JPS61175168A - Controller for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in the housing structure of a control device mounted under the floor of an electric vehicle.

[Technical background of the invention and its problems]

In general, in control devices installed under the floor of a vehicle body, such as a control device, a nono device, an inverter device, etc., magnetic flux from electric components such as an accelerator or the like stored inside the device leaks to the outside of the device, causing the signal system on the ground side to malfunction. Disability is a problem. This can cause serious accidents in electric vehicles, so the control device needed a housing structure that took countermeasures against induction disturbances into consideration. There are two types of magnetic flux that cause this induction disturbance: DC magnetic flux and AC magnetic flux fluctuation due to harmonic components, and the present invention relates to the latter AC magnetic flux fluctuation.

Conventionally, as a countermeasure against induction disturbances, control devices have covered the entire device with a magnetic shielding material and also used a magnetic shielding material for the inspection cover to prevent leakage of magnetic flux from housed electrical components. In addition, among the electrical items stored inside the control equipment, electrical items that generate relatively large magnetic flux such as reactors should be placed as high as possible above the equipment, and the distance from the ground side should be widened to reduce the influence of magnetic flux on the signal system. He also made some efforts in arranging the electrical appliances stored there.

The housing structure of the magnetically shielded control device will be described below with reference to FIGS. 6 to 10. 6 is a front view of the control device, and FIG. 7 is a sectional view of the control device of FIG. 6. In general, a control device is a heavy object containing a large number of electrical components 6 to function as part of a system.

For this reason, the ceiling plate 1, the bottom plate 1a, and the side plate 1b, which are the main frames of the casing 12 of the control device, are required to have the strength to support the entire weight of the device. Therefore, the ceiling plate 1, the bottom plate 1a, and the side plates 1b, which constitute the main frame of the housing 12, are made of strong steel and are joined by welding. Moreover, the ceiling plate 1,
Support frames 4, 4a+4b are provided on the bottom plate 1a and the side plate 1b. The support frames 4.4m and 4b are for supporting the gasket 3, and the support frame 3 and the inspection cover 2.
This combination prevents water, dirt, etc. from entering the inside of the p-device. In this way, the support frame 4 that supports the armpit skin 3
, 4a+4b, unlike the main frame of the housing 12, do not need to support heavy objects and are not required to have strength. However, since steel is used for the ceiling plate 1, bottom plate 1a, and side plate 1b, which are the main frames of the control device housing 12, the support frame is 4.4 m long.
, 4bK are made of the same type of steel so that they can be easily joined to the main frame of the housing 12 by welding. In this way, all the members making up the housing 12 of the control device are made of steel. However, steel, which is a magnetic material, has no magnetic flux shielding effect, and in order to prevent magnetic flux from leaking from the control device, it was necessary to cover the entire device with a magnetic shielding material. This magnetic shield material is made of an aluminum plate, which is a non-magnetic material and a good conductor in consideration of weight reduction, and is generally called a shield plate (hereinafter referred to as a shield plate). Here, shield plates 8.8* and 8
Reference character b is a control device that covers the entire housing 12 and uses an aluminum material for the inspection cover 2 to perform magnetic shielding. Through this magnetic shield, the magnetic flux 7 from the electrical component 6 housed inside the multi-control device is transferred to the shield plate 8.8&+8.
b and inspection cover 2 to shield the inside of the device and prevent leakage to the outside. However, since the support frames 4゜4a and 4b of the conventional control device are made of steel that can be joined to the housing 12 by welding, these support frames 4゜4a+4
b, there is no shielding effect of the magnetic flux 7, and Figs. 8 to 1
As shown in Figure 0, the inspection cover 2, which serves as a magnetic shield, is designed so that the end 2a is located approximately at the center of the gasket 3, and to prevent interference with the housing due to manufacturing errors in the inspection cover 2. A gap 5 is provided between the housing 12 and the housing 12 . For this reason, there is no magnetic shielding in the gap 5 provided around the entire circumference of the inspection cover 2, and in this control device, the magnetic flux 7 from the electrical appliances 6 is transmitted to the support frames 4.4m, 4b and...
This resulted in the Gookin 3 leaking to the outside of the device through the clearance gap 5, causing an induction failure. Also, multiple inspection covers 2
The results were even worse for control devices with As described above, the magnetic shielding of conventional control devices has not been sufficient.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to prevent magnetic flux from leaking from the gap between the inspection cover and the inspection cover without impairing the manufacturability of the housing, and to provide a vehicle with good magnetic shielding. A control device is provided.

[Summary of the invention]

In order to achieve the above object, the present invention includes a support frame that is welded and fixed to the inside of the casing, and a magnetic shield member that is supported by the support member and holds the arm and kin material. Furthermore, it is possible to join the control device to the housing by welding, thereby providing a good magnetic shield to the control device.

