JP6929461B2 - Outdoor unit of air conditioner - Google Patents

Description

The present invention relates to an outdoor unit of an air conditioner, and more particularly to a fixed structure of an electronic circuit board arranged in a housing.

The outdoor unit of the air conditioner has an electronic circuit board installed in the housing. The electronic circuit board is equipped with electronic components, wiring patterns, heat sinks, and the like, and controls the operation of the blower and compressor of the outdoor unit of the air conditioner and processes electric signals. The electronic circuit board is supported by the board support member, and is fastened and fixed to the board support member by bolts or the like. (See Patent Document 1.)

JP-A-2007-132606

In the outdoor unit of the air conditioner disclosed in Patent Document 1, the electronic circuit board is fixed to the board support member by bolting. However, when the electronic circuit board is fastened and fixed to the substrate support member with bolts, thermal expansion and contraction of the electronic circuit board and the substrate support member occur when the temperature fluctuates, and stress is generated in the electronic circuit board due to the displacement difference. was there.

Further, the outdoor unit of the air conditioner may be subjected to an impact force due to vibration, dropping, collision, etc. during transportation or installation. In recent years, the functions of air conditioners have been added, and the electronic circuit boards mounted on the air conditioners tend to be large. As the electronic circuit board becomes larger, the weight of the electronic circuit board becomes heavier, and when the outdoor unit of the air conditioner receives an impact, the inertial force of the electronic circuit board becomes larger and the force applied to the fixed portion of the electronic circuit board also becomes larger. When the electronic circuit board is bolted, the fixed portion does not come off when the outdoor unit of the air conditioner receives an impact, but there is a problem that stress is generated in the electronic circuit board itself due to the impact. ..

Further, the electronic circuit board can be fixed not only by fastening with bolts disclosed in Patent Document 1, but also by engaging a claw with a board support member to fix the electronic circuit board. When the engagement with the claws is adopted, when the outdoor unit of the air conditioner receives an impact, the inertial force of the electronic circuit board due to the impact disengages the claws, and the electronic circuit board is disengaged from the substrate support member. There was a challenge.

The present invention has been made to solve the above problems, and even when the outdoor unit of the air conditioner receives an impact force, the electronic circuit board does not fall off from a predetermined position. It is an object of the present invention to provide an outdoor unit of an air conditioner that suppresses stress generated in an electronic circuit board due to deformation due to heat.

The outdoor unit of the air conditioner according to the present invention is an outdoor unit of an air conditioner including a heat exchanger, a compressor, and an electronic circuit board inside a housing, and a heat exchange blower in which the heat exchanger is arranged. The machine room includes a chamber and a machine room in which the compressor and the electronic circuit board are arranged. The machine room includes a board support member having a mounting surface on which the electronic circuit board is mounted, and the board support member. At one end of the region where the electronic circuit board is arranged, an engaging claw that restricts the movement of the electronic circuit board in the direction perpendicular to the mounting surface and the electronic circuit board along the mounting surface. A regulating protrusion for restricting movement in a certain direction and a boss portion for screwing a screw at the other end of a region where the electronic circuit board is arranged are provided, and the regulating protrusion is a substrate support member. It is provided so as to project from a part of the above to the tip of a flexible arm portion that protrudes in a direction along the mounting surface, and is inserted into a first positioning hole provided in the electronic circuit board. The tip has a protruding portion protruding from the mounting surface, and the protruding portion is inserted into a second positioning hole provided in the electronic circuit board.

According to the outdoor unit of the air conditioner according to the present invention, according to the above configuration, even when the outdoor unit of the air conditioner receives an impact force, the electronic circuit board can be moved horizontally by the first protrusion and the tip of the boss portion. In order to suppress the movement, the claws engaged with the electronic circuit board are suppressed from coming off, and the claws from falling off from the board support member are suppressed. Further, the amount of protrusion of the tip of the boss portion is larger than the thickness of the electronic circuit board, and the electronic circuit board arranged between the head of the screw screwed into the boss portion and the substrate support member is a substrate support member. It is positioned with a gap between the two. Therefore, even when the electronic circuit board and the substrate support member are expanded or contracted by receiving heat, the relative displacement of the electronic circuit board and the substrate support member due to the expansion or contraction can be absorbed by the gap, so that the electronic circuit board can be absorbed. Suppresses the stress generated in.

