JP2006221968A - Connector for high-frequency coaxial cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for a high frequency coaxial cable in which by simplifying the process at installation, assembling mistake and component breakage are eliminated, angle adjustment of a bent component having cylindrical part can be made, and a special tool is not required for working of the outer conductor of the coaxial cable. <P>SOLUTION: This is the connector 1 for the high frequency coaxial cable which has a contact plug outer conductor part 2a installed on a high frequency coaxial cable 29 having a coaxial outer conductor 29a formed with a spiral concavo-convex. The connector 1 has a clamp 20 which is conducted to the coaxial outer conductor 29a and is screwed to the end part 29f of the coaxial outer conductor 29a along the concavo-convex, and a guide 17 which houses the clamp 20 to the contact plug outer conductor part 2a and screws to the contact plug outer conductor part 2a. When the guide 17 is tightened to the contact plug outer conductor part 2a, the end part of the coaxial outer conductor 29a is interposed by the contact plug outer conductor part 2a and the clamp 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a plug to be attached to a coaxial cable, and more particularly to a high-frequency coaxial cable connector in which an outer conductor structure is formed with spiral irregularities at a predetermined pitch in the longitudinal direction.

  FIG. 12 shows a state in which a conventional coaxial cable connector is attached to the coaxial cable.

  As shown in the figure, the coaxial cable connector 50 is composed of a mating joint 50y connected to a mating plug (not shown) and a cable connecting section 50z connected to a cable extending from a direction perpendicular to the mating joint 50y. Formed into a mold. On the inner side of the cable connection portion 50z, spiral irregularities 52s are provided.

  The coaxial cable 65 includes a coaxial outer conductor 65a in which a spiral unevenness is formed so as to be screwed with the unevenness 52s inside the coaxial cable connector 50. The cable connection portion 50z is screwed into the guide 52 so that the spiral unevenness of the coaxial cable 65 and the unevenness 52s of the coaxial cable connector 50 are engaged with each other, and the coaxial cable connector 50 is attached to the coaxial cable 65. .

  The coaxial cable connector 50 includes a first plug outer conductor 51, a guide 52 having a spiral unevenness 52s, a second plug outer conductor 53, a first insulator 54, and a first insulator 54. Plug center conductor 55, first O ring 56, second O ring 57, second plug center conductor 58, third O ring 59, second insulator 60, It comprises a third plug outer conductor 61, a fastening cap nut 62, a fourth O-ring 63, and a fifth O-ring 64.

  As can be seen from the drawing, the second connector outer conductor 53 and the third connector outer conductor 61 are orthogonal to each other, so that the coaxial cable connector 50 has a hook shape (L shape).

  When the coaxial cable connector 50 is attached to the coaxial cable 65, the guide 52 is screwed and fixed to the coaxial cable 65, and then the coaxial outer conductor 65a of the coaxial cable 65 is guided by using a special tool for processing. After the taper process of 45 degrees is performed along the shape of the portion 52a of 52, the cable connecting portion 50z of the coaxial cable connector 50 is rotated and screwed into the guide 52, and the first plug outer conductor 51 and the guide 52 are rotated. Tighten and assemble.

  The prior art document information related to the invention of this application includes the following.

JP-A-8-138803

  However, the conventional coaxial cable connector 50 needs to use a special tool to process the coaxial outer conductor 65a into a tapered shape when attached.

  Moreover, since the connector 50 for coaxial cables is fixed in the state screwed in the coaxial cable 65, there existed a problem that the direction of the other party junction part 50y could not be adjusted.

  Therefore, the object of the present invention is to eliminate the drawbacks of the prior art described above, eliminate the need for special tools for coaxial cable outer conductor processing, simplify the installation process, and adjust the angle of the bent part having a cylindrical portion. An object of the present invention is to provide a connector for a high-frequency coaxial cable.

