JP2017216212A - Bus bar coupling structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bus bar coupling structure with excellent coupling workability.SOLUTION: A bus bar coupling structure coupling a plurality of bus bar arrangement bodies 1, comprises a bus bar coupling component 10. The bus bar coupling component 10 includes an insulation case 11; and three terminals 20 arranged in the case 11. In the terminal 20, a plate spring part 23 and an engaging projection 24 are formed. When each of the bus bar arrangement bodies 1 is inserted into a bus bar fitting hole 12 of the bus bar coupling component 10, the plate spring part 23 is bent and deformed and can be inserted into a fitting space 25 of each of the bus bar arrangement bodies 1. When each of the bus bar arrangement bodies 1 is fitted up to a fitting completion position, the engaging projection 24 is entered into an engaging hole 2 of each of the bus bar arrangement bodies 1. When the other bus bar arrangement bodies 1 is similarly fitted to the bus bar coupling component 10, a coupling work is completed.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a bus bar connecting structure for connecting bus bars.

  In recent years, there is a vehicle body made of a synthetic resin such as carbon fiber reinforced plastic (CFRP) which is difficult to ground.

  As shown in FIG. 6, the conventional vehicle grounding structure of this type includes a plurality of ground plates 51 arranged at each ground point of the vehicle body 50 and a plurality of electric wires 52 connecting the ground plates 51. What was comprised more is proposed (refer patent document 1, 2). A terminal 53 is fixed to the end of the electric wire 52.

  As shown in FIG. 7, the ground plate 51 and the electric wire 52 are connected by fastening and fixing the terminal 53 with a stud bolt 60 provided on the ground plate 51 and a nut 61 screwed into the stud bolt 60.

  Moreover, as a grounding arrangement structure, it can be considered to be constituted by a bus bar. In this case, it is preferable from the viewpoints of handleability, transportability, and the like to configure the ground routing structure by connecting a plurality of bus bars. Conventionally, the bus bars are connected to each other by the stud bolt 60 and the nut 61 or by welding in the same manner as described above.

Japanese Patent No. 5030023 JP 2009-6773 A

  However, when the bus bars are connected to each other by fastening means (bolts and nuts) or welding, there is a problem that the connection workability is poor.

  Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a bus bar connection structure with good connection workability.

  The present invention is a bus bar coupling structure that couples a plurality of bus bar arrangements, and includes a bus bar coupling component having a terminal to which the bus bar arrangement is fitted and to which the fitted bus bar arrangement is connected. The bus bar connecting structure is characterized in that a plurality of bus bar arrangement bodies are connected via the bus bar connecting parts.

  According to the present invention, since the bus bar arrangement body may be fitted to the terminal, the connection workability is good.

1 shows a first embodiment of the present invention, (a) is a perspective view of a bus bar connection structure, (b) is a cross-sectional view of the bus bar connection structure. The 2nd Embodiment of this invention is shown, (a) is a perspective view of a bus-bar connection structure, (b) is sectional drawing of a bus-bar connection structure. The 2nd Embodiment of this invention is shown, (a) is sectional drawing of a multipoint contact protrusion, (b), (c) is sectional drawing of the modification of a multipoint contact protrusion, respectively. The 3rd Embodiment of this invention is shown, (a) is a perspective view of a bus-bar connection structure, (b) is sectional drawing of a bus-bar connection structure. The reference example of this invention is shown, (a) is a perspective view of the connection structure of a bus bar and a tab terminal, (b) is sectional drawing of the connection structure of a bus bar and a tab terminal. It is a block diagram of the grounding arrangement structure of a prior art example. It is a perspective view of the connection structure of the ground plate and electric wire of a prior art example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1A and 1B show a first embodiment of the present invention. The vehicle body (not shown) is made of carbon fiber reinforced plastic (CFRP). Carbon fiber reinforced plastic (CFRP) is a material that is difficult to ground. A ground circuit is constituted by a plurality of bus bar arrangement bodies 1 connected to each other on such a vehicle body. The plurality of bus bar arrangement bodies 1 are connected by a bus bar connecting structure. Hereinafter, the bus bar arrangement body 1 and its bus bar connection structure (including circuit branch and connection parts) will be described.

  Each bus bar arrangement | positioning body 1 is formed from the metal material or alloy material which has high electroconductivity, such as copper and aluminum. Each bus bar arrangement body 1 has a flat plate shape (rectangular section), and extends in a direction along the arrangement direction in the form of the same cross section. A locking hole 2 is formed at each end of each bus bar arrangement body 1.

  The bus bar connection structure includes a bus bar connection component 10. The bus bar connecting component 10 includes an insulating case 11 and three terminals 20 disposed in the case 11. The case 11 has a flat square shape, and a bus bar fitting opening 12 is formed on the side surface in the three directions. The three terminals 20 are formed as an integral part by bending one conductive metal plate. That is, the three terminals 20 are electrically connected joint terminals. Each terminal 20 includes a lower plate portion 21, an upper plate portion 22, and a leaf spring portion 23 extending from the upper plate portion 22. The leaf spring portion 23 has a spring property and bends and deforms. The leaf spring portion 23 is integrally provided with a locking projection 24 that protrudes toward the lower plate portion 21.

