JP2005135792A - Fuse unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fuse unit for enabling a state of a fuse of the fuse unit mounted on the side of a battery to be easily viewed when the fuse unit is stacked in a direction where it gets away from the battery. <P>SOLUTION: When a mounting part 20 is mounted to a battery post 12, a housing 30 is adapted to face to a side face 11a of the battery 11. At the same time, the mounting part 20 and a fuse body 40 included in the housing 30 are electrically connected to the battery 11, and a wire connection part 42 is formed in the housing 30 by interlaying a fusible part 41. This kind of fuse unit 10 can be stacked in a direction where it gets away from the battery 11, and the fusible part 41 is melted when an excessive current flows to cut off the current, whereby an electric apparatus is protected. Then, a fusible part 41a of the fuse unit 10 on the battery side does not overlap a fusible part 41b in front of it because the position of the fusible part 40 is different on the basis of each housing 30. Thereby, the fusible part 41a of the first fuse unit 10 is made easily visible as well. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a fuse unit, for example, a fuse unit connected to a battery of an automobile.

Conventionally, a fuse unit as shown in FIG. 11 has been disclosed (see, for example, Patent Document 1).
As shown in FIG. 11, the fuse unit 100 connects a battery 101 and a power supply electric wire 111, and includes a conductive metal plate-like fuse element 118 having fuses 114 and 116, and the fuse. The element 118 has an insulating resin body 117 formed by insert molding. The resin body 117 has a front divided body 113 and a rear divided body 115, and both the divided bodies 113 and 115 are bent at a right angle. A fuse 114 that connects the connecting portion 104 of the battery terminal 102 and the alternator terminal 107 is disposed in the front divided body 113. In the rear divided body 115, four fuses 116 are arranged in parallel, and four tab terminals 120 are formed at the tip (lower tip in FIG. 11).

  A battery terminal 102 is attached to a battery post 119 that is an electrode of the battery 101, and the fuse unit 100 engages the stud bolt 103 of the battery terminal 102 with the bolt insertion hole 104 a of the terminal connection portion 104 and tightens it with the nut 105. Connected. Further, the alternator terminal 106 and the starter motor terminal 107 are tightened and connected with a nut by engaging their insertion holes with stud bolts 110 protruding from the terminal connecting portions 108 and 109. The alternator terminal 106 and the starter motor terminal 107 are so-called terminals with electric wires, and the electric wires 111 are crimped and connected to a pair of crimping pieces 112. The fuse unit 100, the battery terminal 102, and the like are covered with a cover 121 from above to prevent entry of dust and moisture.

Therefore, when the fuse unit 100 is attached to the battery 101, the front divided body 113 is positioned horizontally on the upper surface of the battery 101, and the rear divided body 115 is vertically hung along the front surface 101a of the battery 101. .
Japanese Patent Laid-Open No. 2002-329457 (FIG. 9)

By the way, since the number of tab terminals 120 is insufficient, there are cases where two or more fuse units 100 are desired to be attached. In such a case, it is conceivable to arrange the fuse units 100 side by side along the side surface of the battery 101. In this case, the distance from the battery post 119 may be too long, or it may be difficult to arrange the fuse units 100 side by side from the viewpoint of space.
Therefore, it is conceivable that the fuse unit 100 is stacked and attached in a direction away from the battery 101.

  However, when the fuse unit 100 is stacked in a direction away from the battery 101, the state of the fuse 116 of the fuse unit 100 located in the foremost (upper side) can be visually recognized, but the fuse unit attached to the battery 101 side (lower side). The 100 fuses 116 are hidden behind the second fuse unit 100 and are not visible. For this reason, in order to check the state of the fuse 116, it takes time and effort, such as removing the fuse unit 116 attached to the front, or checking the fuse unit 116 after loosening the attachment, which is very troublesome. There's a problem.

  The present invention has been made in view of the above-described problems, and its purpose is to determine the state of the fusible portion of the fuse unit attached to the battery side when the fuse units are stacked in a direction away from the battery. Another object of the present invention is to provide a fuse unit that can be easily viewed.

  In order to achieve the above-described object, the present invention includes a mounting portion that is attached to a battery post of a battery and has an arm having a predetermined length, a housing that is bent at a right angle from the arm and faces the battery side surface, Has a fuse body which is electrically connected to the battery post and the other end is included in the housing and forms a wire connecting portion via a fusible portion, and is disposed in a cavity opened front and rear in the housing. The position of the fusible part is shifted for each housing, and when the housing is stacked in a direction away from the battery, each fusible part can be visually recognized from the front.

