JP4768509B2 - Fuse mounting method and electrical junction box - Google Patents

Description

The present invention relates to a method and an electrical junction box for mounting a fuse to a fuse box mainly used in an electrical junction box mounted as an electrical component of an automobile.

  Conventionally, as a fuse box mounted mainly as an electric part of an automobile, as shown in FIG. 10, a fuse housing provided with a plurality of fuse mounting portions 101 provided with a female terminal (not shown) in a part of the electric connection box 100 102, and a blade-type fuse 103 is attached to each fuse attachment portion 101. The electrical junction box 100 includes a circuit conductor that conducts to a relay, a fuse 103, and the like, and includes a connector, a terminal, and the like (not shown) for connecting to an external wiring.

  When the fuses 103 are mounted on the fuse mounting portions 101 of the electrical connection box 100 having such a configuration, as shown in FIG. 11, the fuses 103 are arranged in each fuse mounting portion 101 and then collectively using an insertion jig or the like. It has been mounted by being inserted so as to be electrically connected to the female terminal in the fuse mounting portion 101. Then, as shown in FIG. 12, the fuse cover 104 is attached so as to be fitted to the outer periphery of the fuse housing 102, and the label 105 is affixed to the outer surface 104 a of the fuse cover 104, thereby completing the fuse installation work.

The above-described fuse mounting method requires an expensive automatic fuse insertion machine in the assembly process (fuse mounting process) of the electrical junction box, and it is necessary to inspect erroneous insertion with an expensive image processing apparatus after assembly. It was. In order to solve such a problem, a fuse box as in Patent Documents 1 and 2 has been proposed. In any of the fuse boxes described in Patent Documents 1 and 2, the fuse housing can be installed by dividing the fuse housing into two parts and holding the fuses on one side and fitting them on the other side having the fuse connection terminals and the like. It has become.
Japanese Patent Laid-Open No. 5-205609 JP-A-5-217490

  In the fuse box described in Patent Documents 1 and 2 described above, the fuse housing is divided into two parts. Therefore, a fuse housing having a completely different shape from the conventional one must be created. Costs may increase due to changes or the creation of new fuse housings. Further, there is a problem that the fuse housing is divided and becomes unstable in strength.

Accordingly, the present invention focuses on the above-described problems, and an object thereof is to provide a fuse mounting method and an electrical junction box that do not cause erroneous insertion without using expensive equipment or an inspection device. .

The invention according to claim 1, which has been made to solve the above problem, includes a first step of holding a fuse in each of the plurality of fuse holding portions of a fuse cover having a plurality of fuse holding portions, and A second step of fitting the fuse cover held in the fuse holding portion into a fuse housing provided with a plurality of fuse mounting portions having connection terminals for electrically connecting the fuse cover to the fuse; And a third step of inserting into the fuse mounting portion to make an electrical connection to the connection terminal.

  According to a second aspect of the present invention, in the first step, the plurality of fuses are respectively held by the fuse holding portions at predetermined positions of the fuse cover. The method is to install a fuse.

  A third aspect of the invention resides in the fuse mounting method according to the first or second aspect, further comprising a fourth step of attaching a label to the fuse cover after the third step.

The invention according to claim 4 is a fuse , a fuse housing in which a plurality of fuse mounting portions to which the fuse is mounted so as to be electrically conductive are formed, a fuse cover formed so as to be matable with the fuse housing, The fuse cover includes a fuse holding portion in which a through hole capable of holding the fuse on the inner surface through the fuse is provided at a position corresponding to the fuse mounting portion. An electrical connection box, wherein when the fuse is mounted on the fuse mounting portion and becomes electrically conductive, the holding of the fuse is released and a predetermined gap is provided between the fuse and the fuse. Exist.

As described above, according to the first aspect of the present invention, the fuse cover is held with a plurality of fuses and then fitted into the fuse housing, and each fuse is inserted into the corresponding fuse mounting portion by the insertion jig. In other words, since a plurality of fuses can be held in the fuse cover in advance and can be simultaneously mounted on the fuse mounting portion, an expensive automatic fuse insertion machine and inspection equipment are not required, and only an inexpensive insertion machine can be used. . Further, since the fuse is held in the fuse cover, a carrier for conveying the fuse or the like becomes unnecessary.

  According to the second aspect of the invention, since the fuse is held in the fuse holding portion at a predetermined position of the fuse cover, the step of holding the fuse in the fuse cover in another place is performed in advance, If the held fuse cover is handled as one component, the fuse arrangement can be managed before the fuse mounting process, so that erroneous insertion does not occur in the fuse mounting process.

