JPH024458Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a plug used for connecting circuits of various electronic devices.

[Prior Art] FIG. 7 is a side view showing a conventional example of this type of plug. This plug consists of a center conductor 1, an outer conductor 2, and an insulator 3 interposed between these conductors 1 and 2, and a contact portion 4 that is inserted into a jack (not shown). 2 of the cable 7 to the two connection terminals 5 and 6 led from each conductor 1 and 2.
The conductive wires 8 and 9 are connected by soldering.

Further, a threaded portion 10 is formed at the base end of the contact portion 4, and a cylindrical case 11a that covers the connecting portions of the connection terminals 5, 6 and the conductive wires 8, 9 is attached to this threaded portion 10. It's getting old. The cylindrical case 11a constitutes a grip portion 11 for inserting the plug.

[Problems to be solved by the invention] However, in the above-mentioned conventional technology, the connection terminals 5 and 6 on the plug side and the conductors 8 and 8 of the cable 7,
9 by soldering, there was a problem that the connection work was complicated.

Furthermore, instead of soldering, it is also possible to tighten and join the conductors 8 and 9 to the connection terminals 5 and 6 using tightening screws, but this also involves tightening the screws, which is complicated and complicated. , the number of parts due to screws increases, and the space for connection becomes larger, resulting in a problem that the cylindrical case 11a and the contact portion 4 described above become larger.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, it is an object of the present invention to provide a plug that can be easily and quickly connected to a cable and has a simple connection structure.

[Means for Solving the Problems] In other words, in order to achieve the above object, the plug of the present invention has a contact portion attached to a jack, and a plug provided on the base end side of this contact portion to which a cable is connected. a gripping portion, a conductor of the cable is connected to a connection terminal led from a conductor provided at the contacting portion toward the gripping portion, and the outer peripheral portion is attached to the proximal end portion of the contacting portion. In the plug in which the gripping portion is formed by being covered with a cylindrical case, the connecting terminal includes a tip fitting portion that is press-fitted into a connector-type terminal attached to the conductor of the cable, and a tip fitting portion that is press-fitted into the connector-type terminal attached to the conductor of the cable. It is characterized by having a stopper part that protrudes in the width direction at the base end of the terminal and receives the tip edge of the connector-type terminal.

[Operation] By applying the connector type terminal provided on each conductor of the cable to the tip of each connection terminal of the plug and pressing it in the proximal direction, the tip fitting part of the connection terminal is press-fitted into the connector type terminal. Both are placed in a conductive state, and the connector-type terminal is positioned by abutting against the stopper portion of the connecting terminal.

[Embodiment] FIG. 1 is a partially omitted side view showing a plug according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line A--A in FIG. 1.

The plug according to this embodiment is used for communication, for example, and has a center conductor 12 and an outer conductor 13.
, the sleeve 14 , the insulators 15 , 16 , 17 , 18 interposed between them, and the conductors 12 , 1
The contact portion 24 is constructed by coaxially combining the connection terminals 19 and 20 of No. 3 and fixing members 22 and 23 for fixing the conductive piece 21 with each other. Further, as shown in FIG. 3, a cylindrical case 25 is attached to the proximal end side of the contact part 24 to constitute a grip part 26. The connecting terminals 19, 20 and the conductive piece 21 are led out, and as shown in FIG.
are connected to connector-type terminals 30 and 31 provided on each conductor 28 and 29 of the cable 27.

Each component will be explained in detail below.

The center conductor 12 consists of a tip 32 and a shaft 33, and has a threaded portion 33a formed at the tip of the shaft 33.
Screw into the screw hole 32a of the tip 32, and screw into the screw hole 3.
By caulking the tip of the shaft portion 32 protruding on the opposite side of the shaft portion 2a, the screw portion 33a is brought into pressure contact with the screw hole 32a, thereby fixing the two. Furthermore, a flange portion 33a for locking the connection terminal 19 is formed at the base end of the shaft portion 33. Such a center conductor 12 is connected to an outer conductor 13 and a sleeve 1.
4. With the insulators 15, 16, 17, 18 and the fixing members 22, 23 coaxially combined, insert the shaft portion 33 in a skewered manner from the base end side of the shaft portion 3.
3 and the tip portion 32, each component of the contact portion 24 is joined together. In particular, by final caulking of the tip of the shaft portion 33, the respective constituent members are brought into pressure contact with each other and are strongly fixed.

