KR101919822B1

KR101919822B1 - Inverter case and solar cell inverter including the same

Info

Publication number: KR101919822B1
Application number: KR1020110100812A
Authority: KR
Inventors: 조상욱; 하지욱; 신대기
Original assignee: 엘지전자 주식회사
Priority date: 2011-10-04
Filing date: 2011-10-04
Publication date: 2019-02-08
Also published as: KR20130036618A

Abstract

An inverter case according to an embodiment of the present invention includes a first case part and a second case part which form an internal space for accommodating an inverter member; And an opening / closing member that engages or opens the first case part and the second case part. The opening and closing member includes a power shutoff member for supplying power to the inverter member at the time of engagement and for interrupting the power supply of the inverter member at the time of opening.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an inverter case,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inverter case and a solar cell inverter including the same, and more particularly, to an inverter case having improved structure and a solar cell inverter including the inverter case.

The inverter is a device that converts DC power into AC power so that it can be applied to the product to be used, and is also referred to as an inverter. Various inverter parts for changing DC power to AC power exist in the inverter device.

When such an inverter is required to be repaired or confirmed, the inverter case must be opened. In order to prevent electric shock, the power source involved in the operation of the inverter components must be cut off. And a structure using a safety pin to cut off power. However, in this structure, the structure for installing the safety pin is complicated, and the process of removing the safety pin and opening the inverter case is complicated. Thus, there is a problem that it takes much time and cost.

An embodiment of the present invention is to provide an inverter case having a simple structure and capable of safely shutting off power when opened, and a solar battery inverter including the inverter case.

A solar cell inverter according to an embodiment of the present invention includes an inverter member for converting DC power generated by a solar cell into AC power; And a case accommodating the inverter member. The case includes: a first case part and a second case part which form an internal space into which the inverter member can enter; And an opening / closing member for engaging or disengaging the first case part and the second case part. The opening and closing member includes a power shutoff member for supplying power to the inverter member at the time of engagement and for interrupting the power supply of the inverter member at the time of opening.

According to the embodiment of the present invention, the opening and closing member for opening the case includes the power shutoff member, so that the power of the inverter member is automatically shut off when the case is opened. This reduces the risk of accidents and protects the safety of workers. Further, the case can be opened easily by a simple operation of rotating the opening and closing member, and opening due to a mistake can be minimized.

In addition, one side of the case can be fastened with screws to further improve stability. Then, the case can be opened easily while maximizing the safety.

1 is an exploded perspective view showing an inverter case in a coupled state in an inverter according to an embodiment of the present invention.
2 is an exploded perspective view showing an inverter case in an open state in the inverter of FIG.
Fig. 3 is a perspective view showing the opening and closing member used in the inverter of Figs. 1 and 2. Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, it is needless to say that the present invention is not limited to these embodiments and can be modified into various forms.

In the drawings, the same reference numerals are used for the same or similar parts throughout the specification. In the drawings, the thickness, the width, and the like are enlarged or reduced in order to make the description more clear, and the thickness, width, etc. of the present invention are not limited to those shown in the drawings.

Wherever certain parts of the specification are referred to as "comprising ", the description does not exclude other parts and may include other parts, unless specifically stated otherwise. Also, when a portion of a layer, film, region, plate, or the like is referred to as being "on" another portion, it also includes the case where another portion is located in the middle as well as the other portion. When a portion of a layer, film, region, plate, or the like is referred to as being "directly on" another portion, it means that no other portion is located in the middle.

FIG. 1 is an exploded perspective view showing an engaged state of an inverter including an inverter case according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing an opened state of the inverter of FIG.

Referring to the drawings, an inverter 100 according to the present embodiment includes an inverter member 40 for converting DC power into AC power, an inverter case (hereinafter referred to as "case ") 10 for accommodating the inverter member 40, . The case 10 includes a first case portion 12 and a second case portion 14 which are coupled to or opened from each other, and an opening / closing member 20 which engages or opens them. This will be explained in more detail.

