WO2012133809A1

WO2012133809A1 - Coaxial plug

Info

Publication number: WO2012133809A1
Application number: PCT/JP2012/058662
Authority: WO
Inventors: 彰早川; 森　正樹
Original assignee: マスプロ電工株式会社
Priority date: 2011-03-31
Filing date: 2012-03-30
Publication date: 2012-10-04
Also published as: JP2012216546A

Abstract

This coaxial plug is provided with an external conductor connecting member and two central conductor connecting members. The external conductor connecting member comprises two tubular members having shapes formed by dividing a tubular body having a straight-line central axis into two sections along a cut plane tilted at a predetermined angle with respect to the central axis. Formed on the cut-plane-side ends of the two tubular members are fitting sections that are to be fitted together to join the two tubular members together while allowing the respective tubular members to be turned relative to each other with respect to the central axes with the cut planes of the respective tubular members facing each other. The two central conductor connecting members are separated at the center point where the cut plane of the external conductor connecting member and the central axes of the two tubular members intersect. Also, connecting sections, which connect the two central conductor connecting members together in a turnable manner with respect to the central axes of the respective tubular members, are provided at the dividing position, such that the two divided central conductor connecting members are positioned on the central axes of the respective tubular members even when the two tubular members are turned relative to each other with respect to the central axes.

Description

Coaxial plug

Cross-reference of related applications

This international application claims priority based on Japanese Patent Application No. 2011-0779879 filed with the Japan Patent Office on March 31, 2011, and is based on Japanese Patent Application No. 2011-0779879. The entire contents are incorporated herein by reference.

The present invention relates to a coaxial plug used for connecting a coaxial cable, a coaxial connector, a coaxial plug and the like to each other.

A coaxial plug in which a connector portion that can be connected to a coaxial cable or a coaxial plug is formed on one side of the main body and a plug portion that can be inserted with a coaxial connector such as a coaxial plug is formed on the other side is known.

In addition, this type of coaxial plug has a straight shape (straight type) in which the central axis of the connector portion and the central axis of the plug portion are arranged coaxially, or the central axis of the connector portion and the central axis of the plug portion An L-shaped one formed in an L shape so as to be orthogonal to each other is known.

For example, the following configuration has been proposed as an L-shaped coaxial plug. In this L-shaped coaxial plug, a cylindrical member constituting the outer conductor of the connector portion is formed in an L shape, and one end side of the L shape is connected to one end side of the cylindrical member constituting the outer conductor of the plug portion. insert. As for the center conductor, the center conductor of the plug portion is extended into the outer conductor of the connector portion, and the center conductor of the connector portion is rotatably connected to the tip portion (see, for example, Patent Document 1).

And according to the proposed coaxial plug, the connector portion can be rotated around the central axis of the plug portion. Therefore, even if the plug part is screwed and fixed to a connector such as a TV terminal, the drawing direction of the coaxial cable connected to the connector part can be easily changed, improving the usability of the coaxial plug. it can.

Japanese Patent No. 3682002

However, the proposed coaxial plug can change the orientation of the open end side of the connector part with respect to the plug part, but the central axis of the plug part and the central axis of the connector part are always orthogonal, and the intersection angle is It cannot be changed. For this reason, when a straight-type coaxial plug is required, that type of coaxial plug must be prepared.

Also, currently known coaxial plugs are only linear or L-shaped as described above. Therefore, for example, when a coaxial cable is connected to the TV terminal of an electronic device, the surrounding wiring is in the way, and you want to pull the coaxial cable obliquely from the TV terminal at any angle other than 90 degrees. Can not do it. Therefore, there is also a problem that the installation place of the electronic device has to be changed to ensure a coaxial cable wiring space.

In one aspect of the present invention, in a coaxial plug used to mutually connect a coaxial cable, a coaxial connector, a coaxial plug, and the like, an intersection between a central axis on one connection end side and a central axis on the other connection end side It is desirable that the angle can be set to an arbitrary angle from a straight line.

