JP2015159143A - Magnetic shield device for vehicular reactor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a magnetic shield device for a vehicular reactor, capable of effectively shielding magnetic leakage flux from the vehicular reactor and materializing a light weight reduction, and excellent in transportability and workability for mounting.SOLUTION: In a magnetic shield device for a vehicular reactor, a housing case is disposed between a vehicle body and the vehicular reactor suspended from the vehicle body while covering a top face side of the vehicular reactor, a support member is attached to the vehicular body while supporting the housing case, a magnetic shield plate is housed in the housing case and formed by alternately laminating a plurality of plates having difference in magnetic permeability between each of them, a side shield plate is attached to the support member and disposed apart from a side face side of the vehicular reactor so as to cover the side face side thereof, furthermore, each of the housing case, the support member, the magnetic shield plate, and the side shield plate is formed so as to be able to separately divided and assembled, and as to the magnetic shield plate, each of a plurality of the plates can be separately divided and assembled.

Description

  Embodiments described herein relate generally to a magnetic shield device for a vehicle reactor.

  In order to smooth the current flowing from the main converter to the main motor in the main circuit of the railway vehicle, the reactor used for the railway vehicle is applied with a filter reactor and installed suspended under the vehicle body. . In addition, since such a vehicle reactor is suspended directly under the floor surface of the vehicle, in order to prevent the leakage magnetic flux from the coil inside the reactor from increasing into the vehicle, Further, a magnetic shield plate made of a magnetic material plate such as iron is provided. In particular, in recent years, from the viewpoint of preventing adverse effects on the train equipment in the vehicle, ingenuity has been made to shield the leakage magnetic flux from the reactor into the vehicle to the maximum extent.

  Conventionally, a magnetic shield plate provided between a vehicle body and a reactor for a vehicle is usually configured as an integrated structure in which iron plates are singly or double-layered, and is designed in consideration of the amount of leakage magnetic flux. Depending on the amount of magnetic flux, the weight and dimensions may increase.

  Further, in recent years, with the energy saving of railway vehicles, the regenerative braking ability has been improved and the regenerative current has also increased. And since the increased electric current flows into a reactor, there exists a possibility of causing the increase in the amount of leakage magnetic flux. For this reason, the magnetic shield plate is required to improve magnetic flux shielding characteristics while suppressing an increase in weight and size and reducing the weight.

  On the other hand, since the magnetic shield plate having the conventional configuration described above is a single plate configuration with an iron plate or an integrated configuration by superposition of iron plates, when the magnetic flux shielding characteristic is improved as it is, the thickness dimension thereof is Increases weight and weight.

JP 2006-032444 A

  The problem to be solved by the present invention is to provide a magnetic shield device for a reactor for a vehicle that can effectively shield a magnetic flux leakage from the reactor for a vehicle, can be reduced in weight, and has excellent transportability and mounting workability. It is to be.

The magnetic shield device for a vehicle reactor according to the embodiment includes a housing case, a support member, a magnetic shield plate, and a side shield plate. The storage case is disposed between the vehicle body and the vehicle reactor suspended from the vehicle body, and covers the upper surface side of the vehicle reactor. The support member is attached to the vehicle body and supports the storage case. The magnetic shield plate is housed in the housing case, and a plurality of plate materials having a magnetic permeability difference are alternately laminated. The side shield plate is attached to the support member, and is disposed so as to be separated from the side surface side of the vehicle reactor and cover the side surface side.
Further, each of the housing case, the support member, the magnetic shield plate, and the side shield plate is configured to be separated and assembled. In addition, the magnetic shield plate is configured such that each of the plurality of plate members can be separated and assembled separately.

