JP6013775B2 - Power converter for vehicle - Google Patents

Description

Embodiments described herein relate generally to a vehicle power converter.

  The railway vehicle is provided with a power conversion device that generates electric power for the railway vehicle to travel. A semiconductor element, which is a main component for generating electric power, is provided in the power conversion device. An alternating current is generated by the switching operation of the semiconductor element, but heat is generated due to loss when the switching operation of the semiconductor element is performed.

  The heat generated in the power converter must be dissipated to the outside so that the semiconductor element does not exceed the temperature tolerance. Therefore, the semiconductor element is provided with a cooling unit. The cooling unit includes a cooling fin that receives a traveling wind generated when traveling, and a flange that serves as a fixed frame of the cooling fin.

  Such a cooling unit is often attached to the bottom side (rail side) of the power converter, and there is a risk of a serious accident if it falls off. Therefore, as a structure for preventing the cooling unit of the power conversion device from falling off, there is a method in which the attachment is fixed with a bottle or the like (eg, Patent Document 1).

JP 2010-1111197 A

However, in the conventional method, there are many parts for fixing the casing and the cooling unit of the power conversion device, which is complicated, so that there is a problem that the mounting is difficult.

The problem to be solved by the present invention is to provide a vehicular power conversion device that can prevent the cooling unit and other electrical components attached to the cooling unit from falling off with a simple structure.

The vehicle power conversion device according to the embodiment is provided on the housing of the vehicle power conversion device and the housing surface of the vehicle power conversion device positioned in the rail direction when installed in the vehicle. A support part that supports a movable door attached to an electrical component that is disposed oppositely, a semiconductor element that is built in a housing of the vehicle power converter, and for radiating heat generated in the semiconductor element, The semiconductor element has a flange attached to one surface and a cooling fin attached to a surface opposite to the one surface of the flange, and faces the rail of the housing of the vehicle power converter. A cooling unit attached to the vehicle power converter, and the cooling unit is provided on a housing side of the vehicle power conversion device to prevent the cooling unit from falling from the vehicle power conversion device housing. Possible It is composed of a fall preventing member having a hook portion. And the fixing | fixed part of the said fall prevention member is inserted in the opening part formed in the said flange, and the said hook part protrudes from the said fixing | fixed part, The said cooling part is from the housing of the said power converter device for vehicles. It is characterized by being prevented from falling.

1 is an overall configuration diagram of a vehicle power converter according to a first embodiment. The A arrow directional view of the flange of the power converter device for vehicles of a 1st embodiment. The enlarged view of the 1st latch part of the power converter device for vehicles of a 1st embodiment. The A arrow directional view of the housing | casing recessed part of the power converter device for vehicles of 1st Embodiment. The attachment figure of the flange and 1st latch part of the power converter device for vehicles of a 1st embodiment. The figure after the flange attachment of the power converter device for vehicles of 1st Embodiment. The figure before attachment of the 2nd latch part of the power converter device for vehicles of a 2nd embodiment. The figure after attachment of the 2nd latch part of the power converter device for vehicles of a 2nd embodiment. The figure before attachment of the 3rd latch part of the power converter for vehicles of a 3rd embodiment. The figure after attachment of the 3rd latch part of the power converter device for vehicles of a 3rd embodiment. The whole block diagram of the 4th latch part of the power converter device for vehicles of a 4th embodiment. The figure before the 1st attachment of the 4th latch part of the power converter for vehicles of a 4th embodiment. The figure before the 2nd attachment of the 4th latch part of the power converter for vehicles of a 4th embodiment. The figure after attachment of the 4th latch part of the power converter device for vehicles of a 4th embodiment. The figure before the 1st attachment of the 4th latch part of the power converter for vehicles of the modification of a 4th embodiment. The figure before the 2nd attachment of the 4th latch part of the power converter for vehicles of the modification of a 4th embodiment. The figure after attachment of the 4th latch part of the power converter device for vehicles of the modification of a 4th embodiment. The jig | tool perspective view which cancels | releases the 2nd latch of the power converter device for vehicles of 2nd Embodiment. The jig | tool enlarged view which cancels | releases the 2nd latch of the power converter device for vehicles of 2nd Embodiment. (A) 1st figure which shows the periphery structure of the power converter device for vehicles of 6th Embodiment. (B) The 2nd figure which shows the periphery structure of the power converter device for vehicles of 6th Embodiment. (A) 1st figure which shows the periphery structure of the power converter device for vehicles of 7th Embodiment. (B) The 2nd figure which shows the periphery structure of the power converter device for vehicles of 7th Embodiment. The figure which shows the periphery structure of the power converter device for vehicles of 8th Embodiment. The figure which shows the periphery structure of the power converter device for vehicles of 9th Embodiment. (A) The 1st cooling wind rectification board C arrow line view of the periphery structure of the power converter device for vehicles of 9th Embodiment. (B) The 1st cooling wind rectification board D arrow line view of the periphery structure of the power converter device for vehicles of 9th Embodiment. (C) C arrow figure of the 2nd cooling wind rectifier of the peripheral structure of the power converter device for vehicles of a 9th embodiment. (D) The 2nd cooling wind rectification board D arrow line view of the periphery structure of the power converter device for vehicles of 9th Embodiment. (A) C arrow figure of the 3rd cooling wind baffle plate of the periphery structure of the power converter device for vehicles of 9th Embodiment. (B) The 3rd cooling wind rectification board D arrow line view of the periphery structure of the power converter device for vehicles of 9th Embodiment. (C) 4th cooling wind baffle plate C arrow line view of the periphery structure of the power converter device for vehicles of 9th Embodiment. (D) The 4th cooling wind rectification board D arrow line view of the periphery structure of the power converter device for vehicles of 9th Embodiment.

