JP2555762B2 - Power converter installation equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is an in-panel installation type in which a bottom surface of a conversion device is installed on a wall surface of a control panel when installing a power conversion device such as an inverter in a control panel. The present invention relates to a power converter installation device having two types of installation methods, namely, an external cooling type in which only the heat dissipation part at the bottom of the converter is exposed outside the panel through an opening provided in the wall surface.

The in-board installation method is also used when installing on the wall of a building.

[Conventional technology]

FIG. 4 is a front view of Conventional Example 1, and FIG. 5 is a perspective view of Conventional Example 2. Hereinafter, the in-panel installed type may be abbreviated as an inner type and the external cooling type may be abbreviated as an outer shape. In addition, the power conversion device is usually installed on a vertical wall surface, and the following terms representing its posture are as follows: the upper and lower sides are the front side and the wall surface side in the actual installation, and the longitudinal direction is the upper and lower sides in the actual installation. It means the direction, etc.

In FIG. 4, an upper box 1a having an upper plate 2 of the box 1
A semiconductor element, a printed board, a switch, a terminal block, and other electric circuit parts are housed in the lower box 1b having a lower side plate 3 and a cooling body provided with fins for cooling the semiconductor element, and a blower for ventilation. And other cooling parts are stored.

For internal installation, the installation tool 4 is detachably attached to the lower side plate 3 with the screw 4a, and installed on the wall surface 6 with the bolt 5. To change to the external installation, the installation tool 4 is removed, and the wall surface 8 having the opening 7 is installed with bolts 9.

The upper side plate 2 and the lower side plate 3 are provided with a difference in width to form a horizontal abutting surface 10 so as to abut against the wall surface 8 to ensure stability of installation and dustproof property inside and outside the wall surface 8. . Therefore, the box body 1 forms the contact surface 11 by providing a dimensional difference also in the width direction (front and back direction of the paper surface).

In the conventional example 1, the installation tool 4 is unnecessary for external installation and is useless, and the installation tool 4 may be lost when changing to the internal installation. Further, since the contact surfaces 10 and 11 are provided in the width direction and the longitudinal direction, there is a difference in the plane area between the upper box body 1a and the lower box body 1b, and the storage area of the cooling parts of the lower box body 1b is small. Insufficient cooling is likely to occur, or the space for storing the electric circuit components of the upper box 1a is large and wasteful space is likely to occur. However, an appropriate space can be obtained by adjusting the vertical size of both, but in any case, it is difficult to absorb the dimensional difference of the contact surface in the design, and the box tends to be large. .

In FIG. 5 showing Conventional Example 2, an upper box body composed of an upper side plate 2 having an inner width A and a lower box body composed of a lower side plate 3 having an inner width B contact with each other with no dimensional difference in the longitudinal direction. It has no surface, but has a contact surface 10 in the width direction.

If the upper installation tool 13a for the outer shape, which is mounted on the inner side of the upper side plate 2 and has the pair of mounting plates 12a having the outer dimension A, is fixed from the through hole 15a with a screw (not shown), the installation plate 14a of the upper installation tool 13a is opened. It can be installed and fixed by abutting against a wall surface (not shown) that has a part, and at the same time it also keeps dustproofness by closing the longitudinal gap. Naturally, at that time, the contact surface 10 contacts the wall surface to maintain the stability of installation and the dustproof property.

By mounting the lower mounting fixture 13b for the inner shape having a pair of mounting plates 12b of the outer dimension B mounted inside the lower side plate 3 with screws through the through holes 15b, the mounting plate 14b of the lower mounting fixture 13b can be attached to the wall surface. Can be installed internally.

Therefore, the upper fixture 13a and the lower fixture 13b are two types of fixtures due to the difference between the dimensions A and B for securing the installation surface.

[Problems to be Solved by the Invention]

In the prior art described above, in Conventional Example 1, a contact surface for external shape installation is required in the width direction and the longitudinal direction, and the difference in plane area between the upper box body and the lower box body is large. There is a problem that it is difficult to absorb the dimensional difference in the design, and the mounting tool becomes unnecessary in the external mounting.

Further, in Conventional Example 2, since the abutting surface in the longitudinal direction is not necessary and it is not necessary to provide the dimensional difference in the longitudinal direction, the difficulty in design due to the difference in the flat area is improved, but two types of fixtures are required. However, there is a problem that one is unnecessary after installation.