The coaxial plug of the present invention is
An outer conductor connecting member formed in a hollow cylindrical shape with a conductive material, and formed so that both ends in the central axis direction can be connected to an outer conductor of a coaxial cable, a coaxial plug, or a coaxial connector;
Two central conductor connection members formed in a rod shape with a conductive material, and formed so that both ends in the central axis direction can be connected to a central conductor of a coaxial cable, a coaxial plug, or a coaxial connector;
Two spacers made of an insulating material and holding the central conductor connection member so that the central conductor connection member is located on the central axis of the external conductor connection member in the internal space of the external conductor connection member When,
A coaxial plug with
The outer conductor connecting member includes two cylindrical members each having a shape obtained by dividing a cylindrical body having a straight central axis into two by a cut surface inclined at a predetermined angle with respect to the central axis. Two cylindrical members are fitted to each other so that the respective cylindrical members rotate relative to each other around the central axis in a state where the cut surfaces of the respective cylindrical members are opposed to each other on the cut surface side end portion A fitting part that connects each other is formed,
The two central conductor connecting members are divided from each other at a central point where the cut surface and the central axis of the two cylindrical members intersect, and the two cylindrical members are arranged around the central axis at the division position. Even if they rotate relatively, the two central conductor connecting members are placed on the central axis of each cylindrical member so that the two divided central conductor connecting members are positioned on the central axis of each cylindrical member. There is a connecting part that is pivotally connected around,
The two spacers are respectively housed in the internal spaces of the two cylindrical members, and hold the two divided central conductor connecting members on the central axis of each cylindrical member. .

The coaxial plug of the second aspect of the present invention is the coaxial plug of the present invention,
The fitting part that connects the two cylindrical members that constitute the outer conductor connecting member,
A hollow fitting protrusion projecting from the cut surface side end of one cylindrical member;
A fitting wall formed on the cut surface side end of the other cylindrical member and having a fitting hole into which the fitting protrusion can be inserted;
When the fitting protrusion is inserted into the fitting hole, the fitting protrusion is externally fitted to the tip end portion of the fitting protrusion protruding from the fitting wall to prevent the fitting protrusion from coming out of the fitting hole. A fixing ring to
It may be comprised including.

Next, the coaxial plug of the third aspect of the present invention is the coaxial plug of the second aspect of the present invention,
By connecting the two cylindrical members via the fitting portion, the fitting portion can be inserted into a space portion formed between the cut surface side end portions of the cylindrical members. A first spring member having a flat annular shape having a hollow portion and having elasticity in the central axis direction may be provided.

On the other hand, the coaxial plug of the fourth aspect of the present invention is the above-described coaxial plug of the present invention,
The connecting portion that connects the two central conductor connecting members is,
A pair of connecting pieces formed on the split end sides of the two central conductor connecting members, respectively, so as to be parallel to the cut surface;
A joining member that joins the connecting pieces so as to be rotatable around a central axis of each central conductor connecting member;
It may be comprised including.

Further, the coaxial plug of the fifth aspect of the present invention is the coaxial plug of the fourth aspect of the present invention,
In the pair of connecting pieces, a hole for joining is formed in the axial direction passing through the central axis of the corresponding central conductor connecting member,
The joining member includes a connecting pin that is inserted through a joining hole formed in the pair of connecting pieces, and a clamping member that is provided on both ends of the connecting pin and sandwiches the pair of connecting pieces. It may be constituted by.

The coaxial plug of the sixth aspect of the present invention is the coaxial plug of the fifth aspect of the present invention,
A second spring member having a flat annular shape having a hollow portion through which the connection pin can be inserted and having elasticity in the central axis direction between the pair of connection pieces to be joined by the joining member. May be provided.

In the coaxial plug of the present invention, the outer conductor connecting member is composed of two cylindrical members having a shape in which a cylindrical body having a straight central axis is divided into two by a cut surface inclined at a predetermined angle with respect to the central axis. The two cylindrical members are fitted to each other so that the cylindrical members rotate relative to each other around the central axis with the cut surfaces of the two cylindrical members facing each other. The fitting part which couple | bonds two cylindrical members together is formed.

For this reason, the outer conductor connecting member of the present invention is configured such that a pair of cylindrical members are connected to each other via a fitting portion, and each cylindrical member is relatively rotated around the central axis of each cylindrical member. For example, the crossing angle of the central axis of each cylindrical member can be changed from 0 degree (straight line) to a predetermined angle corresponding to the inclination angle of the cut surface.

That is, for example, if the inclination angle with respect to the central axis of the cut surface is set to 45 degrees, the crossing angle of the central axes of the cylindrical members can be changed in the range of 0 degrees to 90 degrees.
Therefore, according to the coaxial plug of the present invention, one open end side of the external conductor connection member is connected by relatively rotating the two cylindrical members constituting the external conductor connection member around the central axis. The pulling angle of the coaxial cable connected to the other open end side with respect to the connection target can be set to an arbitrary angle other than 90 degrees. Thereby, the usability of the coaxial plug can be improved.

According to the coaxial plug of the present invention, the center conductor connecting member is divided into two at the center point where the cut surface of the outer conductor connecting member and the center axes of the two cylindrical members intersect.
And even if two cylindrical members rotate relatively around the central axis, the two divided central conductor connecting members are positioned on the central axis of each cylindrical member at the divided position. A connecting portion is provided for connecting the two central conductor connecting members so as to be rotatable around the central axis of each cylindrical member.

