JP2019193565A - Power conditioner - Google Patents

Abstract

To reduce the width of a body of a power conditioner.SOLUTION: A power conditioner (10) comprises a body (11) having an input-side connection terminal to which a wire for inputting a power is connected, and an output-side connection terminal to which a wire for outputting a power is connected. The body (11) includes a holding part (50) for transporting the body (11) on its top face.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a power conditioner used in a photovoltaic power generation system.

  In a conventional solar power generation system, DC power generated by a solar cell is converted into appropriate DC power and / or appropriate AC power by a power conditioner (Power Conditioning System). The converted power is output to a switchboard or output to an external power system. For this reason, in the casing of the power conditioner, wiring for inputting power from the solar cell and wiring for outputting power to an external device are drawn and connected to various terminals.

JP 2017-099161 A (released on June 1, 2017)

  The wiring may be drawn from an opening on the back surface of the casing or may be drawn from an opening on the bottom surface of the casing (see, for example, Patent Document 1). Compared to the latter case, the former case has an advantage that the aesthetic appearance can be maintained because the wiring is surely concealed. On the other hand, the latter case has an advantage that the work of connecting the wiring to various connection terminals (wiring connection work) is easier than the former case.

  One aspect of the present disclosure has been made to solve the above-described problem, and an object thereof is to provide a power conditioner that can maintain an aesthetic appearance and can easily perform a wiring connection operation.

  In order to solve the above problems, a power conditioner according to an aspect of the present disclosure includes a main body into which a plurality of wires are drawn from the bottom surface, and a lower housing that can be attached to the bottom surface of the main body. The side housing includes an opening that opens from the upper surface to the back surface, and the opening includes an upper surface opening through which the plurality of wires pass from the inside to the main body, and at least a part of the plurality of wires from the outside on the back side. And a back opening that passes through the interior.

  According to said structure, it is opening also between the upper surface opening and back surface opening in a lower housing | casing. Therefore, after drawing the wiring from the outside on the back side from the bottom surface of the main body and connecting the wiring inside the main body, the lower housing is attached to the main body and the wiring is accommodated in the lower housing can do. As a result, the wiring connection work can be easily performed. In addition, since the wiring drawn into the main body from the outside on the back side is concealed by the lower casing, the aesthetic appearance can be maintained.

  The power conditioner may include temporary fixing means for temporarily attaching the lower casing to the main body and fixing means for fixing the lower casing to the main body. Here, examples of the temporary fixing means include a mechanism that can be attached to the main body by moving the lower casing in a certain direction and can be removed by moving in the opposite direction to the direction. It is done. Other examples include an adhesive tape that attaches the lower housing to the main body. Examples of fixing by the fixing means include screwing and caulking.

  In the above case, when the lower casing is attached to the main body, it can be temporarily fixed using the temporary fixing means and then fixed using the fixing means, so that the work efficiency of the attachment is improved. The temporary fixing means preferably functions as positioning means for determining a fixing position for fixing the lower housing to the main body. In this case, the work efficiency of the attachment is further improved.

  In the power conditioner, it is preferable that the lower casing includes a drain hole on a bottom surface for discharging the liquid that has entered the outside to the outside. In this case, even if a liquid such as rainwater enters the inside, the liquid can be discharged to the outside. As a result, it is possible to prevent the wiring in the lower housing from being immersed in the liquid.

  By the way, the wiring from the outside on the back side is usually wiring from an opening formed in the wall surface. The position of the opening of the wall surface varies depending on the construction situation of the wall surface.

  Therefore, in the power conditioner, the opening of the lower housing includes a plurality of the back openings, and the lower housing includes at least a detachable closing member that closes each of the back openings. One may be provided. In this case, one of the back openings of the lower housing can correspond to the positions of various openings on the wall surface, and the remaining back openings can be closed by a closing member. As a result, the inverter can be attached to various positions on the wall surface.