The inverter member 40 is electrically connected to various electronic elements (not shown) capable of converting DC power into AC power, plugs (not shown) for connection, various electronic elements, And a switch member 49 for supplying or cutting off the power supply of the inverter member 40. [ A variety of methods or structures can be applied to the electronic elements, the plugs, and the display member 42, so a detailed description thereof will be omitted.

In the present embodiment, for example, when the switch member 49 is in the downward position with respect to the drawing, the inverter member 40 is kept in the ON state, and when the switch member 49 is moved to the upper position, 40 are turned off. However, it is needless to say that the switch member 49 may be applied in various ways or structures. In this embodiment, the switch member 49 is disposed on the rear surface of the display member 42. However, this is merely an example. Therefore, the switch member 49 may be provided at any position as long as the switch member 49 is provided inside or outside the inverter 100.

The case 10 includes a first case part 12 and a second case part 14 that form an internal space into which the inverter member can enter by engagement with each other.

The first case part 12 may include an outer case part 112 and an inner case part 114 as a case part constituting the back side of the case 10. [ The outer case portion 112 constitutes a back surface and a side surface of the case 10. The inner case part 114 may be fixed so as to protrude slightly toward the front side from the inside of the outer case 112. The inner case part 114 may be fixed to the outer case part 112 by various methods (e.g., screwing, fitting, gluing). At this time, the inner case part 114 may have a back surface and a side surface, and may have only a side surface as shown in the figure.

The second case portion 14 is a case portion constituting the front side of the case 10, and can constitute the front face and the side face of the case 10. The second case portion 14 has a window portion 143 at a portion corresponding to the display member 42 so that an image displayed on the display member 42 can be seen from the outside.

The second case portion 14 can be aligned with the outer case portion 112 in a stepped manner outside the inner case portion 114. That is, the first case part 12 and the second case part 14 may be coupled such that the outer surface of the outer case part 112 and the outer surface of the first case part 14 are located on the same plane. However, the present invention is not limited to this, and various modifications are possible, for example, the first case part 12 may be constituted by a single case part or the second case part 14 may be constituted by a plurality of case parts.

At this time, the first case part 12 and the second case part 12 are fitted to each other by the fitting between the grooves 126a and 126b formed in the first case part 12 and the protrusions 146a and 146b formed in the second case part 14, Thereby releasably securing the part 14 to the user.

More specifically, grooves 126a and 126b may be formed in the inner case part 114 of the first case part 12. When the protrusions 146a and 146b of the second case part 14 are inserted into the grooves 126a and 126b, the inner case part 114 and the second case part 12 are fixed, The two case portions 14 can be matched without a step.

The grooves 126a and 126b are formed in the first case portion 12 (more specifically, the inner case portion 114) and the protrusions 146a and 146b are formed in the second case portion 14 ) Was formed. However, the present invention is not limited thereto, and it is possible to deform the outer case part 112 and / or the inner case part 114 with protrusions and the second case part 14 with a groove.

In the above description and drawings, grooves 126a and 126b are formed on the upper and lower surfaces of the first case part 12 (more specifically, the inner case part 114) and the second case part 14, And the protrusions 146a and 146b are formed. However, the present invention is not limited thereto, and the grooves 126a and 126b and the protrusions 126a and 126b may be formed at various positions such as the upper and lower, left and right sides, or the edges of the outer case part 112, the inner case part 114 and the second case part 14, (146a, 146b) may be formed.

When the case 10 is fixed only by the grooves 126a and 126b and the projections 146a and 146b described above, it can be easily opened by an external impact or the like. Thus, in the present embodiment, the opening and closing member 20 is provided so that it can not be opened by an external impact or the like but can be easily opened by an operation of the operator.

In this embodiment, the opening and closing member 20 includes a handle member 22, a first engaging member 24, a rotating shaft 28, a power source blocking member 29, the same applies hereinafter) and the second engaging member 26 located in the second case portion 14. [ In the present embodiment, the opening and closing member 20 is operated by the rotation, and the opening and closing member 20 can be prevented from operating by mistake or the like as in the case of the lever.

