JPS6028111Y2 - Terminal device for electrical parts - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a terminal device for electrical components with improved strength.

Utility Model 5, which has been proposed as a terminal device for conventional electrical parts.
In Publication No. 2-169738 and Japanese Utility Model Application No. 52-167545, measures are taken to prevent the terminal bolts from turning, so they will not turn, but bushings and nuts may turn, and they sometimes turn when external force is applied. However, loosening may occur.

In addition, if an external force is applied to the terminal bolt from the side, the rubber may deform significantly and the seal may not be able to perform its sealing function, resulting in oil leakage or the insulation between the terminal and the case being destroyed. there were.

There have also been proposals such as those in Japanese Utility Model Application Publication No. 53-36047, but since the nut is located at the bottom, it is necessary to solder the nut and the terminal bolt in addition to soldering it to the rotation stopper plate. However, this result also has the disadvantage of being weak against external rotational force of the terminal bolt.

Furthermore, there is a proposal to fix the bushing with rivets as in Japanese Utility Model Application Publication No. 49-63451, but this has drawbacks such as a gap between the bushing and the rivet, resulting in incomplete connection of external terminals and increased contact resistance. was there.

In order to eliminate the above-mentioned drawbacks, the present invention arranges a reinforcing spacer made of a rigid insulator around the outer periphery of the elastic insulator, and uses a connecting rod made of a rigid insulating plate at the bottom to connect each terminal. The bolts are connected and fixed, and the foot of the replaced bushing is hooked onto the recess or convex part of the upper cover to prevent oil leakage and insulation between the terminal and the case. This is intended to solve problems such as a decrease in the voltage and a decrease in withstand voltage.

An embodiment of the present invention will be described below with reference to the drawings.

That is, as shown in FIGS. 1 and 2, a case top cover 1 made of aluminum, brass, tin plate, etc., which seals the case housing the electric component element, is provided with terminal mounting protruding holes 2 and recesses 3 for hooking the legs of bushings, which will be described later. A bushing 4 made of resin molding is attached to the upper part of the protruding hole 2.

A foot 5 is integrally provided at the lower part of the bushing 4, and the lower part of the bushing 4 connects the inside of the protruding hole 2 and the upper cover 1.
An elastic insulator 6 such as silicone rubber is provided at the bottom of the
A connecting rod 8 made of a rigid insulating plate made of glass epoxy, glass polyester, phenol resin, ceramic, etc. connects and fixes two terminal bolts 7 to the lower part of the elastic insulator 6.
, and a rotation stopper 9 is provided at the lower part of the connecting stack 8.

Further, the outer periphery of the elastic insulator 6 between the upper lid 1 and the connecting stack 8 is coated with phenol resin, compressed paper, presspod, etc.
Reinforcement spacer 10 made of a type of rigid insulator such as glass epoxy, glass polyester, ceramics, etc.
will be established.

In the figure, 11 is a nut, 12 is a washer, 13 is a filled resin,
14 is solder, and the terminal bolt 7 and nut 11 are tightened until the reinforcing spacer 10 is sandwiched between the case top cover 1 and the connecting rod 8 and fixed.

In this case, the head of the terminal bolt 7 is brought into contact with the rotation stopper 9 provided at the bottom of the connecting rod 8, and is tightened with a nut 11 provided at the top of the bushing 4 via a washer 12, and then soldered 14. do.

In addition, the inside of the bushing 4 is filled with resin 13 and the nut 11 is tightened.
and the washer 12 is fixed integrally with the bushing 4.

Furthermore, although FIG. 1 describes a structure in which a recess 3 is provided in the case top cover 1 that the foot 5 of the bushing 4 comes into contact with, instead of such a structure, a convex portion may be provided so that the foot can be caught.

As described above, a bushing is attached to the top of the terminal mounting protrusion hole provided in the top cover that seals the case containing the electrical component element, and the foot provided at the bottom of the bushing is hooked into the concave or convex part of the top cover to close the bushing. At the same time, each terminal bolt is connected and fixed using a connecting rod made of a rigid insulating plate at the bottom of the elastic insulator disposed inside the protruding hole and at the bottom of the top cover. A reinforcing spacer made of a rigid insulator is provided between the upper cover and the connecting stack at the outer periphery of the bushing. By filling the interior with resin and integrally fixing the washer and nut to the bushing and terminal bolt, the external force applied to the elastic insulator is absorbed by the reinforcing spacer, making it mechanically strong and improving resistance to external forces.

In addition, since the elastic insulator does not deform due to external force, there is no oil leakage, insulation deterioration, or voltage withstand deterioration.Moreover, the head of the terminal bolt is soldered to the rotation stopper and the inside of the bushing is filled with resin. Since it is fixed, it has a large rotation radius, is resistant to torque, eliminates loosening around the bushing, and provides a terminal device for electrical components with stable characteristics and improved strength.

[Brief explanation of drawings]

The drawings are all related to the present invention; FIG. 1 is a side sectional view showing a terminal device for an electrical component according to one embodiment, and FIG. 2 is a bottom view thereof. 1...Top lid, 2...Protrusion hole, 3...
... recess, 4... bushing, 5...
・Legs, 6...Elastic insulator, 7...Terminal bolt, 8...Connection rod, 9...Rotation stopper, 10... ...Reinforcement spacer, 11...
...Natsuto, 12...Washer, 13...
・・・Filled resin, 14・◆・・◆・Solder〇

Claims (1)

[Scope of utility model registration request] An upper lid that seals a case housing an electrical component element, a concave or convex portion provided on the upper lid, a bushing attached to the upper part of the terminal mounting protrusion hole provided on the upper lid, and a bushing integrated with the lower part of the bushing. a foot provided at a position that matches the recess or protrusion provided in the upper cover, an elastic insulator provided at the lower part of the bushing inside the protruding hole and at the lower part of the upper cover, and an elastic insulator provided on the outer periphery of the elastic insulator. a reinforcing spacer made of a rigid insulator, a connecting stack rod provided at the bottom of the reinforcing spacer and the elastic insulator, a rotation stopper provided at the bottom of the connection stack, and the rotation stopper. , a terminal bolt that fixes the connecting stack rod, the elastic insulator, and the bushing and whose head is soldered to the rotation stopper; and a nut provided on the top of the bushing with a washer for tightening the terminal bolt. . A terminal device for an electrical component, comprising: a filling resin filled into the inside of the bushing and fixing the nut and washer; and a foot of the bushing is hooked into a recess or a projection of an upper cover.