  In the power conditioner, the lower casing may further include a positioning hole for attaching the closing member to a predetermined position at the bottom. In this case, the closing member can be attached to a predetermined position by the positioning hole. Furthermore, since the positioning hole is a through hole provided in the bottom of the lower casing, the positioning hole in which the closing member is not attached to the lower casing functions as the drain hole. be able to.

  In the power conditioner, the main body may be made of metal, and the lower housing may be made of plastic. In this case, the electric circuit inside the main body can be protected from external electromagnetic waves. Further, since the lower casing can be manufactured in various shapes, for example, the temporary fixing means, the drain hole, the positioning hole and the like can be easily formed in the lower casing. Furthermore, the lower casing can be formed in a shape that facilitates fixing by the fixing means. The main body may be one in which a metallic shield member is provided on the inner surface or outer surface of a plastic housing. Even in this case, the electric circuit can be protected from external electromagnetic waves.

  By the way, in this indication, the space for wiring connection work in the lower part in the above-mentioned main part can be narrowed. Thereby, the main body can be miniaturized and the strength of the lower portion of the main body can be improved.

  Therefore, in the power conditioner, the main body may be provided with gripping portions for transporting the main body on the upper surface and the bottom surface of the main body. In this case, it is not necessary to provide a grip portion on the side surface of the main body, and the width of the main body can be reduced.

  In the power conditioner, the main body can be attached with a conduit for accommodating and protecting the wiring on the bottom surface, and the opening of the lower housing has a bottom surface opening through which the conduit tube passes. In addition, the lower housing may be separable forward and backward so as to cut the bottom opening. In this case, the wiring in the conduit attached to the bottom surface of the main body can be drawn into the main body. Accordingly, the wiring concealed by the conduit and the wiring concealed by the lower housing can be drawn into the main body. Furthermore, even if the conduit is attached to the main body, first, the rear portion of the lower housing is attached to the main body, and then the front portion of the lower housing is attached to the main body, The lower casing can be easily attached to the main body.

  According to one aspect of the present disclosure, it is possible to maintain an aesthetic appearance and to easily perform wiring connection work.

(A) shows the structure of the power conditioner in embodiment of this indication, Comprising: It is a front view which shows the structure of the power conditioner which removed the front cover attached to the wall surface, (b) is the said power It is the perspective view which looked up at the conditioner from the lower side. It is a perspective view which shows the structure of the said power conditioner. (A) is the front view which shows the structure of the said power conditioner, (b) is the side view, (c) is the bottom view, (d) is enclosed with the dashed-dotted line (alpha) in (b) It is sectional drawing of a part, (e) is sectional drawing of the part enclosed with the dashed-dotted line (beta) in (b). It is a disassembled perspective view which shows the structure of the power conditioner in the state where the front cover is removed with the front side facing up. (A) is a perspective view which shows the structure of the lower side housing | casing of the said inverter, (b) is the front view, (c) is the side view, (d) is (b) It is AA sectional view, (e) is sectional drawing which expands and shows the drain hole provided in the bottom face of a lower housing | casing. (A) is a perspective view which shows the state which began to apply | coat a slide lid in one back side opening among the both sides of the back surface of the lower housing | casing in the said power conditioner, (b) is a slide lid. It is a perspective view which shows the state which finished the lid | cover. It is a perspective view which shows the attachment procedure to the wall surface of the said power conditioner. (A) (b) (c) (d) is sectional drawing which shows the procedure which attaches the said lower side housing | casing to the bottom face part of a power conditioner main body. It is a front view which shows the structure of the modification of the said power conditioner, Comprising: The structure of the power conditioner which attached to the wall surface and removed the front cover. It is a disassembled perspective view which shows the structure of the lower housing | casing in the power conditioner of a modification with the front side turned up.

  Hereinafter, an embodiment according to an aspect of the present disclosure (hereinafter also referred to as “this embodiment”) will be described with reference to the drawings.