BRIEF DESCRIPTION OF THE DRAWINGS The whole block diagram which shows the magnetic shield apparatus for reactors of vehicles of 1st Embodiment. The top view which shows the magnetic shield apparatus for vehicle reactors of 1st Embodiment shown in FIG. The side view which expands and shows the supporting member which the magnetic shield apparatus for vehicle reactors of 1st Embodiment shown in FIG. 2 has. The graph which compares the leakage magnetic flux at the time of applying the magnetic shielding board which the magnetic shielding apparatus for vehicle reactors of 1st Embodiment has, and the leakage magnetic flux at the time of applying the conventional magnetic shielding board. The leakage flux when the magnetic shield plate of the magnetic shield device for a vehicle reactor according to the first embodiment is applied and the leakage flux when the conventional magnetic shield plate is applied are the same in both magnetic shield plates. Graph to compare with. Sectional drawing which shows in detail the laminated structure of the magnetic shielding board in the magnetic shielding apparatus for reactors of a vehicle of 2nd Embodiment.

Hereinafter, a magnetic shield device for a vehicle reactor according to an embodiment will be described with reference to the drawings.
In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between the thickness and the planar dimensions, the ratio of the thickness of each layer, and the like may differ from the actual ones. Therefore, specific thicknesses and dimensions should be determined in consideration of the following description. It goes without saying that the drawings include parts having different dimensional relationships and ratios. Further, the embodiment described below exemplifies an apparatus and method for embodying the technical idea of the present embodiment, and the material, shape, structure, arrangement, etc. of the component parts are as follows. Not specific.

(First embodiment)
Hereinafter, a magnetic shield device for a vehicle reactor according to a first embodiment will be described with reference to FIGS. 1 to 3.
FIG. 1 is a schematic diagram showing an overall configuration of a magnetic shield device for a vehicle reactor (hereinafter, may be abbreviated as a magnetic shield device) 1 according to a first embodiment. FIG. 2 is a plan view of the magnetic shield device 1 shown in FIG. FIG. 3 is an enlarged side view showing the support member (suspending member) 3 of the magnetic shield device 1.

  A magnetic shield device 1 for a vehicle reactor is supported and installed in a suspended state under a vehicle body 70 in a railway vehicle, and includes a housing case 2, a support member 3, a magnetic shield plate 4, and a side shield plate 5. And is generally configured. The housing case 2 is disposed between the vehicle body 70 and the vehicle reactor 6 suspended from the vehicle body 70, and is disposed so as to cover the upper surface 61 side of the vehicle reactor 6. The support member 3 is a member that is attached to the vehicle body 70 and supports the housing case 2 in a suspended state. The magnetic shield plate 4 is housed in the housing case 2, and a plurality of plate materials (see reference numerals 4a and 4b in FIG. 1) having a magnetic permeability difference between them are alternately stacked. The side shield plate 5 is attached to the support member 3 and is disposed so as to be separated from the side surface 62 side of the vehicle reactor 6 and cover the side surface 62 side.

  And the magnetic shielding apparatus 1 of this embodiment is comprised so that each of the accommodation case 2, the supporting member 3, the magnetic shield board 4, and the side shield board 5 can be separated and assembled separately. In addition, the magnetic shield plate 4 is configured such that each of a plurality of plate members, that is, a steel plate 4a and a resin plate 4b whose details will be described later, can be separated and assembled separately.

Furthermore, this embodiment demonstrates the example in which the storage case 2 with which the magnetic shield apparatus 1 is equipped is formed from the iron plate. In the present embodiment, the magnetic shield plate 4 includes at least a steel plate 4a and a resin plate 4b having a magnetic permeability difference between them as the plurality of plate materials described above, and the steel plates 4a and the resin plates 4b are alternately arranged. An example of stacking will be described.
With the above configuration, the magnetic shield device 1 shields the magnetic flux leaking from the vehicle reactor 6 and leaking to the vehicle body 70 side, and suppresses the magnetic flux from leaking into the train vehicle.

  The storage case 2 is a box-shaped member that stores a magnetic shield plate 4 made of a plurality of plates, which will be described in detail later, in a storage portion (inside) 21, and is installed in a state suspended from the vehicle body 70 by the support member 3. The Thereby, the storage case 2 is arrange | positioned so that it may space apart by the predetermined distance between the vehicle body 70 and the reactor 6 for vehicles, as shown in FIG.

  As a material forming the storage case 2, for example, a general metal material as a magnetic material can be used without any limitation. The storage case 2 is preferably formed in a box shape using a plate-shaped iron material (iron plate) in consideration of cost. In the example shown in FIG. 1, the storage case 2 is formed as a hollow box-shaped member in which two of the four side surfaces are open, and is substantially rectangular in plan view as shown in FIG. 2. It is made into a shape.