Hereinafter, the power converter of an embodiment is explained with reference to drawings.

(First embodiment)
The first embodiment will be described in detail with reference to the drawings. FIG. 1 is an overall configuration diagram of a vehicle power converter according to a first embodiment. FIG. 2 is a view of the flange of the vehicular power converter according to the first embodiment, as viewed from the direction indicated by the arrow A. FIG. 3 is an enlarged view of the first latch portion of the vehicle power converter according to the first embodiment. FIG. 4 is an A arrow view of a housing recess of the vehicular power conversion device according to the first embodiment. FIG. 5 is an attachment diagram of the flange and the first latch portion of the vehicle power converter according to the first embodiment. FIG. 6 is a diagram after the flange is attached to the vehicle power converter according to the first embodiment. The first embodiment will be described with reference to FIGS.

(Constitution)
FIG. 1 shows a vehicle body 100, a power conversion device 50, a housing 51, a mounting portion 52, a flange 53, a cooling fin 54, and a first latch 55. The vehicle body 100 travels as the wheels rotate on a rail (not shown). A power conversion device 50 is installed on the exterior side of the vehicle body under floor 100a, which is the rail side surface of the vehicle body 100.

The power conversion device 50 is configured with a rectangular casing 51 as an outer box, and a concave portion is provided at the rail-side central portion of the casing 51. A mounting portion 52 on which a semiconductor element and other electrical products are mounted is provided on the inner surface side of the housing 51 of the housing recess bottom surface 51a which is the bottom surface of the recess. In addition, cooling fins 54 are attached to positions on the outer surface side of the housing recess bottom surface 51 a and facing the mounting portion 52. The cooling fin 54 is fixed and attached to the inner peripheral portion of the flange 53 serving as a fixed frame, and the flange 53 to which the cooling fin 54 is attached is fixed to the housing 51 with a bolt or the like .

As shown in FIG. 2, the flange 53 has four notches (flange notches 53a and 53b).
53c, 53d). Flange notches 53a and 53b are provided on one end side. Flange 53 facing the end provided with the flange notches 53a and 53b
Are provided with flange notches 53c and 53d. In FIG. 2 , the flange notch 5
3a and the flange notch 53d are positioned so as to face each other, and the flange notch 53b and the flange notch 53c are located so as to face each other. However, this does not apply to the position and number of each flange notch.

Next, as shown in FIG. 3, a plate having an L-shaped cross section, the first latch 55 (falling prevention component) is a side surface of the housing recess 51 b that is a side surface other than the housing recess bottom surface 51 a of the housing 51. Is provided. As shown in FIG. 4, four first latches 55 are provided on the case recess side surface 51 b which is the recess side surface of the case 51. At that time, the first latch 55a and the first latch 55b are provided on one housing recess side surface 51b, and the first latch 55c and the first latch 55d are provided with the first latch 55a and the first latch 55b described above. It is provided on the housing recess side surface 55b at a position facing the body recess side surface 51b.

(Function)
Next, the attachment method which attaches the flange 53 to the power converter device 50 is demonstrated using the structure of the power converter device of this embodiment. As shown in FIG. 5, the first latch 55a and the flange notch 53a, the first latch 55b and the flange notch 53b, the first latch 55c and the flange notch 53c, the first latch 55d and the flange notch 53d. The flanges 53 are arranged so that After aligning the positions of the first latches 55a, 55b, 55c, and 55d and the flange cutouts 53a, 53b, 53c, and 53d, the flange 53 is pushed up toward the housing recess bottom surface 51a. When the flange 53 is pushed upward toward the housing recess bottom surface 51 a, the entire flange 53 is positioned closer to the housing recess bottom surface 51 a than the first latch 53. That is, the state is as shown in FIG. When the entire flange 53 is positioned closer to the housing recess bottom surface 51a than the first latch 53, the first latches 55a, 55b, 55c, and 55d and the flange notches 53a, 53b, 53c, and 53d, as shown in FIG. The flange 53 is moved so that the positions become different. By moving the flange 53, each younger brother 1 latch 55 overlaps with the flange 53 not having the flange notches 53a, 53b, 53c, 53d.

(effect)
In the power conversion device of the present embodiment having the above-described configuration, when a fixing device such as a bolt connecting the flange 53 and the casing 51 is damaged, the outer periphery of the flange 53 contacts the upper portion of the first latch 55. Will do. Therefore, even when the flange 53 falls, the flange 53 and the cooling fin 54 remain in the housing 51. Since the flange 53 and the cooling fin 54 do not fall out of the casing 51, the vehicle traveling is not significantly affected.

  According to the power conversion device of the embodiment described above, it is possible to prevent the power conversion device from falling off with a simple structure by providing the fall prevention component that stays in the housing when the cooling unit falls. . The sleeper direction shown in FIG. 1 may be the rail direction.

  In addition to the above-described components, structural parts such as a unit composed of a cooling unit and electrical parts, a cover, and the like can be considered in addition to the cooling unit. The configuration of is applicable.

(Second Embodiment)
The second embodiment will be described in detail with reference to the drawings. FIG. 7 is a view before the second latch portion of the vehicle power converter according to the second embodiment is attached. FIG. 8 is a diagram after the second latch portion of the vehicle power converter according to the second embodiment is attached.

