JP2017004908A - Connector pulling-out method and connector pulling-out tool used therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily and simply pull a cap nut out of an end of a coaxial cable without damaging a female screw part of the cap nut.SOLUTION: A male screw part 22 of a connector pulling-out tool 20 is screwed in a female screw part 10 of a cap nut 2, and the screwing is carried on even after the male screw part 22 abuts on an end of a center conductor 3 of a coaxial cable 1 so as to press in the center conductor 3 in a screwing-in direction. The cap nut 2 is put closer relatively to the connector pulling-out tool 20 by pressing in the center conductor 3 in the screwing-in direction, and thereby an end 5a of an external conductor 5 is folded in more to a radial side than an annular projection 7 of the cap nut 2 by the annular projection 7. The screwing is carried on even after the folding to pull the cap nut 2 out of the end of the coaxial cable 1.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a connector pulling method for pulling out a connector attached to an end of a coaxial cable used in information equipment, communication equipment, and the like, and a connector pulling jig used for the same.

  Referring to FIG. 13, reference numeral 1 denotes a coaxial cable, and reference numeral 2 denotes a cap nut as a female connector attached to an end of the coaxial cable 1.

  The coaxial cable 1 includes a center conductor 3 formed of a tubular conduit, an insulator 4 formed on the outer periphery of the center conductor 3, an outer conductor 5 formed on the outer periphery of the insulator 4, and an outer periphery of the outer conductor 5. And an insulating skin 6 coated on the surface.

  The coaxial cable 1 is fitted with a cap nut 2 as a female connector on the outer periphery of its end. The cap nut 2 has an annular projection 7 projecting radially inward in the middle of the inner peripheral surface in the axial direction. An annular recess 9 for mounting the seal ring 8 is formed on the inner peripheral surface in the axial direction from the annular protrusion 7 of the cap nut 2. A female thread portion 10 is formed on the inner peripheral surface of the cap nut 2 on the upper side of the annular protrusion 7.

  The lower end surface 7 a of the annular protrusion 7 of the cap nut 2 serves as a receiving seat for the upper end surface of the insulating outer skin 6. The upper surface 7b of the annular protrusion 7 of the cap nut 2 is a tapered surface inclined radially inward in the axial direction and serves as a connection surface with the male connector 40 inserted into the cap nut 2. .

  A method for attaching the cap nut 2 to the end of the coaxial cable 1 will be described.

  The insulating sheath 6, the outer conductor 5, and the insulator 4 are removed from the end of the coaxial cable 1 by a predetermined length, and the center conductor 3 and the outer conductor 5 are exposed at the end of the coaxial cable 1.

  Next, the cap nut 2 is fitted on the outer periphery of the end of the coaxial cable 1 with the axial lower end of the cap nut 2 in a state where the seal ring (O-ring) 8 is inserted into the annular recess 9. The lower end surface 7 a of the second annular protrusion 7 is brought into contact with the upper end surface of the insulating sheath 6 of the coaxial cable 1.

  Next, the end 5 a of the outer conductor 5 protruding axially upward from the upper end surface of the insulating outer skin 6 is bent so as to be annularly pushed outward in the radial direction, and is engaged with the upper surface 7 b of the annular protrusion 7.

  Next, the male connector 40 is inserted into the cap nut 2.

  In this case, the male connector 40 has a central connector portion (not shown) connected to the central conductor 3 and an outer peripheral connector portion 41 connected to the external conductor 5. The outer peripheral side connector portion 41 has an outer peripheral surface threaded to form a male thread portion, and a lower end surface corner portion 42 becomes a tapered surface corresponding to the taper shape of the upper surface 7 b of the annular protrusion 7 of the cap nut 2. Yes.

  When the outer peripheral side connector portion 41 of the male connector 40 is screwed into the female threaded portion 10 of the cap nut 2, the lower end surface corner portion 42 of the outer peripheral side connector portion 41 of the male connector 40 and the upper surface of the annular protrusion 7 of the cap nut 2. 7b, the end 5a of the outer conductor 5 is sandwiched between the outer connector 5 and the outer connector portion 41 of the male connector 40. On the other hand, the center connector portion of the male connector 40 is connected to the center conductor 3 of the coaxial cable 1 although not shown.