  Furthermore, in the storage case 2 shown in FIG. 1 and the like, insertion holes 2a are formed at a plurality of locations along both side surfaces that are not open and corresponding to the upper and lower positions of the storage portion 21. In the example shown in FIG. 2, it is formed at 10 locations each in a state of being aligned in one row along both side surfaces. A mounting bolt 22 is inserted into the insertion hole 2a so as to penetrate the housing portion 21 vertically, and a lower end portion 22a of the mounting bolt 22 is fixed to a mounting hole 31b formed in the support member 3 described later.

The support member 3 is attached to a vehicle body 70 of a railway vehicle and supports the storage case 20 in a suspended state as shown in FIG. 1. In the illustrated example, the support member 3 is opened to the support case 2 that is a support target. It is provided at two places so as to support the opposite side surfaces.
Further, in the example described in this embodiment, the support member 3 has a support base 31 formed in a substantially L-shaped cross section and is attached to the vehicle body 70 by a suspension bolt 32. A portion of the base that is substantially L-shaped in the support base 31 is formed as an attachment portion 31 a to which the storage case 2 is attached.
In the present embodiment, as shown in the plan view of FIG. 2, the support member 3 is formed in an elongated shape, and the suspension bolts 32 are attached at three locations along the longitudinal direction of the support member 3. The suspension members 32 are attached to the vehicle body 70 by attaching the suspension bolts 32 to a total of six locations in the support member 3.

  A plurality of mounting holes 31b are formed in the mounting portion 31a, and the mounting bolts 22 for fixing the storage case 2 are fixed as described above. In the example shown in FIG. 2, ten mounting holes 31b are formed on the mounting portion 31a in a line. As shown in FIGS. 1 and 2, the housing case 2 is fixed to the support member 3 at a total of 20 positions by fixing the mounting bolts 22 to the mounting holes 31 b.

  Since the support member 3 configured as described above supports the housing case 2, it is preferable that the attachment portion 31 a has flatness. Furthermore, the support member 3 has a configuration in which the position of the suspension bolt 32 can be appropriately determined in accordance with the mounting hole 71 on the vehicle body 70 side as shown in FIG. It is preferable to do.

  Further, the support member 3 is provided with an attachment arm 33 on the lower surface side of the support base 31 as shown in FIG. 1 and as shown in detail in FIGS. The mounting arm 33 is for fixing the side shield plate 5 to be described later in detail to the support member 3, and as shown in FIG. 3, the fixing portion 33A and the arm portion 33B are continuously formed so as to be bent. Further, it is configured as a member having a substantially U-shaped cross section. Here, a fixing hole 33a for fixing the mounting arm 33 to the support base 31 by screwing or the like is formed in the fixing portion 33A, and the side shield plate 5 is attached to the mounting arm 33 in the arm portion 33B. A mounting hole 33b for mounting by screwing or the like is formed.

  In this embodiment, the mounting arm 33 is described as being attached to the support base 31 by means such as screwing, but the mounting arm 33 is formed integrally with the support base 31. Also good.

  The magnetic shield plate 4 is housed in the housing case 2 configured as described above, and is fixed to the vehicle body 70 in a suspended state by the support member 3 together with the housing case 2. Further, as described above, the magnetic shield plate 4 described in the present embodiment includes at least a steel plate 4a and a resin plate 4b having a magnetic permeability difference between them as a plurality of plate materials, and these are alternately laminated. It has been configured. Moreover, the several board | plate material which comprises the magnetic shield board 4 of this embodiment can be made into a substantially rectangular shape by planar view similarly to the case where the magnetic shield board 4 is accommodated.

  The steel plate 4a and the resin plate 4b only have to be laminated in at least one set, but higher magnetic shielding properties can be obtained by laminating in a plurality of sets within a range in which the mass of the entire magnetic shield plate 4 is not increased excessively. can get. That is, in the example shown in FIG. 1, two steel plates 4 a and two resin plates 4 b are alternately laminated to constitute a total of four, but the magnetic flux leaking from the vehicle reactor 6 and the entire magnetic shield plate 4 are configured. It is possible to further increase the number of layers while taking into account the mass.

