JPH11329205A - Directly mounted fuse to equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily connect another terminal to a fusable element of a fuse, even after it is screwed to a device. SOLUTION: This fuse consists of an L-shaped conductive board 10 having a fuse-element 2 in the middle, a stud bolt 15 for screwing a first terminal, the bolt extending at one end of the conductive board, an assembling hole 16 being mounted on equipment and formed on the other end of the conductive board, and an L-shaped resin case 20 formed integrally with the conductive board. A window 3 is formed in the resin case 20 so that a fuse-element is to be seen, and a transparent cover 4 is set in the window. A U-shaped fitting frame 25 is provided on the other end of the resin case 20 and a fitting claw 27 is extended for pressing a second terminal from the back, the second terminal is inserted into the fitting frame. The second terminal is temporarily fitted to the other end of the conductive board. One or more projections 26 are provided in the inner side of the fitting frame in the direction that the second terminal is inserted, and the second terminal is pressed against the other end of the conductive board.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device-directed fuse used for connecting a terminal from an alternator to a terminal from a battery.

[0002]

2. Description of the Related Art A fuse 80 as shown in FIGS. 9 and 10 has conventionally been used for directly attaching a fusible material to an auxiliary machine such as a starter (Japanese Patent No. 2637846).
The fuse 80 is a bolt-in type, has a fusible body 81 at an intermediate portion, and has tab-shaped terminals 8 at both ends of the fusible body 81.
2 and 82 are respectively provided, an assembling hole 83 is formed in each terminal 82, and the fusible body 81 is covered with a pair of covers 84 and 84. After inserting the mounting hole 83 of the fuse 80 into the stud bolt 86 erected on the device 85, the terminal 82 is screwed to the stud bolt 86 with the nut 87. In order to assemble the harness terminal of the wire harness (not shown) and the device 85 with the fuse 80 interposed, the terminal of the fuse 80 and the terminal of the harness are inserted through the stud bolt 86 of the device 85 and the nut 87 is used. Screw it.

However, the harness terminal is connected to the device 85.
When assembling the terminal, it is necessary to temporarily lock the harness terminal temporarily with a fixing member (not shown), so that the assembling work is troublesome.

[0004]

SUMMARY OF THE INVENTION In view of the above, it is an object of the present invention to provide a fuse for directly mounting a device, which can securely lock a harness terminal temporarily without using a fixing member. I do.

[0005]

In order to achieve the above object, the present invention provides an L-shaped conductive plate having a fusible body at an intermediate portion, a first terminal protruding from one end of the conductive plate, and a first terminal. And a device mounting hole formed at the other end of the conductor plate and attached to the device, and a resin case integrally formed with the conductor plate, and a device direct mounting fuse. (Claim 1). A window is formed in the resinous case so as to face the fusible body, and a fuse for directly mounting the device is employed in which a transparent cover is inserted into the window (claim 2). A U-shaped locking frame is erected on the other end of the resin case, and a locking claw that presses a second terminal inserted into the locking frame from behind is projected, and the second terminal is connected to the second terminal. A fuse directly attached to the device, which is temporarily locked to the other end of the conductor plate, is also employed (claim 3).
One or more ridges are provided on the inner surface of the locking frame in the terminal insertion direction, and a device-directed fuse for pressing the second terminal against the other end of the conductor plate is also effective (claim 4).

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 to FIG. 8 show an embodiment of a device-directed fuse according to the present invention. In FIG. 1, the fuse for directly mounting the device (hereinafter, referred to as a fuse)
1A is an L having a fusible body 2 in the middle part.
A stud bolt 15 protrudes from one end of a U-shaped conductor plate 10, an assembly hole 16 is formed at the other end, and the conductor plate 10 and the resin case 20 are integrally formed of resin. The fusible body 2 is provided with a fusing portion 2a that is blown off by heat generated by an overcurrent at an intermediate portion.

