CN213989306U

CN213989306U - Insulating support and coaxial connector thereof

Info

Publication number: CN213989306U
Application number: CN202120156263.7U
Authority: CN
Inventors: 詹少东
Original assignee: Somefly Technologies Co ltd
Current assignee: Somefly Technologies Co ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-08-17
Anticipated expiration: 2031-01-20

Abstract

The utility model relates to an insulating support, including the insulator that has axial extension's centre bore, its characterized in that: the center hole is a threaded hole, and a plurality of radially extending support arms are distributed on the side wall of the insulating body at intervals along the circumferential direction. Still disclose the coaxial connector who has this insulation support simultaneously, because the utility model discloses an insulation support's centre bore designs into the screw hole, consequently as long as rotatory insulation support can make things convenient for, assemble fast when assembling the inner conductor and target in place, and the support arm through insulation support can support on the outer conductor simultaneously to make and to hold the air between the adjacent support arm, promptly under the same conditions, the utility model discloses and the coaxial connector who uses can hold more air, and make coaxial connector have better transmission characteristic.

Description

Insulating support and coaxial connector thereof

Technical Field

The utility model relates to an insulating support and coaxial connector thereof.

Background

The coaxial connector is an important transmission component in the microwave field, and mainly comprises an outer conductor, an inner conductor and an insulating support, wherein the inner conductor is fixed on a central line of an inner cavity of the outer conductor through the insulating support, so that the inner conductor and the outer conductor are always in a coaxial relationship. In order to minimize the effective dielectric constant, thinner insulators are used to support the inner conductor, such as the three sheet insulators disclosed in the chinese patent publication No. CN 103326206B. There is also a structure of punching and grooving on the insulating support, such as the structure disclosed in the background art of chinese patent publication No. CN102931548B, that is, as much air as possible is introduced as an insulating medium to increase the operating frequency of the coaxial connector.

In the existing coaxial connector, after a thin insulating support is adopted, the fixing mode of the coaxial connector and an inner conductor is diversified, and the insulating support and the inner conductor are integrated into a whole in an injection molding mode; as in the first document, the inner conductor is slid into the positioning groove of the inner conductor from one end thereof by interference fit; or, as in the second document mentioned above, the insulating support is cut in half and looped around the slot of the inner conductor. In addition, a notch is formed on the side surface of the insulating support, and as disclosed in chinese patent application publication No. CN103367967A, the inner conductor is pushed into the inner hole of the insulating support from the notch of the insulating support.

By adopting the mode, although the inner conductor and the insulating support can be connected into a whole, certain disadvantages still exist, and although the installation efficiency of the insulating support with the notch can be obviously improved, the side wall of the insulating support still has a plurality of solid structures, so the structure can be further improved.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the first technical problem that will solve is to prior art's current situation, provides one kind and has both made things convenient for the installation of inner conductor, can make coaxial connector reduce dielectric constant's insulating support again.

The utility model discloses the second technical problem that will solve is to prior art's current situation, provides one kind and has both made things convenient for the installation of inner conductor, can reduce dielectric constant's coaxial connector again.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: an insulator support comprising an insulator body with an axially extending central bore, wherein: the center hole is a threaded hole, and a plurality of radially extending support arms are distributed on the side wall of the insulating body at intervals along the circumferential direction.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: a coaxial connector comprises an outer conductor, an inner conductor with a clamping groove and an insulating support, wherein the insulating support further comprises an insulating body with a central hole extending axially, and the coaxial connector is characterized in that: the inner conductor comprises a first inner conductor and a second inner conductor which are connected with each other, the clamping groove is formed in the end portion of the first inner conductor connected with the second inner conductor, the central hole of the insulating support is a threaded hole in threaded connection with the end portion of the first inner conductor, a plurality of radially extending support arms are further distributed on the side wall of the insulating body at intervals along the circumferential direction, and the extending ends of the support arms can fall into the positioning grooves in the inner wall of the outer conductor.

In each of the above aspects, it is further improved that the extended end of each of the arms has a flange. After assembly, the flange may be dropped into a detent on the outer conductor on the coaxial connector. Thus, the strength is ensured, and the positioning stability is improved. Or the support arms can be gradually expanded from the root parts to the extension ends so as to achieve the same purpose.

