JPH09312181A - Coaxial cable caulking ring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the caulking work, and perform the excellent caulking by forming a coaxial cable caulking ring of a semi-cylindrical part and an M-shaped part, and providing a recessed part in each side surface of the M- shaped part. SOLUTION: A coaxial cable caulking ring is formed of a semi-cylindrical part 2, in which a coaxial cable is to be inserted, and a M-shaped part 3, which is continuously provided to the semi-cylindrical part 2 and which performs caulking, and a caulking part 8 formed as a side surface of the M-shaped part is formed in nearly parallel with each other. Inside of each bending part of the M-shaped part 3 is provided with a crack preventing escape part 4 so as to prevent the generation of crack at the time of caulking and so as to facilitate the caulking. Outside of each caulking part of the M-shaped part 3 is provided with a guide 7. The M-shaped part 3 is easily bent at a part of the guide 7 by this guide 7, and the whole of the ring can be formed along the periphery of the coaxial cable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable caulking ring used for closely fixing a coaxial connector such as an F type coaxial connector to a coaxial cable.

[0002]

2. Description of the Related Art An F-type coaxial connector is composed of a retaining collar, a main body composed of a fixing screw portion rotatably mounted on the opposite side thereof, and a caulking ring. Conventionally, to connect a coaxial cable to such an F-type coaxial connector,
The retaining collar of the F-type coaxial connector is inserted between the outer circumference of the insulating portion located between the core wire of the coaxial cable and the braid and the braid, and then inserted into the outer circumference of the coaxial cable in advance. The caulking ring was positioned in front of the collar portion to prevent it from coming off, and the coaxial cable was crimped and fixed to the F-type coaxial connector by caulking it with pliers or the like. As this caulking ring,
In general, an annular ring made of aluminum is used, but in addition to this, a bellows-shaped structure having a plurality of annular valley portions (Japanese Utility Model Laid-Open No. 62-116475), an annular shape as a whole, A caulking ring (Japanese Patent Laid-Open No. 5-211079) is provided in which a protrusion protruding outwardly or inwardly is provided in a part, and the protrusions on the outer periphery are brought closer to each other by pliers or the like to bend the ring portion between the protrusions. Are known.

[0003]

However, when the caulking ring has an annular shape, the gripping surface of the pliers is slippery and difficult to lock when it is caulked with the pliers because there is no knob seat. Therefore, there are disadvantages that special tools are required and workability is poor. In addition, since the bellows-shaped member generates a resistance force against the acting force from the outside in the radial direction, a considerable force is required to perform the crimping, and it is not suitable for crimping in the first place. Further, as shown in FIG. 10, the one having the bent portion for crimping protruding outward and the crimp ring 90 provided with the protrusion can use a general-purpose tool such as the pliers 100, and the workability can be improved. However, since the bent portion of the caulking ring 90 is held as shown in FIG. 10, the fact that it is slippery during work has not been solved.

In addition, since the one having a bent portion is premised on that the diameter is reduced by the caulking work, the diameter of the caulking ring is predetermined to be larger than the diameter of the coaxial cable. Therefore, as shown in FIG. 11, during caulking work, the cable 9 moves unstablely inside the caulking ring 90 to deteriorate work efficiency, and as shown in FIG. 12, pressure is applied depending on the position where the caulking ring 90 is pinched by pliers or the like. However, there is a possibility that a part that is not compressed remains after the caulking, making it difficult to uniformly fit the entire caulking ring 90 to the coaxial cable 9. Further, in order to fit the entire caulking ring 90 to the coaxial cable 9, it is necessary to strongly caulk the bent portions to bring them closer to each other. At this time, if the material is aluminum having low strength, the bent portions are It had the drawback of being fragile.

As described above, it is difficult for the conventional crimping ring to perform good crimping, and it is impossible to perform uniform crimping work due to the difference in the position of the pliers and the crimping pressure. There was a problem that it could not be used in common.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a coaxial cable caulking ring capable of facilitating the caulking work as well as performing the caulking.

[0007]

To achieve the above object, a coaxial cable caulking ring of the present invention comprises a semi-cylindrical portion and an M-shaped portion, and the inside of each bending portion of the M-shaped portion is cracked. In addition, the caulking portion, which is the side surface of the M-shaped portion, has a recess serving as a caulking bending guide.