As shown in FIGS. 2 to 6, a conductor plate 10 in which a flat plate 11 and a bent plate 12 are coupled in an L-shape has a fusible body 2 at an intermediate portion of the flat plate 11, and has one end. A stud bolt 15 is erected upward on an extension plate 13 provided on one side surface of the portion 11a, and one end portion 12a of a bent plate 12 is coupled to the other end portion 11b of the flat plate 11, thereby forming a bent plate. An assembly hole 16 is formed in the other end 12b of the assembly 12. In this embodiment, the extension plate 13 is provided on the flat plate 11, but it is also possible to directly protrude the stud bolt 15 at one end 11a of the flat plate 11.

A first terminal (plate-like terminal or LA terminal) 30 (see FIG. 7) is screwed to the stud bolt 15. The flat plate 11 and the extension plate 13 are on the same plane.
And the bent plate 12 are substantially at right angles. In the assembly hole 16, FIG.
As shown in (1), a stud bolt (or simply a bolt) 51 provided on a device 50, a cover (not shown), or the like is inserted. As described above, since the stud bolt 15 for screwing the first terminal 30 and the mounting hole 16 for insertion into the stud bolt 51 of the device 50 are provided, the fuse 1A of the present invention is directly mounted on the device 50. It is a bolt-on type that can be used.

As shown in FIG. 1 to FIG.
Is formed of resin integrally with the conductor plate 10 and the extension plate 13. Thereby, the waterproofness of the conductor plate 10 and the extension plate 13 can be ensured, and the rigidity can be improved. The resin case 20 has a window 3 at a position facing the fusible body 2.
Are formed. A transparent cover 4 is inserted into the window 3,
Thereby, the state of the fusible body 2 inside can be easily seen at a glance. Thereby, the state of the fusible body 2 can be easily confirmed.

The resin case 20 corresponding to the bent plate 12 of the conductive plate 10 has a U-shaped locking frame 25 for locking a second terminal (battery terminal) 35 to the resin case 20.
Is provided, and two projections 26, 26 are provided on the inner surface of the locking frame 25.
And a locking claw 27 for pressing the second terminal 35 inserted into the locking frame 25 from behind is provided on the resin case 20. The two ridges 26, 26 are connected to the second terminal 35 (FIG. 7).
(See FIG. 1). One side surface of one end 12 a to the other end 12 b of the bent plate 12 is exposed from the resin case 20.

By providing the locking claw 27 on the resin case 20, the second terminal 35 can be easily temporarily locked to the fuse 1A. For this reason, if the fuse 1A is assembled in advance on the wire harness side (not shown), for example, the magnet clutch 50 as a device can be kept in the assembled state.
Can be mounted directly on In other words, parts other than the fuse 1A need not be used during the assembling work. As a result, the workability of attaching to the magnet clutch 50 can be improved as compared with the related art. Therefore,
For example, the first terminal 30 from the alternator side circuit (not shown) and the second terminal 35 from the battery side circuit (not shown) can be directly connected via the fuse 1A.

Next, the case where the first terminal 30 and the second terminal 35 are connected to the fuse 1A will be described. 1 and 7
As shown in (1), after inserting a hole (not shown) of the first terminal 30 connected to the alternator side circuit into the stud bolt 15 of the fuse 1A, the first terminal 30 is screwed to the stud bolt 15 with a nut 38. . Insert the second terminal 35 connected to the battery side circuit into the locking frame 25 of the fuse 1A,
The second terminal 35 is engaged with the locking claw 27. Thereby, the second terminal 35 is locked to the resin case 20 and is electrically connected to the bent plate 12 of the conductor plate 10. That is, the first terminal 3 is provided via the conductor plate 10 having the fusible body 2 in the middle part.
0 is directly connected to the second terminal 35.

A magnet clutch 50 is arranged beside a starter 55 (see FIG. 7 or 8) for starting an engine (not shown) to switch on a power supply from a battery when the engine is started. Magnetic clutch 50 fixed to base 56 together with starter 55
Has a stud bolt 51 protruding therefrom.
The fuse 1A is fixed to the magnet clutch 50 by screwing a nut 52 (see FIG. 8) and a stud bolt 51 into the mounting hole 16 of the fuse 1A.

