JPS6258098B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a fuse circuit unit, and more particularly to a fuse circuit unit that is detachable from an electromagnetic switch.

(Prior art) Vehicles are equipped with various electrical components, but in vehicles such as motorcycles, which have a particularly small installation space, certain electrical components may be equipped with other electrical components or parts related to the electrical component. A number of designs have been adopted that allow for easy installation. For example, there is a type of electromagnetic switch in which the main fuse of the main circuit that connects each load of the vehicle and the battery is integrally assembled with the electromagnetic switch that opens and closes the starting circuit (Utility Application No. 53-97974).

However, there is no electrical relationship between the electromagnetic switch and the fuse of a load circuit such as a lamp, and it is unavoidable that the fuse must be assembled integrally with the electromagnetic switch, as in the case of the electromagnetic switch mentioned above. None. For this reason, in conventional vehicles, an electromagnetic switch and a fuse are provided independently. Therefore, manufacturers must continue to supply electromagnetic switches without fuses, and as a result, there are two types of electromagnetic switches: those with fuses and those without fuses.
It is necessary to produce different types of electromagnetic switches, which is extremely problematic in terms of mass production, inventory management, etc.

(Object of the Invention) The present invention has been made in view of the above-mentioned points, and the fuse circuit is made into a unit and can be detached from the electromagnetic switch, and the fuse circuit can be attached to the electromagnetic switch as necessary. The purpose is to standardize them and improve mass productivity.

(Summary of the invention) In order to achieve the above object, the present invention includes:
An electromagnetic switch is a type of electromagnetic switch that is removably attached to the cover of the electromagnetic switch, and has a fuse attached to one end. A holding part that holds one terminal of the input terminal has a first terminal provided at the other end with a hole that removably fits into the bolt part of the input terminal, and a holding part that holds the other terminal of the fuse at one end. is a second terminal provided with an output terminal section arranged in line with the connection terminal of the coil at the other end, a fuse storage section surrounding each holding section of the first and second terminals, and a fuse storage section of the second terminal. a case having an output terminal portion and a terminal storage portion adjacent to the output terminal portion and surrounding a hole through which the coil connection terminal loosely passes, and holding the first and second terminals; A fuse circuit unit is formed by integrally molding a locking portion that engages with a protrusion protruding from the cover of the electromagnetic switch, and the fuse circuit unit is attached to the electromagnetic switch as necessary. The present invention provides a fuse circuit unit in which the standards of electromagnetic switches are the same regardless of whether or not a fuse circuit is included, thereby improving mass productivity.

(Embodiment of the Invention) An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a fuse circuit unit 1 according to the present invention.
This is an assembled perspective view when the fuse circuit unit 1 is attached to the electromagnetic switch 10, and the fuse circuit unit 1 is connected to the fixed contact members 13, 14 of the electromagnetic switch 10 together with the power cables 30, 31 via the mounting terminals 3, 5, as will be described later.
It is removably fastened to.

The fuse circuit unit 1 consists of a case 2 and mounting terminals 3, 4, and 5 that are integrally fixed to the case 2. As shown in FIG.
A is provided with a connection terminal portion 3c for connecting a fuse, and the other end 3b is provided with a mounting hole 3d.
As shown in FIG. 3, the connecting terminal portion 3c has a substantially T-shape, and rectangular projecting portions 3e, 3e' are formed symmetrically on both sides, and each of these projecting portions 3e, 3e' is As shown in FIGS. 2 and 4, the projecting portions 3e, 3 are symmetrically curved toward the central portion 3a' and on one side.
The side end surfaces 3g and 3g' of e' face the flat surface of the central portion 3a' at a predetermined distance d, respectively. This distance d is the distance between the main fuse, for example, the terminal 21 of the blade fuse 20.
The spacing is set to be slightly narrower than the plate thickness. Further, the diameter of the mounting hole 3d is set to be slightly larger than the outer diameter of the bolt portion 13a of the fixed contact member 13 of the electromagnetic switch 10.