An object of the present invention is that the abutting surface between the upper box and the lower box does not exist in the longitudinal direction but exists only in the width direction. It is an object of the present invention to provide an installation device of a power conversion device that can be used for both installation methods by using the same installation tool for.

[Means for solving the problem]

The installation device of the power converter of the present invention 1 is such that the width of both sides of the lower side plate is made narrower than the width of both sides of the upper side plate of the box body of the power converter to form a horizontal contact surface at the side plate joint portion, Installation plates having a horizontal plane at the position contacting the outside in the longitudinal direction of the box body and having installation holes, a pair of mounting plates provided on both sides of the installation plate and parallel to the both side plates, and screws and through holes for mounting on the mounting plates. A mounting tool is composed of a hole, and the outer and inner dimensions of the pair of mounting plates are the same as the inner dimension A of the upper side plate and the outer dimension C of the lower side plate, and are inserted into both side plates. With the box side through hole corresponding to the female screw on the upper side plate,
A box-side female screw corresponding to the through hole is provided on each of the lower side plates, and is fixed by the screws.

A power converter installation device according to a second aspect of the present invention is the power converter installation device according to the first aspect, wherein the thickness of the mounting plate is less than half the value obtained by subtracting the outer dimension C of the lower side plate from the inner dimension A of the upper side plate. Alternatively, a push-out portion in the side plate direction is provided in the through hole portion, and the outer dimension of the female screw portion and the inner dimension of the through hole portion are the same as the dimension A and the dimension C, respectively.

A third aspect of the present invention provides an installation apparatus for a power conversion device according to the first aspect, wherein the thickness of the mounting plate is less than half the value obtained by subtracting the outer dimension C of the lower side plate from the inner dimension A of the upper side plate. A female screw member is fixed to the portion, and the outer dimension of this female screw member is the same as the dimension A.

An installation device for a power conversion device according to a fourth aspect of the present invention is the installation device for the power conversion device according to the third aspect, wherein the female screw member is a plate member extending to the region of the through hole, and the box side female member is provided at a location corresponding to the through hole of the plate member. A plate material through hole for screwing and fixing the screw is provided.

An installation device of a power conversion device according to a fifth aspect of the present invention is such that a width of both sides of a lower side plate is narrower than a width of both sides of an upper side plate of a box body of the power conversion device, and a horizontal contact surface is formed at a side plate joint portion, Installation from the installation plate that has a horizontal surface at the position that contacts the outside of the box in the longitudinal direction and that has installation holes, a pair of installation plates that are provided on both sides of this installation plate and that are parallel to the both side plates, and screws that are installed on this installation plate The outer dimensions and the inner dimensions of the pair of mounting plates are the same as the inner dimension A of the upper side plate and the outer dimension C of the lower side plate, so that the pair of mounting plates can be mounted by being inserted into both side plates. A box side through hole corresponding to the female screw is provided on the upper side plate and fixed by the upper screw, and a box side female screw corresponding to the lower screw that can be inserted straight into the female screw is provided on the lower side plate, It is fixed with a lower screw.

An installation device of a power conversion device according to an invention 6 is the installation device for an electric power converter according to the invention 5, wherein the thickness of the mounting plate is made thinner than half of the value obtained by subtracting the outer dimension C of the lower side plate from the inner dimension A of the upper side plate. A push-out portion is formed in the side plate direction or a screw member is fixed to the portion, and the outer dimension and the inner dimension of the female thread portion are the same as the dimension A and the dimension C, respectively.

[Action]

According to the first aspect of the present invention, although the contact surface is formed between the upper side plate and the lower side plate and there is a width difference between both side plates, the outside of the pair of mounting plates of the fixture is inside the upper side plate. ,
Further, the inside of the mounting plate comes into contact with the outside of the lower side plate, so that a common condition is provided in the width direction.

Next, a box-side through hole is provided in the upper side plate and a box-side female screw in the lower side plate in correspondence with the female screws and through holes of the mounting plate.Therefore, when installing the fixture on either the upper side plate or the lower side plate, Since it can be fixed with screws from the outside, common conditions for fixing are provided.

