JPH0743977Y2 - Coaxial cable connector - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coaxial cable in which the inner conductor of a coaxial cable is held by a center contact housed inside at the tip end side of a connector body, and the outer conductor of the coaxial cable is held at the rear end side. It is related to the connector.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Utility Model Publication No. 2-5504, a pressure receiving ring and a clamp ring are housed in a tightening metal fitting adjacent thereto, and a rear end of a connector body is screwed into the tightening metal fitting. When the clamp ring is inserted and the clamp is tightened, the clamp ring moves inside the clamp, and the hollow cylindrical part of the clamp ring is forcibly bent by the funnel-shaped inner edge of the pressure receiving ring, and the outer jacket of the coaxial cable. There is a structure in which the outer conductor side of the coaxial cable is held by being bitten into.

[0003]

In the above-mentioned conventional example, the hollow cylindrical portion of the clamp ring is made to bite into the jacket of the coaxial cable, and the biting pressure through the insulator causes the outer conductor and the inner side of the outer conductor to be caught. It is designed to maintain the electrical contact of the reinforcing sleeve placed on the outer surface of the coaxial cable.However, if a tensile force due to wind pressure or other external force acts on the coaxial cable, the jacket may be cracked. Is loosened, and the outer conductor may slide on the reinforcing sleeve, which may impair the electrical characteristics.

The present invention was devised for the purpose of eliminating the drawbacks of the conventional example.

[0005]

A connector for a coaxial cable, wherein an inner conductor of a coaxial cable is held by a center contact housed inside at a tip side of a connector body, and an outer conductor of the coaxial cable is held at a rear end side. In, an engaging step is provided on the inner peripheral surface of the connector main body, a clamp ring is engaged with the engaging step and assembled to the connector main body, and an outer diameter is provided in the front end direction of the clamp ring. Providing a tapered outer peripheral surface,
A taper inner peripheral surface having a larger inclination angle than the taper outer peripheral surface is provided at the tip of the engagement step portion to bring the inner peripheral surface into contact with the outer peripheral surface, and a pressing ring is arranged on the rear side of the clamp ring, The split clamp is held by reducing the diameter of the pressing ring, and a collar piece provided at the tip of the split clamp and protruding from the pressing ring is provided between the tip surface of the pressing ring and the rear end surface of the clamp ring. The rear part of the pressing ring that is interposed and protrudes from the moving gap of the pressing ring provided in the connector body is housed in the tightening metal fitting having the pressing edge of the pressing ring inside, and the connector body is attached to the tightening metal fitting. The outer conductor of the coaxial cable assembled by screwing the cylindrical reinforcing sleeve into contact with the inner peripheral surface of the coaxial cable is inserted into the split clamp and the clamp ring through the tightening fitting to be in contact therewith.

[0006]

1 is a sectional view, FIG. 2 is a partially enlarged sectional view, and FIG. 3 is a split clamp of a coaxial cable connector according to the present invention. The front view and FIG. 4 are sectional views taken along the line 3a-a.

In the drawings, reference numeral 1 denotes a connector body, 2 denotes an engaging step portion provided on an inner peripheral surface of an intermediate portion of the connector body 1, respectively, and a tip end portion of the engaging step portion 2 has an obtuse cross section and a tapered inner peripheral surface. 3, the taper outer peripheral surface 4 having a smaller inclination angle than the taper inner peripheral surface 3 is provided on the clamp ring 5 so that the tip end side of the clamp ring 5 in the axial direction is gradually reduced in outer diameter in the tip end direction. The taper outer peripheral surface 4 is brought into contact with the taper inner peripheral surface 3 so that the clamp ring 5 is engaged with the engagement step portion 2 and assembled to the connector body 1.

The pressing ring 6 has a male screw 7 on the outer peripheral surface on the front end side, and the male screw 7 is threadedly passed through a female screw 8 provided on the inner peripheral surface on the rear end portion of the connector body 1. Is assembled to the main body 1.

A split clamp 24 is held in the small diameter portion 6'on the tip side of the pressing ring 6 by reducing the diameter of the split clamp 24. The split clamp 24 is provided with a slit 25 along the axial direction over the entire length. , The front end portion is provided with a plurality of axial notches and the tip end side thereof is bent at a substantially right angle to form crocodile pieces 26, 26, and the rear end portion is provided with axial notches at the edge portion. A plurality of engaging portion pieces 27, 27, each of which is provided by expanding the front end side thereof, are provided. The engaging portion pieces 27, 27 ... Are reduced in diameter and inserted into the pressing ring 3. While locking the small-diameter portion 6'to the rear edge of the collar portion 26, 26
Are projected from the pressing ring 6 and are held by the pressing ring 6 so as to be interposed between the front end surface 6a of the pressing ring 6 and the rear end surface 5b of the clamp ring 5.

A moving gap 9 is provided between the tip surface 6a of the pressing ring 6 and the connector body 1, and the moving ring 9 is provided.
The rear end of the clamp ring 5 protruding from the engagement step portion 2 into the moving gap 9 is brought into contact with the tip end of the pressing ring 6, and the pressing ring 6 is arranged so as to move in the moving gap 9 while pressing the clamp ring 5. I am letting you.

