JPH0624127Y2 - Cable connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of the Invention> The present invention relates to a cable connecting device using a connector.

<Prior Art and Problems> As a conventional device of this type, as shown in FIG.
There is one in which a connector main body 101 in 100 is connected to a cable 102 of a fixed length, and the connection portion is resin-molded to form a cover 103.

As for this thing, since the cable is processed to a certain length,
It is not possible to support various cable lengths required by users,
Moreover, since the connector 101 side and the cable 102 side are integrated by the resin mold cover 103, there is an inconvenience that even if the cable 102 has a fixed length at the wiring site, it cannot be connected to the connector 101. Connector 101 and cable 1
When 02 is separately prepared, the core wire of the cable 102 and the connection terminal 104 of the connector 101 must be connected and fixed by soldering or the like, which is troublesome.

<Purpose of the Invention> The present invention has been made in order to solve the problems of the above conventional ones, and provides a cable connecting device which can easily obtain a cable with a connector of an arbitrary length and can simplify the wiring work. Is intended.

<Structure and Effect of the Invention> A cable connecting device according to the present invention is mounted on a connector body having a rear end surface on which a connecting terminal electrically connected to a core wire of a cable is projected, and an outer peripheral surface on the rear side of the connector body. A cylindrical case through which the cable is inserted through the rear end opening, and a cable pressure contact block held in the case. The cable pressure contact block is provided with an electrically insulating base and an electric wire fitted to the base. An insulating cover,
It is composed of a conductive cable connection structure installed between the base and the cover, the cable connection structure, a contact portion that is detachably fitted and connected to the connection terminal of the connector body side, It has a substantially U-shaped slot portion that bites into the cable from the radial direction and contacts the core wire when the base and the cover are fitted together.

According to this invention, the cable press-contact block held in the cylindrical case fitted to the connector body is provided, and the cable and the connector body side are electrically connected via this cable. By simply inserting the cable into the above-mentioned U-shaped slot of the pressure contact block and inserting the contact portion into the connection terminal on the connector body side, wiring work can be performed easily without the need for soldering work, etc. It is possible to easily meet the requirement of any cable length.

<Description of Embodiments> An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing an example of a cable connecting device according to the present invention.

The circular connector 1 in the cable connection device of this example is
A reverse type connector body to which the cable M is connected, an annular fixture 3, a tubular case 4, a tubular seal cap 5, and the like are provided.

The structures on the side of the connector body 2 and the case 4 are shown in FIGS. 2a and 2b.

In the figure, the connector body 2 is formed of an electrically insulating synthetic resin or the like into a substantially cylindrical shape, and the fixing member 3 is provided on the outer peripheral surface of the front portion 2a.
Is rotatably fitted to the outside, and the fixing member 3 is attached to the central portion.
The retaining annular projection 11 is integrally formed. Thirteen
Is an O-ring located on the front side of the annular convex portion 11 and fitted on the outer peripheral surface of the front portion of the connector body 2. A hollow portion 14 is formed along the axial direction in the connector body 2, and a contact 15 is accommodated in the hollow portion 14. A socket-like portion 15a is formed at the front end portion of the contactor 15, and a rear end portion 15b is projected from the rear end surface of the connector body 2 to the outside as a connection terminal.

Reference numeral 16 denotes a first annular groove formed on the outer peripheral surface of the rear portion 2b of the connector body 2, and the first annular groove 16 has:
A C-shaped spring 17 for locking the case is fitted, and its surface is set to float from the outer peripheral surface.
A second annular groove 18 is formed behind the annular groove 16, and an O-ring 19 pressed against the inner peripheral surface of the case 4 described later is fitted in the second annular groove 18. . 20
Is a threaded portion formed on the inner peripheral surface of the fixture 3.

An annular recess 21 is formed on the inner peripheral surface of the case 4 at the front end side. This is the above C-shaped spring 1
It engages with 7 in a detachable manner. Reference numeral 22 is a cable fitting hole in the case 4, and 23 is a cable inserting opening connected to the rear side of the fitting hole 22, the inner peripheral surface of which is formed so as not to extend rearward. Reference numeral 24 denotes a screw portion formed on the outer peripheral surface of the rear portion of the case 4.

