TWI644490B - Connectors for coaxial cables - Google Patents

Abstract

Provides miniaturized connectors for coaxial cables.

The coaxial plug (10) includes a housing (1) and a cylindrical casing (2), and includes a center contact (3), a compression sleeve (4), and a set of dielectric cylinders (5a, 5b). The outer cover (1) has a first storage room (11) capable of accommodating a terminal of the coaxial cable (Cb). The casing (2) is arranged inside the outer cover (1) and can be connected to the external conductor (Wb). The center contact piece (3) is arranged inside the casing (2), and has a connection portion (31) connected to the center conductor (Wc). The compression sleeve (4) can fix the coaxial plug (10) at the end of the coaxial cable (Cb). A group of dielectric cylinders (5a, 5b) are housed inside the casing (2), and the center contact (3) can be supported at the center. The casing (2) is a group of dielectric cylinders (5a, 5b) arranged separately in the axial direction of the center contact (3), and an air layer (As) is provided between the group of dielectric cylinders (5a, 5b). ).

Description

   Connectors for coaxial cables   

The present invention relates to a connector for a coaxial cable. In particular, it relates to a structure of a coaxial cable connector that is fixed to a terminal of a coaxial cable and can be attached to and detached from a coaxial connector mounted on a target side of a printed circuit board.

The coaxial connector includes, for example, a coaxial plug mounted on a terminal of a coaxial cable, and a socket mounted on a printed circuit board. By connecting the coaxial plug to the socket, high-frequency signals can be transmitted from the coaxial cable to the printed circuit board, or high-frequency signals can be transmitted from the printed circuit board to the coaxial cable.

Generally speaking, a coaxial cable is composed of a circular center conductor, a dielectric such as a fluororesin that surrounds the center conductor, an external conductor such as a twisted wire that surrounds the dielectric, and an insulating sheath covering the external conductor. .

The coaxial plug fixed at the end of such a coaxial cable is generally a central contact with the center conductor. One end side holds the outer conductor from the dielectric, and the other end side forms a cylindrical shell. And a disc-shaped dielectric that supports the center contact on the coaxial inside the other end side of the case.

However, since the portion connecting the one end portion side and the other end portion side of the case is opened in the outer peripheral direction, a part of the center contact is exposed. That is to say, because the opening is open in the air, there is a mismatch between the impedance of the opening and the impedance of the coaxial cable.

In order to solve this deficiency, the impedance of the open space of the casing exposing a part of the center contact and the impedance of the coaxial cable have been set to match, and the connector for the coaxial cable with this structure can be realized in a simple and low-cost manner. (See, for example, Patent Document 1).

    [Prior technical literature]         [Patent Literature]    

[Patent Document 1] Japanese Patent Laid-Open No. 2011-9111

FIG. 12 is a longitudinal cross-sectional view of a conventional coaxial cable connector, which corresponds to FIG. 3 in Patent Document 1. FIG.

Referring to FIG. 12, a conventional coaxial cable connector (hereinafter referred to as a coaxial plug) 9 is fixed to a terminal of the coaxial cable Cb. The coaxial cable Cb is made of a single-core or stranded wire, a round central conductor Wc, a dielectric Di such as a fluorine resin surrounding the central conductor Wc, and an outer conductor Wb such as a twisted wire surrounding the dielectric Di. It is composed of an insulating sheath Wi covering the outer conductor Wb.

The coaxial plug 9 includes a cylindrical center contact 91 and a cylindrical sleeve 92. The coaxial plug 9 includes a cylindrical dielectric 93 and a conductor ring 94 for impedance matching.

The center contact 91 is a crimp barrel 91a installed at the base end portion. The crimping cylinder 91a presses the center conductor Wc, so that the center contact 91 and the center conductor Wc are mechanically and electrically connected.