The outer conductor 13 is formed into a cylindrical shape, with a large diameter portion 13a at the tip exposed to the outside. It is connected to the conductive piece 21 by inserting it through the conductive piece 21, caulking the inserted end outward, and bending it into a flange shape.

The sleeve 14 covers the outer periphery of the contact portion 24 on the proximal side, and has a thick threaded portion 14a formed at the proximal end for screwing the cylindrical case 25. Furthermore, an engagement hole 34 for restricting rotation of the fixing member 22 is formed in the proximal end surface of the sleeve 14, as shown in FIG. 5a. Although this embodiment describes an example in which the sleeve 14 is not used as a conductor, it is also possible to provide the sleeve 14 with a connection terminal and configure it as a third conductor.

The insulators 15 and 16 are formed into a cylindrical shape having two large diameter portions, and the insulators 17 and 18 are formed into a simple cylindrical shape. These insulators 15, 16,
17 and 18 are interposed between the conductors 12 and 13 and the sleeve 14, respectively, to restrict them in the radial and axial directions and to insulate them.

The fixing member 22 is formed in a substantially cylindrical shape to be attached to the proximal end surface of the sleeve 14, and has a protrusion 35 formed on the end surface facing the sleeve 14 to fit into and engage with the aforementioned engagement hole 34. Further, on the end surface of the fixing member 22 opposite to the sleeve 14, as shown in FIG.
is formed, that is, this fitting recess 36
is the ring portion 21a of the conductive piece 21 shown in FIG. 5c.
and the fixing member 23 shown in FIG. 5d are formed to have different diameter shapes into which the fixing member 23 shown in FIG. 5d can be fitted while being restricted in the rotation direction. The fixing member 23 also has a locking recess 23a that restricts the ring portion 19a provided at the base end of one of the connection terminals 19 in the rotational direction as shown in FIG. 5e.
is formed. Then, the ring portion 21a of the conductor 21, the fixing member 23, and the ring portion 19a of the connecting terminal 19 are inserted into the fitting recess 36 of the fixing member 22 in this order, and the tip portion 32 of the center conductor 12 described above
By coupling the shaft portion 33 to the shaft portion 33, the shaft portion 33 is fixed in a polymer structure. As a result, each conductor 12,1
3 and the connecting terminals 19, 20, etc., are assembled while being restricted in the rotational direction as a whole. For example, the connecting terminals 19, 20 and the terminal 3 on the cable 27 side
It is possible to prevent twisting with 0.0, 31, etc., and maintain stable characteristics. Note that each of the fixing members 22 and 23 is made of an insulating material such as synthetic resin, and fixes the connecting terminal 19 and the conductive piece 21 in an insulated state.

Further, among the respective connection terminals 19 and 20, one connection terminal 19 is directly connected to the center conductor 12, and the other connection terminal 20 is attached by a rivet 37 to the middle part of the conductor 21 connected to the outer conductor 13. It is being Each of the connection terminals 19 and 20 is formed into a tongue shape having substantially the same shape as each other, and has tip fitting portions 19b and 20b that are press-fitted into the connector type terminals 30 and 31 on the cable 27 side, and a tip fitting portion 19b and 20b that are inserted into the connector type terminals 30 and 31 on the cable 27 side. Part 19
stopper portions 19c and 20c protruding in the width direction at the proximal ends of b and 20b.

As shown in FIG. 3, the connector type terminals 30, 31 have neck portions 30a, 31a that grip the conductors 28, 29 of the cable 27 on the proximal end side, and have the ends of the connecting terminals 19, 20 at the ends thereof. Press-fitting portion 30 into which the fitting portions 19b and 20b are press-fitted
b, 31b are formed in this press-fitting part 30.
b, 31b have a shape in which the clamping pieces 38a, 38b on both sides are folded inward into a curled shape, and are designed to elastically clamp the respective tip end fitting parts 19b, 20b. Further, an engaging protrusion 39 is integrally provided at the center of the press-fit portions 30b, 31b.

