JPH0737264Y2 - Plug type connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a plug-type connector connected to a jack-type connector.

[Prior Art] A conventional plug-type connector P shown in FIG. 8 has a cylindrical boss 100 having an insulating property, a sleeve-shaped first contact piece 110 provided on the outer periphery of the boss 100, and a boss 100. And a second contact piece 120 provided in the inner space of the. On the other hand, the jack type connector J which is the counterpart of the plug type connector P
Is a recess 200 formed by a circular hole, and a recess 200
The movable contact piece 210 overhanging in the inner space of the above, and the pin-shaped contact piece 220 provided in the inner space of the recessed portion 200. Then, when the boss portion 100 is inserted into the recessed portion 200, the first
The contact piece 110 and the movable contact piece 210 are elastically contacted with each other, and the second contact piece 120 and the pin-shaped contact piece 220 are elastically contacted with each other to establish an electrical conduction state. Such a plug-type connector P and a jack-type connector J are often used as power supply connectors for video cameras. Incidentally, 230 is a switch mechanism formed by a movable contact 211 formed at the tip of the movable contact piece 210 and a corresponding fixed contact 212, and when the boss 100 is not inserted into the recess 200, the fixed contact 212 is virtually The movable contact 211 makes elastic contact like a line to form a closed circuit, and the boss 10
When 0 is inserted, both movable contacts 211 are separated from the fixed contacts 212 as shown by the solid line to form an open circuit.

By the way, in many devices such as video cameras, it is possible to use both a commercial power source and a power source such as a portable or vehicle-mounted battery other than the commercial power source. When each of these power supplies is used, the input voltage to the built-in circuit of the equipment will differ, so in the above equipment, only the thickness of the pin contact piece 220 is different as a measure to prevent adverse effects due to the difference in input voltage. In many cases, two jack-type connectors J having a structure are mounted on the device side.

[Problems to be Solved by the Invention] However, mounting two jack-type connectors J on the device side requires a correspondingly large mounting space, which impedes the recent trend toward compact devices. Not only there is a problem, but there is a problem that it leads to a complicated mounting process and a rise in cost. Mount the plug type connector P on the device side,
It is conceivable to use the jack type connector J on the power source side, but the actual situation is the same even in that case.

The present invention has been made in view of the above problems, and provides a plug-type connector in which only one connector needs to be mounted regardless of whether a jack-type or plug-type connector is mounted on the device side. With the goal.

[Means for Solving the Problems] In the plug-type connector according to the first invention, a boss to be inserted into a recessed portion provided in a jack-type connector that is a counterpart of the plug-type connector is integrated at a predetermined position in the circumferential direction. A first boss portion and a second tubular portion of different sizes, which are connected to each other
A first contact piece corresponding to the movable contact piece of the jack-type connector is provided on at least one of the outer circumferences of the first boss portion and the second boss portion, and the first boss portion or the second boss portion. A second contact piece corresponding to the pin-shaped contact piece of the jack-type connector is provided in at least one of the internal spaces of the boss portion, and the contour shape of the boss corresponds to the contour shape of the recessed portion of the jack-type connector, and the recessed portion thereof is provided. The insertion posture of the boss with respect to is regulated.

In the present invention, when the first contact piece is provided on only one of the first boss portion and the second boss portion, the first contact piece is provided on both the first boss portion and the second boss portion. When the second contact piece is provided only on either the first boss portion or the second boss portion, the second contact piece is provided on both the first boss portion and the second boss portion. Including the case.

A second aspect of the plug-type connector is that the first boss portion and the second boss portion are cylindrical, the first boss portion has a diameter larger than that of the second boss portion, and the first contact piece is It is provided only on the outer periphery of the one boss portion, and the second contact piece is provided only on the inner space of the second boss portion.

