JP2009142884A - Power device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve such a problem that an input terminal cover is left uninstalled after being removed or sometimes falls off accidentally, since a conventional power device is designed to have a terminal base therein for wiring on the input side, with a cable connected thereto and designed to install an input terminal cover therein for preventing an electric shock due to exposure of the connected part, wherein the input terminal cover is made removable from outside the power device. <P>SOLUTION: As a slidable input terminal cover, it is designed to be locked unless the top plate of the power device is taken off, so that the input terminal cover is not easily opened, preventing it from being left uninstalled or from falling off, for example. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power supply device such as a welding power supply device that receives power from an external device and operates, and particularly relates to a cover attached to the power supply device.

  The conventional power supply apparatus has a structure in which a terminal block is provided by opening a part of the casing of the power supply apparatus as wiring on the input side, and power is received by connecting a cable to an external device using this terminal block. And it was the structure which provided the input terminal cover in order to prevent the electric shock by the connection part of a terminal block being exposed (for example, refer patent document 1). The input terminal cover has a structure that can be removed from the outside of the power supply device. In some cases, the input terminal cover is not attached after the input terminal cover is removed or the input terminal cover is detached.

  A welding power supply device which is an example of the power supply device will be described with reference to FIG.

In FIG. 8, the welding power source device 21 includes an input terminal block (not shown) and has a structure in which the input terminal block is covered with an input terminal cover 22.
Design Registration No. 1138461

  The conventional welding power source device 21 has a structure in which a terminal block is provided on the welding power source device 21 as wiring on the input side, and a cable is connected to receive power from an external device (not shown), and an input terminal cover is provided to prevent the connection portion from being exposed. 22 was provided. The input terminal cover 22 has a structure that can be removed from the outside of the welding power source device 21. After the input terminal cover 22 is removed, the input terminal cover 22 may not be attached or the input terminal cover 22 may be removed.

  The power supply device of the present invention has a structure in which the input terminal cover can be slid, and the input terminal cover can be opened only by removing the top plate of the welding power source. The purpose is to provide.

  In order to solve the above problems, a power supply device according to the present invention includes a housing, a top plate that constitutes the housing and whose outer periphery is bent into a substantially L shape, and a terminal portion for receiving power from the outside. And a lower end side fixed to a side surface of the housing, the terminal portion is exposed by rotating in a horizontal direction, and a cover that covers the terminal portion in contact with the side surface of the housing by rotating in a vertical direction; The cover is pivoted in the vertical direction so that the top plate is attached to the case in contact with the side surface of the case, so that a part of the cover is placed inside the bent portion of the top plate. It is located and prevents the said terminal part from exposing by the horizontal rotation of the said cover after attaching the said top plate.

  In the power supply device of the present invention, in addition to the above, the cover includes a cover base part and a cover part slidably attached to the cover base part, and the cover base part is provided on a side surface of the casing. The cover portion is fixed, the cover base portion is provided with elongated holes on each of two opposing surfaces positioned in a direction perpendicular to the surface in contact with the housing, and the cover portion faces each other. A caulking nut is provided inside each of the two surfaces, and the cover part is slidably attached to the cover base part by an elongated hole of the cover base part and a caulking nut of the cover part, and from the outside of the cover part A bolt is screwed into the caulking nut, and a nut is screwed into the bolt via a washer from the inside of the cover base.

  As described above, according to the power supply device of the present invention, the cover covering the terminal portion cannot be opened unless the top plate is removed, and the cover is attached to the power supply device when the cover is not opened. By adopting a structure that cannot be removed from the housing, a power supply device with improved safety can be realized.

  Moreover, the workability | operativity in a terminal part can be improved by comprising a cover from a cover part and the said cover base part, and making a cover part the structure which can be slid with respect to the said cover base part.

