JP3383866B2 - Power supply branching device for vehicles - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle power supply branch device applied to a fuse in a fuse box of an automobile or the like.

[0002]

2. Description of the Related Art In vehicles such as automobiles, fuses provided in a power supply circuit for various electric components are concentrated in one place and are housed in a fuse box. The fuse box is installed near the driver's seat in the vehicle compartment and can be inspected at any time. Conventionally, the fuse provided in this way was a straight type housed in a glass tube, but recently, a fuse wire bent in a U shape is housed in a flat case made of synthetic resin, A so-called flat fuse, in which two flat electrode plates are projected in one direction from a die case, has been widely used.

By the way, in recent vehicles, many devices such as wireless devices, car televisions, and auto-navigators are installed in the room by the user afterwards. In this case, a power source is required, but a major problem is where to take this power source. Conventionally, power has been obtained by inserting a power plug into a cigarette lighter socket.

However, since the cigarette lighter socket is manufactured for the temporary use of the cigarette lighter, the positive electrode has a point contact structure and is suitable for long-term use. I can't help it. This is because there is a possibility that contact failure may occur due to vibration or touch of the cord. If a contact failure occurs, that portion will generate heat, and the contact failure will give noise to the wireless device. Further, when a smoker is boarding, it is inconvenient because the power cord must be unplugged each time the cigarette is lit.

Conventionally, it was common sense to take power from the socket of a cigarette lighter, so there are many parts related to it, but it was not considered to take power from other places. , And the other parts were in a state of none. Therefore, there are some cases where a cut is made in a part of the covering of the covered electric wire that goes from the fuse box to one of the electrical components, and the electric wire is connected here to supply power to a new load. It is not preferable in terms of current capacity and contact failure.

[0006] Therefore, the applicant of the present invention has devised a power supply branching device for a vehicle, which has a simple structure but has no room for contact failure and the like and is capable of supplying a stable power supply to a load, as Japanese Patent Application No. 6-167416. A patent application has already been filed. The gist of the present invention is to form a shape in which a thin metal plate is bent to cover one electrode plate portion and a case portion of a flat fuse provided in a vehicle power supply circuit. A power supply branching device for a vehicle, in which the tip of a covered electric wire is connected to.

With this structure, the electrode plate covered with the thin metal plate is inserted into the receiving electrode of the fuse box in the same manner as in the conventional flat fuse, so that a desired current can be taken out from the portion. You can do it. In this case, if the electrode plate is connected to the power supply side of the fuse box, the power can be supplied regardless of whether the ignition switch is on or off.
Power can be supplied to the load while the vehicle is parked. If you take it from the accessory terminal side,
Since the power can be turned off when the ignition switch is turned on and the power supply to the load can be turned off when the ignition switch is turned off, over-discharge of the battery can be prevented. Thus, the completion of the present invention makes it extremely convenient to supply power to the load provided after the vehicle is delivered.

[0008]

By the way, recent automobiles use many microcomputers in the control system,
Since it is designed so that the vehicle can be driven finely and without waste of fuel consumption, the number of power supply points is increased, and the number of fuses arranged in the middle of the power supply must be increased. For this reason, the external dimensions of the flat fuse are also reduced, and a shape or mechanism that is changed due to the reduction in size is also possible.

In the invention described above, since the metal plate is bent to cover the electrode plate portion and the case portion of the flat fuse, either the size or the shape of the flat fuse can be used. If they are different, it means that they cannot be used as they are. Therefore, in the present invention,
Basically, the technology of the previous application is followed, and an attempt is made to provide a vehicle power supply branching device capable of coping with recent small fuses.

[0010]

According to a first aspect of the present invention, the electrode plate has a tip portion, and the other portions are made of synthetic resin.
Vehicles to be mounted on a flat fuse covered with a flat case
In the power supply branch device for vehicle , the power supply branch device for the vehicle is one
It is made of metal plate, and its central part is bent into a U shape.
Then, cover the bent portion with the tip of the electrode plate of the flat fuse.
There is no concave part, and both sides of the bending part are lined up with the electrode plate.
To the outer circumference of both sides of the case.
And both ends are polymerized at the top of the case.
And at least the part that covers the outer circumference of both sides of the case
Extend one side and bend it so that it faces each other, and
The flat type is formed on the stopper that closely contacts the side of the case.
Replace one electrode plate part of the fuse and the case part
While covering, on the outer periphery of both sides of the metal plate case,
Provided on the fuse box side where the flat fuse is inserted.
A long hole for escaping the insertion guide projection
Is a power supply branching device for a vehicle, characterized in that the tip of the covered electric wire is connected to a part of the above.

