JP2012171411A - Underfloor device of vehicle - Google Patents

Abstract

There is provided an underfloor device for a railway vehicle capable of reducing the number of wires, reducing the weight and improving the assemblability.
An underfloor apparatus includes a housing 24, a circuit board 36, and a first connector 28 mounted on the circuit board, a control circuit board unit 30 disposed in the housing, a circuit board, and the circuit board. An interface circuit board disposed in the housing, a wiring board 44 on which a wiring pattern is formed, and a first connector mounted on the circuit board, and mounted on the wiring board and exposed to the outside of the housing. A wiring board unit having a fitting connector 46 and a plurality of wiring connectors 48 mounted on the wiring board and disposed in the housing is provided. The first connector of the control circuit board unit and the first connector of the interface circuit board are directly connected to the wiring connector of the wiring board unit.
[Selection] Figure 5

Description

  Embodiments described herein relate generally to a vehicle underfloor device that is installed under the floor of a railway vehicle.

  Usually, a railway vehicle has a vehicle body, a pair of carriages provided under the floor of the vehicle body and supported by wheels and an electric motor, and a plurality of underfloors such as a power conversion device and a vehicle control device installed under the floor of the vehicle body. And a device. The underfloor device includes a rectangular box-shaped casing formed of a metal plate or the like, and various electrical components disposed in the casing.

  The underfloor device has an outfitting connector that is exposed outside the housing, and a large number of wires such as transmission lines and control power lines are connected to the outboard connector from the vehicle body side. Further, in the housing, each electrical product is connected to the outfitting connector via a number of wires, and the electrical products are electrically connected to each other via other wires and connectors.

JP-A-2-249756

  As described above, a large amount of wiring is arranged in the housing of the underfloor device, which occupies the space in the device. Since almost all of the control wirings from the equipment connector are connected to the control unit or the interface unit in the housing, the wiring bundle becomes large, often affecting the attachment / detachment of the control unit.

  An electric wire support for supporting a large number of wirings is required, which leads to an increase in the weight of the entire apparatus together with a large amount of wirings. Further, the wiring work at the time of manufacture is complicated, and there is a concern that the temperature rises due to the heat radiation of the wiring inside the housing.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an underfloor device for a railway vehicle capable of reducing the number of wires, reducing the weight and improving the assemblability. It is in.

  According to the embodiment, an underfloor device for a railway vehicle includes a housing, a circuit board, a first connector mounted on the circuit board, a control circuit board unit disposed in the housing, and a circuit board. A first connector mounted on the circuit board, an interface circuit board disposed in the housing, a wiring board on which a wiring pattern is formed, and an outside of the housing mounted on the wiring board A wiring board unit that is disposed in the housing and has a plurality of wiring connectors mounted on the wiring board, and a first connector and an interface circuit of the control circuit board unit The first connector of the board is directly connected to the wiring connector of the wiring board unit.

FIG. 1 is a side view schematically showing a railway vehicle including an underfloor device according to an embodiment. Drawing 2 is a sectional view showing the power converter concerning an embodiment. FIG. 3 is a plan view of the power converter. FIG. 4 is a front view of the power converter. FIG. 5 is an exploded perspective view showing a wiring board unit and a control board unit in the power converter. FIG. 6 is a cross-sectional view showing a power converter according to a modification.

  Hereinafter, an underfloor device for a railway vehicle according to an embodiment will be described in detail with reference to the drawings.

  First, a railway vehicle 12 including a power conversion device 10 will be described as an underfloor device according to the embodiment. FIG. 1 schematically shows a railway vehicle. The railway vehicle 12 includes a pair of carriages 16 each provided with wheels 14 and a vehicle body 17 supported on the carriages via an air spring 15. A main motor 18 is placed in the vicinity of the wheel 14 on each carriage 16. The main motor 18 is connected so that rotational force can be transmitted to the wheels 14 through a gear box and a coupling (not shown). The wheel 14 is placed on the rail 13.