In the external cooling type (outer shape) installation, the contact surface of the box body in the width direction and the installation plate of the installation tool close the opening of the wall surface in the longitudinal direction to ensure dustproofness. Naturally, the fixture uses one pair at both ends in the longitudinal direction, which can also be shared.

In the second aspect of the invention, in addition to the function of the first aspect of the invention, since the dimension of the contact surface is sufficient, an attempt is made to use a mounting plate thinner than half the value obtained by subtracting the outer dimension C of the lower side plate from the inner dimension A of the upper side plate. When doing so, the pushing portion in the side plate direction secures the common condition in the width direction.

According to the invention 3, as in the case of the invention 2, when the thin mounting plate is to be used, by fixing the female screw member to the mounting plate, the common condition in the width direction is secured and the strength of the female screw is increased.

In a fourth aspect of the present invention, in the third aspect, the female screw member is provided with a plate material through hole extending to the region of the through hole, and when the fixture is mounted on the lower side plate, it is just between the mounting plate and the box side female screw. Since the plate material through hole of the screw member is located, the lower side plate and the mounting plate do not deform and come close to or contact with each other even when the screw is strongly tightened, and the plate material through hole serves as a space washer.

Invention 5 has a function similar to that of Invention 1, so that the fixture can be used for both the inner dimension A of the upper side plate and the outer dimension C of the lower side plate, and the same fixture can be used for both the outer shape and the inner shape.
The mounting plate has only female threads and no through holes, but by changing the thickness of the screws for mounting, the female screws function as the original female screws when mounted on the upper side plate and mounted on the lower side plate. When, the female screw functions as a through hole.

According to the sixth aspect of the invention, the thickness of the thin mounting plate can be accommodated by the pushing portion or the screw member in the fifth aspect.

〔Example〕

FIG. 1 is a front view of the first embodiment, and a section II of FIG. 2 is added, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a section III-III of FIG. 6 shows a front view of the second embodiment, FIG. 7 is a right side view of FIG. 6, and FIG. 8 is a right side view of the third embodiment. Further, for the sake of clarity of the drawing, although not actually shown, a state in which the fixtures are attached to the outer shape and the inner shape at the same time is shown. The components having the same reference numerals as those in the conventional example and the respective drawings have approximately the same functions, and the description thereof may be omitted.

1 to 3, a mounting plate 14, a notch-shaped mounting hole 16, a reinforcing plate 17 bent into the mounting plate 14, an auxiliary mounting hole 18 to the box body, on both sides of the mounting plate 14. The fixture 13 is composed of a pair of bent mounting plates 12. The mounting plate 12 is provided with a female screw 20 on the outwardly pushing portion 19 by press working and a through hole 22 on the inner pushing portion 21, and the outer dimension A of the pushing portions 19 on both sides (that is, the female screw 20) is the upper portion. Make sure that the inner dimensions of the side plate 32 are
The inner dimension C of the through hole 22 is the same as the outer dimension of the lower side plate 33 so that the upper side plate 32 or the lower side plate 33 is exactly in contact with the outer side or the inner side of the mounting plate when mounted.

When a pair of fixtures are attached to both ends of the box body 1 in the longitudinal direction, a box-side through hole 23 is provided at a position corresponding to the female screw 20 when it is attached to the upper side plate 32, and a through hole when it is attached to the lower side wall 33. Box-side female screws 24 are provided at positions corresponding to 22, respectively. Therefore, when attaching to the upper side plate 32,
The fixture 13 is fixed to the upper side plate 32 by inserting 25a through the box-side through hole 23 and tightening the female screw 20 of the mounting plate 12. Then, using a screw (not shown) on the wall surface 8 having the opening 7
The installation plate 14 is fixed through the box, and the box body 1 is installed as an external cooling type. At this time, the through hole 22 of the mounting plate 12 is not used. Outside air is ventilated from the ventilation holes 1c of the lower box 1b for cooling.

When mounting on the lower side plate 33, the screw 25b (the screw 25a is diverted) is passed through the through hole 22 and fastened to the box side female screw 24, and the fixture 13 is fixed to the lower side plate 33, and the mounting plate 14 is attached to the wall surface 6. It is installed as a fixed type in the panel by fixing. At this time the mounting plate
Twelve female threads 20 are not used. The lower box 1b is cooled by the air inside the panel.

