JP2003151697A - Locking device for clamp in connecter for coaxial cable - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connecter retaining an initial screwed state between a connecter body and a clamp and capable of favorably retaining the connected state between the coaxial cable and a device. SOLUTION: This locking device is provided with a screw cylinder 4 in a rear end side of the connecter body 1 having its tip side to be attached to the device and connects the coaxial cable C to the device by screwing and fastening the clamp 2 to the screw cylinder 4. A fastening receiver 5 is provided in a base part of the screw cylinder 4 of the connecter body 1. A spring washer 11 is interposed between the fastening receiver 5 and the clamp 2.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing a fastener from loosening in a connector used to connect a coaxial cable to equipment. 2. Description of the Related Art A screw tube is provided at a rear end of a connector body to be attached to a device by means of a screwing (screw connection) means, and a fastening fitting is screwed to the screw tube. A coaxial cable connector for connecting a coaxial cable to the device by tightening a coaxial cable disposed on the axis of the connector main body or the fastener is well known without giving specific examples. [0003] The above-mentioned prior art employs a configuration in which the connector body and the clamp are screwed to each other, the coaxial cable is clamped, and the connector is connected to the device. The threaded state of the connector body and the tightening bracket is loosened,
Poor contact and other various inconveniences may occur. [0004] In view of such circumstances, the present invention has been devised in order to provide a connector that can maintain the initial screwed state of the connector main body and the fastener. [0005] A screw tube is provided at the rear end of the connector body for mounting the front end to the device, and a screw is fastened to the screw tube to connect the coaxial cable to the device. In the connector for a coaxial cable described above, a fastening receiver is provided at a base of the screw cylinder of the connector body, and a spring washer or a coil spring is interposed between the fastening receiver and the fastening fitting. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a locking device for a clamp according to the present invention;
1 is a partially cutaway front view, FIG. 2 is a cross-sectional view of a state where a coaxial cable is assembled, and FIG. 3 is a perspective view of an elastic piece. In the drawing, reference numeral 1 denotes a connector main body, 2 denotes a tightening fitting, and the connector main body has a male screw portion 3 at a front end for connecting to a device and a screw at the rear end side for screwing with the tightening fitting 2. A cylinder 4 is provided, and between the male screw part 3 and the screw cylinder 4, a tool is locked if necessary, and a tightening receiver 5 having a hexagonal cross section with a diameter larger than that of the screw cylinder 4 is provided. It is composed. The fastening fitting 2 is constructed by assembling a rotating cylinder 2A on the front end side and an advancing / retreating cylinder 2B on the rear end side so as to be rotatable with each other by using connecting means 6. The female screw 7 provided on the peripheral surface is screwed and rotated with the screw cylinder 4 to advance and retreat the reciprocating cylinder 2B assembled via the connecting means 6 back and forth. The connecting means 6 engages a connection ring 10 with a guide groove 8 provided on the inner peripheral surface on the rear end side of the rotary cylinder 2A and a guide groove 9 provided on the inner peripheral surface on the distal end side of the reciprocating cylinder 2B. The rotating cylinder 2A, which is connected by the connecting means 6 and constitutes the fastening fitting 2, is freely rotated with respect to the advance / retreat cylinder 2B. Reference numeral 11 denotes a metal spring washer mounted on the screw cylinder 4 of the connector main body 1 so as to penetrate the screw cylinder 4. The spring washer is fastened to the connector main body 1 (screw cylinder 4). When the metal fitting 2 (female screw 7) is screwed, the tightening receiver 5 of the connector body 1 and the tightening metal 2 (rotating cylinder 2)
A) is interposed between the distal ends of A) and pressed between them, so as to be pressed against the fastening fitting 2. The connector of the embodiment is a ferrule 1
2, the clamp 14 is reduced in diameter by the pressure receiving tube portion 12a and the pressing tube 13, and the outer conductor Ca of the coaxial cable C is clamped between the clamp 14 and the clamping tube portion 12b of the ferrule 12. The diameter of the second clamp 17 is reduced by the pressure receiving tube 15 and the pressing tube 16 provided on the rear end side of the clamp 2 so as to clamp the jacket Cb of the coaxial cable C. Hardware 2 (rotating cylinder 2A)
Of the connector main body 1 with the screw cylinder 4. In the figure, reference numeral 18 denotes a center contact, 19, 19
′ Is an insulator, 20 and 20 ′ are gaskets. In addition, a so-called coil spring may be used in place of the spring washer of the embodiment. In other words, any spring having a detachment (shape) elasticity may be used. It is not suitable for application of the invention. Since the present invention has the above-described configuration,
When the fastener is screwed into the screw cylinder and tightened, the spring washer and the like are pinched and deformed by the fastener and the fastener receiver provided on the connector main body to deform and press against the fastener. Regulate the movement (rotation) along the screw,
Prevents loosening of the clamps to the connector body,
A connector for a coaxial cable that can prevent various adverse effects caused by loosening in advance can be provided.

[Brief description of the drawings] FIG. 1 is a partially cutaway front view. FIG. 2 is a sectional view showing a state where a coaxial cable is assembled. FIG. 3 is a perspective view of an elastic piece. [Explanation of symbols] 1 Connector body 2 Tightening bracket 4 Screw tube 5 Tightening 11 Elastic pieces

Claims (1)

Claims: 1. A threaded cylinder is provided at the rear end of a connector main body having a distal end attached to a device, and a fastener is screwed onto the threaded cylinder and tightened to connect a coaxial cable to the device. In the coaxial cable connector, a tightening bracket is provided at a base of the screw cylinder of the connector body, and a spring washer or a coil spring is interposed between the tightening bracket and the tightening bracket. Stop device.