JPS6320064Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a connector having a flexible outer shell for, for example, a cord connector body or an insertion plug.

Conventionally, as shown in Figures 1 and 2, this type of connector has a flexible cylindrical outer shell (A) with a base equipped with a contact fitting attached to the bulge (B), and a connection to this contact fitting. A cord opening for pulling the cord outward is formed at the neck of the outer shell. and,
By pressing the neck E to the cord C by the tightening fitting, the tension applied to the cord C is absorbed by the outer shell A, and is prevented from being applied directly to the connection point between the cord C and the connecting fitting. But this one is the second
As shown in the figure, when the neck E is pressed against the cord C using a screw, if the cord C is thin, the end J of the tightening fitting will bite into a part of the neck E, preventing the cord H and the neck E from coming into pressure contact, and the tension will be reduced. The connection between the cord and the contact fitting may be separated due to direct contact with the connection point.

This idea was developed by focusing on the above-mentioned circumstances, and its purpose is to prevent the tension applied to the cord from being applied directly to the connection between the connecting fitting and the cord, even when connecting a thin cord. Provides connectors.

An embodiment of this invention will be described below with reference to FIGS. 3a to 4, in which it is applied to a plug. Reference numeral 1 denotes a device stand, which is equipped with a contact fitting 2, in which a screw hole 3 is formed and a terminal screw 4 is provided. Reference numeral 5 denotes an outer shell made of a flexible resin such as rubber, which includes a bulge 6 on which the device base 1 is attached, and a cord opening 8 for pulling out the cord 7 connected to the terminal screw 4 of the contact fitting 2. It has a cylindrical shape and is connected to a neck 9 through which the cord 7 is passed. Reference numeral 10 denotes a pair of fasteners, each of which is formed by bending the approximate center of a strip and forming a screw hole 11 and a screw insertion hole 12 at both ends, respectively. Reference numeral 13 denotes a screw that brings the fasteners 10 closer to each other. Reference numeral 14 denotes a pair of thin-walled portions, and grooves 15 are provided in parallel to the direction in which the cord 7 is pulled out at positions on the outer surface of the neck portion 9 that correspond to the ends of the fastener 10. 16
are a pair of walls that protrude from the inner surface of the neck portion 9 orthogonal to the thin wall portion 14 to form the cord opening 8 into a circular shape, and further serve as a guide when the cord 7 is inserted in the direction of the cord opening 8. An inclined surface 17 is formed.

Next, the connection work for connecting the cord 7 to the contact fitting 2 will be described. First, the instrument stand 1 is removed from the outer shell 5, and the cord 7 is inserted through the cord opening 8 of the outer shell 5. Then, the terminal screw 4 is tightened, the cord 7 is connected to the contact fitting 2, and the instrument stand 1 is attached to the bulge 6. Thereafter, when the fastener 10 is attached to the neck 9 and the fasteners 10 are pulled together by tightening the screw 13, the thin wall portion 14 is bent and the circumference of the cord opening 8 is reduced by the width of the groove 15. Since the neck 9 is in pressure contact with the cord 7 and the thin part 14 is bent only within the groove 15 or slightly protruding from the groove 15, the fastener 10 does not bite into a part of the neck 9. Furthermore, the wall 16
By forming the cord 7, cords 7 having different shapes such as a round cross section or a circular cross section can also be connected to the contact fitting 2 by pressing against the neck portion 9. Further, as shown in FIG. 5, which is another embodiment of the fastener 10, the approximate center of the strip is curved circularly to form a screw hole 11 and a screw insertion hole 12, respectively, so that a single screw 13 can be used. If it is tightened, the thin wall portion 14 can be formed at only one place, making it easier to manufacture the outer shell 5.

As explained above, in this invention, the groove 15 is provided at the position of the outer surface of the neck portion 9 to which the end of the fastener 10 corresponds, and the thin wall portion 14 is formed. The circumference is reduced by the width of the groove 15, and the neck 9 is in sufficient pressure contact with the cord 7 without the fastener 10 biting a part of the neck 9, so even when connecting a thin cord, the cord 7 The outer shell 5 absorbs the tension applied to the cord so that it is not applied directly to the connection point between the cord 7 and the contact fitting 2, and the cord opening 8 is protruded from the inner surface of the neck 9 perpendicular to the thin wall portion 14. Since the wall body 16 is shaped like an inertia circle and has a sloped surface 17 that serves as a guide when inserting the cord 7 in the direction of the cord opening 8,
The cord 7 has a neck portion 9 that can sufficiently press against cords 7 having different neck shapes such as round and circular shapes.
A connector can be obtained that can be sufficiently pressure-welded to.

[Brief explanation of the drawing]

Figures 1 and 2 show conventional examples of this invention,
FIG. 1 is a top view, and FIG. 2 is a partial cross-sectional top view during wire connection work. 3a to 4 show an embodiment of this invention, in which FIG. 3a is a top view, FIG. 3b is a partially cutaway side view, and FIG. 3c is a partially cutaway front view. FIG. 4 is a partial cross-sectional top view when performing wire connection work. FIG. 5 is a top view showing another embodiment of this invention. 1... Instrument stand, 2... Contact fittings, 3... Screw hole,
4...Terminal screw, 5...Outer shell, 6...Bulge, 7...Cord, 8...Cord opening, 9...Neck, 10...Tightener, 11...Screw hole, 12...
Screw insertion hole, 13...Screw, 14...Thin wall part, 1
5...Groove, 16...Wall body, 17...Slanted surface.

Claims (1)

[Scope of utility model registration request] a flexible cylindrical outer shell that is connected to a device stand equipped with a contact fitting, a bulge on which the device stand is mounted, and a neck portion having a cord opening for pulling out a cord connected to the contact fitting; In a connector consisting of a band-shaped fastener that presses a neck through which a cord is passed from the outside to the cord from the outside, a groove is formed at a position on the outer surface of the neck where the end of the fastener corresponds to form a thin wall part, and The feature is that a pair of walls are provided protruding from the inner surface of the neck perpendicular to the thin-walled portion to form a cord opening in the form of an inertia circle, and have an inclined surface that serves as a guide when inserting the cord in the direction of the cord opening. connector.