(Application example)
First, an example of a scene to which the present disclosure is applied will be described based on FIG. FIG. 1A shows the configuration of the power conditioner 10 according to one aspect of the present disclosure, and is a front view showing the configuration of the power conditioner 10 attached to the wall surface and with the front cover 13 removed. . (B) of FIG. 1 is the perspective view which looked up the power conditioner 10 attached to the wall surface from which the front cover 13 was removed from the lower side. In FIG. 1A, some members are notched.

  As shown in FIG. 1, the power conditioner 10 includes a main body 11 into which a plurality of wires 4 are drawn from the bottom surface, and a lower housing 20 that can be attached to the bottom surface of the main body 11. Includes an opening that opens from the upper surface to the back surface, and the opening includes an upper surface opening 28 through which the plurality of wirings 4 pass from the inside to the main body 11, and at least a part of the plurality of wirings 4 from the outside on the back side to the inside. And a rear wall opening 22 (back opening).

  According to the above configuration, an opening is also formed between the upper surface opening 28 and the rear wall opening 22 in the lower housing 20. Accordingly, after the wiring 4 from the outside on the back side is pulled in from the bottom surface of the main body 11 and the wiring connection work is performed inside the main body 11, the lower housing 20 is attached to the main body 11 and the wiring is connected to the lower housing 20. 4 can be accommodated. As a result, wiring connection work can be easily performed. Moreover, since the wiring 4 drawn into the main body 11 from the outside on the back side is concealed by the lower housing 20, the aesthetic appearance can be maintained.

(Configuration example)
The embodiment of the present disclosure will be described below with reference to FIGS.

(Configuration of inverter)
The power conditioner of this Embodiment is a power conditioner (Power Conditioning System) used for the grid connection system using photovoltaic power generation.

  The grid interconnection system includes a plurality of solar cells installed on a roof of a house and a power conditioner that converts DC power generated by each solar cell into AC power. This grid interconnection system supplies AC power to the load connected between the power conditioner and the commercial power grid by switching to either grid grid operation or independent operation. is there. Here, the grid interconnection operation means that the power conditioner and the commercial power system are linked and operated. In addition, the self-sustained operation indicates that only the power conditioner is operated, for example, when the commercial power system has a power failure.

  By the way, when installing the power conditioner on the wall surface, draw the wiring 4 exposed from the wall surface from the bottom surface of the power conditioner body and connect it to various connection terminals on the input side switch and output side terminal block of the power conditioner body. There is a case. In this case, since the wiring 4 drawn into the power conditioner body is exposed, it is not preferable from the viewpoint of protection of the wiring 4 and aesthetics. The power conditioner of the present embodiment has been devised to solve these problems.

  The configuration of the power conditioner 10 of the present embodiment will be described based on FIGS. 2 and 3 (a), (b), (c), (d), and (e). FIG. 1A shows the configuration of the power conditioner 10, and is a front view showing the configuration of the power conditioner 10 attached to the wall surface with the front cover 13 removed.

  FIG. 2 is a perspective view showing the configuration of the power conditioner 10. FIG. 3A is a front view showing the configuration of the power conditioner 10. FIG. 3B is a front view showing the configuration of the power conditioner 10. FIG. 3C is a bottom view showing the configuration of the power conditioner 10. FIG. 3D is a cross-sectional view of a portion surrounded by a dashed line α in FIG. FIG. 3E is a cross-sectional view of a portion surrounded by an alternate long and short dash line β in FIG. In the present specification, the front side may be referred to as the front side, and the back side may be referred to as the rear side.

  As shown in FIGS. 2 and 3 (a), (b), (c), (d), and (e), the power conditioner 10 is attached to a substantially rectangular main body 11 and a front half on the lower side of the main body 11. And the concealing duct 3 provided below the main body 11 and on the right rear side of the lower housing 20.

  The power conditioner 10 according to the present embodiment includes a front cover 13 on the front side, and the front cover 13 can be attached to the main body 11 with screws from the front side.

