JPH07288161A - Connector for coaxial cable - Google Patents

Abstract

PURPOSE:To make stable pressure connection by sticking fast and fixing a inner cover, which covers the center conductor of a coaxial cable, with ferrules, and also, making connection without folding a shield wire by a tubular external conductor. CONSTITUTION:A tubular lock 11 is provided at one end of a first cover 10, and a pair of elastic ferrules 12 and 13, which stick fast to the periphery of an inner conductor 1b being calked and clamped, are provided at the other end. A pair of ferrules 12 and 13 are calked and clamped to stick fast to the periphery of the covered substance 1b, and after bumping of the cover 10 and a second cover 20, those are fixed with adhesive tapes 21 and 22. Furthermore, a shield wire 1c folded in advance is returned in the original direction by returning the tubular outer conductor 30, which has approximately the same diameter as the outside diameter of a coaxial cable 11, to the side of the lock part 11 of the cover 10. Hereby, the shield wire 1c is brought into contact with the inner face of the conductor 30 without being folded, thus stable pressure connection of a cable 11 with a relatively small diameter can be made.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable connector applied to crimp connection of a coaxial cable having a relatively small outer diameter.

[0002]

2. Description of the Related Art Conventionally, as a connector for a coaxial cable of this type, as disclosed in Japanese Utility Model Publication No. 2-6628, for example, a type in which a shielded wire of a coaxial cable is connected in a folded state is used. is there. FIG. 13 is a side sectional view showing the connected state of the coaxial cable connector.

In this connector, a cylindrical holding body 6 is fitted to a coaxial cable 1 in a wire end processed state (cable stage cut state), and the cylindrical holding body 6 and the folded shielded wire 1c are formed into a tube. The outer conductor 30 is closely fitted.

FIGS. 14 (a) to 14 (f) show the procedure for assembling this connector by process. First, Fig. 1
After processing the coaxial cable 1 as shown in FIG. 4 (a) to expose the central conductor (core wire) 1a and the shield wire 1c, as shown in FIG. 14 (b), it is composed of a connecting portion 2a and a crimping portion 2b. The center contact 2 and the ferrule 8 are attached to the coaxial cable 1. Here, the center contact 2 is attached by crimping the crimp portion 2b to the center conductor 1a, and the ferrule 8 is attached so as to surround the protective body 1e provided on the outermost periphery of the coaxial cable 1.

Next, as shown in FIG. 14 (c), the shielded wire 1c is folded back to extend along the outside of the ferrule 8.
As a result, the inner coating layer 1b is exposed, but by further fitting the cylindrical holder 6 into the center contact 2 and the inner coating layer 1b, the state shown in FIG. 14D is obtained. Here, one end of the cylindrical holding body 6 has a shield wire 1
Although contacted with the bent portion of c, the outer diameter of the cylindrical holding body 6 is substantially equal to the outer diameter of the coaxial cable 1.

Subsequently, as shown in FIG. 14 (e), the cylindrical outer conductor 30 is closely fitted to the outside of the cylindrical holder 6 and the shield wire 1c, and a plurality of hexagons are provided at the outer peripheral position corresponding to the shield wire 1c. By forming the caulking portion 32,
Prevent from falling out. Finally, as shown in FIG. 14 (f), a part of the tube 15 is covered with the ferrule 8 to complete the assembly of the connector.

[0007]

In the case of the above-mentioned coaxial cable connector, the shield wire folded back on the ferrule provided outside the protective body of the coaxial cable is closely fitted with the cylindrical outer conductor. Assembling is complicated and time-consuming, and the outer diameter of the tubular outer conductor becomes large. In particular, when the coaxial cable is slender, there is a problem in that the tubular outer conductor of the connector becomes large and ugly.

The present invention has been made to solve the above problems, and its technical problem is that the assembly is easy and stable crimp connection can be made to a coaxial cable having a relatively small outer diameter. It is to provide a connector for a thin coaxial cable.

