JP2573677Y2 - Fuse box - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuse box mounted in an automobile or the like, and has a terminal accommodating chamber suitable for inserting a plurality of continuous electrical connectors of the same power supply circuit connected to a fuse. Things.

[0002]

2. Description of the Related Art In a fuse box used in an automobile or the like, as shown in FIG. 3, a terminal accommodating chamber 2 is formed in a housing 1 at a constant pitch A and pitch B in a horizontal direction and a vertical direction, respectively. Each fuse 3 is inserted into the terminal accommodating chamber 2 from one end opening. That is, the fuse 3 protruding from the pair of upper and lower electric connection tabs 3a, 3b.
The upper tab 3a is inserted into the upper terminal accommodating chamber 2a, and the lower tab 3b is inserted into the lower terminal accommodating chamber 2b. ing. The electric connector 5 connected to the fuse 3 is inserted and mounted from the other end opening of the terminal accommodating chamber 2. In the case of the same power supply circuit, one electric connector 5 A is connected to the power source 7 through the electric wire 6. The electrical connector 5A and the other electrical connectors 5B and 5C are connected to each other via a connection piece 8 that short-circuits (conductive) each other.

[0003] As the connecting piece 8, as shown in the drawing, a carrier having one end of a parallel wire connector 5 is used. The electrical connectors are formed in a parallel state by punching a metal plate with a press machine and bending the punched and unfolded one. As shown in FIG. 4, the electrical connectors 5 are formed in parallel. The ends on the wire connection side are connected by a carrier 10. As described above, when a carrier is used as the connecting piece 8 that connects the electrical connectors 5A, 5B, and 5C of the same power supply circuit connected to the fuse 3 to each other, the pitch of the electrical connectors 5 connected by the carrier 10 is set as described above. It is necessary to match the pitch A of the terminal accommodating chamber 2.

However, since the electric connector is formed by bending from the expanded state as described above, the length of the carrier 10 between the adjacent electric connectors 5 is relatively limited due to the restriction by the expanded shape. large. On the other hand, the pitch A of the terminal accommodating chamber 2 of the fuse box is set relatively small due to a demand for miniaturization and the like. Therefore, the pitch B of the electric connectors 5 connected by the carrier 10 is larger than the pitch A of the terminal housing 2.

Therefore, as shown in FIGS. 5A and 5B, the carrier 10 between the adjacent electric connectors serving as the connecting piece 8 is formed.
Is bent to form a step 10a, and the carrier 10
And the pitch B ′ of the electrical connector 5 is reduced to the pitch A
To match.

[0006]

According to the circuit design, two electrical connectors 5 connected by a carrier connected to the fuse are connected to two electrical connectors 5 by a connecting piece 8 comprising a carrier 10. Alternatively, it is composed of three stations or the like, so that it is cut at the portion of the carrier 10 from the state of being connected by the carrier 10 having the step portion 10a shown in FIG.
It is necessary to set the state shown in FIG.

As shown in FIG. 6, in order to cut at the portion of the carrier 10 provided with the step 10a, a holder 11 of a cutter for a crimping die is inserted into a lower portion of the step 10a and arranged above. The slide cutter 12 is lowered and cut.

Accordingly, the structure of the crimping die becomes complicated, and if the position of the step portion 10a and the holder 11 are slightly displaced, the carrier 8 is pushed forward when the holder 11 is inserted, causing crimping displacement. There was a problem that defective products were likely to appear. Further, when the height of the step portion 10a is increased and the pitch B 'is reduced, the width W of the step portion 10a is also reduced, and there is a problem that the width of the cutter holder 11 of the mold is restricted.

Further, the number of steps for bending the carrier 10 is increased, and the bent step portion is liable to be expanded and contracted in the horizontal opening direction.
Warpage in the left-right direction is also likely to occur, and there is a problem in strength.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problem, and does not adjust the pitch of the electric connector side connected by the carrier, but adjusts the pitch of the terminal accommodating chamber formed in the fuse box by the electric connector. This is to solve the above-mentioned problem caused by bending at the carrier portion so as to match the pitch of the carrier.

