JPH0626001Y2 - Ground terminal block for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a ground terminal block of a vehicle such as a railroad vehicle, and more particularly to a ground terminal block for a vehicle made of a plurality of kinds of metal materials.

[Conventional technology]

A conventional vehicle ground terminal block in a railway vehicle will be described with reference to FIGS. 4 to 9.

5 (a) and 5 (b) are a front view and a right side view of the vehicle ground terminal block. The vehicle body (= vehicle body portion) 10 constitutes a vehicle body structure and is made of carbon steel, stainless steel, aluminum alloy, or the like. The ground terminal block 12 includes a vehicle body side metal material 14 and a copper plate 16, the vehicle body side metal material 14 is made of carbon steel, stainless steel, aluminum alloy or the like as the same metal as the vehicle body 10, and the copper plate 16 is a copper terminal described later. It is made of the same material as 26. Further, the vehicle body side metal material 14 is formed in an L shape and is fixed to the lower surface of the vehicle body 10 at the upper horizontal portion, and the copper plate 16 is a rectangular plate material. Car body 10, and therefore metal material on the car body side
When 14 is made of steel such as carbon steel or stainless steel, the copper plate 16 may be silver-brazed on the inner corner side surface of the lower vertical portion of the vehicle body metal member 14 as shown in FIG. The terminal mounting hole 18 is formed so as to penetrate the lower vertical portion of the metal member 14 on the vehicle body side and the copper plate 16.

6 (a) and 6 (b) are a front view and a right side view of another vehicle ground terminal block. In this ground terminal block 12b, copper plate 1
6 is silver brazed to the outer corner side of the lower vertical portion of the vehicle body side metal member 14.

FIGS. 7A and 7B are a front view and a right side view of another vehicle ground terminal block. When the vehicle body 10, and therefore the vehicle body side metal material 14 is made of an aluminum material such as an aluminum alloy, it is difficult to braze the copper plate 16 to the vehicle body side metal material 14, so that the copper plate 16 to the vehicle body side metal material 14 is Screwing is used for fixing. That is, in this ground terminal block 12, the vehicle body side metal member 14 is provided at a diagonal position of the copper plate 16.
Screw holes 20 penetrating the lower vertical portion and the terminal mounting hole 18 are formed, and a screw 22 is screwed into each screw hole 20,
As a result, the copper plate 16 is fixed to the lower vertical portion of the vehicle body side metal member 14.

FIGS. 8 (a) and 8 (b) are a front view and a right side view of another vehicle ground terminal block. In this ground terminal block 12d, the vehicle body-side metal material 14d is attached to the vertical portion of the vehicle body 10 and includes an upper vertical portion, an intermediate horizontal portion, and a lower vertical portion. Copper plate
16 is fixed to the side opposite to the vehicle body 10 of the lower vertical portion of the vehicle body side metal member 14d by silver brazing, screwing or the like.

9 (a) and 9 (b) are a front view and a right side view of another vehicle ground terminal block. In this ground terminal block 12e, the copper plate 1
6 is fixed to the vehicle body 10 side of the lower vertical portion of the vehicle body side metal material 14d by silver brazing or the like.

As described above, there are various shapes of the vehicle ground terminal block, but in any of the vehicle ground terminal blocks, the copper plate as the terminal side metal material is fixed to the vehicle body side metal material by brazing and screwing. ing.

FIG. 4 shows a use state of the vehicle ground terminal block of FIG. The ground wire 24 includes a copper core material, the end of the ground wire 24 is fixed with a copper terminal 26, and the bolt 28 is inserted through the insertion hole of the terminal 26 and the terminal mounting hole 18 and then the metal material on the vehicle body side. It is screwed into the nut 30 on the 14 side to contact and fix the terminal 26 to the copper plate 16.

[Problems to be solved by the device]

In the conventional ground terminal block for a vehicle, it is difficult to bring the metal material on the vehicle body side and the copper plate into close contact with each other. Therefore, a gap is created between them, which increases the electric resistance of the ground terminal block for a vehicle. Or, if water or the like enters the void, it may cause electrolytic corrosion.

An object of the present invention is to provide a vehicle-installed terminal block that can reduce electric resistance and prevent electrolytic corrosion.

[Means for Solving the Problems]

The vehicle ground terminal block (36, 36b) of the present invention is made of a composite material in which plural kinds of metal materials are pressure-welded together. The vehicle body side metal material (40) contacting the vehicle body portion (10) is the same metal as the vehicle body portion (10),
Metal material on the terminal side to which the terminal (26) of the ground wire (24) is connected
(42) is copper.

[Operation] As a result of the metal materials adjacent to each other in the composite material being pressure-bonded to each other, voids are eliminated in the bonded portion and the metal material is in a close contact state. This prevents water from entering the joint of the metal materials of the composite material, and also reduces the electrical resistance between adjacent metal materials.