The fixture 13 can be expanded to be used in various types of power converters having different capacities. At that time, the dimensions A and B of the box body are made the same, and the height and the longitudinal direction dimension are changed to accommodate the volume change of the box body.

Example 1 relates to Invention 2. If the mounting plate 12 has a sufficient thickness and is half the thickness of the dimension A minus C, the female screw 20 and the through hole can be provided without providing the extruded portions 19 and 21.
If 22 is provided directly, it relates to Invention 1.

When the mounting plate 12 is thin, either one of the pushing portions 19 or 21 may be used. With or without a push-out portion, a female screw member such as a welding nut or a caulking nut may be fixed instead of the female screw 20, and the invention relates to the invention 3. As the box side female screw 24, a burring female screw or a welding nut can be used.

Further, according to the fifth aspect of the invention, the female screw 20 is increased by one size, and the screw 25a is thickened to be fixed to the upper side plate 32. To fix the lower side plate 33, the female screw 20 and the screw 25b are straight. If the box side female screw 24 is tightened as described above, there are two screw sizes, but the through hole 22 can be omitted. The female screw 20 is a common female screw used for both the female screw and the through hole.

6 and 7 show Embodiment 2 and relate to Invention 4.
A through hole 22 is provided in the female screw member 60 inside the mounting plate 12 of the fixture 13.
It is a plate material extended to the area of. A plate material through hole 62 for the above-mentioned screw 25b which is screwed into and fixed to the box side female screw 24 is provided at a portion of the plate member corresponding to the through hole 22.

Therefore, when the mounting tool 13 is mounted on the lower side plate 33 for the inner shape, the screw 25b penetrates the through hole 22 and the plate material passing hole 62 straightly and is then screwed into the female screw 24 of the lower side plate 33.
When installing the fixture 13 on the upper side plate 33 for external form,
The screw 25a goes straight through the box-side through hole 23 and the through hole 22 provided in the mounting plate 12, and is screwed into the female screw 61 of the female screw member 60. That is, instead of providing the female screw 61 on the female screw member 60 for the outer shape, the conventional female screw 20 of the mounting plate at that position simply serves as a through hole 22, and for the inner shape, the female screw member 60 also has a plate material through hole. 62 is provided.

FIG. 8 shows Embodiment 3 and relates to Invention 6, in which the lower screw 73 for the inner shape is smaller than the upper screw 72 for the outer shape. Since the upper screw 72 is provided to be screwed in, the lower screw 73 is sized to penetrate the female screw 71 of the screw member. A box side female screw 74 is provided on the lower side plate 33, and a lower screw 73 is screwed therein. As shown in the drawing, the through hole 22 and the box side through hole 23 are the first embodiment.
It is provided like.

〔The invention's effect〕

The installation device of the power converter of the present invention 1 is such that the width of both sides of the lower side plate is made narrower than the width of both sides of the upper side plate of the box body of the power converter to form a horizontal contact surface at the side plate joint portion, Installation plates having a horizontal plane at the position contacting the outside in the longitudinal direction of the box body and having installation holes, a pair of mounting plates provided on both sides of the installation plate and parallel to the both side plates, and screws and through holes for mounting on the mounting plates. A mounting tool is composed of a hole, and the outer and inner dimensions of the pair of mounting plates are the same as the inner dimension A of the upper side plate and the outer dimension C of the lower side plate, and are inserted into both side plates. With the box side through hole corresponding to the female screw on the upper side plate,
Since the box side female screws corresponding to the through holes are provided on the lower side plates and fixed by the screws, the contact surface between the upper box body and the lower box body is only in the width direction, so that the flat area The number of control parts is reduced because the design difficulty due to the difference is improved and the same installation tool can be used for both the in-panel installation type and the external cooling type without impairing the dustproof property of the external cooling type. Has the effect of standardization, and there is no risk of waste or loss due to unnecessary parts when using either of the above installation methods, and the customer can freely select the installation method. There is an effect.

Further, the installation device of the power converter of the invention 5 uses a large screw for the outer shape and a small screw for the inner shape instead of providing only the female screw on the mounting plate and not providing the through hole in the first embodiment. Thus, the same effect as that of Invention 1 is obtained.