  When the male connector 40 is removed from the cap nut 2 and then the cap nut 2 as the female connector is pulled out from the end portion of the coaxial cable 1, the end portion 5 a of the outer conductor 5 of the coaxial cable 1 has an annular protrusion 7. Therefore, it is difficult for the operator to pull out the cap nut 2 by causing the end 5a of the outer conductor 5 with fingers.

  Therefore, conventionally, the end 5a of the outer conductor 5 of the coaxial cable 1 is folded inward in the radial direction with a flathead screwdriver or the like, and then the cap nut 2 is pulled out from the end of the coaxial cable 1. I am doing so.

  In addition, the following patent document can be mentioned as a connector with which the edge part of the conventional coaxial cable is mounted | worn.

JP 2013-161747 A

  However, since the upper surface 7b of the annular protrusion 7 of the cap nut 2 is engaged with the end 5a of the outer conductor 5 covering the entire circumference, it is coaxial with the upper surface 7b of the annular protrusion 7 by a minus driver. Even if the end portion 5a of the outer conductor 5 of the cable 1 is caused to be radially inward, the causing work is not easy, and it takes a considerable amount of time. Furthermore, the female screw portion 10 of the cap nut 2 is easily damaged at the tip of the flathead screwdriver.

  The present invention has been made in view of the above-mentioned problems, and a connector pulling method that can easily and easily pull a cap nut from an end portion of a coaxial cable without damaging the female screw portion of the cap nut, and using the same. An object of the present invention is to provide a connector pulling jig.

  In order to solve the above problems, the present invention provides the following means.

The connector pulling-out method according to the present invention includes an internal thread portion on one end side of the inner peripheral surface, an annular projection projecting radially inward from the female thread portion to the other end side, and an inner peripheral surface portion on the other end side from the annular projection. In the cap nut as a female connector provided, and a coaxial cable in which each end of the outer conductor and the center conductor is exposed to the outside,
In the state where the end portion of the outer conductor of the coaxial cable is radially extended outwardly and engaged with the upper surface of the annular protrusion of the cap nut, the inner peripheral surface portion of the other end side of the cap nut is connected to the coaxial cable. A connector pulling method for pulling out the cap nut that is externally fitted to the outer peripheral surface of the end from the end of the coaxial cable,
A first step of preparing a connector pulling jig having a jig main body and a male screw portion provided on the outer surface of the jig main body and capable of being screwed to the female screw portion of the cap nut;
A second step of screwing the male screw portion of the connector pulling jig into the female screw portion of the cap nut;
Even after the lower end surface of the male screw portion of the connector pulling jig abuts on the upper end surface of the center conductor of the coaxial cable by the screwing, the screwing is continued and the center conductor is pushed in the screwing direction. And the process of
In the process of bringing the cap nut relatively close to the connector pulling jig by pushing the central conductor in the screwing direction, the end of the outer conductor is more radiused than the annular protrusion by the annular protrusion. A fourth step of folding inwardly,
And a fifth step of pulling out the cap nut from the end of the coaxial cable by continuing the screwing after the folding.

  In the first step, preparation of the connector pulling jig is preparation for arranging the connector pulling jig at a position where the cap nut is pulled out from the end of the coaxial cable.

  In addition, the upper surface of the annular protrusion of the cap nut is not limited to the tapered surface, and includes a flat surface and other surface shapes.

  The central conductor may be a solid conductor or a conductor having a hollow portion.

  Preferably, the center conductor has a hollow portion in the axial direction, and the connector pulling jig has a protrusion that can be inserted in the hollow portion of the center conductor in the axial direction on the lower surface of the male screw portion, When the central conductor is pushed in the screwing direction by the connector pulling jig in the second to fourth steps, the projection of the connector pulling jig is inserted into the hollow portion to maintain the axial posture. So that it is pushed in.

  Preferably, the connector pulling jig has a protruding portion having a hollow portion into which the center conductor can be inserted on the lower surface of the male screw portion, and the center conductor is the connector in the second to fourth steps. When the connector is pushed in the screwing direction by the pulling jig, it is inserted into the hollow portion of the protruding portion of the connector pulling jig so that the axial posture is maintained.

  According to the present invention, the cap nut can be easily and easily pulled out from the end portion of the coaxial cable without damaging the female screw portion of the cap nut.