The central conductor connecting member divided into two is held by a spacer so as to be positioned on the central axis of each cylindrical member in the internal space of each cylindrical member constituting the outer conductor connecting member. Is done.
Accordingly, the two cylindrical members constituting the outer conductor connecting member as described above are rotated relative to each other around the central axis of each cylindrical member, and the crossing angle of the central axis of each cylindrical member is 0 degree ( When the angle is changed from a straight line) to a predetermined angle corresponding to the inclination angle of the cut surface, the crossing angle of the central axis of the central conductor connecting member divided into two also changes in the same manner. It is always arranged on the central axis of each central member via the spacer.

Therefore, according to the coaxial plug of the present invention, the drawing angle of the other connection target (coaxial cable or the like) with respect to one connection target can be arbitrarily set as described above, and the electrical characteristics deteriorate with the change in the angle. Can be prevented.

Here, the fitting portion that connects the two cylindrical members constituting the outer conductor connecting member is a hollow fitting at the cut surface side end of one cylindrical member as in the second aspect of the present invention. A mating projection is provided, a fitting wall having a fitting hole into which the fitting projection can be inserted is formed at the end of the other cylindrical member on the cut surface side, and the fitting projection is inserted into the fitting hole. It is good to comprise so that it may prevent that a fitting protrusion pulls out from a fitting hole by providing a fixing ring in the front-end | tip part of the fitting protrusion which protrudes from a fitting wall when it fits.

That is, if it does in this way, cylindrical members can be easily connected now by a fixing ring, and the man-hour at the time of manufacture can be reduced.
Moreover, when the fitting portion is configured as in the second aspect of the present invention, the fixing ring can prevent the fitting protrusion from coming out of the fitting hole and disconnecting the cylindrical members, It is conceivable that a space is formed at the end portion of each tubular member on the cut surface side, and each tubular member swings at the connecting portion (in other words, rattling).

Therefore, in order to prevent this rocking (rattle), as in the third aspect of the present invention, the spring material (the first member) is formed in the space formed between the cut surface side ends of the respective cylindrical members. 1 spring material) to prevent the rattling. In addition, what is necessary is just to use this 1st spring material which has elasticity in a central axis direction in the flat annular | circular shape which has a hollow part which can penetrate a fitting part.

Next, in the coaxial plug according to the fourth aspect of the present invention, a connecting portion that connects the two central conductor connecting members includes a pair of connecting pieces respectively formed on the divided end side of each central conductor connecting member, A connecting member for connecting the connecting pieces to each other so as to be rotatable around the central axis of the central conductor connecting member, and each connecting piece is cut to divide the outer conductor connecting member into two cylindrical members. It is formed to be parallel to the surface.

For this reason, when the two cylindrical members constituting the outer conductor connecting member are rotated relative to each other around the central axis of each cylindrical member, the pair of connecting pieces are connected by the joining member. The center point is rotated around the central axis of each cylindrical member, and is always disposed on the central axis of each cylindrical member.

And according to the structure of this 4th aspect of this invention, compared with the case where two external conductor connection members are rotatably connected by universal joints, such as a ball joint, the structure of a connection part is simple. In other words, the durability can be increased.

In this case, as in the fifth aspect of the present invention, the joining member is constituted by a connecting pin and a clamping member provided on both ends of the connecting pin, and the connecting pin is formed in a pair of connecting pieces. The pair of connecting pieces may be clamped by the clamping member through the hole.

However, in this case, it is desirable that the holes drilled in the pair of connecting pieces be formed in the axial direction passing through the central axis of the central conductor connecting member corresponding to each connecting piece.
Further, in this case, as the joining member, for example, a bolt having a rod-shaped screw portion serving as a connecting pin and a head serving as one clamping member, and a bolt screwed into the bolt screw portion, It can comprise from the nut (clamping member) which clamps a pair of connection piece.

Also, when using bolts in this way, instead of nuts, C-rings (C-shaped rings) or E-rings (E-shaped) that can be fitted to the side walls of the bolts on the opposite side of the bolt heads. A mold ring) may be used. However, in this case, the bolt may be formed with a fitting groove capable of fitting a C-ring or an E-ring instead of the thread.

Further, the joining member is constituted by a rivet having a head portion that serves as one clamping member, and the rivet is inserted into holes formed in the pair of connecting pieces so that the diameter opposite to the head portion is increased. Thus, a sandwiching member may be formed to sandwich the pair of connecting pieces.

In addition, when the joining member is configured as in the fourth aspect of the present invention so as to sandwich the pair of connecting pieces, the connecting portion is rotated at the time of use, so that the joining of the connecting pieces is loosened. It is conceivable that the two outer conductor connecting members swing (rattle) at the connecting portion.