It is a perspective view of the outdoor unit of the air conditioner which concerns on Embodiment 1. FIG. It is an exploded perspective view explaining the internal structure of the outdoor unit of the air conditioner of FIG. It is a front view explaining the internal structure of the outdoor unit of the air conditioner of FIG. It is an exploded perspective view of the electric component box which concerns on Embodiment 1. FIG. It is an exploded perspective view explaining the fixing structure of the electronic circuit board of FIG. 4 and a substrate support member. It is a figure which looked at the state which fixed the electronic circuit board of FIG. 4 to a substrate support member from the lower side. It is the figure which looked at the substrate support member from the lower side. It is an enlarged view around the screw pilot hole of the substrate support member of FIG. It is an enlarged view of the periphery of the protrusion of the substrate support member. It is an enlarged view which shows the state which the electronic circuit board is mounted on the mounting surface of the peripheral part of the protrusion of FIG. It is a perspective view which shows the periphery of the engaging claw of a substrate support member. It is explanatory drawing which shows the cross-sectional structure of the engaging claw shown in FIG. It is a peripheral enlarged view of the regulation protrusion of the substrate support member shown in FIG. It is explanatory drawing of the state in which the 1st positioning hole of an electronic circuit board is fitted in the regulation protrusion shown in FIG. It is explanatory drawing of the attachment work to the substrate support member of the electronic circuit board which concerns on Embodiment 1. FIG.

Embodiment 1.
An embodiment of the outdoor unit 100 of the air conditioner will be described below. The form of the drawings is an example, and does not limit the present invention. In addition, those having the same reference numerals in the respective figures are the same or equivalent thereof, which are common to the entire text of the specification. Further, in the drawings below, the relationship between the sizes of the constituent members may differ from the actual one. In the following description, the directions represented by top, bottom, left, and right mean the directions when viewed toward the front panel 1 of the outdoor unit 100 of the air conditioner.

<Overall configuration of outdoor unit 100>
FIG. 1 is a perspective view of the outdoor unit 100 of the air conditioner according to the first embodiment. The housing 10 of the outdoor unit 100 of the air conditioner includes a front panel 1, a side panel 2, a top panel 3, a fan 5, and a fan guard 6. The front panel 1 is provided with an opening, and a fan 5 is arranged inside the housing behind the opening. The opening is covered with a fan guard 6 so that the fan 5 inside the housing 10 cannot be easily touched from the outside.

FIG. 2 is an exploded perspective view illustrating the internal structure of the outdoor unit 100 of the air conditioner of FIG. 1. FIG. 3 is a front view illustrating the internal structure of the outdoor unit 100 of the air conditioner of FIG. 2 and 3 show a state in which the front panel 1, the side panel 2, and the top panel 3 are removed from the housing 10. The inside of the housing 10 is divided into a heat exchange blower chamber 8 and a machine chamber 9. A fan 5 and a heat exchanger 60 are arranged in the heat exchange blower chamber 8. In the machine room 9, the compressor 11 and the refrigerant pipe 12 are arranged, and the electric component box 13 is arranged above the compressor 11. The heat exchange blower chamber 8 and the machine chamber 9 are partitioned by a partition plate 7 that stands upward from the base 4 that forms the bottom of the housing 10. The electrical component box 13 is arranged immediately above the upper end of the partition plate 7.

The outdoor unit 100 of the air conditioner having an inverter drive circuit includes an electronic circuit board 14 on which an electronic circuit composed of electronic components such as a transistor and a diode for controlling a fan 5, a compressor 11, and the like is mounted. The electronic circuit board 14 is housed in the electrical component box 13. The temperature of the electronic circuit board 14 rises due to heat generation of electronic components such as transistors and diodes while the outdoor unit 100 of the air conditioner is in operation. Therefore, the electronic circuit board 14 is connected to the heat sink 15 for heat dissipation cooling. The electrical component box 13 is arranged so that the portion where the heat sink 15 is arranged comes into contact with the air in the heat exchange air blower chamber 8. That is, the electric component box 13 is arranged so as to project a portion where the heat sink 15 is attached from the machine room 9 to the heat exchange air blowing chamber 8 side.