The invention described in claim 2 is the same as that of claim 1.
In the described invention, the metal plate is
From the bottom of both sides of the electrode plate in the flat fuse
Form a trapezoid that gradually widens in accordance with the part, and
Wider than the width of the flat fuse electrode plate in all areas
It is a power supply branching device for a vehicle, which is characterized by being formed as follows.

The invention described in claim 3 is the same as that of claim 1.
In the described invention, the substantially central portion of one metal plate is
It is refracted in a U shape, and the refracted portion is formed into an electrode of the flat fuse.
Do not form a part that covers the tip of the plate,
The refractor is bent so that it sticks to the outer circumference on both sides of the case.
And both ends are polymerized at the top of the case.
, A small hole is formed in the plate above the overlapping portion, and the small hole is formed.
The tip of the covered electric wire on the overlapping portion of the top including the installed portion.
Is a power supply branching device for a vehicle, in which is connected by soldering .

[0013]

[0014]

According to the invention described in claim 1, since the projection for insertion guide provided on the fuse box side can be escaped by the long hole provided in the metal plate, the projection is not obstructed. The flat fuse and the branching device fitted around the flat fuse can be easily inserted into the fuse box. Also, a part that covers at least the outer circumference of both sides of the case
Formed by extending one side and bending it to face each other
When the stopper attaches the branching device to the flat fuse,
Since it is regulated so that it does not move more than necessary, a flat type
Fuse with a flat shape without unevenness on the side
Can be easily and correctly fitted.
I will be able to do it.

According to the invention described in claim 2, the size is small.
The electrode shape of the flat fuse in the direction from the bottom to the top
Therefore, following the trapezoidal shape that gradually widens,
By adopting a different shape, it fits into a flat pattern fuse and
Together with the fuse box electrodes
The work becomes significantly easier. Also, in all parts
Type fuse is wider than the electrode plate.
Changes the attitude towards the flat fuse
Always contact with all parts of the flat fuse electrode plate
Can be maintained.

According to the invention described in claim 3, both ends
The weight of a metal plate with parts overlapped on the top of the case
By forming a small hole in the upper plate of the mating part, that part
When connecting the tip of the covered wire by soldering,
Part of the melted solder flows from the small holes to the surface of the lower plate.
Ensures binding of polymerized moieties.

[0017]

[0018]

An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is a flat fuse, and two electrode plates 2 and 2 are arranged such that their respective surfaces are located on the same plane, and
A fuse wire 3 bent in a U-shape is connected between them, and the other ends are covered with a flat case 4 made of synthetic resin while leaving the tip portions of the electrode plates 2 and 2. is there.

This flat fuse 1 is inserted from the electrode plate 2 side into a hole 6 of a fuse box 5 shown in FIG. 2 in plan view, and the electrode plate 2 contacts an unillustrated receiving side terminal in the hole 6. is there. As shown in FIG. 2, the holes 6 are provided with inward projections (projections extending in the depth direction of the holes 6), and the flat fuse 1 correspondingly is shown in FIG. Thus, the concave portion 8 is formed. The projection 7 and the recess 8 are fitted together when the flat fuse 1 is inserted into the hole 6 to prevent the flat fuse 1 from falling down and guide the flat fuse 1 so that it is inserted in a correct posture.

FIG. 3 shows a vehicle power supply branch device (hereinafter referred to as a branch device) 9 according to the present invention. This branching device 9 is made of a plastically deformable material and has a thin metal plate 10 whose developed shape is as shown in FIG.
It is bent into the same shape as the side surface of the above, and is formed into an annular body that closely covers the tip portion of one electrode plate 2 and the outer peripheral portion of the case 4, and the portion of the wire 12 of the electric wire 11 is connected to the overlapped top portion. It is a thing. When the metal plate 10 is bent,
All parts are formed to have a width slightly wider than the width of the electrode plate 2. Reference numeral 13 is a coating of synthetic resin. Metal plate 1
Although 0 was a phosphor bronze thin plate having a thickness of 0.1 mm in the examples, other materials such as brass and gold-plated brass may be used as long as the thickness is in the range of 0.03 mm to 0.12 mm. good.