〔Example〕

An embodiment of the present invention will be described with reference to FIGS.

FIGS. 2A and 2B are a front view and a right side view of the vehicle ground terminal block. The ground terminal block 36 is made of a composite material, and the composite material is formed by joining the vehicle body side metal material 40 and the terminal side metal material 42 by pressure welding, and is formed in an L shape. The vehicle body side metal material 40 is made of carbon steel, stainless steel, aluminum alloy or the like as the same metal as the vehicle body 10, and the terminal side metal material 42 is
It is made of the same copper as the terminal 26 as a material having a low electric resistance.
Since the vehicle body side metal material 40 or the terminal side metal material 42 is a thin material,
Roll pressure welding is generally used to perform pressure welding. In addition, there are well-known explosion pressure welding, friction pressure welding, diffusion pressure welding and the like. Incidentally, in the explosive pressure welding, on the outer surface side of the vehicle body side metal material 40 or the terminal side metal material 42, an explosive is set along it, and the explosive is exploded so that the explosion point runs from one end of the explosive to the other, Due to the explosive force at this time, the metal material 40 on the vehicle body side and the metal material 42 on the terminal side are pressed and brought into close contact with each other so as to become the same body by the interatomic attraction. Further, another metal material such as titanium is interposed between the metal material 40 on the vehicle body side such as carbon steel and the metal material 42 on the terminal side of copper to form a three-layer clad or the like by interposing another metal material such as titanium. It is also possible. In the composite material, since the adjacent metal materials are pressure-bonded to each other, the adjacent metal materials are in close contact with each other without forming a gap therebetween. Therefore, the electric resistance of the composite material is extremely small, and water or the like does not enter the voids in the composite material to cause electrolytic corrosion.

The vehicle body side metal material 40 at the upper horizontal portion of the composite material is fixed to the lower surface of the vehicle body 10, and the terminal mounting hole 44 is formed so as to penetrate through the lower vertical portion of the composite material.

FIGS. 3A and 3B are a front view and a right side view of another vehicle ground terminal block. In this ground terminal block 36b, the composite material is attached to the vertical portion of the vehicle body 10 and includes an upper vertical portion, an intermediate horizontal portion, and a lower vertical portion. Terminal mounting hole 44
Are formed in the lower vertical portion of the composite.

FIG. 1 shows the ground terminal block 36 of FIG. 2 in use. The bolt 28, after being inserted through the insertion hole of the terminal 26 and the terminal mounting hole 44, is screwed into the nut 30 on the vehicle body side metal material 14 side, and the copper terminal 26 is brought into contact with and fixed to the composite terminal side metal material 42. is doing.

Although illustration is omitted, the shape of the composite material can be various as in the conventional vehicle ground terminal block shown in FIGS. 5 to 9.

[Effect of device]

In this invention, the ground terminal block for a vehicle is made of a composite material in which a plurality of types of metal materials are pressure-bonded to each other, and the adjacent metal materials of the composite material are in close contact with each other by removing the gap between them. . Therefore, the electric resistance of the vehicle ground terminal block is reduced, and electrolytic corrosion caused by the intrusion of water or the like into the gap between the adjacent metal materials can be prevented.

[Brief description of drawings]

1 to 3 relate to an embodiment of the present invention, FIG. 1 is a view showing a usage state of the ground terminal block of FIG. 2, and FIGS. 2 (a) and 2 (b) are vehicle ground terminals. FIGS. 3A and 3B are front views and right side views of other vehicle ground terminal blocks, and FIGS. 4 to 9 are conventional vehicle ground terminal blocks. 4, FIG. 4 is a view showing a usage state of the ground terminal block of FIG. 5, and FIGS. 5 (a) and 5 (b) are a front view and a right side view of a conventional first ground terminal block for a vehicle. 6 (a)
And (b) are a front view and a right side view of a conventional second vehicle ground terminal block, and FIGS. 7 (a) and (b) are a front view and a right side view of a conventional third vehicle ground terminal block. FIGS. 8 (a) and 8 (b) are a front view and a right side view of a conventional fourth vehicle ground terminal block, and FIGS. 9 (a) and 9 (b) are conventional fifth vehicle ground terminals. It is a front view and a right side view of a terminal block. 10 ... Car body (car body part), 24 ... Ground wire, 26 ...
Terminals, 36, 36b ... Ground terminal block, 40 ... Car body side metal material, 42 ... Terminal side metal material.

Claims (1)

[Scope of utility model registration request] 1. A grounding wire made of a composite material in which a plurality of kinds of metal materials are pressure-welded to each other, and a body-side metal material (40) contacting the vehicle body portion (10) is the same metal as the vehicle body portion (10). (24) terminal
The grounding terminal block for vehicles, wherein the terminal side metal material (42) to which (26) is connected is copper.