JP5533151B2 - Case and air conditioner equipped with the same - Google Patents

Description

  The present invention relates to a housing having a structure in which a plurality of sheet metal members are connected, and an air conditioner including the same.

  For example, a case such as an outdoor unit of an air conditioner has a structure in which a plurality of sheet metal members such as a top plate and a side plate are connected. In such a housing, for example, the top plate and the side plate are connected by screwing a male screw into a screw hole provided at the end of the top plate and a screw hole provided at the end of the side plate. By the way, in recent years, sheet metal members tend to be thinned for the purpose of reducing the weight and cost of products. When the sheet metal member is thinned, the screw hole dimension (depth) in the insertion direction of the male screw is reduced, so that the tightening torque of the screw is reduced.

  For example, Patent Document 1 discloses a method of securing a tightening torque by performing burring (flange processing) on a metal plate having a large plate thickness and fixing the metal plate to the inner surface of the side plate by welding or the like. However, in this method, since it is necessary to attach a metal fitting of another member to the side plate by a method such as welding, the number of parts increases, and the number of assembly steps by welding increases.

  Therefore, Patent Document 1 further discloses a housing structure in which screw holes are formed by burring on both of the sheet metal members to be fastened. That is, in this housing, the side plate is subjected to burring to form screw holes, and the top plate is similarly subjected to burring to form screw holes.

JP 2008-256296 A

  However, in the case of Patent Document 1, since it is necessary to form screw holes in both sheet metal members, the work process becomes complicated, and the screw holes in both sheet metal members may be displaced.

  Therefore, the present invention has been made in view of the above points, and the purpose of the present invention is to prevent the positional displacement of the screw holes even when the sheet metal member is thinned, and the manufacturing process is complicated. It is an object of the present invention to provide a casing that can be suppressed and that can secure a tightening torque of a screw, and an air conditioner including the casing.

  The present invention relates to a housing in which a plurality of sheet metal members are connected. The casing includes a first sheet metal member (19), a second sheet metal member (31) disposed adjacent to the first sheet metal member (19), the first sheet metal member (19), and the second sheet metal member. A male screw (23) for connecting the sheet metal member (31). The first sheet metal member (19) is provided with a through hole (19c) at an end (19b). The second sheet metal member (31) includes a first flat plate portion (311) and a second flat plate portion (312), and a first cylindrical portion (313) and a second cylindrical portion (314). The first flat plate portion (311) and the second flat plate portion (312) are formed by folding a part of a sheet metal and are arranged to face each other. The first cylindrical portion (313) protrudes in a cylindrical shape from the first flat plate portion (311), and has a threaded portion (315) on the inner surface. The second cylindrical portion (314) protrudes in a cylindrical shape from the second flat plate portion (312), has a threaded portion (316) on the inner surface, and is arranged in series with the first cylindrical portion (313). Yes. The male screw (23) is inserted into the through hole (19c), and the threaded portion (315) of the first cylindrical portion (313) and the threaded portion (316) of the second cylindrical portion (314). ).

  In this configuration, the first cylindrical portion (313) and the second cylindrical portion that are arranged substantially in series with the first flat plate portion (311) and the second flat plate portion (312) that are arranged to face each other by folding a part of the sheet metal. (314) are provided. Both the inner surfaces of the first cylindrical portion (313) and the second cylindrical portion (314) function as screwing portions (315, 316), and male screws (23) are screwed into the screwing portions (315, 316). Combined. Therefore, since the dimension of the screw hole in the insertion direction (D) of the male screw (23) can be increased, a sufficient tightening torque of the male screw (23) can be ensured.