[0009]

According to the present invention, a center contact to be connected to a center conductor of a coaxial cable and an insulative inner coating covering the center contact and the center conductor are housed, and one end of the center contact is housed. First provided with a tubular locking portion
And a second lid body that cooperates with the first lid body to accommodate the center contact and the inner coating body, and is abutted on the tubular locking portion and provided on the outermost periphery of the coaxial cable. In a coaxial cable connector including a protective body and a tubular outer conductor that accommodates the first and second lids, the center contact includes a crimp crimping portion for crimping and crimping the center conductor, and the tubular locking portion is It has an opening for inserting the contact of the mating connector, and the outer diameter of the end surface near the opening is smaller than the outer diameter of the tubular outer conductor, and the first lid member extends from the end surface near the opening. A coaxial cable connector in which the side surface extending in the extending direction is inclined in a tapered shape is obtained.

Further, according to the present invention, in the above-mentioned coaxial cable connector, recesses are provided on the outer sides of the first and second lids, respectively, and the cylindrical outer conductors corresponding to the recesses are pulled out at predetermined positions. A coaxial cable connector provided with a stop prevention part is obtained.

Furthermore, according to the present invention, in any one of the coaxial cable connectors described above, the first lid is provided at the other end and is crimped and crimped to elastically adhere to the outer periphery of the inner cover. A coaxial cable connector including a ferrule to be obtained is obtained.

In addition, according to the present invention, in the above-mentioned coaxial cable connector, a pair of coaxial cables having ferrules facing each other can be obtained.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The coaxial cable connector of the present invention will be described in detail below with reference to the accompanying drawings.
First, the procedure for assembling the coaxial cable connector according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5 and 6 to 1.
This will be described with reference to FIG.

FIG. 1 is a perspective view showing a coaxial cable 1 in a line end processed state, which is a connection target by the coaxial cable connector of the present invention.

This coaxial cable 1 has a central conductor (core wire).
1a is covered with an insulative inner cover 1b, and a shield wire 1c is further arranged around the inner cover 1b. Then, the shield wire 1c is covered with an outer cover 1d, and then a protector 1e is provided on the outermost periphery. It has a configuration provided. The configuration of the coaxial cable 1 is the same as that of a normal one, but the overall wire diameter is relatively fine. In the state shown in the figure, the shielded wire 1c
Of the tubular outer conductor 3 described later in advance
It is shown that 0 is inserted in the protective body 1e located deeper than the line end cut portion.

FIG. 2 is a perspective view showing the connection positional relationship of the center contact 2 connected to the coaxial cable 1. Center contact 2 used here
Has a connecting portion 2a for inserting and connecting a contact of a mating connector (not shown) and a crimping portion 2b for crimping and crimping the center conductor 1a of the coaxial cable 1.

FIG. 3 shows a first cover 10 for accommodating the center contact 2 connected to the coaxial cable 1 and an inner cover 1b of the coaxial cable 1, and the first cover 1.
It is a perspective view showing the connection positional relationship with the second lid body 20 that is abutted between the two.

Here, a tubular locking portion 11 is provided at one end of the first lid body 10, and a pair of elastic members which are brought into close contact with the outer periphery of the inner cover 1b by crimping and crimping at the other end. Ferrules 12 and 13 are provided. or,
A concave portion 14 is formed at a substantially outer center of the first lid body 10. The tubular locking portion 11 has an opening 11a for inserting a contact of a mating connector.
The outer diameter of the end face near a is smaller than the outer diameter of the tubular outer conductor 30. Further, the tubular locking portion 11 has an opening 11a.
The side surface extending in the extending direction of the first lid 10 from the end face in the vicinity has a tapered shape.

Incidentally, FIG. 6 is a plan view showing the first lid 10 excluding the ferrules 12 and 13, and FIG. 7 is a sectional view showing its internal structure. Inside the first lid 10, the lower half of the connecting portion 2a and the crimping portion 2b of the center contact 2 and the center conductor 1 of the coaxial cable 1 are provided.
Storage grooves are formed so that a and the lower half of the inner cover 1b can be stored without displacement.