[0011]

That is, according to the present invention, a pair of upper and lower terminal accommodating chambers accommodating a pair of electric connection tabs of a fuse are defined as one unit. Form a plurality side by side in the box,
A plurality of fuses are inserted into the corresponding terminal accommodating chamber units from the first side of the box, while
A fuse box for connecting a fuse and an electrical connector by inserting a plurality of electrical connectors of a chain-like electrical connector into a plurality of terminal accommodating chamber units from a second side opposite to the side. The plurality of terminal accommodating chamber units arranged in the lateral direction are arranged so that the terminal accommodating chambers of adjacent terminal accommodating chamber units do not have the same height position. A room unit and a second terminal accommodating room unit at a second height position of the box are alternately formed, a first unit group including the first terminal accommodating room unit, and a second terminal A configuration in which a plurality of electrical connectors of a chain-like electrical connector in which the coupling piece is a flat plate shape and the coupling piece and the electrical connector are on the same plane is respectively inserted into the second unit group including the accommodation room units. Hugh characterized by · Provides a box. Also,
3. The first box of the box, wherein a pair of upper and lower terminal housing chambers accommodating a pair of electrical connection tabs of the fuse are formed as one unit, and a plurality of the terminal housing chamber units are laterally arranged in the box. A plurality of fuses are inserted into corresponding terminal accommodating chamber units from the side surface, and a plurality of electrical connectors of the chain-like electrical connector are connected to the plurality of terminals from the second side opposite to the first side of the box. The fuse that is inserted into the accommodation unit and connects the fuse and the electrical connector
A first box having a fuse insertion opening formed in a first end surface of the box, wherein the plurality of terminal housing units arranged in the lateral direction have different lengths of terminal housings of adjacent terminal housing units. And a second terminal accommodating chamber unit in which a fuse insertion port is formed in a second end face of the box deeper than the first end face of the box is alternately formed. A first unit group consisting of chamber units and a second unit group consisting of second terminal accommodating chamber units, each of which has a connecting piece in a flat plate shape and a connecting piece and an electrical connector in the same plane. The present invention provides a fuse box having a configuration in which a plurality of electrical connectors of a child are inserted.

The interval between the pair of tabs of the fuse is set in the direction orthogonal to the installation direction of the juxtaposed terminal accommodating chambers in accordance with the pitch of the electric connectors connected via the flat carrier. Needless to say, the terminal accommodating chambers are formed at an interval.

The terminal housings arranged side by side are formed such that adjacent terminal housings are shifted in the axial direction or the direction orthogonal to the axis, that is, in the vertical direction of the box or in the front-back direction of the box, and are formed one by one on the same line. The electric connector connected by the connecting piece made of the carrier is inserted into the terminal accommodating chamber formed one by one on the same line, and interferes with the carrier of the electric connector inserted into the adjacent terminal accommodating chamber. It is not arranged. That is, since the carrier of the chain-like electrical connector is not bent and remains in a flat plate shape, the pitch of the electrical connector is a large pitch. The terminal receiving chambers are formed at intervals on the housing side of the box, and there is a problem that the size of the housing is increased. To solve the problem, as described above, between adjacent terminal accommodating chambers matched with the pitch of the electrical connectors, terminal accommodating chambers shifted in the vertical direction of the box or in the front-rear direction of the box are formed, and are arranged in parallel. The electrical connectors connected by carriers are inserted one by one into the terminal receiving chamber, and the electrical connectors inserted into the adjacent terminal receiving chamber and the connected carriers are arranged so as not to be in contact with each other. The size of the housing is prevented from increasing.

