JPS5911193B2 - How to install the terminal block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for attaching a terminal block for electrical wiring to a plate-shaped holder.

Conventionally, this type of mounting method involves inserting the terminal block into a mounting hole drilled in the holder, and then crushing the edge of the mounting hole in the holder in the thickness direction, thereby mounting it against the periphery of the mounting hole. A method has been attempted in which a force is applied to protrude inward of the hole and the protruding force is used to press the peripheral edge against the outer circumferential surface of the terminal block.

However, in this method, a pressing force is inevitably applied to the terminal block by the peripheral edge, so if the terminal block is made of synthetic resin or ceramic material, the pressed part will be affected by the pressure. There is a problem that accidents may occur such as chipping or cracking due to pressure. Therefore, in order to solve this problem, a thin groove was formed on the side of the terminal block, and a thin slit was bored near the mounting hole, and this slit 15
Insert the tip of a tool, such as a screwdriver, into the terminal block, and then push the screwdriver toward the terminal block (generally twisting the screwdriver) to make the metal material between the slit and the mounting hole protrude toward the inside of the mounting hole. A method of fitting this into the above-mentioned narrow groove has also been considered. However, with this method, although it is possible to prevent the terminal block from breaking due to the deforming metal material, it is difficult to twist the screwdriver, that is, apply force by pointing the tip of the screwdriver toward the terminal block. If the screwdriver is twisted with too much force, the screwdriver will hit the terminal block and there is a risk of damaging the terminal block. Therefore, the present invention has been made to solve the above-mentioned problems, and by applying force only in a direction different from the terminal block side, that is, in the direction of the thickness of the board, the synthetic resin material can be removed. Another object of the present invention is to provide a terminal block mounting method that allows even a weak terminal block made of ceramic material to be mounted on a holder without damaging it. The configuration of the 35-ring embodiment will be described below with reference to example diagrams. In the metal plate-shaped substrate 1, 2
2a is a holding body, 2a is an embedded box mounting part provided at both ends of the holding body,
2b shows a plate-shaped sleeve portion formed by bending. Holder 2
has a rectangular mounting hole 3 for mounting a terminal block 4, which will be described later.
is drilled. In the terminal block 4 made of an insulating material such as ceramic material or synthetic resin material, 5 is a neck recessed in one end surface of the terminal block 4, and 6 is a head integrally formed with the terminal block via the neck 5. be. The head 6 is formed to have a size close to that of the mounting hole 3 in relative terms within a range that can be inserted into the mounting hole 3, so that the gap between the edge of the mounting hole 3 and the neck 5 is as small as possible. It is desirable to do so.
Next, 7 is a terminal plate provided on the terminal block, 8 is a cable end fastener provided on the plate-shaped base 1, and 4a is a terminal block provided as necessary, and is fastened by known means or the means according to the present invention. has been done. Reference numeral 9 indicates an insulating circuit element mounting plate provided as necessary.

Next, the procedure for attaching the terminal block 4 to the holder 2 will be explained.

First, the head 6 is inserted into the mounting hole 3 so that the neck 5 is positioned on the extension of the plate of the holder 2. (See Figure 3) Next, hold the holder 2 with the support 10 along the edge of the short side of the mounting hole 3.
A force is applied from a direction perpendicular to the direction of. As a result, a wedge-shaped groove like 7 is formed in the holding body 2, and at the same time, the short edge of the mounting hole 3 is plastically deformed toward the neck 5 so as to narrow the mounting hole 3, and the deformed portion T and the neck 5 are The engagement holds and fixes the terminal block 4 and prevents it from coming off. As is clear from the above description, in the present invention, the head 6 of the terminal block 4 is made to protrude from the mounting hole 3 of the holder 2, and the
Since the plastic deformation force is applied from the direction perpendicular to the holder plate surface near the edge of the holder, as mentioned above, when the head 6 is in the protruding state, for example, this edge can be There is an advantage that the terminal block 4 and the holder 2 can be integrated very easily by tapping lightly as described above.

Moreover, in the mounting method according to the present invention, the force that causes the holder 2 to undergo plastic deformation is perpendicular to the direction of plastic deformation as described above, and moreover, only the periphery of the mounting hole is simply inserted into the neck of the terminal block. Therefore, even if the plastic deformation force is excessive, it will not be applied directly to the terminal block, and it is generally used for insulating materials such as insulators and resins that have weak mechanical stress. This is an extremely suitable method for attaching the terminal block 4, which is mainly composed of the above, by unskilled workers without damaging it, and the usefulness of the present invention is highly evaluated.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a perspective view showing a terminal block attached to a holder, FIG. 2 is an exploded perspective view showing the terminal block installed, and FIG. 3 is a terminal block. Cross-sectional view showing the state before installation (left side) and the state after installation (right side). 2...Holding body, 3...Mounting hole, 4...
...Terminal block, 6...Head, 5...
neck.

Claims (1)

[Claims] 1 A mounting hole is drilled in the plate-shaped holder, and the terminal block made of insulating material such as synthetic resin or ceramics to be mounted has a head that can protrude from the mounting hole, and the head is attached to the and a neck formed at a position corresponding to the extension of the plate of the plate-shaped holder when protruding from the mounting hole, and a neck formed at a position corresponding to the extension of the plate body of the plate-shaped holder, so that when the head protrudes into the mounting hole, the neck portion is formed on the edge of the mounting hole. A plastic deformation force is applied to the part along the holder from a direction substantially perpendicular to the surface of the holder, and by narrowing the mounting hole, the periphery of the mounting hole is inserted into the neck, and the terminal block is held. A method for installing a terminal block, which is characterized by preventing the terminal block from coming off in a direction perpendicular to the board surface of the body.