The knob member 22 is installed outside the first case part 12 so as to be easily rotated by the operation of the operator. The rotary shaft 28 can be rotated by the rotation of the pull member 22 in conjunction with the pull member 22. [ The rotation shaft 28 may be installed to cross the inside of the first case part 12. [

A first engaging member 24, which rotates in conjunction with the rotating shaft 28, is located inside the first case part 12. [ And a second engaging member 26 is fixedly installed inside the second case portion 14 at a position corresponding to the first engaging member 24. The first and second engaging members 24 and 26 may be positioned on both sides of the case 10 so that both sides of the case 10 can be firmly fixed.

3) is formed on the first engaging member 24 and the engaging portion 26a (reference numeral 26a in Fig. 3) is formed on the second engaging member 26 so that the engaging portion 24a is engaged with the engaging portion 24a , The same applies hereinafter) may be formed. The first engaging member 24 and the second engaging member 26 can be fixed by the engaging part 24a and the engaging step 26a so that the first case part 12 and the second case part 14 can be firmly fixed.

And a power shutoff member 29 is provided in association with the rotation shaft 28. The power cutoff member 29 is provided to supply power to the inverter member 40 when the case 10 is engaged and to shut off the power supply to the inverter member 40 when the case 10 is opened. For example, the power-off member 29 has a fixing member 292 to which the switch member 49 is inserted and fixed. The switch member 49 is moved while the fixing member 292 is moved by rotation The power of the inverter member 40 can be supplied or cut off. However, the present invention is not limited to this, and it is enough if the switch member 49 can be operated in various ways to supply or cut off the power of the inverter member 40.

The operation of the opening and closing member 20 in this embodiment will be described in more detail with reference to Fig. Fig. 3 is a perspective view showing the opening and closing member used in the inverter of Figs. 1 and 2. Fig. 3, the dotted line indicates when the case 10 is engaged, and the solid line indicates when the case 10 is open.

As shown by the dotted lines in FIG. 1 and FIG. 3, if no external force acts on the pull tab 22, the case 10 remains engaged. The engaging portion 24a of the first engaging member 24 located on the side of the first case portion 12 is engaged with the engaging tab 26a of the second engaging member 26 located on the side of the second case portion 14, . The power cutoff member 29 causes the switch member 49 fixed to the engagement plate 292 to be placed in an on state so that the inverter member 40 is supplied with power.

2 and 3, when the knob member 22 is rotated for repair or internal confirmation, the first case part 12 and the second case part 14 are separated from each other, and the case 10 is opened do. The engaging part 24a of the first engaging member 24 located on the first case part 12 is rotated by the rotating shaft 28 and the second engaging member 26 located on the second case part 14 side, And is released from the stopping jaw 26a. Whereby the first case portion 12 and the second case portion 14 are separated from each other. At the same time, the power supply shutting member 29, which is interlocked with the rotation shaft 28 by the rotation of the rotation shaft 28, is moved by rotation so that the switch 29 fixed to the fixing member 292 of the power shutoff member 29 The member 49 is also moved upward to be placed in the off state. Then, the power of the inverter member 40 is cut off.

As described above, in this embodiment, when the handle member 22 is rotated to open the case 10, the switch member 49 is moved to the OFF state by the power supply cut-off member 29. Thus, when the case 10 is opened, the power of the inverter member 40 is automatically shut off, thereby reducing the risk of accidents and protecting the safety of the operator. In addition, the case 10 can be easily opened by a simple operation of rotating the pull-tab 22.