Further, in this configuration, a screw hole is not formed in both of the two sheet metal members as in the case of Patent Document 1, but a part of the sheet metal is formed in one sheet metal member (second sheet metal member (31)). Since the screw holes are respectively formed in the first flat plate portion (311) and the second flat plate portion (312) arranged to face each other by folding back, the positional displacement of the screw holes hardly occurs and the manufacturing process can be simplified.
In the present invention, the end portion (19b), the first flat plate portion (311), and the second flat plate portion (312) of the first sheet metal member (19) are inserted in this order in the insertion direction (D ), The first cylindrical portion (313) protrudes from the first flat plate portion (311) in the direction opposite to the insertion direction (D), and the second cylindrical portion (314). Protrudes from the second flat plate portion (312) in the insertion direction (D).
In this configuration, the first cylindrical portion (313) and the second cylindrical portion (314) protrude in opposite directions from the first flat plate portion (311) and the second flat plate portion (312) arranged to face each other. Yes. That is, the portion including the first flat plate portion (311) and the second flat plate portion (312) and the first cylindrical portion (313) and the second cylindrical portion (314) projecting from the first flat plate portion (311) is the insertion direction (D). It has a well-balanced arrangement structure in which a cross section parallel to the shape is substantially a cross shape. In this configuration, the first cylindrical portion (313) and the second cylindrical portion (314) arranged substantially in series play a role of actually supporting the male screw (23) by being engaged with the male screw (23). On the other hand, the first flat plate portion (311) and the second flat plate portion (312) which are disposed to face each other in the vicinity of the center in the insertion direction (D) of the first cylindrical portion (313) and the second cylindrical portion (314) are It plays the role which improves the rigidity of the part containing the 1st flat plate part (311) and the 2nd flat plate part (312), and the 1st cylindrical part (313) and the 2nd cylindrical part (314). Therefore, with this configuration, the structure has excellent rigidity, and the male screw (23) can be stably held.

  According to an embodiment of the present invention, the end (19b), the first flat plate portion (311), and the second flat plate portion (312) of the first sheet metal member (19) are arranged in this order in the male screw (23). ) In the insertion direction (D) of the first cylindrical portion (313), and the inner diameter of the threaded portion (315) at least at the upstream end in the insertion direction (D) of the first cylindrical portion (313) is It is larger than the inner diameter of the threaded portion (316) of the second cylindrical portion (314).

  In this configuration, the inner diameter of the threaded portion (315) at the upstream end of the first cylindrical portion (313) is larger than the inner diameter of the threaded portion (316) of the second cylindrical portion (314). 23) When the screw part (315, 316) is screwed, the tip part of the male screw (23) is inserted into the screw insertion port of the first cylindrical part (313) where the screw part (315) is formed. Cheap. Thereby, the assembly work efficiency of a housing | casing can be improved.

  According to another embodiment of the present invention, the second flat plate portion (312) is formed by the elastic force of the folded portion connecting the first flat plate portion (311) and the second flat plate portion (312). The flat plate portion (311) is biased in a direction away from the first flat plate portion (311).

  In this configuration, since the second flat plate portion (312) is urged in the separation direction by the elastic force, the male screw (23) screwed into the screwing portion (315) and the screwing portion (316). The force in the separation direction is applied through the threaded portion (316). That is, the pressure applied from the threaded portion (316) to the male screw (23) is increased at the contact surface between the thread of the male screw (23) and the threaded thread of the female screw at the threaded portion (316). 23) can be suppressed.

  According to another embodiment of the present invention, a gap is provided between the first flat plate portion (311) and the second flat plate portion (312).

  In this configuration, since a gap is provided between the first flat plate portion (311) and the second flat plate portion (312), the first cylindrical portion (313) and the second cylinder in the insertion direction (D). The distance to the portion (314) can be increased. Accordingly, in the insertion direction (D), the contact portion between the male screw (23) and the screwed portion (315) of the first cylindrical portion (313), and the screw of the male screw (23) and the second cylindrical portion (314). The distance to the contact portion with the joint portion (316) can be increased. That is, since the distance between the two fulcrums that support the male screw (23) can be increased, the male screw (23) is more stably supported by the first cylindrical portion (313) and the second cylindrical portion (314). Can do.

  The air conditioning apparatus of the present invention includes the casing (13). The second sheet metal member (31) is connected to the first flat plate portion (311) or the second flat plate portion (312), and extends to the outside of the housing (13) (31b). ) And a sheet metal main body (31a) which is connected to the extended portion (31b) and has an outer surface disposed substantially on the same plane as the outer surface of the first sheet metal member (19).

  As described above, according to the present invention, even when the sheet metal member is thinned in the housing, the screw hole is less likely to be displaced, and the manufacturing process is suppressed from being complicated, and the screw is tightened. Torque can be secured.