  The present invention has been devised to achieve the above object, and the first invention is attached to a high-frequency coaxial cable having a coaxial outer conductor formed with spiral irregularities and is electrically connected to the coaxial outer conductor. A connector for a high-frequency coaxial cable having a plug outer conductor portion, wherein a clamp is screwed along the unevenness into an end portion of the coaxial outer conductor and accommodated in the plug outer conductor portion, and the plug outer conductor portion. And a guide for pressing the clamp toward the plug external conductor by screwing to the plug external conductor, and when the guide is tightened to the plug external conductor by the screw, the end of the coaxial external conductor Is a connector for a high-frequency coaxial cable that is sandwiched between the plug outer conductor portion and the clamp.

  In the second invention, the clamp is formed of a conductor member.

  According to a third aspect of the present invention, the plug outer conductor portion is formed in a bowl shape.

  According to the present invention, it is possible to obtain a high-frequency coaxial cable connector that does not require a special tool for processing the outer conductor of the coaxial cable, simplifies the mounting process, and can adjust the angle of the bent part having the cylindrical portion.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a preferred embodiment of the invention will be described with reference to the accompanying drawings.

  FIG. 1 is a side sectional view of a high-frequency coaxial cable connector showing the present embodiment. FIG. 2 is a front view of the high frequency coaxial cable connector.

  The structure of the connector will be described with reference to FIGS.

  As shown in the figure, the connector 1 for a high-frequency coaxial cable is attached to a high-frequency coaxial cable 29 having a coaxial outer conductor 29a formed with spiral irregularities, and has a plug outer conductor portion 2a that conducts to the coaxial outer conductor 29a. A clamp 20 that is screwed into the coaxial outer conductor 29a along the unevenness of the coaxial outer conductor 29a appearing at the end of the high-frequency coaxial cable 29 and accommodated in the plugging outer conductor portion 2a, and a plugging outer conductor portion And a guide 17 that presses the clamp 20 toward the plug outer conductor portion 2a by screwing to the plug outer conductor portion 2a, and the end of the coaxial outer conductor 29a when the guide 17 is screwed to the plug outer conductor portion 2a by screwing. The portion 29f (see FIG. 8) is sandwiched between the plug outer conductor portion 2a and the clamp 20.

  As shown in the figure, the high-frequency coaxial cable connector 1 includes a mating joint 1y connected to a mating plug (not shown) and a cable joint 1z connected to a cable extending from the direction perpendicular to the mating joint 1y. It is formed in a bowl shape.

  As shown in the side sectional view of FIG. 3, the clamp 20 includes a cylindrical portion 20q having a constant outer diameter, and a cylindrical portion 20p located at one end of the cylindrical portion 20q and having a larger outer diameter than the cylindrical portion 20q. Is a conductor member formed integrally. A stepped surface (hereinafter referred to as a pressure receiving surface) 20r facing the cylindrical portion 20q is formed at the boundary between the cylindrical portion 20p and the cylindrical portion 20q due to the difference in outer diameter between the two. The pressure receiving surface 20r comes into contact with an end portion 17t (see FIG. 9) of a guide 17 described later.

  On the inner surface of the cylindrical portion 20q, spiral irregularities 20a are formed at a predetermined pitch. The spiral unevenness 20a corresponds to the unevenness of the coaxial outer conductor 29a of the high-frequency coaxial cable 29. The cylindrical portion 20p has a smooth inner surface having a large inner diameter and no unevenness compared to the inner diameter of the inner surface of the cylindrical portion 20q, and the inner surface from the end 20t of the cylindrical portion 20p to a stepped surface 20u described later. A cylindrical space is formed.

  At the boundary between the cylindrical portion 20p and the cylindrical portion 20q, a step surface (hereinafter referred to as a pressing surface) 20u facing the cylindrical portion 20p is formed due to the difference in inner diameter between the two. The pressing surface 20u comes into contact with an end portion 29f (see FIG. 10) of a coaxial outer conductor 29a described later.

  When the clamp 20 formed in this way is viewed from the end 20t side of FIG. 3, it can be seen that the pressing surface 20u as shown in the front view of FIG.

  Next, FIG. 5 shows a side sectional view of the guide.