This embodiment is different from the first embodiment in the structure of a latch portion that is a fall prevention component. Hereinafter, this point will be described in detail.

(Constitution)
As shown in FIGS. 7 and 8, the second latch (drop prevention component) 60 of the present embodiment has a second latch fixing portion 61, a second latch fastening portion 62, and a second latch movable portion 63. In the second latch fixing portion 61, one side surface of the second latch fixing portion 61 is fixed to the housing recess side surface 51b by welding or the like. The second latch fixing portion 61 and the second latch movable portion 63 are supported by the second latch fastening portion 62 so as to be movable. At this time, the second latch fastening portion 62 is, for example, a rod-shaped member penetrating the second latch fixing portion 61 and the second latch movable portion 63 and protrudes from the second latch fixing portion 61 and the second latch movable portion 63. The second latch fixing portion 61 and the second latch movable portion 63 are connected by fixing the existing portion with a bolt or the like. Further, for example, the second latch movable part 63 and the second latch fixing part 61 are constituted by springs.

(Function)
As shown in FIG. 7, in the power conversion device of the present embodiment as described above, when the flange 53 is pushed up from the outside of the housing 51 toward the housing recess bottom surface 51 a, the outer periphery of the flange 53 is connected to the second latch movable portion 63. Contact. When the outer periphery of the flange 53 and the second latch movable portion 63 are in contact with each other, when the flange 53 is further pushed up in the direction of the housing recess bottom surface 51a, the second latch movable portion 63 is similar to the second latch fixing portion 61. One wide side surface of the two-latch movable portion 63 is positioned along the housing recess side surface 51b. In other words, the longitudinal direction of the entire second latch 60 is substantially parallel to the housing recess side surface 51b.

  Thereafter, as shown in FIG. 8, the flange 53 comes into contact with and attaches to the bottom surface 51a of the housing recess. At that time, the flange 53 is located closer to the housing recess bottom surface 51 a than the second latch movable portion 63. Therefore, the second latch movable portion 63 is a movable region and has an inclination with respect to the housing recess side surface 51b.

(effect)
In the power conversion device according to the present embodiment having the above-described configuration, when a fixing device such as a bottle connecting the flange 53 and the casing 51 is damaged, the outer peripheral portion of the flange 53 is disposed above the second latch movable portion 63. Will come into contact. Therefore, even when the flange 53 falls, the flange 53 and the cooling fin 54 remain in the housing 51. Since the flange 53 and the cooling fin 54 do not fall out of the casing 51, the vehicle traveling is not significantly affected.

  According to the power conversion device of at least one embodiment described above, it is possible to prevent the power conversion device from falling off with a simple structure by providing the fall prevention component that stays in the housing when the cooling unit falls. It becomes possible.

(Third embodiment)
The third embodiment will be described in detail with reference to the drawings. FIG. 9 is a view of the third latch portion of the vehicle power conversion device according to the third embodiment before attachment. FIG. 10 is a view after the third latch portion of the vehicle power converter according to the third embodiment is attached. In addition, about the thing which has the same structure as FIG. 1 thru | or 8, the same code | symbol is attached | subjected and description is abbreviate | omitted.

This embodiment differs from the first embodiment in a latch structure that is a fall prevention component. Hereinafter, this point will be described in detail.

(Constitution)
As shown in FIGS. 9 and 10, the third latch 70 of the present embodiment includes a third latch auxiliary portion 71, a third latch retaining portion 72, and a third latch movable portion 73. In the rectangular third latch auxiliary portion 71, one side surface of the third latch auxiliary portion 71 is fixed to the housing recess side surface 51b by welding or the like. The substantially L-shaped third latch movable part 73 is connected by a third latch fastening part 72 so that one end of the third latch movable part 73 is movable with the flange 53. At this time, for example, the third latching portion 72 is configured by a bolt or the like. The third latch movable part 73 has an opening, and when there is a recess on the flange 53 side, a threaded rod is inserted from the opening side of the third latch movable part 73 toward the recess of the flange 53. To do. The screw-like rod end protruding to the third latch movable portion 73 side is fixed by a nut. Therefore, the flange 53 and the third latch movable portion 73 are connected via a bolt. For example, the 3rd latch movable part 73 is comprised with the spring.

(Function)
As shown in FIG. 9, the power conversion device of the present embodiment as described above has the third latch movable portion 73 connected to the cooling fin of the flange 53 when the flange 53 is pushed up from the outside of the housing 51 toward the housing recess bottom surface 51 a. Store on the side. When the flange 53 is further pushed up in the direction of the housing recess bottom surface 51a while the third latch movable portion 73 is housed inside the flange 53, the flange 53 comes into contact with the housing recess bottom surface 51a as shown in FIG. It is attached. At that time, the end portion of the third latch movable portion 73 on the non-fixed side protrudes from the flange 53 toward the housing recess side surface 51b. A third latch auxiliary portion 71 is provided on the rail side (lower side) of the protruding end portion of the third latch movable portion 73.

(effect)
In the power conversion device according to the present embodiment having the above-described configuration, when a fixing device such as a bolt connecting the flange 53 and the casing 51 is damaged, one end of the third latch movable unit 73 and the third latch The auxiliary part 71 comes into contact. Therefore, even when the flange 53 falls, the flange 53 and the cooling fin 54 remain in the housing 51. Flange 53
Since the cooling fin 54 does not fall out of the casing 51, the vehicle traveling is not significantly affected.

