JP2985943B2 - Coaxial cable caulking ring - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable swaging ring used when a coaxial connector such as an F-type coaxial connector is closely fixed to a coaxial cable.

[0002]

2. Description of the Related Art An F-type coaxial plug comprises a main body comprising a retaining flange, a fixing screw rotatably mounted on the opposite side thereof, and a caulking ring. Conventionally, to connect a coaxial cable to such an F-type coaxial plug,
Insert the retaining flange of the F-type coaxial connector between the outer circumference of the insulating portion located between the core wire and the knitted wire of the coaxial cable and the knitted wire, and then insert the outer circumference of the coaxial cable in advance. The coaxial cable was press-fitted and fixed to the F-type coaxial plug by placing the caulking ring in front of the retaining flange and caulking with pliers or the like. As this caulking ring,
In general, an aluminum ring is used, but in addition, a bellows-shaped one having a plurality of annular valleys (Japanese Utility Model Application Laid-Open No. 62-116475) is generally formed in an annular shape. A caulking ring (JP-A-5-211079) is provided in which projections protruding outward and inward are provided in a part, and projections on the outer periphery are brought close to each other by pliers or the like so that a ring portion between the projections is bent. Are known.

[0003]

However, when the caulking ring has an annular shape, the grip surface of the pliers is slippery when swaging with pliers because there is no knob seat, so that it is difficult to lock. For this reason, there are disadvantages that a special tool is required and workability is poor. In addition, the bellows-shaped one requires a considerable force for caulking since a resistance force is generated against the acting force from the outside in the radial direction, and it is unsuitable for caulking in the first place. Further, as shown in FIG. 10, a crimping ring 90 having a crimping bent portion projecting outward or a crimping ring 90 having a protrusion can use a general-purpose tool such as a plier 100, and can improve workability. However, as shown in FIG. 10, since the swaged portion of the caulking ring 90 is added, slipperiness during work has not been solved.

[0004] Further, since the diameter of the bent portion is premised on the premise that the diameter is reduced by the caulking operation, the diameter of the caulked ring is determined in advance to be larger than the diameter of the coaxial cable. For this reason, as shown in FIG. 11, the cable 9 moves in the caulking ring 90 in an unstable manner during the caulking operation, thereby deteriorating the working efficiency, or as shown in FIG. However, there is a possibility that an uncompressed portion may remain after swaging, and it is difficult to uniformly attach the entire swaging ring 90 to the coaxial cable 9. Also, in order for the entire caulking ring 90 to be attached to the coaxial cable 9, it is necessary to strongly caulk the bent parts and bring them closer to each other. At this time, if the material is made of aluminum having low strength, the bent parts are There was a disadvantage that it was easily broken.

[0005] As described above, the conventional caulking ring is difficult to perform good caulking, cannot perform uniform caulking due to the difference in the position of the pliers and the caulking pressure, and has a plurality of coaxial cables having different diameters. There is a problem that it cannot be used in common to all of them.

Accordingly, an object of the present invention is to provide a coaxial cable caulking ring capable of performing caulking work easily and performing good caulking.

[0007]

To achieve the above object, a coaxial cable caulking ring according to the present invention comprises a semi-cylindrical portion and an M-shaped portion, and a crack is formed inside each bent portion of the M-shaped portion. The caulking portion, which is a side of the M-shaped portion, is provided with a cavity serving as a caulking bending guide.

In the coaxial cable caulking ring of the present invention, the caulked portion is formed substantially parallel to the left and right, but when used together with cables having different diameters, it is preferable that the M-shaped portion is tapered. . Further, a thick portion serving as a knob seat may be formed on the side surface of the M-shaped portion.

According to the caulking ring of the coaxial cable of the present invention, the caulking ring is easily crimped from the outside of the M-shaped portion, and the portion protruding inside the M-shaped portion during caulking is formed on the coaxial cable. By touching, it becomes a fulcrum, and it can be securely caulked with less force using the principle of leverage. Also, when the protrusion presses the cable during crimping,
The caulking portion can be caulked so that the entire ring is attached to the coaxial cable when the caulking portion is bent by generating a tensile force outward in a direction opposite to the protruding portion. Further, since the protrusion of the M-shaped portion moves appropriately in accordance with the cable even if the diameter of the cable is different, the swaging range can be widened, and the coaxial swaging ring of one type can coaxially use 3C-2V and 4C-2V. It can be commonly used for cables or coaxial cables having different diameters such as 4C-2V and 5C-2V coaxial cables.