  A fitting space 25 in which the bus bar arrangement body 1 is fitted is provided between the lower plate portion 21 and the leaf spring portion 23. The fitting space 25 of each terminal 20 is provided at a position that opens to each bus bar fitting port 12 of the case 11. That is, the three terminals 20 are arranged in directions in which the fitting directions of the bus bar arrangement bodies 1 are different from each other. When the bus bar arrangement body 2 is not fitted, the fitting space 25 is formed with a space only on the fitting entrance side by the leaf spring portion 23, and the fitting back side is closed by the leaf spring 23 (FIG. 1 ( Refer to the terminal on the left side of b).

  In the above configuration, when the bus bar arrangement body 1 is inserted into the bus bar fitting hole 12 of the bus bar connecting part 10, the plate spring 23 is bent and deformed, and insertion of the bus bar arrangement body 1 into the fitting space 25 is allowed. . When the bus bar arrangement body 1 is fitted to the fitting completion position, the engagement protrusion 24 enters the engagement hole 2 of the bus bar arrangement body 1 (see the terminal on the right side of FIG. 1B). If other bus bar arrangement bodies 1 are similarly fitted to the bus bar connecting component 10, the connecting operation is completed.

  As described above, since each bus bar arrangement body 1 has only to be fitted into the fitting space 25 of the terminal 20, the connection workability is good.

  In the fitting completion position, the bus bar arrangement body 1 and the terminal 20 are firmly fitted and do not easily disengage because the locking protrusion 24 enters the locking hole 2. Further, the bus bar arrangement body 1 may be provided with a locking projection, and the terminal 20 may be provided with a locking hole.

  The bus bar connecting component 10 includes a plurality of terminals 20 that are electrically connected to each other and that have different fitting directions of the bus bar arrangement body 1. Therefore, the bus bar arrangement bodies 1 in different directions can be connected.

  In this 1st Embodiment, although the bus-bar connection member 10 is comprised so that the three bus-bar arrangement | positioning bodies 1 can be connected, even if comprised so that two or four or more terminals 20 can be connected. good. In the first embodiment, the three terminals 20 are formed from one conductive metal plate, but may be formed from a plurality of conductive metal plates.

(Second Embodiment)
2 and 3 show a second embodiment of the present invention. The vehicle body (not shown) is made of carbon fiber reinforced plastic (CFRP). Carbon fiber reinforced plastic (CFRP) is a material that is difficult to ground. A ground circuit is constituted by a plurality of bus bar arrangement bodies 1 connected to each other on such a vehicle body. The plurality of bus bar arrangement bodies 1 and 1A are connected by a bus bar connecting structure. Hereinafter, the bus bar arrangement bodies 1 and 1A and the bus bar connection structure (including circuit branch parts and connection parts) will be described.

  As shown in FIG. 2, each bus bar arrangement | positioning body 1, 1A is formed from the metal material or alloy material which has high electroconductivity, such as copper and aluminum. Each bus bar arrangement body 1, 1 </ b> A has a flat plate shape (rectangular section), and extends in the direction along the arrangement direction in the form of the same cross section.

  The bus bar connection structure has a terminal 30 that is a bus bar connection component. The terminal 30 is formed by bending a single conductive metal plate. The terminal 30 is fixed to the surface of the bus bar arrangement body 1 by welding, welding, soldering, or the like. The terminal 30 has a pair of side surface portions 31, a rear surface portion 32, and an upper surface portion 33, and has a square box shape in which the front side is a bus bar fitting port 34. The terminal 30 is formed with a fitting space 35 in which the bus bar arrangement 1 is fitted. The upper surface portion 33 is integrally provided with a multipoint contact projection 36 having a spring property and a large number of which are continuously arranged. As shown in FIG. 3A, the multipoint contact protrusion 36 is formed in an arch shape in which the cross-sectional shape along the fitting direction of the bus bar arrangement body 1 is continuous.

  In the above configuration, the end portion of the other bus bar arrangement body 1 </ b> A is inserted into the fitting space 35 from the bus bar fitting port 34 of the terminal 30 on the bus bar arrangement body 1. Then, the multipoint contact protrusion 36 of the terminal 30 is bent and deformed, and fitting of the bus bar arrangement body 1 into the fitting space 35 is allowed. When the bus bar arrangement body 1 is fitted to the fitting completion position, the bus bar arrangement body 1A and the terminal 30 are fitted and electrically contacted by the spring return force of the multipoint contact protrusion 36. Thus, both bus bar arrangement bodies 1 and 1A are connected, and the connection operation is completed.

  As described above, since the other bus bar arrangement body 1A may be fitted in the fitting space 35 of the terminal 30 fixed to the bus bar arrangement body 1, the connection workability is good.

  Since the terminal 30 and the bus bar arrangement body 1A are in contact with each other by the multipoint contact protrusion 36, the electrical connection reliability is good.