  According to the power conversion device of at least one embodiment described above, it is possible to prevent the power conversion device from falling off with a simple structure by providing the fall prevention component that stays in the housing when the cooling unit falls. It becomes possible.

(Fourth embodiment)
The fourth embodiment will be described in detail with reference to the drawings. FIG. 11 is an overall configuration diagram of a fourth latch unit of the vehicle power converter according to the fourth embodiment. FIG. 12 is a first pre-attachment view of the fourth latch portion of the vehicle power converter according to the fourth embodiment. FIG. 13: is a figure before the 2nd attachment of the 4th latch part of the power converter device for vehicles of 4th Embodiment. FIG. 14 is a diagram after the fourth latch portion of the vehicle power converter according to the fourth embodiment is attached. In addition, about the thing which has the same structure as FIG. 1 thru | or 10, the same code | symbol is attached | subjected and description is abbreviate | omitted.

This embodiment differs from the first embodiment in a latch structure that is a fall prevention component. Hereinafter, this point will be described in detail.

(Constitution)
As shown in FIGS. 11, 12, 13, and 14, the fourth latch 80 of the present embodiment includes a cylindrical fourth latch fixing portion 81 and a plate-like fourth latch hooking portion 82. ing. The fourth latch fixing portion 81 is attached to the housing recess bottom surface 51 a side of the flange 53. The fourth latch hooking part 82 is attached to the one end part side in the fourth latch fixing part 81 so as to be housed. At this time, in the case where no force is applied to the fourth latch hooking portion 82, the fourth latch hooking portion 82 is partially protruded to the outside of the fourth latch fixing portion 81.

(Function)
As shown in FIG. 13, the power conversion device of the present embodiment as described above has the fourth latch fixing portion as shown in FIG. 13 when the flange 53 is pushed up from the outside of the housing 51 toward the housing recess bottom surface 51 a. It arrange | positions so that 81 may become the same position as the housing | casing opening part 51c opened to the housing | casing recessed part bottom face 51a. When the fourth latch fixing portion 81 passes through the housing opening 51c, the fourth latch hooking portion 82 comes into contact with the side surface of the housing opening 51c so that part or all of the fourth latch fixing portion 81 is in the fourth latch fixing portion 81. Is stored. When the flange 53 is further pushed up in the direction of the housing recess bottom surface 51a, the flange 53 comes into contact with and attaches to the housing recess bottom surface 51a as shown in FIG. At that time, the end of the fourth latch fixing portion 81 that is not fixed to the flange 53 protrudes into the housing 51 from the housing recess bottom surface 51a. The fourth latch hooking portion 82 provided at the end protrudes outside the fourth latch fixing portion 81 because there is no external pressure.

(effect)
When the fixing device such as a bolt connecting the flange 53 and the casing 51 is damaged, the power conversion device of the present embodiment having the above-described configuration is configured such that a part of the fourth latch hook 82 and the casing A part of the concave bottom surface 51a comes into contact. Therefore, even when the flange 53 falls, the flange 53 and the cooling fin 54 remain in the housing 51. Since the flange 53 and the cooling fin 54 do not fall out of the casing 51, the vehicle traveling is not significantly affected.

  According to the power conversion device of at least one embodiment described above, it is possible to prevent the power conversion device from falling off with a simple structure by providing the fall prevention component that stays in the housing when the cooling unit falls. It becomes possible.

(Modification)
Next, a case where the mounting position of the fifth latch having the same structure as the above-described fourth latch is different will be described. FIG. 15 is a first pre-attachment view of the fifth latch portion of the vehicle power converter according to the modification of the fourth embodiment. FIG. 16 is a diagram of the fifth latch portion of the vehicle power converter according to the modified example of the fourth embodiment, prior to the second attachment. FIG. 17 is a view after the fifth latch portion of the vehicle power converter according to the modification of the fourth embodiment is attached. In addition, about the thing which has the same structure as FIG. 1 thru | or 14, the same code | symbol is attached | subjected and description is abbreviate | omitted.

This embodiment is different from the fourth embodiment in the mounting location of the latch which is a fall prevention component. Hereinafter, this point will be described in detail.

(Constitution)
As shown in FIG. 15, the fifth latch 90 is provided on the outer surface of the housing recess bottom surface 51a. Further, the flange 53 is provided with a flange opening 53e in accordance with the attachment position of the fifth latch 90. A description of the fifth latch having the same configuration as the fourth latch 80 described above is omitted.

(Function)
In the power conversion device of the present embodiment as described above, when the flange 53 is pushed up from the outside of the housing 51 toward the housing recess bottom surface 51a as shown in FIG. 15, the fifth latch fixing portion 91 is connected to the flange opening 53e. Arrange them to be in the same position. As shown in FIG. 16, when the fifth latch fixing portion 91 passes through the flange opening 53e, the fifth latch hooking portion 92 comes into contact with the side surface of the flange opening 53e, thereby A part or all of them are stored. When the flange 53 is further pushed up in the direction of the housing recess bottom surface 51a, the flange 53 comes into contact with and attached to the housing recess bottom surface 51a as shown in FIG. At that time, the end of the fifth latch fixing portion 81 that is not fixed to the housing recess bottom surface 51 a protrudes from the flange 53 toward the cooling fin 54. The fifth latch hooking portion 92 provided at the end protrudes outward from the fifth latch fixing portion 91 because there is no external pressure.