FIG. 4 is an exploded perspective view of the electrical component box 13 according to the first embodiment. The electronic circuit board 14 is attached to the lower surface of a resin board support member 16 such as ABS. The heat sink 15 is placed on the electronic circuit board 14 from below the electronic circuit board 14. The heat sink 15 is supported by a heat sink support 17 made of sheet metal, and is arranged so as to come into contact with the surface of the electronic circuit board 14 or an electronic component on the electronic circuit board 14. The heat sink support 17 is fixed to the substrate support member 16. Then, when the electric component box 13 is arranged on the upper end of the partition plate 7, the heat sink support 17 is fixed to the upper end of the partition plate 7, and the entire electric component box 13 is fixed.

The heat sink support 17 is provided with an opening 17a, and the heat sink 15 is fitted and fixed to the opening 17a. As a result, the heat sink 15 protrudes from the electrical component box 13 and is exposed, and comes into contact with the wind flowing through the heat exchange blower chamber 8. A heat sink holder 19 made of an insulating resin such as ABS is arranged between the heat sink 15 and the heat sink support 17. Since the heat sink support 17 is made of metal, the heat sink holder 19 electrically insulates the heat sink 15 from the heat sink support 17. Further, an air guide 18 is fixed to the heat sink support 17. The air guide 18 is for guiding the air flowing in the heat exchange air blowing chamber 8 and efficiently contacting the heat sink 15. In the first embodiment, the air guide 18 is a resin component, but the air guide 18 is not limited to the resin material.

A sheet metal electric product box cover 20 is provided on the upper portion of the electric product box 13. The electrical component box cover 20 is attached to the upper surface of the substrate support member 16. The electrical box cover 20 prevents the electronic circuit board 14 from getting wet due to moisture generated inside the housing 10 such as dew condensation and causing an electrical short circuit, and at the same time, a flame is emitted from the electronic circuit board 14 when a fire occurs. It suppresses the spread of fire to a part.

A terminal block support member 21 is attached to the end of the board support member 16. The terminal block support member 21 is fixed to the side end portion of the housing 10 in the substrate support member 16. The terminal block 22 is mounted on the terminal block support member 21. The terminal block 22 supplies power to the electronic circuit board 14. The terminal block support member 21 and the substrate support member 16 are fixed by fastening screws, for example. However, the method of fixing the terminal block support member 21 and the substrate support member 16 is not limited to this.

FIG. 5 is an exploded perspective view illustrating a fixed structure of the electronic circuit board 14 and the substrate support member 16 of FIG. FIG. 6 is a view of the state in which the electronic circuit board 14 of FIG. 4 is fixed to the board support member 16 as viewed from below. FIG. 7 is a view of the substrate support member 16 as viewed from below. The substrate support member 16 has a support structure for holding an end portion of the electronic circuit board 14. The substrate support member 16 has a structure in which two corners 35 and 36 of one end 31 in a direction orthogonal to the longitudinal direction of the electronic circuit board 14 formed in a rectangular shape when viewed from the lower surface side are fixed by screws. I have. That is, the screw 23 is passed through the screw hole 41 formed in the corner portion 35 located at the end of one end portion 31 of the electronic circuit board 14, and the screw 23 is screwed into the screw pilot hole 61 formed in the substrate support member 16. It has a structure for fastening and fixing the electronic circuit board 14 by combining them. Further, after inserting the protruding portion 16c formed in the substrate support member 16 into the second positioning hole 40 formed in the second corner portion 36 located at the end of one end portion 31, the protruding portion 16c is inserted into the protruding portion 16c. A structure is provided in which a screw 23 is screwed into a formed screw pilot hole 62 to support an electronic circuit board 14.

Further, the substrate support member 16 includes an engaging claw 16d that supports the other end portion 32 in the direction orthogonal to the longitudinal direction of the electronic circuit board 14 so as not to be separated from the substrate support member 16. The engaging claw 16d supports the electronic circuit board 14 from below.

FIG. 8 is an enlarged view of the vicinity of the screw pilot hole 61 of the substrate support member 16 of FIG. The board support member 16 includes a mounting surface 50 facing the electronic circuit board 14, and a screw pilot hole 61 is opened in the mounting surface 50. The portion of the board support member 16 provided with the screw pilot hole 61 is a screw boss 16a into which the screw 23 is screwed. The electronic circuit board 14 is placed on the mounting surface 50, the screw 23 is screwed into the screw pilot hole 61, and the electronic circuit board 14 is fastened and fixed on the mounting surface 50.

