JP5437766B2 - Fuse unit - Google Patents

Description

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

  FIG. 5 is a perspective view showing a schematic configuration of a conventional fuse unit 200, and FIG. 6A is a partial arrow view of the fuse unit 200 shown in FIG. ) Is a VIB arrow view in FIG.

  FIG. 7 is a diagram showing a schematic configuration of another conventional fuse unit 250 (see, for example, Patent Document 1). FIG. 7A is a front view of the fuse unit 250, and FIG. FIG. 8 is a cross-sectional view taken along line AA in FIG.

  The conventional fuse unit 200 is used by being integrally installed on a battery post of an automobile battery via a battery terminal, and is provided on the tip side (the side opposite to the side connected to the battery terminal). A plurality of downstream terminal coupling sites (device-side connection portions) 202 (202A to 202D) are provided.

  Bolts 204 (204 </ b> A to 204 </ b> D) are provided in these device-side connection portions 202, and using these bolts and nuts (not shown), electric wire terminals of the electric devices are connected to the device-side connection portion 202. To be connected to.

  Similarly to the fuse unit 200, the conventional fuse unit 250 is also used by being integrally installed on the battery post 256 of the vehicle battery 254 via the battery terminal 252. A plurality of device side connection portions 258 (258A to 258D) are provided on the tip end side of the fuse unit 250. Furthermore, in the apparatus side connection part 258, the terminal of the electric wire 268 of an electric equipment is connected to the apparatus side connection part 258 using the volt | bolt 260 (260A-260D) and the nut 262 (262A-262D). Yes.

  Note that reference numeral 206 shown in FIG. 5 indicates a fusible portion, and reference numeral 208 indicates a battery-side connection portion. Further, reference numeral 264 shown in FIG. 7 indicates a fusible part, and reference numeral 266 indicates a battery side connection part.

JP 2000-182506 A

  By the way, the installation interval (pitch) P10 of each device side connection portion 202 (258) provided in the fuse unit 200 (250) is uniquely determined by the size of the tool for turning the nut or bolt described above. Yes. That is, a tool for turning a bolt or nut is used when installing a terminal of an electric wire in one device-side connection portion. At this time, another tool adjacent to the one device-side connection portion is used. The installation interval P10 of the device side connection portion 202 (258) is determined so that the tool does not interfere with the bolts and nuts of the device side connection portion.

  Accordingly, there is a problem that it is difficult to reduce the dimension W10 in the width direction of the fuse unit.

  On the other hand, although depending on the space in which the fuse unit is mounted (installation mode of the fuse unit), the distance R (see FIG. 7B) between the battery and the fuse unit installed in the battery (battery post) is Often has a certain size. Nevertheless, the device-side connecting portion is arranged side by side on one side of the bus bar (the side opposite to the battery).

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a fuse unit capable of making a lateral dimension (width) smaller than that of a conventional one.

  The invention according to claim 1 is made of a conductive material, and includes a battery side connection portion, a plurality of soluble portions protruding in a vertical direction from an end portion of the battery side connection portion, and each of the soluble portions. A plurality of device-side connection portions provided at the front end of each of the bus bars, wherein each of the device-side connection portions is arranged at a predetermined interval in the horizontal direction and alternately arranged in the front and back directions, and insulated. A body that covers the bus bar so that the bus bar is exposed at a predetermined portion of the battery side connection portion and the bus bar is exposed at a predetermined portion of the device side connection portion; A fuse unit having

  A second aspect of the present invention is the fuse unit according to the first aspect, wherein the device-side connecting portions are alternately arranged in the vertical direction while being shifted in position.

According to a third aspect of the present invention, in the fuse unit according to the first or second aspect ,
Each device-side connection portion is provided with a bolt whose protruding direction is alternately different in the front and back direction of the bus bar, and the device-side connection portion is connected to an electric device using this bolt. This is a fuse unit.

  According to the present invention, there is an effect that it is possible to provide a fuse unit in which the lateral dimension (width) can be made smaller than that of the conventional one.

It is a perspective view which shows schematic structure of the fuse unit which concerns on embodiment of this invention. (A) is the partial arrow line view which looked at the fuse unit shown in FIG. 1 from II direction, (b) is the IIB arrow line view in (a). It is a partial arrow view of a fuse unit, and is the same figure as Drawing 2 (a). It is a figure which shows the modification of arrangement | positioning of an apparatus side connection part, and is a figure corresponding to FIG. It is a perspective view which shows schematic structure of the conventional fuse unit. (A) is the partial arrow view which looked at the conventional fuse unit shown in FIG. 5 from VI direction, (b) is the VIB arrow view in (a). It is a figure which shows schematic structure of another conventional fuse unit.