The mounting terminal 3 having such a shape is integrally formed with a thin plate such as a copper member, and therefore, the overhanging portions 3e, 3
e' has elasticity in the direction of expansion at the curved portion and can function satisfactorily as a contact portion.

A connecting terminal portion 4c for connecting the fuse 20 is provided at one end 4a of the mounting terminal 4, and bifurcated connecting terminal portions 4d, 4d are provided at the other end 4b in parallel with the connecting terminal portion 4c. 4c is formed in exactly the same manner as the connecting terminal portion 3c of the mounting terminal 3. This mounting terminal 4 is also formed of a thin copper plate like the mounting terminal 3. The connection terminal portions 3c and 4c of these two mounting terminals 3 and 4 are connected to the blade fuse 20.
The blade fuse 20 is connected to the connection terminals 21 and 22 of the blade fuse 20 .

The mounting terminal 5 is a reinforcing terminal for fixing the coupler unit 1 to the electromagnetic switch 10, and one end 5a is diagonally cut out and the other end 5b has a mounting hole similar to the mounting hole 3d of the mounting terminal 3. 5d is drilled. This mounting terminal 5 is electrically unrelated and is merely used to reinforce the mechanical strength when the fuse circuit unit 1 is mounted.

These mounting terminals 3, 4, and 5 are arranged as shown in FIG. 2, and are integrally molded from a synthetic resin member to form the fuse circuit unit 1, as shown in FIG. Each connection terminal part 3c of the mounting terminals 3 and 4,
4c is surrounded by a peripheral wall 2a, and a fuse storage section 6 is formed by this peripheral wall 2a. Mounting terminal 4
The connecting terminal portions 4d, 4d' are surrounded by the peripheral wall 2b, and holes 2 are provided on the sides of these connecting terminal portions 4d, 4d' through which the connecting terminals 16, 17 of the electromagnetic switch loosely pass.
c (Fig. 1) is provided. A terminal storage portion 7 is formed by this peripheral wall 2b. Furthermore, the other ends 3 of the mounting terminals 3 and 5 are attached to both sides 2d and 2d' of the case 2.
Locking portions 2e and 2e' are provided hanging downward on the b and 5b sides, and locking holes 2f and 2f' are provided in each of these locking portions 2e and 2e'. Furthermore, case 2
A locking projection 2g (only one of which is shown) is provided on both side surfaces 2d and 2d' of the peripheral wall 2a at approximately the center thereof.

Returning to FIG. 1, the electromagnetic switch 10 consists of a case 11 and a cover 12 fixed to the case 11, and the cover 12 is provided with fixed contact members 13, 14 and a movable contact member 15 (FIG. 6). The bolt portions 13a, 14a of the fixed contact members 13, 14 protrude vertically upward from the upper surface 12a of the cover 12. Further, on the upper surface 12a of the cover 12, coil connection terminals 16 and 17, which will be described later, are connected to the fixed contact member 1.
The bolt portions 3 and 14 are parallel to each of the bolt portions 13a and 14a, and project vertically upward. This cover 1
On both sides of the fuse circuit unit 1 are locking protrusions 12b that fit into the locking holes 2f and 2f' of the fuse circuit unit 1.
12b' is provided protrudingly.

Inside the case 11 is a coil 1 as shown in FIG.
8 and a plunger 19 fitted into the center hole of the coil 18 through a return spring (not shown) so as to be removable.
is housed, and both ends of the coil 18 are connected to connection terminals 16 and 17 protruding from the cover 12, respectively, within the case 11. And cover 12
is fitted into the case 11 and firmly fixed by caulking.

The coupler 40 consists of a main body 41 and a cover 42. The main body 41 is fitted into the terminal housing 7 of the fuse circuit unit 1 from above, and the cover 42 is fitted over the top of the fuse housing 6. This cover 42
A locking piece 42a (only one shown) is provided hanging from both sides of the case 2, and the peripheral wall 2a of the case 2 is attached to the tip of the locking piece 42a (only one is shown).
A locking pawl 42b that engages with a protrusion 2g protruding from both sides of the plate is provided. Furthermore, connection terminals (none of which are shown) that connect to the connection terminal portions 4d, 4d' of the mounting terminal 4 and the coil connection terminals 16, 17 of the electromagnetic switch 1 are arranged within the main body 41. One end of each of the lines 45 to 48 is connected to each connection terminal, and the other ends of each of these lines 45 to 48 are connected to each electrical component described later.

