CN213989483U

CN213989483U - Insulating support with gap and coaxial connector thereof

Info

Publication number: CN213989483U
Application number: CN202120149275.7U
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 with opening, including the insulator that has axial extension's centre bore, it has the opening that supplies coaxial connector's inner conductor's draw-in groove position to slide into the centre bore to open on this insulator's the lateral wall, and the bore of this opening is less than the diameter of centre bore, still has a plurality of radial extension's support arm along circumference interval distribution on its characterized in that insulator's the lateral wall, and the opening is located the insulator between the adjacent support arm, and the arm face looks rounding off transitional coupling of opening and adjacent support arm. After the scheme is adopted, more air can be contained in the coaxial connector under the same condition, so that the coaxial connector has better transmission characteristics. Simultaneously the opening and the arm surface of the adjacent support arm are designed into a smooth transition structure, so that the assembly of the inner conductor is facilitated, and the structure can be produced in a large scale by using a mold, so that the production cost can be reduced.

Description

Insulating support with gap and coaxial connector thereof

Technical Field

The utility model relates to an insulating support and coaxial connector thereof specifically indicate an insulating support and coaxial connector with opening.

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 aims to solve the first technical problem to provide a current situation to prior art, provide one kind and both made things convenient for the installation of inner conductor, can make coaxial connector reduce dielectric constant's the insulating support that has the opening 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: the utility model provides an insulating support with opening, includes the insulator that has the axially extended centre bore, it has the opening that supplies the draw-in groove position of coaxial connector's inner conductor to slide into the centre bore to open on this insulator's the lateral wall, and the bore of this opening is less than the diameter of centre bore, its characterized in that: the side wall of the insulating body is also provided with a plurality of radially extending support arms at intervals along the circumferential direction, the opening is positioned on the insulating body between the adjacent support arms, and the opening is in smooth transition connection with the arm surfaces of the adjacent support arms.

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 an axially extending center hole, a gap is formed in the side wall of the insulating body, the caliber of the gap is smaller than the diameter of the center hole, the clamping groove of the inner conductor slides into the center hole of the inner conductor from the gap, so that the insulating support is clamped in the clamping groove of the inner conductor, and the coaxial connector is characterized in that: the side wall of the insulating body is also provided with a plurality of radially extending support arms at intervals along the circumferential direction, the extending end of each support arm can fall into the positioning groove on the inner wall of the outer conductor, the opening is positioned on the insulating body between the adjacent support arms, and the opening is in smooth transition connection with the arm surfaces of the adjacent support arms.

In each of the above aspects, it is further developed that the extending end of each of the arms has a flange that can be dropped into a detent on the outer conductor of the coaxial connector after assembly. 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 a design has a plurality of support arms on insulation support's the body lateral wall, during the use, can support on the outer conductor through the support arm to make and to hold the air between the adjacent support arm, promptly under the same conditions, the utility model discloses and coaxial connector who uses can hold more air, and make coaxial connector have better transmission characteristic. Meanwhile, a smooth transition structure is designed between the notch and the arm surface of the adjacent support arm, so that the assembly of the inner conductor is facilitated, and the structure can be produced in a large scale by using a mold, so that the production cost can be reduced.

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 one clamping groove 31, only one corresponding insulating support 4 is provided, the insulating support 4 comprises an insulating body with a central hole 41 extending axially, please refer to fig. 2 and 3, the side wall of the insulating body is provided with a notch 42 for the clamping groove of the inner conductor 3 to slide into the central hole 41, the caliber of the notch 42 is smaller than the diameter of the central hole 41, and a plurality of support arms 43 extending radially are distributed on the side wall of the insulating body at intervals along the circumferential direction, in the embodiment, the number of the support arms 43 is three, the notch 42 is positioned on the insulating body between the adjacent support arms 43, and the notch 42 is in smooth transition connection with the arm surfaces of the adjacent support arms 43.

When the insulating support 4 is assembled with the inner conductor 3, the position of the slot 31 of the inner conductor 3 is aligned with the notch 42, and the inner conductor 3 slides into the central hole 41 by pressing, so that the insulating support 4 is clamped in the slot 31 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 insulation support with a notch comprises an insulation body with a central hole (41) extending axially, a notch (42) for allowing a clamping groove part of an inner conductor of a coaxial connector to slide into the central hole is formed in the side wall of the insulation body, and the caliber of the notch is smaller than the diameter of the central hole (41), and the insulation support is characterized in that: a plurality of radially extending support arms (43) are further distributed on the side wall of the insulating body at intervals along the circumferential direction, the opening is located on the insulating body between the adjacent support arms, and the opening is in smooth transition connection with the arm surfaces of the adjacent support arms.

2. The insulating support of claim 1, wherein: the extending end of each arm has a flange (431) for mating with a detent 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 (L) of the dielectric body 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 comprises an outer conductor, an inner conductor (3) with a clamping groove (31) and an insulating support (4), wherein the insulating support (4) further comprises an insulating body with an axially extending central hole (41), a notch (42) is formed in the side wall of the insulating body, the caliber of the notch is smaller than the diameter of the central hole, the clamping groove (31) of the inner conductor (3) slides into the central hole (41) of the inner conductor from the notch (42) to clamp the insulating support in the clamping groove (31) of the inner conductor, and the coaxial connector is characterized in that: a plurality of radially extending support arms (43) are further distributed on the side wall of the insulating body at intervals along the circumferential direction, the extending end of each support arm can fall into a positioning groove (21) in the inner wall of the outer conductor, the notch (42) is located on the insulating body between the adjacent support arms, and the notch (42) is in smooth transition connection with the arm surfaces of the adjacent support arms (43).

8. The coaxial connector of claim 7, wherein: the extended end of each arm (43) has a flange (431) that can drop into the detent.

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.