In addition, as the steel plate 4a, a steel plate material conventionally used as a shield plate material in this field can be employed without any limitation. For example, a steel plate or a silicon steel plate, which is a metal magnetic material having a high magnetic permeability, can be used. Can be adopted.
Further, the material or the like of the resin plate 4b is not particularly limited, and a resin material can be selected in consideration of its strength, durability, and the like.

  As described above, the magnetic shield plate 4 of the present embodiment exhibits a remarkable magnetic shielding effect by combining the steel plate 4a made of a material with high magnetic permeability and the resin plate 4b made of a nonmagnetic material. As described above, by applying the resin plate 4b to at least a part of the plurality of plate members constituting the magnetic shield plate 4, for example, even when the steel plate 4a is thinly formed, a sufficient magnetic shield effect can be obtained. . Thereby, since the mass which the steel plate 4a occupies in the magnetic shield plate 4 can be reduced, the magnetic shield plate 4 can be reduced in weight.

  That is, the magnetic shield plate 4 is configured by alternately laminating steel plates 4a and resin plates 4b having a magnetic permeability difference, so that, for example, even when the magnetic shield plate 4 has the same mass as a conventional magnetic shield plate, The shield effect is further enhanced. Therefore, for example, when the magnetic shield plate 4 is configured with the same mass as the conventional one, a remarkable magnetic shielding effect can be obtained, but even when the magnetic shield plate 4 is configured to be lighter than the conventional one, A sufficiently superior magnetic shielding effect can be obtained.

  Further, the magnetic shield plate 4 of the present embodiment can be designed by appropriately selecting the material and the number of the magnetic shield plates 4 made of a plurality of plate materials based on the strength of magnetic flux leaking from the vehicle reactor 6. Effective weight reduction and cost reduction can be achieved.

As described above, the side shield plate 5 is attached to the support member 3 and is disposed so as to cover the side surface 62 while being separated from the side surface 62 side of the vehicle reactor 6. In the present embodiment, the side shield plate 5 is attached to an attachment arm 33 fixed to the support base 31 of the support member 3 by screwing.
The side shield plate 5 is a member that shields magnetic flux leaking from the side surface 62 of the vehicle reactor 6 in addition to shielding magnetic flux leaking from the upper surface 61 side of the vehicle reactor 6 by the magnetic shield plate 4 described above. For example, it can be composed of an iron plate or the like.

  The side shield plate 5 of the present embodiment is configured such that the entire side shield plate 5 is separated from the side surface 62 by a certain distance by attaching the side shield plate 5 so that the front end 52 of the side shield plate 5 faces vertically downward. However, it is not limited to this. For example, the side shield plate 5 of the present embodiment is provided so that the distance from the side 62 of the vehicle reactor 6 can be arbitrarily adjusted. By separating to an appropriate position, it is more preferable from the viewpoint of further improving the magnetic shield effect.

Here, the side shield plate 5 of the example shown in FIG. 1 is attached to the side surface 62 so as to be inclined at a predetermined angle with the attachment portion 51 to the support member 3 as a fulcrum, so It is attached so as to gradually move away from. In such a case, as in the example shown in FIGS. 3A and 3B, the mounting arm 33 to which the mounting portion 51 of the side shield plate 5 is mounted has a cross-sectional shape having a predetermined opening angle α. By forming it in the shape of a letter, the side shield plate 5 can be attached at an arbitrary angle and at an arbitrary distance from the side surface 62. That is, in FIG. 3A, since the opening angle α of the mounting arm 33 is larger than that in the case of FIG. 3B, the angle with respect to the side surface 62 of the vehicle reactor 6 is increased and separated. It can be used to increase the distance. On the other hand, in FIG. 3B, since the opening angle α is smaller than that in the case of FIG. 3A, the angle with respect to the side surface 62 of the vehicle reactor 6 is reduced to increase the separation distance. It can be used to make it smaller.
In this embodiment, the side shield plate 5 can be screwed and fixed to the mounting arm 33 by using the mounting hole 33 b formed in the mounting arm 33 and a bolt (not shown).