Now, when attaching the fuse circuit unit 1 to the electromagnetic switch 10, first, each connecting terminal part 3c of the mounting terminals 3, 4 of the fuse circuit unit 1,
4c each connection terminal 21 of the blade fuse 20,
22 is press-fitted. This allows mounting terminals 3 and 4
is electrically connected to the case 2 through the blade fuse 20, and the blade fuse 20 is electrically connected to the case 2.
is housed in the fuse housing section 6 of. Next, as shown in FIG. 1, the mounting holes 3d and 5d of the mounting terminals 3 and 5 are fitted into the bolt parts 13a and 14a of the fixed contact members 13 and 14 from above the cover 12 of the electromagnetic switch 10, respectively. By moving the case 2 downward, each locking hole 2f, 2 of the locking portions 2e, 2e' on both sides of the case 2 is opened.
Each protrusion 12b, 12b' of the cover 12 is fitted into f'. In this state, the fuse circuit unit 1 is placed and locked on the cover 12, and the bolt parts 13a, 14a of the fixed contact members 13, 14 pass through the mounting holes 3d, 5d of the mounting terminals 3, 5, and the coil connecting terminals 16 and 17 loosely pass through the hole 2c of the case 2 and connect the connection terminal portions 4d and 4 of the mounting terminal 4 into the case 2.
It is placed vertically above alongside d′.

Next, a crimp terminal 3 with one end of the power cable 30 connected to the bolt portion 13a of the fixed contact member 13 is attached.
2 are fitted together, and a nut 36 is screwed together via a washer 34 to securely fasten the mounting terminal 3 and the crimp terminal 32 together. As a result, the mounting terminal 3 is attached to the fixed contact member 13.
electrically and mechanically connected and fixed. In addition, the power cable 3 is connected to the bolt portion 14a of the fixed contact member 14.
The crimp terminal 33 to which one end of the crimp terminal 1 is connected is fitted, and the nut 37 is screwed together via the washer 35, thereby fixing the mounting terminal 5 and the crimp terminal 33 together. Thus, the fuse circuit unit 1 is connected to the electromagnetic switch 10.
It is firmly fixed on the cover 12 of.

After attaching the fuse circuit unit 1 to the electromagnetic switch 10, connect the coupler 4 from above the case 2.
0, insert the main body 41 into the terminal housing 7, connect the corresponding connection terminals 4d, 4d', 16, and 17, and cover the upper part of the fuse housing 6 with the cover 42 to close the fuse. 20 and engages the locking claw 42b with the locking protrusion 2g to lock the coupler 40 to the case 2.

The other ends of the power cables 30 and 31 are respectively connected to a positive terminal of a battery 50 and a connection terminal of a starter motor 51, as shown in FIG. In addition, the connection terminal portion 4d of the mounting terminal 4 of the fuse circuit unit
is the load 5 via the line 45 and the main switch 52.
3, the connecting terminal portion 4d' is connected via a line 46 and a rectifier 54 to an output terminal of an alternator 55 mounted on the engine. One coil connection terminal 16 of the electromagnetic switch 10 is grounded via a wire 47,
The other connection terminal 17 is connected to the load side connection terminal of the main switch 52 via a line 48 and a starter switch 56.