The center contact 91 can be pressed into an opening formed in the center of the dielectric 93. In this way, the center contact 91 can be fixed to the dielectric 93. The center contact 91 is arranged at the center of the receiving hole 93h opened on the front end side of the dielectric 93. When the object-side center contact (not shown) is inserted into the receiving hole 93h, the object-side center contact can be connected to the center contact 91 .

The housing 92 has a wire barrel 921 at a base end portion, and a cylindrical connector connection portion 922 at a front end portion side. The crimping cylinder 921 and the connector connecting portion 922 are bridged by a pair of connecting pieces 92j and 92j.

The crimping cylinder 921 includes a conductive cylinder 92a and an insulating clip 92b. The conductive cylinder 92a can press-fix the external conductor Wb from the dielectric Di. In addition, the conductive tube 92a can be mechanically and electrically connected to the external conductor Wb. The insulation clip 92b presses the insulation sheath Wi, so that the coaxial plug 9 is fixed at the terminal of the coaxial cable Cb.

The connector connection portion 922 has an insulation clip 92c. The insulating clip 92c presses the dielectric 93 and fixes the dielectric 93 to the connector connection portion 922.

A conductor ring 94 formed of a hollow cylindrical conductive member is buried in the dielectric 93 from one end surface of the dielectric 93. The conductor ring 94 is arranged so as to be concentric with the center contact 91 via the dielectric 93 so as to surround the center contact 91. One end surface of the conductor ring 94 is arranged so that a part of the center contact 91 and the open space Ao of the casing 92 exposed in the air face each other. In this way, the coaxial plug 9 of Patent Document 1 is configured such that the impedance of the open space Ao of the casing 92 where a part of the center contact 91 is exposed can match the impedance of the coaxial cable Cb.

However, in the connector for coaxial cables of Patent Document 1, the structure of the cylindrical sleeve 92 is divided into a crimping cylinder 921 and a connector connecting portion 922, and an open space Ao is provided therebetween, which is difficult. miniaturization. Furthermore, the manner in which the impedance matching conductor ring 94 is embedded in the dielectric 93 prevents the miniaturization of the coaxial cable connector. Furthermore, from the base end portion to the middle portion of the center contact, since it is continuously covered with a dielectric having a dielectric constant greater than air, there is a problem that it is difficult to transmit a high-frequency signal by a connector for a small cable.

The present invention has been developed in view of such problems, and an object thereof is to provide a connector for a coaxial cable that can be made more compact.

The inventor of the present invention believes that by providing a structure that surrounds the center contact member in a cylindrical shape, and a group of disc-shaped dielectric cylinders that support the center contact member at the center portion thereof are separately arranged in the axial direction of the cylindrical casing. That is, the air layer is interposed in the center contact piece surrounded by the cylindrical casing, and based on this discovery, the following novel coaxial cable connector is invented.

(1) The connector for a coaxial cable according to the present invention includes a center conductor, a dielectric surrounding the center conductor, an outer conductor surrounding the dielectric, and an insulating sheath covering the outer conductor, and is configured on the coaxial cable. The terminal is provided with a hexahedron-shaped cover, a first receiving chamber having an opening at one side thereof for receiving the terminal of the coaxial cable, and a communication with the first receiving chamber at the other end side. And the other side is provided with a second storage chamber into which a cylindrical object-side casing can be inserted; the cylindrical casing is arranged inside the cover from the first storage chamber to the second storage chamber, Furthermore, the first connecting portion is capable of inserting the aforementioned dielectric inside the one end portion and covering the outer portion of the one end portion with the above-mentioned external conductor; and a second connecting portion is extended from the first connecting portion and can be connected to the first connecting portion. It is connected to the above-mentioned object side casing; a cylindrical central contact is arranged coaxially with the casing along the axis center of the casing and is inside the casing, and has a terminal portion connected to the center conductor at one end side On the other side There is a contact piece connecting portion that can be connected to the target-side center contact piece; a cylindrical compression sleeve covers the outer conductor of the first connecting portion from the outer peripheral direction of the sleeve, and can cover the sleeve One end portion is compressed laterally toward the dielectric; and a set of disc-shaped dielectric cylinders are housed inside the sleeve and support the center contact member at the center; the sleeve is connected to the second connection portion, A group of the foregoing dielectric cylinders are separately arranged in the axial direction of the center contact, and an air layer is provided between the group of the foregoing dielectric cylinders.