[0014]

As described above, since the pitch of the terminal accommodating chamber is formed in accordance with the pitch of the chain-like electrical connectors, it is not necessary to adjust the pitch by bending the carrier between the electrical connectors. Therefore, leaving the carrier in a flat state,
The cutting can be performed at the flat plate portion, and a problem that occurs when cutting is performed at a step portion bent as in the related art can be eliminated.
Further, since the carrier portion is not bent, the number of steps can be reduced, and strength problems such as elongation, contraction, and warpage occurring in the bent portion do not occur.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to embodiments shown in the drawings. In the first embodiment shown in FIG. 1, the terminal accommodating chambers 21 formed in the fuse box 20 are arranged such that the terminal accommodating chambers 21 arranged side by side are arranged in the vertical direction of the box (a direction orthogonal to the axial direction of the terminal accommodating chambers). Are alternately shifted. That is, first, the terminal accommodating chambers 21a, 21b, and 21c are formed at a pitch S of 2A at the position S1 of the uppermost first stage. A position S2 of the second stage below the first stage vertically displaced from the first stage, a position between the terminal housings 21 of the first stage, that is, a terminal housing 21d between 21a and 21b. A terminal 21f is formed between 21b and 21c outside of 21e and 21c.
The pitch of e and 21f is also 2A.

A third-stage position S3, which is vertically displaced from the second-stage terminal housing chamber 21, is located on the same vertical axis as the first-stage terminal housing chamber 21a '. , 21b ',
21c 'is formed, and the terminal housing chamber 21d', 21d ', is located on the same vertical axis as the terminal housing chamber of the second stage at a lower position S4 of the fourth stage lower than the position of the third stage. 21e 'and 21f' are formed.

The pitch B between the first and third terminal housings is such that the upper tab 3a of the fuse 3 can be inserted into the first terminal housing and the lower tab 3b can be inserted into the third terminal housing. And the distance between the second and fourth stages is the same.

The distance for shifting the first and second stages in the vertical and vertical directions is such that the carriers 23 for interconnecting the electrical connectors 22 inserted in the first and second stage terminal accommodating chambers are connected in the vertical direction. The distance is set so that the positions are not shifted to each other. The distance between the second and third tiers and between the third and fourth tiers is also the same as the distance between the first and second tiers.

The pitch 2A of the terminal accommodating chambers 21a-21b-21c provided in parallel in the horizontal direction is equal to the pitch 2A of the electrical connectors 22 connected by the carrier 23 in the chain-like electrical connector 25 while the flat shape remains. It is the same.

As described above, the chain-shaped electric connector 25 is formed by punching a single metal plate, and then bending the developed portion of each electric connector to form a wire barrel 26, an insulation barrel 27 and an electric contact portion. 28, which are connected at a pitch of 2A by a flat carrier 23.

The above-mentioned chain-like electric connector 25 is used in accordance with the circuit design of the fuse box to be mounted, so that two electric connectors 22 are used consecutively or three electric connectors 22 are used consecutively. It is cut at the position of the carrier 23 at the position. Since the carrier 23 remains in a flat plate shape, it can be cut at this flat plate portion. Therefore, it is possible to eliminate the problem that occurs when cutting is performed at the bent carrier portion.

On the fuse box 20 side, 2
Since the terminal accommodating chambers 21 are formed at a pitch of 2A just by slightly displacing the terminal accommodating chambers 21 arranged at a pitch of A in the vertical direction, and the space is effectively used, the fuse box is The vertical direction is slightly longer than in the past, and does not increase much.

FIG. 2 shows a second embodiment of the present invention, in which terminal accommodating chambers 21d, 21 juxtaposed at a pitch of 2A are arranged between terminal accommodating chambers 21a, 21b, 21c juxtaposed at a pitch of 2A.
Although e and 21f are formed on the same horizontal axis, they are shifted in the axial direction of the terminal accommodating chamber, that is, in the front-back direction of the box. That is, as shown in FIG.
b and 21c are formed on the front F side of the fuse box 20 and formed in the terminal accommodating chambers 21d, 21e and 2c.
1f is formed by shifting to the rear R side, and the terminal accommodating chamber 21a,
The carrier 23 connecting the electrical connectors 22 inserted into the terminals 21b and 21c and the carrier 23 connecting the electrical connectors 22 inserted into the terminal accommodating chambers 21d, 21e and 21f are displaced in the front-rear direction and do not contact each other. It is arranged.