And in order to prevent this rocking | fluctuation (rattle), the hollow part which can insert a connection pin between a pair of connection pieces joined by a joining member like the 6th aspect of this invention. It is good to provide the 2nd spring member which is flat annular shape which has and has elasticity in a central axis direction.

It is explanatory drawing showing the external appearance of the coaxial cable provided with the coaxial plug of embodiment. It is sectional drawing showing the internal structure of a coaxial plug. It is explanatory drawing showing the structure of one cylindrical member (plug part) of a coaxial plug. It is explanatory drawing showing C ring and a conical spring used for the connection of two cylindrical members. It is explanatory drawing showing the structure of a center conductor connection member. It is explanatory drawing showing the structure of the washer provided in the junction part of a center conductor connection member. It is explanatory drawing showing the modification of the joining member which joins a center conductor connection member. It is explanatory drawing showing the structure of the coaxial plug of the PAL / SECAM system to which this invention was applied. It is sectional drawing showing the internal structure of the straight-shaped coaxial plug comprised using the connection system of this invention.

DESCRIPTION OF SYMBOLS 1 ... Coaxial plug, 2 ... Coaxial cable, 10 ... Connector part, 12 ... Cylindrical member, 13 ... Cable insertion part, 14 ... Cable connection part, 16 ... Plug connection part, 17 ... Fitting hole, 18 ... Fitting wall , 20 ... C-ring, 30 ... plug part, 30 ... central conductor connecting member, 32 ... cylindrical member, 34 ... opening, 36 ... connector connecting part, 38 ... fitting protrusion, 40 ... groove part, 42 ... protrusion, 44 ... Slip prevention part, 50 ... Center conductor connection member, 52 ... Core wire insertion part, 54 ... Connection part, 56 ... Connection piece, 62 ... Center contact part, 66 ... Connection piece, 70 ... Rivet, 71 ... Washer, 72,74 ... wave washer, 75, 77 ... bolt, 76 ... E-ring, 78 ... nut, 82 ... spacer.

Embodiments of the present invention will be described below with reference to the drawings.
First, FIGS. 1A to 1C are explanatory views showing the appearance of a coaxial cable provided with the coaxial plug 1 of this embodiment. 1A is a side view showing a state in which the coaxial plug 1 is L-shaped, FIG. 1B is an explanatory view showing a state in which the coaxial plug 1 shown in FIG. 1A is viewed from the distal end side (right direction in the figure), FIG. These are side views showing the state which made the coaxial plug 1 the linear form. FIG. 2 is a cross-sectional view showing the internal structure of the coaxial plug 1.

As is apparent from FIGS. 1A to 1C, the coaxial plug 1 of this embodiment is attached to the tip of the coaxial cable 2 and is provided in a television terminal or a television broadcast receiver provided on a wall surface of a building. For connecting to F-type plugs (connectors) such as antenna terminals.

And the coaxial plug 1 of this embodiment is comprised from the connector part 10 to which the coaxial cable 2 is connected, and the plug part 30 for mounting | wearing with an F-type plug. The coaxial plug 1 can have a linear shape (in other words, a straight type) in which the central axis of the plug portion 30 is coaxial with respect to the central axis of the connector portion 10 extending from the coaxial cable 2 (see FIG. 1C). Also, it can be L-shaped in which the central axis of the plug part 30 is orthogonal to the central axis of the connector part 10 (see FIG. 1A).

That is, first, as shown in FIG. 2, the coaxial plug 1 of this embodiment includes a pair of

cylindrical members

12 and 32 as external conductor connecting members that connect the external conductors of the coaxial cable 2 and the F-type plug. Prepare.

Among these, the one cylindrical member 12 constitutes the connector portion 10. The cylindrical member 12 is inserted between the insulating member around the core wire of the coaxial cable 2 and the outer conductor around the insulating member on one end side in the central axis direction of the cylindrical member 12 and connected to the outer conductor of the coaxial cable 2. The cable connection part 14 provided with the cable insertion part 13 for doing is provided. Further, the tubular member 12 includes a plug connection portion 16 that connects the plug portion 30 constituted by the other tubular member 32 to the other end side in the central axis direction of the tubular member 12.

In FIG. 1A and FIG. 1C, the coaxial cable 2 is inserted into the cable insertion portion 13 to protect the entire cable connection portion 14 including the distal end portion of the coaxial cable 2 after the coaxial plug 1 is connected to the coaxial cable 2. It represents the state covered with a cover. FIG. 2 shows a state where the protective cover is removed.

The opposite side of the cable connecting portion 14 from the cable insertion portion 13 is press-fitted into the end of the plug connecting portion 16 opposite to the cylindrical member 32. In addition, the cable connection part 14 and the plug connection part 16 which comprise this cylindrical member 12 are hollow cylindrical shapes, and each is integrally formed by the conductive metal in the hollow cylindrical shape.