  The guide 17 is a hollow member formed in a substantially cylindrical shape. The guide 17 has a threaded portion 17p with a thread groove 17a formed on the outer side, and the guide 17 rotates when the guide 17 is screwed into the connector body 2 without an outer diameter larger than the threaded portion 17p. The rotation support portion 17q for rotating the screw support portion 17q and the rotation support portion 17q are integrally formed.

  A first O-ring 18 is mounted along the circumferential direction on the cylindrical inner surface of the rotation support portion 17q, and the first O-ring 18 extends along the circumferential direction of the outer surface of the cylinder at the boundary between the screwing portion 17p and the rotation support portion 17q. Two O-rings 19 are attached. The first O-ring 18 and the second O-ring 19 are formed of an elastic body such as rubber, and cushion against other members that come into contact with the guide 17 to prevent moisture and the like from entering the connector. It is a shape member.

  The end 17t of the threaded portion 17p is a portion that contacts the pressure receiving surface 20r of the clamp 20 shown in FIG. 3 and presses the pressure receiving surface 20r when the guide 17 is screwed into the connector body 2.

  Next, a side sectional view of the connector main body is shown in FIG.

  The members of the connector main body 2 are roughly composed of members that form the plug outer conductor portion 2 a, members that form the plug central conductor, an insulator, and a third O-ring 27. A clamp 20 and a guide 17 as described above are attached to the connector body 2 to form the high frequency coaxial cable connector 1.

  As shown in the figure, the plug outer conductor portion 2 a includes the first plug outer conductor 16, the second plug outer conductor 26, the third plug outer conductor 28, and the fourth plug outer conductor 21. And is configured.

  The insulator includes a first insulator 22 and a second insulator 25. The plug center conductor includes a first plug center conductor 23 and a second plug center conductor 24. The

  The first plug outer conductor 16 is a cylindrical member made of a conductor and having a bend. One end of the first plug outer conductor 16 is integrally connected to the cable joint 1z. The other end of the first plug outer conductor 16 forms a part of the mating joint 1y and a third plug outer conductor 28 is attached. The first plug outer conductor 16 and the third plug outer conductor 28 form a bowl-shaped shape of the high frequency coaxial cable connector 1.

  One end of the first plug outer conductor 16 is provided with a fixed length of a thread groove 16a to be screwed with the thread groove 17a of the guide 17, and the inner diameter is slightly narrower inward at the back. A step is provided, and the ring-shaped fourth plug outer conductor 21 is held at this step. Further, a step is provided that is slightly narrower in the back, and the first insulator 22 is held at this step.

  The third plug outer conductor 28 is formed of a conductive cylindrical member having substantially the same diameter as the first plug outer conductor 16 and has a flange formed on the outer periphery. The second plug outer conductor 26 is hooked on the hook, and the second plug outer conductor 26 is rotatably supported. The second plug outer conductor 26 is a tightening cap nut having a spiral thread groove with a constant pitch on the inner surface.

  The fourth plug outer conductor 21 is a ring-shaped conductor member having one end side that protrudes radially inward and the other end side that protrudes radially outward.

  The fourth plug outer conductor 21 is arranged so that the cylindrical axis of the first plug outer conductor 16 and the cylinder axis of the fourth plug outer conductor 21 coincide with each other from the side having a larger diameter. Inserted from one end of the plug outer conductor 16, stays at the step on the inner surface of the first plug outer conductor 16, and has a large diameter ridge in contact with the end surface of the first insulator 22.

  The end portion 21t made of a small diameter ridge of the fourth plug outer conductor 21 is located at a position facing the pressing surface 20u of the clamp 20 in FIG. 3 and is the end portion of the coaxial outer conductor 29a held by the clamp 20. It is a site | part which contacts 29f (refer FIG. 8).

  The first plug center conductor 23 is formed of a cylindrical member having a diameter smaller than that of the first plug outer conductor 16, and includes a coaxial center conductor 29b (see a side sectional view of FIG. 7) and a second plug. It is a conductor member connected to the center conductor 24, and is inserted through the first insulator 22 and fixed inside the first plug outer conductor 16.