As shown in FIG. 1, the electrode plate 2 of the flat fuse 1 is formed in a trapezoidal shape which gradually widens from the lower part to the upper part, as indicated by reference numeral 2a. Figure 3
The shape of the lower part of the branching device 9 shown in FIG. 3 is also inclined as indicated by the reference numeral 10a, and the upper part thereof is also formed as much larger obliquely as indicated by the reference numeral 10b. The slanted shape of the lower part significantly facilitates the work when it is fitted into the flat fuse 1 and is inserted therewith into the hole 6 of the fuse box 5. Further, due to the oblique shape of the upper portion, the area of the upper portion can be increased without being affected by the insertion portion of the fuse box 5 into the hole 6, so that the strength is increased.

The branching device 9 is formed so as to be wider than the width of the electrode plate 2 of the flat fuse 1 in all parts. As a result, even if the posture of the flat fuse 1 is changed to some extent, the contact with the entire portion of the electrode plate 2 of the flat fuse 1 can be maintained at all times, so that the current capacity does not decrease.

In the branching device 9, as shown in FIGS. 4 and 5, the metal plate 10 has a step portion 10c in the middle portion thereof, and the electrode plate 2 of the flat fuse 1 is sandwiched between the metal plates 10 with a narrow space between them. The case 4 is sandwiched by the expanded upper part. By the way, the flat fuse 1 has the concave portion 8 as described above.
Are formed so that the projections 7 formed in the holes 6 of the fuse box 5 can escape in the recesses 8. For this reason,
Even in the portion above the step portion 10c of the metal plate 10, the elongated hole 10d for escaping the protrusion 7 at the same position as the concave portion 8 of the flat fuse 1.
Are formed. Due to the elongated hole 10d, the elongated hole 10d can be inserted into the hole 6 of the fuse box 5 without being affected by the protrusion 7.

As shown by reference numerals 10e and 10f in FIG.
A part of the metal plate 10 of the branching device 9 is projected laterally, and it is formed so as to face both sides of the case 4 of the flat fuse 1 so as to face each other as shown in FIGS. 3 and 5. There is. When the branching device 9 is attached to the flat fuse 1 from the left side in FIG. 1, the bent extension portions 10e and 10f hit the side portion of the case 4 to regulate the movement amount of the stopper 14 when the attachment is performed. To form.

As described above, the wire 12 of the electric wire 11 is connected to the superposed top portion of the metal plate 10. The plate above the superposed portion is arranged so that the solder for this connection flows between the superposed portions. A small hole 15 is formed in the hole (see FIGS. 3 and 4).
reference). As a result, the melted solder passes through the small holes 15 and enters between the superposed portions to ensure the joining of these portions. After connecting the electric wire 11, an insulating material is applied to the surface of the connecting portion. Any material may be used as the insulating material, but a material that is liquid or gel at the time of application and hardens after application is convenient for use. Liquid rubber or the like can be considered as an example, but other materials may be used. In the case of liquid rubber, the appearance is improved by making the color the same as the covering portion of the electric wire 11.

The branching device 9 thus manufactured is fitted to the outer periphery of the flat fuse 1. The size and size of the branching device 9 are such that one electrode plate 2 and the case 4 of the flat fuse 1 are wound around the ring in close contact with the outer periphery of the case, so that the branching device 9 can be arranged as shown in FIG. 1 can be slid from the left side and fitted. Unlike the flat fuse according to the previous application, this branch device 9 has a stopper 14
Since the flat fuse 1 is formed, it can be positioned by moving the stopper 14 until the side of the flat fuse 1 comes into contact.

FIG. 6 shows the flat fuse 1 fitted with the branching device 9 in this manner. In this state, the flat fuse 1 together with the branching device 9 is inserted into the hole 6 (see FIG. 2) of the fuse box 5. This allows
One electrode plate 2 is directly inserted into the receiving side electrode, and the other electrode plate 2 is inserted into the receiving side electrode via the folded plate thickness of the metal plate 10 of the branching device 9. As described above, the metal plate 10
Is sufficiently thin that it does not cause any inconvenience when it is inserted into the receiving electrode.