  FIG. 1 is a perspective view showing a schematic configuration of a fuse unit 1 according to an embodiment of the present invention, and FIG. 2A is a partial arrow view of the fuse unit 1 shown in FIG. FIG. 2 (b) is a view taken along arrow IIB in FIG. 2 (a).

  The fuse unit 1 is configured in the same manner as the conventional fuse unit 200 or the conventional fuse unit 250 except that the arrangement of the plurality of device side connection portions 3 (3A to 3B) is different, such as metal. Bus bar 5 made of a conductive material and a body 7 made of an insulating material such as resin.

  The bus bar 5 includes a battery-side connection portion (battery-side plate-like portion) 9 connected to a battery terminal (not shown), and a plurality of fusible portions 11 (which protrude from the end of the battery-side connection portion 9 in the vertical direction. 11A to 11D) and a plurality of device-side connection portions (device-side plate-like portions; downstream terminal coupling sites) 3 (3A to 3D) provided at the distal ends of the soluble portions 11 (11A to 11D). Configured. The apparatus side connection part 3 is a site | part electrically connected using the fasteners, such as a screw, to each of the terminal of the wiring extended from the some electric apparatus (for example, illuminating device etc. of a motor vehicle) which is not shown in figure.

  Here, since the battery side connection portion 9 of the fuse unit 1 (bus bar 5) (the fuse unit 1 is bent at the battery side connection portion 9 and formed in an “L” shape, more precisely, the fusible portion 11), the protruding direction of the fusible portion 11 (the direction in which the battery side connecting portion 9, the fusible portion 11, and the device side connecting portion 3 are arranged in this order) is defined as the vertical direction, and is orthogonal to the vertical direction. The direction in which the fusible portions 11 (11A to 11D) and the device side connection portions 3 (3A to 3D) are arranged in the horizontal direction is the horizontal direction, and the direction perpendicular to the vertical direction and the horizontal direction is the bus bar 5 The thickness direction (front and back direction) of the fusible portion 11 and the device-side connecting portion 3 is used.

  As described above, the fusible portions 11 (11A to 11D) are provided side by side with a predetermined interval in the horizontal direction, and each device side connection portion 3 (3A to 3D) is also predetermined in the horizontal direction. Further, the apparatus side connection portions 3 (3A to 3D) are alternately arranged in the thickness direction (front and back direction).

  The body 7 is provided integrally with the bus bar 5 so that a predetermined part of the bus bar 5 is exposed. That is, in the body 7, the bus bar 5 is exposed at a predetermined portion of the battery side connection portion 9 (a portion to which the battery terminal is connected and a portion in the vicinity thereof), and a predetermined portion of each device side connection portion 3 (3A to 3D). The bus bar 5 is exposed at the site (the site to which the wiring terminal of the electrical equipment is connected and the site in the vicinity thereof), the bus bar 5 is exposed at each fusible part 11 (11A to 11D), and is bent into an “L” shape. The bus bar 5 is covered so that the bus bar 5 is exposed at the portion of the battery side connection portion 9 to be provided.

  The bus bar 5 is formed in a predetermined flat plate shape by cutting (for example, punching using a mold) a thin flat plate material (made of metal).

  When the flat bus bar 5 after cutting is viewed from this thickness direction, the rectangular battery-side connection portion 9, the narrow and long soluble portions 11 (11 </ b> A to 11 </ b> D), and the tips of the soluble portions 11 It is comprised by each apparatus side connection part 3 (3A-3D) formed in the rectangular shape smaller than the battery side connection part 9. FIG. The elongated portions 11 (11A to 11D) are arranged in the horizontal direction so as to be substantially parallel to each other, and are elongated (projected) from one end in the vertical direction of the battery side connection portion 9.

  The battery side connection portion 9 is connected to the battery side connection portion 9 in the thickness direction to the central portion in the horizontal direction and the portion on the other end portion side in the vertical direction (the portion opposite to the side where the soluble portion 11 protrudes). A through hole 15 penetrating the portion 9 is provided. A battery terminal bolt is inserted into the through-hole 15, and the fuse unit 1 is integrally installed on the battery terminal with the bolt and the nut. The battery terminal is integrally installed on the battery post of the battery.

  Bolts 17 (17A to 17D) are integrally provided at the central portion of the device side connection portion 3 (3A to 3D). These bolts 17 (17A to 17D) protrude in the thickness direction (front and back direction) of the device side connection portion 3 (3A to 3D). In addition, since each apparatus side connection part 3 (3A-3D) is arrange | positioned alternately by the thickness direction, the volt | bolt 17 (17A-17D) is also the thickness direction of each apparatus side connection part 3 (3A-3D). Projecting alternately. That is, the bolts 17 (17 </ b> A to 17 </ b> D) are provided so that the protruding directions are alternately different in the front and back directions of the bus bar 5. Using these bolts 17 (17A to 17D) and nuts, the terminals of the electric wires extending from the electric devices are installed and connected to each of the device side connection portions 3 (3A to 3D). .