FIG. 9 is an enlarged view of the periphery of the protruding portion 16c of the substrate support member 16. A boss portion 16b is formed on the substrate support member 16 corresponding to the second corner portion 36 of the electronic circuit board 14, and the screw 23 is screwed into the substrate support member 16. A protruding portion 16c is formed at the tip of the boss portion 16b. The protruding portion 16c protrudes from the mounting surface 50 and is formed in a cylindrical shape.

FIG. 10 is an enlarged view showing a state in which the electronic circuit board 14 is placed on the mounting surface 50 of the peripheral portion of the protruding portion 16c of FIG. The protruding portion 16c of the substrate support member 16 is inserted into the second positioning hole 40 formed in the second corner portion 36 of the electronic circuit board 14. The second positioning hole 40 of the electronic circuit board 14 is fitted with a gap in the radial direction with respect to the protruding portion 16c of the board support member 16. The protrusion 16c of the board support member 16 has a protrusion amount h from the mounting surface 50 larger than the thickness t of the electronic circuit board 14. In the state shown in FIG. 10, the screw 23 is tightened into the screw pilot hole 62 of the boss portion 16b. When the screw 23 is tightened, a gap h is created between the head of the screw 23 and the mounting surface 50. On the other hand, the electronic circuit board 14 has a thickness t. In the first embodiment, since the relationship of h> t is satisfied, the electronic circuit board 14 is arranged with a gap of ht between the mounting surface 50 and the head of the screw 23. Therefore, even if the electronic circuit board 14 and the board support member 16 are thermally expanded or contracted due to the temperature of the surrounding environment and are relatively displaced, the electronic circuit board 14 is formed between the mounting surface 50 and the head of the screw 23. There is a margin in the direction perpendicular to the mounting surface 50 between them, and stress is not generated due to thermal deformation. In the first embodiment, the direction perpendicular to the mounting surface 50 means the vertical direction of the outdoor unit 100 of the air conditioner.

Further, the second positioning hole 40 of the electronic circuit board 14 and the protruding portion 16c are also fitted with a gap. Therefore, the electronic circuit board 14 is positioned on the substrate support member 16 in the direction along the mounting surface 50, and stress is not generated even if the electronic circuit board 14 and the substrate support member 16 undergo thermal deformation. ..

FIG. 11 is a perspective view showing the periphery of the engaging claw 16d of the substrate support member 16. FIG. 12 is an explanatory view showing a cross-sectional structure of the engaging claw 16d shown in FIG. The other end portion 32 of the electronic circuit board 14 is supported by being sandwiched between the engaging claws 16d and the protrusions 16h formed so as to project toward the inward facing surface of the wall portion 16i around the substrate support member 16. The engaging claws 16d formed on the substrate support member 16 are formed at a plurality of positions along the other end 32 of the electronic circuit board 14, and cover the other end 32 of the electronic circuit board 14 in substantially the entire longitudinal direction. Support over. When the electronic circuit board 14 is installed inside the housing 10 of the outdoor unit 100 of the air conditioner, the upper surface of the board support member 16 in FIG. 11 is arranged so as to face downward. 16d will support the lower side of the electronic circuit board 14. In FIG. 11, the engaging claws 16d are provided at seven locations, but the present invention is not limited to these. The location where the engaging claw 16d is provided can be appropriately changed depending on the wiring formed on the electronic circuit board 14, the arrangement of the electronic components mounted on the electronic circuit board 14, and the like.

As shown in FIG. 12, the electronic circuit board 14 is sandwiched between the engaging claw 16d and the protrusion 16h. The protrusion 16h supports the electronic circuit board 14 from the lower side in FIG. 12 when the electronic circuit board 14 is attached to the board support member 16. As a result, the electronic circuit board 14 can be stably supported by the board support member 16 during the assembly work, so that excessive stress is generated when the electronic circuit board 14 receives a load, for example, during the screw fastening work. It is configured not to. Further, in FIG. 12, the gap h2 between the lower surface of the engaging claw 16d and the upper surface of the protrusion 16h is larger than the thickness t of the electronic circuit board 14. Therefore, the electronic circuit board 14 does not generate stress due to thermal deformation of the electronic circuit board 14 and the substrate support member 16.