  A pantograph 19 is provided on the ceiling side of the vehicle body 17, and this panda graph is in contact with the overhead line 21. Under the floor of the vehicle body 17, the power conversion device 10, the control device 23, and other underfloor devices are equipped. The electric power supplied from the overhead line 21 to the pantograph 19 passes through another device (not shown) and is supplied to the power conversion device 10, the control device 23, and the like. The electric power is converted from direct current to alternating current by the power converter 10 and supplied to each main motor 18 through a wiring (not shown). The main motor 18 is driven by the supplied electric power and rotates the wheels 14 through the gear box and the coupling, whereby the vehicle body 17 travels on the rail 13.

Next, the power converter device 10 according to the present embodiment will be described.
2 is a cross-sectional view showing the appearance of the power converter, FIG. 3 is a plan view of the power converter, FIG. 4 is a front view of the power converter, and FIG. 5 is an exploded perspective view of the power converter. As shown in FIGS. 2 to 5, the power conversion device 10 includes a housing 24 and a plurality of electrical components, wiring, connectors, and the like disposed in the housing.

  As shown in FIGS. 2 to 4, the casing 24 has a ceiling wall 24a, a pair of side walls 24b and 24c, a bottom wall 12d, and a pair of end walls 24e, and is formed in an elongated rectangular box shape as a whole. . A plurality of mounting brackets for mounting the power conversion device 10 under the floor of the vehicle body 17, for example, hanging ears 25, are fixed at a plurality of locations on the outer surface of the ceiling wall 24a, for example, at four corners.

  The casing 24 is attached to the under floor by a plurality of hanging ears 25 with the ceiling wall 12 a facing the under floor of the vehicle body 17. The casing 24 is arranged with its longitudinal direction extending parallel to the traveling direction A of the railway vehicle 12, and with one side wall 24b facing the outside of the railway vehicle.

  The power conversion device 10 converts DC power into AC power and supplies it to an electric motor, an air conditioner, etc., an inverter circuit (not shown), a cooling device that cools the power semiconductor element of the inverter circuit, and a switching signal to the power semiconductor element of the inverter circuit A control unit 20 for transmitting and receiving, a detector, a power supply unit, and the like are provided, and these are arranged in the housing 24.

  As shown in FIGS. 2 to 5, the control unit 20 that controls the inverter circuit or the like is connected to a plurality of control circuit boards 34 including a control circuit board unit 30, an interface circuit board 32, and the like, and these control circuit boards 34 are connected. Wiring board unit 40. Each control circuit board 34, for example, the control circuit board unit 30, includes a rectangular printed circuit board 36 on which a plurality of electronic components such as transistors, resistors, and capacitors are mounted, and one side edge of the printed circuit board 36. And one or a plurality of first connectors 38 mounted thereon.

  A support base 50 is placed on the inner surface of the bottom wall 24 d of the housing 24. The support base 50 has a plurality of support grooves 52 formed on the upper surface thereof and extending in parallel with each other. The plurality of control circuit boards 34 are placed on the support base 50 with their lower end side edges engaged with the support grooves 52, and are erected substantially perpendicular to the support base 50. As a result, the plurality of control circuit boards 34 are arranged in parallel at predetermined intervals. The first connectors 38 of the plurality of control circuit boards 34 are arranged side by side in the same direction.

  The wiring board unit 40 includes a wiring board 44 on which a wiring pattern 42 is formed, a plurality of mounting connectors 46 mounted on the wiring board 44 and electrically connected to the wiring pattern 42, and a wiring board 44 mounted on the wiring board 44. And a plurality of wiring connectors 48 electrically connected to the pattern 42.

  The wiring board 44 is opposed to one side edge of the plurality of control circuit boards 34, and a first portion 44 a disposed substantially perpendicular to the control circuit boards 34 and the support base 50, and the first portion 44 a. A second portion 44b that extends outward from the portion 44a beyond the control circuit board 34 is integrally provided. The lower end of the first portion 44 a is supported on the support base 50.

  The plurality of outfitting connectors 46 of the wiring board unit 40 are mounted on the second portion 40b of the wiring board 44, and are arranged along the traveling direction A of the railway vehicle 12, that is, the arrangement direction of the plurality of control circuit boards 34. They are arranged side by side in parallel. These outfitting connectors 46 penetrate the side wall 24c of the casing 24 and are exposed to the outside.