On the other hand, the second lid body 20 is abutted against the first lid body 10 to accommodate the ends of the center contact 2 and the inner cover 1b, and has the first dimension in the longitudinal direction. It has the same size as the portion of the lid 10 excluding the ferrules 12 and 13. Further, a concave portion 23 is formed at a substantially outer center of the second lid body 20, and adhesive tapes 21 and 22 are attached to both sides of the concave portion 23.

FIG. 8 shows the second lid 20 in a plan view, and FIG. 9 shows its internal structure in a sectional view. The upper half of the connecting portion 2a and the crimping portion 2b of the center contact 2 and the upper half of the center conductor 1a and the inner cover 1b of the coaxial cable 1 can be housed in the second lid 20 without displacement. , And a storage groove is formed in each.

FIG. 4 shows a first lid 10 and a second lid 2.
It is a perspective view showing a connection state of 0. Here, first, a pair of ferrules 12 and 13 is caulked and pressure-bonded to be closely attached to the outer periphery of the inner cover 1b, and the first lid 10 and the second lid 20 are butted, and then the adhesive tapes 21 and 2 are attached.
It shows a state of being fixed at 2. Furthermore, the shielded wire 1c that has been folded back in advance is returned in the original direction by pulling the tubular outer conductor 30 back to the tubular locking portion 11 side of the first lid 10. As a result, the shield wire 1c is brought into contact with the inner surface of the cylindrical outer conductor 30 without folding back.

Incidentally, FIG. 10 shows the first lid 10 and the second lid 10.
FIG. 11 is a side view showing the butted body of the lid body 20 of FIG. 11, and FIG. 11 is a sectional view showing the internal structure thereof. Inside the butting body, the center contact 2
A storage space is formed so that the connection portion 2a and the crimp portion 2b (including the bridge portion connecting between them), the center conductor 1a of the coaxial cable 1, and the inner cover 1b can be stored without displacement.

FIG. 5 shows a cylindrical outer conductor 30 for the first lid 1.
It is a perspective view showing a state in which the 0 and the second lid 20 and the pair of ferrules 12 and 13 are housed. Here, the first lid body 10 and the second lid body 20 and the ferrules 12 and 13 are housed in a state where the tubular outer conductor 30 is in contact with the tubular locking portion 11, and the first lid body is housed. 10, second lid 2
0, the recesses 14 and 23 provided in the respective outer central portions
A lance portion 31 (which becomes a convex portion with respect to a concave portion) is formed at an outer peripheral position of the cylindrical outer conductor 30 corresponding to any of the above, and a plurality of lance portions 31 are formed at outer peripheral positions of the cylindrical outer conductor 30 corresponding to the ferrules 12 and 13. The state where the hexagonal caulking portion 32 is formed is shown. These lance part 31 and hexagonal caulking part 32
Serves as a retaining portion in the tubular outer conductor 30 after housing the respective portions.

That is, this coaxial cable connector has a center contact 2, a first lid 10 including a pair of ferrules 12 and 13, a second lid 20, and a cylindrical outer conductor 3.
It consists of 0 and.

FIG. 12 is a side sectional view showing the connected state of the coaxial cable connector according to an embodiment of the present invention.

With this coaxial cable connector,
The cylindrical outer conductor 30 having an inner diameter substantially equal to the outer diameter of the coaxial cable 1 enables connection without folding the shielded wire 1c. Therefore, this coaxial cable connector has a slender shape in appearance with no extra bulge, and stable crimp connection can be performed for the coaxial cable 1 having a relatively small outer diameter. Incidentally, the connection with the mating connector is performed by inserting the contact of the mating connector into the opening 11a of the tubular locking portion 11 using the connector after connecting the coaxial cable 1.

[0028]

As described above, according to the coaxial cable connector of the present invention, the inner coating covering the central conductor of the coaxial cable is closely fixed by the ferrule and is substantially equal to the outer diameter of the coaxial cable. Since the cylindrical outer conductor having the inner diameter is used for connection without folding back the shielded wire, stable crimp connection can be performed for a coaxial cable having a relatively small outer diameter. As a result, it is possible to provide a connector for a coaxial cable having a slender shape that can be easily assembled and can be connected to a mating connector without requiring an occupied space.

