JPH0745909Y2 - connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a connector for mounting a cable, and more particularly to a connector characterized by a cable mounting structure for mounting a cable on the connector.

[Prior Art] Conventionally, as a connector for attaching a cable, for example, a connector as shown in FIG. 4 has been used. As shown in the figure, inside the housing 1, an internal contact 5 that is connected to the cable internal conductor 3 of the cable 2 via an insulating member 4 is provided. The inner contact 5 is insulated and held from the connector outer conductor 6 connected to the housing 1 by the insulating member 11. The outer conductor 6 of the connector is provided with a cylindrical cable attachment portion 7 having a knurled outer periphery. The cable outer conductor 8 is externally inserted into the cable mounting portion 7, and the cable inner conductor 3 covered with the cable insulator 9 is inserted inside the cable mounting portion 7 as described above. Is connected to the internal contact 5 of. Then, after moving the caulking ring 10 which has been passed through the cable 2 in advance to the position where the cable outer conductor 8 is externally inserted in the cable mounting portion 7, the caulking ring 10 is moved.
The cable outer conductor 8 is crimped to the cable mounting portion 7 by crimping 10 to connect the cable outer conductor 8 and the connector outer conductor 6.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional connector, the outer periphery of the cable attachment portion is knurled so that the outer conductor of the cable to be crimped does not easily come off, but the outer diameter is equal over the entire length. Since it has a cylindrical shape, the cable holding force is not always sufficient, and especially when the cable to be attached is thin, the area of the crimping part is small, so the cable holding force of the connector is weak, and it is necessary to route it for wiring or to connect the connectors. There is a problem that the cable may come off when the two are connected.

The present invention solves the above problems and provides a connector excellent in cable holding force capable of securely connecting a connector and a cable mechanically and electrically without lowering workability. With the goal.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the connector of the present invention has a cylindrical shape in which a cable outer conductor of a cable to be attached is externally inserted and electrically and mechanically connected. A connector outer conductor having a cable mounting portion provided with a convex portion in the circumferential direction on the outer circumference at the tip end side, an inner contact connecting to the cable inner conductor of the cable to be mounted, and a cable outer conductor externally inserted in the cable mounting portion. , An annular crimping member that is arranged to cover a portion of the cable mounting portion that is externally inserted in the base end portion where the convex portion is not formed, and crimps the cable outer conductor to the base end portion of the cable mounting portion. By crimping, the outer conductor of the cable is crimped to the convex portion of the cable mounting portion, and the outer conductor of the cable is attached to the base end portion of the cable mounting portion through the crimping member. Crimping, and a caulking ring substantially covers the extrapolated portion and the crimp members on the cable attachment portion of the cable outer conductor.

[Operation] In the connector of the present invention, since the outer diameter of the convex portion provided on the outer periphery of the tip end side of the cable attachment portion is larger than the outer diameters of the other portions, a step portion is formed there. Effectively prevent the cable outer conductor from being pulled out. That is, by the caulking ring and the annular crimping member, the cable outer conductor is provided on the tip side of the cable attachment portion where the convex portion is formed and the portion where the convex portion of the base end portion is not formed and has a small outer diameter. As a result of being pressed, the inner diameter of the cable outer conductor pressed against the base end portion of the cable attachment portion by the crimping member is smaller than the outer diameter of the tip end portion having the convex portion, and the crimping member is interposed by the crimping ring. The outer conductor of the cable is securely connected and held to the outer periphery of the cable attachment portion and is not easily pulled out because the outer conductor is securely tightened and held so that the diameter does not increase.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. First
The figure shows a state in which a cable is connected to the connector according to the present invention. As shown in the figure, the connector of the present invention has an inner contact 5 which is connected to the cable inner conductor 3 of the cable 2 through an insulating member 4 inside the housing 1.
The inner contact 5 is insulated and held from the connector outer conductor 6 connected to the housing 1 by the insulating member 11. Connector outer conductor 6 is cable outer conductor 8
Is provided with a cylindrical cable attachment portion 7 for connecting to. A convex portion 7A is provided on the outer circumference of the tip of the cable mounting portion 7.
Is formed, and the outer diameter of this part is
Is larger than the outer diameter of the base end portion 7B where the convex portion is not formed. The outer circumference of the convex portion 7A is provided with a knurl to increase the frictional resistance with the outer conductor 8 of the cable to be externally inserted. Further, the connector of the present invention is arranged so as to cover the portion of the cable outer conductor 8 that is externally inserted outside the base end portion 7B. The cable outer conductor 8 is crimped to the base end portion 7B of the cable attachment portion 7. A ring-shaped crimping member 12 (FIG. 2) having a notch, and is arranged outside the cable outer conductor 8 and the crimping member 12 which are externally inserted in the connector mounting portion 7. A cylindrical caulking ring 10 is provided for pressing the crimping member 12 and the cable outer conductor 8 by crimping to crimp the cable outer conductor 8 to the base end portion 7B and the convex portion 7A of the cable mounting portion 7.