The first case part 12 and the second case part 14 may be fixed to each other by screws 12b in order to more firmly engage the case 10 in this embodiment. For example, a first screw hole 12a may be formed at a portion protruding from the lower side of the outer case 112, and a bolt 12c may be fixed to the inner surface thereof. The second screw hole 14a may be formed on the lower surface of the second case 14 corresponding to the position where the first screw hole 12a is formed. The first case 12 (more specifically, the outer case 112) and the second case 12 (second case) are formed by screwing the screw 12b into the first and second screw holes 12a and 14a, The case 14 can be fixed. The screw 12b prevents the user from easily opening the case 10, and the stability can be further increased.

A method of opening the case 10 will now be described. First, when the screw 12b on one side (for example, the lower side) of the case 10 is removed and the knob member 22 is turned, the power source of the inverter member 40 is automatically shut off and the case 10 is opened . As described above, in the present embodiment, the case 10 can be easily opened while maximizing safety.

The inverter 100 having the case 10 of the present embodiment can be applied as a solar battery inverter for converting DC power generated by a solar cell into AC power. However, the present invention is not limited thereto and can be applied to various apparatuses.

Features, structures, effects and the like according to the above-described embodiments are included in at least one embodiment of the present invention, and the present invention is not limited to only one embodiment. Further, the features, structures, effects, and the like illustrated in the embodiments may be combined or modified in other embodiments by those skilled in the art to which the embodiments belong. Therefore, it should be understood that the present invention is not limited to these combinations and modifications.

100: Inverter
10: Inverter case
12: First case
14: Second case
20:
22: Handle member
24: first coupling member
26: second coupling member
28: rotation axis
29:
49: Switch member

Claims

A first case part and a second case part which form an internal space for accommodating the inverter member; And
An opening / closing member for engaging or disengaging the first case part and the second case part,
Lt; / RTI >
Wherein the opening and closing member includes a power shutoff member for supplying power to the inverter member at the time of engagement and for cutting off the power of the inverter member at the time of opening;
A pulling member provided rotatably on the outside of the first case portion; a rotating shaft rotated in conjunction with the pulling member; And
A first engaging member provided in the first case portion and rotated in conjunction with the rotation shaft; and a second engaging member fixed to the second case portion in correspondence with the first engaging member,
And the power shutoff member is interlocked with the rotation shaft.

The method according to claim 1,
Wherein the power shutoff member includes a fixing member to which a switch member connected to a power source of the inverter member is fixed,
And the fixing member moves the position of the switch member to supply or block the power of the inverter member at the time of the engagement or the opening.

delete

The method according to claim 1,
The first engagement member includes a latching portion,
And the second engagement member has a latching jaw for receiving the latching portion.

The method according to claim 1,
Wherein the first engagement member and the second engagement member are located on both sides of the inside of the inverter case.

The method according to claim 1,
Wherein the first case portion and the second case portion further comprise grooves and projections that are engaged by fitting.

The method according to claim 1,
Wherein the first case part and the second case part are fixed by screws on one side.

The method according to claim 1,
Wherein the first case part includes an outer case part and an inner case part located inside the outer case,
Wherein an outer surface of the second case portion and an outer surface of the outer case are located side by side on the same plane.

11. The method of claim 10,
Wherein the inner case part and the second case part further comprise grooves and projections joined by fitting.

11. The method of claim 10,
Wherein the outer case portion and the second case portion are fixed by screws on one side.

An inverter member for converting DC power generated by the solar cell into AC power; And
A case for housing the inverter member
Lt; / RTI >
The case includes: a first case part and a second case part which form an internal space into which the inverter member can enter; And an opening / closing member for engaging or disengaging the first case part and the second case part,
Wherein the opening and closing member includes a power shutoff member for supplying power to the inverter member at the time of engagement and for cutting off the power of the inverter member at the time of opening;
A pulling member provided rotatably on the outside of the first case portion; a rotating shaft rotated in conjunction with the pulling member; And
A first engaging member provided in the first case portion and rotated in conjunction with the rotation shaft; and a second engaging member fixed to the second case portion in correspondence with the first engaging member,
Wherein the power shutoff member is interlocked with the rotation shaft
Solar Inverter.