  The second plug center conductor 24 is formed of a cylinder having substantially the same diameter as the thick portion of the first plug center conductor 23, and the second insulation is formed inside the third plug outer conductor 28. The body 25 is inserted and fixed. A first plug center conductor 23 is fitted to the second plug center conductor 24 at right angles.

  The second insulator 25 is a member that electrically insulates the first plug outer conductor 16 and the third plug outer conductor 28 from the second plug center conductor 24.

  The first insulator 22 is a member that electrically insulates the first plug outer conductor 16 and the fourth plug outer conductor 21 and the first plug center conductor 23.

  The third O-ring 27 is mounted in the second plug outer conductor 26, cushions the second plug outer conductor 26 and another connector (not shown), and allows moisture or the like to enter the connector. It is a member that prevents

  Next, an operation of attaching the high frequency coaxial cable connector 1 to the high frequency coaxial cable 29 will be described.

  As shown in FIG. 7, the high-frequency coaxial cable 29 includes a coaxial center conductor 29b made of a copper tube and a copper wire, an insulating layer that covers the periphery of the coaxial center conductor 29b, and a spiral unevenness that covers the periphery of the insulating layer. It is comprised from the coaxial outer conductor 29a which consists of a copper tube formed in the longitudinal direction with the predetermined pitch, and the coating layer 29c which covers the coaxial outer conductor 29a.

  When the high frequency coaxial cable connector 1 is attached, the coaxial center conductor 29b is exposed from the insulating layer by a length L1 from the cut end of the high frequency coaxial cable 29, and the cable covering layer 29c is exposed from the exposed root of the coaxial center conductor 29b. The coaxial outer conductor 29a is exposed by a length L2.

  Next, as shown in FIG. 8, the guide 17 is inserted in advance from the cut end of the high-frequency coaxial cable 29 processed in FIG. After the guide 17 is inserted into the high-frequency coaxial cable 29 in the order from the rotation support portion 17q to the screwing portion 17p, the clamp 20 is screwed along the spiral unevenness of the coaxial outer conductor 29a. At this time, the clamp 20 passes the cylindrical portion 20q toward the guide 17 through the high-frequency coaxial cable 29, and the end 20t of the clamp 20 and the end 29f of the coaxial outer conductor 29a from where the clamp 20 and the coaxial outer conductor 29a collide with each other. The clamp 20 is screwed into the coaxial outer conductor 29a until substantially coincides with each other. At this time, as can be seen from the figure, the cylindrical space of the cylindrical portion 20p is in a state in which about 1 to 2 minutes of protrusions and depressions of the coaxial outer conductor 29a occupy from the end portion 29f of the coaxial outer conductor 29a.

  When the clamp 20 is screwed to a predetermined position of the high-frequency coaxial cable 29, the guide 20 is returned from the position where the guide 17 is fastened to the cut end of the high-frequency coaxial cable 29, and the cylindrical portion 20 q is inserted into the inner surface of the guide 17. The end 17t is moved until it hits the pressure receiving surface 20r.

  As a result, the high-frequency coaxial cable 29 is mounted with the clamp 20 and the guide 17 as shown in FIG. 9, and the end portion 17t is in contact with (contacted with) the pressure receiving surface 20r.

  Next, the end 29f of the coaxial outer conductor 29a shown in FIG. 8 is inserted from the end of the connector main body 2 shown in FIG. 6 where the thread groove 16a is located, and the connector main body 2 is moved while the clamp 20 is housed in the connector main body 2. Slide toward guide 17. The connector body 2 is pushed toward the guide 17 until the thread groove 16a (see FIG. 6) of the connector body 2 and the thread groove 17a of the guide 17 collide with each other. When the connector body 2 and the guide 17 collide with each other, the angle (direction) of the mating joint 1y is set with respect to the longitudinal axis of the high-frequency coaxial cable 29 so that the mating joint 1y faces a desired angle. adjust.