(effect)
The above configuration not only has the same configuration as that of the above-described fourth embodiment, but also when the flange 53 is removed from the housing 51, for example, by using a cylindrical latch release device, The latch hook portion 92 can be easily accommodated in the fifth latch fixing portion 91. Therefore, in addition to safety, the detachability of the apparatus is improved.

(Fifth embodiment)
The fifth embodiment will be described in detail with reference to the drawings. FIG. 18 is a perspective view of a latch release instrument for releasing the second latch of the vehicle power converter according to the second embodiment. FIG. 19 is an enlarged view of a latch release instrument for releasing the second latch of the vehicle power converter according to the second embodiment. In addition, about the thing which has the same structure as FIG. 1 thru | or 17, the same code | symbol is attached | subjected and description is abbreviate | omitted.

This embodiment is a tool for releasing the latch function (fall prevention function) of the second embodiment. Hereinafter, this point will be described in detail.

(Constitution)
The latch release device 110 shown in FIG. 18 includes a receiving plate 111, a latch release bar 112, an adjustment unit 113, and a pedestal 114. On the plate-like pedestal 114, an adjustment unit 113 capable of adjusting the vertical height is attached. A plate-shaped receiving plate 111 is attached to the other end of the adjustment unit 113 that is not connected to the base 114. The receiving plate 111 and the pedestal 114 are positioned so that their wide surfaces face each other. A U-shaped latch release rod 112 is attached to the surface of the receiving plate 111 that is not connected to the adjusting portion 113. At this time, both ends of the latch release rod 112 are connected to the receiving plate 111.

(Function)
As shown in FIG. 19, the latch release device having such a configuration, for example, when the flange 53 shown in the second latch FIG. 8 is attached to the housing 51, the latch release device 110 is attached to the housing 51. It arrange | positions according to the recessed part of the body 51. FIG. Thereafter, the receiving plate 112 of the latch release device 110 is pushed up by the adjustment unit 113 in the direction of the housing recess bottom surface 51a. When the receiving plate 112 is pushed up, the latch release rod 112 attached to the receiving plate 112 is also pushed up to the housing recess bottom surface 51a side. At that time, a part of the latch release rod 112 comes into contact with the rail-side surface of the second latch movable portion 63.

When the latch release rod 110 is further pushed up in the direction of the housing recess bottom surface 51a in a state where a part of the latch release rod 110 and the second latch movable portion 63 are in contact with each other, the second latch movable portion 63 is connected to the second latch fixing portion 61. Similarly, one wide side surface of the second latch movable portion 63 is positioned along the housing recess side surface 51b. In other words, the longitudinal direction of the entire second latch 60 is substantially parallel to the housing recess side surface 51b.

(effect)
The latch release device having the above-described configuration can easily release the fall prevention function of the latch of at least one embodiment.

(Sixth embodiment)
Next, the peripheral structure of the vehicle power converter that can be combined with the first to fourth embodiments will be described with reference to FIG. FIG. 20A is a first diagram showing a peripheral structure of the vehicle power converter according to the sixth embodiment. FIG. 20B is a second diagram illustrating a peripheral structure of the vehicle power converter according to the sixth embodiment. In addition, about the thing which has the same structure as FIG. 1 thru | or 19, the same code | symbol is attached | subjected and description is abbreviate | omitted.

(Constitution)
In FIG. 20, the vehicle body under floor 100a of the vehicle body 100, the power conversion device 50, and the casings 51 and 51a are shown.
The bottom surface of the housing recess, the bottom surface of the housing 51c, the mounting portion 52, the flange 53, the cooling fin 54, the inspection portion 120, the first inspection portion latch 121, the hinge 122, the first inspection door 123, and the electrical component 150 are shown. .

On the both sides of the casing 51 of the power conversion device 50 along the traveling direction, the electrical product 1
50 is installed. An inspection portion 120 having an opening for inspecting the mounting portion 52 installed in the housing 51 is provided on the surface of the housing 51 that faces the electrical product 150. A cover that covers the opening may be provided at the opening of the inspection unit 120 . In addition, at the lower part of the inspection unit 120 (on the side of the housing bottom 51c located on the rail side (not shown) from the vehicle body under floor 100a), a first inspection unit latch 121 having a long plate having an L-shaped cross section is provided. 51 is attached to the side surface. At this time, the L-shaped one end side surface of the first inspection portion latch 121 is joined to the side surface of the housing 51, and the other end portion extends from the housing 51 in the direction of the electric product 150. A hinge 122 is provided at a position substantially opposite to the first inspection unit latch 121 on the surface of the electrical product 150 facing the housing 51. The hinge 122 is connected to and supported by one end of the first inspection door so that the first inspection door 123 can move. At this time, the first inspection door 12
3 can be brought into contact with the side surface (the L-shaped extending portion upper surface) of the L-shaped extending portion of the first inspection portion latch 121 that faces the vehicle floor bottom 100a.

(Function)
The operation of the peripheral structure of the vehicle power conversion device of this embodiment will be described.

As shown in FIG. 20A, the first inspection door 123 comes into contact with the upper surface of the L-shaped extension portion of the first inspection portion latch 121. At this time, the internal space 124 surrounded by the electrical product 150, the power conversion device 50, and the first inspection door 123 is held. That is, the internal space 124 is partitioned from the outside by the first inspection door 123.