When the main switch 52 is closed (turned on), the load 53 is connected to the battery 50 via the fuse 20, and power can be supplied to the load 53. Next, when the starter switch 56 is closed, the coil 18 is energized and the plunger 19 is moved downward under suction against the spring force of a return spring (not shown).
The movable contact member 15 is pressed against the fixed contact members 13 and 14 by the spring force of a contact spring (not shown), the electromagnetic switch 10 is closed, and the starter motor 51 is started. This starts the engine (not shown). When the starter switch 56 is opened (turned off) after starting the engine, the coil 18 is deenergized, and the plunger 19 is moved upward by the spring force of the return spring, pushing up the movable contact member 15 against the spring force of the contact spring. It is separated from the fixed contact members 13 and 14. As a result, the electromagnetic switch 10 is opened and the starter motor 51 is stopped.

When the engine is started, a generator 55 is driven by the engine, and the alternating current output of the generator 55 is converted to direct current by the rectifier 54, and then connected to the mounting terminal 4, the fuse 20, the mounting terminal 3, and the power cable 3.
0 to the battery 50 to charge the battery 50.

(Effects of the Invention) As explained above, according to the present invention, the connection bolt part of the output terminal and the connection terminal of the coil housed in the case enter outside the cover fixed to the case and protrude. A second type of electromagnetic switch is removably attached to the cover, and has a holding part for holding one terminal of the fuse at one end and a hole for removably fitting into the bolt part of the input terminal at the other end. a second terminal having a holding part for holding the other terminal of the fuse at one end and an output terminal part arranged in line with the connecting terminal of the coil at the other end; The first terminal has a fuse storage part that surrounds each holding part of the two terminals, an output terminal part of the second terminal, and a terminal storage part that is adjacent to the output terminal part and surrounds a hole through which the coil connection terminal loosely passes. , second
A fuse circuit unit is formed by integrally molding a case that holds the terminal and a locking part that hangs down from the side of the case and engages with a projection protruding from the cover of the electromagnetic switch, and Since the electromagnetic switch is equipped with the fuse circuit unit according to the above, the specifications of the electromagnetic switch can be made the same regardless of whether there is a fuse circuit or not.
In addition, since only electromagnetic switches can be produced, it is extremely effective for mass production. Also,
Since the first terminal of the fuse circuit unit is fastened to the input terminal of the electromagnetic switch, the fuse circuit unit can be firmly fixed to the electromagnetic switch, and the electrical connection can be ensured. It is possible. Furthermore, since each of the first and second terminals is fixed by molding, there is no wobbling or pitch deviation, and the fuse circuit unit can be formed with high precision.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway assembled perspective view of the fuse circuit unit according to the present invention installed in an electromagnetic switch; FIG. 2 is a layout diagram showing one embodiment of the mounting terminal of the fuse circuit unit according to the present invention; 3 is a developed view of the fuse connecting terminal portion of the mounting terminal in FIG. 4, FIG. 4 is an end view of the fuse connecting terminal portion of the mounting terminal in FIG. 2, and FIG. 5 is a perspective view of the fuse circuit unit according to the present invention. , FIG. 6 is a circuit diagram showing an embodiment of an electric circuit when a fuse circuit unit according to the present invention is installed in an electromagnetic switch. 1...Fuse circuit unit, 2...Case, 3~
5...Mounting terminal, 10...Electromagnetic switch, 20...Fuse, 30, 31...Power cable, 40...Coupler.

Claims (1)

[Claims] 1. The electromagnetic switch is removably attached to the cover of a type of electromagnetic switch that enters the outside of the cover fixed to the case and protrudes from the connecting bolt part of the output terminal and the connecting terminal of the coil housed in the case, and one end a holding part that holds one terminal of the fuse, a first terminal having a hole at the other end that removably fits into the bolt part of the input terminal, and a holding part that holds the other terminal of the fuse at one end. A holding portion includes a second terminal provided with an output terminal portion arranged at the other end in line with the connection terminal of the coil, a fuse storage portion surrounding each of the holding portions of the first and second terminals, and the second terminal. a case for holding the first and second terminals and having an output terminal portion of the terminal and a terminal storage portion adjacent to the output terminal portion and surrounding a hole through which the coil connection terminal loosely passes; and a case for holding the first and second terminals; A fuse circuit unit characterized in that a locking portion that hangs down and engages with a projection protruding from the cover of the electromagnetic switch is integrally molded with resin.