(2) The center contact is preferably such that the wiring portion is bonded to the center conductor.

(3) The aforementioned cover preferably has a locking lever on the outer wall capable of locking the coaxial connector on the target side.

The coaxial cable connector of the present invention is provided with a cylindrical sleeve, which separates a group of dielectric cylinders in the axial direction of the center contact, and an air layer is provided between the group of dielectric cylinders. Therefore, the outer diameter of the housing can be reduced, and the connector for coaxial cables can be miniaturized.

1‧‧‧ outer cover

2‧‧‧ shell

3‧‧‧ center contact

4‧‧‧ compression sleeve

5a, 5b ‧‧‧ a group of dielectric cylinders

9p‧‧‧printed substrate

10‧‧‧Coaxial connector (connector for coaxial cable)

11‧‧‧1st Containment Room

11d‧‧‧Groove

11h‧‧‧Press into the hole

11r‧‧‧Stop lever

11w‧‧‧ partition wall

12‧‧‧Second Containment Room

12h‧‧‧Press into the hole

21‧‧‧The first connection

22‧‧‧ 2nd connection section

31‧‧‧Wiring Department

32‧‧‧contact connector

70‧‧‧ coaxial connector

71‧‧‧Cover

71r‧‧‧Containment Room

72‧‧‧ Case on the subject side

73‧‧‧ Center contact on the object side

731‧‧‧contact terminal

74a, 74b‧‧‧‧a group of disc-shaped dielectrics

91p‧‧‧One side of printed substrate

111‧‧‧ buckle protrusion

711‧‧‧ latch slot

As‧‧‧air layer

Cb‧‧‧ coaxial cable

Di‧‧‧ Dielectric

Wc‧‧‧center conductor

Wb‧‧‧outer conductor

Wi‧‧‧ Insulated Sheath

FIG. 1A is a perspective view of a coaxial cable connector according to an embodiment of the present invention, which shows the appearance of the front side and the top side.

FIG. 1B is a perspective view of a coaxial cable connector according to an embodiment of the present invention, which shows the appearance of the back side and the bottom side.

Fig. 2 is an exploded perspective view showing the assembly of the coaxial cable connector according to the embodiment.

FIG. 3 is an enlarged perspective view of a main part of the coaxial cable connector according to the embodiment, and a part of the connector is shown in a sectional view.

FIG. 4A is a perspective view of the outer cover structure of the coaxial cable connector installed in the embodiment, and shows the appearance of the front side and the top side.

FIG. 4B is a perspective view of the outer cover structure of the coaxial cable connector installed in the embodiment, and shows the appearance of the back side and the top side.

Fig. 5A is a plan view showing the structure of an outer cover mounted on the coaxial cable connector of the embodiment.

Fig. 5B is a front view of the outer cover structure of the coaxial cable connector according to the embodiment;

Fig. 5C is a right side view showing the structure of the outer cover of the connector for coaxial cables installed in the embodiment.

Fig. 5D is a left side view showing the structure of the outer cover of the connector for coaxial cables installed in the embodiment.

Fig. 5E is a rear view showing the structure of the outer cover of the connector for coaxial cables installed in the embodiment.

Fig. 6 is a perspective view showing a configuration of a center contact member mounted on the coaxial cable connector of the embodiment;

Fig. 7 is a perspective view of a center contact member mounted on the coaxial cable connector of the aforementioned embodiment, and shows a connection state between one end portion of the center contact member and the center conductor.

FIG. 8 is a perspective view of a center contact member installed in the coaxial cable connector according to the embodiment, and shows a state where a group of dielectric cylinders are disposed at the center contact member.