  Moreover, in the power conditioner 10 of this Embodiment, the upper surface front side of the main body 11 is extended upwards, and is extended further back. The upper part of the front cover 13 extends rearward and further downward. As a result, a space where an operator's finger can be inserted is formed on the front side of the upper surface of the power conditioner 10. On the other hand, the lower surface front side of the main body 11 extends downward and further extends rearward. The lower part of the front cover 13 extends rearward. As a result, a space in which the operator's finger can be inserted is formed on the front side of the lower surface of the power conditioner 10.

  By the way, referring to FIGS. 1A and 1B, the wiring 4 from the bottom surface of the main body 11 to various connection terminals simply extends. Therefore, the space for wiring connection work in the lower part in the main body 11 can be narrowed. Thereby, the main body 11 can be downsized and the strength of the lower part of the main body 11 can be improved.

  Therefore, in the power conditioner 10 of the present embodiment, the portions forming the space on the front side of the upper surface and the front side of the lower surface are the grip portions 50 and 51 for transporting the main body 11, respectively. In this case, it is not necessary to provide a grip portion on the side surface of the main body 11, and the width of the main body 11 can be reduced.

  FIG. 4 is an exploded perspective view showing the configuration of the power conditioner 10 with the front cover 13 removed, with the front side facing up. As shown in FIG. 4, when the front cover 13 is removed from the main body 11, for example, the input side switch 15, the output side terminal block 16, and other display units are exposed. A plurality of main body wiring holes 14 through which the wiring 4 from the outside is passed are provided in the main body bottom surface portion 11 a of the main body 11. Therefore, the wiring 4 drawn into the main body 11 from the outside through the main body wiring hole 14 is connected to various connection terminals of the input side switch 15 and the output side terminal block 16.

  Protrusions 12 and 12 projecting from the side surfaces are provided on both side surfaces on the upper side of the main body 11. As shown in FIG. 7, which will be described later, the main body 11 is attached to the mounting base plate 1 by hooking these protrusions 12 and 12 on the hook portion 1c of the mounting base plate 1 fixed to a wall surface (not shown). ing.

  In the present embodiment, the lower housing 20 is provided in order to hide the wiring 4 drawn into the main body 11 from the outside through the main body wiring hole 14. The lower housing 20 is made of plastic and is manufactured by injection molding or the like. Therefore, since the lower housing 20 can be manufactured in various shapes as shown in FIG. 5 described later, for example, the heel opening 24a, the locking portion 27, the drain hole 25, the positioning hole described later are used. 29, the back tube portion 31 and the like can be easily formed in the lower housing 20. The main body 11 is made of metal from the viewpoint of blocking electromagnetic waves from the outside and protecting an electric circuit provided inside, but is not limited thereto. For example, the main body 11 may be one in which a metal shield member is provided on the inner surface or outer surface of a plastic casing. Even in this case, the shield member can block electromagnetic waves from the outside and protect the electric circuit.

  5A is a perspective view showing the configuration of the lower housing 20, FIG. 5B is a front view thereof, FIG. 5C is a side view thereof, and FIG. 5D is a cross-sectional view taken along the line AA in FIG. 5B, and FIG. 5E is a cross-sectional view illustrating an enlarged drain hole 25 provided on the bottom surface of the lower housing 20. is there. FIG. 6A shows a state in which the slide lid 23 (blocking member) has started to be applied to one of the back wall openings 22 existing on both sides of the back surface of the lower housing 20 in the power conditioner 10. It is a perspective view. FIG. 6B is a perspective view showing a state in which the application of the slide cover 23 is completed (closed state).

  As shown in FIGS. 5A, 5 </ b> B, 5 </ b> C, 5 </ b> D, and 5 </ b> E, the lower housing 20 has a bottomed box shape, and the upper surface becomes the upper surface opening 28. In addition, two back wall openings 22 and 22 are formed on the back side.

