JPH019342Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a coaxial conversion connector used for connecting coaxial connectors of different thicknesses to each other by connecting them to both sides.

For example, signals from the outside may be guided through thick coaxial cables and supplied to the set, and within the set, signals may be supplied to various parts within the set using coaxial cables that are thinner than the external coaxial cables. In such cases, a coaxial conversion connector is used in which a connector for connecting a large external coaxial cable is provided at one end, a connector for connecting a small internal coaxial cable is provided at the other end, and the connectors are connected to each other at both ends in this way. This makes it possible to connect thick coaxial cables and thin coaxial cables.

This invention is intended to make such a coaxial conversion connector particularly compact.

The coaxial conversion connector according to this invention will be explained below with reference to the drawings. In FIG. 1, the first outer conductor 11 has a cylindrical shape, and has, for example, a thread 12 cut on its outer circumferential surface for connection to a mating connector. An attachment cylinder 14 is attached to the outer conductor 11 on the side opposite to the end surface 13 of the first outer conductor 11 on which the mating connector is inserted and removed. That is, outer conductor 1
A thread is cut on the outer circumferential surface of the end opposite to the end surface 13 of the outer conductor 1, and a screw cut on the inner circumferential surface of the mounting cylinder 14 is screwed into this thread, and the axis 22 of these outer conductors 11 and the axis of the mounting cylinder 14 are located on the same line, and the mounting cylinder 14 is fixed to the outer conductor 11.

A collar 15 is integrally formed on the outer periphery of the end of the mounting cylinder 14 on the end surface 13 side. Also, the mounting cylinder 1
A screw 16 is formed on the outer peripheral surface of the mounting plate 17, and the mounting cylinder 14 is inserted into a hole in which a mounting plate 17 is made, for example, and the end face of the collar 15 is brought into contact with the mounting plate 17.
The mounting cylinder 14 can be mounted on the mounting plate 17 by tightening the nut 18 onto the protruding screw 16.

As shown in FIGS. 1 and 3, the first outer conductor 11
A first contact 19 extending along the axis 22 is disposed at the position of the axis 22 . The first contact 19 is, for example, a fork-shaped contact in which two legs 19a and 19b are connected to each other at one end, and the center conductor of the mating connector is inserted between these two legs 19a and 19b to couple them together. be made able to do so. The opposite side of the first contact 19 to the mating connector, that is, the legs 19a, 1
A second contact 23 is integrally formed on an extension of the axis 22 of the first outer conductor 11 on the side of the interconnecting portions 21 of the first outer conductor 11 . 2nd contact 2
3 is also formed, for example, in the shape of a two-legged fork consisting of legs 23a and 23b. The second contact 23 is smaller than the first contact 19, so that it can be connected to the center conductor of a smaller mating connector.

A second outer conductor 24 is arranged between the second contact 23 and the mounting cylinder 14 with a space therebetween. As shown in FIG. 4, the second outer conductor 24 is formed by a slit 25 extending along the axial direction of a cylindrical body made of an elastic metal material, reaching from one end surface to the other end surface, and the diameter of the second outer conductor 24 can be compressed. Further, a ring-shaped groove 26 for coupling is formed on the outer peripheral surface. Furthermore, the first outer conductor 1 of the second outer conductor 24
An appropriate number of projecting pieces 27 are integrally bent and extended outward at approximately right angles on the end face of the first side. As shown in FIG. 1, these protrusions 27 are located between a ring-shaped protrusion 28 integrally formed on the inner peripheral surface of the axially intermediate portion of the mounting cylinder 14 and the end surface of the first outer conductor 11. The second outer conductor 24 is held in between. In this case, the outer circumferential surface of the second outer conductor 24 is in contact with the inner circumferential surface of the ring-shaped protrusion 28 to define its radial position. A ring-shaped space 29 is formed between the second outer conductor 24 and the mounting cylinder 14, into which the outer conductor of a mating connector is inserted. The ratio between the inner diameter of the first outer conductor 11 and the outer diameter of the first contact 19 is selected to be approximately equal to the ratio between the inner diameter of the second outer conductor 24 and the outer diameter of the second contact 23. .