FIG. 9A is a longitudinal sectional view of the coaxial cable connector according to the embodiment, and shows a state before connection with the coaxial connector on the target side.

FIG. 9B is a longitudinal sectional view of the coaxial cable connector according to the embodiment, and shows a state after being connected to the coaxial connector on the target side.

FIG. 10 is a perspective view of a coaxial cable connector according to the embodiment, and a state where the coaxial connector is connected to the target side is shown in a longitudinal section.

FIG. 11 is an enlarged oblique cross-sectional view of a main part of the coaxial cable connector of the embodiment.

FIG. 12 is a longitudinal sectional configuration diagram of a connector for a conventional coaxial cable.

    [Form of Implementing Invention]    

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[Configuration of Connector for Coaxial Cable]

First, a configuration of a coaxial cable connector according to an embodiment of the present invention will be described.

FIGS. 1A and 1B are perspective views of a coaxial cable connector according to an embodiment of the present invention. FIG. 1A shows the appearance of the front side and the top side, and FIG. 1B shows the appearance of the back side and the bottom side.

Fig. 2 is an exploded perspective view showing the assembly of the coaxial cable connector according to the embodiment. FIG. 3 is an enlarged perspective view of a main part of the coaxial cable connector according to the embodiment, and a part of the connector is shown in a sectional view.

FIG. 4A and FIG. 4B are perspective views of the outer cover structure of the coaxial cable connector installed in the aforementioned embodiment. FIG. 4A shows the appearance of the front side and the top side, and FIG. 4B shows the back side and the top side. Exterior.

5A to 5E are a plan view, a front view, a right side view, a left side view, and a rear view, respectively, of the outer cover structure of the connector for coaxial cables installed in the aforementioned embodiment.

Fig. 6 is a perspective view showing a configuration of a center contact member mounted on the coaxial cable connector of the embodiment; FIG. 7 is a perspective view of a center contact member mounted on the coaxial cable connector of the embodiment, and shows a state where one end portion of the center contact member is connected to the center conductor.

FIG. 8 is a perspective view of a center contact member mounted on the coaxial cable connector of the embodiment, and shows a state where a group of dielectric cylinders are disposed on the center contact member.

FIG. 9A and FIG. 9B are longitudinal sectional views of the coaxial cable connector installed in the aforementioned embodiment. FIG. 9A shows the state before being connected to the coaxial connector on the object side, and FIG. 9B shows the coaxial connection on the object side. The state behind the connector.

FIG. 10 is a perspective view of the coaxial cable connector according to the embodiment, and a state after the coaxial cable connector is connected to the target side connector is shown in a longitudinal section. FIG. 11 is a perspective view of a coaxial cable connector according to the embodiment, in which a main part of a state of being connected to the coaxial connector on the target side is shown in a longitudinal section.

(Overall composition)

1A, FIG. 1B to FIG. 11, a connector (hereinafter referred to as a coaxial plug) 10 for a coaxial cable according to an embodiment of the present invention is configured at a terminal of the coaxial cable Cb. The coaxial cable Cb includes a center conductor Wc, a dielectric Di surrounding the center conductor Wc, an outer conductor Wb surrounding the dielectric Di, and an insulating sheath Wi covering the outer conductor Wb.

The coaxial plug 10 includes a hexahedron-shaped cover 1 and a metal cylindrical casing 2. In addition, the coaxial plug 10 includes a cylindrical center contact 3, a cylindrical compression sleeve 4, and a pair of disc-shaped dielectric cylinders 5a and 5b.

1A, FIG. 1B or FIG. 4A, FIG. 4B, and FIG. 5A to FIG. 5E, the outer cover 1 has a first storage chamber 11 on one end side. The first storage chamber 11 has a circular opening on one side of the outer cover 1. In addition to the insulation sheath Wi, the first storage chamber 11 can accommodate a terminal of the coaxial cable Cb (see FIG. 9).