Next, the connection between the connector and the cable will be described. The cable outer conductor 8 is externally inserted into the cable attachment portion 7 described above, and the inner conductor 3 covered with the cable insulator 9 is inserted and connected to the inner contact 5. Next, an annular crimping member having a notch at a position corresponding to a portion of the cable outer conductor 8 that is externally inserted into the base end portion 7B of the cable attachment portion 7.
Insert 12. FIG. 3 shows the crimp member 12 with the cable outer conductor 8
The state of being arranged outside is shown. Then, the caulking ring 10, which has been passed through the cable 2 in advance, is moved to a position corresponding to the cable mounting portion 7 on which the cable outer conductor 8 is inserted, and the caulking ring 10 is caulked, whereby the cable of the cable outer conductor 8 is moved. The portion externally attached to the attachment portion 7 is crimped to the cable attachment portion 7 to connect them. That is, of the portion of the outer cable conductor 8 that is externally inserted into the cable mounting portion 7, the portion that covers the base end portion 7B of the cable mounting portion 7 is crimped to the base end portion 7B by the annular crimping member 12, and A portion of the conductor 8 covering the convex portion 7A of the cable attachment portion 7 is crimped to the convex portion 7A by the caulking ring 10. At this time, the inner diameter of the portion of the cable outer conductor 8 pressed by the crimping member 12 becomes smaller than the outer diameter of the convex portion 7A of the cable mounting portion 7, and the caulking ring 10 clamps the inner diameter so that the diameter is not increased. Therefore, the cable outer conductor 8 is securely connected to the cable mounting portion 7 and is not pulled out.
Further, in the above embodiment, since the outer periphery of the convex portion 7A of the cable mounting portion 7 is knurled, the cable outer conductor 8 is sufficiently held against the force applied in the circumferential direction, and a more reliable connection is realized. To be done.

When connecting the cable 2 to the connector, when the cable outer conductor 8 is crimped to the cable mounting portion 7, the cable outer conductor 8 is connected to the cable mounting portion 7 as in the above embodiment.
After being externally inserted into the cable, an annular crimping member 12 having a notch may be arranged so as to be fitted to the outer side thereof. Alternatively, the crimping member 12 may be passed through the cable 2 in advance and slid. Good. In the latter case, the annular crimping member does not need to have a notch, and in the case of having a notch, a notch is provided to prevent the crimping member 12 from falling off the cable 2. The width is preferably smaller than the outer diameter of the cable 2.

Also, connect the cable outer conductor 8 to the base end portion 7B of the cable attachment portion 7.
In order to perform sufficient crimping, the axial length of the crimping member 12 substantially corresponds to the axial length of the base end portion 7B of the cable attachment portion 7 where the convex portion 7A is not formed, and , Base end 7B
It is desirable to be a little smaller than the length of. However, in the case of using a flexible material, it is possible to sufficiently crimp the cable outer conductor 8 to the base end portion 7B even if the length thereof is longer than the base end portion 7B.

In the above embodiment, the case where the inner conductor of the cable is a single core has been described, but the present invention can be applied to the case where the inner conductor of the cable is a multi-core.

[Effects of the Invention] The connector of the present invention is configured as described above, and the cable outer conductor includes a distal end portion where the convex portion of the cable attachment portion is formed and a proximal end portion where the convex portion is not formed. Since the convex portion having a large outer diameter is prevented from coming off, the cable holding force is sufficient even when the crimping area is small, and reliable connection can be achieved. Further, even if the crimping area is small, sufficient connection is possible, so that the cable mounting portion can be downsized.

[Brief description of drawings]

FIG. 1 is a sectional view showing a connector according to an embodiment of the present invention, FIG. 2 is a perspective view showing an annular crimping member according to the present invention, and FIG. 3 is a view showing a process of connecting a connector and a cable. The figure is a cross-sectional view showing a conventional connector. 3 ... Cable internal conductor, 5 ... Internal contact, 6 ...
... Connector outer conductor, 7 ... Cable mounting part, 7A ... Convex part, 7B ... Base end part, 8 ... Cable outer conductor, 10 ... Caulking ring, 12 ... Crimping member

Claims (1)

[Scope of utility model registration request] 1. A connector outer conductor having a cylindrical cable attachment portion provided with a convex portion in the circumferential direction on the outer periphery at the tip side, to which the cable outer conductor of the cable to be attached is externally inserted and electrically and mechanically connected. An inner contact that connects to the cable inner conductor of the cable to be attached, and a cable outer conductor that is externally inserted to the cable attachment part, and is externally attached to the base end part where the convex part of the cable attachment part is not formed. The ring-shaped crimping member that is arranged to cover the part that covers the cable outer conductor and crimps the cable outer conductor to the base end of the cable mounting part, and crimps the cable outer conductor to the convex part of the cable mounting part. Crimping the cable outer conductor to the base end portion of the cable mounting portion via the crimping member, a portion of the cable outer conductor externally inserted in the cable mounting portion, and the crimping Connector comprising a crimping ring substantially covers the timber.