  Next, a case where the first inspection door 123 is moved upward will be described with reference to FIG. As shown in the figure, the first inspection door 123 is provided such that an end portion not connected to the hinge 122 is movable at least 90 degrees by connecting the hinge 122 and one end portion. The end of the first inspection door 123 in FIG. 20 (A) is moved to the electrical product 150 side by about 90 degrees to form the first inspection door in FIG. 20 (B). The first inspection door 123 after the 90-degree movement can be fixed by a fixing tool provided in the electric product 150. It is also possible to fix the hinge 123 with a fixture that locks the rotation of the hinge 123. At this time, the electrical product 150 and the power conversion device 50 have an opening.

(effect)
In the embodiment having the above configuration, the first inspection door can be easily opened and closed by the hinge and the first inspection portion latch. That is, since the inside of the housing can be easily accessed through the first inspection section from the opening after the inspection door is moved, maintenance work from the inspection section can be simplified. Further, when the vehicle is traveling normally, the first check door can prevent dust from flowing into the housing from the outside.

From the above, in addition to the effects of the first to fifth embodiments, the vehicle power conversion device of the present embodiment improves maintenance while reducing the inflow of dust and the like from the outside to the inside of the power conversion device. Is possible.

(Seventh embodiment)
Next, the peripheral structure of the vehicle power converter that can be combined with the first to fourth embodiments will be described with reference to FIG. FIG. 21A is a first diagram illustrating a peripheral structure of the vehicle power converter according to the seventh embodiment. FIG. 21B is a second diagram illustrating the peripheral structure of the vehicle power converter according to the seventh embodiment. In addition, about the thing which has the same structure as FIG. 1 thru | or 20, the same code | symbol is attached | subjected and description is abbreviate | omitted.

(Constitution)
The configuration of this embodiment is different from the configuration of the sixth embodiment in the contact structure of the inspection door and the inspection portion latch. This will be described below.

  One end of the second inspection door 133 is connected to a hinge 132 attached to the electric product 150, and the other end extends to the housing 51 side. The extending-side end portion of the second inspection door 133 is located on the lower side (the housing bottom surface 51 c side) of the L-shaped extending portion of the second inspection portion latch attached to the side surface of the housing 51. At this time, the extending side end portion of the second inspection door 133 and the L-shaped extension portion of the second inspection portion latch have side portions that overlap each other. In the overlapping surface portion, the extending side end portion of the second inspection door 133 and the L-shaped extending portion of the second inspection portion latch 131 have a through hole 135 through which both penetrate. An attachment 134 such as a screw or a bolt can be inserted into the through hole 135. The second inspection door 133 is fixed to the second inspection portion latch 131 by the fixture 134.

(Function)
The operation of the peripheral structure of the vehicle power conversion device of this embodiment having such a configuration will be described.

  As shown in FIG. 21A, the second inspection door 133 is fixed by a fixture 134 so as to contact the lower surface of the L-shaped extension portion of the second inspection portion latch 131. At this time, the internal space 134 surrounded by the electric product 150, the power conversion device 50, and the second inspection door 133 is held. That is, the internal space 134 is partitioned from the outside by the second inspection door 133.

  Next, a case where the second inspection door 133 is moved downward will be described with reference to FIG. As shown in the drawing, when one end portion of the second inspection door 133 is connected to the hinge 132, the end portion not connected to the hinge 132 is provided so as to be movable at least 90 degrees. The end of the second inspection door 133 in FIG. 21 (A) is moved about 90 degrees from the downward direction (case bottom side) to the electrical product 150 side to become the second inspection door 133 in FIG. 21 (B). . The second inspection door 133 after the 90-degree movement can be fixed by a fixing tool provided on the electric product 150. It is also possible to fix the hinge 133 with a fixture that locks the rotation of the hinge 133. At this time, the electrical product 150 and the power conversion device 50 have an opening.

(effect)
In the embodiment having the above-described configuration, the second inspection door can be easily opened / closed / fixed by the hinge, the second inspection portion latch, and the fixture. Therefore, since the inside of the housing can be easily accessed from the opening after moving the second inspection door through the inspection unit, the maintenance work from the inspection unit can be simplified. Further, when the vehicle is traveling normally, the second inspection door can prevent dust from flowing into the housing from the outside. Furthermore, since the second inspection door opens and closes downward, it can be easily recognized that the second inspection door is being inspected, and since it can also be recognized, there is also an effect of preventing the second inspection door from being forgotten to close. .

From the above, in addition to the effects of the first to fifth embodiments, the vehicle power conversion device of the present embodiment improves maintenance while reducing the inflow of dust and the like from the outside to the inside of the power conversion device. Is possible.

(Eighth embodiment)
Next, the peripheral structure of the vehicle power converter that can be combined with the first to fourth embodiments will be described with reference to FIG. FIG. 22 is a diagram illustrating a peripheral structure of the vehicle power converter according to the eighth embodiment. In addition, about the thing which has the same structure as FIG. 1 thru | or 21, the same code | symbol is attached | subjected and description is abbreviate | omitted.

(Constitution)
In the configuration of the present embodiment, the contact structure between the inspection door and the inspection portion latch differs depending on the size of the electrical product and the housing of the sixth embodiment. This will be described below.

  One end portion of the third inspection door 143 is connected to the hinge 142 attached to the electrical product 151, and the other end portion extends to the housing 51 side. The extension side end of the third inspection door 143 is located on the upper surface side (the vehicle body bottom surface 100 a side) of the L-shaped extension portion of the third inspection portion latch 141 attached to the side surface of the housing 51. At this time, the third inspection portion latch 141 has a larger inner angle than the first inspection portion latch 121 and the second inspection portion latch 131. Further, the extending side end portion of the third inspection door 143 and the L-shaped extension portion of the third inspection portion latch 141 have side portions that overlap each other. At this time, the bottom surface of the electric product 151 (electric product bottom surface 152) is positioned below the casing 51 in the rail direction (not shown). Therefore, the third inspection door 143 is positioned with an inclination from the end portion on the electric product 151 side to the end portion on the housing 51 side.