The structure around the case 4 and the seal cap 5 will be described with reference to FIGS. 3a and 3b.

In the figure, the seal cap 5 is detachably mounted on the case 4 by screwing a threaded part 25 formed on the front inner peripheral surface of the seal cap 5 into the threaded part 24 on the case 4 side. There is. Reference numeral 26 is a cable insertion hole formed on the rear surface of the seal cap 5. Reference numeral 27 denotes a cable fixing ring that is fitted to the cable M and is made of synthetic resin or the like. At the rear edge thereof, a plurality of elastic members whose front ends extend toward the outer peripheral surface of the cable M at positions equidistantly arranged in the circumferential direction. The claw 28 is integrally formed. These elastic claws 28 are
By forming the slot 29 on the peripheral wall of the fixing ring 27, it can be easily manufactured. Reference numeral 30 denotes a cylindrical rubber bush inserted into the cable M, and when the seal cap 5 is screwed to the case 4, the taper surface of the cable insertion opening 23 of the case 4 and the inner surface of the fixing ring 27 are provided. It is being pressed against and.

In the case 4, a cable pressure contact block 31 shown in FIGS. 2a and 2b is held. The pressure contact block 31 will be described in detail below.

In FIGS. 4 to 6, reference numeral 32 denotes a base formed of an electrically insulating synthetic resin or the like.
Side wall portions 33 (33A, 33B), 34 (34A, 34B) and intermediate partition wall 35
(35A, 35B) are integrally formed. Reference numeral 36 (36A, 36B) is a cover for cable pressure welding which is formed of an electrically insulating synthetic resin or the like and is fitted to the upper side and the lower side of the base 32, and the upper wall is fitted to the central partition wall 35. A matching rectangular hole 37 is formed, and insertion / holding windows 38 for the cable M are formed. Reference numeral 39 is a cable abutting portion formed on the cover 36.

A space 40 (40A, 40A) is formed between the side wall portion 33 and the central wall 35.
B) and the space 41 (41) between the side wall portion 34 and the central wall 35.
A pair of electrically conductive cable connection structures 42 and 42 (the lower side of the base 32 is omitted for simplification of the drawing) are fitted to A and 41B). Both of these structures 4
Reference numerals 2 and 42 are each processed from a conductive plate 43 as shown in FIG. 7, and can be inserted into and removed from the connection terminal 15b on the side of the connector body 2 by molding the front end portion of each into a curled shape. A contact portion 44 to be fitted in is formed. In addition, the curved line l1, which is formed on the conductive plate 43,
The first slot portion 45 and the second slot portion 4 are formed by a pair of substantially U-shaped cut and raised pieces bent at l3.
6 is formed. That is, these slot parts 45,
46 is for the cable M inserted in the cover 36,
The covers 36 and 32 are set so as to bite in the radial direction and come into contact with the core Ma in a fitted state. 47, 48
Are concave portions and convex portions formed on the contact portion 44 and positioned for the connection terminal 15b side.

Next, a procedure for assembling the cable connecting device having the above configuration will be described.

As shown in FIGS. 2a and 3a, the cable M is sequentially inserted through the seal cap 5, the cable fixing ring 27, the rubber bush 30 and the tubular case 4, and then the window portion 38 in the cover 36 of the cable pressure contact block 31.
The tip is set to a position where the tip comes into contact with the cable abutting portion 39. In this state, the cable pressure contact block 31
When the cover 36 is fitted to the base 32, the slot portions 45 and 46 of the cable connecting structure 42 bite in the radial direction of the cable M and come into contact with the core Ma as shown in FIG. In this state, if the contact portion 44 of the cable connection structure 42 is inserted into the connector terminal 15b on the connector body 2 side, the cable M is electrically connected to the connector body 2 side via the cable connection structure 42. become.