Reference numeral 10 denotes a tightening metal fitting. The tightening metal fitting 10 is provided with a female screw 11 on the inner peripheral surface on the front end side, and this female screw 11 is screwed onto a male screw 12 formed on the outer peripheral surface on the rear end side of the connector body 1. It is assembled to the connector body 1 and the tightening fitting 10
The housing accommodates a rear portion of the pressing ring 6 protruding from the connector body 1 and a gasket 13 arranged adjacent to the rear portion.

The rear portion 10a of the fastening member 10 constituting the housing portion 14 of the gasket 13 is made thick, and the front end surface of the rear portion 10a serves as the pressing edge 15, and the pressure receiving edge 16 against which the pressing edge 15 is pressed is pressed. It is projected on the outer circumference of the ring 6.

After the outer conductor 81 having the reinforcing sleeve 17 assembled therein is inserted into the connector body 1 through the gasket 13, the split clamp 24 and the clamp ring 5, the fastening metal fitting 10 is screwed into the connector body 1. When tightened, the pressing ring 6 is initially pressed by the gasket 13 and presses the clamp ring 5.

When the tightening operation is continued, the gasket 13 is deformed and press-contacts with the jacket 82 of the coaxial cable 80 to maintain watertightness, while the pressing edge 15 is pressed by the pressure receiving edge 16.
The clamp ring 5 in contact with the tip end surface 6a of the pressing ring 6 is further pressed, and the inner peripheral surface of the engaging step portion 2 is tapered. The tapered outer peripheral surface portion 4 moves along the surface 3 and the tip portion deforms, presses against the outer conductor 81 and holds it, and the split clamp 24 and the outer conductor 81 come into surface contact with each other to complete the holding work. .

In the figure, 18 is a mounting member assembled on the tip side of the connector body 1, 19 is a first insulator housed in the mounting member 18, 20 is a second insulator, and 21 is a third insulator. And a center contact 22 is arranged between these insulators 19, 20 and 21, respectively.
Is deformed by the deformation action of the third insulator 21 by the fourth insulator 23 pressed against the connector body 1 to hold the inner conductor 83.

[0016]

[Advantages] Since the present invention has the above-described structure, the propulsive force when the tightening fitting is tightened surely acts as a pressing force of the rear end of the clamp ring via the pressing ring, and thus the tapered outer peripheral surface The outer end of the clamp ring with the grabs the outer conductor by slidingly deforming inward by the tapered inner peripheral surface provided on the engagement step of the connector body,
Since the taper inner peripheral surface provided on the engaging step has a larger inclination angle than the taper, it becomes an acute angle than the deformation of the tip of the clamp ring, and it bites into the entire circumference of the cable outer conductor without a minute, so it is strong. It has a good gripping force and, together with the gasket arranged at the rear end of the tightening fitting, exhibits high water tightness. Also, since the split clamp is interposed between the pressing ring and the outer conductor, a high contact pressure can be obtained in the axial direction due to the elastic force of the split clamp, and the contact resistance can be kept low. Since the collar piece provided at the tip of the clamp is stably contacted with the connector body through the split clamp, it is possible to reliably prevent leakage of radio waves and mixing of external radio waves.

[Brief description of drawings]

1 is a cross-sectional view of a coaxial cable connector of the present invention.

2 is a partially enlarged cross-sectional view of FIG.

FIG. 3 is a front view of the split clamp.

FIG. 4 is a sectional view taken along line 3a-a of FIG.

[Explanation of symbols]

 1 Connector Main Body 2 Engagement Step 3 Tapered Inner Surface 4 Tapered Outer Surface 5 Clamp Ring 6 Push Ring 9 Moving Gap 10 Tightening Fitting 15 Push Edge 17 Reinforcement Sleeve 24 Split Clamp 26 Collar Piece 81 External Conductor

Claims (1)

[Scope of utility model registration request] 1. A coaxial cable connector in which an inner conductor of a coaxial cable is held by a center contact housed inside at a tip end side of a connector body, and an outer conductor of the coaxial cable is held at a rear end side thereof.
An engaging step portion is provided on the inner peripheral surface of the connector body, and a clamp ring is engaged with the engaging step portion to be assembled to the connector body, and the outer diameter is gradually reduced toward the tip end side of the clamp ring. The tapered outer peripheral surface is provided, and the tapered inner peripheral surface having a larger inclination angle than the tapered outer peripheral surface is provided on the tip side of the engaging step portion so that the inner peripheral surface comes into contact with the outer peripheral surface and the rear side of the clamp ring. A pressing ring is arranged on the pressing ring, and the split clamp is held by shrinkingly engaging the pressing ring, and a collar piece that is provided at the tip of the split clamp and protrudes from the pressing ring is attached to the tip surface of the pressing ring and the clamp ring. The rear part of the pressing ring, which is interposed between the rear end face and the rear end face and protrudes from the moving gap of the pressing ring provided in the connector body, is housed in the tightening metal fitting having the pressing edge of the pressing ring inside.
The outer conductor of the coaxial cable assembled by screwing the connector body into the tightening metal fitting and contacting the inner surface of the cylindrical reinforcing sleeve is inserted into the split clamp and clamp ring through the tightening metal member. The connector for the coaxial cable.