  After adjusting the angle of the connector body 2 in a desired direction, the connector body 2 is not rotated thereafter, the guide 17 is rotated, and the screw groove 17a of the guide 17 is screwed into the screw groove 16a of the connector body 2.

  The state of the high frequency coaxial cable connector 1 when attached to the high frequency coaxial cable 29 is shown in FIG.

  Next, the operation of the high frequency coaxial cable connector 1 will be described.

  FIG. 10 shows a state where the high frequency coaxial cable connector 1 is attached to the high frequency coaxial cable 29.

  When the screw groove 17a and the screw groove 16a are screwed together, the first plugging outer conductor 16 is tightened by the guide 17, and the guide 17 advances toward the connector body 2, so that the end 17t presses the pressure receiving surface 20r. To do. Since the pressure receiving surface 20r is pressed, the clamp 20 is also pressed toward the end of the high-frequency coaxial cable 29 (see FIG. 9).

  As can be seen from FIG. 10, the end 21t of the fourth plug outer conductor 21 of the plug outer conductor 2a is in contact with the end 29f of the coaxial outer conductor 29a. On the other hand, the high-frequency coaxial cable 29 is fixed to the clamp 20 by the coaxial outer conductor 29a engaging with the spiral irregularities 20a. By pressing the clamp 20, the end portion 29f of the coaxial outer conductor 29a is pressed against the end portion 21t. That is, the convex and concave portions of the coaxial outer conductor 29a occupy about 1 to 2 minutes in the cylindrical space formed in the cylindrical portion 20p, and the end portion 21t is in the same position when the clamp 20 is pressed. The end portion 21t enters the cylindrical space by the movement of the clamp 20 by the pressing of the guide 17. Thus, when the pressing surface 20u approaches the end 21t, the end 29f of the coaxial outer conductor 29a is sandwiched between the pressing surface 20u and the end 21t and deformed.

  The end portion 29f of the coaxial outer conductor 29a is sandwiched between the end portion 21t and the clamp 20, as can be seen from the enlarged portion of the figure, and the end portion 29f of the coaxial outer conductor 29a becomes tighter as the guide 17 is tightened. It is.

  By tightening the guide 17 and the connector main body 2 in this way, the end portion 29f of the coaxial outer conductor 29a is pressed almost uniformly against the fourth plug outer conductor 21, and the end portion 29f of the coaxial outer conductor 29a is The high frequency coaxial cable connector 1 is fixed to the high frequency coaxial cable 29.

  The state in which the screw groove 17a of the guide 17 is completely screwed into the screw groove 16a of the connector body 2 and the high frequency coaxial cable connector 1 is attached to the high frequency coaxial cable 29 is as shown in FIG.

  Even if a clamp 30 and a guide 31 as shown in FIG. 11 are used instead of the guide 17 and the clamp 20, the coaxial outer conductor 29a is sandwiched between the end 21t and the clamp 30, and the same effect can be obtained.

  Here, a stop ring 32 is inserted between the guide 31 and the clamp 30. For this reason, when the connector main body 2 (see FIG. 6) and the guide 31 are tightened, it can be tightened to the position of the stop ring 32, and since there is the stop ring 32, it cannot be tightened further, and excessive tightening is performed. There is an effect to prevent.

  The present invention resides in that the high frequency coaxial cable connector 1 has a three-point configuration including a guide 17 (or guide 31), a connector body 2, and a clamp 20 (or clamp 30). With this configuration, the assembly of the high frequency coaxial cable connector 1 is carried out after the guide 20 (or guide 31) and the clamp 20 (or clamp 30) are assembled in the high frequency coaxial cable 29, and then the connector main body 2 is mounted. 17 (or the guide 31) is fastened to the connector main body 2 so that the end portion 29f of the coaxial outer conductor 29a is pressed and crushed, so that the fourth plug outer conductor 21 and the coaxial outer conductor 29a of the connector main body 2 are excellent. Electrical contact can be ensured.

  Thereby, the high frequency coaxial cable connector 1 can be attached to the coaxial cable in a short time.