The recess of the caulking portion serves as a guide for caulking and deforming the ring, and the caulking can be easily performed so that the entire ring is attached to the coaxial cable. Further, by providing a bark for preventing cracking in the bent portion of the M-shaped portion, even a weak material such as aluminum can be prevented from cracking during work. Furthermore, by forming a thick portion serving as a knob seat on the side surface of the M-shaped portion, when the knob seat is added and swaged with pliers or the like, it is possible to prevent the coaxial cable swaging ring from being cut off by the pliers. it can. In addition, even if the blade portion such as a nipper or pliers is brought into contact with the knob seat and swaged, there is no risk of cutting when the knob seat is made thick, and swaging work can be performed with various tools. be able to.

[0011]

1 and 2 show a first embodiment of a coaxial cable caulking ring according to the present invention. FIG. 1 is a perspective view of a coaxial cable swaging ring, and FIG.
FIG. 2 is a front view, a top view, and a side view of a coaxial cable swaging ring. A first example of the coaxial cable swaging ring of the present invention is, as shown in FIGS. 1 and 2, a semi-cylindrical portion 2 through which a coaxial cable is inserted, and an M-shaped shape which is connected to the semi-cylindrical portion 2 to perform a swaging operation. The caulking portion 8, which is a side portion of the M-shaped portion 3, is configured to be substantially parallel. A semicircular recess is provided as a crack preventing meat barb 4 inside each bending portion of the M-shaped portion 3 so as to prevent cracking at the time of caulking and facilitate caulking.

Also, a caulking bending guide 7 is provided as a semicircular recess outside the caulking portion of the M-shaped portion 3 which is located substantially at the outer periphery of the coaxial cable when the coaxial cable is inserted through the semi-cylindrical portion 2. ing. The guide 7 allows the M-shaped portion 3 to be easily bent from the guide 7 by the caulking operation, so that the entire ring can be attached along the outer periphery of the coaxial cable. The angle α of the M-shaped part 3 is about 90 degrees, and the length of each side from the caulking bending guide 7 to the crack preventing meat barb 4 is such that the side that bends inwardly takes into account the amount of this bend. It is provided longer than the side. The preferred range of the angle α is 80 to 120 degrees. Further, the thickness of the bent portion having the semicircular depression of the M-shaped portion 3 is about 約 of the thickness of the straight portion, so that four sides of the M-shaped portion 3 after caulking are formed. The order will overlap.

A knob seat 6 having a bellows-like uneven portion is provided near the upper outer periphery of the M-shaped portion 3 so as to be easily picked by a tool such as pliers. This is for preventing slippage, but can be easily formed because the ring shape is M-shaped.

Next, FIG. 3 shows a second embodiment of the coaxial cable caulking ring according to the present invention. The coaxial cable caulking ring of the second example shown in this figure has a configuration in which the M-shaped portion 3 is tapered as compared with FIGS.
In this way, the protrusion 15
The cable can be closer to the coaxial cable 9 and can be easily pulled up by caulking. Even if the cable has a small diameter, the distance to the cable is shorter than that of the cable having the M-shaped portion 3 parallel to the cable. Can be handled. Further, it is preferable that the M-shaped portion 3 is provided such that a line connecting the crimping guide 17, the crack preventing fluff 14 at the distal end portion, and the crack preventing fluff 14 at the protruding portion is substantially an equilateral triangle. As a result, the four sides of the M-shaped portion 3 after caulking can be neatly overlapped.

Next, FIG. 4 shows a flow of the caulking operation using the coaxial cable caulking ring shown in the second example of the coaxial cable of the present invention, and the coaxial connector 10 is attached to the coaxial cable 9 by the coaxial cable caulking ring 1. FIG. 5 is a diagram for explaining the assembling in this case. First, as shown in FIG. 5, the coaxial cable caulking ring 1 is inserted in advance into a coaxial cable 9 processed so that a predetermined length of a core wire and a predetermined length of an insulating portion are exposed. Next, a protruding portion having a flange formed at the distal end of the coaxial connector 10 and projecting rearward is inserted between the shield wire of the coaxial cable 9 and the insulating portion. Thereafter, the coaxial cable caulking ring 1 is positioned closer to the distal end than the flange, and the coaxial cable caulking ring 1 is caulked.