Thus, the first terminal 30 and the second terminal 35
Can be assembled to the fuse 1A in advance, so that the fuse 1
A and the harness terminal need not be separately assembled. Thereby, the assembling workability can be remarkably improved as compared with the related art.

[0015]

As described above, according to the first aspect, the stud bolt is disposed at one end of the conductor plate having the fusible body at the intermediate portion, and the assembling hole is formed at the other end. Since the conductor plate is integrally formed with the resin case, the waterproofness and rigidity of the conductor plate can be improved. Claim 1
Is a bolt-on type that inserts the first terminal into the stud bolt, and the connection location of the first terminal and the place of attachment to the equipment are separate, so compared to the conventional bolt-in type fuse, the first terminal The fuse can be attached to the device even in the connected state. As a result, the consistent operation of connecting the first terminal to the fuse and attaching the first terminal to the device can be improved as compared with the related art.

According to the second aspect, since the window through which the fusible material can be seen is formed in the resin case and the transparent case is inserted into the window, the appearance of the fusible material can be easily monitored from the appearance. .

According to the third aspect, the U-shaped locking frame is provided at the other end of the resin case, and the locking claw pressing the second terminal inserted into the locking frame from the rear is provided. Since it protrudes, the second terminal is easily locked to the end of the resin case. Thereby, the second terminal can be securely locked temporarily to the other end of the conductor plate. Then, for example, when the second terminal is provided at the end of the wire harness, the second terminal can be easily temporarily fixed without using a conventional fixing member. Therefore, workability in assembling the second terminal and the device is improved.

According to the second and third aspects, since the second terminal can be temporarily locked to the fuse, the fuse is attached to the device while the fuse is attached to the wire harness.
Further, for example, the first terminal from the alternator-side circuit and the second terminal from the battery-side circuit can be electrically directly connected via a conductor plate. This makes it possible to prevent noise from other loads and reduce the manufacturing cost of the fuse. According to the fourth aspect, since one or a plurality of ridges are provided on the inner surface of the locking frame in the terminal insertion direction, the second terminal inserted into the locking frame is pressed against the conductor plate by the ridge. . Thereby, reliable temporary locking can be performed, and the assembling work to the device is improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing one embodiment of a fuse for directly mounting a device according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a left side view of FIG. 2;

FIG. 5 is a right side view of FIG. 2;

FIG. 6 is a rear view of FIG. 2;

FIG. 7 is a diagram illustrating a state in which a device-directed fuse to which first and second terminals are screwed is fixed to a magnetic clutch.

FIG. 8 is a diagram viewed from the direction of arrow B in FIG. 7;

FIG. 9 is a perspective view showing a conventional fuse.

FIG. 10 is an exploded view of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1A Fuse for direct attachment to equipment 2 Fuseable body 3 Window 4 Transparent cover 10 Conductor plate 16 Assembly hole 20 Resin case 25 Locking frame 26 Ridge 27 Locking claw 30 First terminal 35 Second terminal

Claims (4)

[Claims] 1. An L-shaped conductor plate having a fusible body at an intermediate portion, a stud bolt projecting from one end of the conductor plate and screwing a first terminal, and a second end of the conductor plate A fuse for directly attaching to a device, comprising a mounting hole formed and attached to the device, and a resin case integrally formed with the conductor plate. 2. The fuse according to claim 1, wherein a window is formed in the resin case so as to face the fusible body, and a transparent cover is inserted into the window. 3. A U-shaped locking frame is erected at the other end of the resin case, and a locking claw for pressing a second terminal inserted into the locking frame from behind is protruded. 3. The fuse according to claim 1, wherein the second terminal is temporarily locked to the other end of the conductor plate. 4. The device according to claim 3, wherein one or a plurality of ridges are provided on the inner surface of the locking frame in a terminal insertion direction, and the second terminal is pressed against the other end of the conductor plate. Fuse for direct attachment to equipment.