  As described above, the side shield plate 5 is configured such that the angle and distance between the side shield plate 5 and the side 62 of the vehicle reactor 6 can be arbitrarily adjusted, so that the magnetic shield effect is further improved. A sufficient magnetic shielding effect can be obtained even when the thin plate 5 is configured to be thin and light, which is advantageous in reducing the overall weight of the magnetic shielding device 1.

  In the magnetic shield device 1 of the present embodiment, each of the above-described configurations, that is, the storage case 2, the support member 3, the magnetic shield plate 4, and the side shield plate 5 are configured to be separately separable. Is preferred. Furthermore, in the present embodiment, it is more preferable that the magnetic shield plate 4 is configured such that each of the plurality of plate members, that is, each of the steel plate 4a and the resin plate 4b can be separated and assembled.

  As described above, most of the members constituting the magnetic shield device 1 can be separated and assembled so that they can be transported in a lightweight state divided into parts. Therefore, for example, after the magnetic shield device 1 is manufactured, the transportability when delivered to a vehicle assembly factory or the like is improved, and since the delivery is performed in units of lightweight parts, the workability during assembly is also significantly improved. To do.

  Next, a method of manufacturing the magnetic shield device 1 for a vehicle reactor according to the present embodiment, that is, a method of assembling in a vehicle factory or the like when the magnetic shield device 1 is transported in a divided state will be described.

First, while storing the some steel plate 4a in the accommodating part 21 of the accommodation case 2, the resin board 4b is inserted between each steel plate 4a, and these are laminated | stacked alternately, and the magnetic shielding board 4 is assembled.
Next, the storage case 2 in which the magnetic shield plate 4 is stored is placed on the mounting surfaces 31 a of the two support base members 31 constituting the support member 3 so that the pair of side surfaces of the storage case 2 are supported. To do. Next, the housing case 2 is supported by inserting the mounting rod 22 into the insertion hole 2 a formed in the housing case 2 and inserting the lower end portion 22 a of the mounting rod 22 into the mounting hole 31 b formed in the support base 31. It is set as the state fixed to the base material 3.

Next, the suspension bolt 32 is fixed to the mounting hole 71 of the vehicle body 70 of the support member 3 to which the housing case 2 is fixed.
Next, the two side shield plates 5 are fixed to the mounting arm 33 that is previously mounted on the support base 31 in the support base 3 using bolts and mounting holes 33b (not shown).
The magnetic shield device 1 of the present embodiment can be obtained by assembling the parts that are divided by the above procedure.

The magnetic shield effect when the magnetic shield plate 40 provided in the magnetic shield device of the present embodiment is used will be described below with reference to the graphs of FIGS. 4 and 5. FIG. 4 is a graph comparing the leakage flux when the magnetic shield plate 40 of the magnetic shield device of the first embodiment is applied and the leakage flux when the conventional magnetic shield plate is applied. FIG. 5 shows that the leakage flux when the magnetic shield plate 40 of the magnetic shield device of the first embodiment is applied and the leakage flux when the conventional magnetic shield plate is applied are the same for all the magnetic shield plates. It is a graph compared with the case where it is set as the mass. 4 and 5, the vertical axis represents the leakage magnetic flux, the horizontal axis represents the distance from the coil center of the reactor, and the center line on the horizontal axis represents the coil central part of the reactor. is there. Moreover, in the graphs of FIGS. 4 and 5, a curve 1 represents a leakage flux when a conventional magnetic shield plate made of a thick iron plate is applied, and a curve 2 represents the first embodiment. This is a magnetic flux leakage when the magnetic shield plate 40 is applied. Further, in the graph of FIG. 5, the magnetic shield plates of the conventional and the first embodiment are compared with the same mass.
In this analysis, the leakage magnetic flux is compared at the floor surface position when the reactor is 3 mH and the distance between the magnetic shield plate and the floor surface is 154 mm.