In the fuse unit configured as described above, when the attachment portion is attached to the battery post, the housing faces the side surface of the battery. At the same time, the attachment body and the fuse body contained in the housing are electrically connected to the battery, and the wire connection portion is formed in the housing via the fusible portion. Such a fuse unit can be stacked in a direction away from the battery, and when an excessive current flows, the fusible part melts to cut off the current and protect the electrical equipment. At this time, since the position of the fusible part is shifted for each housing, the fusible part of the fuse unit on the battery side does not overlap with the fusible part on the front side. For this reason, the soluble part of the fuse unit on the battery side can be easily visually recognized from the front.
Note that shifting the position of the fusible part is not only when changing the position of the fusible part as the shape of the fusible part provided with the fusible part is the same, but also by changing the shape of the fusible part itself. This includes the case where the position of the fusible body is changed and the position of the fusible body is changed.

  Further, the present invention is characterized in that the position of the soluble part in the soluble body disposed in the cavity including the soluble part is shifted.

  In the fuse unit configured as described above, the position of the fusible portion in the fusible body is shifted, so that the fusible portion of the fuse unit on the battery side and the fusible portion of the front fuse unit do not overlap. For this reason, the soluble part of the fuse unit on the battery side can be easily visually recognized from the front.

  Further, the present invention is characterized in that the soluble body disposed in the cavity including the soluble portion is shifted.

  In the fuse unit configured as described above, the position of the fusible part is shifted by shifting the position of the fusible body in the cavity. Therefore, the fusible part of the fuse unit on the battery side and the fusible part of the front fuse unit And do not overlap. For this reason, the soluble part of the fuse unit on the battery side can be easily visually recognized from the front.

  Further, the present invention is characterized in that the position of the cavity is shifted for each housing.

  In the fuse unit configured as described above, since the position of the cavity is shifted for each housing, the position of the fusible portion accommodated in the cavity is also shifted for each housing. For this reason, the fusible part of the fuse unit on the battery side does not overlap with the fusible part of the fuse unit on the front side, and the fusible part of the fuse unit on the battery side can be easily visually recognized from the front side.

  Further, the present invention is characterized in that the position of the housing is shifted.

  In the fuse unit configured as described above, since the mounting position of the housing is shifted, the position of the cavity is shifted for each housing, and the position of the fusible portion accommodated in the cavity is also shifted for each housing. For this reason, the fusible part of the fuse unit on the battery side does not overlap with the fusible part of the fuse unit on the front side, and the fusible part of the fuse unit on the battery side can be easily visually recognized from the front side.

  According to the present invention, since the position of the fusible part is different for each housing, the fusible part of the battery-side fuse unit and the fusible part of the front fuse unit do not overlap. For this reason, the soluble part of the fuse unit on the battery side can be easily visually recognized from the front.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments according to the present invention will be described in detail with reference to the drawings. 1 is an exploded perspective view showing a state in which a fuse unit according to the present invention is attached to a battery, FIG. 2 is a plan view of the fuse unit, FIG. 3 is a side view of the fuse unit, FIG. 4 is a front view of the fuse unit, and FIG. (A) is a front view showing a fuse on the battery side, (B) is a front view showing a front fuse, and (C) is a front view showing the shape of the fuse.

  FIG. 1 shows a case where two fuse units 10 a and 10 b according to the present invention are stacked in a direction away from the battery 11. Each of the fuse units 10a and 10b is attached to the battery post 12 as an electrode of the battery 11 and has mounting portions 20a and 20b having arms 21a and 21b having a predetermined length, and bent downward from the arms 21a and 21b at a right angle. The housing 30a, 30b facing the battery side surface 11a, one end of which is electrically connected to the battery post 12, and the other end is contained in the housing 30a, 30b and is a connector as a wire connecting portion via a soluble portion 41 And fuse bodies 40a and 40b forming 42.

  As shown in FIGS. 1 and 2, a battery terminal 13 is attached to the battery post 12. The stud bolt 13a of the battery terminal 13 includes a starter terminal 14a attached to the end of the starter wire 14 and a fuse unit 10a closest to the battery 11 (hereinafter referred to as "first fuse unit 10a"). The attaching part 20a is attached. One end of the fuse body 40a is exposed at the mounting portion 20a, and the fuse body 40a and the battery 11 are electrically connected by being fastened to the stud bolt 13a with a nut 15a.