(Function)
The peripheral structure of the vehicle power conversion device of this embodiment having such a configuration has the same operation as that of the sixth embodiment.

(effect)
In the embodiment having the above-described configuration, the third inspection door can be easily opened and closed by the hinge and the third inspection portion latch. Therefore, since the inside of the housing can be easily accessed through the inspection part from the opening part after the third inspection door is moved, the maintenance work from the inspection part can be simplified. In addition, when the vehicle is traveling normally, the third check door can prevent dust from flowing into the housing from the outside.

From the above, in addition to the effects of the first to fifth embodiments, the vehicle power conversion device of the present embodiment improves maintenance while reducing the inflow of dust and the like from the outside to the inside of the power conversion device. Is possible.

The configuration of the present embodiment may be combined with the configuration of the seventh embodiment, and the third inspection door may be fixed with a fixture such as a bolt or a screw from the lower side of the L-shaped extension of the third inspection portion latch. Is possible. Even in this case, it is possible to obtain the same operation as that of the seventh embodiment and the present embodiment.

(Ninth embodiment)
Next, the peripheral structure of the vehicle power converter that can be combined with the first to fourth embodiments will be described with reference to FIGS. 23, 24, and 25. FIG. 23 is a diagram illustrating a peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 24A is a first cooling air rectifying plate C view of the peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 24B is a first cooling air rectifying plate D view of the peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 24C is a C arrow view of the second cooling air rectifying plate of the peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 24D is a second cooling air rectifying plate D view of the peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 25A is a C arrow view of the third cooling air rectifying plate in the peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 25 (B) is a third cooling air rectifying plate D view of the peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 25C is a fourth cooling air rectifying plate C view of the peripheral structure of the vehicle power converter according to the ninth embodiment. FIG. 25 (D) is a fourth cooling air flow straightening plate D view of the peripheral structure of the vehicle power converter according to the ninth embodiment.

In addition, about the thing which has the same structure as FIG. 1 thru | or 22, the same code | symbol is attached | subjected and description is abbreviate | omitted.

(Constitution)
This embodiment is different from the sixth embodiment in that a first cooling air rectifying plate is attached to the first inspection door 123. This will be described below.

  As shown in FIG. 23, the first cooling air rectifying plate 125 is provided on the lower surface of the first inspection door 123 (the surface opposite to the surface facing the vehicle body underfloor 100a).

  24A shows the first cooling air rectifying plate 125 from the direction C in FIG. 23, and FIG. 24B shows the first cooling air rectifying plate 125 from the direction D in FIG. As shown in FIG. 24, the first cooling air rectifying plate 125 is installed such that a plurality of long plates are equally spaced and wide surfaces face each other.

  Next, a modified example of the cooling air rectifying plate will be described with reference to FIGS. 24 (C) (D) and 25 (A) (B) (C) (D).

  FIG. 24C shows the second cooling air rectifying plate from the direction C of FIG. 23, and FIG. 24D shows the second cooling air rectifying plate from the direction D of FIG. The second cooling air rectifying plate 126 has a shape in which the cross section has a grid shape. In detail, it becomes the structure which adds a long plate so that it may orthogonally cross and pass through the several long plate of the 1st cooling wind baffle plate 125.

  FIG. 25A shows the third cooling air rectifying plate from the direction C of FIG. 23, and FIG. 25B shows the third cooling air rectifying plate from the direction D of FIG. The third cooling air rectifying plate 127 is a long plate having a corrugated cross section. At this time, the top portion of the unidirectional wave is joined to the first inspection door 123, so that the third cooling air rectifying plate 127 is fixed to the first inspection door 123. Further, a structure in which the corrugated long plate is integrated with the first inspection door is also possible. At that time, like the third cooling air rectifying plate, one end is connected to the hinge, and the other end is in contact with the inspection unit latch.

  FIG. 25C shows the fourth cooling air rectifying plate from the direction C of FIG. 23, and FIG. 25D shows the fourth cooling air rectifying plate from the direction D of FIG. The fourth cooling air rectifying plate 128 has a configuration in which two third cooling air rectifying plates 127 overlap each other. Specifically, the fourth cooling air rectifying plate 128 includes a fourth cooling air rectifying plate 128a and a fourth cooling air rectifying plate 128b that are long plates having a corrugated cross section. As for the 4th cooling air baffle plate 128a, the vertex of the wave of one direction has joined with the 1st inspection door 123. FIG. Further, the fourth cooling air rectifying plate 128 b is joined to the wave apex on the side opposite to the wave apex where the fourth cooling air rectifying plate 128 a is joined to the first inspection door 123. At this time, the top of the wave of the fourth cooling air rectifying plate 128a is located away from the top of the wave of the fourth cooling air rectifying plate 128b. Therefore, the fourth cooling air rectifying plate 128 has a plurality of cavities surrounded by the fourth cooling air rectifying plate 128a and the fourth cooling air rectifying plate 128b.

(Function)
The operation of this embodiment will be described below.