FIG. 4 compares the conventional magnetic shield plate and the magnetic shield plate of the first embodiment when the leakage magnetic flux is 1 mT or less at the floor surface position. The conventional configuration is an iron plate, and The configuration is a laminated configuration of 14 layers of steel plate and resin plate, but the configuration of the first embodiment is about 7% lighter than the conventional configuration.
As shown in the graph of FIG. 4, the amount of magnetic flux leakage when the magnetic shield plate 40 of the present embodiment is applied and the amount of magnetic flux leakage when the conventional magnetic shield plate is applied are equal on average. However, this is considered due to the fact that the conventional magnetic shield plate has a large mass and a thick structure. Here, by providing the magnetic shield plate 40 of the present embodiment, the magnetic flux is effectively shielded particularly in the position where the magnetic flux is strongest in the vicinity of the coil center, and flat leakage magnetic flux characteristics in the coil plane direction. It turns out that it is.

  On the other hand, as shown in the graph of FIG. 5, when the same experiment was performed by adjusting the magnetic shield plate 40 of the present embodiment and the magnetic shield plate of the conventional configuration to the same mass, the present embodiment It can be seen that the magnetic shield plate 40 of the embodiment is reduced not only in the vicinity of the center of the coil of the reactor, but overall, the leakage magnetic flux is reduced as compared with the conventional product. From this experimental result, the magnetic shield plate is secured while ensuring a sufficient magnetic shield effect by appropriately setting the material and quantity of the plurality of plate members constituting the magnetic shield plate while taking into account the amount of magnetic flux leaked from the reactor. It is clear that the weight can be reduced.

As described above, the magnetic shield device 1 for a vehicle reactor according to the first embodiment described above includes the housing case 2, the support member 3, the magnetic shield plate 4, and the side shield plate 5. The configuration is adopted. More specifically, the magnetic shield plate 4 is housed in the housing case 2, and a plurality of plate materials having a magnetic permeability difference between them are alternately laminated. The side shield plate 5 is attached to the support member 3 and is disposed so as to cover the side surface 62 of the vehicle reactor 6. Furthermore, in the present embodiment, each of the housing case 2, the support member 3, the magnetic shield plate 4, and the side shield plate 5 is configured so as to be separated and assembled, and the magnetic shield plate 4 is configured so that each of the plurality of plate members is separated. It can be separated and assembled separately.
In the present embodiment, the magnetic shield plate 4 has a configuration in which a plurality of plate materials having magnetic permeability differences are alternately laminated, so that magnetic flux leaking from the vehicle reactor 6 can be reduced while reducing the weight of the magnetic shield plate 4. Can be effectively shielded. Further, by arranging the side shield plate 5 so as to cover the side surface 62 of the vehicle reactor 6, it is possible to more effectively shield the magnetic flux leaking from the vehicle reactor 6. Further, the housing case 2, the support member 3, the magnetic shield plate 4 and the side shield plate 5 can be divided and assembled, and the plurality of plate members of the magnetic shield plate 4 can be divided and assembled. Each part can be transported in units.

Due to the above action, the leakage magnetic flux from the vehicle reactor 6 can be effectively shielded, so that the effect of reliably preventing the magnetic flux from leaking into the vehicle of the railway vehicle can be obtained. In addition, since each part can be transported in a lightweight state by being divided into parts, for example, the transportability from the manufacturing factory of the magnetic shield device 1 to the vehicle manufacturing structure, maintenance shop, etc. is improved. In addition, an effect of improving the workability of attachment to the vehicle body 70 can be obtained.
Therefore, it is possible to provide the magnetic shield device 1 for a vehicle reactor that can effectively shield the magnetic flux leakage from the vehicle reactor 6 and can be reduced in weight and has excellent transportability and mounting workability. .

(Second Embodiment)
Next, a magnetic shield device for a vehicle reactor according to a second embodiment will be described with reference to FIG. FIG. 6 is a cross-sectional view showing in detail the laminated configuration of the magnetic shield plate 40 in the magnetic shield device for a vehicle reactor (hereinafter, may be abbreviated as a magnetic shield device) of the second embodiment.
In the following description, the same components as those described in the first embodiment with reference to FIGS. 1 to 3 are denoted by the same reference numerals, and detailed description thereof is omitted.