  3 (b) and 3 (c) show modified examples of the multipoint contact protrusions 36a and 36c. The multipoint contact protrusion 36a in FIG. 3 (b) is formed in a flat convex portion having a continuous cross-sectional shape along the fitting direction of the bus bar arrangement body 1A. The multipoint contact protrusion 36b in FIG. 3C is formed in an arc shape in which a cross-sectional shape along the fitting direction of the bus bar arrangement body 1A is continuous and is cut in the middle. That is, the multipoint contact protrusion 36b has a barbed shape that bites into the bus bar arrangement body 1A when the bus bar arrangement body 1A moves in the anti-fitting direction. In the multipoint contact protrusion 36b of FIG. 3C, the multipoint contact protrusion 36b bites into the bus bar arrangement body 1 at the fitting completion position as compared with the multipoint contact protrusion 36b of FIG. 3A and 3B. Therefore, the bus bar arrangement body 1A and the terminal 30 are firmly fitted.

(Third embodiment)
FIG. 4 shows a third embodiment of the present invention. In the third embodiment, the lower surface portion 37 is provided on the terminal 30 as compared with the second embodiment. And the point which the multipoint contact protrusion 36 is integrally provided also in the lower surface part 37 is different.

  Since other configurations are the same as those of the second embodiment, a duplicate description is omitted. Further, the same components in the drawings are denoted by the same reference numerals for clarification.

  Also in the third embodiment, the same effects as in the second embodiment such as easy connection work can be obtained.

  In the third embodiment, since the multipoint contact protrusion 36 is also provided on the lower surface portion 37 as compared with the second embodiment, the number of contact points with the bus bar arrangement body 1A is increased, and connection reliability is further increased. Will improve.

(Reference example)
FIG. 5 shows a reference example of the present invention. This reference example is a connection structure between the bus bar arrangement body 1 and the tab terminal 40. The configuration of the bus bar arrangement body 1 and the terminal 30 which is a connecting component is substantially the same as that of the third embodiment, but the upper portion 33 and the lower surface of the terminal 30 are different from those of the third embodiment. A locking projection 38 is formed on the portion 37. Each locking projection 38 protrudes toward the fitting space 35.

  The tab terminal 40 is, for example, a terminal connected to the ground wire W of the auxiliary machine. A locking hole 41 is formed in the tab-like terminal 40.

  Other configurations are the same as those of the third embodiment, and the same components in the drawings are denoted by the same reference numerals for clarification.

  In this reference example, the same effects as those of the third embodiment, such as easy connection of the bus bar arrangement body 1 and the tab terminal 40, can be obtained.

  In the fitting completion position, the bus bar arrangement body 1 and the tab terminal 40 are firmly fitted because the locking protrusion 38 enters the locking hole 41 and is positioned by the spring return force of the multipoint contact protrusion 36. The tab terminal 40 does not easily fall off. Further, a locking protrusion may be provided on the terminal 30 fixed on the bus bar arrangement body 1, and a locking hole may be provided in the tab terminal 40 fitted to the terminal 30.

  In the first embodiment, one or more bus bar arrangement bodies 1 may be tab terminals, and in the second and third embodiments, the bus bar arrangement on the fitting side is also provided. The body 1A may be a tab terminal.

1, 1A bus bar arrangement body 2 locking hole 10 bus bar connecting part 20 terminal 24 locking protrusion 30 terminal (bus bar connecting part)
36, 36a, 36b Multipoint contact protrusion 38 Locking protrusion 41 Locking hole

Claims (6)

A bus bar connection structure for connecting a plurality of bus bar arrangements,
A bus bar arrangement body is fitted, and includes a bus bar coupling part having a terminal to which the fitted bus bar arrangement body is connected, and a plurality of the bus bar arrangement bodies are coupled via the bus bar coupling part. Busbar connection structure characterized by. The bus bar connecting structure according to claim 1,
The bus bar connecting component is electrically connected to each other, and has a plurality of the terminals different from each other in the fitting direction of the bus bar arrangement body,
The bus bar connecting structure, wherein the bus bar arrangement body is fitted to at least two of the plurality of terminals. The bus bar connecting structure according to claim 1,
The said terminal is being fixed to the said bus-bar routing body, The said said bus-bar routing body is fitted by the said terminal, The bus-bar connection structure characterized by the above-mentioned. The bus bar connection structure according to claim 3,
The terminal has a spring property and a multi-point contact projection in which a large number are continuously arranged, and the bus bar arrangement body is brought into contact with the multi-point contact projection at a fitting completion position. Busbar connection structure characterized by. The bus bar connecting structure according to claim 4,
The bus bar connecting structure according to claim 1, wherein the multi-point contact protrusion has a reverse shape that bites into the bus bar arrangement body when the bus bar arrangement body moves in the anti-fitting direction. It is a bus-bar connection structure in any one of Claims 1-5,
Either one of the terminal and the bus bar routing body is provided with a locking projection that is positioned at a fitting completion position of the bus bar routing body, and the other of the terminal and the bus bar routing body is connected to the engagement bar. A bus bar connecting structure characterized in that a locking hole into which a stop protrusion enters is provided.

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