[Operation] In the first invention, in the case where the first contact piece and the second contact piece are provided on both the first boss portion and the second boss portion, respectively, two plug-type connectors having a conventional configuration are used. Demonstrate the function of minutes. Also, each of the first contact piece and the second contact piece is the first
When provided on only one of the boss portion and the second boss portion, the function equivalent to that of the plug-type connector having the conventional configuration is exhibited. In either case, since the insertion position of the first boss portion or the second boss portion with respect to the recessed portion of the mating jack-type connector is determined by the localization value,
The first contact piece and the second contact piece provided on the boss portion and the second boss portion are reliably connected to the movable contact piece and the pin-shaped contact piece of the jack type connector corresponding to them.

In the second invention, not only the same function as that of the plug-type connector having the conventional configuration is exhibited, but also the plug-type connector having the conventional configuration can be used for the jack-type connector which is the other party. Further, the insertion position of the first boss portion or the second boss portion with respect to the recessed portion of the jack type connector is set to the localization value.

[Embodiment] FIG. 1 is a vertical sectional view showing a plug-type connector P according to an embodiment of the present invention, FIG. 2 is a side view of the connector P, and FIG. 3 is a front view of the connector P.

In FIGS. 1 to 3, reference numeral 1 denotes a boss formed of an insulating resin, which has a large-diameter cylindrical first boss portion 11 and a small-diameter cylindrical second boss portion 12 that form a connecting portion 13. The first boss portion 11 and the second boss portion 12 are substantially in contact with each other. Further, a metal sleeve-shaped first contact piece 21 inserted at the time of molding the boss 1 is provided on the outer periphery of the first boss portion 11. A second metal contact piece 22 is provided in the internal space of the second boss portion 12. The second contact piece 22 is formed by bending a thin metal plate into a substantially cylindrical shape, and has a contact 23 bulged inward and a terminal portion 24 extended rearward of the second boss portion 12. is doing.

Electric wires 31, 32 of the power cord 3 are separately soldered to the rear end of the first contact piece 21 and the terminal portion 24 of the second contact piece 22, respectively.

The inner space of the second boss portion 12 is closed by a plug 25 at its rear end portion. And the second half of the boss 1 and each contact piece 1
The electric wires 31 and 32 to which the wires 2 and 13 are connected and the tip of the cord 3 are held by the resin mold layer 41. This resin mold layer
The lock nut 5 is fitted to the shaft 41 so as to be slidable in the axial direction, and a retaining collar 42 for the lock nut 5 is integrally provided at the tip of the resin mold layer 41. Further, the resin mold layer 41 is covered with an outer layer 44 which functions as a handle, and the outer layer 44 is provided with a flexible portion 45 having a predetermined width for preventing disconnection of the cord 3.

Next, the structure of the jack-type connector J, which is the counterpart of the plug-type connector P, will be described with reference to FIGS.

The jack type connector J has a body 6 having a concave portion 7 into which the boss 1 is inserted and a screw portion 8 into which the lock nut 5 is screwed. The recessed portion 7 is provided with a large-diameter first hole portion 71 and a small-diameter second hole portion 72, which are communicated with each other at a predetermined position in the circumferential direction, and these hole portions 71, 72 have a small-diameter second portion. Hole 7
They are communicated with each other through a narrow hole portion 73 having the same width dimension as the second diameter dimension.

A hollow portion 74 continuous with the first hole portion 71 is formed on the outer side portion of the first hole portion 71, and the V-shaped bent portion of the movable contact piece 91 disposed in the hollow portion 74 is the first hole. The portion 71 projects inside in the radial direction. The bent portion of the movable contact piece 91 has a movable contact 92 at the top thereof.

In addition, the inner space of the first hole portion 71 has a large diameter first pin-shaped contact piece.
93 is provided, and a second pin-shaped contact piece 94 having a small diameter is provided in the internal space of the second hole 72.

Furthermore, a fixed contact piece is provided at the boundary between the first hole portion 71 and the hollow portion 74.
95 is provided, and the fixed contact 96 of the fixed contact piece 95 and the movable contact 97 formed on the inclined portion of the movable contact piece 91 correspond to each other.

The movable contact piece 91, the first pin-type contact piece 93, the second pin-type contact piece
The terminals provided on 94 and the fixed armature 95 are the terminal groups.
It is projected on the same side of the body 6 as 98. 98
Is a mounting plate portion, which is mounted on the device side, for example.