  Although not shown, the magnetic shield device of the second embodiment is common to the magnetic shield device 1 of the first embodiment in that the housing case 2, the support member 3, and the side shield plate 5 are provided. This configuration is also common in that the magnetic shielding plate is accommodated in the accommodation case 2.

On the other hand, the magnetic shield device of the second embodiment is provided in the magnetic shield device 1 of the first embodiment in that the magnetic shield plate 40 housed in the housing case 2 has the following configuration. The magnetic shield plate 4 has a different configuration.
That is, in the magnetic shield device of this embodiment, as shown in FIG. 6, the magnetic shield plate 40 further includes, as a plurality of plate members, a second steel plate 4 c having a permeability difference with respect to the steel plate 4 a and the resin plate 4 b. The resin plate 4b is inserted between the steel plate 4a and the second steel plate 4c. In the present embodiment, for example, a silicon steel plate can be used as the steel plate 4a, and a steel plate can be used as the second steel plate 4c.

  In the present embodiment, as with the magnetic shield device 1 of the first embodiment, each of the housing case 2, the support member 3, the magnetic shield plate 40, and the side shield plate 5 is configured to be separately assembled. The magnetic shield plate 40 is configured so that it can be assembled separately by separating the steel plate 4a, the resin plate 4b, and the second steel plate 4c.

  Here, in the example shown in FIG. 6, for the sake of illustration, the insertion hole 2 a formed in the housing case 2 shown in FIG. 1 and through which the mounting bolt 22 is inserted is omitted.

  As shown in FIG. 6, the magnetic shield plate 40 includes a steel plate 4a, a resin plate 4b, and a second steel plate 4c, which are laminated in this order from the side of the vehicle body 70, and a laminated body made of these three plates. However, it is configured to be stacked in a total of three sets, but is not limited thereto, and may be configured from, for example, one set of laminated bodies.

  According to the magnetic shield device of the present embodiment, the magnetic shield plate 40 having the above configuration is provided, so that the magnetic flux leaking from the vehicle reactor 6 can be further improved as compared with the magnetic shield device 1 of the first embodiment. The magnetic shielding effect that can be shielded is obtained. This is because the magnetic shield plate 40 includes the second steel plate 4c, and the resin plate 4b, which is a nonmagnetic material, is interposed between the steel plate 4a and the second steel plate 4c made of a material having high magnetic permeability. It exhibits a remarkable magnetic shielding effect.

  That is, in this embodiment, since the magnetic shield plate 40 is provided, a sufficient magnetic shield effect can be obtained even when the steel plate 4a and the second steel plate 4c are thinly formed. Therefore, the steel plate 4a and the second steel plate are obtained. The mass of 4c can be reduced, and the magnetic shield plate 40 can be reduced in weight. Thereby, even if the magnetic shield plate 40 has the same mass as the conventional magnetic shield plate, the magnetic shield effect is further enhanced. A magnetic shielding effect can be obtained. On the other hand, even when the magnetic shield plate 40 is configured to be lighter than the conventional one, a sufficiently superior magnetic shield effect can be obtained compared to the conventional one.

  In addition, the magnetic shield plate 40 of the present embodiment is similar to the first embodiment in that the material and number of magnetic shield plates 40 made of a plurality of plate materials are determined based on the strength of magnetic flux leaking from the vehicle reactor 6. Since it can design by selecting suitably, it becomes possible to aim at effective weight reduction and cost reduction.

According to the magnetic shield device for a vehicle reactor of the second embodiment described above, as described above, the magnetic shield plate 40 is added to the steel plate 4a and the resin plate 4b as a plurality of plate materials, and to these plate materials. And a second steel plate 4c having a magnetic permeability difference, and a resin plate 4b is interposed between the steel plate 4a and the second steel plate 4c.
In the present embodiment, the magnetic shield plate 40 has a configuration in which a steel plate 4a, a resin plate 4b, and a second steel plate 4c each having a magnetic permeability difference are laminated in this order from the vehicle body 70 side. Magnetic flux leaking from the vehicle reactor 6 can be more effectively shielded while reducing the weight of the vehicle 40. Further, since each of the plurality of plate members of the magnetic shield plate 40 can be divided and assembled, it can be transported in units of light parts.