(A) And (B) is a perspective view which shows the air conditioning apparatus which concerns on one Embodiment of this invention, respectively, (C) is the perspective view which expanded the area | region enclosed with the broken-line circle mark of (B). It is. (A) is sectional drawing to which the connection part of the top plate and left side plate in the housing | casing which concerns on 1st Embodiment of this invention was expanded, and has shown the state before screwing a male screw. (B) (A) (C) is sectional drawing which shows the modification of the housing | casing of (A). (A)-(C) are sectional drawings which show the procedure of forming a left side plate by sheet metal processing. It is sectional drawing to which the connection part of the top plate and left side board in the housing | casing which concerns on 2nd Embodiment of this invention was expanded. It is sectional drawing which expanded the said connection part of FIG. 4 further. It is an expanded sectional view showing the modification of the case of a 2nd embodiment. (A) And (B) is sectional drawing to which the connection part of the top plate and side plate in the housing | casing which concerns on 3rd Embodiment of this invention was expanded, (A) is the screwing of a top plate and a side plate with a male screw. FIG. 4B shows a state before the male screw is screwed to the screwed portion of the top plate and the side plate. It is sectional drawing to which the connection part of the top plate and side plate in the housing | casing which concerns on 4th Embodiment of this invention was expanded. (A) is sectional drawing to which the connection part of the top plate and side plate in the housing | casing which concerns on a 5th form was expanded, (B) is sectional drawing which shows the modification of the housing | casing of (A). (A) is an enlarged cross-sectional view of a connecting portion of the top plate and the side plate in the housing according to the sixth form state, (B), the coupling portion of the top plate and the side plate in the housing according to the seventh form state FIG.

  Hereinafter, a housing and an air conditioner including the housing according to an embodiment of the present invention will be described in detail with reference to the drawings. The air conditioner according to the present embodiment includes an outdoor unit 11 described later and an indoor unit (not shown).

  As shown in FIGS. 1A and 1B, the outdoor unit 11 includes a housing 13 and various components such as a heat exchanger (not shown), a compressor, and a blower housed in the housing 13. And. The housing 13 has a structure in which a plurality of sheet metal members are connected, and has a rectangular parallelepiped shape. The plurality of sheet metal members include a front plate 15, a back plate 17, a top plate 19, a right side plate 21, a left side plate 31, and a bottom plate not shown.

  An unillustrated air outlet is provided in the front plate 15 of the housing 13. An outlet grill 27 is attached to the outlet. The back plate 15 and the side plate 31 of the housing 13 are provided with a plurality of suction ports 27. When the blower is driven, outside air is sucked into the housing 13 through the suction port 27. The sucked outside air exchanges heat with the refrigerant when passing through the heat exchanger, and is blown out through the outlet of the front plate 15.

  As shown in FIG. 1 (B), adjacent sheet metal members are connected by a male screw 23 screwed into a screw hole provided in one or both of them. For example, as shown in FIG. 1C in which a portion surrounded by a broken-line circle in FIG. 1B is enlarged, an end portion 19b of the top plate 19 and a later-described portion disposed adjacent to the top plate 19 are shown. The left side plate 31 is connected to the facing portion 31 c by a male screw 23.

  Hereinafter, the connection structure between the sheet metal members in the housing 13 will be specifically described by taking the connection portion between the top plate 19 and the left side plate 31 as an example. In addition, about the connection part of other sheet metal members, since it has the same structure as the connection part of the top plate 19 and the left side board 31, the description is abbreviate | omitted.

(First embodiment)
As shown in FIGS. 1A to 1C and FIG. 2A, the top plate 19 as the first sheet metal member is disposed in a substantially horizontal direction and closes the upper portion of the housing 13. A portion 19a and an end portion 19b extending downward from the periphery of the sheet metal main body portion 19a in a flange shape are provided. The end portion 19b is provided with a through hole 19c. The end 19b is a region having a width in a direction substantially perpendicular to the sheet metal body 19a to the extent that the through hole 19c can be provided. The top plate 19 is formed by sheet metal processing.

  The left side plate 31 as the second sheet metal member is arranged in a substantially vertical direction to close the left side portion of the housing 13 and the inside of the end portion 19b of the top plate 19 (in the insertion direction D side). In FIG. 2, there are a facing portion 31c disposed facing the end portion 19b, and an extending portion 31b extending in a substantially horizontal direction and connecting the facing portion 31c and the sheet metal main body portion 31a.

  The facing portion 31 c includes a first flat plate portion 311, a second flat plate portion 312, a first cylindrical portion 313, and a second cylindrical portion 314. The first flat plate portion 311 and the second flat plate portion 312 are portions formed by folding back a part of the sheet metal, and are arranged to face each other.