The cover 1 includes a second storage chamber 12 on the other end side. The second storage chamber 12 communicates with the first storage chamber 11. The second storage chamber 12 has a circular opening on the other side of the cover 1, and the cylindrical object-side casing 72 can be inserted into the second storage chamber 12 (see FIG. 9).

1A, FIG. 1B or FIG. 4A, FIG. 4B and FIG. 9A, the cover case 2 is arranged inside the outer cover 1 from the first storage chamber 11 to the second storage chamber 12. The casing 2 is composed of a first connection portion 21 on one end portion side and a second connection portion 22 on the other end portion side (see FIG. 2). In the case 2, a second connection portion 22 having a smaller outer diameter is extended from the first connection portion 21 having a larger outer diameter.

Referring to FIG. 9A or FIG. 10, a dielectric Di is inserted into the first connection portion 21 on the one end portion side of the case 2. The outside of the first connection portion 21 is covered with an external conductor Wb. In other words, the first connection portion 21 of the housing 2 has an appropriate size inside diameter in which the dielectric Di can be placed inside, and has an appropriate size outside diameter that covers the outer conductor Wb on the outer periphery. The inner diameter and the outer diameter may be slightly different. On the other hand, the outer diameter of the second connection portion 22 on the other end portion side of the case 2 is smaller than that of the first connection portion 21 and can be connected to the object-side case 72.

Referring to FIG. 3, FIG. 6 or FIG. 9A, FIG. 9B and FIG. 10, the center contact 3 is disposed inside the casing 2. The center contact 3 is arranged along the center of the axis of the sleeve 2 so as to be coaxial with the sleeve 2.

The center contact 3 has a wiring portion 31 on one end portion side. The wiring portion 31 may be, for example, a laser-welded central conductor Wc, and may be changed in shape as needed. In addition, it can be connected by crimping or crimping. On the other hand, the center contact 3 has a contact connection portion 32 on the other end side. The contact connecting portion 32 can be connected to the contact terminal 731 of the center contact 73 on the object side (see FIG. 9A).

Referring to FIG. 2, FIG. 3, or FIG. 9A and FIG. 10, the compression sleeve 4 is sheathed on the outer conductor Wb through one end portion of the casing 2, so that one end portion of the casing 2 can be compressed toward the dielectric Di. In other words, the compression sleeve 4 is an outer conductor Wb that covers the first connection portion 21 from the outside of the outer circumferential direction of the sleeve 2, and the outer conductor Wb on the outer periphery of the first connection portion 21 of the sleeve 2 is held in the sleeve 2. (First connection portion 21) and the compression sleeve 4. In this way, the casing 2 and the external conductor Wb can be surely electrically connected, and the coaxial plug 10 can be fixed to the terminal of the coaxial cable Cb (see FIGS. 1A and 1B).

A group of dielectric cylinders 5 a and 5 b is housed inside the casing 2. A group of dielectric cylinders 5a, 5b can support the center contact 3 at its center (see Fig. 8). In the embodiment, the center contact 3 can pass through a group of dielectric cylinders 5a and 5b.

A group of dielectric cylinders 5 a and 5 b are arranged separately in the sleeve 2 in the axial direction of the center contact 3. In this way, the casing 2 is provided with an air layer As between a group of dielectric cylinders 5a, 5b.

The coaxial plug 10 according to the embodiment is provided with a cylindrical sleeve in which a group of dielectric cylinders 5a and 5b are arranged separately in the axial direction of the center contact 3 and an air layer As is provided between the group of dielectric cylinders 5a and 5b. Shell 2, so the outer diameter of the sleeve can be reduced, and the coaxial plug can be miniaturized.

(Construction of the cover)

Next, the configuration of the outer cover 1 according to the embodiment will be described. Referring to FIG. 1A, FIG. 1B or FIG. 2 and FIG. 4A, FIG. B or FIG. 5A to FIG. 5E, and FIG.状 的 壳 壳 1。 The outer cover 1.