Further, the other cylindrical member 32 constitutes the plug portion 30. The cylindrical member 32 includes an opening 34 having an inner diameter that is large to be attached to the F-type plug at one end side in the central axis direction of the cylindrical member 32. The tubular member 32 includes a connector connecting portion 36 for connecting to the plug connecting portion 16 of the tubular member 12 on the other end side in the central axis direction of the tubular member 32.

The opening 34 and the connector connecting portion 36 have a hollow cylindrical shape and are integrally formed of a conductive metal.
Further, the opening end surfaces of the plug connecting portion 16 of the cylindrical member 12 and the connector connecting portion 36 of the cylindrical member 32 are arranged so that the cylindrical bodies whose central axes are straight are at a predetermined angle (in this embodiment, with respect to the central axis). It has an end face shape that is divided into two by a cut surface inclined at 45 degrees.

For this reason, if the opening end surfaces of the plug connection portion 16 and the connector connection portion 36 are overlapped with each other in a state where the central axes of the tubular member 12 and the tubular member 32 are aligned, the tubular member 12 and the tubular member 32 are overlapped. As a result, a linear cylindrical body is formed. On the other hand, if the opening end surfaces of the plug connection portion 16 and the connector connection portion 36 are overlapped with each other in a state where the central axes of the tubular member 12 and the tubular member 32 are orthogonal to each other, the tubular member 12 and the tubular member 32 Thus, an L-shaped cylindrical body is formed.

Therefore, in the present embodiment, in order to continuously change the coaxial plug 1 from such a linear shape to an L-shape, the coaxial plug 1 is fitted into the opening ends of the plug connection portion 16 and the connector connection portion 36 to form a cylindrical shape. The fitting part which connects the

members

12 and 32 is formed. By forming such a fitting portion, the

cylindrical members

12 and 32 are relative to each other around the central axis in a state where the opening end surfaces of the

cylindrical members

12 and 32 that are the cut surfaces of the cylindrical body are overlapped with each other. Can be rotated.

This fitting portion has a hollow fitting projection 38 protruding from the opening end of the connector connecting portion 36, and has a fitting hole 17 for inserting the fitting projection 38 into the opening end of the plug connecting portion 16. It is configured by forming the fitting wall 18.

And the connection of the

cylindrical members

12 and 32 by this fitting part is performed in the following procedures. That is, first, the fitting protrusion 38 is inserted into the fitting hole 17 so that the tip portion of the fitting protrusion 38 protrudes from the fitting wall 18. Thereafter, the C ring 20 (see FIG. 4A) is fitted into a groove 40 (see FIGS. 3A-3B) formed in advance on the periphery of the tip end portion of the protruding fitting protrusion 38.

Therefore, in the coaxial plug 1 of the present embodiment, if the pair of

cylindrical members

12 and 32 as the outer conductor connecting members are relatively rotated around the central axis, the plug connecting portion 16 and the connector connecting portion 36 are used. With the opening end surfaces of the

cylindrical members

12 and 32 held in an overlapping manner, the crossing angle of the central axes of the

cylindrical members

12 and 32 can be changed from 0 degrees (straight line) to 90 degrees.

In addition, when the

cylindrical members

12 and 32 are connected to each other as described above, in the present embodiment, the annular metal plate shown in FIG. 4B is formed in a conical shape around the opening end of the connector connecting portion 36. A conical spring 22 can be provided. As a result, it is possible to prevent the so-called rattling from occurring due to the

cylindrical members

12 and 32 swinging around the connecting portion.

In order to prevent the rattling more reliably, in this embodiment, a pair of protrusions 42 are provided around the opening end of the connector connecting portion 36 of the tubular member 32 (see FIGS. 3A-3B). ). In particular, in the present embodiment, when the pair of protrusions 42 are connected to the

cylindrical members

12 and 32 in an L shape, positions where the stress is most applied from the cylindrical member 12 (in other words, each cylindrical shape). (Position on a plane passing through the central axis of the members 12 and 32).

For this reason, according to the coaxial plug 1 of the present embodiment, the connector portion 10 and the plug portion 30 can be better prevented from swinging relative to each other when being L-shaped, and these portions can be firmly fixed. .

Further, as shown in FIGS. 3A to 3B, a non-slip portion 44 made of non-slip unevenness is formed on the peripheral side wall of the cylindrical member 32 constituting the plug portion 30. For this reason, when the user puts the plug portion 30 with his / her finger and attaches it to the F-type plug or the like, it is possible to prevent the finger from slipping and making the attaching operation difficult.