In order to accommodate more air, it is preferable that both sides of each of the arms are respectively provided with an axially extending through hole or a recess.

In each of the above aspects, the minimum wall thickness of the insulating body is preferably less than 1/2 wavelengths of waves transmitted by the coaxial connector.

Meanwhile, it is preferable that the plurality of support arms are three support arms, so that the strength of the insulating support is satisfied, and more air can be accommodated.

Compared with the prior art, because the utility model discloses an insulation support's centre bore designs into the screw hole, consequently when assembling the inner conductor as long as rotatory insulation support can make things convenient for, assemble in place fast, and the support arm through insulation support can support on the outer conductor simultaneously to make and to hold the air between the adjacent support arm, promptly under the same conditions, the utility model discloses and can hold more air in the coaxial connector who uses thereof, and make coaxial connector have better transmission characteristic.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic front view of the insulating support of FIG. 1;

FIG. 3 is a perspective view of FIG. 2;

fig. 4 is another schematic view of the insulating support of fig. 1.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

In the description of the present invention, it is to be understood that the terms "center", "depth", "thickness", "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and that the terms indicating orientation should be used for illustrative purposes only and should not be construed as limiting since the disclosed embodiments of the present invention can be arranged in different orientations, such as "upper" and "lower" are not necessarily limited to orientations opposite to or consistent with the direction of gravity. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The coaxial connector shown in fig. 1 is an insulator which uses an insulating support with a special structure as a supporting inner conductor, and comprises an outer conductor, an inner conductor 3 and an insulating support 4, wherein the outer conductor can adopt a structure in the prior art, but in the embodiment, the outer conductor is composed of a first outer conductor 1 and a second outer conductor 2, the first outer conductor 1 is internally provided with a small-diameter cavity 11 and a large-diameter cavity 12 which are coaxially distributed and mutually communicated, and the inner wall of the first outer conductor between the large-diameter cavity and the small-diameter cavity forms an inner step surface 13; the second outer conductor 2 is hollow and one end of the second outer conductor 2 is connected to the large diameter cavity 12 of the first outer conductor 1. in fig. 1, the second outer conductor 2 is directly inserted into the large diameter cavity 12 of the first outer conductor 1. Of course, the second outer conductor 2 and the first outer conductor 1 can be assembled in other ways, as long as the fixed connection between the first outer conductor and the second outer conductor is satisfied.

The inner conductor 3 is provided with a slot 33, the number of the slots is determined according to requirements, in this embodiment, the number of the slots is one, and in order to match with an insulation support described below, the inner conductor includes a first inner conductor 31 and a second inner conductor 32 which are connected with each other, specifically, the right end of the first inner conductor 31 is provided with a threaded hole, the left end of the second inner conductor 32 is screwed into the threaded hole of the first inner conductor 31, the slot 33 is formed on the end portion of the first inner conductor 31 connected with the second inner conductor 32, namely, the outer diameter of the right end portion of the first inner conductor 31 is smaller and is provided with an external thread, and after the inner conductor is connected with the second inner conductor 32, the slot 33 is formed at the position where the outer diameter of the first inner conductor 31 is smaller. Correspondingly, there is only one insulating support 4, the insulating support 4 includes an insulating body 42 with an axially extending central hole 41, and the central hole 41 is a threaded hole in threaded connection with the external thread at the right end of the first inner conductor 31, see fig. 2 and 3, and a plurality of radially extending arms 43 are further circumferentially spaced on the side wall of the insulating body 42, in this embodiment, the number of the arms 43 is three. When the insulating support 4 is assembled with the inner conductor 3, the center hole (i.e. the threaded hole) of the insulating support 4 is aligned with the external thread at the right end of the first inner conductor 31, and the rotating operation is performed to connect the insulating support 4 to the first inner conductor 31 by the screw thread, and then the second inner conductor 32 is connected to the first inner conductor 31 by the screw thread, so that the insulating support 4 is located in the slot 33 of the inner conductor 3, and the inner conductor 3 and the insulating support 4 can be assembled together quickly.

