JP6674546B2 - Housing for accommodating electric parts and method of manufacturing the same - Google Patents

Description

  The present invention relates to a housing for electric appliances and a method for manufacturing the same, and is particularly suitable for application to a housing for electric appliances in a railway vehicle.

  Generally, under the floor of a railway vehicle, a vehicle drive control device that controls power supplied to a drive motor, an auxiliary power supply device that controls power supplied to on-board electrical equipment such as air conditioning, and a maintenance terminal are provided. A housing that accommodates electrical equipment for railway vehicles, such as a stored security device, is installed.

  The housing for accommodating the electric equipment for railway vehicles is manufactured by joining thin plates, but depending on the joining method, the quality (quality) of the casing is reduced, and in some cases, the railway vehicle accommodated in the joint portion In some cases, the electrical components and their electrical wiring may be damaged.

  Under these circumstances, in recent years, the housing has been devised to maintain the strength of the housing against static stress when the vehicle is stationary or dynamic stress due to vibration during vehicle running. R & D to improve the quality is widely performed and put to practical use.

  As one example of this kind of housing for accommodating electric components, for example, in Patent Document 1, positioning is performed when thin plates are joined together, joined by intermittent fillet welding, and beads are formed so as to correspond to the joined portions. An invention in which a cutout portion to be housed inside is formed is disclosed.

JP 2013-69900 A

  By the way, in general, the casing is formed by forming the outer wall of the casing into a single thin plate and bending the single thin plate by sheet metal processing so as not to reduce the strength of the casing by providing unnecessary joints. The inner wall is fixed to the outer wall at multiple points by intermittent fillet welding.

  In such a housing structure, when the housing is large, the housing top plate and the housing bottom plate also become large, and when a single thin plate is bent by general sheet metal processing, the bending mold and the processed parts become heavy. . For this reason, there is a problem that manpower is required for the work and the number of work steps for manufacturing the housing increases, or a facility such as a crane is required. There is also a problem that an expensive large-sized punching press and bending machine are required. Furthermore, a case cannot be formed with a standard-sized plate material, and there is a problem that a specially-sized large-sized plate material needs to be prepared and a problem of securing a storage space for a special-sized plate material.

  In addition, spot welding is known as a welding method for suppressing distortion deformation. However, when a reinforcing member and an electric component fixing pedestal are joined to a housing top plate and a housing bottom plate, the number of work steps increases or the cost is high. There is a problem that requires equipment. When an inexpensive stationary spot welding machine is used, there is a problem that when processing a large-sized plate material having special dimensions, the processed parts become heavy, requiring human labor, increasing the number of working steps, or requiring facilities such as a crane. There is also a problem that the workpiece may be deformed when transporting the processed part. When a portable spot welder is used, the work can be performed by a small number of people because the welder is movable. However, there is a problem that an expensive portable spot welder is required.

  In addition, although it is possible to join the electric component fixing pedestal by fillet welding, the joining by fillet welding causes distortion deformation in the housing, and there is a problem in that the number of work steps increases to correct the distortion deformation.

  Furthermore, it is possible to join by rivet fastening that can be performed by a small number of people, but it is necessary to separately seal the rivet head exposed on the outside of the housing to maintain strict airtightness, There is a problem that the man-hour increases.

  The present invention has been made in view of the above points, and has as its object to propose a high-quality, high-quality housing for electrical components and a method of manufacturing the same.

In the present invention for solving the above problem, an electric component accommodating housing which yield capacity electrodeposition dignity, comprising a plurality of small housings, the plurality of small enclosure, the side surface of the adjacent small housing The plurality of small casings are connected to each other by being abutted by a fixing material, and each of the plurality of small casings includes a front opening and a room space for accommodating the electrical component, and at least one of the plurality of small casings is provided. A pedestal for fixing the electrical component is connected to the two bottom plates by spot welding, and a contact portion between the side surfaces of the small housing fixed by the fixing material is hermetically sealed by a sealing material.