3A is a front view of the cylindrical member 32 constituting the plug portion 30, and FIG. 3B is a side view thereof.
Thus, in the coaxial plug 1 of the present embodiment, the plug portion 30 is rotated around the central axis with the coaxial plug 1 attached to the tip of the coaxial cable 2. Thereby, as shown to FIG. 1A and FIG. 1C, the protrusion angle of the plug part 30 from the connector part 10 can be changed continuously from 0 degree (straight line) to 90 degree | times. It should be noted that the central conductor connecting member provided in the coaxial plug 1 is also desired to be able to change the angle in conjunction with the outer conductor connecting member.

Then, next, the center conductor connection member 50 of this embodiment comprised in that way is demonstrated.
The coaxial plug 1 of this embodiment is for connecting a coaxial cable 2 to one end and connecting an F-type plug to the other end. Therefore, a core wire insertion portion 52 that sandwiches the core wire is formed on one end side (connector portion 10 side) of the center conductor connecting member 50 by inserting the core wire of the coaxial cable 2. Further, the other end side (plug part 30 side) of the center conductor connecting member 50 is projected into the opening part 34 of the plug part 30 and connected to the center conductor of the plug inserted into the opening part 34. A rod-shaped center contact portion 62 is formed.

In the present embodiment, the outer conductor connecting portion is divided into two

cylindrical members

12 and 32. Therefore, the center conductor connecting member 50 is also divided into two parts, the core wire insertion part 52 and the center contact part 62. These

portions

52 and 62 are held by insulating

synthetic resin spacers

82 and 84 provided in the

cylindrical members

12 and 32, and are positioned on the central axes of the

cylindrical members

12 and 32. Yes.

The core wire insertion part 52 and the center contact part 62 are each formed by press-molding a metal plate made of a conductive metal.
Further, as shown in FIG. 5, connecting

portions

54 and 64 are extended from the core wire insertion portion 52 and the center contact portion 62, respectively. The connecting

portions

54 and 64 are the open end face of the plug connecting portion 16 of the tubular member 12 and the connector connecting portion 36 of the tubular member 32 (in other words, the aforementioned cut surface of the tubular body) and the

tubular members

12 and 32. At the center point O where the central axis intersects, the core wire insertion portion 52 and the central contact portion 62 are rotatably connected around the central axis A orthogonal to the opening end face.

A pair of connecting

pieces

56 and 66 for connecting the core wire insertion portion 52 and the center contact portion 62 rotatably as described above are formed at the tips of the connecting

portions

54 and 64. The pair of connecting

pieces

56 and 66 are arranged in parallel with the opening end surfaces of the plug connecting portions 16 and the connector connecting portions 36 of the respective

cylindrical members

12 and 32 with the center point O interposed therebetween.

Further, in the connecting

pieces

56 and 66, holes for inserting a connecting member for rotatably connecting the connecting

pieces

56 and 66 on the central axis A passing through the center point O and orthogonal to the opening end face (see FIG. (Not shown) is perforated.

These connecting

pieces

56 and 66 are rotatably joined by inserting a rivet 70 as a joining member into the hole and expanding the open end of the rivet.
Further, a

wave washer

72 or 74 shown in FIG. 6B or 6C is provided between the connecting piece 56 and the connecting piece 66. As a result, when the connecting

pieces

56 and 66 are joined by the rivet 70 as described above, the connecting pieces 56 and 66 (and the core wire insertion portion 52 and the center contact portion 62) hardly rotate at the joined portion. And, conversely, the joint is not loosened.

The wave washers 72 and 74 are configured as spring materials that can be deformed in the direction of the central axis thereof by bending the flat washer 71 shown in FIG. 6A. The wave washer 72 shown in FIG. 6B is formed by bending so that the central axis side is high and the peripheral edge is low.

In addition, the wave washer 74 shown in FIG. 6C is curved so that the dividing points that divide the entire 360 ° around the central axis of the washer 71 into 6 parts are alternately concave and convex as shown in FIG. 6D. Is. FIG. 6E is a perspective view of the washer 71 shown in FIG. 6D. As is apparent from the perspective view of FIG. 6E, the corrugated shape has concave and convex portions formed on the washer surface at intervals of 60 degrees on the entire circumference. In FIG. 6D, the concave portion formed on the washer surface is indicated by A, and the convex portion formed on the washer surface is indicated by B.

Thus, in the coaxial plug 1 of the present embodiment, the central conductor connecting member 30 is also divided into two corresponding to the two

cylindrical members

12 and 32 constituting the outer conductor connecting member. The divided core wire insertion part 52 and the center contact part 62 are formed by connecting

pieces

56 and 66 formed at the tips of the connecting

parts

54 and 64, respectively, and a rivet for joining the two connecting

pieces

56 and 66 together. 70. Thereby, the core wire insertion part 52 and the center contact part 62 are the centers at which the opening end surfaces of the plug connection part 16 and the connector connection part 36 of the respective

cylindrical members

12 and 32 intersect with the central axes of the respective

cylindrical members

12 and 32. At the point O, it can rotate around the central axis A orthogonal to the opening end face.

