JP5397259B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner having a metal plate covered with a coating film.

  The air conditioner is provided with an indoor unit that is installed indoors and an outdoor unit that is installed outdoors, and the outdoor unit generally has a housing that accommodates a compressor and the like. This casing is composed of a top plate, a side plate and a bottom plate each covered with a coating film, and these members are often in a grounded state. Some outdoor units have a top plate fixed to a side plate by a fixing screw. In this outdoor unit, the top plate is grounded by electrically connecting the top plate to the side plate via a fixing screw while the side plate is grounded.

  In this way, as a fixing screw for electrically connecting the top plate to the side plate, the coating film on the side plate is shaved by screwing into the screw hole of the side plate from the top plate side with the top plate overlapped with the side plate. Some of them contact with the metal plate of the side plate, and at that time, the protrusion formed on the lower surface of the screw head scrapes the coating film of the top plate and contacts the metal plate of the top plate.

Japanese Utility Model Publication No. 61-79465

  In this outdoor unit, when it is confirmed whether the top plate or the side plate is grounded, it may be determined depending on whether the fixing screw for fixing the top plate and the side plate is grounded. Here, the fixing screw is in contact with the metal plate of the side plate by scraping the coating film of the side plate by screwing into the screw hole of the side plate, but after fixing the top plate and the side plate, the head of the fixing screw It is conceivable that the protrusion formed on the portion does not contact the metal plate of the top plate. If the side plate is grounded, the fixing screw is grounded. Therefore, even if the fixing screw is grounded, the top plate is not necessarily grounded. . Therefore, there is a problem that it cannot be sufficiently confirmed that the top plate or the side plate is grounded only by whether or not the fixing screw is grounded. Therefore, in order to ensure the insulation of the top plate, an insulating member is arranged on the inner peripheral surface of the top plate or the wiring is fixed so that the wiring connected to the electrical components in the outdoor unit does not contact the top plate. Countermeasures are required.

  Accordingly, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide an air conditioner that can reliably check the grounding state of a metal plate covered with a coating film. And

  An air conditioner according to a first aspect of the present invention includes a first member having a first metal plate covered with a first coating film, a region overlapping the first member, and a first member covered with a second coating film. A second member having two metal plates, a fixing member that fixes the first member and the second member in a state of being overlapped in the region of the second member, and a portion of the second member other than the region A grounding confirmation member fixed to the second member at the time of fixing the first member and the second member by shaving the first coating film when the first member and the second member are fixed. While contacting with a metal plate, when the said earthing | grounding confirmation member is fixed to a said 2nd member, the said 2nd coating film is shaved and it contacts with the said 2nd metal plate, It is characterized by the above-mentioned.

  In this air conditioner, the grounding confirmation member provided separately from the fixing member that fixes the first member and the second member contacts the second member by scraping the second coating film. By using and determining the grounding state of the second member, the grounding state of the second member can be reliably confirmed. Moreover, in order to ensure the insulation of the second member, an insulating member is arranged on the inner peripheral surface of the second member or the wiring is fixed so that the wiring connected to the electrical component does not contact the second member. No countermeasure is required.

  An air conditioner according to a second invention is the air conditioner according to the first invention, wherein the fixing member scrapes the second coating film when fixing the first member and the second member. In contact with the second metal plate.

  In this air conditioner, the first member and the second member can be electrically connected via a fixing member.

  An air conditioner according to a third invention is the air conditioner according to the first or second invention, wherein the fixing member and the grounding confirmation member are screw members, and the fixing member is the second From the member side, the first member and the second member are passed through the second hole formed in the second member and screwed into the first hole formed in the first member. The grounding confirmation member is fixed to the second member by being screwed into a third hole formed in the second member. .

  In this air conditioner, the grounding state of the first member and the second member can be reliably confirmed with a simple configuration by using the screw member as the fixing member and the grounding confirmation member.

  An air conditioner according to a fourth aspect of the present invention is the air conditioner according to the third aspect of the present invention, wherein the second hole is configured to be larger than the first hole.

  In this air conditioner, since the fixing member is securely screwed into the first hole portion, the fixing member reliably contacts the first member, so that the grounding state of the first member is reliably confirmed using the fixing member. be able to.