Tip fitting parts 19b, 20 of connection terminals 19, 20
b has a width corresponding to the connector-type terminals 30 and 31, and its tip edge is formed sharply to facilitate press-fitting. In addition, the tip fitting part 19
An engagement hole 40 into which the aforementioned engagement protrusion 39 fits is formed in the center of b, 20b to prevent it from coming off after press-fitting.

Moreover, the stopper parts 19c, 20c are press-fit parts 30b, 3 attached to the tip fitting parts 19b, 20b.
It is designed to receive the tip edge of 1b.
Thereby, the insertion positions of the connector-type terminals 30 and 31 are determined, and the aforementioned engagement protrusion 39 and engagement hole 40 can be easily aligned. Also, by determining the positions of the connector terminals 30 and 31 in this way, the conductors 28 and 2 from the cable 27 are
The length of the lead wires 9 can be determined in advance, and the conductive wires 28 and 29 can be easily stretched in an appropriate state within the cylindrical case 25.

Further, the conductive piece 21 has claw pieces 41a and 41b that clamp and fix the cable 27 at its base end. This mechanically couples cable 27 to the plug.

According to the above configuration, the electrical connection work between the plug and the cable 27 can be completed only by press-fitting and inserting the connection terminals 19 and 20 on the plug side and the connector type terminals 30 and 31 on the cable 27 side. This makes it possible to significantly improve workability compared to methods such as soldering or screwing.

In the above embodiment, the connector type terminal 30 has curled holding pieces 38a and 38b on both sides.
31 has been described, the present invention is not limited to this, and may be, for example, a configuration in which a connector type terminal having a simple flat cylindrical press-fit portion is connected.

[Effects of the invention] As explained above, according to the invention, the connection work between the connecting terminal of the plug and the connector type terminal of the cable can be completed by simply inserting the connection terminal of the cable into pressure contact, which makes the work easier and easier. Speed can be achieved and a simple connection structure can be obtained.

Furthermore, since the connector-type terminal is positioned by the stopper portion of the connection terminal, it becomes easy to place the conductor of the cable in an appropriate tensioned state.

[Brief explanation of the drawing]

Fig. 1 is a partially omitted side view of a plug showing an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1,
Fig. 3 is an exploded perspective view showing the components of the plug, Fig. 4 is a perspective view showing the state in which the connector type terminal of the cable is connected to the connection terminal of the plug, and Fig. 5 a.
5 to 5e are diagrams illustrating the end surface shapes of some constituent members of the plug, FIG. 5a is a front view of the sleeve, FIG. 5b is a front view of the first fixing member, and FIG. FIG. 5 d is a front view of the second fixing member, FIG. 5 e is a front view of one connecting terminal,
FIG. 6 is a sectional view showing a connector-type terminal connected to a plug, and FIG. 7 is a side view showing an example of a conventional plug. 12...center conductor, 13...outer conductor, 19,
20... Connection terminal, 19b, 20b... Tip fitting part, 19c, 20c... Stopper part, 24... Contact part, 25... Cylindrical shape, 26... Gripping part, 27...
...Cable, 28, 29... Conductor, 30, 31...
...Connector type terminal.

Claims (1)

[Claims for Utility Model Registration] It has a contact part that is attached to a jack, and a grip part that is provided on the proximal end side of this contact part and to which a cable is connected, and that can be gripped from a conductor provided in the contact part. In the plug, the holding part is formed by connecting the conductor of the cable to the connecting terminal led to the side of the contact part, and covering the outer peripheral part with a cylindrical case attached to the base end part of the contact part, The connection terminal includes a distal end fitting portion which is press-fitted into a connector type terminal attached to the conductor of the cable, a distal end fitting portion protruding from the base end of the distal end fitting portion in the width direction, and a distal end edge of the connector type terminal. A plug characterized in that it has a stopper portion for receiving the plug.