JP3148282U - Post fuse holder - Google Patents

Abstract

A fuse holder having a terminal having durability against stress applied when an electric wire is soldered to a terminal of the fuse holder. An integrated metal fitting is formed by joining a contact metal fitting built in a body of a post-type fuse holder and a side terminal, and is formed from an opening of the body main body along an outer hole of a screw end and a groove thereof. Insert a small piece of phosphor bronze plate of the full length size that fits into the groove of the hole of the side terminal, position and lock by the wedge effect resulting from this insertion, and fix this part with solder Is a post-type fuse holder. [Selection] Figure 5

Description

The present invention relates to a post-type fuse holder for holding a miniature fuse for electronic equipment on a body body attached to a panel together with a cap.

Conventionally, this type of fuse holder is equipped with a fuse F of a size corresponding to a cap 1 formed from a heat-resistant plastic molding material as shown in FIG. 1, the connection clip 3 in the body 1 and the contact fitting 4 in the body 2 are brought into contact with the connection lead plate 5 and the side terminal 6 so as to pass current.
For this reason, two terminals, in and out, are indispensable for pulling out the terminals, and the total stress applied during wiring is much higher for the side terminals than for the end terminals even when viewed from the configuration.

This is because the end terminal 17 is caulked and fixed with a rivet 16 for contact through a molding wall at the bottom of the body of the body, and the durability against stress is stable even as a mechanical work method. . On the other hand, as for the side terminal, most types have the tip portion 5a of the lead plate 5 brazed to the contact fitting 4 as shown in FIG. After being inserted into the rectangular opening 6a at the lower end, it was bent and joined, and this part was joined and fixed with solder 10.

The side terminal having the above-described structure has the following problems.
1) It is impossible to visually check for cracks, cracks, and the like that are considered to occur when the lead plate is inserted into the plate-like wide rectangular opening and then bent.
2) When the preheating temperature of the solder iron is applied more than necessary to the wire mounting hole at the tip of the terminal during wiring, there is a concern that the lead plate may be loosened at the bending point.
3) Since the lead plate is bent due to the work, the part may swell and the lock nut that fits into the molded screw part may not enter this, resulting in a product that requires secondary adjustment such as file hooking. Work efficiency is reduced.

Problems to be solved by the device

The present invention has been made to eliminate such problems. In a post-type fuse holder comprising a molded plastic cap and a body body, and further having side terminals and end terminals, the contact fitting incorporated in the body body. And a side terminal are joined together to form an integrated metal fitting that protrudes from the opening of the body body along the outer hole and groove at the end of the screw. Provided is a post-type fuse holder having a side terminal formed by fitting a small piece of a bronze plate, positioning and locking by a wedge effect resulting from this fitting, and fixing this portion with solder.

Means for solving the problem

In order to achieve the above object, the post-type fuse holder of the present invention is formed by inserting an integrated metal fitting formed by joining a metal contact and a side terminal incorporated in the body body through the opening of the body body, In a state where the side terminal is pulled out from the rectangular opening, a small piece of spring material is engaged with the lower side of the terminal so as to be overlapped, and this portion is fixed with solder.

Effect of device

The width of the small piece of the spring fitted into the groove for the side terminal is slightly longer than the dimensions of the rectangular opening of the groove and the molded screw, so that the wedge effect is exhibited by fitting and the part is fixed with solder. Stress enhancement in all directions can be obtained.

The best way to implement the device

As described above, according to the fuse holder of the present invention, the built-in integrated metal fitting can be inserted into the body body, and this can be locked with the rectangular opening at the end of the molded screw and the groove for the side terminal. Easy and skill-free.

An embodiment of the present invention will be described with reference to FIG. 3. 11 is a molded plastic cap, 12 is a molded plastic body, each of which has 13 clips, 14 contact fittings and 15 side terminals as functional parts. 17 end terminals are caulked using 16 rivets on the joined integrated metal fitting A and further on the bottom of the body body, and then fixed with solder 10.

In this state, the 13 clips and the 14 contact fittings are screwed together by screws. In the fuse holder, one base F ₁ of the fuse F is in contact with the above, and the other base F ₂ is the bottom of the body body of 12. A current path is formed between the end terminals that are fixed by caulking with 16 rivets.

FIG. 4 is a perspective view of an integrated fitting A in which 14 contact fittings and 15 side terminals inserted through the opening of the body used in the present invention are joined.
This integrated metal fitting A passes through the hole 12a in the molding screw terminal portion from the opening H of the molding body main body 12 of FIG. 3, and the constricted portion 15b is a groove portion of the body main body 12 along the groove 12c. Push until it matches.
After confirming this, 16 pieces made of a thin plate of phosphor bronze for spring having the same shape as the constricted portion are punched out at the position of the constricted portion 15 of the integrated metal fitting A and fitted into the constricted portion 15b. By this fitting, the constricted portion overlaps with the thin plate and is locked by the wedge effect.

Figure 5 is a small piece of 16 fitted into the neck portion 15b, the edges K _1, K ₂ of the hole in the hole 12a of the molded screw end portion of the body main body 12 by which a better adhesion between the parts , The contact in the longitudinal direction S ₁ , S _{2 of} the 16 small pieces completely eliminates the movement in the direction of the opening. In this state, the solder 10 is poured and fixed.

Even after the wire is soldered and connected to the wiring hole 15a, there is no effect of preheating on the lower constricted portion 15b, so there is no cause of loosening, looseness, etc. Post-type fuse holder Is obtained.

State diagram showing terminal fixing of conventional post-type fuse holder The perspective view which shows the fixation procedure of the side terminal of the conventional post-type fuse holder Detailed view showing grooves and holes in the main molding part of the post-type fuse holder of the present invention The perspective view which shows the fixation procedure of the integrated metal fitting of the post-type fuse holder of this invention State diagram of side terminal fixing part of post-type fuse holder of the present invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Molded plastic cap 12 Molded plastic body body 13 Clip 14 Contact metal fitting 15 Side terminal 16 Rivet 17 End terminal 18 Small piece 10 Solder

Claims (1)

In a post-type fuse holder consisting of a molded plastic cap and body body, and further having side terminals and end terminals, an integrated bracket is formed by joining the contact bracket built in the body body and the side terminal. Projected along the outer hole of the screw end and its groove from the opening of the main body, and fitted with a small piece of phosphor bronze plate of the full length dimension that fits the groove of the hole of the side terminal, positioning by the wedge effect resulting from this fitting, A post-type fuse holder having a side terminal formed by fixing this portion with solder after locking.

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