FIG. 13 is an enlarged peripheral view of the regulation protrusion 16g of the substrate support member 16 shown in FIG. As shown in FIG. 13, the substrate support member 16 is provided with a regulation protrusion 16g at a position corresponding to a first corner 38 located at the end of the other end 32 of the electronic circuit board 14. The regulation protrusion 16g is formed so as to protrude upward in FIG. 13 at the tip of the arm portion 16f formed so as to protrude from the wall portion 16i. The regulating protrusion 16g and the arm portion 16f are collectively referred to as a regulating protrusion 16e. The regulation protrusion 16e is formed corresponding to the first corner 38 of the electronic circuit board 14 of the board support member 16. The regulation protrusion 16g is inserted into the first positioning hole 42 formed in the first corner portion 38 of the electronic circuit board 14.

FIG. 14 is an explanatory view of a state in which the first positioning hole 42 of the electronic circuit board 14 is fitted to the regulation protrusion 16g shown in FIG. The regulation protrusion 16g is formed so that the outer peripheral surface becomes thinner from the arm portion 16f side to the tip end. In the first embodiment, the regulation protrusion 16g has a truncated cone shape, but is not limited thereto. For example, the regulation protrusion 16g may have a hemispherical shape or a shape in which the ridgeline at the upper end of the cylinder is rounded. The regulating protrusion 16e is configured such that the arm portion 16f bends in the vertical direction shown in FIG. In the first embodiment, the length of the arm portion 16f is set to 20 mm and the height of the regulation protrusion 16g is set to 5 mm, but the height is appropriately changed depending on the material constituting the substrate support member 16 and the thickness of the electronic circuit board 14. can do.

As shown in FIG. 14, by fitting the regulation protrusion 16g into the first positioning hole 42 of the electronic circuit board 14, the electronic circuit board 14 is positioned in the direction along the mounting surface 50 with respect to the board support member 16. Be regulated. As a result, when the outdoor unit 100 of the air conditioner receives an impact, at least one of the electronic circuit board 14 and the board support member 16 is bent and deformed, and the other end 32 of the electronic circuit board 14 supports the board. It regulates the member 16 from being displaced in the direction away from the engaging claw 16d. Therefore, when the outdoor unit 100 of the air conditioner is impacted, it is possible to prevent the other end 32 of the electronic circuit board 14 from falling off from the engaging claw 16d of the board support member 16.

(Method of mounting the electronic circuit board 14 to the board support member 16)
FIG. 15 is an explanatory diagram of the work of attaching the electronic circuit board 14 to the board support member 16 according to the first embodiment. FIG. 15 is a diagram schematically illustrating, a first positioning hole 42 and a second positioning hole 40 provided in the electronic circuit board 14, and a regulation protrusion 16e and a protrusion provided in the board support member 16. The portion 16c, the engaging claw 16d, and the protrusion 16h are shown in one figure. Further, FIG. 15 also shows the engaging claws 16d and the protrusions 16h arranged on the back side with respect to the regulation protrusions 16e provided on the wall portion 16i of the substrate support member 16.

When the electronic circuit board 14 is attached to the substrate support member 16, first, the other end 32 side of the electronic circuit board 14 is inserted into the gap between the engaging claw 16d and the protrusion 16h of the substrate support member 16. In order to insert the other end portion 32 of the electronic circuit board 14 between the engaging claw 16d and the protrusion 16h, it is necessary to move the electronic circuit board 14 in a direction parallel to the mounting surface 50 and insert the electronic circuit board 14. At this time, since the board support member 16 has a protruding portion 16c and a regulating protrusion 16g protruding in a direction perpendicular to the mounting surface 50, the electronic circuit board 14 is parallel to the mounting surface 50 and the engaging claws are engaged. The other end 32 cannot be inserted into the 16d and the protrusion 16h. Therefore, the electronic circuit board 14 is inserted at an angle as shown in FIG. 15 (a). In the first embodiment, since the engaging claw 16d is provided with a chamfer 16k at the tip, it is easy to insert the electronic circuit board 14 diagonally as shown in FIG. 15A. .. Further, since the engaging claw 16d has a flat portion on the back side, the electronic circuit board 14 is held at a predetermined position after the other end 32 of the electronic circuit board 14 is inserted all the way. It is configured as follows.