  An air conditioner according to a fifth invention is the air conditioner according to any one of the first to fourth inventions, wherein the first member has a notch, and the grounding confirmation member is The second member is fixed at a position corresponding to the notch.

  In this air conditioner, it is possible to secure a range in which the grounding confirmation member is attached only by providing a cutout in the first member.

  An air conditioner according to a sixth invention is the air conditioner according to the fifth invention, wherein the first member has a bent part, and the notch is formed in the bent part. It is characterized by being.

  In this air conditioner, the grounding confirmation member can be attached using a notch provided when the bent portion of the first member is formed.

  An air conditioner according to a seventh invention is the air conditioner according to any one of the first to sixth inventions, and is an outdoor unit having a housing, wherein the first member is disposed on a side surface of the housing. It is a side plate arrange | positioned, The said 2nd member is a top plate arrange | positioned above the said side plate on the upper surface of the said housing, It is characterized by the above-mentioned.

  In this air conditioner, the grounding state of the top plate of the outdoor unit can be reliably confirmed.

  An air conditioner according to an eighth invention is the air conditioner according to the seventh invention, wherein a grounded grounding member is provided on one side of the housing, and the grounding confirmation member is The housing is fixed to the second member on one side surface where the grounding member is provided.

  In this air conditioner, the grounding confirmation member is attached in the vicinity of the grounded grounding portion, so that the work of confirming the grounding state of the second member can be easily performed.

  As described above, according to the present invention, the following effects can be obtained.

  In the first invention, since the grounding confirmation member provided separately from the fixing member that fixes the first member and the second member contacts the second member by scraping the second coating film, the grounding confirmation member is By using and determining the grounding state of the second member, the grounding state of the second member can be reliably confirmed. Moreover, in order to ensure the insulation of the second member, an insulating member is arranged on the inner peripheral surface of the second member or the wiring is fixed so that the wiring connected to the electrical component does not contact the second member. No countermeasure is required.

  In the second invention, the first member and the second member can be electrically connected via the fixing member.

  In 3rd invention, the grounding state of a 1st member and a 2nd member can be reliably confirmed with a simple structure by using a screw member as a fixing member and a member for grounding confirmation.

  In the fourth aspect of the invention, since the fixing member is reliably brought into contact with the first member by being screwed into the first hole portion, the grounding state of the first member is reliably confirmed using the fixing member. be able to.

  In 5th invention, the range which attaches the member for grounding confirmation can be ensured only by providing a notch in the 1st member.

  In 6th invention, the member for grounding confirmation can be attached using the notch provided when forming the bending part of a 1st member.

  In 7th invention, the grounding state of the top plate of an outdoor unit can be confirmed reliably.

  In the eighth invention, since the grounding confirmation member is attached in the vicinity of the grounded portion that is grounded, the work of confirming the grounding state of the second member can be easily performed.

It is a figure which shows the whole air conditioning system provided with the outdoor unit which concerns on this embodiment. It is an external appearance perspective view of the outdoor unit of FIG. It is a disassembled perspective view of the outdoor unit of FIG. It is a schematic diagram of the AA arrow directional cross section of FIG.

  Hereinafter, an embodiment of an air conditioner according to the present invention will be described based on the drawings.

(Embodiment)
[Configuration of Air Conditioning System 1]
Drawing 1 is a figure showing the whole air harmony system provided with the outdoor unit concerning this embodiment. The air conditioning system 1 includes an indoor unit 2 attached to an indoor wall surface and the like, and an outdoor unit 3 installed outside the room. The indoor unit 2 and the outdoor unit 3 are connected by a refrigerant pipe 4.

[Configuration of outdoor unit 3]
FIG. 2 is an external perspective view seen from the back side of the outdoor unit 3, and FIG. 3 is an exploded perspective view of the outdoor unit 3. 4 is a schematic diagram of a cross section taken along line AA in FIG.

  The outdoor unit 3 includes a housing 5 that houses a compressor, an outdoor heat exchanger, an outdoor fan, and the like (all not shown) that form a refrigerant circuit. As shown in FIG. 3, the housing 5 includes a side plate 6 that forms the side surface of the housing 5, a top plate 7 that forms the top surface of the housing 5, and a bottom plate 8 that forms the bottom surface.