  The two back wall openings 22 and 22 are used for the wiring 4 to be drawn into the lower housing 20 through the concealing duct 3 through one of the back wall openings 22. In that case, the other back wall opening 22 must be closed because rainwater or the like enters when the other back wall opening 22 is left open. For this reason, as shown to (a) (b) of FIG. 6, the other back wall opening 22 is covered with the detachable slide lid 23. That is, the two rear wall openings 22 and 22 have the same size so that the slide lid 23 can slide even if the slide lid 23 is inserted into any of the rear wall openings 22 and 22. For this reason, according to the position which exposes the wiring 4 from a wall surface, it can respond even if the concealing duct 3 exists in any of right and left. As a result, the power conditioner 10 can be attached to various positions on the wall surface.

  In the present embodiment, as shown in FIGS. 5 (d) and 5 (e), the lower casing 20 has a drain hole 25 formed at the bottom, and the periphery of the drain hole 25 is an inclined portion 26. Is formed. Thus, even if rainwater (liquid) enters the lower housing 20, the rainwater is discharged to the outside through the drain hole 25.

  Further, as shown in FIG. 5A, the upper surface opening 28 in the lower housing 20 is formed with a flange 24 on the back side. The flange 24 has a flange opening 24a (temporary fixing means) for passing a knurled screw 17 (temporary fixing means), which will be described later, when the lower housing 20 is attached to the main body bottom surface portion 11a of the main body 11. . The heel opening 24 a has a large opening at the front side of the heel portion 24 so that the knurled screw 17 can be inserted with a space, while the knurl so that the rear side of the heel portion 24 can fix the knurled screw 17. The opening is a little wider than the width of the screw 17.

  The concealing duct 3 is provided to conceal the wiring 4 exposed from a wall surface (not shown). That is, as shown in FIG. 4, the main body 11 is usually provided with various electric devices, connection terminals, and the like on the front side, and with a fan, a heat sink, and the like on the rear side. Therefore, the lower housing 20 is provided at the position of the front half on the lower side of the power conditioner 10. For this reason, there is a distance between a wall surface (not shown) and the back wall opening 22 of the lower housing 20, and the wiring 4 is exposed during this distance. Therefore, in the present embodiment, the concealment duct 3 is provided to conceal the wiring 4 exposed between a wall surface (not shown) and the back wall opening 22 of the lower housing 20.

  As shown in FIG. 4, the concealing duct 3 has a duct back surface opening 3 a on the back side, a duct front side opening 3 b on the front side, and a duct bottom surface opening 3 c on the bottom side. The duct back opening 3a and the duct front opening 3b are openings through which the wiring 4 passes. The duct bottom opening 3c is for facilitating the installation work of the wiring 4 in the concealing duct 3, and is covered with a duct cover 3d.

  Further, the duct bottom opening 3c is also for attaching a new concealment duct (not shown). By making the duct cover 3d detachable from the duct bottom opening 3c, the work of installing the wiring 4 passing through the new concealment duct in the concealment duct 3 or attaching the new concealment duct to the duct bottom opening 3c is performed. It becomes easy.

(How to attach the power conditioner to the wall)
A method for attaching the power conditioner 10 of this embodiment to the wall surface will be described with reference to FIG. FIG. 7 is a perspective view showing a procedure for attaching the power conditioner 10 to the wall surface.

  As shown in FIG. 7, when attaching the power conditioner 10 of this Embodiment to the wall surface which is not illustrated, the attachment base board 1 is first attached to the wall surface which is not illustrated with the screw 1a. In FIG. 7, only one screw 1a is shown, but actually, the screw 1a exists at a plurality of locations.

  After the attachment base plate 1 is attached to the wall surface, the concealing duct 3 is attached to the right end of the bent lower end plate 1b of the attachment base plate 1 with a screw 3e. Thereafter, the gap between the wall side edge and the wall surface not shown in the duct back opening 3a of the concealing duct 3 is caulked (sealed with a sealing material) from the outside.