The perspective view of the connector extraction jig | tool which concerns on embodiment of this invention. The perspective view of an operation jig. The perspective view which attached the operation jig to the connector extraction jig | tool. It is each sectional drawing which shows arrangement | positioning of the coaxial cable with which it uses for description of the connector extraction method using the connector extraction jig | tool of FIG. 1, a cap nut, and a connector extraction jig | tool. It is sectional drawing which shows the state which inserted the connector extraction jig | tool into the cap nut from the state of FIG. It is sectional drawing which shows the state which inserted the connector extraction jig | tool further into the cap nut from the state of FIG. It is sectional drawing which shows the state which inserted the connector extraction jig | tool into the cap nut further from the state of FIG. It is sectional drawing of the coaxial cable from which the connector extraction jig | tool was further inserted in the cap nut from the state of FIG. 7, and the cap nut was extracted. Sectional drawing before using it for description of the connector extraction method which concerns on other embodiment, and extracting a cap nut from a coaxial cable. FIG. 10 is a cross-sectional view corresponding to FIG. 9 in the process of pulling out the cap nut. Sectional drawing before extracting a cap nut from a coaxial cable in the description of the connector extraction method which concerns on other embodiment. FIG. 12 is a sectional view corresponding to FIG. 11 and illustrating a process of pulling out the cap nut. Sectional drawing with which it uses for description of the conventional connector extraction method.

  Hereinafter, a connector pulling method according to an embodiment of the present invention and a connector pulling jig used for the same will be described with reference to the accompanying drawings.

  First, with reference to FIG. 1, the connector extraction jig used for this connector extraction method is demonstrated.

  In FIG. 1, reference numeral 20 denotes a connector pulling jig. The connector pulling jig 20 includes a jig main body 21 and a male screw portion 22 on the lower surface of the jig main body 21. The jig main body 21 includes an upper portion 21a having a rectangular shape in plan view and a lower portion 21b having a circular shape in plan view.

  In FIG. 2, reference numeral 30 denotes an operation jig used when the male screw portion 22 of the connector pulling jig 20 is screwed into the female screw portion 10 of the cap nut 2.

  The operation jig 30 has a mounting hole 31 having a rectangular shape in plan view in the center and a pair of operation levers 32 extending to the left and right of the mounting hole 31.

  As shown in FIG. 3, when the upper portion 21a of the connector pulling jig 20 is inserted into the mounting hole 31 of the rotating jig 30, and the operation levers 32 on both sides of the operating jig 30 are rotated in the direction of the arrow, the connector pulling jig The male screw portion 22 of the connector pulling jig 20 can be screwed into the female screw portion 10 of the cap nut 2 by rotating 20 with a small force.

  The lower part 21b of the connector pulling jig 20 is circular in plan view. Even if the operating jig 30 is inserted into the upper part 21a of the connector pulling jig 20, the operating jig 30 is below the connector pulling jig 20 below. This is to prevent it from falling out. The shape of the operation jig 30 is not limited to the above, and is not particularly limited as long as it can be rotated. For example, a tool such as a spanner or a monkey wrench may be used.

  A connector extraction method using the connector extraction jig 20 will be described with reference to FIG. Since the coaxial cable 1 and the cap nut 2 shown in FIG. 4 and subsequent figures have been described with reference to FIG. 13, in order to avoid duplication of explanation, the corresponding parts are denoted by the same reference numerals and the details thereof are omitted.

  First, as shown in FIG. 4, as a preparation for pulling out the cap nut 2, the connector pulling jig 20 is disposed above the cap nut 2 that is externally fitted to the end of the coaxial cable 1.

  In FIG. 4, the cap nut 2 is a female connector, and has an internal thread portion 10 on one end side in the axial direction on the inner peripheral surface thereof, and an annular shape projecting radially inward from the female screw portion 10 to the other end side in the axial direction. A protrusion 7 and an inner peripheral surface portion 12 on the other end side in the axial direction from the annular protrusion 7 are formed.

  In the coaxial cable 1, the end portions of the outer conductor 5 and the center conductor 3 are exposed to the outside. The end 5a of the outer conductor 5 is engaged with the upper surface 7b of the annular protrusion 7 of the cap nut 2 by being pushed outward in the radial direction. The inner peripheral surface portion 12 of the cap nut 2 is externally fitted to the end outer peripheral surface portion 13 of the coaxial cable 1. An upper end surface 3 a of the central conductor 3 of the coaxial cable 1 protrudes axially above the annular protrusion 7 of the cap nut 2.