In the coaxial cable caulking ring of the present invention, the caulking portions are formed substantially parallel to each other, but when used in combination with cables having different diameters, it is preferable that the M-shaped portion be a concavity. . Further, a thick portion serving as a knob seat may be formed on the side surface of the M-shaped portion.

According to such a coaxial cable crimping ring of the present invention, by caulking from the outside of the M-shaped portion, it is easy to pinch, and the portion protruding inside the M-shaped portion during crimping becomes a coaxial cable. It can be used as a fulcrum when touched, and the lever principle can be used to securely crimp with less force. Also, when the protrusion presses the cable during crimping,
The crimping portion can be crimped so that the entire ring is put along the coaxial cable when a bending force is generated due to an outward pulling force in the direction opposite to the protruding portion. Furthermore, the protrusion of the M-shaped portion can be moved appropriately according to the cable even if the diameter of the cable is different, so the caulking range can be widened, and 3C-2V and 4C-2V coaxial can be used with one type of coaxial caulking ring. It can be commonly used for cables or coaxial cables having different diameters such as 4C-2V and 5C-2V coaxial cables.

Further, the hollow of the caulking portion serves as a guide for caulking and deforming the ring, and the caulking can be easily carried out so that the entire ring is put along the coaxial cable. Furthermore, by providing a crack-preventing barb in the bent portion of the M-shaped portion, it is possible to prevent even a weak material such as aluminum from cracking during work. Furthermore, by forming a thick portion serving as a knob seat on the side surface of the M-shaped portion, it is possible to prevent the coaxial cable caulking ring from being cut off by the pliers when the knob seat is added and crimped with pliers or the like. it can. Even if the blades such as nippers and pliers are brought into contact with the knob seat and caulked, if the knob seat is made thick, there is no risk of cutting, and caulking work can be performed with various tools. be able to.

[0011]

1 and 2 show a first example of an embodiment of a coaxial cable caulking ring of the present invention. 1 is a perspective view of a coaxial cable caulking ring, and FIG.
FIG. 4A is a front view, a top view, and a side view of a coaxial cable caulking ring. A first example of a coaxial cable caulking ring of the present invention is, as shown in FIGS. 1 and 2, a semi-cylindrical portion 2 into which the coaxial cable is inserted, and an M-shaped shape in which the semi-cylindrical portion 2 is connected to perform caulking work. The caulking portion 8 which is a side surface portion of the M-shaped portion 3 is configured to be substantially parallel to each other. A semi-circular recess is provided as a crack-preventing meat barb 4 on the inner side of each refracting portion of the M-shaped portion 3 to prevent cracking during crimping and to facilitate crimping.

Further, a caulking bending guide 7 is provided as a semi-circular recess on the outside of the caulking portion of the M-shaped portion 3 which is located substantially on the outer circumference of the coaxial cable when the coaxial cable is inserted into the semicylindrical portion 2. ing. With this guide 7, the M-shaped portion 3 can be easily bent from the portion of the guide 7 by caulking work, and the entire ring can be put along the outer circumference of the coaxial cable. The angle α of the M-shaped portion 3 is set to about 90 degrees, and the length of each side from the crimping bending guide 7 to the crack preventing meat barb 4 is such that the side that bends inward is a side in consideration of this bending amount. It is provided longer than the side. The preferred range of the angle α is 80 to 120 degrees. Further, the wall thickness of the bent portion having the semicircular recess of the M-shaped portion 3 is about 1/2 of the wall thickness of the straight portion, whereby the four sides of the M-shaped portion 3 after caulking are set. It will be neatly stacked.

A knob seat 6 having a bellows-shaped uneven portion is provided near the outer periphery of the upper portion of the M-shaped portion 3 so that it can be easily gripped with a tool such as pliers. This is for preventing slipping, but can be easily formed because the ring shape is M-shaped.