  The lower end of the first flat plate portion 311 of the facing portion 31c is connected to the inner end portion of the extending portion 31b, and the upper end of the sheet metal main body portion 31a is connected to the outer end portion of the extending portion 31b. By providing such an extending portion 31 b, the outer surface of the sheet metal main body portion 31 a of the left side plate 31 is disposed on substantially the same plane as the outer surface of the end portion 19 b of the top plate 19.

  The first cylindrical portion 313 protrudes from the first flat plate portion 311 in a cylindrical shape in the direction opposite to the insertion direction D. The first cylindrical portion 313 has a through hole extending in the insertion direction D therein. The inner surface of this through hole is a screwing portion 315 to which the male screw 23 is screwed.

  The second cylindrical portion 314 protrudes in a cylindrical shape from the second flat plate portion 312 in the insertion direction D. The second cylindrical portion 314 has a through hole extending in the insertion direction D inside. The inner surface of the through hole is a screwing portion 316 to which the male screw 23 is screwed. The through-holes of the first cylindrical portion 314 and the through-holes of the second cylindrical portion are arranged substantially in series along the insertion direction D.

  In the first embodiment, the protruding length of the first cylindrical portion 313 from the first flat plate portion 311 is substantially the same as the protruding length of the second cylindrical portion 314 from the second flat plate portion 312. Further, the inner diameter of the screwing portion 314 is substantially the same as the inner diameter of the screwing portion 316.

  As shown in FIG. 2A, the male screw 23 has a head portion 23a and a shaft portion 23b extending from the head portion 23a and having a screw thread formed on the outer surface. As the male screw 23, various types of screws can be used. In particular, when a tapping screw is used as the male screw 23, the tapping screw can be tapped with the tapping screw alone, so that the step of forming the female screw at the screwing portions 315 and 316 can be omitted. When a screw other than the tapping screw is used as the male screw 23, a female screw may be formed in advance in the screwing portions 315 and 316.

  As the shape of the male screw 23, a straight screw having substantially the same thickness of the shaft portion 23b, or a taper screw having a thicker base side of the shaft portion 23b can be used. In addition to the shape shown in FIG. 2A, the shaft portion 23b may have a sharp tip.

  The left side plate 31 can be formed, for example, by sheet metal processing as shown in FIGS. First, the first cylindrical part 313 and the second cylindrical part 314 are formed by burring on the sheet metal shown in FIG. 3A, and the sheet metal main body part 31a and the extension part 31b are formed by bending. Next, the sheet metal is bent at a substantially intermediate position C between the first cylindrical portion 313 and the second cylindrical portion 314. As a result, as shown in FIG. 3C, the first cylindrical portion 313 and the second cylindrical portion 314 are arranged substantially in series to form the facing portion 31c. As described above, when a screw other than the tapping screw is used as the male screw 23, the female screw is formed in the screwed portions 315 and 316 on the inner surfaces of the first cylindrical portion 313 and the second cylindrical portion 314.

  As shown in FIG. 2A, the end 19b, the first flat plate portion 311 and the second flat plate portion 312 of the top plate 19 are arranged in this order along the insertion direction D of the male screw 23. 2B, the male screw 23 is inserted into the through hole 19c of the top plate 19, and is screwed into the screwing portion 315 of the first cylindrical portion 313 and the screwing portion 316 of the second cylindrical portion 314. Combined. When a tapping screw is used as the male screw 23, the male screw 23 is pushed into the screwing portions 315 and 316 along the insertion direction D while rotating the male screw 23 using a screwdriver or the like. A thread along the thread shape is formed. Thereby, the top plate 19 and the left side plate 31 are connected.

  FIG. 2C is a cross-sectional view illustrating a modified example of the housing 13 in FIG. As in the modification shown in FIG. 2C, a structure in which the lower end of the second flat plate portion 312 of the facing portion 31c is connected to the inner end portion of the extending portion 31b may be used.

  As described above, in the first embodiment, the first cylindrical portion 313 and the second cylindrical portion that are arranged substantially in series on the first flat plate portion 311 and the second flat plate portion 312 that are arranged to face each other by folding a part of the sheet metal. A cylindrical portion 314 is provided. Each of the first cylindrical portion 313 and the second cylindrical portion 314 has a threaded portion. Therefore, since the dimension (depth) of the screwing portion into which the male screw 23 is screwed can be increased, the tightening torque of the male screw 23 can be ensured. In addition, screw holes are not formed in both the top plate and the side plate as in the prior art, but screw holes are formed in one of the sheet metal members (left side plate 31), so that the screw holes are less likely to be displaced and the manufacturing process Can also be simplified.