  According to invention of Claim 3, it can be set as the same external appearance by sticking a label to a fuse cover.

According to the fourth aspect of the present invention, the fuse cover has a through hole through which the fuse can be held on the inner surface as a fuse holding portion, so that the fuse is removed from the fuse cover except when the fuse is inserted into the fuse insertion portion. It can be held so as not to come off. In addition, when the fuse is removed from the hole of the fuse cover and released, and inserted into the fuse mounting portion and electrically connected to the connection terminal in the fuse mounting portion, the fuse cover and the fuse have a predetermined size. The gap can be secured and the fuse can dissipate heat .

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 9 are explanatory views showing an embodiment of the present invention. First, the fuse 2 is held in the fuse cover 1 as a first step.

  As shown in FIG. 1, the fuse cover is formed of an insulating synthetic resin material or the like in a box shape, and a hole 1b as a fuse holding portion is provided on the surface portion 1a. The hole 1b is provided at a position corresponding to a fuse mounting portion 3 provided in a fuse housing 4 described later.

  As shown in FIG. 2, the fuse 2 has a pair of terminals 2a joined by a fusible member (not shown) and covered with an exterior portion 2b made of an insulator. In the present embodiment, a low-profile fuse is used. However, the present invention is not limited to this, and any fuse (blade type or the like) having a pair of terminals on one side of the fuse can be applied.

  The fuse 2 described above is held through the hole 1b of the fuse cover 1 as shown in FIGS. The fuse 2 is held in a plurality of holes 1b are determined whether to hold the fuse what characteristics in advance which hole 1b (such as capacitance of the current), and holds the plurality of fuses 2 in accordance with the sequence. 3 is a view of FIG. 2 as viewed from the rear. As shown in FIGS. 2 and 3, the inner surface of the hole 1 b is approximately the same size as the outer surface of the fuse 2, that is, a size that can hold the exterior portion 2 b of the fuse 2.

  Next, as a second step, the fuse cover 1 holding the fuse 2 in the first step is fitted into the fuse housing 4 of the electrical junction box 10.

  The electrical junction box 10 includes a circuit conductor that is electrically connected to a relay, a fuse 2 and the like (not shown) inside, and a connector and a terminal (not shown) for connecting to an external wiring.

  As shown in FIG. 4, the fuse housing 4 is provided on the outer surface of the electrical connection box 10 and is formed into a box shape by an insulating synthetic resin material or the like, and a plurality of fuse mounting portions 3 are provided in the opening.

  The fuse mounting part 3 is a hole formed in a rectangular shape, and a connection terminal for the fuse 2 (not shown) is provided inside. When the fuse 2 is attached, the terminal 2a of the fuse 2 and the connection terminal are in an electrically conductive state.

  The fuse cover 1 holding the fuse 2 in the first step is fitted into the fuse housing 4 having the above-described configuration as shown in FIG. FIG. 5 is a view showing a state in which the fuse cover 1 is fitted to the fuse housing 4. When the fuse cover 1 is fitted into the fuse housing, the plurality of fuses 2 are inserted into the corresponding fuse mounting portions 3 respectively. It is not in a proper state. As shown in FIG. 5, the outer periphery of the fuse housing 4 is formed to have substantially the same size as the inner periphery of the fuse cover 1 so that the fuse cover 1 can be fitted.

  Next, as shown in FIGS. 6 to 8, as shown in FIGS. 6 to 8, the outer cover 2 b of the fuse 2 is pressed by the insertion jig 5 with the fuse cover 1 holding the fuse 2 fitted in the fuse housing 4. Is inserted into the fuse mounting portion 3. 6 is a cross-sectional view taken along the line II of FIG. 5, FIG. 7 is a view showing a state where the fuse 2 is inserted into the fuse mounting portion 3, and FIG. 8 is a cross-sectional view taken along the line II-II of FIG. is there.

  As shown in FIG. 6, the insertion jig 5 includes insertion portions 5a having positions and numbers corresponding to the fuses 2, and fixing portions 5b for fixing the insertion portions 5a.