In the mounting portion 20a of the first fuse unit 10a, two stud bolts 22a and 22b are provided on the upper surface of the fuse body 40. The stud bolt 22a is electrically connected with an alternator terminal 23a attached to the tip of an alternator electric wire 23 by a nut 15b. At the same time, the front fuse unit 10b (hereinafter referred to as “second fuse unit”). 10b ") is also secured with a nut 15b. In the mounting portion 20b of the second fuse unit 10b, the fuse body 40b is exposed and is electrically connected to the mounting portion 20a of the first fuse unit 10a. The stud bolt 22b is electrically connected to the battery post 12 via the fuse 23 so that a current exceeding a predetermined value does not flow.
Note that the cover 17 is attached to the mounting portion 20a and the stud bolts 22a and 22b from the upper side, preventing problems such as contact failure and short circuit due to adhesion of dust and moisture.

  As shown in FIGS. 1 and 3, the fuse bodies 40a and 40b are bent 90 degrees downward from the ends of the arms 21a and 21b of the mounting portions 20a and 20b, and are insulated so as to cover the fuse bodies 40a and 40b. Housings 30a and 30b made of resin are integrally formed. The length of the arms 21a and 21b, that is, the length from the attachment portion with the battery post 12 to the point where the arm 21a and 21b are bent down by 90 degrees is appropriately set depending on the thickness of the housings 30a and 30b. The lower ends of the housings 30a and 30b are opened, and the tips of the fuse bodies 40a and 40b are exposed in the openings to form a female connector 42. Therefore, by inserting the male connector 16 attached to the tip of the electric wire 15 connected to the electric device into the connector 42, electric power can be supplied.

FIG. 4 shows a front view of the first housing 30a and the second housing 30b. The first housing 30a is hidden behind the second housing 30b. The housing 30b is provided with a cavity 31 that is an internal space opened to the front surface. A fuse 43, which is a fusible body having a fusible portion 41, is provided at a position corresponding to the cavity 31 in the fuse main body 40b, and the battery 11 side and the connector 42 side of the fuse main body 40b are connected only through the fuse 43. Electrically connected.

The fuse bodies 40a and 40b are integrated on the battery post 12 side with respect to the fuse 43, and are electrically separated and extended on the connector 42 side to form the connector 42 independently. Yes.
Further, when manufacturing the fuse units 10a and 10b, fuse bodies 40a and 40b including the fuse 43 having the fusible portion 41 at a predetermined position are formed in a flat shape, and the fuse bodies 40a and 40b are made of resin by housing 30a, After the 30b and the mounting portions 20a and 20b are integrally molded, the fuse bodies 40a and 40b can be bent downward at right angles.

  As shown in FIG. 4, when the first fuse unit 10a and the second fuse unit 10b have the same shape of the housings 30a and 30b and the shapes of the cavities 31a and 31b, both the housings 30a and 30ba cavities 31a, 31b completely overlaps. For this reason, the fuse 43a located in the cavity 31a of the housing 30a is hidden behind the fuse 43b located in the cavity 31b of the housing 30b. In this case, the fusible part 41a in the fuse 43a and the fusible part 41b in the fuse 43b are visible from the front because they are shifted from each other in the vertical position of the fusible parts 41a and 43b.

  That is, the fusible portion 41a of the fuse 43a of the first fuse unit 10a is disposed at a position lower than the center P0 of the fuse 43a as shown in FIG. On the other hand, the fusible portion 41b of the fuse 43b of the second fuse unit 10b is arranged at a position higher than the center P0 of the fuse 43b, as shown in FIG. As shown in FIG. 5C, when the shape of the fuse 43 is point-symmetric with respect to the center P0 and the fusible portion 41 is provided at a position deviating from the center P0, it is 180 degrees. By reversing, the heights of the soluble portions 41a and 41b can be easily shifted. For this reason, as shown in FIG. 4, when it sees from the front, the state of both the soluble parts 41a and 41b can be visually recognized. The same applies to the case where the soluble portion 41a is disposed above the center and the soluble portion 41b is disposed below the center.

  6 is a front view showing another form in which the fuse on the battery side and the fuse on the front side are shifted, FIG. 7A is a front view showing the arrangement of the fuse on the battery side, and FIG. 6B is the arrangement of the fuse on the front side. FIG.

As shown in FIGS. 7A and 7B, by shifting the positions of the fuses 43a, 43b in the cavities 31a, 31b, the fusible portion 41a of the first fuse unit 10a and the second fuse unit 10b It arrange | positioned so that the soluble part 41b may not overlap. As a result, as shown in FIG. 6, when the fuse units 10a and 10b are viewed from the front, the fusible portion 41a and the fusible portion 41b can be simultaneously viewed through the front cavity 31b.
In this case, the fusible portions 41a and 41b may be provided at the center positions of the fuses 43a and 43b. Alternatively, as in the case shown in FIG. 4 and FIG.