As shown in FIG. 15A, the regulation protrusion 16g is in a position where it cannot enter the first positioning hole 42 even when the electronic circuit board 14 is inserted at an angle. However, since the regulation protrusion 16g is provided at the tip of the arm portion 16f that protrudes from the wall portion 16i in the direction along the mounting surface 50 and has flexibility, it can move in the vertical direction. Therefore, the electronic circuit board 14 can insert the other end portion 32 of the electronic circuit board 14 between the engaging claw 16d and the protrusion 16h while retracting the regulation protrusion 16g below FIG. 15A. It has become. The arm portion 16f protrudes from the wall portion 16i in the direction along the mounting surface 50, but the present invention is not limited to this form, and the electronic circuit board 14 is placed between the engaging claw 16d and the protrusion 16h. It suffices if the regulation protrusion 16g is retracted when it is inserted into the. As shown in FIG. 15B, when the electronic circuit board 14 is housed in the regular position of the board support member 16, the regulation protrusion 16g is in a state of being inserted into the first positioning hole 42, and the electronic circuit board is in a state of being inserted into the first positioning hole 42. It functions as positioning in a direction parallel to the mounting surface 50 of 14. In the electronic circuit board 14, the corner portion 35 and the second corner portion 36 are fixed by screws 23 in the state shown in FIG. 15 (b).

(Effect of Embodiment 1)
According to the outdoor unit 100 of the air conditioner according to the first embodiment, the substrate support member 16 moves the electronic circuit board downward to one end 16 m of the arrangement region 16p of the electronic circuit board 14. It is provided with an engaging claw 16d that regulates. Further, the substrate support member 16 includes a regulation protrusion 16g that restricts the movement of the electronic circuit board 14 in the horizontal direction, and a screw 23 is screwed into the other end 16m of the arrangement region 16p of the electronic circuit board 14. A boss portion 16b is provided. The regulation protrusion 16g is provided so as to project vertically from the mounting surface 50 from the tip of the flexible arm portion 16f protruding from a part of the board support member 16 in the direction along the mounting surface 50, and is provided as an electronic circuit board. It is inserted into the first positioning hole 42 provided in 14. The boss portion 16b has a protruding portion 16c protruding downward at the tip thereof, and the protruding portion 16c is inserted into a second positioning hole 40 provided in the electronic circuit board 14. The protrusion amount h1 of the protrusion 16c from the mounting surface 50 is larger than the thickness t of the electronic circuit board 14.

With the above configuration, the electronic circuit board 14 is supported in the vertical direction in the outdoor unit 100 of the air conditioner by the head of the screw 23 screwed into the engaging claw 16d and the boss portion 16b. The electronic circuit board 14 is restricted from moving in the direction along the mounting surface 50 of the outdoor unit 100 of the air conditioner by the regulating protrusions 16g and the protruding portions 16c. Therefore, even when the outdoor unit 100 of the air conditioner receives an impact force, the electronic circuit board 14 is prevented from moving in the direction along the mounting surface 50 by the regulating protrusion 16g and the protruding portion 16c provided at the tip of the boss portion 16b. Can be suppressed. Therefore, it is possible to prevent the engaging claw 16d engaged with the electronic circuit board 14 from being disengaged from the electronic circuit board 14.

Further, the protruding amount h1 of the protruding portion 16c at the tip of the boss portion 16b is larger than the thickness of the electronic circuit board 14. The electronic circuit board 14 arranged between the head of the screw 23 screwed into the boss portion 16b and the mounting surface 50 of the board supporting member 16 has a gap between the board supporting member 16 and is perpendicular to the mounting surface 50. Positioned in the direction. Therefore, even when the electronic circuit board 14 and the substrate support member 16 receive heat and expand or contract, the relative displacement of the electronic circuit board 14 and the substrate support member 16 due to the expansion or contraction can be absorbed by the gap. , No stress is generated on the electronic circuit board 14.

Between the first positioning hole 42 provided on the electronic circuit board 14 and the regulation protrusion 16g provided on the board support member 16, and between the second positioning hole 40 and the protrusion 16c provided on the electronic circuit board 14. A predetermined gap is provided between the outer peripheral surface and the outer peripheral surface. Therefore, when the electronic circuit board 14 and the board support member 16 receive heat and expand or contract, the electronic circuit board 14 can absorb the displacement in the direction along the mounting surface 50 by the gap, so that the electronic circuit board 14 can absorb the displacement. Does not generate stress.