In the above, the contour shape of the boss 1 of the plug-type connector P and the contour shape of the recessed portion 7 of the jack-type connector J are shapes corresponding to each other, as is clear from comparison between FIGS. 3 and 6. That is, the first boss portion 11 of the boss 1
And the inner diameter of the first hole 71 in the recess 7 correspond to each other, and the outer diameter of the second boss 12 in the boss 1 and the inner diameter of the second hole 72 in the recess 7 correspond to each other. And the outer diameter of the first boss 11 is the first.
It is smaller than the inner peripheral diameter dimension of the hole portion 71 and larger than the inner peripheral diameter dimension of the second hole portion 72, and also the second boss portion 12
Is smaller than the inner diameter of the second hole 72.

FIG. 7 is a vertical cross-sectional view when the above-mentioned plug-type connector P and jack-type connector J are connected. As shown in the figure, in the connected state, the first boss portion 11 is inserted into the first hole portion 71, the first pin-shaped contact piece 93 is inserted into the inside of the first boss portion 11, and the second boss portion 12 is The second pin-shaped contact piece 94 is inserted into the second hole portion 72, and the second pin-shaped contact piece 94 is inserted into the inside of the second boss portion 12. And
The first contact piece 21 retreats the movable contact piece 91 outward against the spring force to separate the movable contact 97 from the fixed contact 96, and the reaction force of the movable contact piece 91 due to the retreat of the movable contact piece 91. Then, the movable contact 92 elastically contacts the first contact piece 21. Also, the second pin type contact piece 72
The contact point 23 of the second contact piece 22 elastically contacts with.

Since the contour shape of the boss 1 of the plug type connector P and the contour shape of the recessed portion 7 of the jack type connector J are in the above-described corresponding relationship, both connectors P and J when the boss 1 is inserted into the recessed portion 7 are formed. 7 is limited to that shown in FIG. 7, and it is possible that the second boss portion 12 is inserted into the first hole portion 71 or the first boss portion 11 is inserted into the second hole portion 72. Absent. Therefore, the connection relationship between the contacts described above is also limited as described above.

If the diameter of the first boss portion 11 is the same as that of the conventional example described with reference to FIG.
Insert the conventional boss 100 into the first hole 71 of
The second contact piece 120, the first pin type contact piece 93, and the first contact piece 1 of the conventional example
10 and the movable contact 92 of the movable contact 91 can be connected to each other, and by doing so, two types of plug-type connectors P can be connected to one jack-type connector J. become. That is, the seventh
When the plug-type connector P of the embodiment is connected as shown in the figure, the movable contact piece 91 of the jack-type connector J and the second pin-shape contact piece 72 are provided for electrical conduction, and the plug-type connector P of the conventional example is provided. , The movable contact piece 91 of the jack type connector J and the first pin-shaped contact piece 72 are electrically connected. Therefore, the movable contact piece 91 is used as both the plug-type connector P of the embodiment and the plug-type connector P of the conventional example. The advantage that such a movable contact piece 91 can be used for both plug-type connectors P is that the contour shape of the recessed portion 7 of the jack-type connector J and the contour of the boss 1 of the plug-type connector P according to the embodiment of the present invention. It can be obtained only by adjusting the shape, and if the second hole 72 is the first
If it is formed to have the same size as the hole portion 71, the boss 100 of the conventional example can be inserted into the second hole portion, so that the second pin-shaped contact piece 72 is applied to the first pin-shaped contact piece 71. It is not preferable because a voltage equivalent to the voltage may be applied.

As described above, when the jack type connector J is mounted on the device side, the conventional plug type connector P is used as a power source connector using a commercial power source, and the plug type connector P of the present invention is used as, for example, a portable battery connector. It turns out that it can be used as. In the connection structure of FIG. 7, by screwing the lock nut 5 into the screw portion 62 and tightening the screw nut 62, the end face of the body 6 and the end face of the resin mold layer 41 are in close contact with each other, and water droplets such as splashes do not easily enter inside. Become a structure. Therefore, when the plug-type connector P of the embodiment of the present invention is used as a portable battery connector as described above, the risk of short-circuiting due to water infiltration is extremely reduced even when it is used outdoors such as at the beach.