  Next, as shown in FIG. 5, the male screw portion 22 of the connector pulling jig 20 is screwed into the female screw portion 10 of the cap nut 2, and the connector pulling jig 20 is moved in the direction of arrow A to the female screw portion 10 of the cap nut 2. Screw in.

  Next, with this screwing, as shown in FIG. 6, the lower end surface 23 of the male screw portion 22 of the connector pulling jig 20 comes into contact with the upper end surface 3 a of the central conductor 3 of the coaxial cable 1.

  After the contact, the connector pulling jig 20 is screwed in the direction of arrow B. Then, the cap nut 2 relatively approaches the positions P1, P2, and P3 indicated by phantom lines with respect to the connector pulling jig 20 in the direction of the arrow C.

  With this approach, the annular protrusion 7 of the cap nut 2 moves upward in the axial direction to the positions P4, P5, and P6 indicated by the phantom lines, as shown in FIG. To do.

  As a result, the end portion 5a of the outer conductor 5 that has been pushed and engaged with the upper surface 7b of the annular protrusion 7 is pushed upward in the axial direction by the annular protrusion 7, and the virtual lines 5a 'and 5a' ' As shown, it is raised inward in the radial direction, which is the direction of arrow E. In a state where the end portion 5 a of the outer conductor 5 is folded at the position of the virtual line 5 a ″, the end portion 5 a of the outer conductor 5 is located on the radially inner side with respect to the annular protrusion 7. This state is shown in FIG.

  Then, when the screwing of the connector pulling jig 20 into the cap nut 2 is further continued from the state of FIG. 7, the cap nut 2 is pulled out from the coaxial cable 1 as shown in FIG. 8.

  As described above, according to this embodiment, the first step of arranging the connector pulling jig 20 above the end of the coaxial cable 1 to prepare for pulling, and the male screw portion 22 of the connector pulling jig 20 And the lower end surface 23 of the male screw portion 22 of the connector pull-out jig 20 abuts on the upper end surface 3a of the central conductor 3 of the coaxial cable 1 by this second step. Then, the screwing is continued after the contact, and the cap nut 2 is pulled out by the third step of pushing the center conductor 3 in the screwing direction and the pushing of the center conductor 3 in the screwing direction. A fourth step in which the end 5a of the outer conductor 5 is folded radially inward of the annular protrusion 7 by being brought close to the tool 20, and the screwing is continued even after the folding. The fifth step of pulling out the cap nut 2 from the end of the coaxial cable 1 is provided, so that the cap nut 2 can be easily and easily removed from the end of the coaxial cable 1 without damaging the female screw portion 10 of the cap nut 2. It can be pulled out easily.

  Referring to FIGS. 9 and 10, another embodiment of the present invention will be described. A connector pulling jig 20 has a protruding portion that can be inserted into the center hole 3 b of the center conductor 3 on the lower end surface 23 of the male screw portion 22. 24 is formed.

  Then, in the first step, the connector pulling jig 20 is disposed above the cap nut 2 that is externally fitted to the end of the coaxial cable 1, and in the second step, the male screw portion 22 of the connector pulling jig 20 is disposed. When screwed into the female threaded portion 10 of the cap nut 2 in the direction of arrow F, the protruding portion 24 of the cap nut 2 is inserted into the center hole 3 b of the center conductor 3 of the coaxial cable 1.

  Therefore, after the lower end surface 23 of the male screw portion 22 of the connector pulling jig 20 contacts the upper end surface 3a of the center conductor 3 in the second step, the center conductor 3 of the coaxial cable 1 is connected to the connector in the third step. When the center conductor 3 is pushed in by the lower end surface 23 of the male screw portion 22 of the drawing jig 20, the center conductor 3 can stably maintain its axial direction posture.

  As a result, the connector pulling jig 20 is moved closer to the connector pulling jig 20 in the fourth step so that the end 5a of the outer conductor 5 is more radially positioned than the ring protrusion 7 by the ring protrusion 7. Can be folded inward.

  Referring to FIGS. 11 and 12, another embodiment of the present invention will be described. The connector pulling jig 20 is equal to or slightly larger than the outer diameter of the center conductor 3 at the lower end surface 23 of the male screw portion 22. A protrusion 25 having a hollow portion 25a having an inner diameter is formed.