An insulating member 31 is held inside the first outer conductor 11, and the contacts 19, 23 are held by the insulating member 31.
is retained. The insulating member 31 is the first contact 1
This is a case in which the insulating member 32 on the 9 side and the insulating member 33 on the second contact 23 side are configured. As shown in FIGS. 1 and 5, the insulating member 32 has a cylindrical shape with a circular outer circumference that fits into the inner circumferential surface of the first outer conductor 11.
The third side is closed by a closing plate 34, and a center hole 35 is formed in the closing plate 34, and the inner peripheral edge of the surface of the center hole 35 on the side to be connected to the mating connector is designed to facilitate insertion and removal of the mating center conductor. It has a conical tapered surface 36. The inner circumferential surface of the insulating member 32 is formed into a square hole 37 serving as a contact accommodating portion, and grooves 38a and 38b facing each other are parallel to the axis 22 so as to extend each central portion of the opposing inner surface of the square hole 37. formed,
These grooves 38a, 38b are formed from the end surface.
are communicated with each other on the end plate 34 side, and both side edges of the connecting portion 21 of the contact are inserted into these grooves 38a and 38b, so that the contacts 19 and 23 are held by the insulating member 32. Also, these grooves 38a, 3
Parts of the legs 19a and 19b of the contact 19 are located at 8b, respectively. A ring-shaped protrusion 39 is integrally formed on the inner circumferential surface of the first outer conductor 11 to prevent the insulating member 32 from slipping out from the end surface 13 side.

As shown in FIGS. 1 and 6, the insulating member 33 has a cylindrical shape with a circular outer periphery, and one end of the insulating member 33 is connected to the end plate 4.
A center hole 42 is formed in the end plate 41, which is integrally closed by the connector 1 and into which the center conductor of the mating connector is inserted and removed. The inner circumferential edge of the center hole 42 on the mating connector insertion/removal side is a conical tapered surface 43, and a collar 44 is integrally formed on the outer circumferential surface on the opposite side.
The inside of the insulating member 33 is a contact receiving hole 45 having a rectangular cross section, and grooves 46a and 46b in which both legs of the second contact 23 are disposed are formed so as to face and enlarge the inner surface of the receiving hole 45. Ru. These grooves 46a and 46b communicate with each other on the center hole 42 side. The collar 44 is located within the first outer conductor 11 as shown in FIG.
is inserted into the first outer conductor 11, and when its end face and the end face of the insulating member 33 are abutted, the other end face of the collar 44 is located on the same plane as the end face of the outer conductor 11.
Projecting pieces 24 of the second outer conductor 24 are brought into contact with these end faces. Further, the outer circumferential surface of the insulating member 33 is
1, the diameter becomes slightly smaller, and a slight interval 47 is formed between the outer peripheral surface and the outer conductor 24.

According to the coaxial conversion connector of this invention described above, the first outer conductor 11 and the first contact 19
The connector with the second outer conductor 24 and the second contact 23 allows connection with the connector of a thin coaxial cable. The connector and the thin coaxial cable connector are connected by this coaxial conversion connector. Second contact 23 and outer conductor 2
4 is located within the mounting cylinder 14, so it can be configured as a small device with a short overall length in the axial direction. Furthermore, the outer conductor 24 is made of a relatively thin material, and therefore may be deformed by a slight force.
4 is provided, thereby mechanically protecting the outer conductor 24 and preventing unnecessary deformation. Furthermore, when the mounting cylinder 14 is coupled to a mating connector, it also acts as a guide for the external conductor of the mating connector. Therefore, it becomes easy to combine.

[Brief explanation of the drawing]

Fig. 1 is a front view with one half sectioned, showing an example of the coaxial conversion connector according to this invention, Fig. 2 is a right side view of Fig. 1, and Fig. 3 is a plan view of the contact.
FIG. 4 is a perspective view showing the second outer conductor 24, FIG. 5 is a perspective view showing a cross section of one half of the insulating member 32, and FIG.
The figure is a perspective view of one half of the insulating member 33 in cross section. 11: First outer conductor, 14: Mounting cylinder, 1
9: first contact, 23: second contact, 2
4: second outer conductor, 31: insulating member.

Claims (1)

[Scope of utility model registration request] A cylindrical first outer conductor, a first contact provided at the axial center position of the first outer conductor and connected to the inner conductor of the mating connector, and a side opposite to the joining portion of the first contact with the mating connector. a second contact that is smaller than the first contact and is integrally formed extending on the axis and is to be coupled with another internal conductor; and a mounting cylinder attached to the first outer conductor, and a space between the mounting cylinder and the second contact, respectively, and a diameter larger than the inner diameter of the first outer conductor. A coaxial conversion connector comprising: an elastic cylindrical second outer conductor having a small inner diameter; and an insulating member fixed within the first outer conductor and holding the first and second contacts.