[Configuration of Side Plate 6]
The side plate 6 includes a metal plate 60 and an insulating coating film 15 disposed so as to cover the surface of the metal plate 60 to prevent corrosion or the like (see FIG. 4). As shown in FIG. 3, the side plate 6 has four side surfaces 61 a to 61 d arranged so as to surround the entire circumference of the side surface of the housing 5.

  The side plate 6 is a single plate-like member, and four side surfaces 61a to 61d are formed by bending it at four locations. Therefore, in the side plate 6, between the right side surface 61a and the back side surface 61d, between the back side surface 61d and the left side surface 61b, between the left side surface 61b and the front side surface 61c, and between the front side surface 61c and the right side surface 61a. In the middle, bent portions 62a to 62d are formed, respectively.

  In addition, standing portions 63a to 63d are provided at upper ends of the right side surface 61a, the left side surface 61b, the front side surface 61c, and the back side surface 61d, respectively. The standing portions 63a to 63d are portions to which the top plate 7 is attached. In addition, notches 65a to 65d are provided between the standing portions 63a to 63d in order to prevent the adjacent standing portions from interfering when the side plate is bent and formed.

  In addition, first fastening holes 64a and 64b used for fixing the top plate 7 to the side plate 6 are provided at the substantially central portions of the standing portion 63a of the right side surface 61a and the standing portion 63b of the left side surface 61b. It has been.

On the right side surface 61 a of the outdoor unit 3, a terminal block to which electric wiring is attached and a pipe connection part for connecting the refrigerant pipe 4 are provided. The right side surface 61 a is provided with a ground terminal 10 that is grounded via the ground wire 11. A cover 9 is attached to the right side surface 61 a of the outdoor unit 3 so as to cover the terminal block, the pipe connection portion, and the ground terminal 10.
The ground terminal 10 is electrically connected to the side plate 6, and the side plate 6 is grounded via the ground terminal 10. The bottom plate 8 is fastened to the side plate 6 by a fixing screw (not shown) with a protrusion, and is electrically connected to the side plate 6 by this fixing screw, and is grounded through the side plate 6 and the fixing screw.

[Configuration of the top plate 7]
Similar to the side plate 6, the top plate 7 includes a metal plate 70 and an insulating coating film 16 disposed so as to cover the surface of the metal plate 70 to prevent corrosion or the like (FIG. 4). reference). The top plate 7 is for preventing rainwater and the like from entering the housing 5, and has a side wall 71 protruding downward over the entire circumference of the edge.

  When the side wall 71 of the top plate 7 is disposed at a position fixed to the side plate 6, the side wall 71 a overlaps with the right side wall 71 a having a portion that overlaps the standing portion 63 a of the right side surface 61 a and the standing portion 63 b of the left side surface 61 b. A left side wall 71b having a portion, a front side wall 71c having a portion overlapping with the standing portion 63c of the front side surface 61c, and a back side wall 71d having a portion overlapping with the standing portion 63d of the back side surface 61d. Further, the right side wall 71a and the left side wall 71b are provided with second fastening holes 72a and 72b arranged at substantially the center portions thereof. The second fastening holes 72a and 72b are formed in the standing portion 63a of the right side surface 61a and the standing portion 63b of the left side surface 61b, respectively, when the top plate 7 is disposed at a position where the top plate 7 is fixed to the side plate 6. It arrange | positions in the same position as the 1st fastening holes 64a and 64b. The diameters of the second fastening holes 72a and 72b are larger than the diameters of the first fastening holes 64a and 64b.

  The fixing screws 12 and 13 electrically connect the top plate 7 to the side plate 6 through the first fastening holes 64a and 64b and the second fastening holes 72a and 72b in a state where the top plate 7 is attached to the upper portion of the side plate 6. Fixed in a connected state. The fixing screw 12 has a head 121 having an outer diameter larger than the diameter of the second fastening hole 72 a formed in the top plate 7 and a thread portion 122 that is screwed into the first fastening hole 64 a formed in the side plate 6. And a protrusion 123 protruding downward from the bottom surface of the head 121. The configuration of the fixing screw 13 is the same as the configuration of the fixing screw 12.