In the present invention also provides a method for producing the electric component accommodating housing which yield capacity electrodeposition elegant, molded by bending a thin plate into a box-shaped and manufacturing a plurality of small housings, the plurality of small housings Providing each of the bodies with a front opening and a room space for accommodating the electric component, and connecting a pedestal for fixing the electric component to at least one bottom plate of the plurality of small housings by spot welding. And a step of abutting the side surfaces of adjacent small housings of the plurality of small housings with a fixing material, and hermetically sealing a contact portion between the side surfaces of the small housing fixed by the fixing material with a sealing material. And connecting the plurality of small housings so as to be continuous .

  ADVANTAGE OF THE INVENTION According to this invention, the man-hour and the intensity | strength are high, and the housing | casing for electric goods of high quality and its manufacturing method can be implement | achieved.

It is a figure explaining the housing for electric appliances by an embodiment of the invention. It is a figure explaining the housing for electric appliances by which nothing is stored by an embodiment of the invention. It is a figure explaining the housing for electric parts in the divided state by an embodiment of the invention. It is a figure explaining the housing for electric parts in the divided state by an embodiment of the invention. It is a figure explaining the contact part of the housing for electric appliances by an embodiment of the invention. It is a figure explaining the contact part of the housing for electric appliances by an embodiment of the invention.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

(1) Configuration of Housing for Electrical Appliance According to the Present Embodiment In FIGS. 1, 2, 3, and 5, reference numeral 1 denotes the overall housing for electrical appliance according to the present embodiment. As shown in FIG. 1, the electric device housing 1 houses an inverter device 50, and the electric device housing 1 is provided along the top plate contour of the electric device housing 1. The two suspension ears 5 are bolted to the vehicle and fixedly installed in a state of being suspended from the vehicle. In FIG. 1, the longitudinal direction of the housing for accommodating electric components is the traveling direction of the vehicle.

  In the inverter device 50, necessary electric devices are arranged so as to ensure a sufficient insulation distance because a high-voltage portion exists in the electric circuit. In FIG. 1, the inverter device 50 includes a control unit 10 that sends out a control signal, a device unit 11, a power unit unit 20 that supplies power, a resistor unit 30 that brakes the vehicle, and a circuit breaker unit 31 that cuts off leakage. , And the adjacent devices are separated by partitions.

  The respective components of the inverter device 50 are connected to each other by electric wiring, and a conductor bar for a large current, a path for a thin electric wire for a control signal to pass therethrough, and an arrangement place of a fixing bracket are provided in the electric component housing 1. Is secured inside.

  FIG. 2 shows the housing 1 for housing electrical components in a state where nothing is housed. The electrical component housing 1 is divided into thin rooms for each frontage, and the electrical component housing 1 is divided in units of partitioning the room.

  The electrical component housing 1 includes a first small housing 100 that houses the control unit 10 and the device unit 11, a second small housing 110 that houses the power unit, a resistor unit 30, and a circuit breaker unit 31. A third small housing 120 is provided for housing.

  FIG. 3 shows the first small housing 100, the second small housing 110, and the third small housing 120 in a divided state before being joined. The first small housing 100 includes a first small housing top plate 101 and a first small housing bottom plate 102. Similarly, the second small housing 110 includes a second small housing top plate 111 and a second small housing bottom plate 112, and the third small housing 120 includes a third small housing top plate 121 and a third small housing bottom plate. 122 is provided.

  At the time of joining, each side 200 of the first small casing 100, the second small casing 110, and the third small casing 120 is joined to form one electric component housing 1. In addition, this side serves as a thin plate partition that partitions the room.

  FIG. 4 shows a first small case bottom plate 102 to which the first electric component fixing pedestal 103 is joined, a second small case bottom plate 112 to which the second electric component fixing pedestal 113 is joined, and a third electric component fixing pedestal 123. 11 shows the third small housing bottom plate 122 that has been removed.