[Brief description of drawings]

FIG. 1 is a perspective view showing a coaxial cable in a wire end processed state which is a connection target by the coaxial cable connector of the present invention.

FIG. 2 shows a coaxial cable connector of the present invention, and FIG.
FIG. 3 is a perspective view showing a connection positional relationship of center contacts connected to the coaxial cable shown in FIG.

FIG. 3 shows a coaxial cable connector of the present invention, and FIG.
FIG. 3 is a perspective view showing a connection positional relationship between a first lid body that houses the center contact and the inner coating body of the coaxial cable, and a second lid body that is abutted between the first lid body and FIG. is there.

FIG. 4 is a perspective view showing a connected state of the first and second lids shown in FIG.

FIG. 5 is a perspective view showing a state in which a first lid body and a second lid body and a pair of ferrules are housed in a tubular outer conductor.

FIG. 6 is a plan view showing a first lid body excluding a ferrule.

7 is a side sectional view showing an internal structure of the first lid body shown in FIG.

FIG. 8 is a plan view showing a second lid body.

9 is a side cross-sectional view showing the internal structure of the second lid body shown in FIG.

FIG. 10 is a side view showing a butted body of the first lid and the second lid.

11 is a side sectional view showing an internal structure of the butted body shown in FIG.

FIG. 12 is a side sectional view showing a connected state of the coaxial cable connector according to the embodiment of the present invention.

FIG. 13 is a side sectional view showing a connected state of a conventional coaxial cable connector.

14 (a) to 14 (f) show the procedure for assembling the coaxial cable connector shown in FIG. 13 for each step.

[Explanation of symbols]

 1 coaxial cable 1a central conductor 1b inner sheath 1c shielded wire 1d outer sheath 1e protector 2 center contact 2a connecting part 2b crimping part 6 cylindrical retainer 8, 12, 13 ferrule 10, 20 lid 11 tubular locking Part 11a Opening part 14,23 Recessed part 15 Tube 21,22 Adhesive tape 30 Cylindrical outer conductor 31 Lance part 32 Hexagonal caulking part

Front page continuation (72) Inventor Jun Sekiguchi 5-7-1, Shiba, Minato-ku, Tokyo NEC Corporation Stock company (72) Masahiro Yamauchi 5-7-1, Shiba, Minato-ku, Tokyo NEC Corporation In the company

Claims (4)

[Claims] 1. A center contact to be connected to a center conductor of a coaxial cable, and an insulative inner cover that covers the center contact and the center conductor are housed, and a cylindrical locking portion is provided at one end. A first lid body, a second lid body that cooperates with the first lid body to house the center contact and the inner coating body, and is in contact with the tubular locking portion, and is coaxial. The protector provided on the outermost periphery of the cable and the first
A coaxial cable connector including a cylindrical outer conductor that houses the second lid, and the center contact includes a crimp crimping portion that crimps and connects the center conductor,
The tubular locking portion has an opening for inserting a contact of a mating connector, and an outer diameter of an end face near the opening is smaller than an outer diameter of the tubular outer conductor, and the opening is in the vicinity of the opening. A connector for a coaxial cable, wherein a side surface extending from an end surface of the first lid in an extending direction of the first lid is tapered. 2. The coaxial cable connector according to claim 1, wherein recesses are provided on the outer sides of the first and second lids, respectively, and at predetermined positions of the cylindrical outer conductor corresponding to the recesses. A coaxial cable connector, which is provided with a retaining portion. 3. The coaxial cable connector according to claim 1 or 2, wherein the first lid is provided at the other end and elastically adheres to the outer periphery of the inner cover by crimping. A coaxial cable connector that includes a ferrule. 4. The coaxial cable connector according to claim 3, wherein the ferrules are composed of a pair of members facing each other.