JPH0554927A - Electric connection device - Google Patents

Abstract

PURPOSE:To provide an electric connection device equipped with a removal protective function with which a standard type plug can be used by providing a locking means connected with a feed pole and penetrating a hole formed in a receiving pole when it is in contact with it for energization for stopping the receiving pole. CONSTITUTION:A lock lever 6 is positioned at an upper end, and a receiving pole 2 of a plug 1 is inserted into a pole insertion port 4 of a receptacle 3 to make energization possible. When the lock lever 6 is pulled down in a direction D at this time, a lock metal 9 penetrates a hole in a contact 8 of a feed pole 7, and a round hole 5 in the receiving pole 2 through a connection mechanism to let its forward end supported and fixed at a receiving metal 11. In this constitution, a removal protective function can be provided using the standard plug 1, thereby removal of the plug 1 can be prevented securely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical connecting device comprising an outlet and a plug, and more particularly to a mechanism for preventing the plug from falling off.

[0002]

2. Description of the Related Art FIG. 4 is a perspective view showing an electric connecting device having a conventional drop-out preventing mechanism. In the figure, 1 is a plug for supplying power to a device which is a load, and 2 is a receiving electrode incorporated in the plug 1, which is electrically connected to an input terminal of the device through an insulated wire. 3 is an outlet for supplying power to the plug 1, 4 is this outlet 3
Although not shown in the figure, the electrode insertion port formed in the inside of the electrode insertion electrode 4 has a built-in feed electrode which makes electric contact with the receiving electrode 2 inside the electrode insertion port 4.

Next, the operation will be described. Now, as shown in FIG. 4, when attempting to connect the plug 1 and the outlet 3 separately from each other, first move the receiving electrode 2 of the plug 1 in the direction A in the figure to insert the pole of the outlet 3 into the pole. Insert in mouth 4. As a result, the power supply electrode and the reception electrode 2 in the outlet 3 are brought into electrical contact with each other to supply power. Then, when the plug 1 is further rotated in the direction of B in this state from this state, the end portion formed in the L shape at the tip of the receiving electrode 2 is provided at the engaging portion inside the outlet 3 corresponding to this. To prevent the plug 1 from moving in the reverse A direction. That is, the plug 1 is prevented from falling off.

[0004]

Since the conventional electrical connecting device is constructed as described above, in order to ensure the function of preventing the plug from falling off, a standard type plug which is widely and commonly used on the market is commonly used. There was a problem in that the device could not be used and the device including the plug was special and large. The present invention has been made to solve the above problems, a standard type plug can be used,
Moreover, it is an object of the present invention to obtain an electrical connecting device having the function of preventing the falling.

[0005]

According to a first aspect of the present invention, there is provided an electric connecting device, which is connected to a power supply electrode and which penetrates a hole formed in a receiving electrode to lock the receiving electrode when energized. It is provided with a locking device that prevents the plug from falling off.

In the electric connecting device according to the second aspect of the invention, a pair of projecting contact elements capable of sandwiching the receiving electrode by the pressing force of the spring's accumulating force are formed on the supply electrode.
The contact is fitted in a hole formed in the receiving electrode to prevent the plug from falling off.

[0007]

Operation: The receiving electrode of the plug is inserted into contact with the supply electrode of the outlet, and then the locking device is operated to penetrate the hole of the receiving electrode. This reliably prevents the plug from falling off.

Further, in a device provided with a predetermined pair of contacts, when the receiving electrode is inserted and brought into contact with the feed electrode, both contacts fit into the holes of the receiving electrode to lock the receiving electrode, and the plug is Does not fall off easily.

[0009]

1 is a perspective view showing an electric connecting device according to a first embodiment of the present invention. Here, as the plug 1, including the receiving electrode 2, a plug having a standard structure generally widely marketed and commonly used is applied. Reference numeral 5 is a round hole formed in the vicinity of the tip of the receiving electrode 2 as a standard. The pole insertion port 4 on the side of the outlet 3 is also formed in a standard linear shape. Reference numeral 6 is a lock lever for operating a lock device described later.

FIG. 2 is a view seen from the section CC of FIG. 1 for explaining the structure and operation of the lock device. In the figure, 7 is a feed electrode mounted inside the outlet 3, and 8
Is a contact formed in a protrusion shape on the inner side of the center of the supply electrode 7, and a hole through which a lock fitting described later is inserted is formed at the tip of the protrusion. The lock fitting 9 is attached to the feed electrode 7 via a leaf spring 10. Reference numeral 11 is a receiving metal fitting for fixing the lock metal fitting 9 penetrating the contactor 8.