Next, the caulking operation will be described. When the coaxial cable 9 is inserted through the coaxial cable caulking ring 1 as shown in FIG.
And the coaxial cable 9 is provided with a small margin. Next, when the knob seat 16 is sandwiched by a caulking tool such as pliers, FIG.
As shown in (b), the M-shaped part is pressed and bent inward,
The projection 15 comes into pressure contact with the coaxial cable 9, and the other end of the coaxial cable 9 also comes into pressure contact with the inscribed surface of the semi-cylindrical portion 12. When the gap between the ring and the coaxial cable 9 is eliminated, the compressive force for pressing the inscribed surface of the semi-cylindrical portion 12 also increases.

As a result, the projecting portion 15 serves as a fulcrum, and a force for pulling the caulked portion outward is generated by pressing the cable as shown in the figure. Therefore,
When the M-shaped portions are bent with the bending guide 17 as a base point, the M-shaped portions overlap each other as shown in FIG. Is caulked by a constant pressure in the ring. FIG. 6 shows a perspective view when the coaxial connector 10 is attached to the coaxial cable 9 by performing such a caulking operation. At this time, the coaxial cable caulking ring 1 is engaged with the flange portion of the protruding portion protruding from the coaxial connector 10 via the jacket of the coaxial cable 9, so that the coaxial connector 10 is separated from the coaxial cable 9. It is possible to prevent slipping out.

Further, since the bark 14 for preventing cracks is provided, cracking during work can be prevented even when a weak material such as aluminum is used. When caulked, a crack preventing diameter is formed by the crack preventing fluff 14 provided inside the bending portion of the M-shaped portion.

In the first and second examples of the coaxial cable swaging ring 1 described above, when swaging using the pliers 101 as shown in FIG.
The edge of the tip of 1 may bite into the outer periphery of the coaxial cable caulking ring, and may possibly cut off the coaxial cable caulking ring 1 during the caulking operation. Therefore, in the third example of the coaxial cable swaging ring of the present invention, FIG.
As shown in (a) to (d), a thick knob seat is formed in a part of the M-shaped portion to prevent erosion.

Next, the configuration of a third example of the coaxial cable swaging ring of the present invention will be described in detail with reference to FIGS. 9 (a) to 9 (d). 9 (a) is a front view, FIG. 9 (b) is a top view, FIG. 9 (c) is a bottom view, and FIG. 9 (d) is a side view. The caulking portion, which is the side surface portion of the M-shaped portion 23, is configured to be tapered. In addition, the inside of each bent portion of the M-shaped portion 23 is provided with a crack preventing
A semi-circular recess is provided to prevent cracking at the time of caulking and to make caulking easier. Further, when the caulking operation is performed by inserting a coaxial cable through the semi-cylindrical portion 22, a thick portion 27 having a large thickness is formed in a portion of the M-shaped portion 23 which is caulked with pliers or the like. By providing the thick portion 27, the caulking operation can be performed with pliers or the like without digging the coaxial cable caulking ring 21. Further, a knob seat 26 having a bellows-like uneven portion is formed on the outer surface of the thick portion 27 so as to be easily picked with a tool such as pliers.

Next, a mode of the caulking operation in the third example of the coaxial cable caulking ring of the present invention is shown in FIG.
(B). First, as shown in FIG. 8A, the coaxial cable 9 having a coaxial plug attached to the tip is inserted into the coaxial cable caulking ring 21 to form the grip 26 of the coaxial cable caulking ring 21 in the holding portion of the pliers 101. The thick portion 27 is brought into contact. Next, the thick portion 27 is swaged by the pliers 101 as shown in FIG. At this time, due to the action of the thick portion 27, the edge of the tip of the pliers 101 does not bite into the outer periphery of the coaxial cable swaging ring 21. Therefore, it is possible to prevent the coaxial cable caulking ring 21 from being bitten by the pliers during the caulking operation. Further, even if the blade portion such as a nipper or pliers is brought into contact with the knob seat 26 and swaged, the knob seat is made thick, so that there is no danger of cutting.
A swaging operation can be performed by various tools. The operation that can be achieved by the first example and the second example described above can also be achieved in the third example.