The invention 2, 3, 4 or 6 can exert the effect of the invention 1 even if the mounting plate is thin by using the pushing portion and the screw member.

[Brief description of drawings]

FIG. 1 is a front view of the first embodiment, and the II cross section of FIG. 2 is added, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is of FIG.
FIG. 4 is a front view of Conventional Example 1, FIG. 5 is a perspective view of Conventional Example 2, and FIG. 6 is a front view of Example 2; VI-VI cross section of FIG. 7 is added, FIG. 7 is a right side view of FIG. 6, and FIG.
FIG. 1 …… Box, 2,32 …… Upper side plate, 3,33 …… Lower side plate, 4,
13,13a, 13b …… Installation tool, 6,8 …… Wall surface, 10,11 …… Abutting surface, 12,12a, 12b …… Mounting plate, 14,14a, 14b …… Installation plate, 1
9,21 …… Extruded part, 20 …… Female thread, 22 …… Through hole, 6
0,70 …… Female thread member, 72 …… Upper thread, 73 …… Lower thread.

Claims (6)

(57) [Claims] 1. A lateral abutting surface is formed at a joint between both side plates by narrowing both sides of the lower side plate to be narrower than the width of both sides of the upper side plate of the box body of the power conversion device, and the outer side in the longitudinal direction of the box body. The installation tool consists of an installation plate that has a horizontal surface and a mounting hole at a position that contacts with the installation plate, a pair of installation plates that are provided on both sides of the installation plate and that are parallel to the both side plates, and screws and through holes that are provided on the installation plate. The outer dimension and the inner dimension of the pair of mounting plates are the same as the inner dimension A of the upper side plate and the outer dimension C of the lower side plate so that the pair of mounting plates can be mounted by being inserted into both side plates. A box-side through hole corresponding to the female screw is provided in the side plate, and a box-side female screw corresponding to the through hole is provided in the lower side plate, respectively, and fixed by screws. 2. The power converter installation device according to claim 1, wherein the thickness of the mounting plate is less than half of a value obtained by subtracting the outer dimension C of the lower side plate from the inner dimension A of the upper side plate. The female screw or the through hole portion is provided with a push-out portion in the side plate direction, and the outer dimension of the female screw portion and the inner dimension of the through hole portion are the same as the dimension A and the dimension C, respectively. Power converter installation device. 3. The power converter installation device according to claim 1, wherein the thickness of the mounting plate is less than half the value obtained by subtracting the outer dimension C of the lower side plate from the inner dimension A of the upper side plate. An installation device for a power conversion device, wherein a female screw member is fixed to the female screw portion, and the outer dimension of the female screw member is the same as the dimension A. 4. The installation device for a power conversion device according to claim 3, wherein the female screw member is a plate member extending to the region of the through hole, and the plate member is provided at a position corresponding to the through hole. An installation device for a power conversion device, wherein a plate material through hole for the screw to be screwed and fixed to the box side female screw is provided. 5. A box body of a power conversion device, wherein the width of both sides of the lower side plate is made narrower than the width of both sides of the upper side plate to form a horizontal contact surface at the joint portion of both side plates, and the outside of the box body in the longitudinal direction. A mounting plate having a horizontal surface and a mounting hole at a position in contact with, a pair of mounting plates provided on both sides of the mounting plate and parallel to the both side plates, and a screw for mounting on the mounting plate to form a mounting tool, The outer dimension and the inner dimension of the pair of mounting plates are the same as the inner dimension A of the upper side plate and the outer dimension C of the lower side plate, respectively, so that the pair of mounting plates can be mounted by inserting into both side plates. A box side through hole corresponding to the female screw is provided and fixed with the upper screw, and a box side female screw corresponding to the lower screw that can be inserted straight through the female screw is provided on the lower side plate and fixed with the lower screw. An installation device for a power conversion device characterized by: 6. The installation device for a power converter according to claim 5, wherein the thickness of the mounting plate is made thinner than half of a value obtained by subtracting the outer dimension C of the lower side plate from the inner dimension A of the upper side plate. A push-out portion in the side plate direction is formed or a screw member is fixed to the female thread portion of the plate, and the outer dimension and the inner dimension of the female thread portion are the same as the dimension A and the dimension C, respectively. Power converter installation device.