With the configuration of the second embodiment, the fuse box 20 is only slightly longer in the front-rear direction than the conventional one, and is not so large.

[0025]

As is apparent from the above description, according to the present invention, it is not necessary to bend the carrier portion of the chain-like electrical connector, so that the carrier can be cut at the flat carrier portion. Thus, the problem at the time of cutting that occurs when the bending process is performed can be solved. That is, since the cutting by the crimping die can be performed at the flat portion that is not bent, a complicated cutting mechanism is not complicated, and there is no need to insert a cutter holder into the bent step portion. For this reason, it is possible to prevent the occurrence of a defective product due to a displacement during crimping.

Further, when the carrier is bent in order to adjust the pitch, there is a problem in strength due to the occurrence of elongation, shrinkage, and warpage in the bent portion. Does not occur.

Further, the pitch of the terminal accommodating chambers on the fuse box side is set to be large so as to correspond to the pitch of the electric connectors in which the carrier remains in a flat plate shape. Since the terminal receiving chamber is set so that the carrier does not interfere with it, and the space is effectively used, the size of the fuse box side is not increased.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a second embodiment of the present invention.

FIG. 3 is a perspective view showing an electric connector attached to the fuse box.

FIG. 4 is a plan view of a conventional chain-shaped electric connector.

5 (A) is a plan view showing a state in which the chained electrical connector of FIG. 5 is bent, and FIG. 5 (B) is a perspective view.

FIG. 6 is a schematic diagram showing a conventional problem.

[Explanation of symbols]

1,20 Fuse box 2,21 (21a-21f, 21a'-21f ') Terminal accommodating chamber 3 Fuse 22 Electrical connector 23 Carrier 25 Chain electrical connector

Claims (2)

(57) [Scope of request for utility model registration] 1. A box comprising a pair of upper and lower terminal accommodating chambers accommodating a pair of electrical connection tabs of a fuse, and a plurality of the terminal accommodating chamber units are formed in the box in a lateral direction. A plurality of fuses are inserted into corresponding terminal accommodating chamber units from the side surface, and a plurality of electrical connectors of the chain-like electrical connector are connected to the plurality of terminals from the second side opposite to the first side of the box. A fuse box which is inserted into a housing unit to connect a fuse and an electrical connector, wherein the plurality of terminal housing units arranged in the lateral direction are adjacent terminal housing units of adjacent terminal housing units. The first terminal accommodating chamber units at the first height position of the box and the second terminal accommodating chamber units at the second height position of the box are alternately arranged so that the two are not at the same height position. Shall the a first unit group composed of the first terminal accommodating chamber unit, second of a second terminal accommodating chamber unit
A fuse box, wherein a plurality of electrical connectors of a chain-like electrical connector having a connecting piece and an electrical connector on the same plane are respectively inserted into the unit group. . 2. A box comprising a pair of upper and lower terminal accommodating chambers accommodating a pair of electrical connection tabs of a fuse, and a plurality of the terminal accommodating chamber units are formed in the box in a lateral direction. A plurality of fuses are inserted into corresponding terminal accommodating chamber units from the side surface, and a plurality of electrical connectors of the chain-like electrical connector are connected to the plurality of terminals from the second side opposite to the first side of the box. A fuse box which is inserted into a housing unit and connects a fuse and an electrical connector, wherein the plurality of terminal housing units arranged in the lateral direction are longer than the terminal housing of an adjacent terminal housing unit. The first terminal accommodating chamber unit has a fuse insertion opening formed on a first end surface of the box so that the fuse insertion opening is different from the first end receiving surface unit of the box. And the second terminal accommodating chamber units are alternately arranged, and a first unit group including the first terminal accommodating chamber unit and a second unit group including the second terminal accommodating chamber unit are provided. A fuse box, wherein a plurality of electrical connectors of a chain-like electrical connector in which the coupling piece and the electrical connector are in the same plane are respectively inserted.