In order to axially position the insulating support 4 by the outer conductor, a positioning groove 21 is formed on the inner wall of the insertion end of the second outer conductor 2 for the extension end of each arm 43 of the insulating support 4 to fall into, when the integrated inner conductor 3 and the insulating support 4 need to be assembled into the inner cavity of the outer conductor, the inner conductor 3 with the insulating support 4 is firstly inserted into the large-diameter cavity 12 of the first outer conductor 1, so that one side surface (namely the right end surface in fig. 1) of each arm 43 of the insulating support 4 is abutted against the inner step surface 13, then the second outer conductor 2 is tightly inserted into the large-diameter cavity 12 of the first outer conductor 1 until the insertion end of the second outer conductor 2 is abutted against the inner step surface 13, and the other extension end of each arm is positioned in the positioning groove 21 of the second outer conductor, so that the side surface (namely the left side surface in fig. 1) of each arm 43 is abutted against the positioning groove 21, so that the insulating support 4 is reliably positioned on the outer conductor.

For convenience of installation and force application, in the embodiment, the extending end of each arm 43 has a flange 431, and the flange 431 can fall into the positioning groove 21 of the second outer conductor 2 to improve the strength of the support. Of course, it is also possible to design the structure as shown in fig. 4, i.e. each arm 43 is gradually enlarged from the root to the extension end, so as to satisfy the strength of the insulating support and ensure that more air can be accommodated.

In order to further contain more air, the two sides of each arm 43 are respectively provided with an axially extending through hole 432 or a recess, and the minimum wall thickness L of the insulating body is designed to be smaller than 1/2 wavelength of the wave transmitted by the coaxial connector, so that the insulating support 4 has good elasticity and can meet the strength requirement.

In addition to this embodiment, according to needs, the outer conductor may also be designed to be one, the positioning groove is directly opened on the inner wall of the outer conductor, and according to the manner in the existing document, the outer diameter of each support arm component is slightly larger than the diameter of the inner cavity of the outer conductor, and the support arms are pressed into the inner cavity of the outer conductor by using the elasticity of the insulation support, and fall into the positioning groove, so that the insulation support is clamped in the outer conductor, and it is ensured that the support arms cannot move relative to the outer conductor in the axial direction and the radial direction. And the number of the supporting arms can be set to four or five. Namely, such a solution also falls within the scope of protection of the present invention.

Claims

1. An insulating support comprising an insulating body (42) with an axially extending central bore (41), characterized in that: the center hole (41) is a threaded hole, and a plurality of radially extending support arms (43) are further distributed on the side wall of the insulating body (42) at intervals along the circumferential direction.

2. The insulating support of claim 1, wherein: the extended end of each arm (43) has a flange (431) for mating with a detent (21) on the outer conductor of the coaxial connector.

3. The insulating support of claim 1, wherein: each support arm is gradually enlarged from the root part to the extending end.

4. An insulating support according to claim 1, 2 or 3, wherein: both sides of each support arm are respectively provided with an axially extending through hole (432) or a concave part.

5. An insulating support according to claim 1, 2 or 3, wherein: the minimum wall thickness of the dielectric body (42) is less than 1/2 wavelengths of waves transmitted by the coaxial connector.

6. An insulating support according to claim 1, 2 or 3, wherein: the plurality of support arms (43) are three support arms.

7. A coaxial connector comprising an outer conductor (1), an inner conductor (3) with a clamping groove (33) and an insulating support (4) which in turn comprises an insulating body (42) with an axially extending central bore (41), characterized in that: the inner conductor comprises a first inner conductor (31) and a second inner conductor (32) which are connected with each other, a clamping groove (33) is formed in the end portion of the first inner conductor connected with the second inner conductor, a central hole (41) of the insulating support is a threaded hole in threaded connection with the end portion of the first inner conductor (31), a plurality of radially extending support arms (43) are further distributed on the side wall of the insulating body (42) at intervals along the circumferential direction, and the extending ends of the support arms can fall into positioning grooves (21) in the inner wall of the outer conductor.

8. The coaxial connector of claim 7, wherein: the extending end of each support arm (43) is provided with a flange (431) which can fall into the positioning groove (21).

9. The coaxial connector of claim 7, wherein: each support arm (43) is gradually expanded from the root part to the extending end.

10. The coaxial connector of claim 7, 8 or 9, wherein: two sides of each support arm (43) are respectively provided with an axially extending through hole (432) or a concave part.