(Embodiment)
Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 is an external perspective view of a welding power supply device 1 which is an example of a power supply device. In FIG. 1, an input terminal cover 2 for covering an input terminal block 5 to be described later is attached to the side surface of the casing of the welding power source apparatus 1. A top plate 6 is attached to the upper surface of the welding power source device 1. As will be described later, the outer peripheral portion of the top plate 6 is bent in a substantially L shape downward in the vertical direction.

  FIG. 2 is an enlarged view of a main part showing a state where the input terminal cover 2 in FIG. 1 is opened. In FIG. 2, an input terminal block 5 for receiving electric power from the outside is provided on the side surface of the welding power source apparatus 1. The input terminal cover 2 that covers the input terminal block 5 includes an input terminal cover portion 3 and an input terminal cover base portion 4. In addition, the input terminal cover part 3 and the input terminal cover base part 4 are fastened by the structure mentioned later. Further, the input terminal cover 2 is attached to the casing by attaching the input terminal cover base portion 4 to the casing of the welding power source apparatus 1. The input terminal cover portion 3 is provided with a protruding portion 7.

  FIG. 3 is a diagram showing a schematic configuration of the input terminal cover portion 3 and the input terminal cover base portion 4. As shown in FIG. 3, the input terminal cover 3 is provided with a caulking nut (clinching nut) 8 on each of two opposing surfaces. The input terminal cover base 4 is provided with elongated holes 9 on each of two opposing surfaces located in a direction perpendicular to the surface in contact with the casing of the welding power source device 1.

  FIG. 4 is a diagram illustrating a fastening process between the input terminal cover 3 and the input terminal cover base 4. In FIG. 4, for example, the input terminal cover 3 is opened to the outside and the caulking nut 6 is fitted into the elongated hole 9 of the input terminal cover base 4, or the input terminal cover base 4 is closed inward to form the elongated hole 9. Fit the caulking nut 6 of the input terminal cover 3. In this way, the input terminal cover 3 and the input terminal cover base 4 are integrated. Further, the bolt 10 is screwed to the caulking nut 6 from the outside of the input terminal cover 3, and the nut 12 is screwed to the bolt 10 from the inside of the input terminal cover base 4 via the washer 11 to input The terminal cover part 3 and the input terminal cover base part 4 are fastened. FIG. 5 is an enlarged view of a main part of the fastening portion. Thus, by screwing the nut 6 from the inside of the input terminal cover base 4, the input terminal base 5 cannot be removed from the outside while the input terminal cover 2 covers the input terminal base 5.

  Then, as shown in FIG. 6, the input terminal cover 2 is attached to the casing by attaching the input terminal cover base 4 to the side surface of the casing of the welding power source apparatus 1. The input terminal cover base 4 is attached to the housing by, for example, providing a through hole in the input terminal cover base 4, providing a screw hole in the housing, and passing a bolt (not shown) through the input terminal cover base 4. This is done by screwing into the screw hole of the housing through the hole. The position where the bolt is fixed is a position where the input terminal block 5 is covered with the input terminal cover 2 and cannot be removed from the outside. Then, the cable 13 for receiving power from the external device is passed through the cable passage hole provided in the input terminal cover base 4, and the cable 13 is connected to the input terminal base 5. Then, as shown in FIG. 1, the input terminal block 5 is covered with the input terminal cover 2, and in this state, the top plate 6 is attached and the top plate 6 is fixed. Accordingly, as shown in FIG. 7, the protruding portion 7 which is a part of the input terminal cover portion 3 is positioned inside the bent portion of the top plate 6, and the input terminal cover portion is attached after the top plate 6 is attached. It is possible to prevent the input terminal block 5 from being exposed by rotating 3 in the horizontal direction. That is, the input terminal cover 3 cannot be opened unless the top plate 6 is removed.