8A and 8B show a case where the positions of the cavities 31a and 31b in the housings 30a and 30b are shifted.
In this case, the case where the housings 30a and 30b having the same size in the cavities 31a and 31b, the size and shape of the fuses 43a and 43b, and the arrangement in the cavities 31a and 31b are overlapped is applicable. Although the positions of the housings 30a and 30b are exactly the same, the positions of the fuses 43a and 43b are shifted by shifting the horizontal positions of the cavities 31a and 31b, so that the fusible portions 41a and 41b are shifted and do not overlap. For this reason, the soluble part 41a of the 1st fuse unit 10a and the soluble part 41b of the 2nd fuse unit 10b can be visually recognized from the front.

9A and 9B show a case where the mounting positions of the housings 30a and 30b are shifted.
In this case, the case where the housings 30a and 30b having exactly the same size and arrangement of the cavities 31a and 31b, the size and shape of the fuses 43a and 43b, and the arrangement of the cavities 31a and 31b are shifted in the horizontal direction is applicable. . Since the positions of the fuses 43a and 43b are shifted by shifting the housings 30a and 30b, the fusible portions 41a and 41b are shifted and do not overlap. For this reason, the soluble part 41a of the 1st fuse unit 10a and the soluble part 41b of the 2nd fuse unit 10b can be visually recognized from the front.

  As described above, according to the above-described fuse units 10a and 10b, the fusible portions 41a and 41b can be visually recognized from the front by shifting the positions of the fusible portions 41a and 41b, so that the state of the fuses 43a and 43b can be easily grasped. it can.

The fuse units 10a and 10b of the present invention are not limited to the above-described embodiments, and appropriate modifications and improvements can be made.
For example, in the above-described embodiment, the case where two fuse units 10a and 10b are stacked has been described. However, it is possible to stack three or more fuse units.

  Further, in the above-described fuse units 10a and 10b, the case where the connector 42 is provided at the tip (lower end) of the housings 30a and 30b has been described. However, like the fuse unit 10c shown in FIG. Alternatively, a terminal 44 connected by a screw 44a can be provided. In this case, it is limited to the fuse unit 10c stacked at the top so that the operation can be performed from the front, and the other fuse units 10a and 10b are fuses of the type to which the connector 16 can be connected from below as described above. A unit is good.

It is a disassembled perspective view which shows the state which attaches the fuse unit which concerns on this invention to a battery. It is a top view of a fuse unit. It is a side view of a fuse unit. It is a front view of a fuse unit. Ru (A) is a front view showing a fuse on the battery side, (B) is a front view showing a front fuse, and (C) is a front view showing the shape of the fuse. It is a front view which shows another form which shifted the fuse by the side of a battery, and the fuse of the front. (A) is a front view which shows arrangement | positioning of the fuse by the side of a battery, (B) is a front view which shows arrangement | positioning of the fuse of the front. (A) And (B) is a front view of the housing which shifted the position of the cavity. (A) And (B) is explanatory drawing at the time of shifting the attachment position of a housing. It is a front view which shows another example of a housing. It is a disassembled perspective view which shows the conventional fuse unit.

Explanation of symbols

10a, 10b Fuse unit 11 Battery 11a Battery side surface 12 Battery post 20a, 20b Mounting part 21 Arm 30a, 30b Housing 31a, 31b Cavity 40a, 40b Fuse body 41a, 41b Fusible part 42 Electric wire connecting part 43a, 43b Fuse (fusible body )

Claims (5)

A mounting portion attached to the battery post of the battery and having an arm of a predetermined length, a housing formed by bending at right angles from the arm and facing the battery side surface, and one end electrically connected to the battery post and the other The end has a fuse body that is enclosed in the housing and forms a wire connection part via a fusible part,
The position of the fusible part disposed in the cavity opened in the front and rear in the housing is shifted for each housing so that the fusible part can be visually recognized from the front when the housing is stacked in a direction away from the battery. Fuse unit characterized by that.   The fuse unit according to claim 1, wherein the position of the fusible part in the fusible body disposed in the cavity including the fusible part is shifted.   2. The fuse unit according to claim 1, wherein a fusible body disposed in the cavity including the fusible part is shifted.   The fuse unit according to claim 1, wherein the position of the cavity is shifted for each housing.   The fuse unit according to claim 1, wherein a position of the housing is shifted.

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