JP2940228B2 - Mounting structure of vehicle transformer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure of a vehicle transformer which is hung below the floor of an electric vehicle.

[0002]

2. Description of the Related Art FIG. 5 is a front view showing the structure of a conventional transformer, and FIG. 6 is a side view thereof. In FIGS. 5 and 6, the iron core 1 around which the wire loop 2 is wound is fastened by an iron core fastening 3 and a fastening bolt 5. The iron core clamp 3 is made of a metal piece having an L-shaped cross section. One of the legs has a hole for inserting the tightening bolt 5, and the other leg has mounting holes for mounting a transformer to a box frame. 4 are provided. In this case, the length E of the iron core clamp 3 is generally made substantially the same as the outer width dimension F of the wire loop 2.

FIG. 7 is a front view showing a mounting structure in which the above-described transformer is mounted under the floor of an electric car by hanging it. FIG.
It is the side view seen from the A line. 7 and 8,
A pair of main frames 6 forming a box frame is mounted under the floor (not shown) of the electric vehicle. Further, a frame 7 is welded over the pair of main frames 6, and a transformer 8 configured as described with reference to FIGS. 5 and 6 is mounted on the frame 7 with mounting bolts 9.

[0004]

In such a conventional mounting structure of a transformer for a vehicle, since a tensile force due to the weight of the transformer 8 is applied to the mounting bolt 9 for mounting the transformer, the mounting bolt having a large size in terms of strength. And when the transformer 8 is mounted on the frame 7, it is necessary to support the weight of the transformer 8 from below until the tightening bolts 9 are completely tightened. Furthermore, a frame 7 serving to suspend the transformer 8 is required, and the weight of the box frame increases.

An object of the present invention is to solve the above-mentioned problems and to provide a vehicle transformer mounting structure having a simple structure.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a structure for mounting a transformer for a vehicle which is hung under the floor of an electric vehicle, wherein a box frame is formed under the floor of the electric vehicle. Attach the main frame and form a core tightening bracket for tightening the core of the transformer with a length larger than the outer width of the wire wound around the core, and attach both ends of the core tightening bracket to the main frame. Shall be. In this case, the fastening between the iron core fastener and the main frame is performed by bolts.

[0007]

According to the structure of the present invention, the transformer has a core clamp having a length larger than the outer width of the wire loop, and is provided on the upper surface of the main frame constituting the box frame suspended under the floor of the electric car. Since the transformer is mounted so as to be directly mounted, no tensile force due to the weight of the transformer is applied to the mounting bolts of the transformer. Also, there is no need to support the transformer from below when installing the transformer.

[0008]

FIG. 1 is a front view showing an example of a transformer for implementing a vehicle transformer mounting structure according to the present invention, and FIG. 2 is a side view thereof. In FIGS. 1 and 2, the length C of the core tightening bracket 10 for tightening the core 1 around which the wire 2 is wound is made longer than the outer width dimension D of the wire 2 by an amount necessary for mounting the transformer. A mounting hole 4 is provided in this portion. The iron core tightening fitting 10 is a metal piece having an L-shaped cross section, and includes a part for tightening the iron core and a part attached to the main frame 6 constituting the box frame.

FIG. 3 is a front view showing an embodiment of a mounting structure for a vehicle transformer according to the present invention, and FIG. 4 is a side view of FIG. 3 as viewed from the line BB. 3 and FIG. 4, FIG. 1 and FIG.
The transformer 11 configured as described above is mounted with mounting bolts 9 by directly placing the iron core fastener on the upper surface of the main frame 6 constituting a box frame suspended under the floor of the electric vehicle.

The mounting structure according to the present invention can be applied not only to a transformer but also to a mounting structure for reactors.

[0011]

According to the present invention, since no tensile force is applied to the mounting bolt for mounting the transformer, the mounting bolt can be made smaller. In addition, when the transformer is mounted on the main frame, it is not necessary to support the transformer from below until the mounting bolts are completely tightened, so that the mounting workability is improved. Further, since a frame used for suspending a conventionally used transformer is not required, the weight can be reduced accordingly.

[Brief description of the drawings]

FIG. 1 is a front view showing the structure of a transformer when the vehicle transformer mounting structure of the present invention is implemented.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view showing an embodiment of the mounting structure of the vehicle transformer according to the present invention.

FIG. 4 is a side view of FIG. 3 taken along line BB.

FIG. 5 is a front view showing the structure of a conventional vehicle transformer.

FIG. 6 is a side view of FIG.

FIG. 7 is a front view showing a mounting structure of a conventional vehicle transformer.

FIG. 8 is a side view of FIG. 7 taken along line AA.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Iron core 2 Wire ring 4 Mounting hole 5 Tightening bolt 6 Main frame 9 Mounting bolt 10 Iron core tightening bracket 11 Transformer

Claims (2)

(57) [Claims] In a mounting structure for a transformer for a vehicle which is hung below the floor of an electric car, an iron core fastening fitting for mounting a main frame constituting a box frame under the floor of an electric car and tightening an iron core of the transformer is provided. A transformer mounting structure for a vehicle, wherein the length is formed to be larger than the outer width of a wire loop wound around an iron core, and both ends of the iron core fastener are attached to the main frame. 2. The vehicle transformer according to claim 1, wherein both ends of the iron core fastener are mounted by bolts on the upper surface of a main frame constituting a box frame suspended below the floor of the electric vehicle. Mounting structure.