JPS6226777A - Magnet type plug - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a magnetic plug.

[Background technology]

A magnetic plug generally includes a container with two conductive holes, and a contact is provided at the back of each conductive hole. The tip of a contact rod (socket pin) of a connecting device or electrical appliance inserted through the conductive hole is applied to this contact point. A permanent magnet having suction plates on both sides is provided inside the container with the ends of the suction plates protruding outward from the conductive hole installation surface. A magnetic plug attracts the end of the suction plate to an iron piece provided at the connection part of a connecting device or electrical appliance, and uses the adhesion force to bring the contact point into contact with the contact rod provided at the connection part to generate electricity. It is designed to connect to.

With conventional magnetic plugs, when vibration or shock is applied to the container while it is connected to the connection part of a load device, the suction plate moves together with the container, so the angle between the tip of the suction plate and the iron piece of the connection part is There is a problem in that the suction plate shifts and a gap is created between the two, and as a result, the suction force of the suction plate becomes weak, and the suction plate often easily falls out of the connecting part. Additionally, when used on a table, etc., if a downward force is applied to the container due to a falling object, etc., the sensitivity of the tip surface of the suction plate and the iron piece at the connection part will shift, creating a gap between the two. There was also a problem in that the suction force of the suction plate became weak, and even if the unplugged material did not fall out of the connection part, the connection with the connection part was incomplete, which often caused a rise in the temperature of the connection part.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a magnetic plug with high plug holding performance by a suction plate.

[Disclosure of the invention]

In order to achieve the above object, the present invention includes a container provided with a conductive hole, and a contact is provided at the back of the conductive hole to which the tip of a contact rod inserted through the conductive hole is applied. This is a magnetic plug that is installed inside a container with a permanent magnet having a suction plate on the side with the ends of both suction plates protruding outward from the conductive hole installation surface, and a permanent magnet is installed in the container with the ends of both suction plates protruding outward from the conductive hole installation surface. The gist of the plug is a magnetic plug that is characterized by the ability to change the angle along which it runs.

The present invention will be explained in detail below.

1 and 2 show a magnetic plug according to the present invention. As shown in the figure, this magnetic plug has a container 3 made up of a body 1 and a cover 2 that are fitted together. The body 1 and cover 2 are fixed to each other with assembly screws 4 and nuts 5. Conductive holes 6a and 6b are provided on both sides of the front surface of the container 3, and holes are also provided inside both conductive holes 6a and 6b. a and 7b are provided. A room 8 is provided inside the container 3, and the holes 7a and 7b are provided in the room 8.
connected to the front end of the

In the figure, 9 is a permanent magnet (magnet) and 10a.

10b is a suction plate, and the permanent magnet 9 has suction plates 10a and 10b fixed on both left and right sides to form a permanent magnet block (magnet block), and both suction plates 10a,
Make sure that the tip of 10b protrudes from the holes 7a and 7b,
It is stored in Room 8. Room 8 and holes 7a, 7b
The length from the bottom end to the top end is the permanent magnet 9 and the attraction plate 1.
A margin is provided so that the height is slightly longer than that of 0a and 10b. U-shaped notches 11 are provided at the upper and lower rear portions of the suction plates 10a and 10b.
The widths of a and 10b are narrower at the rear from the notch 11 than at the front. A chevron 12 is provided at the rear end of the suction plates 10a, 10b, and an R is provided at the top 12a of the chevron 12. The chevron-shaped top portion 12a is placed against the rear end wall surface of the room 8. Protrusions 13 are provided at the four rear corners of the room 8, and these protrusions 13 fit into the notches 1 of the suction plate.
It is inserted in 1. The protrusion 13 is rounded at its tip and has a U-shape as a whole. Further, the width is set to be a little narrower than the width of the notch 11, and the height is set so that there is a margin between it and the bottom of the notch 11. A roundness 14 is provided on the front side edge of the notch 11 to prevent contact with the protrusion 13. Both suction plates 10
a and 10b swing around their tops 12a,
The angle along the vertical direction of these tip surfaces can be changed.

A contact spring 15 and a terminal plate 16, as shown in FIG. 3, are provided at the backs of the conductive holes 6a and 6b, respectively. The contact spring 15 has a contact point 17 on the front surface of a bent portion 15a provided at the front end, and a terminal plate 16 is connected to the rear end. The tip of the cord 18 is connected to the rear end of the terminal plate 16.