  Next, the main body 11 of the power conditioner 10 is attached to the attachment base plate 1.

  When attaching the main body 11 to the mounting base plate 1, first, projecting portions 12, 12 provided on the upper side of the main body 11 so as to protrude from both the left and right side surfaces are hooked on hook portions 1 c, 1 c formed on the mounting base plate 1. . At this time, the main body bottom surface portion 11 a of the main body 11 is placed on the bent lower end plate 1 b of the mounting base plate 1. For this reason, the lower end plate 1b of the mounting base plate 1 is screwed with the screw 1d from below the main body 11 through the main body bottom surface portion 11a. Thereby, the main body 11 can be fixed to the mounting base plate 1.

  Next, in this state, wiring work (wiring connection work) is performed. Wiring work is performed with the front cover 13 of the main body 11 removed. The front cover 13 can be performed by removing the screw 13a. At the time of wiring work, a plurality of wirings 4 (not shown) that have passed through the duct back opening 3a of the concealing duct 3 from a wiring opening (not shown) formed on a wall surface (not shown) are formed as shown in FIG. Through a plurality of main body wiring holes 14 provided in 11a, it is connected to various connection terminals such as an input side switch 15 and an output side terminal block 16 provided in the main body 11.

  The wiring 4 from the concealing duct 3 to the main body 11 is preferably positioned higher than the bottom surface of the concealing duct 3. Thereby, the wiring 4 from the concealment duct 3 to the main body 11 can be reliably accommodated in the lower housing 20.

  After completing the wiring work, gap portions of the plurality of wirings 4 through the main body wiring holes 14 are putty filled (sealed with a sealing material). Thereby, invasion of insects or the like into the main body 11 can be prevented.

  Next, the lower housing 20 is attached to the main body bottom surface portion 11 a of the main body 11. Here, the lower housing rear wall 21 of the lower housing 20 has two rear wall openings 22 and 22 on the left and right as shown in FIGS. Is formed. For this reason, it is necessary to close the back wall opening 22 on the side where the concealing duct 3 does not exist. Therefore, as shown in FIGS. 6A and 6B, the rear wall opening 22 on the side where the concealing duct 3 does not exist is closed with a slide lid 23. In the present embodiment, when the power conditioner 10 is viewed from the front side, the concealing duct 3 is present on the right side, so the left-side rear wall opening 22 is closed.

  When the left rear wall opening 22 in the lower housing 20 is closed, as shown in FIG. 6A, the slide grooves 23a and 23a provided on both side ends of the slide lid 23 are provided on the rear surface of the lower housing. Insert the edge of the wall 21 into the back wall opening 22 and slide the slide lid 23 downward. Thereby, as shown in FIG. 6B, the left rear wall opening 22 in the lower housing 20 can be closed with the slide lid 23.

  Further, the projecting pieces 23 b and 23 b provided on both sides of the lower end of the slide lid 23 are fitted into positioning holes 29 and 29 provided on the bottom surface of the lower housing 20. As a result, the slide lid 23 is attached at a predetermined position and can be prevented from moving back and forth and from side to side, and the left rear wall opening 22 in the lower housing 20 can be reliably closed.

  As shown in FIG. 6A, the positioning holes 29 and 29 are provided not only in the vicinity of the left rear wall opening 22 but also in the vicinity of the right rear wall opening 22. The positioning holes 29 and 29 provided in the vicinity of the right back wall opening 22, that is, the positioning holes 29 and 29 provided in the vicinity of the back wall opening 22 not closed by the slide lid 23, are drain holes 25. Similarly, it functions to discharge rainwater and the like that have entered the lower housing 20 to the outside.

  Next, the lower housing 20 is attached to the main body bottom surface portion 11 a of the main body 11. 8A, 8 </ b> B, 8 </ b> C, and 8 </ b> D are cross-sectional views illustrating a procedure for attaching the lower housing 20 to the main body bottom surface portion 11 a of the main body 11.