Next, FIG. 3 shows a second example of the embodiment of the coaxial cable caulking ring of the present invention. In the coaxial cable swaging ring of the second example shown in this figure, the M-shaped portion 3 is formed in a concave shape as compared with FIGS. 1 and 2.
By forming the tapered shape in this way, the protrusion 15
Is closer to the coaxial cable 9 and can be swung up easily by caulking. Also, even if the cable has a small diameter, the distance to the cable is smaller than that of the M-shaped portion 3 that is parallel, which makes it easier. Can correspond to. Further, it is preferable that the M-shaped portion 3 is provided so that the line connecting the caulking bending guide 17, the crack preventing meat barb 14 at the tip portion, and the crack preventing meat barb 14 at the protruding portion becomes a substantially equilateral triangle. This makes it possible to orderly stack the four sides of the M-shaped portion 3 after crimping.

Next, the flow of caulking work using the coaxial cable caulking ring shown in the second example of the coaxial cable of the present invention is shown in FIG. 4, and the coaxial connector 10 is attached to the coaxial cable 9 by the coaxial cable caulking ring 1. FIG. 5 is a view for explaining the assembly at this time. First, as shown in FIG. 5, the coaxial cable caulking ring 1 is inserted in advance into the coaxial cable 9 processed so that the core wire of a predetermined length and the insulating portion of a predetermined length are exposed. Next, the protruding portion, which has a flange formed at the tip of the coaxial connector 10 and protrudes rearward, is inserted between the shield wire of the coaxial cable 9 and the insulating portion. After that, the coaxial cable caulking ring 1 is positioned closer to the tip side than the flange portion, and caulking work of the coaxial cable caulking ring 1 is performed.

The caulking work will be described below. The coaxial cable caulking ring 1 has a projection 15 and a semi-cylindrical portion 12 when the coaxial cable 9 is inserted as shown in FIG.
A slight margin is formed between the space formed by and the coaxial cable 9. Next, when the knob seat 16 is pinched with a caulking tool such as pliers,
As shown in (b), the M-shaped portion is pressed and bent inward,
The protrusion 15 comes into pressure contact with the coaxial cable 9, and the other end of the coaxial cable 9 is also in pressure contact with the inscribed surface of the semi-cylindrical portion 12. When the gap between the ring and the coaxial cable 9 disappears, the compressive force that presses the inscribed surface of the semi-cylindrical portion 12 also increases.

As a result, the protrusion 15 serves as a fulcrum, and as shown in the figure, pressing the cable causes a force to pull the caulked portion outward. Therefore,
When the M-shaped portion is bent around the bending guide 17, the ring surrounds the outer circumference of the coaxial cable 9, and the M-shaped portions overlap each other as shown in FIG. Will be crimped in the ring by constant pressure. FIG. 6 shows a perspective view when the coaxial connector 10 is attached to the coaxial cable 9 by performing such caulking work. At this time, the coaxial cable caulking ring 1 engages with the flange portion of the projecting portion projecting from the coaxial connector 10 via the jacket of the coaxial cable 9, so that the coaxial connector 10 is removed from the coaxial cable 9. It is possible to prevent getting out.

Further, since the crack-preventing meat burr 14 is provided, it is possible to prevent cracking during work even if a weak material such as aluminum is used. When caulked, the crack-preventing diameter is formed by the crack-preventing meat bite 14 provided inside the bending portion of the M-shaped portion.

In the first and second examples of the coaxial cable caulking ring 1 described above, the pliers 10 are used when caulking with the pliers 101 as shown in FIG.
There is a risk that the edge portion of the tip of 1 will bite into the outer periphery of the coaxial cable crimping ring, and in some cases, the coaxial cable crimping ring 1 will be bitten out during the crimping operation. Therefore, in the third example of the coaxial cable caulking 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 eating habits.

Next, the configuration of the third example of the coaxial cable caulking ring of the present invention will be described in detail with reference to FIGS. 9 (a) to 9 (d). 9A is a front view, FIG. 9B is a top view, FIG. 9C is a bottom view, and FIG. 9D is a side view. The caulking portion, which is the side surface portion of the M-shaped portion 23, is configured so as to be a dent. In addition, inside the bending portion of each M-shaped portion 23, a crack-preventing meat barb 24 is formed.
As a result, a semicircular recess is provided to prevent cracking during crimping and to facilitate crimping. Further, when the caulking operation is performed by inserting the coaxial cable through the semi-cylindrical portion 22, a thick wall portion 27 having a thick wall is formed in a portion of the M-shaped portion 23 which is crimped with pliers or the like. By providing the thick portion 27, the caulking work can be performed with pliers or the like without cutting the coaxial cable caulking ring 21. Further, a knob seat 26 having a bellows-shaped uneven portion is formed on the outer surface of the thick portion 27 so as to be easily pinched by a tool such as pliers.