  The plurality of wiring connectors 48 are mounted on the first portion 40 a of the wiring board 44, and are arranged in two rows in parallel with the arrangement direction of the plurality of control circuit boards 34. The wiring connectors 48 in each row are arranged at predetermined intervals in the arrangement direction, and the two rows of wiring connectors are arranged in pairs in the vertical direction.

The wiring board unit 40 further includes a plurality of second connectors 54 provided in the first portion 40 a and connected to the wiring pattern 42.
The wiring board unit 40 configured in this way is directly connected to the plurality of control circuit boards 34. That is, the two first connectors 38 of each control circuit board 34 are directly connected to the corresponding two wiring connectors 48 of the wiring board unit 40. To the outfitting connector 46, a transmission line 57 extending from the vehicle body 17 side, a control power supply line 58, or a wiring routed from another underfloor device is connected. Accordingly, the plurality of control circuit boards 34 are electrically connected to the transmission line, the control power supply line, or the wiring routed from other underfloor devices through the wiring board unit 40, and the control circuit boards 34 are connected to each other. Are also electrically connected through the wiring board unit 40.

  In addition, wiring from other devices provided in the housing 24 is connected to the connector 54 of the wiring board unit 40. As a result, other devices are also electrically connected to the control circuit board 34, the transmission line, the control power supply line, and the wiring routed from other under-floor devices through the wiring board unit 40.

  As described above, the wiring of the equipment connector, the control circuit board unit, the interface circuit board, and the like is constituted by the wiring board 44 in the power conversion device 10, and each circuit board of the control circuit board unit and the interface circuit board is provided on the wiring board 44. Are directly connected by a connector. In addition, the wiring board 44 has a connector 54 for connecting to another device of the power conversion device 10.

According to the underfloor apparatus having the above-described configuration, wiring between the outfitting connector 46 and each control circuit board 34 is eliminated, and effective use of wiring space, cost reduction, and unit connection work are facilitated. In addition, since the wiring is greatly reduced, the weight of the apparatus can be reduced, the wire support can be eliminated, and the wiring work at the time of manufacturing can be greatly shortened. At the same time, it is possible to suppress the temperature rise in the housing due to the heat radiation of the wiring.
The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined.

  The present invention is not limited to the power conversion device described above, and can be applied to other underfloor devices. The wiring board of the wiring board unit is not limited to a rigid printed wiring board, and a flexible printed wiring board can also be used. As shown in FIG. 6, the wiring board unit 40 may be provided in a direction substantially parallel to the ceiling wall 24 a of the housing 24, and various arrangements are possible depending on the installation situation in the housing 24. is there.

DESCRIPTION OF SYMBOLS 10 ... Power converter device, 12 ... Vehicle, 17 ... Vehicle body, 24 ... Housing,
30 ... Control circuit board unit, 32 ... Interface circuit board,
34 ... control circuit board, 38 ... first connector, 40 ... wiring board unit,
40a ... 1st part, 40b ... 2nd part, 42 ... wiring pattern,
44 ... Printed circuit board, 46 ... Outfitting connector, 48 ... Wiring connector,
54 ... Second connector

Claims (3)

The body,
A control circuit board unit having a circuit board and a first connector mounted on the circuit board, and disposed in the housing;
An interface circuit board having a circuit board and a first connector mounted on the circuit board, and disposed in the housing;
A wiring board on which a wiring pattern is formed; a mounting connector mounted on the wiring board and exposed to the outside of the casing; and a plurality of wiring connectors mounted on the wiring board; and disposed in the casing. A wiring board unit,
The first connector of the control circuit board unit and the first connector of the interface circuit board are directly connected to the wiring connector of the wiring board unit.   The wiring connectors of the wiring board unit are provided side by side at intervals, and the control circuit board unit and the interface circuit board are arranged to face each other in parallel, and are in a direction substantially orthogonal to the wiring board, respectively. The under-floor device for a railway vehicle according to claim 1 extending.   The wiring board is opposed to the control circuit board unit and the interface circuit board, and has a first portion where the plurality of wiring connectors are disposed, and the control circuit board unit and the interface circuit board are passed from the first portion. The underfloor device for a railway vehicle according to claim 1, further comprising: a second portion extending outward and having the outfitting connector mounted thereon.

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