The cover 1 has a partition wall 11w that partitions the first storage room 11 and the second storage room 12. The partition wall 11w is provided with a press-in hole 11h. The second connection portion 22 of the casing 2 can be pressed into the press-in hole 12h from the first storage chamber 11 toward the second storage chamber 12 (see FIG. 9A). In this way, the casing 2 can be fixed inside the outer cover 1.

Furthermore, a pair of square grooves 11d and 11d are formed in the upper part of the cover 1. The pair of grooves 11d and 11d can be fitted into and guided by projections (not shown) provided in the storage chamber 71r of the outer cover 71 of the subject-side coaxial connector 70 (see FIG. 9A). The pair of grooves 11 d and 11 d function as a key groove for preventing the coaxial plug 10 from being inserted by mistake.

Referring to Figs. 1A, 1B, or 2 and 4, the outer cover 1 has a locking lever 11r on the outer wall. The locking lever 11r is provided with a locking protrusion 111 between the locking lever 11r and the base end portion. On the other hand, referring to FIG. 9B, in the coaxial connector 70 on the subject side, a latch groove 711 is formed in the inner wall of the storage chamber 71 r. In this way, when the coaxial plug 10 is inserted into the accommodating chamber 71r, the locking protrusion 111 is fitted into the latch groove 711, and the coaxial plug 10 can be fastened to the coaxial connector 70 on the object side.

(Composition of the casing and center contact)

Next, the configurations of the cover case 2 and the center contact 3 of the embodiment will be described. Referring to FIG. 2 or FIG. 3, the casing 2 is preferably composed of a metal tube having conductivity, and the metal tube having conductivity is molded into a shape to obtain a cylindrical casing 2.

Referring to FIGS. 6 to 8, the center contact 3 is preferably formed of a metal plate having conductivity, and the metal spread plate having conductivity is molded into a shape, and the center contact 3 having the wiring portion 31 at one end can be obtained. . Although the center contact 3 is preferably made of a copper alloy, it is not limited to a copper alloy.

(Assembly method of connector for coaxial cable)

Next, an assembly procedure of the coaxial plug 10 and the coaxial cable Cb according to the embodiment will be described with reference to FIGS. 2, 3, 7, or 9A. First, each component of the coaxial cable Cb is stripped or cut off at a predetermined peeling length, and the coaxial cable Cb is subjected to termination processing. Next, the connection portion 31 of the center contact 3 is laser-welded to the center conductor Wc (see FIG. 7). Then, the center contact 3 is passed through the inside of the case 2 so that the first connection portion 21 of the case 2 is disposed between the dielectric Di and the outer conductor Wb. The compression sleeve 4 is further introduced into the casing 2, and the outer conductor of the first connection portion 21 is surrounded from the outer peripheral direction of the casing 2, and one end of the casing 2 can be turned to one end by laterally The sleeve-shaped casing 2 is fixed to the terminal of the coaxial cable Cb by compressing the cylindrical compression sleeve dielectric Di of the above-mentioned dielectric compression on the part side (see FIG. 3). In addition, a group of dielectric cylinders 5 a and 5 b are held in advance inside the second connection portion 22 of the case 2. Then, referring to FIG. 9A, the casing 2 is pressed into the inside of the outer cover 1 to complete the assembling operation.

(Construction of the object-side coaxial connector)

Next, the configuration of the object-side coaxial connector 70 according to the embodiment will be described with reference to FIG. 9A or FIG. 10. The coaxial connector 70 can be mounted on one side 91p of the printed circuit board 9p, and the coaxial plug 10 can be connected in a detachable manner. The coaxial connector 70 includes a hexahedron-shaped cover 71 and a metal bent tubular casing 72. The coaxial connector 70 includes a rod-shaped center contact 73 and a pair of disk-shaped dielectrics 74a and 74b.

The cover 71 has a storage chamber 71r on one end side. The storage chamber 71r is formed in a rectangular shape on one side of the outer cover 71, and the coaxial plug 10 can be inserted into the storage chamber 71r.