  The input terminal cover 2 of the present embodiment includes an input terminal cover portion 3 and an input terminal cover base portion 4, and the input terminal cover portion 3 is a mechanism that can slide with respect to the input terminal cover base portion 4. . Therefore, when the cable 13 is attached to or detached from the input terminal portion 5, the input terminal cover portion 3 can be slid to secure a wide working space in the input terminal cover 2, and workability can be improved. For example, when the input terminal cover portion 3 is not a slide mechanism but is simply structured to be rotatable, the input terminal cover portion 3 is used to open the input terminal cover 2 while the cable 13 is passed as shown in FIG. , The input terminal cover 3 hits the cable 13 and the input end cover 3 cannot be opened widely, making the operation difficult. However, the input terminal cover 2 of the present embodiment has a slide mechanism. Therefore, the input terminal cover 3 can be slid with respect to the input terminal cover base 4, and then the input terminal cover 3 can be rotated to open the input terminal cover 2. It is possible to easily perform such operations.

  As described above, according to the welding power source apparatus 1 of the present embodiment, the input terminal cover 2 covering the input terminal portion 5 cannot be opened unless the top plate 6 is removed, and the input terminal cover If the input terminal cover 2 cannot be removed from the casing of the welding power source device 1 in a state where 2 is not opened, the welding power source device 1 with improved safety can be realized.

  Further, the input terminal cover 2 is composed of an input terminal cover portion 3 and an input terminal cover base portion 4, and the input terminal cover portion 3 is configured to be slidable with respect to the input terminal cover base portion 4. Workability such as connection of the cable 13 in the portion 5 can be improved.

  The power supply device of the present invention can prevent the input terminal portion from being exposed and can improve safety. Therefore, the power supply device is industrially useful as a power supply device that operates by receiving power from the outside.

The figure which shows schematic structure of the welding power supply device in embodiment of this invention. The principal part enlarged view which shows the state which open | released the cover of the welding power supply device in embodiment of this invention The figure which shows schematic structure of the input terminal cover part which comprises the input terminal cover in embodiment of this invention, and an input terminal cover base part The figure which shows schematic structure of the input terminal cover in embodiment of this invention The enlarged view of the fastening location of the input terminal cover part and input terminal cover base part in embodiment of this invention The principal part enlarged view which shows the state which open | released the cover of the welding power supply device in embodiment of this invention The expanded principal part sectional drawing which shows the positional relationship of the top plate in the embodiment of this invention, and the protrusion part of an input terminal cover part. The figure which shows schematic structure of the conventional welding power supply device

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Welding power supply device 2 Input terminal cover 3 Input terminal cover part 4 Input terminal cover base part 5 Input terminal block 6 Top plate 7 Protruding part 8 Clamping nut 9 Long hole 10 Bolt 11 Washer 12 Nut 13 Cable 21 Welding power supply apparatus 22 Input terminal cover

Claims (2)

A housing,
The top plate which comprises the said housing | casing and the outer periphery was bent by the substantially L shape,
A terminal for receiving power from the outside;
A lower end side is fixed to a side surface of the housing, and the terminal portion is exposed by rotating in a horizontal direction, and a cover that covers the terminal portion in contact with the side surface of the housing by rotating in a vertical direction is provided. ,
A part of the cover is located inside the bent portion of the top plate by attaching the top plate to the housing in a state in which the cover is rotated in the vertical direction and in contact with the side surface of the housing. A power supply device that prevents the terminal portion from being exposed by rotating the cover in a horizontal direction after the top plate is attached. The cover is composed of a cover base part and a cover part slidably attached to the cover base part,
The cover base is fixed to a side surface of the housing, and the cover is rotatable.
The cover pedestal has a long hole in each of two opposing surfaces located in a direction perpendicular to the surface in contact with the housing,
The cover portion includes a caulking nut inside each of two opposing surfaces,
The cover part is slidably attached to the cover base part by a long hole of the cover base part and a caulking nut of the cover part,
The power supply device according to claim 1, wherein a bolt is screwed into the caulking nut from the outside of the cover portion, and a nut is screwed into the bolt from the inside of the cover base portion via a washer.