable core 111 for supporting, under the condition of ultra-wide temperature, the second insulator 3 can prevent the shrinkage of the inner conductor 1, and simultaneously block the cable insulating layer 112, so that the cable insulating layer 112 is prevented from growing out when being thermally expanded. The second insulator 3 is preferably made of a polyetheretherketone material; the structure of the second insulator 3 may be provided as a porous air and PEEK material mixed structure.

In an achievable manner, the second outer conductor 5 is in the form of a resilient bidirectional staggered split groove (as shown in fig. 3, including a second outer conductor left end split groove 51 and a second outer conductor right end split groove 52), so as to achieve a stable shrinkage clamping of the cable insulation layer 112; the second outer conductor 5 can also adopt a deformation form of an elastic bidirectional staggered split groove, such as a one-way opening expanding split groove form and a C-shaped form. The second outer conductor 5 is preferably machined from a metallic material.

In an achievable manner, as shown in fig. 3, the inner surface of the second outer conductor 5 is provided with one-way barbs 53, and when the second outer conductor 5 is contracted, the one-way barbs 53 are embedded in the cable insulation 112 to fix the cable insulation 112. The one-way barbs 53 may be single rows of barbs, double rows of barbs, or multiple rows of barbs; the one-way barbs 53 may be continuous barbs or may be notched to form discontinuous barbs.

In use, the cable insulation 112 may be placed in the second outer conductor 5, and then the unidirectional barbs 53 may be embedded in the cable insulation 112 by radial contraction of the second outer conductor 5, so as to grip the cable insulation 112, thereby ensuring that the cable insulation 112 will not contract under low temperature conditions.

The outer surface of the second outer conductor 5 is provided with a third outer conductor 6, and the third outer conductor 6 can radially fix the second outer conductor 5, so that the second outer conductor 5 cannot rebound to fail after being contracted.

In one realisable form, as shown in figure 3, the root of the one-way barb 53 is also provided with an impedance compensation groove 54 for impedance discontinuity compensation of the one-way barb 53.

In one implementation, as shown in fig. 1, the millimeter wave radio frequency coaxial connector with wide temperature range further includes a fourth outer conductor 7, and the fourth outer conductor 7 is soldered to the cable shield 113.

In an implementable manner, as shown in fig. 1, the broad temperature resistant millimeter wave radio frequency coaxial connector further comprises a first insulator 2, and the front end of the inner conductor 1 is radially fixed in the connector through the first insulator 2; specifically, the middle portion of the inner conductor 1 is provided with a step for fitting the first insulator 2, for fitting the first insulator 2 while radially and axially fixing the inner conductor 1.

As shown in fig. 1 and 2, in an implementable manner, the broad temperature millimeter wave radio frequency coaxial connector further comprises a first outer conductor 4, the first outer conductor 4 is located outside the inner conductor 1, a first outer conductor step 41 is arranged on the first outer conductor 4, the second insulator 3 is embedded in the first outer conductor step 41, and the second insulator 3 is clamped between the first outer conductor 4 and the third outer conductor 6, so that the axial fixity of the second insulator 3 is ensured.

The comprehensive structural design of the wide temperature resistant millimeter wave radio frequency coaxial connector finally enables the working temperature of the wide temperature resistant millimeter wave radio frequency coaxial connector to reach-150 ℃ to +165 ℃.

The assembly process of the wide temperature resistant millimeter wave radio frequency coaxial connector is as follows:

as shown in fig. 4, the cable 11 is stripped, the cable core 111, the cable insulation layer 112 and the cable shielding layer 113 are stripped, the fourth outer conductor 7 and the cable shielding layer 113 are welded, the second outer conductor 5 is penetrated on the cable insulation layer 112 to shrink after the welding is finished, the third outer conductor 6 is penetrated on the second outer conductor 5, the second insulator 3 is penetrated on the cable core 111 and then welded with the inner conductor 1, the second outer conductor is integrally installed in the connector main body including the connector outer shell, the first insulator 2 and the first outer conductor 4 after the welding is finished, and finally the nut at the tail of the connector is screwed through the screw thread to complete the assembly, so that the interconnection of the connector and the cable is realized.

The embodiments given above are preferable examples for implementing the present invention, and the present invention is not limited to the above-described embodiments. Any non-essential addition and replacement made by the technical characteristics of the technical scheme of the invention by a person skilled in the art belong to the protection scope of the invention.