  First, the operation of the first cooling air rectifying plate 125 in FIGS. 23 and 24A and 24B will be described. When the vehicle travels, outside air flows through the bottom surfaces of the electrical component 150 and the casing 51. For example, when the outside air flows from the left to the right in FIG. 23, the outside air flowing along the bottom surface of the electric product 150 is rectified when passing between the long plates of the first cooling air rectifying plate 125, It will flow toward the cooling fin 54.

  Next, the operation of the second cooling air rectifying plate 126 in FIGS. 24C and 24D will be described. When the vehicle travels, outside air flows through the bottom surfaces of the electrical component 150 and the casing 51. The outside air flowing along the bottom surface of the electric product 150 is rectified when passing through the grid formed by the second cooling air rectifying plate 126 and the first inspection door 123, and flows toward the cooling fins.

  Next, the operation of the third cooling air rectifying plate 127 shown in FIGS. 25A and 25B will be described. When the vehicle travels, outside air flows through the bottom surfaces of the electrical component 150 and the casing 51. The outside air flowing along the bottom surface of the electric product 150 is rectified when passing between the third cooling air rectifying plate 127 and the first inspection door 123 and between the third cooling air rectifying plates 123 and to the cooling fin 54. It will flow towards.

  Next, the operation of the fourth cooling air rectifying plate 128 in FIGS. 25C and 25D will be described. When the vehicle travels, outside air flows through the bottom surfaces of the electrical component 150 and the casing 51. The outside air flowing along the bottom surface of the electric product 150 flows between the fourth cooling air rectifying plate 128a and the first inspection door 123, between the fourth cooling air rectifying plate 128a and the fourth cooling air rectifying plate 128b, and the fourth cooling air. When passing between the current plates 128b, the current is rectified and flows toward the cooling fins 54.

(effect)
The vehicular power conversion device of the present embodiment configured as described above is configured such that the cooling air rectifying plate is attached to the first inspection door, so that the outside air including many turbulent flows flowing under the floor of the vehicle is cooled with the cooling air. Since the air is rectified by the current plate and outside air without turbulence flows through the cooling fins,
More outside air passes through the cooling fins as cooling air.

  At this time, since the second to fourth cooling air rectifying plates have a large number of wind tunnels, the rectifying effect is high, and the effect of increasing the amount of cooling air flowing into the cooling fins can be considered.

  Note that the configuration of the present embodiment can be combined with the sixth to eighth embodiments. When combined with each embodiment, the effects of both the embodiment and the present embodiment can be obtained.

  The inspection door described in the sixth to ninth embodiments can be connected to either an electrical product or a housing.

  In addition, when there is a distance between the casing and the electrical component described in the sixth to ninth embodiments, the beam is attached to the vehicle body between the casing and the electrical component, so that the above-described implementation is performed between the beam and the casing. It is also possible to take a form configuration.

All the embodiments described above are presented by way of example and do not limit the scope of the invention. Therefore, the present invention 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 modifications thereof are included in the scope of the invention described in the claims and equivalents thereof.

50 Power Converter 51 Case 51a Case Recess Bottom Surface 51b Case Recess Side Surface 51c Case Opening 52 Mounting Portion 53 Flange 53a Flange Notch 53b Flange Notch 53c Flange Notch 53d Flange Notch 53e Flange Notch 53e Part 54 cooling fin 55 first latch 55a first latch 55b first latch 55c first latch 55d first latch 60 second latch 61 second latch fixing part 62 second latch fastening part 70 third latch 71 third latch auxiliary 72 Third latch fastening portion 73 Third latch movable portion 80 Fourth latch 81 Fourth latch fixing portion 82 Fourth latch hooking portion 90 Fifth latch 91 Fifth latch fixing portion 91 Fifth latch hooking portion 100 Vehicle body 100a Vehicle body under floor 110 Latch release tool 111 Receiving plate 112 Latch release rod 113 Adjustment unit 114 Pedestal 120 Inspection unit 121 First inspection unit latch 122 Hinge 123 First inspection door 125 First cooling air rectifying plate 126 Second cooling air rectifying plate 127 Third cooling air rectifying plate 128 Fourth cooling air rectifying plate 128a Fourth cooling air rectifying plate Plate 128b Fourth cooling wind retaining plate 130 Inspection section 131 Second inspection latch 132 Hinge 133 Second inspection door 134 Attachment 135 Through hole 140 Inspection section 141 Third inspection section latch 142 Hinge 143 Third inspection door 150 Electricity 151 Electrical goods

Claims (2)

In a vehicular power conversion device that generates electric power for a vehicle to travel,
A housing of the vehicle power conversion device;
A support portion that is provided on a housing surface of the vehicular power conversion device that is positioned in the rail direction when installed in the vehicle, and supports a movable door attached to an electrical component disposed to face the housing surface; ,
A semiconductor element built in a housing of the vehicle power converter,
The semiconductor element has a flange attached to one surface for dissipating heat generated in the semiconductor element, and a cooling fin attached to a surface opposite to the one surface of the flange, A cooling unit attached to a surface of the vehicle power converter facing the rail of the housing;
In order to prevent the cooling unit from falling from the housing of the vehicle power conversion device, the cooling unit is provided on the housing side of the vehicle power conversion device, and has a fixed portion and a hook portion that can project from the fixed portion. Consisting of a fall prevention member,
The fixing portion of the fall prevention member is inserted into an opening formed in the flange, and the hook portion protrudes from the fixing portion, so that the cooling portion falls from the housing of the vehicle power conversion device. It is prevented that this is prevented. The cooling unit is attached to the housing of the vehicle power converter using bolts.
The vehicular power converter according to claim 1 characterized by things.

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