  When the fuse 2 is pressed in the direction of the arrow X by the insertion jig 5, the fuse 2 is released from the hole 1b of the fuse cover 1 and is inserted into the fuse mounting portion 3 as shown in FIGS. It is in a state where it can be electrically connected to the connection terminal in the fuse mounting portion 3. At this time, since the fitting position of the fuse cover 1 does not change, a gap of a predetermined size required for fuse heat radiation can be secured between the fuse cover 1 and the fuse 2.

  Next, as a fourth step, a label 6 is affixed to the surface portion 1a of the fuse cover 1 as shown in FIG. By attaching the label 6, the hole 1b of the fuse cover 1 can be closed.

  According to the above fuse mounting method, the fuse 2 is held in the hole 1 b of the fuse cover 1, the fuse cover 1 holding the fuse 2 is fitted into the fuse housing 4, and the fuse 2 is inserted by the insertion jig 5. The fuse is mounted by removing it from the hole 1 b of the fuse cover 1 and inserting it into the fuse mounting portion 3. Then, a label 6 is pasted on the surface portion 1 a of the fuse cover 1. By doing as described above, an expensive automatic fuse insertion machine and inspection equipment are not required, and only an inexpensive insertion jig 5 can be used.

  In addition, since the fuse 2 is held in the hole 1b at a predetermined position of the fuse cover 1, for example, a process of holding the fuse 2 on the fuse cover 1 in another place in advance is performed, and the fuse 2 is held in the fuse mounting process. If the fuse cover 1 is handled as one component, the arrangement of the fuses 2 can be managed before the fuse mounting process, so that erroneous insertion in the process of mounting the fuse 2 does not occur. Therefore, expensive inspection equipment is not required.

  Further, since the fuse 2 is held in the fuse cover 1, a carrier for conveying the fuse or the like becomes unnecessary.

  Furthermore, the fuse housing 4 may remain in the same shape as the conventional one, and there is no need to change the fitting structure with the fuse cover 1. Since only the fuse cover 1 is changed, the changed portion can be small. And if the label 6 is affixed on the outer surface of the fuse cover 1, it can be set as the external appearance.

  In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.

It is a perspective view of a fuse cover showing one embodiment of the present invention. FIG. 2 is a perspective view showing a state in which a fuse is held in a fuse cover shown in FIG. 1. It is the perspective view which looked at the state shown in FIG. 2 from back. FIG. 4 is a perspective view when the fuse cover in the state shown in FIGS. 2 and 3 is fitted to the fuse housing. FIG. 4 is a perspective view showing a state in which the fuse cover in the state shown in FIGS. 2 and 3 is fitted to the fuse housing. It is sectional drawing which follows the II line | wire of FIG. It is a perspective view which shows the state which inserted the fuse in the fuse mounting part. It is sectional drawing which follows the II-II line of FIG. It is a perspective view in the state where a label was stuck on the fuse cover. It is a perspective view of the fuse mounting method in a prior art. It is a perspective view which shows the state in which the fuse in a prior art was inserted in the fuse mounting part. It is a perspective view which shows the state which attached the fuse cover in a prior art, and affixed the label.

Explanation of symbols

1 Fuse cover 1b hole (fuse holding part)
2 Fuse 3 Fuse mounting part 4 Fuse housing 5 Insertion jig 6 Label 10 Electrical junction box

Claims (4)

A first step of holding a fuse in each of the plurality of fuse holding portions of a fuse cover having a plurality of fuse holding portions;
A second step of fitting the fuse cover in a state where the fuse is held in the fuse holding portion to a fuse housing provided with a plurality of fuse mounting portions each having a connection terminal for electrically connecting the fuse cover to the fuse; ,
A third step of inserting the fuse into the fuse mounting portion for electrical connection to the connection terminal;
A fuse mounting method characterized by comprising:   2. The fuse mounting method according to claim 1, wherein in the first step, the plurality of fuses are respectively held by the fuse holding portions at predetermined positions of the fuse cover.   The fuse mounting method according to claim 1, further comprising a fourth step of attaching a label to the fuse cover after the third step. In an electrical junction box, comprising: a fuse, a fuse housing in which a plurality of fuse mounting portions on which the fuse is mounted to be electrically conductive are formed, and a fuse cover formed so as to be able to be fitted to the fuse housing.
The fuse cover includes a fuse holding portion in which through holes capable of holding the fuse on the inner surface through the fuse are provided at positions corresponding to the fuse mounting portion, and the fuse is mounted on the fuse mounting portion. The electrical junction box, wherein when the electrical connection is enabled, the holding of the fuse is released and a predetermined gap is provided between the fuse and the fuse .

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