  Further, since the connector body 2 is not rotated during assembly, the mounting angle of the high frequency coaxial cable connector 1 can be easily set to a desired circumferential direction (angle) with respect to the high frequency coaxial cable 29.

  Further, the end portion 29f of the coaxial outer conductor 29a is pressed and crushed, so that the electrical contact with the plug outer conductor portion 2a can be obtained substantially uniformly. Thereby, the connector 1 for high frequency coaxial cables excellent in IM (Intermodulation) characteristics can be realized.

  Further, by inserting the end portion 29f of the coaxial outer conductor 29a between the end portion 21t and the pressing surface 20u, the guide 17 screwed into the plugging outer conductor portion 2a by the repulsive force of the insulating layer of the high-frequency coaxial cable 29 is provided. It becomes difficult to loosen and sufficient mechanical strength can be obtained.

  Unlike the conventional connector, the high frequency coaxial cable connector 1 does not require the coaxial outer conductor 29a of the cable to be processed into a taper shape at the time of attachment, and the high frequency coaxial cable 29 is connected only by peeling off the covering layer 29c at the cable end. Can do. For this reason, in the connector 1 for high frequency coaxial cables, a special tool for taper processing becomes unnecessary, and the process at the time of attachment can be simplified.

  The present invention can be applied not only to a connector for a high-frequency coaxial cable, but also to various member structures that are screwed and fixed along a spiral unevenness having a similar structure, and the member is fixed in a desired direction. be able to.

It is a sectional side view which shows the connector for high frequency coaxial cables and a high frequency coaxial cable which are this Embodiment. It is a front view of the connector for high frequency coaxial cables which shows this Embodiment. It is a sectional side view which shows the structure of a clamp. It is a front view of a clamp. It is a sectional side view which shows the structure of a guide. It is a sectional side view which shows the structure of a connector main body. It is a processing drawing of the high frequency coaxial cable used for this Embodiment. It is a sectional side view which shows the assembly | attachment of the guide and clamp to a high frequency coaxial cable. It is a sectional side view which shows the state which inserted the guide into the clamp. It is explanatory drawing which shows the state in which the connector for high frequency coaxial cables was attached to the high frequency coaxial cable. It is a sectional side view which shows the state which inserted the guide into the clamp which is other embodiment. It is a sectional side view which shows the state in which the conventional connector for coaxial cables was attached to the coaxial cable.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Connector for high frequency coaxial cables 1y Opposite joint part 1z Cable joint part 2 Connector main body 2a Plug external conductor part 16 1st plug external conductor 16a Screw groove 17 Guide 17a Screw groove 17p Screw part 17q Rotation support part 17t End part 18 1st O-ring 19 2nd O-ring 20 Clamp 20a Spiral unevenness 20p Cylindrical part 20q Cylindrical part 20r Pressure receiving surface (step surface)
20t End 20u Press surface (step surface)
21 4th plug outer conductor 21t end 22 1st insulator 23 1st plug center conductor 24 2nd plug center conductor 25 2nd insulator 26 2nd plug outer conductor (clamping bag) nut)
27 Third O-ring 28 Third plug outer conductor 29 High-frequency coaxial cable 29a Coaxial outer conductor 29b Coaxial center conductor 29c Covering layer 29f End 30 Clamp 31 Guide 32 Stop ring

Claims (3)

  A connector for a high-frequency coaxial cable, which is attached to a high-frequency coaxial cable having a coaxial outer conductor on which spiral irregularities are formed and has a plug outer conductor that conducts to the coaxial outer conductor, and an end of the coaxial outer conductor A clamp that is screwed along the concave and convex portions and accommodated in the plug external conductor portion, and a guide that presses the clamp toward the plug external conductor portion by being screwed into the plug external conductor portion. And the end of the coaxial outer conductor is sandwiched between the plug outer conductor and the clamp when the guide is fastened to the plug outer conductor by screwing. connector.   The high frequency coaxial cable connector according to claim 1, wherein the clamp is formed of a conductor member. The high frequency coaxial cable connector according to claim 1, wherein the plug external conductor is formed in a bowl shape.

Images