In the embodiment, the first contact piece 21 is provided only on the first boss portion 11,
Although the second contact piece 22 is provided only on the second boss portion 12, the first contact piece is provided only on the second boss portion, and the second contact piece is provided only on the first boss portion. Or the first contact piece first
Those provided on both the boss portion and the second boss portion and those provided with the second contact piece on both the first boss portion and the second boss portion are also included in the scope of the present invention. Since the latter two have a function of combining two conventional plug-type connectors with one plug-type connector, the miniaturization of the plug-type connector is achieved accordingly. Therefore, if such a plug-type connector is mounted on a device, the mounting space is small.

[Effect of Device] The plug-type connector of the present invention has the following effects.

That is, according to the first invention, one plug-type connector exerts the function corresponding to the two plug-type connectors of the conventional configuration, so that miniaturization of the plug-type connector itself is promoted and In the case of mounting on a device, the mounting space of the connector in the power supply type device is smaller than that of the conventional device, and the device can be made compact accordingly. Nevertheless, the shape of the recessed portion of the mating jack-type connector is limited by the contour shape of the boss of the plug-type connector, and the insertion posture of the boss with respect to the recessed portion is restricted, and the first boss portion and the second boss portion are restricted. It is possible to prevent erroneous connection between the first contact piece or the second contact piece provided on the first contact piece and the movable contact piece or the pin-shaped contact piece of the jack type connector.

According to the second invention, the movable contact piece of the other jack type connector can be used for both the plug type connector of the present invention and the conventional plug type connector, and the number of parts of the jack type connector is accordingly increased. There is an effect that can be reduced.

[Brief description of drawings]

1 is a longitudinal sectional view showing a plug type connector according to an embodiment of the present invention, FIG. 2 is a side view of the same connector, FIG. 3 is a front view of the same connector, and FIG. 4 is a counterpart of the above plug type connector. Fig. 5 is a vertical sectional view of a jack type connector, Fig. 5 is a side view of the same connector, Fig. 6 is a front view of the same connector, and Fig. 7 is a vertical sectional view of the case where a plug type connector and a jack type connector are connected. FIG. 8 is a sectional view of a conventional example in use. P ... Plug type connector, J ... Jack type connector, 1 ...
Boss, 7 ... Recessed portion, 11 ... First boss portion, 12 ... Second boss portion,
21 ... 1st contact piece, 22 ... 2nd contact piece, 91 ... Movable contact piece, 93 ... 1st
Pin contact piece, 94 ... Second pin contact piece.

Claims (2)

[Scope of utility model registration request] 1. A boss to be inserted into a recess provided in a jack-type connector that is a counterpart of the plug-type connector, and a first contact piece provided on the outer periphery of the boss is extended to the recess. In the plug-type connector corresponding to the movable contact piece, the second contact piece provided inside the boss corresponds to the pin-shaped contact piece provided in the internal space of the recessed portion, the boss having a circumferential direction. It is provided with a cylindrical first boss portion and a second boss portion of different sizes that are integrally connected at a predetermined location, and is a jack type on at least one of the outer periphery of the first boss portion or the second boss portion. First corresponding to the movable contact piece of the connector
A contact piece is provided, and a second contact piece corresponding to the pin-shaped contact piece of the jack type connector is provided in at least one of the internal spaces of the first boss portion and the second boss portion, and the outline shape of the boss is the jack type connector. A plug-type connector characterized in that it is configured so as to conform to the contour shape of the recessed portion and regulate the insertion posture of the boss with respect to the recessed portion. 2. The first boss portion and the second boss portion are cylindrical, the first boss portion has a larger diameter than the second boss portion, and the first contact piece is provided only on the outer circumference of the first boss portion. The plug-type connector according to claim 1, wherein the second contact piece is provided only in the internal space of the second boss portion.