  The body 7 (resin body) is provided integrally with the bus bar 5 by insert molding, for example, as in the case of the conventional fuse unit 200. In the same manner as in the case of the conventional fuse unit 250, the resin body 7 may be separately molded, and the resin body 7 may be integrally installed on the bus bar 5 by caulking by heat after the molding.

  The body 7 includes a first part 19 and a second part 21 that is separated from the first part 19.

  The first portion 19 of the resin body 7 is formed so that the bus bar 5 is exposed at the through hole 15 of the battery side connection portion 9 and the periphery thereof, the bent line of the battery side connection portion 9, and the like. Covering. The bend line of the battery side connection portion 9 is a bend line for bending the bus bar 5 by about 90 ° after the resin body 7 is provided on the bus bar 5 to make the fuse unit 1 into an “L” shape. Between the one end part of the connection part 9 in the vertical direction and the through hole 15, it extends linearly in the lateral direction of the battery side connection part 9.

  The second portion 21 of the resin body 7 is configured such that the bus bar 5 is exposed at the bolt 17 of the device side connection portion 3 and the periphery thereof, a part of the soluble portion 11, etc. 11 is covered.

  Since each apparatus side connection part 3 (3A-3D) is arrange | positioned at predetermined intervals in the horizontal direction, and is arrange | positioned alternately by the thickness direction (front and back direction), it is the volt | bolt 17 (17A-17D). In addition, the parts of the device side connection portions 3 (3A to 3D) around the bolts 17 (17A to 17D) are in the thickness direction of the device side connection portions 3 (3A to 3D). They are not covered with the two parts 21 but are alternately exposed. Thereby, the fuse unit 1 can be referred to as a multi-chain fuse in which the punched bus bar 5 is covered with an insulating resin. In addition, the structure which uses the nut instead of the volt | bolt 17 may be sufficient.

  Here, as shown in FIG. 1 and FIG. 2, the case where four device side connection parts 3 are provided will be described in more detail as an example.

  When each device-side connecting portion 3 is counted from one side in the lateral direction to the other side, odd-numbered device-side connecting portions 3A and 3C and bolts 17A and 17C are connected to the front side of the fuse unit 1 ( It is provided on the one side in the thickness direction of the device-side connecting portion 3 of the bus bar 5. This portion is not covered with the resin body 7, and one surface (front side) surface in the thickness direction of the bolts 17A and 17C and the device side connection portions 3A and 3C is exposed. Further, even-numbered device side connection portions 3B and 3D are provided on the back side of the fuse unit 1 (the other side in the thickness direction of the device side connection portion 3 of the bus bar 5). This part is also not covered with the resin body 7, and the other surfaces (back side) in the thickness direction of the bolts 17B and 17D and the device side connection portions 3B and 3D are exposed.

  The front side of the fuse unit 1 is the side opposite to the battery when the L-shaped fuse unit 1 is installed in the battery using the battery terminals, and the back side of the fuse unit 1 is On the battery side.

  Moreover, in the vertical direction, each apparatus side connection part 3 (3A-3D) and the volt | bolt 17 (17A-17D) are located in the substantially the same place. That is, each apparatus side connection part 3 (3A-3D) and the volt | bolt 17 (17A-17D) are arrange | positioned on the straight line extended in the horizontal direction.

  Moreover, in the horizontal direction, the pitch P1 of each apparatus side connection part 3 (3A-3D) and the volt | bolt 17 (17A-17D) is small compared with the conventional fuse unit.

  Specifically, in the conventional fuse units 200 and 250 shown in FIG. 6 and FIG. 7, the tool space needs a width of about 20 mm, so the pitch P10 is about 21 mm. In the fuse unit 1 shown, the pitch P10 is about 10.5 mm. Accordingly, in the conventional fuse unit 200 shown in FIG. 6, the width W10 of each device-side connecting portion 202 is about 89.7 mm. In the fuse unit 1 shown in FIGS. The width W1 of 3 (3A to 3D) is about 56.0 mm. Therefore, the fuse unit 1 is about 37% smaller than the conventional fuse unit 200 in the lateral direction.

  In addition, when the apparatus side connection part 3 (3A-3D) is seen from the thickness direction, the rectangular apparatus side connection parts 3 adjacent to each other do not overlap each other and are arranged with a slight gap. Yes. Thereby, the bus bar 5 can be easily generated from a single material by cutting.

  By the way, the structure by which each apparatus side connection part 3 (3A-3D) is alternately arrange | positioned by shifting a position in the vertical direction may be sufficient.