  Further, the right side wall 71a of the top plate 7 is provided with a mounting hole 74 arranged in a portion (a portion other than the broken line portion 73 in FIG. 3) that does not overlap with the standing portion 63a of the right side surface 61a. Specifically, the mounting hole 74 of the top plate 7 is provided at a position corresponding to the notch 65a disposed between the standing portion 63a of the right side surface 61a and the standing portion 63d of the back side surface 61d. . Moreover, the mounting hole 74 of the top plate 7 is provided in the same side surface as the right side surface 61a in which the ground terminal 10 is provided in the outdoor unit 3.

  The grounding confirmation screw 14 is attached to the attachment hole 74 of the top plate 7. The grounding confirmation screw 14 has a head portion 141 having an outer diameter larger than the diameter of the mounting hole 74 of the top plate 7 and a screw thread portion 142 that is screwed into the mounting hole 74 of the top plate 7.

[Mounting structure of side plate 6 and top plate 7]
Next, the attachment structure of the side plate 6 and the top plate 7 will be described with reference to FIG. 4 is a schematic diagram of a cross section taken along line AA in FIG.

  When the top plate 7 is disposed at a position where it is fixed at the upper end of the side plate 6, the right side wall 71a of the top plate 7 and the standing portion 63a of the right side surface 61a overlap each other. In this state, the fixing screw 12 passes from the outside of the right side wall 71 a of the top plate 7 through the second fastening hole 73 a of the top plate 7, and the thread portion 122 is screwed into the first fastening hole 64 a of the side plate 6. The At this time, the top plate 7 is fixed to the side plate 6 by being pressed toward the side plate 6 by the protrusion 123 of the fixing screw 12. Then, when the thread portion 122 is screwed into the first fastening hole 64a of the side plate 6, the coating film 15 of the side plate 6 covering the inner peripheral surface of the first fastening hole 64a of the side plate 6 is scraped off, and FIG. As shown in the part surrounded by the alternate long and short dash line, the metal plate 60 of the side plate 6 is contacted. On the other hand, FIG. 4 shows a state in which the protrusion 123 of the fixing screw 12 scrapes the coating film 16 of the top plate 7 but does not reach the metal plate 70 of the top plate 7. Therefore, in FIG. 4, since the fixing screw 12 is not in contact with the metal plate 70 of the top plate 7, the top plate 7 is not grounded since it is not electrically connected to the side plate 6. is there.

  In addition, the screw thread 142 is screwed into the mounting hole 74 of the top plate 7 from the outside of the right side wall 71 a of the top plate 7. Then, when the screw thread portion 142 is screwed into the mounting hole 74 of the top plate 7, the coating film 16 of the top plate 7 covering the inner peripheral surface of the mounting hole 74 of the top plate 7 is shaved, and FIG. As shown in the part surrounded by the alternate long and short dash line, it contacts the metal plate 70 of the top plate 7.

(Characteristics of the air conditioner according to the embodiment)
The outdoor unit 3 according to this embodiment has the following characteristics.

  In the outdoor unit 3 of the present embodiment, when the top plate 7 is fixed to the side plate 6 with the fixing screw 12, the protrusion 123 of the fixing screw 12 does not reach the metal plate 70 of the top plate 7, and the top plate 7 Even when it is not electrically connected to the grounded side plate 6 via the fixing screw 12, the grounding state of the top plate 7 can be reliably confirmed using the grounding confirmation screw 14. Therefore, in order to ensure the insulation of the top plate 7, an insulating member is arranged on the inner peripheral surface of the top plate 7 or the wiring is connected so that the wiring connected to the electrical components in the outdoor unit 3 does not contact the top plate 7. Measures such as fixing are no longer necessary.

  Further, in the outdoor unit 3 of the present embodiment, the grounding confirmation screw 14 is attached to the same side surface as the side surface 61a provided with the grounding terminal 10, so that a potential difference between the grounding confirmation screw 14 and the grounding terminal 10 is detected. Thus, the work of confirming the grounding state of the top plate 7 can be easily performed.