Therefore, according to the coaxial plug 1 of the present embodiment, the

cylindrical members

12 and 32 constituting the outer conductor connecting member are relatively rotated around the central axis thereof, so that the central axis of each

cylindrical member

12 and 32 is When the crossing angle is changed, the core wire insertion portion 52 and the center contact portion 62 also rotate following the change. The core wire insertion portion 52 and the center contact portion 62 are always disposed on the center axis of each

cylindrical member

12, 32.

Therefore, according to the coaxial plug 1 of the present embodiment, as shown in FIGS. 1A and 1C, the plug portion 30 is rotated around the central axis in a state where the plug portion 30 is attached to the tip end of the coaxial cable 2. The drawing direction (angle) of the coaxial cable 2 from the F-type plug to which the 30 is attached can be arbitrarily set in the range from 0 degrees (straight line) to 90 degrees, and the electrical characteristics deteriorate with the change of the angle. Can be prevented.

A

wave washer

72 or 74 shown in FIG. 6B or 6C is provided between the connecting

pieces

56 and 66 for connecting the core wire insertion portion 52 and the center contact portion 62, and rivets are provided in the holes of the

wave washer

72 or 74. 70 is inserted and the

connection pieces

56 and 66 are joined. With such a configuration, it is possible to prevent the rotation of the core wire insertion portion 52 and the center contact portion 62 at the joint portion.

In addition, since the

wave washers

72 and 74 also function as spring materials, the connection between the connecting

pieces

56 and 66 is loosened, and the core wire insertion portion 52 and the center contact portion 62 oscillate inside the coaxial plug 1 (rattle). ), And thus the durability of the coaxial plug 1 can be improved.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various aspect can be taken in the range which does not deviate from the summary of this invention.
For example, in the embodiment described above, the rivet 70 is used as the joining member that joins the connecting

pieces

56 and 66 in a rotatable manner. However, in the present invention, as shown in FIG. 7A, a connecting piece is formed using a bolt 75 and an E-ring 76 that fits into a groove formed on the outer periphery of the tip of the bolt 75 to prevent the bolt 75 from coming off. 56 and 66 may be joined to each other, or as shown in FIG. 7B, the connecting

pieces

56 and 66 may be joined to each other with a bolt 77 and a nut 78 formed with threads.

In the above embodiment, the F-type coaxial plug 1 provided with the connector portion 10 to which the coaxial cable 2 can be connected at one end and the plug portion 30 to which the F-type plug can be attached at the other end has been described. However, the present invention may be a coaxial plug provided with a plug portion 30 similar to that of the above embodiment at one end and an F-type plug-shaped terminal at the other end, or provided with plug portions 30 at both ends. Even a coaxial plug can be applied.

The present invention also relates to a coaxial plug provided with an F-type coaxial plug defined by the Japan Electronic Machinery Manufacturers Association (EIAJ) “RC-5220”, “RC-5223A”, etc., as in the above embodiment. For example, the present invention can be applied to the following coaxial connectors (a) to (d). (A) A coaxial connector (specifically, a coaxial connector defined by “61169-2” of the IEC standard) used as an RF (Radio-frequency) connector for transmitting PAL and SECAM television broadcast signals.
(B) A high-frequency coaxial BNC 75Ω connector specified by “RC-5233” of EIAJ.
(C) A high frequency coaxial C02 type connector (so-called BNC connector) defined by “C-5412” of Japanese Industrial Standard (JIS) or “C-39012” of MIL Standard.
(D) A pin plug / jack for electronic equipment (so-called RCA plug) defined by “RC-5231A” of EIAJ.

For example, FIGS. 8A to 8D show the configuration of the coaxial plug 1 when the present invention is applied to an RF connector used to transmit a PAL / SECAM television broadcast signal.
As is clear from the cross-sectional view of FIG. 8A, in this case, the diameters of the opening 34 and the center contact 62 constituting the plug 30 are different from those described in the above embodiment, but the plug 30 and the connector 10 The configurations of the plug connection portion 16 and the connector connection portion 36 that are connected to each other so as to be rotatable around the central axis, and the configurations of the

connection portions

64 and 54 that connect the center contact portion 62 and the core wire insertion portion 52 are described above. What is necessary is just to comprise similarly to a form.

In the PAL / SECAM coaxial plug 1 shown in FIGS. 8A-8D, the diameters of the opening 34 and the center contact 62 are not only different from those described in the above embodiment, but the coaxial cable in the cable connecting portion 14 is also used. The connection form with the two outer conductors is different.