Similar to conventional magnetic plugs, this magnetic plug is made by inserting two contact rods 20 provided at the connecting part 19 (see Figure 1) of a connecting device or electric appliance into the conductive holes 6a and 6b, and The ends of 10a and 10b are attracted to the iron piece 21 provided on the connection part 19, and the attraction force brings the tip of the contact rod 20 into contact with the contact 17 of the contact spring 15 (see Figure 3) to electrically connect. It is supposed to be done.

This magnetic plug is designed so that the vertical angle of the tip of the suction plate can be changed, so even if vibration, shock, downward force, etc. are applied to the container, it will not connect to the tip of the suction plate. There is less possibility that the angle of the iron pieces on the surface will be misaligned and a gap will be created between them. Therefore, the suction plate retains the plug better, and there is less risk that the suction plate's suction force will weaken and the plug will fall out of the connection, or that the connection with the connection will be incomplete and the temperature of the contact will rise. Become.

FIG. 4 shows another embodiment of the magnetic plug according to the present invention. As shown in the figure, this magnetic plug also has a container 24 made up of a body 22 and a cover 23 that are fitted together. Inside the container 24, there is a room 25.
A hole 26 is provided on both sides of the front of the room 25 to connect the room 25 and the front surface of the container 24. Inside the room 25, there is a permanent magnet block as shown in FIG. It is arranged as follows. A through hole 29 (which passes through in the lateral direction) is provided at the rear of the permanent magnet 27 and both attraction plates 28, and the rear ends thereof are rounded. A shaft (support rod) 30 that is thinner than the second through hole is passed through the through hole 29, and the shaft 3
Both sides of 0 are fixed to the side walls of the room 25. Preferably, the shaft 30 is made of a non-magnetic material. Room 25 and hole 26
The length from the lower end to the upper end is slightly longer than the heights of the permanent magnet 27 and the attraction plate 28, so that a margin is provided. The suction plate 28 can swing around a shaft 30. The rest of the structure is the same as the magnetic plug shown in Figures 1 and 2, and although not shown, conductive holes are provided on both sides of the front of the container, and there are conductive holes at the back of each conductive hole. The contact spring and terminal plate shown in FIG. 3 are arranged.

This magnetic plug also has a structure in which the angle along the vertical direction of the tip of the suction plate can be changed, so that the same effect as in the embodiment described above can be obtained.

Instead of a permanent magnet block as shown in FIG. 5, a permanent magnet block as shown in FIG.
It may be stored in a compartment 25 of the container 24 shown in FIG. As shown in FIG. 6, this permanent magnet block also has suction plates 32 on both sides of the permanent magnet 31, and protrusions 31a provided on both rear sides of the permanent magnet 31.
protrudes from a hole 32a provided at the rear of the suction plate 32. The rear portions of the permanent magnet 31 and the attraction plate 32 are rounded. The protruding portion of the protrusion 31a from the suction plate 2 (a dowel) is inserted into the shaft hole provided on both sides of the room, so that the suction plate 32 can swing around the protrusion 31a. Even in this case, the same effects as in the embodiment described above can be obtained.

[Purpose of the invention]

The magnetic plug according to the present invention includes a container in which a conductive hole is provided, a contact point to which the tip of a contact rod inserted through the conductive hole is applied is provided at the back of the conductive hole, and suction plates are provided on both left and right sides. A magnetic plug in which a permanent magnet is installed inside a container with the ends of both suction plates protruding outward from the conductive hole installation surface, and the vertical angle of the tip of the suction plate changes. The suction plate has a high plug retention performance.

[Brief explanation of the drawing]

1 and 2 are structural explanatory diagrams of one embodiment of the magnetic plug according to the present invention, FIG. 3 is a perspective view of a contact spring and a terminal plate housed in the magnetic plug, and FIG. 4 is a structural explanatory diagram of another embodiment of the magnetic plug according to the present invention, FIG. 5 is a perspective view of a permanent magnet block arranged in the magnetic plug, and FIG. 6 is a diagram illustrating the magnetic plug according to the present invention. FIG. 3 is a perspective view of a permanent magnet block placed inside another embodiment of the invention. 3.24...Container 5a, 5b-conductive hole 9,27.
31...Permanent magnets 10a, 10b, 28.32...
・Suction plate 17...Contact point, agent Patent attorney Takehiko Matsumoto Figure 1 Figure 2 Figure 5

Claims (1)

[Claims] (1) Equipped with a container with a conductive hole, a contact is provided at the back of the conductive hole to which the tip of the contact rod inserted through the conductive hole is applied, and a permanent magnet with suction plates on both left and right sides is attached to both suction plates. A magnetic plug installed in the container with the end thereof protruding outward from the conductive hole installation surface, and the vertical angle of the tip surface of the suction plate can be changed. A magnetic plug characterized by: