JP5423587B2 - Electrical equipment - Google Patents

Description

  The present invention relates to an electric apparatus such as a welding power source device having a dustproof structure.

  In recent years, the operating rate of industrial equipment has become very high. In such a situation, the ease of maintenance is also regarded as important for electrical equipment such as a welding power supply device that outputs current and voltage for welding.

  In a welding power supply device, when cooling a main semiconductor (for example, a switching element such as a power transistor) that generates high heat, the entire circuit portion in the welding power supply device is cooled by focusing air on the heat sink. Is common. And what is made to inhale in the air welding power supply apparatus outside a welding power supply apparatus, discharges the air inside a welding power supply apparatus outside, and cools the inside of a welding power supply apparatus is known (for example, refer patent document 1). .

  This welding power supply device has a top plate of the welding power supply unit housed inside, a length that is provided inside the housing and substantially the same as the depth of the housing, one end is fixed to the housing, and the fixed end is a fulcrum Using the two dust-proof L-shaped rails that rotate as described above, the two dust-proof L-shaped rails are in contact with the top plate of the welding power source, thereby dividing the interior of the welding power source into two upper and lower spaces. An upper space in which electronic parts and the like are arranged is a dust-proof area separated from a lower space into which air flows from the outside of the welding power source.

JP 2009-248116 A

  In the conventional welding power supply device, the dust-proof L-shaped rail is not in contact with the top plate of the welding power supply unit because the rotating dust-proof L-shaped rail is not in an appropriate position for the dustproof configuration. Even when the upper space of the housing is not dust-proof, the length of the dust-proof L-shaped rail is almost the same as the depth of the case, so the welding power supply device can be operated with the case door closed. Can be done.

  If the dust-proof L-shaped rail is not arranged at an appropriate position, the top of the welding power source and the dust-proof L-shaped rail cannot be reliably partitioned into the upper and lower spaces, and the electronic The upper space where the parts and the like are placed cannot be made a dust-proof area separated from the lower space. When the welding power supply device is operated in such a state, the members and the like placed in the lower space are cooled. When the cooling fan is driven, dust or the like enters the lower space of the welding power source from the outside of the welding power source, and further, dust or the like in the lower space penetrates into the upper space that should originally be a dust-proof area. May end up.

  As a result, welding fumes or the like are deposited or adhered in the upper space of the welding power source device, and maintenance in the upper space is also required, so that there is a problem of spending time on the maintenance of the welding power source device.

  An object of this invention is to provide the welding power supply device which improves maintainability and ensures reliability.

  In order to solve the above-described problems, a welding power source apparatus of the present invention includes a box-shaped housing having a left side plate, a right side plate, a rear surface plate, an upper surface plate, a lower surface plate, and an openable / detachable front plate, and the housing. A welding power supply unit that has a top plate that is substantially the same as the inside dimension of the body and is housed in the housing with the front plate of the housing being opened or removed or taken out of the housing; and the housing A first rail member provided inside the left side plate of the body, a second rail member provided inside the right side plate of the housing, and a first rail member provided outside the left side surface of the welding power source. 3 rail member, a fourth rail member provided outside the right side surface of the welding power source, and a length provided above the first rail member inside the left side plate of the housing. It is substantially the same as the inner depth dimension of the left side surface of the housing and is directly or directly on the left side plate. It has at least two surfaces, a surface that comes in contact and a surface that comes into direct or indirect contact with the top plate of the welding power source, and has an elongated hole for sliding in a substantially vertical oblique direction along the left side plate. The first slide member is provided above the second rail member on the inner side of the right side plate of the casing and has a length that is substantially the same as the inner depth dimension of the right side surface of the casing. A length for sliding in a substantially vertical oblique direction along the right side plate, comprising at least two surfaces: a surface that directly or indirectly contacts and a surface that directly or indirectly contacts the top plate of the welding power source. A second slide member having a hole and an axis through which the first slide member is slid by being inserted into the elongated hole of the first slide member, and the first slide member is moved to the housing at a desired position. Fixed inside the left side plate of the body A first fixing member for inserting the second slide member into an elongated hole of the second slide member and serving as a shaft for sliding the second slide member, and the second slide member at a desired position. A second fixing member for fixing to the inner side of the right side plate of the body, the first slide member and the first sliding member in a state in which the welding power source is housed in the housing by opening or removing the front plate. The two slide members are slid substantially vertically downward along the long holes provided in each of the slide members and fixed in contact with the top plate of the welding power supply unit. The inside of the housing is partitioned into two upper and lower spaces by one slide member and a second slide member, while the first slide member and / or the second slide member serves as a top plate of the welding power source section. If it is not in contact In this case, one end of the first slide member and / or one end of the second slide member protrudes from the front plate side of the housing to the outside of the housing, and the front plate can be closed or attached. It will disappear.

  In addition to the above, the electrical device of the present invention has a shape of the front end portion of the first rail member and the second rail member provided on the inner side of the housing toward the front plate side. The slope shape is inclined vertically downward.

  In addition to the above, in the electric device of the present invention, the welding power supply unit includes a wheel, and the third rail provided in the welding power supply unit on the first rail member provided in the housing. When the member is placed and the welding power supply unit is housed in the housing such that the fourth rail member provided in the welding power supply unit is placed on the second rail member provided in the housing. The first rail member and the second rail member are in the housing at a position where a space is created between the bottom plate of the housing and the lower end of the wheel of the welding power source. And the third rail member and the fourth rail member are provided in the welding power source section.

  Moreover, in addition to the above, the electrical device of the present invention has an urging portion for urging the welding power source portion vertically downward when the welding power source portion is housed in the housing, on the inner side of the rear plate of the housing. It is provided.

  Further, in addition to the above, the electrical device of the present invention has an elongated hole provided in the first slide member and the second slide member. Is a shape in which a substantially horizontal hole in the same direction as the substantially vertical horizontal direction is connected, and is for sliding the first slide member and the second slide member in an oblique direction.

  Moreover, in addition to the above, the electrical device of the present invention is provided with a seal member on a surface in contact with the third rail member among the plurality of surfaces of the first slide member, and the plurality of surfaces of the second slide member. Among them, a seal member is provided on a surface in contact with the fourth rail member, the first slide member is brought into contact with the top plate of the welding power source part via the seal member, and the second slide member is interposed via the seal member. Is brought into contact with the top plate of the welding power source section.

  In addition to the above, the electric device according to the present invention is an electric device according to any one of claims 1 to 6, wherein the first slide member and the second slide member are members having a substantially L-shaped cross section.

  As described above, according to the present invention, when an appropriate dustproof structure is not provided, an operator or the like can easily recognize the dust, and by properly realizing the dustproof structure, dust or the like can be added to the dustproof part. It is possible to provide a welding power source apparatus that can prevent intrusion, suppress the time required for maintenance of the dustproof portion, improve the maintainability, and have reliability.

The figure which shows the state which removed the front plate in the state which accommodated the welding power supply part of the welding power supply apparatus in Embodiment 1 of this invention. The figure which shows the state which has the welding power supply part of the welding power supply apparatus in Embodiment 1 of this invention in the exterior of a housing | casing. The figure which shows schematic structure of the housing | casing of the welding power supply apparatus in Embodiment 1 of this invention. The figure which shows the state of the process in which the welding power supply part of the welding power supply apparatus in Embodiment 1 of this invention is accommodated in the inside of a housing | casing. The figure which shows the state which accommodated the welding power supply part of the welding power supply apparatus in Embodiment 1 of this invention in the inside of a housing | casing. The figure which shows the state which accommodated the welding power supply part of the welding power supply device in Embodiment 1 of this invention in the inside of a housing | casing, and has arrange | positioned the L-shaped member in the position which touches the top plate of a welding power supply part. The figure which shows the state of the vicinity which attached the L-shaped member of the welding power supply device in Embodiment 1 of this invention. The figure which shows the state of the vicinity which attached the L-shaped member of the welding power supply device in Embodiment 1 of this invention. (A) The figure which shows the arrangement | positioning state of the L-shaped member before making the L-shaped member of the welding power supply device in Embodiment 1 of this invention contact the top plate of a welding power supply part (b) Implementation of this invention The figure which shows the arrangement | positioning state of an L-shaped member when making the L-shaped member of the welding power supply apparatus in form 1 contact the top plate of a welding power supply part. The figure which shows the L-shaped member provided with the long hole in Embodiment 1 of this invention The figure which shows the L-shaped member provided with the long hole in Embodiment 1 of this invention The figure which shows the state of the vicinity which attached the L-shaped member in Embodiment 1 of this invention. The figure which shows the state which provided the urging | biasing part for urging | biasing a welding power supply part perpendicularly downward, when the welding power supply part in Embodiment 1 of this invention was accommodated in the housing | casing in the rear surface board.

(Embodiment 1)
1 and 2 are diagrams showing a schematic configuration of a welding power source apparatus. FIG. 3 is a diagram illustrating a schematic configuration of a casing of the welding power source apparatus.

  The welding power supply device includes a housing 1. The housing 1 has a substantially box shape having a front plate 12, a left plate 13, a right plate 14, a rear plate 15, an upper plate 11, and a lower plate 16.

  FIG. 1 shows a state where the front plate 12 constituting the housing 1 is removed. The front plate 12 opens the front surface portion of the housing 1 when the welding power source portion 2 is housed in the housing 1 or when the welding power source portion 2 is taken out of the housing 1 and maintenance is performed. It is a metal plate to be attached and detached for the purpose. Note that the front plate 12 may be configured to open and close as a door instead of a detachable configuration.

  FIG. 2 shows a state in which the welding power source unit 2 is taken out from the housing 1. And FIG. 3 has shown the state which looked at the housing | casing 1 after taking out the welding power supply part 2 from the front left diagonal.

  4 to 6 show an example of a process of inserting and storing the welding power source unit 2 in the housing 1, although details will be described later.

  7 and 8, which will be described in detail later, show a state in the vicinity of the housing 1 where the first L-shaped member 7 is attached, and on the left side plate 13 side of the housing 1. The first rail member 3 provided, the third rail member 5 provided in the welding power source 2, the first L-shaped member 7 provided in the housing 1, and the housing 1 The 1st fixing member 9 provided in is shown. Examples of the first fixing member 9 include screws and bolts.

  FIG. 1 shows a state in which the welding power source unit 2 is housed in the lower part of the housing 1 with the front plate 12 removed. The welding power supply unit 2 has a substantially box shape, and has a top plate 18 having substantially the same dimensions as the inner dimensions of the housing 1 as shown in FIGS. 1 and 2.

  Further, as shown in FIG. 1, the cross section is substantially L-shaped above the top plate 18 of the welding power source 2 and inside the left side plate 13 of the housing 1 as shown in FIGS. The first L-shaped member 7 is provided which is substantially the same as the inner surface dimension of the left side plate 13 of the casing 1 which is in contact with the length. As shown in FIGS. 1 and 3, the right side plate of the casing 1 is provided. 14 is provided with a second L-shaped member 8 having a substantially L-shaped cross section and substantially the same as the inner surface dimension of the right side plate of the casing 1 in contact with the length.

  Further, as shown in FIGS. 1 and 2, the welding power source unit 2 is provided with wheels 17 for moving the welding power source unit 2 for maintenance or the like. The height of the wheel 17 varies depending on the material, shape, time, etc., and does not become constant. Therefore, the height of the welding power source unit 2 does not become constant. Therefore, as will be described later, when a sealed structure is formed by the top plate 18 of the welding power source 2, the first L-shaped member 7, and the second L-shaped member 8, the position of the top plate 18 is not constant. This hinders the realization of a sealed structure.

  Therefore, in the present embodiment, the third rail member 5 provided in the welding power source unit 2 is placed on the first rail member 3 provided in the housing 1, and the second rail provided in the housing 1. When the welding power supply unit 2 is housed in the housing 1 so that the fourth rail member 6 provided in the welding power supply unit 2 is placed on the rail member 4, the lower surface plate 16 of the housing 1 and the welding power source The first rail member 3 and the second rail member 4 are provided in the housing 1 at a position where a space is generated between the lower end of the wheel 17 of the portion 2 and the third rail member 5. A fourth rail member 6 is provided in the welding power source unit 2.

  When the welding power source unit 2 is housed in the housing 1, the first rail member 3 provided in the housing 1 and the third rail member 3 provided on the welding power source unit 2 and mounted on the first rail member 3. The rail member 5 functions as a rail for housing the welding power source unit 2, and the second rail member 4 provided in the housing 1 and the welding power source unit 2 are provided to the second rail member 4. The fourth rail member 6 that is placed on the rail functions as a rail for housing the welding power source unit 2. More specifically, the third rail member 5 is placed on the first rail member 3, and the fourth rail member 6 is placed on the second rail member 4. . Then, the third rail member 5 is slid on the first rail member 3, and the fourth rail member 6 is slid on the second rail member 4. As a result, the welding power source 2 is slid toward the inside of the housing 1 to accommodate the welding power source 2 in the housing 1.

  As described above, the first rail member 3, the second rail member 4, the third rail member 5, and the fourth rail member 6 function as rails, so that the welding power supply unit 2 is moved into the housing 1. It can be stably inserted and stored.

  Further, the first rail member 3 and the second rail member 4 provided in the housing 1 are arranged on the front plate 12 side of the housing 1, that is, the housing 1 as shown in FIGS. The shape of the tip portion on the opening side is a slope shape that is inclined vertically downward toward the opening side of the housing 1. Thereby, the height of the lower surface plate 16 of the housing 1 is high, and the third rail member 3 provided in the welding power source unit 2 on the first rail member 3 and the second rail member 4 provided in the housing member 1 is provided. Even if it is difficult to place the rail member 5 and the fourth rail member 6, the slope-shaped portion of the first rail member 3 and the second rail member 4 provided in the housing 1 is formed by the slope shape. When the third rail member 5 and the fourth rail member provided in the welding power source unit 2 are placed on the top, the insertion of the welding power source unit 2 into the housing 1 can be started, and the slope is not formed. In comparison, the welding power source 2 can be smoothly inserted and accommodated in the housing 1 without any problem.

  Next, the structure of the welding power supply part 2 is demonstrated. As shown in FIG. 2, a printed circuit board 19 that is not required to be forcedly cooled by the outside air and that needs to be dust-proof is disposed on the top plate 18 that constitutes the welding power source unit 2. In addition, on the top plate 18 of the welding power source unit 2, an electronic component 20 such as a switching power source or an electromagnetic contactor that does not require forced cooling by the outside air and needs dust prevention is disposed.

  On the other hand, below the top plate 18 of the welding power source unit 2, a member that requires forced air cooling using outside air, such as a highly exothermic coil or a semiconductor, not shown, is provided. Accordingly, the lower region of the top plate 18 is a region in which outside air is taken and forced air cooling is performed, so that dust, welding fumes, and the like enter.

  The welding power supply device has such a structure, and it is necessary to allow the welding power supply unit 2 to be taken in and out of the housing 1 in order to perform maintenance of the welding power supply unit 2 and the like. In order to allow the welding power source unit 2 to be taken in and out of the housing 1, a first gap 21 as shown in FIG. 12 exists between the left and right side plates of the housing 1 and the welding power source unit 2. To do. Although details will be described later, the first gap 21 is closed by the first L-shaped member 7 coming into contact with the top plate 18, thereby ensuring the sealing of the upper space in the housing 1. Here, as shown in FIG. 7 and FIG. 12, a sealing material 22 such as rubber is provided between the first L-shaped member 7 and the top plate 18, and the first L-shape is interposed via the sealing member 22. By adopting a configuration in which the shape member 7 is brought into contact with the top plate 18, the sealing performance can be further improved.

  In addition, there is a second gap 23 between the third rail member 5 provided in the welding power source 2 and the first rail member 3 provided in the housing 1, but the first L-shape is also present. It can be indirectly blocked by the member 7 to ensure the sealing of the upper space in the housing 1.

  7 and 12, the sealing on the left side plate 13 side of the casing 1 has been described. However, the right side surface 14 side of the casing 1 has the same configuration, and the upper space in the casing 1. Can be secured. Although details are not shown, specifically, a sealing material 22 such as rubber is provided between the second L-shaped member 8 and the top plate 18, and the second L-shape is interposed via the sealing member 22. The shape member 8 is brought into contact with the top plate 18 and is fixed by the second fixing member 10, thereby performing sealing.

  Next, the long hole 24 and the long hole 25 provided in the first L-shaped member 7 as shown in FIG. 10 and the operation of the first L-shaped member 7 by the long hole 24 and the long hole 25. This will be described with reference to FIGS. 9A and 9B. Although not shown and described, the second L-shaped member 8 is the same as the first L-shaped member 7.

  When the welding power supply unit 2 is inserted and stored in the housing 1, the first L-shaped member 7 is inserted as shown in FIG. 9A in the state before insertion as shown in FIGS. 2 and 4. The first fixing member 9 is used for fixing. 4 and 5 show the same state. Next, as shown in FIG. 1 and FIG. 5, after insertion of the welding power source unit 2 into the housing 1, as shown in FIG. The first L-shaped member 7 is lowered vertically downward along the long hole 24 and the long hole 25 as compared with the state of FIG. 6 and 8 also show a state in which the first L-shaped member 7 is lowered obliquely downward so as to be in contact with the top plate 18 of the welding power source unit 2.

  Further, when the seal member 22 is provided on the first L-shaped member 7, the first L-shaped member 7 is pushed inward from the opening side of the housing 1, while the seal member 22 is crushed and The first L-shaped member 7 is slid vertically downward so that the one L-shaped member 7 does not protrude from the housing 1, and the first L-shaped member 7 is attached to the housing 1 by the first fixing member 9 without protruding. Fix to the left side plate 13.

  In addition, when the shape of the long hole for sliding the first L-shaped member 7 is simply a linear shape extending in the vertical direction, the first L-shaped member 7 is simply arranged only in the vertical direction. It is difficult to determine whether or not the first L-shaped member 7 is in a state of being surely lowered so as to be in contact with the top plate 18 of the welding power source unit 2 only by moving up and down.

  However, as in the present embodiment, as shown in FIG. 10, the long holes 24 and the long holes 25 include a substantially horizontal hole, a substantially vertical downward hole, and a subsequent substantially horizontal hole. As a result, the first L-shaped member 7 is configured to be movable in an oblique direction so that the first L-shaped member 7 is in contact with the top plate 18 of the welding power source unit 2. It becomes easy for the operator to determine whether or not the vehicle is reliably lowered.

  The reason that the discrimination becomes easy in this manner is that if the first L-shaped member 7 is not surely lowered, the first L-shaped shape is removed from the housing 1 as shown on the left side of FIG. Since the tip end portion of the member 7 is in a protruding state, it is easy for the operator to determine by visual recognition. Furthermore, since the front plate 12 cannot be attached to the housing 1 in a state in which the front end portion of the first L-shaped member 7 protrudes from the housing 1, the operator can also make the first L It can be recognized that the letter-shaped member 7 is not reliably lowered and the dust-proof state is insufficient.

  In the present embodiment, the first L-shaped member 7 is provided with two long holes, a long hole 24 and a long hole 25, and the long hole 25 provided on the rear plate 15 side of the housing 1 is provided. This is thicker than the long hole 24 provided on the front plate 12 side of the housing 1.

  In addition, since the shape of the long hole provided in the 1st L-shaped member 7 should just be the thing which the 1st L-shaped member 7 moves to the diagonal direction, the long hole 26 and the long hole 27 which are shown in FIG. It is good also as a simple shape of slanting straight line like.

  Moreover, in this Embodiment, FIG. 13 is principal part sectional drawing of the housing | casing 1 in the state which took out the welding power supply part 2 from the housing | casing 1. FIG. The urging | biasing part 28 provided in the rear surface board 15 of the housing | casing 1 is demonstrated using FIG.

  After the welding power source unit 2 is housed in the housing 1, if the rear surface plate 15 side of the welding power source unit 2 is not fixed and remains as it is, for example, the welding power source unit 2 is caused by vibration during transportation of the welding power source device. There is a risk that it floats in the housing 1 and a large vibration due to this is applied to the components etc. provided in the welding power source 2, and in some cases, the components etc. provided in the welding power source 2 are damaged. There is. Therefore, in order to prevent the welding power source unit 2 from being lifted, the rear plate 15 of the housing 1 is provided with a biasing portion 28 that biases the welding power source unit 2 vertically downward. When the welding power source unit 2 is housed, the urging unit 28 urges the welding power source unit 2 downward in the vertical direction, thereby suppressing vibrations of the welding power source unit 2 and improving safety.

  In addition, the wheel 17 of the welding power source unit 2 may not have a constant height due to the material, shape, passage of time, and the like. For this reason, the height of the welding power source unit 2 may not be constant. If the height of the welding power source unit 2 is not constant as described above, the biasing unit 28 cannot sufficiently bias the welding power source unit 2. Therefore, in the present embodiment, the third rail member 5 provided in the welding power source unit 2 is placed on the first rail member 3 provided in the housing 1, and the second rail provided in the housing 1. The lower rail 16 of the housing 1 and the lower end of the wheel 17 of the welding power source 2 are not in contact with each other so that the fourth rail member 6 provided in the welding power source 2 is placed on the rail member 4. Thus, since the welding power supply unit 2 is urged by the urging unit 28 in a state where the position in the height direction of the welding power supply unit 2 is constant, the urging unit 28 can work effectively.

  Moreover, the urging | biasing part 28 is realizable by attaching to the rear surface board 15 of the housing | casing 1 the member which bent the iron plate vertically downward, for example.

  In the present embodiment, the first rail member 3, the second rail member 4, the third rail member 5, the fourth rail member 6, the first L-shaped member 7, The second L-shaped member 8 is provided substantially horizontally.

  In the present embodiment, the first L-shaped member 7 and the second L-shaped member 8 whose cross-sectional shape in the vertical direction with respect to the length direction is substantially L-shaped will be described as an example of the slide member. did. However, the present invention is not limited to this, and at least a surface that directly or indirectly contacts the left side plate 13 or the right side plate 14 of the housing 1 and a surface that directly or indirectly contacts the top plate 18 of the welding power source unit 2. Any member having two surfaces may be used.

  Here, the welding power supply device according to the present embodiment is used together with, for example, an industrial robot. An industrial robot control device is arranged on the welding power supply device, and the welding power supply device and the robot control device are arranged. It can also be used as an integrated device.

  According to the electrical equipment of the present invention, it is possible to prevent the accumulation and adhesion of dust, welding fumes, etc. on the conductive part, improve the maintainability of the equipment, and ensure the reliability of the equipment. In addition, it is industrially useful as an electric device such as a welding power source device that separates a part that needs to be dust-proof and a part that does not need to be protected.

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Welding power supply part 3 1st rail member 4 2nd rail member 5 3rd rail member 6 4th rail member 7 1st L-shaped member 8 2nd L-shaped member 9 1st Fixing member 10 second fixing member 11 upper surface plate 12 front surface plate 13 left side plate 14 right side plate 15 rear surface plate 16 lower surface plate 17 wheel 18 top plate 19 printed circuit board 20 electronic component 21 first gap 22 seal member 23 second Clearance 24 Long hole 25 Long hole 26 Long hole 27 Long hole 28 Biasing part

Claims (7)

A box-shaped housing having a left side plate, a right side plate, a rear surface plate, an upper surface plate, a lower surface plate, and an openable / detachable front plate;
A welding power supply unit that has a top plate that is substantially the same as the inner dimension of the housing and is housed in the housing with the front plate of the housing opened or removed or taken out of the housing;
A first rail member provided inside the left side plate of the housing;
A second rail member provided inside the right side plate of the housing;
A third rail member provided outside the left side surface of the welding power source,
A fourth rail member provided outside the right side surface of the welding power source,
Provided above the first rail member on the inner side of the left side plate of the casing, the length is substantially the same as the inner depth dimension of the left side surface of the casing, and directly or indirectly contacts the left side plate. A first slide having at least two surfaces, a surface and a surface directly or indirectly contacting the top plate of the welding power source section, and having a long hole for sliding in a substantially vertical oblique direction along the left side plate. Members,
Provided above the second rail member on the inner side of the right side plate of the casing, the length is substantially the same as the inner depth dimension of the right side surface of the casing, and is in direct or indirect contact with the right side plate. And a second slide having a long hole for sliding in a substantially vertical oblique direction along the right side plate. Members,
The shaft is inserted into the elongated hole of the first slide member and serves as a shaft for sliding the first slide member, and the first slide member is fixed to the inside of the left side plate of the housing at a desired position. A first fixing member;
The shaft is inserted into the long hole of the second slide member and serves as a shaft for sliding the second slide member, and the second slide member is fixed to the inside of the right side plate of the housing at a desired position. A second fixing member;
In a state where the front plate is opened or removed and the welding power supply unit is housed in the housing, the first slide member and the second slide member are inclined substantially vertically downward along the elongated holes provided respectively. By sliding in the direction and being fixed in a state of being in contact with the top plate of the welding power source unit, the inside of the housing is vertically moved by the top plate, the first slide member, and the second slide member. When the first slide member and / or the second slide member are in a position where they do not come into contact with the top plate of the welding power source section, one end of the first slide member and An electrical device in which one end of the second slide member protrudes from the front plate side of the housing to the outside of the housing, and the front plate cannot be closed or attached. The shape of the front-end | tip part part by the side of the front plate of the 1st rail member and the 2nd rail member provided in the inside of a housing | casing was made into the slope shape which inclined to the said front plate side vertically downward. The electrical equipment described. The welding power supply unit includes wheels, and a third rail member provided in the welding power supply unit is placed on a first rail member provided in the housing, and a second rail provided in the housing is provided. When the welding power supply unit is housed in the housing such that the fourth rail member provided in the welding power supply unit is placed on the rail member, the lower surface plate of the housing and the welding power supply unit The first rail member and the second rail member are provided in the housing at a position where a space is generated between the lower end of the wheel and the third rail member and the fourth rail member. The electric device according to claim 1, wherein a rail member is provided in the welding power source unit. The urging portion for urging the welding power source portion vertically downward when the welding power source portion is housed in the housing is provided inside the rear plate of the housing. Electrical equipment. The elongated holes provided in the first slide member and the second slide member are a substantially horizontal hole, a substantially vertical downward hole that follows this, and a substantially horizontal direction that follows the substantially vertical horizontal direction. 5. The electrical device according to claim 1, wherein the electrical device has a shape in which a hole is connected, and is configured to slide the first slide member and the second slide member in an oblique direction. A seal member is provided on a surface in contact with the third rail member among a plurality of surfaces of the first slide member, and a seal member is provided on a surface in contact with the fourth rail member among the plurality of surfaces of the second slide member. And a first slide member is brought into contact with the top plate of the welding power source through the seal member, and a second slide member is brought into contact with the top plate of the welding power source through the seal member. The electrical device according to any one of 1 to 5. The electric device according to claim 1, wherein the first slide member and the second slide member are members having a substantially L-shaped cross section.

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