In other words, in the PAL / SECAM coaxial plug 1 shown in FIGS. 8A-8D, the cable connecting portion 14 can insert the coaxial cable 2 with the outer conductor of the coaxial cable 2 removed and the outer conductor exposed. It is configured.

When the coaxial cable 2 is connected to the cable connecting portion 14, as shown by a dotted line in FIG. 8A, the cable connecting portion 14 is compressed from the outside and reduced in diameter to, for example, a hexagonal shape. The portion 14 and the outer conductor of the coaxial cable 2 are electrically connected.

Thus, if the coaxial plug 1 of the PAL / SECAM system is configured, the coaxial plug 1 can be formed into a linear shape (in other words, a straight type) as in the above embodiment (see FIG. 8C), or an L type. (See FIG. 8B).

8D is an end view of the linear RF connector shown in FIG. 8C as viewed from the plug portion 30 side.
On the other hand, in the above embodiment, the shape of the coaxial plug 1 is changed from the straight type to the L type or vice versa by relatively rotating the connector part 10 and the plug part 30 of the coaxial plug 1 around the central axis. Although described as being deformed, if the rotation method of the present invention is used, the connector portion 10 and the plug portion 30 are maintained in the straight coaxial plug 1 while maintaining the straight shape as illustrated in FIG. Can be made relatively rotatable around the central axis.

Claims

An outer conductor connecting member formed in a hollow cylindrical shape with a conductive material, and formed so that both ends in the central axis direction can be connected to an outer conductor of a coaxial cable, a coaxial plug, or a coaxial connector;
It is formed of a conductive material in the shape of a rod, and both end sides in the central axis direction are composed of two central conductor connecting members formed so as to be connectable to the central conductor of a coaxial cable, coaxial plug, or coaxial connector, and an insulating material. Two spacers for holding the central conductor connection member so that the central conductor connection member is located on the central axis of the external conductor connection member in the internal space of the conductor connection member;
A coaxial plug with
The outer conductor connecting member includes two cylindrical members each having a shape obtained by dividing a cylindrical body having a straight central axis into two by a cut surface inclined at a predetermined angle with respect to the central axis. Two cylindrical members are fitted to each other so that the respective cylindrical members rotate relative to each other around the central axis in a state where the cut surfaces of the respective cylindrical members are opposed to each other on the cut surface side end portion A fitting part that connects each other is formed,
The two central conductor connecting members are divided from each other at a central point where the cut surface and the central axis of the two cylindrical members intersect, and the two cylindrical members are arranged around the central axis at the division position. Even if they rotate relatively, the two central conductor connecting members are placed on the central axis of each cylindrical member so that the two divided central conductor connecting members are positioned on the central axis of each cylindrical member. There is a connecting part that is pivotally connected around,
The two spacers are respectively housed in the internal spaces of the two cylindrical members, and hold the two divided central conductor connecting members on the central axis of each cylindrical member. Coaxial plug.
The fitting part that connects the two cylindrical members that constitute the outer conductor connecting member,
A hollow fitting protrusion projecting from the cut surface side end of one cylindrical member;
A fitting wall formed on the cut surface side end of the other cylindrical member and having a fitting hole into which the fitting protrusion can be inserted;
When the fitting protrusion is inserted into the fitting hole, the fitting protrusion is externally fitted to the tip end portion of the fitting protrusion protruding from the fitting wall to prevent the fitting protrusion from coming out of the fitting hole. A fixing ring to
The coaxial plug according to claim 1, comprising:
By connecting the two cylindrical members via the fitting portion, the fitting portion can be inserted into a space portion formed between the cut surface side end portions of the cylindrical members. The coaxial plug according to claim 2, wherein a first spring member having a flat annular shape having a hollow portion and having elasticity in a central axis direction is provided.
The connecting portion that connects the two central conductor connecting members is,
A pair of connecting pieces formed on the split end sides of the two central conductor connecting members, respectively, so as to be parallel to the cut surface;
A joining member that joins the connecting pieces so as to be rotatable around a central axis of each central conductor connecting member;
The coaxial plug according to any one of claims 1 to 3, further comprising:
In the pair of connecting pieces, a hole for joining is formed in the axial direction passing through the central axis of the corresponding central conductor connecting member,
The joining member includes a connecting pin that is inserted through a joining hole formed in the pair of connecting pieces, and a holding member that is provided on both ends of the connecting pin and holds the pair of connecting pieces. The coaxial plug according to claim 4.
A second spring member having a flat annular shape having a hollow portion through which the connection pin can be inserted and having elasticity in the central axis direction between the pair of connection pieces to be joined by the joining member. The coaxial plug according to claim 5, wherein the coaxial plug is provided.