Since the electric wire 11 is connected to the electrode 2 by mounting the branching device 9 on the flat fuse 1, the desired electric load can be supplied from here. In addition, in actual use, it is preferable to connect a fuse in the middle of the electric wire 11 in order to avoid the influence of a short-circuit accident on the load side.

[0029]

Since the present invention is a vehicle power supply branching device configured as described above, it is mounted on a flat fuse as in the previously filed application, and this is attached to the receiving side electrode of the fuse box. Easy installation by simply inserting into
This makes it easy to supply power to the electric load. Then, in this case, the influence of the projection on the fuse box side can be avoided by the elongated hole provided in a part, and the positioning is properly performed by the stopper.

Since the branching device has a trapezoidal shape that gradually widens from the bottom to the top, and is formed to be wider than the electrode plate of the flattened fuse in all parts, Even if the posture changes a little, it is possible to always maintain the contact with the whole part of the electrode plate of the flat fuse. By forming a small hole in the upper plate of the overlapping part of the metal plate, when the tip of the covered electric wire is connected to that part by soldering, part of the melted solder will pass from the small hole to the surface of the lower plate. Ensures binding of flow-through polymerized moieties.

[Brief description of drawings]

FIG. 1 is a perspective view of a flat fuse in which a branching device according to the present invention is fitted.

FIG. 2 is a plan view showing a hole shape of a fuse box.

FIG. 3 is a perspective view of a branching device according to the present invention and an electric wire connected to the branching device.

FIG. 4 is a front view showing a metal plate forming the branching device of FIG. 3 in a developed state.

5 is a side view of the branching device shown in FIG. 3 viewed from the stopper side.

FIG. 6 is a perspective view showing a branch device fitted to a flat fuse.

[Explanation of symbols]

1 Flat fuse 2 electrode plate 4 cases 5 fuse box 6 holes 7 protrusions 9 branching device 10 metal plate 10d long hole 11 electric wires 14 Stopper 15 small holes

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-8-11652 (JP, A) Actual flat 4-61886 (JP, U) Actual flat 4-43866 (JP, U) Actual flat 3- 116646 (JP, U) Actual development 62-138658 (JP, U) Actual development 60-136484 (JP, U) Actual development 60-51739 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H01H 85/02 H01H 85/22 B60R 16/02

Claims (3)

(57) [Claims] 1. A synthetic resin is used except for the tip of the electrode plate.
Used by attaching to a flat fuse covered with a flat case made of
A power supply branching device for a vehicle , comprising :
Is made of a single metal plate, and its central portion is U-shaped
Refraction, and the refraction portion is the tip of the electrode plate of the flat fuse.
And the electrode plate on both sides of the refraction portion.
Bend to fit the outer edges of both sides of the case.
And both ends are polymerized at the top of the case.
And the part that covers at least the outer circumference of both sides of the case
One side is extended and refracted to face each other,
The stopper is formed on the side of the case,
Type electrode plate part and case part of type fuse
Cover the metal plate case on both sides,
Provided on the fuse box side where a flat fuse is inserted
A long hole that escapes the projection for insertion guide
A power supply branching device for a vehicle, wherein a tip of a covered electric wire is connected to a part of a plate . Wherein the shape of the metal plate, from bottom to top of both sides of the electrode plate in the flat-type fuses from the power portion
The power supply branching device for a vehicle according to claim 1, wherein the power supply branching device for a vehicle according to claim 1, wherein the power supply branching device is formed in a trapezoidal shape that gradually widens, and is formed so as to be wider than an electrode plate of the flat fuse in all portions. 3. A substantially central portion of one metal plate is bent in a U-shape, the bent portion is a portion for covering the tip of the electrode plate of the flat fuse, and both sides of the bent portion are electrode plates and It is refracted so as to be closely adhered to the outer peripheries of both sides of the case, both end portions are polymerized at the top of the case, and a small hole is bored in a plate above the overlapped portion, and the top portion including the bored portion of the small hole. 2. The vehicle power supply branching device according to claim 1, wherein the tip of the covered electric wire is connected to the overlapping portion of the vehicle by soldering.