  The details of the joining portion (hereinafter referred to as a contact portion) will be described with reference to FIGS. FIG. 5 is a view of the housing 1 for accommodating electric components as viewed from above in the vertical direction, and shows a contact portion where the first small housing 100 and the second small housing 110 are joined. FIG. 6 is a diagram showing an AA cross-sectional view of the contact portion in FIG.

  As shown in FIG. 6, the first small casing 100 and the second small casing 110 are joined by a general fixing member 160 such as a bolt or a rivet provided inside the casing. In order to maintain the airtightness, the sealing material 150 is linearly sealed at the contact portion. In the contact portion, the first small housing left side plate 104 and the second small housing right side plate 114 overlap and are joined.

(2) Effects of this Embodiment First small housing top plate 101, first small housing bottom plate 102, second small housing top plate 111, second small housing bottom plate 112, third small housing top plate 121 and the third small housing bottom plate 122 can be made of a plate material of a standard size. For this reason, these plate materials can be manufactured with an inexpensive small-sized punching press and bending machine, and the number of working steps is reduced.

  In addition, as shown in FIG. 4, the first small housing bottom plate 102, the second small housing bottom plate 112, and the third small housing bottom plate 122 are divided and can be transported because they are lightweight. For this reason, a fixed spot welding machine can be used when joining the first electric component fixing pedestal 103, the second electric component fixing pedestal 113, and the third electric component fixing pedestal 123, and distortion deformation can be suppressed with inexpensive equipment. And the number of work steps can be reduced.

  Furthermore, by using the fixing material 160, it is possible to perform joining at a low cost and with less distortion deformation. In addition, since the fixing member 160 is not exposed to the outside of the housing 1 for accommodating electrical components, the work of separately sealing the fixing member 160 is not required, and the operation is facilitated and the number of operation steps can be reduced. In addition, since the plates are overlapped and joined at the abutting portion, the plate thickness is increased, and the strength of the housing 1 for accommodating electric components is increased.

  DESCRIPTION OF SYMBOLS 1 ... Electric article housing | casing, 5 ... Hanging ears, 10 ... Control part, 11 ... Equipment part, 20 ... Power unit part, 30 ... Resistance part, 31 ... Circuit breaker part, 50 ... ... Inverter device, 100 ... First small housing, 101 ... First small housing top plate, 102 ... First small housing bottom plate, 103 ... First electric component fixing base, 104 ... First small Housing left side plate, 110: second small housing, 111: second small housing top plate, 112: second small housing bottom plate, 113: second electric component fixing pedestal, 114: second Right side plate of small housing, 120: third small housing, 121: top plate of third small housing, 122: bottom plate of third small housing, 123: third mounting base for fixing electrical components, 150: seal Material, 160: fixing material, 200: side surface.

Claims (3)

An electrical product housing housing for storing electrical products,
Equipped with multiple small housings,
The plurality of small housings are connected to each other by the side surfaces of the adjacent small housings being abutted by a fixing material,
Each of the plurality of small housings includes a front opening and a room space for accommodating the electric component,
A pedestal for fixing the electric component is connected to at least one bottom plate of the plurality of small housings by spot welding,
The contact portions between the side surfaces of the small housing fixed by the fixing material were hermetically sealed by a sealing material,
Housing for storing electrical components. The fixing material is a rivet or / and a bolt;
請 Motomeko 1 electric component accommodating housing according. A method for manufacturing an electrical component housing for housing electrical components,
Manufacturing a plurality of small housings by bending and molding a thin plate into a housing shape, and providing each of the plurality of small housings with a front opening and a room space for accommodating the electrical component,
Connecting at least one bottom plate of the plurality of small housings to a pedestal for fixing the electric component by spot welding;
Of the plurality of small housings, the side surfaces of adjacent small housings are in contact with a fixing material, and the contact portions between the side surfaces of the small housings fixed by the fixing material are hermetically sealed with a sealing material, Connecting the plurality of small housings in series,
Comprising,
A method of manufacturing a housing for housing electrical components.

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