Next, the operation will be described. First, as shown in FIG. 1, the lock lever 6 is set at the upper end position, and in this state, the plug 1 is moved in the direction of A in the figure to insert the receiving electrode 2 into the pole insertion port 4 of the outlet 3. The lock lever 6 and the lock fitting 9 are connected by a coupling mechanism (not shown), and when the lock lever 6 is at its upper end position, the lock fitting 9 is at the position shown in FIG. 2 (1). Then, when the plug 1 is pushed further in the direction of A, the contacts 8 of the feed electrode 7 come into contact with each other so as to sandwich the receiving electrode 2 of the plug 1 and the state becomes energizable (Fig. 2 (2 )).

Here, as shown in FIG. 1, when the lock lever 6 is operated and pulled down in the direction D, the lock fitting 9 is moved in the direction E shown in FIG. 2B through the above-mentioned connecting mechanism. The tip of the lead-through contactor 8 is passed through the hole of the contactor 8, the round hole 5 of the receiving electrode 2, and the hole of the contactor 8 to be fixedly supported by the receiving metal fitting 11 (FIG. 2C). This ensures that the plug 1 is prevented from falling off. When the plug 1 is to be removed, first, the lock device is released, that is, when the lock lever 6 is pulled up to the upper end position, the lock metal fitting 9 is retracted to the left (FIG. 2 (2)), and the plug 1 is freed. Then, it is ready to be pulled out from the outlet 3. In FIG. 1, the lock lever 6 is shown as a slide type in which it is operated in the vertical direction, but it may be a slide type in which it is operated in the horizontal direction or a push method. Further, the leaf spring 10 may be a coiled spring.

FIG. 3 is a sectional view showing an electrical connecting device according to a second embodiment of the present invention. In this structure, a spring 12 is provided, and the stored force urges the pair of feed electrodes 7 inward. Further, as shown in FIG. 3, the contactor 8 provided at the center of the supply electrode 7 is formed such that the upper half thereof is substantially horizontal and the lower half thereof has a predetermined inclination. Therefore, in the state where the plug 1 and the outlet 3 are separated, the pair of contacts 8 are in contact with each other, and when the receiving electrode 2 is inserted from the pole insertion port 4 in this state, the tip of the receiving electrode 2 is The lower half of the contactor 8 is spread out so that the feeding electrode 7 holds the receiving electrode 2 from both sides, so that the two can be electrically contacted. When the plug 1 is inserted to a predetermined position, the tip position of the contactor 8 coincides with the position of the round hole 5 of the receiving electrode 2, and the contactor 8 is fitted into the round hole 5 and is automatically locked.
Since the upper half of the contactor 8 is formed substantially horizontally, it does not easily fall off. To release the lock mechanism, a trip lever (not shown) in place of the lock lever 6 is used to overcome the stored force of the spring 12 and separate the contactor 8.

[0014]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, it is possible to use a general standard plug to provide the function of preventing it from falling off, and the device is also small and inexpensive.

[Brief description of drawings]

FIG. 1 is a perspective view showing an electrical connection device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line CC of FIG.

FIG. 3 is a sectional view showing an electric connecting device according to Embodiment 2 of the present invention.

FIG. 4 is a perspective view showing a conventional electrical connection device.

[Explanation of symbols]

 1 Plug 2 Receiving Electrode 3 Outlet 5 Round Hole as Hole 6 Lock Lever 7 Supply Electrode 8 Contact 9 Lock Metal Fitting 11 Receiving Metal 12 Spring

Claims (2)

[Claims] 1. An electrical connecting device for inserting and contacting a receiving electrode of a plug with a supply electrode of an outlet to make a current contact between both electrodes, wherein the connection electrode is connected to the power supply electrode and is formed on the reception electrode at the time of current contact. An electrical connection device comprising a lock device that penetrates through a hole and locks the receiving electrode to prevent the plug from falling off. 2. An electrical connecting device for inserting and contacting a receiving electrode of a plug into a power supplying electrode of an outlet to make a current contact between the two electrodes, wherein the receiving electrode is connected to the supplying electrode with a pressing force of a spring energy. A pair of projecting contact elements that can be held are formed, and the contact elements are fitted into the holes formed in the receiving electrode to prevent the plug from coming off when energized. Electrical connection device.