The electronic circuit board 14 is fastened and fixed by screws 23 at the corners 35. In the electronic circuit board 14, only the corners 35 are fixed in the direction perpendicular to the mounting surface 50 and in the direction along the mounting surface 50, and the others have a predetermined gap in the direction perpendicular to the mounting surface 50 and in the mounting surface 50. It is positioned along the direction. Therefore, the electronic circuit board 14 does not rattle on the substrate support member 16, and does not vibrate on the substrate support member 16 due to vibration or impact applied to the outdoor unit 100 of the air conditioner.

In the first embodiment, the regulation protrusions 16g and the protrusions 16c provided on the substrate support member 16 are located diagonally to the electronic circuit board 14. Therefore, there is little rattling in the direction along the mounting surface 50. However, the positional relationship between the regulation protrusion 16g and the protrusion 16c is not limited to that shown in the first embodiment, and can be appropriately changed depending on the wiring of the electronic circuit board 14 and the arrangement of the electronic components. However, the regulation protrusion 16g needs to be arranged on the side where the engaging claw 16d is arranged. Since the regulation protrusion 16g can be displaced in the direction perpendicular to the mounting surface 50, the electronic circuit board 14 can be easily assembled and the electronic circuit board 14 is not damaged.

1 Front panel, 2 Side panel, 3 Top panel, 4 Base, 5 Fan, 6 Fan guard, 7 Partition plate, 8 Heat exchange air chamber, 9 Machine room, 10 housing, 11 Compressor, 12 Coolant piping, 13 Electrical parts box, 14 Electronic circuit board, 15 Heat exchange, 16 Board support member, 16a screw boss, 16b boss part, 16c protrusion, 16d engaging claw, 16e regulation protrusion, 16f arm, 16g regulation protrusion, 16h protrusion , 16i wall, 16k chamfer, 16m end, 16p placement area, 17 heat sink support, 17a opening, 18 air guide, 19 heat sink holder, 20 electrical box cover, 21 terminal block support member, 22 terminal block, 23 Screws, 31 ends, 32 ends, 35 corners, 36 (second) corners, 38 first corners, 40 second positioning holes, 41 screw holes, 42 first positioning holes, 50 mountings Surface, 60 heat exchanger, 61 screw pilot hole, 62 screw pilot hole, 100 outdoor unit, h1 protrusion amount, h2 gap.

Claims (6)

In the outdoor unit of an air conditioner equipped with a heat exchanger, a compressor, and an electronic circuit board inside the housing.
A heat exchange air chamber in which the heat exchanger is arranged and
A machine room in which the compressor and the electronic circuit board are arranged is provided.
The machine room
A board support member having a mounting surface on which the electronic circuit board is mounted is provided on the upper portion.
The substrate support member is
At one end of the region where the electronic circuit board is arranged, an engaging claw that regulates the movement of the electronic circuit board in the vertical direction of the mounting surface and a direction in which the electronic circuit board is along the mounting surface. With regulatory protrusions that regulate movement to
At the other end of the area where the electronic circuit board is arranged, a boss portion through which a screw is screwed is provided.
The regulation protrusion
It is provided so as to project from a part of the substrate support member to the tip of a flexible arm portion protruding in a direction along the mounting surface, and is inserted into a first positioning hole provided in the electronic circuit substrate.
The boss part
The tip has a protruding portion protruding from the mounting surface, and has a protruding portion.
The protrusion
An outdoor unit of an air conditioner inserted into a second positioning hole provided in the electronic circuit board. The amount of protrusion of the protrusion from the mounting surface is
The outdoor unit of the air conditioner according to claim 1, which is larger than the thickness of the electronic circuit board. The substrate support member is
Further provided with screw pilot holes on the mounting surface,
The electronic circuit board is
The outdoor unit of the air conditioner according to claim 1 or 2, which is fastened and fixed to the mounting surface by a screw screwed into the screw pilot hole. The screw pilot hole
The outdoor unit of the air conditioner according to claim 3, which is formed at a position corresponding to the other end of the electronic circuit board. The engaging claw
Protruding in the direction along the mounting surface from the one end of the region where the electronic circuit board is arranged toward the other end.
The outdoor unit of the air conditioner according to any one of claims 1 to 4, which is formed so as to project from a wall portion erected on the substrate support member. The first positioning hole is
Formed at the first corner of the electronic circuit board,
The second positioning hole is
The outdoor unit of the air conditioner according to any one of claims 1 to 5, which is formed in the second corner portion diagonally to the first corner portion.

Images