  As mentioned above, although embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

  Moreover, in the said embodiment, although the fixing screw 12 screwed by the 1st fastening hole 64a of the side plate 6 was used as a member which fixes the top plate 7 to the side plate 6, it is not limited to this, The top plate 7 is used. What is necessary is just to scrape the coating film 15 of the side plate 6 and contact the metal plate 60 of the side plate 6 when fixing to the side plate 6.

  Moreover, in the said embodiment, although the grounding confirmation screw 14 was attached to the same side surface 61a as which the earth terminal 10 was provided in the outdoor unit 3, it is not limited to this, In the outdoor unit 3, the earth terminal 10 is You may attach to the side surface which is not provided.

  In the above embodiment, the grounding confirmation screw 14 is provided at a position corresponding to the notch 65a on the right side surface of the outdoor unit 3. However, the present invention is not limited to this and is provided at a position corresponding to another notch. Also good.

  Moreover, in the said embodiment, although the screw 14 for grounding confirmation was fixed to the top plate 7 in the position corresponding to the notches 65a-65d provided in order to prevent that an adjacent standing part interferes, this For example, a notch for arranging a grounding confirmation screw may be provided in the standing portions 63a to 63d and fixed to the top plate at a position corresponding to the notch.

  Moreover, in the said embodiment, although the fixing screw 12 has the protrusion 123 which protrudes below from the bottom face of the head 121, it is not limited to this, The thing which does not have a protrusion may be sufficient. Further, the grounding confirmation screw 14 does not have a protrusion protruding downward from the bottom surface of the head 141, but is not limited thereto, and protrudes downward from the bottom surface of the head 141 similarly to the fixing screw 12. You may have the protrusion to do.

  In the said embodiment, although the outdoor unit was demonstrated to the example as an air conditioner, it is not limited to this, For example, an indoor unit may be sufficient.

  By using the present invention, it is possible to provide an air conditioner that can reliably check the grounding state of a metal plate covered with a coating film.

3 Outdoor unit (air conditioner)
6 Side plate (first member)
7 Top plate (second member)
10 Grounding terminal (grounding member)
12 Fixing screw (fixing member)
14 Grounding confirmation screw (grounding confirmation member)
15 Paint film (first paint film)
16 Paint film (second paint film)
60 metal plate (first metal plate)
62a to 62d bent portion 64a first fastening hole (first hole)
65a-65d Notch 70 Metal plate (second metal plate)
72a Second fastening hole (second hole)
74 Mounting hole (3rd hole)

Claims (8)

A first member having a first metal plate covered with a first coating film;
A second member having a region overlapping the first member and having a second metal plate covered with a second coating film;
A fixing member that fixes the first member and the second member in a state of being overlapped in the region of the second member;
A grounding confirmation member fixed to the second member in a portion other than the region of the second member,
The fixing member scrapes the first coating film and contacts the first metal plate when fixing the first member and the second member,
When the grounding confirmation member is fixed to the second member, the second paint film is scraped off to contact the second metal plate. The air conditioner according to claim 1, wherein the fixing member scrapes the second coating film and contacts the second metal plate when fixing the first member and the second member. . The fixing member and the grounding confirmation member are screw members,
The fixing member is threaded into the first hole formed in the first member through the second hole formed in the second member from the second member side, While fixing the 1 member and the second member in an overlapped state,
The air conditioner according to claim 1 or 2, wherein the grounding confirmation member is fixed to the second member by being screwed into a third hole formed in the second member. . The air conditioner according to claim 3, wherein the second hole portion is configured to be larger than the first hole portion. The first member has a notch;
The air conditioner according to any one of claims 1 to 4, wherein the ground contact confirmation member is fixed to the second member at a position corresponding to the notch. The first member has a bent portion,
The air conditioner according to claim 5, wherein the notch is formed in the bent portion. An outdoor unit having a housing,
The first member is a side plate disposed on a side surface of the housing;
The air conditioner according to any one of claims 1 to 6, wherein the second member is a top plate that is disposed on an upper surface of the housing and above the side plate. A grounded grounding member is provided on one side of the housing,
The air conditioner according to claim 7, wherein the grounding confirmation member is fixed to the second member on one side surface of the housing where the grounding member is provided.

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