  As shown in FIG. 8A, first, a knurled screw 17 is screwed into a knurled screw hole formed on the lower surface rear surface side of the main body bottom surface portion 11 a of the main body 11. Next, the lower housing 20 is lifted, and the knurled screw 17 is passed from the upper side through the flange opening 24a formed in the flange 24 of the lower housing 20, and as shown in FIG. The upper surface of 24 is brought into contact with the lower surface of the bottom surface portion 11 a of the main body 11.

  Next, as shown in FIG. 8C, the lower housing 20 is slid forward along the bottom surface portion 11a of the main body. As a result, as shown in FIG. 8 (d), the locking portion 27 (temporary locking means) of the lower housing 20 is inserted into the flange 11b provided on the bottom surface portion 11a of the main body 11 and locked. The Further, the knurled screw 17 is locked to the rear side of the heel opening 24a. As a result, the lower housing 20 is temporarily fixed (temporarily fixed) to the main body bottom surface portion 11 a of the main body 11.

  Next, as shown in FIG. 4, the lower housing 20 is fixed to the main body 11 with screws. In the present embodiment, the lower casing 20 has a rounded front corner, and front edge portions 30 and 30 are provided on the upper surface of the front corner. Further, the lower housing 20 is provided with back tube portions 31, 31 between the flange portion 24 and the back wall openings 22, 22. Then, the main body bottom surface portion 11a of the main body 11 is passed through the front edge portions 30 and 30 and the rear tube portions 31 and 31 of the lower housing 20 with four screws 32 (fixing means) from below the lower housing 20. Screw in (fix).

  Therefore, when the lower housing 20 is attached to the main body 11, since it is temporarily fixed and then fixed with screws, the work efficiency of the attachment is improved. Furthermore, the knurled screw 17, the flange opening 24a, and the locking portion 27 also function as positioning means for determining the position where the lower housing 20 is fixed to the main body 11, so that the mounting work efficiency is further improved.

  In the present embodiment, the back tube portions 31 and 31 are tapered and become narrower from the bottom surface toward the top surface. Thereby, it becomes easy to insert the screw 32 from the bottom surface of the back tube portion 31 to the top surface, and as a result, the working efficiency increases.

  Next, the gap between the duct back opening 3 a of the concealing duct 3 and the wall surface (not shown) is caulked from the inside of the concealing duct 3. Thereafter, the duct cover 3d is screwed to the duct bottom opening 3c of the concealing duct 3.

  As a result, as shown in FIG. 1B, the wiring 4 drawn into the main body 11 from the wall surface can be concealed. Finally, by attaching the front cover 13 to the main body 11, the installation work of the power conditioner 10 is completed.

(Modification)
FIG. 9 shows a configuration of a modification of the power conditioner, and is a front view showing a configuration of the power conditioner 10a attached to the wall surface and having the front cover 13 removed. FIG. 10 is an exploded perspective view showing the configuration of the lower casing 20a in the power conditioner 10a according to the modification, with the front side facing up.

  As shown in FIG. 9, in this modification, a conduit 40 that accommodates and protects one or a plurality of wires 4 can be attached to the body wiring hole 14 of the body 11. In addition, a conduit hole 33 (bottom opening) through which the conduit 40 from the outside passes is provided in the bottom surface portion of the lower housing 20a corresponding to the main body wiring hole 14.

  In this modification, a part of the wiring 4 is drawn into the main body 11 through the conduit 40, while the remaining wiring 4 passes from the wall surface through the rear wall opening 22, the upper surface opening 28, and the main body wiring hole 14. A case where the main body 11 is pulled in can also be handled. Accordingly, the wiring 4 can be concealed using the conduit 40 and the wiring 4 not using the conduit 40 can be concealed using the lower housing 20. A case where all the wires 4 are drawn into the main body 11 through the conduit 40 can also be handled.