  Then, in the first step, the connector pulling jig 20 is arranged above the end of the coaxial cable 1, and in the second step, the male screw portion 22 of the connector pulling jig 20 is moved in the direction of arrow G to the cap nut 2. When screwed into the female screw portion 10, the central conductor 3 of the coaxial cable 1 is inserted into the hollow portion 25 a of the protrusion 25 of the cap nut 2.

  Therefore, even after the lower end surface 23 of the male threaded portion 22 of the connector extraction jig 20 abuts on the upper end surface 3a of the center conductor 3 in the second step, the center conductor 3 of the coaxial cable 1 is When being pushed in by the lower end surface 23 of the male threaded portion 22 of the connector pulling jig 20, the center conductor 3 can stably maintain its axial orientation.

  As a result, the connector pulling jig 20 is moved closer to the connector pulling jig 20 in the fourth step so that the end 5a of the outer conductor 5 is more radially positioned than the ring protrusion 7 by the ring protrusion 7. Can be folded inward.

  The present invention is not limited to the above embodiments, and can be implemented in various other forms without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all respects, and the scope of the present invention is shown in the claims, and is not restricted by the text of the specification. Further, all modifications and changes belonging to the scope of the claims are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Coaxial cable 2 Cap nut 3 Center conductor 3a The upper end surface of the center conductor 3 4 Insulator 5 Outer conductor 5a End part of the outer conductor 5 6 Insulation outer shell 7 The annular protrusion 7a of the cap nut 2 The lower surface 7b of the annular protrusion 7 The annular protrusion 7 Upper surface 8 Seal ring 10 Female threaded portion 12 of cap nut 2 Inner peripheral surface portion 13 of cap nut 2 Outer peripheral surface portion 20 of coaxial cable 1 Connector pulling jig 21 Jig body 22 of connector pulling jig 20 Connector pulling jig 20 Male screw part 23 Lower end surface of male screw part 22

Claims (4)

A cap nut as a female connector provided with a female thread portion on one end side of the inner peripheral surface, an annular protrusion projecting radially inward from the female thread portion to the other end side, and an inner peripheral surface portion on the other end side from the annular protrusion And a coaxial cable in which each end of the outer conductor and the center conductor is exposed to the outside,
In the state where the end portion of the outer conductor of the coaxial cable is radially extended outwardly and engaged with the upper surface of the annular protrusion of the cap nut, the inner peripheral surface portion of the other end side of the cap nut is connected to the coaxial cable. A connector pulling method for pulling out the cap nut that is externally fitted to the outer peripheral surface of the end from the end of the coaxial cable,
A first step of preparing a connector pulling jig having a jig main body and a male screw portion provided on the outer surface of the jig main body and capable of being screwed to the female screw portion of the cap nut;
A second step of screwing the male screw portion of the connector pulling jig into the female screw portion of the cap nut;
Even after the lower end surface of the male screw portion of the connector pulling jig abuts on the upper end surface of the center conductor of the coaxial cable by the screwing, the screwing is continued and the center conductor is pushed in the screwing direction. And the process of
In the process of bringing the cap nut relatively close to the connector pulling jig by pushing the central conductor in the screwing direction, the end of the outer conductor is more radiused than the annular protrusion by the annular protrusion. A fourth step of folding inwardly,
A fifth step of pulling out the cap nut from the end of the coaxial cable by continuing the screwing after the folding;
A method for pulling out a connector. The central conductor has a hollow portion in the axial direction,
The connector pulling jig has a protrusion that can be inserted into the hollow portion of the central conductor in the axial direction on the lower surface of the male screw portion,
When the center conductor is pushed in the screwing direction by the connector pulling jig in the second to fourth steps, the protrusion of the connector pulling jig is inserted into the hollow portion so that the axial orientation is 2. The method of claim 1, wherein the method is pushed in a maintained state. The connector pulling jig has a protrusion having a hollow part into which the center conductor can be inserted on the lower surface of the male screw part,
When the center conductor is pushed in the screwing direction by the connector pulling jig in the second to fourth steps, the center conductor is inserted into the hollow portion of the protrusion of the connector pulling jig and maintains the axial posture. The method according to claim 1, wherein the method is pushed in.   A connector pulling jig used in the method according to any one of claims 1 to 3, wherein the jig is provided on a lower surface of the jig main body and the jig main body, and can be screwed onto the female thread portion of the cap nut on the outer peripheral surface. A connector pulling jig comprising: a male screw portion.

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