With the above action, the leakage magnetic flux from the vehicle reactor 6 can be more effectively shielded, and the effect of more reliably preventing the magnetic flux from leaking into the vehicle of the railway vehicle can be obtained. Moreover, since it becomes possible to divide each part and transport each part in a lightweight state, as in the case of the magnetic shield device 1 of the first embodiment, the transportability is improved and the installation work is performed. The effect which improves property is acquired.
Therefore, it is possible to provide a magnetic shield device for a vehicle reactor that can effectively shield the magnetic flux leakage from the vehicle reactor 6 and can be reduced in weight and has excellent transportability and mounting workability.

According to at least one embodiment described above, a magnetic shield plate formed by alternately laminating a plurality of plate members having magnetic permeability differences between each other, and a side shield disposed so as to cover the side surface of the vehicle reactor In addition, the storage case, support member, magnetic shield plate and side shield plate can be separated and assembled separately, and the magnetic shield plate can be separated and assembled by separating each of the plurality of plate materials. Configured. Thereby, the leakage magnetic flux from the vehicle reactor can be effectively shielded, and the magnetic flux can be reliably prevented from leaking into the vehicle of the railway vehicle. Moreover, since it becomes possible to divide each part into parts and transport each part in a lightweight state, the transportability is improved and the mounting workability is also improved.
Therefore, it is possible to provide a magnetic shield device for a vehicle reactor that has a high magnetic shielding property against leakage magnetic flux from the vehicle reactor, can be reduced in weight, and has excellent transportability and mounting workability.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 ... Magnetic shield apparatus (magnetic shield apparatus) for reactors for vehicles, 2 ... Storage case, 21 ... Storage part, 22 ... Mounting bolt, 22a ... Lower end part, 2a ... Insertion hole, 3 ... Support member, 31 ... Support base material 31a ... mounting portion, 31b ... mounting hole, 32 ... suspension bolt, 33 ... mounting arm, 33A ... fixing portion, 33B ... arm portion, 33a ... fixing hole, 33b ... mounting hole, 4, 40 ... magnetic shield plate, 4a ... Steel plate (magnetic shield plate), 4b ... Resin plate (magnetic shield plate), 4c ... Second steel plate (magnetic shield plate), 5 ... Side shield plate, 51 ... Mounting part (side shield plate), 52 ... Tip , 6 ... Reactor for vehicle, 61 ... Upper surface, 62 ... Side surface, 70 ... Car body, 71 ... Mounting hole (vehicle body).

Claims (4)

A storage case disposed between the vehicle body and the vehicle reactor suspended from the vehicle body, and disposed so as to cover the upper surface side of the vehicle reactor and away from the upper surface side;
A support member attached to the vehicle body and supporting the housing case;
A magnetic shield plate that is housed in the housing case and in which a plurality of plate members having a magnetic permeability difference are alternately stacked;
A side shield plate attached to the support member and disposed so as to cover the side surface side of the vehicle reactor.
Each of the housing case, the support member, the magnetic shield plate, and the side shield plate is configured to be separated and separately assembled, and the magnetic shield plate is configured so that each of the plurality of plate members is respectively A magnetic shield device for a reactor for a vehicle configured to be separated and assembled separately. The storage case is formed of an iron plate;
The magnetic shield plate includes at least a silicon steel plate and a resin plate having a magnetic permeability difference between each of the plurality of plate members, and the silicon steel plate and the resin plate are alternately laminated. The magnetic shielding apparatus for reactors for vehicles as described in 2.   The magnetic shield plate further includes, as the plurality of plate members, an iron plate having a magnetic permeability difference with respect to the silicon steel plate and the resin plate, and the resin plate is interposed between the silicon steel plate and the iron plate. The magnetic shield device for a vehicle reactor according to claim 2.   The magnetic shield device for a vehicle reactor according to any one of claims 1 to 3, wherein the side shield plate is provided so as to be capable of arbitrarily adjusting a separation distance from a side surface of the vehicle reactor. .

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