  As shown in FIG. 10, in this modification, the lower housing 20 a can be separated forward and backward so as to cut the conduit hole 33. Specifically, the lower housing 20 a includes a lower housing front part 34 and a lower housing rear part 35. The lower housing front portion 34 includes a front concave portion 34 a that constitutes a part of each conduit hole 33, and the lower housing rear portion 35 includes a rear concave portion 35 a that constitutes the remainder of each conduit hole 33. ing.

  When the lower casing 20a having the above configuration is attached to the main body 11, first, the lower casing rear portion 35 is temporarily fixed as shown in FIGS. 8A, 8B, 8C, and 8D, and then 2 Screwed with two screws 32. Next, the conduit 40 connected to the main body wiring hole 14 is brought into contact with the rear concave portion 35 a of the lower housing rear portion 35. Next, the lower housing front part 34 is temporarily fixed as shown in FIGS. 8A, 8 </ b> B, 8 </ b> C, and 8 </ b> D, and then screwed with two screws 32. Therefore, even when the conduit 40 is connected to the main body wiring hole 14 of the main body 11, the lower casing 20 a including the lower casing front portion 34 and the lower casing rear portion 35 can be easily attached to the main body 11. Can do.

  The present disclosure is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the technical means disclosed in different embodiments can be appropriately combined. Embodiments to be included are also included in the technical scope of the present disclosure. Furthermore, a new technical feature can be formed by combining the technical means disclosed in each embodiment.

DESCRIPTION OF SYMBOLS 1 Mounting base plate 1b Bending lower end plate 1c Hook part 3 Concealed duct 3a Duc back opening 3b Duct front opening 3c Duct bottom opening 3d Duct cover 4 Wiring 10, 10a Power conditioner 11 Main body 11a Main body bottom part 11b Flange 12 Projection part 13 Front cover 14 Body wiring hole 15 Input side switch 16 Output side terminal block 17 Knurled screw (temporary fixing means)
20, 20a Lower housing 21 Lower housing rear wall 22 Rear wall opening (opening, rear opening)
23 Slide lid (occlusion member)
23a Slide groove 23b Projection piece 24 Hook 24a Hook opening (temporary fixing means)
25 Water drain hole 26 Inclined part 27 Locking part (temporary fixing means)
28 Upper surface opening (opening)
29 Positioning hole (water drain hole)
30 Front edge 31 Back tube 32 Screw (fixing means)
33 Conduit hole (bottom opening)
34 Lower housing front 34a Front recess 35 Lower housing rear 35a Rear recess 40 Conduit 50, 51 Grasping part

Claims (5)

A main body having an input side connection terminal to which wiring for inputting electric power is connected and an output side connection terminal to which wiring for outputting electric power is connected;
The main body is a power conditioner having a grip portion for transporting the main body on an upper surface. A main body having an input side connection terminal to which wiring for inputting electric power is connected and an output side connection terminal to which wiring for outputting electric power is connected;
A front cover attached to the front side of the main body,
A power conditioner having a shape in which the front side of the upper surface of the main body extends upward so as to face the upper portion of the front cover and further extends rearward. An input side connection terminal to which wiring for inputting power is connected and an output side connection terminal to which wiring for outputting power is connected are provided on the front side, and a main body having a heat sink on the rear side is provided.
The main body is a power conditioner having a grip portion on the front side of the upper surface. A main body having an input side connection terminal to which wiring for inputting electric power is connected and an output side connection terminal to which wiring for outputting electric power is connected;
The main body is a power conditioner provided with a space part into which an operator's finger can be inserted on the front side of the upper surface. A main body having an input side connection terminal to which wiring for inputting electric power is connected and an output side connection terminal to which wiring for outputting electric power is connected;
A front cover attached to the front side of the main body,
The front cover is attached to the main body with screws,
The front cover is a power conditioner having a grip portion on an upper portion thereof.

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