[Embodiments of the invention]

The present invention will be described below with reference to an embodiment shown in FIGS. 1 to 5. Note that the same parts as those shown in FIGS. 6 to 10 are given the same numbers, and the explanation thereof will be omitted. 1 and 2 show the use of the support frame 9.9h*9b of the present invention in the housing J2 of the control device. Also,
3 shows the support frame 9 of the ceiling plate 1, FIG. 4 shows the support frame 9b of the side plate 1b, and FIG. 5 shows the support frame 9a of the bottom plate 1m.

The support frames 9.9* and 9b of the present invention are the same as shown in FIGS. 3 to 5. This is due to the combination of a holding body 10 as a magnetic shielding material into which the packing 3 is inserted and held, and a joined body 101 as a support member joined to the housing 12. The holder 10 is made of an aluminum material that can be magnetically shielded, and the joined body 10a is made of a steel material that can be joined and fixed by welding. These holders 10
The joined body 10a is fixed at several points by rivets arranged so that the side of the holding body 10 into which the packing 3 is inserted becomes a flat surface, thereby forming a support frame 9.9 m * 9 b. Here, since steel is used for the joined body 10a of the support frame 9e9m@9b, the housing 1
Support frames 9* are attached to the ceiling plate 1, bottom plate 1a1, and side plate 1b of 0.
m9b is joined and fixed by welding.

Therefore, according to this embodiment, the support frame 9*9 of the present invention
Since the holding body 10 into which the packing 3 of m + 9b is inserted is made of aluminum material capable of magnetic shielding, there is a gap between the housing 12 and the inspection cover 2 as shown in FIGS. 3 to 10. It becomes possible to prevent the magnetic flux 7 from leaking from the magnetic flux 5 to the outside of the device.

In this way, the support frame 9 + 9 m + 9b of the present invention is
The holding body 10 and the joined body 10 are different from the conventional one-piece structure.
By dividing it into two parts and using appropriate materials for each, it is possible to join the housing 10 by conventional welding and to provide magnetic shielding.

A possible method is to use aluminum, which can provide magnetic shielding, for the conventional support frame 4e4at4b. According to this, the same effect as the present invention can be obtained in magnetic shielding, but since the conventional support frame 4g4m+4b shown in Figs. 8 to 10 has an integral structure, aluminum material is used. In this case, it becomes impossible to weld to the housing 12, and the fixing is done by riveting.

This riveting work involves handling relatively heavy members of the casing 12, drilling holes for repeating and riving, and rivet work, resulting in extremely poor workability in manufacturing the casing. From this, the conventional support frame is 4.4m.

Even if magnetic shielding is possible by simply changing the material of 4b, problems remain in manufacturing the housing.

〔Effect of the invention〕

As explained above, according to the present invention, it is possible to prevent leakage of magnetic flux from the packing without impairing the workability when manufacturing the control device casing and the storage space of the device, and it is possible to prevent the leakage of magnetic flux from the packing, thereby providing a good effect on the control device. This has the effect of providing magnetic shielding.

[Brief explanation of drawings]

Figures 1 to 3 show an embodiment of the present invention.
The first is a front view 81 showing the control device, and the second is E in Figure 1.
- A cross-sectional view taken along the g line, Figure 3 is C-C in Figure 6.
4 is a sectional view taken along line C-C in FIG. 6, FIG. 5 is a sectional view taken along line C-C in FIG. 1, and FIG. Figure 10 shows a conventional example.
Figure 6 is a front view showing the control device, and Figure 7 is C- in Figure 6.
8 is a sectional view taken along line C-C in FIG. 6, FIG. 9 is a sectional view taken along line C-C in FIG. 6, and FIG. 10 is a sectional view taken along line C-C in FIG. 6 is a sectional view taken along line CC in FIG. 6. FIG. 2... Inspection cover, 3... Packing material, 5... Gap, 6... Electrical equipment, 9.9*, 9b... Support frame,
10... Magnetic shielding member (holding body), 10a...
Support member (joint body, 12... casing. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 3 Figure 6 Figure 7 Figure 8

Claims (3)

[Claims] (1) A casing that is mounted under the floor of the vehicle body, houses electrical equipment inside, and has an inspection opening on the side, an inspection cover that opens and closes the inspection opening of this casing, and the casing. a packing material that seals a gap between the periphery of the inspection opening and the inspection cover; and a support frame fixed to the inside of the housing and supporting the packing material, wherein the support frame is attached to the housing. A vehicle control device comprising: a support member welded to an inner surface of the vehicle; and a magnetic seal member supported by the support member and holding the packing material. (2) The vehicle control device according to claim 1, wherein the support member is made of steel. (3) The vehicle control device according to claim 1, wherein the magnetic shielding member is made of aluminum.