The first to third examples of the coaxial cable caulking ring of the present invention described above have the above-mentioned shapes, and are formed by extruding an ingot of aluminum or brass. A long coaxial cable caulking ring can be formed, and it can be easily manufactured by cutting it into a predetermined length.

[0023]

Since the coaxial cable swaging ring of the present invention is constructed as described above, the principle of leverage can be used for swaging the lever with the M-shaped portion, thereby improving workability with less force. Can be caulked. Also,
After caulking, the entire ring can be evenly attached to the coaxial cable, and the fulcrum projection can be moved according to the diameter of the cable, so it can be used for multiple coaxial cables with different diameters. Can be used.
Further, the knob seat can be easily provided by adopting the M-shaped shape, and it is possible to prevent slippage during the caulking operation.

Furthermore, even after once caulking, if a flathead screwdriver is inserted between the coaxial cable and the protruding portion, the caulked M-shaped portion can be easily loosened, and repeated caulking by caulking again. Rings can also be used. Furthermore, by forming a thick portion serving as a knob seat on the side surface of the M-shaped portion, when the knob seat is added and swaged with pliers or the like, it is possible to prevent the coaxial cable swaging ring from being cut off by the pliers. it can. Furthermore, even if the blade part such as a nipper or pliers is brought into contact with the knob seat and swaged, if the knob seat is made thicker, there is no risk of cutting, and it is possible to work with various tools. can do.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first example of a coaxial cable caulking ring according to an embodiment of the present invention.

FIGS. 2A and 2B are diagrams showing a first example of an embodiment of a coaxial cable caulking ring according to the present invention, wherein FIG. 2A is a front view thereof, and FIG.
Is a top view, and (c) is a side view.

3A and 3B are diagrams showing a second example of the embodiment of the coaxial cable caulking ring according to the present invention, wherein FIG. 3A is a front view thereof, and FIG.
Is a top view, and (c) is a side view.

FIG. 4 is a diagram showing a flow of a caulking operation using the coaxial cable caulking ring shown in the second example.

FIG. 5 is an exploded view of the coaxial cable swaging ring of the present invention.

FIG. 6 is a perspective view showing a state after swaging.

FIG. 7 is a diagram for explaining problems of the first example and the second example of the embodiment of the coaxial cable caulking ring of the present invention.

FIG. 8 is a diagram illustrating a mode of a caulking operation in a third example of the embodiment of the coaxial cable caulking ring of the present invention.

9A and 9B are views showing a third example of the embodiment of the coaxial cable caulking ring according to the present invention, wherein FIG. 9A is a front view thereof, and FIG.
Is a top view, and (c) is a side view.

FIG. 10 is a view for explaining a caulking operation in a conventional coaxial cable caulking ring.

FIG. 11 is a diagram illustrating a problem of a conventional coaxial cable caulking ring.

FIG. 12 is a view for explaining another problem of the conventional coaxial cable caulking ring.

[Explanation of symbols]

 1,11,21 Coaxial cable caulking ring 2,12,22 Semi-cylindrical part 3,13,23 M-shaped part 4,14,24 Flesh for crack prevention 5,15,25 Projection part 6,16,26 Knob Seat 7, 17 Caulking bending guide 8, 18 Caulking portion 9 Coaxial cable 10 Coaxial plug 27 Thick portion

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01R 17/04 H01R 4/18

Claims (5)

(57) [Claims] 1. A coaxial cable caulking ring used for tightly fixing a coaxial plug to a coaxial cable, comprising a semi-cylindrical portion and an M-shaped portion connected to the semi-cylindrical portion. Cable swaging ring. 2. A coaxial cable caulking ring for use in tightly fixing a coaxial plug to a coaxial cable, comprising a semi-cylindrical portion and an M-shaped portion connected to the semi-cylindrical portion, and a side surface of the M-shaped portion. A coaxial cable caulking ring having a recess serving as a caulking bending guide. 3. The caulking ring according to claim 1, wherein a semicircular recess for preventing cracking is provided inside each bending portion of the M-shaped portion. 4. The caulking ring according to claim 1, wherein said M-shaped portion is tapered. 5. A coaxial cable caulking ring used for tightly fixing a coaxial plug to a coaxial cable, comprising a semi-cylindrical portion and an M-shaped portion connected to the semi-cylindrical portion, wherein a side surface of the M-shaped portion is provided. A coaxial cable caulking ring, characterized in that a thick portion serving as a knob seat is formed.