Next, FIG. 8 (a) shows an embodiment of the caulking work in the third example of the caulking ring of the coaxial cable of the present invention.
(B). First, as shown in FIG. 8 (a), the coaxial cable 9 having a coaxial plug attached to the tip thereof is inserted into the coaxial cable crimp ring 21, and the grip portion of the pliers 101 becomes the knob seat 26 of the coaxial cable crimp ring 21. The thick portion 27 is brought into contact. Then, the thick portion 27 is caulked with 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 circumference of the coaxial cable caulking ring 21. Therefore, it is possible to prevent the coaxial cable caulking ring 21 from being eaten by the pliers during the caulking work. Further, even if the blade portions such as nippers and pliers are brought into contact with the knob seat 26 and caulked, since the knob seat is thick, there is no fear of cutting,
The caulking work can be performed with various tools. It should be noted that the actions that can be achieved by the first and second examples described above can also be achieved by the third example.

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

[0023]

Since the coaxial cable caulking ring of the present invention is configured as described above, the lever principle can be utilized for caulking due to the M-shaped portion, and thereby the workability is improved with less force. You can crimp. Also,
After crimping, the entire ring can be evenly attached to the coaxial cable, and the protrusion that serves as a fulcrum can be moved according to the diameter of the cable, so it is common for multiple coaxial cables with different diameters. Can be used.
In addition, the M-shaped configuration allows the knob seat to be easily provided and prevents slippage during caulking work.

Further, even after the caulking is performed once, the caulked M-shaped portion can be easily loosened by inserting a minus driver between the coaxial cable and the protrusion, and the caulking can be repeated by caulking again. You can also use a ring. Furthermore, by forming a thick portion serving as a knob seat on the side surface of the M-shaped portion, it is possible to prevent the coaxial cable caulking ring from being cut off by the pliers when the knob seat is added and crimped with pliers or the like. it can. Furthermore, even if the blade parts such as nippers and pliers are brought into contact with the knob seat and caulked, if the knob seat is made thick, there is no danger of cutting and it is possible to perform caulking work with various tools. can do.

[Brief description of drawings]

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

2A and 2B are views showing a first example of the embodiment of the coaxial cable caulking ring of the present invention, in which FIG. 2A is a front view thereof, and FIG.
Is a top view, and (c) is a side view.

3A and 3B are views showing a second example of the embodiment of the coaxial cable caulking ring of the present invention, in which 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 a second example.

FIG. 5 is an exploded view of the coaxial cable caulking ring of the present invention assembled and assembled.

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

FIG. 7 is a diagram for explaining problems in 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 showing a mode of caulking work in the 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 of the present invention, in which FIG. 9A is a front view thereof, and FIG.
Is a top view, and (c) is a side view.

FIG. 10 is a diagram 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 diagram illustrating 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 Meat barb for preventing cracking 5,15,25 Projection part 6,16,26 Knob Seat 7,17 Caulking and bending guide 8,18 Caulking part 9 Coaxial cable 10 Coaxial plug 27 Thick wall part

Claims (5)

[Claims] 1. A coaxial cable caulking ring used for closely fixing a coaxial plug to a coaxial cable, comprising a semicylindrical portion and an M-shaped portion connected to the semicylindrical portion. Cable caulking ring. 2. A coaxial cable caulking ring used for tightly fixing a coaxial connector 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 characterized by having a recess that serves as a caulking bending guide. 3. The coaxial cable caulking ring according to claim 1 or 2, wherein each of the M-shaped portions has a semicircular recess for preventing cracks inside the bending portion. 4. The coaxial cable caulking ring according to claim 1, wherein the M-shaped portion is a recessed portion. 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, and on a side surface of the M-shaped portion. A coaxial cable caulking ring characterized in that a thick portion serving as a knob seat is formed.