Then, the cylindrical case 4 is fitted into the rear end portion 2b of the connector body 2 as shown in FIG. 2b, and is operated to fit in the annular recess 21 of the inner peripheral surface of the case 4 in the substantially C-shaped spring on the connector body 2 side. Since 17 is elastically engaged, the connector body 2 and the case 4 are coupled. At this time,
Since the cable press contact block 31 is fitted in the case 4, the fitting between the base 32 and the cover 36 is firmly held.

Further, the rubber bush 30 is brought into contact with the tapered surface of the case insertion opening 23 of the case 4, the fixing ring 27 is externally fitted to the rubber bush 30, and the screw portion 25 of the seal cap 5 is attached.
3 is screwed into the threaded portion 24 of the case 4, the rubber bush 30 is pressed into the opening 23 and fixed together with the fixing ring 27, as shown in FIG. 3b.

Here, the connection terminal 1 of the cable M and the connector body 2
Since the connection with the cable 5a is performed by using the cable pressure contact block 31 having the cable connection structure 42, the connection is simplified. That is, only by holding the cable M by the cover 36 of the pressure contact block 31 and fitting it into the base 32, the slot portions 45 and 46 of the cable connection structure 42 come into contact with the core wire Ma of the cable M, and further the cable connection structure. Four
When the second contact portion 42a is inserted into the connection terminal 15a of the connector body 2, the cable M is electrically connected to the connection terminal 15a.

As a result, it is possible to easily select a cable having an arbitrary length as compared with a cable M and a connector in which a connecting portion is resin-molded. In other words, after the cable M having a required length is laid around at the wiring site, the cable M and the contactor main body 2 can be connected, which facilitates the wiring work at the site.
Moreover, since the pressing block 31 and the connection terminal 15b only need to be inserted, it is possible to speed up the wiring work as compared with the case where the connection is made by soldering.

In the above example, the cable M is pressed and held on the upper side and the lower side of the base 32 of the cable pressing block 31, respectively, but it may be on either side. The cable connection structure 42 in FIG.
If one slot portion 45 (46) is provided, various modified structures can be adopted.

[Brief description of drawings]

FIG. 1 is a plan view showing an example of a cable connecting device according to the present invention, and FIGS. 2a and 2b show the structure of the connector body and the case side of the cable connecting device before and after assembly, respectively. Partially broken plan view,
FIGS. 3a and 3b are partially cutaway plan views showing the configuration of the connector body and the seal cap side of the cable connecting device before and after assembly, respectively.
FIG. 4 is a side view showing a cable pressure welding block in the same cable connecting device with a cover removed, and FIGS. 5a and 5b are the cable pressure welding block, respectively.
FIG. 6 is a plan view and a side sectional view showing a state in which a cover is removed, FIG. 6 is an exploded perspective view of a part of the cable pressure welding block, and FIG. 7 is a plan view showing a processed product of the cable pressure welding block before forming a cable connection structure. FIG. 8 is a view showing a contact state of a slot portion of the cable connecting structure with a cable core wire, and FIG. 9 is a plan view showing an example of a conventional cable connecting device. 2 ... Connector body, 4 ... Case, 15b ... Connection terminal, 2
3 ... Opening, 31 ... Cable pressure welding block, 32 ... Base, 36 (36A, 36B) ... Cover, 42 ... Cable connecting structure, 44 ... Contact portion, 45, 46 ... Slot portion, M ... Cable, Ma ... Core wire.

Claims (1)

[Scope of utility model registration request] 1. A connector main body having a rear end surface on which a connecting terminal electrically connected to a core wire of the cable is projected, and a tubular shape attached to the rear outer peripheral surface of the connector main body so that the cable can be inserted through a rear end opening. And a cable press contact block held in the case, the cable press contact block, an electrically insulating base, an electrically insulating cover fitted to the base, the base and the cover. Consisting of a conductive cable connection structure installed between
The cable connection structure has a contact portion that is removably fitted and connected to the connection terminal on the connector main body side, and a base portion that covers the core wire by digging into the cable from the radial direction in the fitted state of the base and the cover. A cable connecting device comprising a U-shaped slot portion.