The casing 72 is configured to be fixed inside the cover 71 so as to be substantially parallel to one side surface 91p of the printed circuit board 9p, and to be bent in the axial direction so as to face the side surface 91p of the printed circuit board 9p at the other end side of the cover 71 to. More specifically, the casing 72 is configured such that one end portion of the casing 72 is disposed in the receiving chamber 71r of the casing 71; the middle portion of the casing 72 passes through and is fixed to the partition wall of the casing 71; On the other end portion side of the cover case 72, the axial direction of the cover case 2 is bent on the other end portion side of the cover 71 so as to face the one side surface 91 p of the printed circuit board 9 p. One end of the casing 72 can be connected to the second connection portion 22 of the casing 2. In addition, an end edge of the other end portion of the cover case 72 is electrically connected to one side surface 91p of the printed substrate 9p.

The center contact 73 is disposed inside the casing 72. The center contact 73 is arranged coaxially with the sleeve housing 72 along the center of the axis of the sleeve housing 72. The contact terminal 731 of the center contact 73 may be connected to the center contact 3. The front end portion of the center contact 73 is electrically connected to one side surface 91p of the printed circuit board 9p.

The coaxial plug 10 is inserted into the coaxial connector 70 from the state shown in FIG. 9A, and once connected (see FIG. 9B), the coaxial cable Cb can be electrically connected to the printed circuit board 9p.

[Role of Coaxial Cable Connector]

Next, functions and effects of the coaxial plug 10 according to the embodiment will be described. Referring to FIGS. 1A, 1B, and 11, the cylindrical sleeve 2 provided in the coaxial plug 10 has a group of dielectric cylinders 5 a and 5 b arranged separately in the axial direction of the center contact 3 and a group of dielectric cylinders. An air layer As is provided between 5a and 5b, so that the outer diameter of the sleeve can be reduced, and the coaxial plug 10 can also be miniaturized.

Moreover, referring to FIG. 10 or FIG. 11, the coaxial plug 10 of the embodiment can match the impedance of the coaxial cable Cb with the impedance of the transmission path of the coaxial plug 10 by adjusting the outer diameter of the center contact 3.

Claims (3)

A connector for a coaxial cable is used to connect the terminal of the coaxial cable. The coaxial cable has a center conductor, a dielectric surrounding the center conductor, an outer conductor surrounding the dielectric, and an insulation protection covering the outer conductor. The sleeve is provided with a hexahedron-shaped cover, a first receiving chamber having an opening on one side thereof for receiving the terminal of the coaxial cable, and a communication with the first receiving chamber on the other end side, The other side is provided with a second storage chamber into which a cylindrical object-side casing can be inserted; the cylindrical casing is arranged inside the cover from the first storage chamber to the second storage chamber, and The first connecting portion includes: the first dielectric portion can be inserted into the dielectric inside, and the outer portion of the one end portion is covered with the external conductor; and a second connecting portion is extended from the first connecting portion and can be connected with the first connecting portion. The object-side casing is connected; the cylindrical center contact is coaxially disposed inside the casing along the axis center of the casing, and has a connection portion connected to the center conductor at one end side, In another The part side has a contact piece connecting part which can be connected to the object-side center contact piece; a cylindrical compression sleeve covers the outer conductor of the first connection part from the outer peripheral direction of the sleeve outer side, and the sleeve can be One end portion of the case is compressed toward the dielectric side; and a set of disc-shaped dielectric cylinders are housed inside the sleeve, and the center contact is supported at the center portion, and the sleeve is attached to the second connection portion. In one embodiment, a group of the foregoing dielectric cylinders are separately arranged in the axial direction of the center contact, and an air layer is provided between the group of the foregoing dielectric cylinders. In the connector for a coaxial cable according to claim 1, wherein the center contact is configured to join the connection portion to the center conductor. The coaxial cable connector according to claim 1 or 2, wherein the outer cover has a locking bar on the outer wall that can be fastened to the coaxial connector on the target side.