  That is, as shown in FIG. 4 (a), each device-side connecting portion 3 (3A to 3D) is not displaced in the vertical direction (see FIGS. 2 and 3). 3A to 3D) may be alternately shifted in the vertical direction. In the configuration shown in FIG. 4A, the odd-numbered device-side connection portions 3A and 3C counted from the left and the even-numbered device-side connection portions 3B and 3D counted from the left are distances in the vertical direction. It is shifted by P3.

  In FIG. 4 (a), in the vertical direction, a part of each odd-numbered device-side connection 3A, 3C and a part of each even-numbered device-side connection 3B, 3D overlap each other. However, as shown in FIG. 4B, the odd-numbered device-side connection portions 3A and 3C and the even-numbered device-side connection portions 3B and 3D are separated by a distance larger than the distance P3. In the vertical direction, the odd-numbered device-side connection portions 3A and 3C and the even-numbered device-side connection portions 3B and 3D may be separated at an interval P5 so as not to overlap.

  According to the fuse unit 1, since the device side connection portions 3 are alternately arranged in the thickness direction (front and back direction), the pitch P1 of the device side connection portions 3 in the lateral direction is reduced to reduce the lateral direction. The dimension (width dimension) W1 can be made smaller than the conventional one. Even if the pitch P1 of each equipment side connection part 3 is made small, the interference of the tool which turns the volt | bolt 17 and nut for installing the terminal of the wiring of an electric equipment can be prevented.

  That is, since the projecting direction of the bolts 17 is alternately reversed in the thickness direction (front and back direction) (because the projecting directions of the bolts 17 are alternately bidirectional), the tool space can be overlapped. It has become.

  Note that the distance R between the battery and the fuse unit 1 installed in the battery (battery post) (see FIG. 7B) is generally a certain amount (the device-side connecting portion 3 includes bolts 17 and So that even if the bolt 17 of the device-side connecting portion 3 protrudes toward the battery side, no trouble occurs and the dead side is rather dead. Space can be used effectively.

  Further, in the fuse unit 1, if the device-side connection portions 3 are alternately arranged with their positions shifted in the vertical direction, as in the case where the device-side connection portions 3 are alternately arranged in the front and back directions, The lateral dimension can be made smaller than the conventional one.

  Furthermore, even if the lateral dimension of one device-side connection portion 3 is increased, the device-side connection portions 3 adjacent to each other are separated from each other by a distance P5 in the vertical direction (see FIG. 4B). If the width dimension (horizontal dimension) of the melted part 11 is smaller than the width dimension (lateral dimension) of one device side connection part 3, the bus bar 5 can be manufactured from one material by cutting.

  Further, according to the fuse unit 1, each device-side connecting portion 3 is configured to be connected to the electric device using the bolt 17, so that the wiring terminal of the electric device is installed in the device-side connecting portion 3. Work becomes easier.

  By the way, in the said description, although each apparatus side connection part 3 is alternately arrange | positioned in the front and back direction, the structure which has arrange | positioned alternately only in the vertical direction without arrange | positioning each apparatus side connection part 3 alternately in the front and back direction. It may be.

  That is, a battery-side connection portion, a plurality of fusible portions protruding in the vertical direction from the end portion of the battery-side connection portion, and a plurality of device-side connection portions provided at the tip of each fusible portion Each of the device-side connecting portions are arranged at predetermined intervals in the horizontal direction, are alternately arranged in the vertical direction at different positions, and are arranged on one side in the front-back direction; The fuse bar may include a body covering the bus bar so that the bus bar is exposed at a part of the battery side connection part and the bus bar is exposed at a part of the device side connection part.

DESCRIPTION OF SYMBOLS 1 Fuse unit 3 Device side connection part 5 Bus bar 7 Body 9 Battery side connection part 11 Soluble part 17 Bolt

Claims (3)

Consists of a conductive material, a battery-side connection portion, a plurality of soluble portions protruding in the vertical direction from the end portion of the battery-side connection portion, and a plurality of provided at the tip of each soluble portion Device-side connection portions, each of the device-side connection portions is arranged at a predetermined interval in the horizontal direction, and bus bars are alternately arranged in the front and back directions, and
A body that is made of an insulating material and covers the bus bar so that the bus bar is exposed at a predetermined portion of the battery side connection portion and the bus bar is exposed at a predetermined portion of the device side connection portion When,
A fuse unit comprising: The fuse unit according to claim 1, wherein
The fuse units are characterized in that the device side connection portions are alternately arranged at different positions in the vertical direction. In the fuse unit according to claim 1 or 2 ,
Each device-side connection portion is provided with a bolt whose protruding direction is alternately different in the front and back direction of the bus bar, and the device-side connection portion is connected to an electric device using this bolt. A fuse unit characterized in that it is configured.

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