  In the first embodiment, the first cylindrical portion 313 and the second cylindrical portion 314 protrude in opposite directions from the first flat plate portion 311 and the second flat plate portion 312 that are arranged to face each other. In other words, the portion including the first flat plate portion 311 and the second flat plate portion 312 and the first cylindrical portion 313 and the second cylindrical portion 314 projecting from the first flat plate portion 311 and the second cylindrical portion 314, respectively, is balanced so that the cross section parallel to the insertion direction D becomes a substantially cross shape. It has a good arrangement structure. In the first embodiment, the first cylindrical portion 313 and the second cylindrical portion 314 arranged substantially in series play a role of supporting the male screw 23, while the insertion direction D of the first cylindrical portion 313 and the second cylindrical portion 314. The first flat plate portion 311 and the second flat plate portion 312 extending in a direction substantially perpendicular to the insertion direction D in the vicinity of the center of each of the two portions play a role of improving the rigidity of the facing portion 31c. Therefore, the housing 13 of the first embodiment has a structure with excellent rigidity, and can hold the male screw 23 stably.

(Second Embodiment)
FIG. 4 is an enlarged cross-sectional view of a connecting portion between the top plate 19 and the left side plate 31 in the housing 13 according to the second embodiment of the present invention. FIG. 5 is a sectional view further enlarging the connecting portion of FIG. FIG. 6 is an enlarged cross-sectional view showing a modified example of the housing 13 of FIGS. 4 and 5.

  In the housing 13 according to the second embodiment, the inner diameter of the threaded portion 315 at least at the upstream end in the insertion direction D of the first cylindrical portion 313 is equal to the inner diameter of the threaded portion 316 of the second cylindrical portion 314. Is different from the first embodiment. In addition, the same code | symbol is attached | subjected to the same component as 1st Embodiment here, and the detailed description is abbreviate | omitted.

  First, the housing 13 shown in FIGS. 4 and 5 will be described. As shown in FIG. 4, in the housing 13, the inner diameter d1 of the screwing portion 315 of the first cylindrical portion 313 is larger than the inner diameter d2 of the screwing portion 316 of the second cylindrical portion 315. The inner diameter d5 of the through hole 19c at the end 19b of the top plate 19 is larger than the inner diameter d1 of the screwing portion 315.

  When a tapping screw is used as the male screw 23, the male screw 23 is pushed into the screwing portions 315 and 316 along the insertion direction D while rotating the male screw 23 using a screwdriver or the like. A thread along the thread shape is formed.

  When a screw other than the tapping screw is used as the male screw 23, a female screw is formed in advance in the screwing portions 315 and 316 as shown in FIG. The internal diameter d1 of the internal thread in the threaded portion 315 is larger than the internal diameter d2 of the internal thread of the threaded portion 316 in the second cylindrical portion 315. The diameter d3 of the valley of the internal thread in the threaded portion 315 is substantially the same as the diameter d4 of the valley of the internal thread in the threaded portion 316.

  Next, a modification of the second embodiment shown in FIG. 6 will be described. As shown in FIG. 6, in this modification, the male screw 23 is a taper screw whose outer diameter on the base side of the shaft portion 23b is larger than the outer diameter on the tip side. When such a taper screw is used, a tapping screw may be used as described above, or a screw other than the tapping screw may be used. When a tapping screw is used, when the male screw 23 is screwed, a female screw as shown in FIG. 6 is formed in the screwing portions 315 and 316. When using a screw other than the tapping screw, a female screw as shown in FIG. 6 may be formed in advance in the screwing portions 315 and 316.

  As shown in FIG. 4, the screwing portions 315 and 316 to which the male screw 23 is screwed have an inner diameter of the screwing portion 315 larger than an inner diameter of the screwing portion 316. The screwed portion 315 and the screwed portion 316 may have a shape having a constant inner diameter along the insertion direction D, and the inner diameter increases toward the insertion direction D side so as to match the shape of the shaft portion 23b. The taper shape may be small. The inner diameter d5 of the through hole 19c at the end 19b of the top plate 19 is larger than the inner diameter of the screwing portion 315.

  In the second embodiment described above, when the male screw 23 is screwed into the screwing portions 315 and 316, the tip of the shaft portion 23b of the male screw 23 can be easily inserted into the inlet of the first cylindrical portion 313. Thereby, the assembly work efficiency of a housing | casing can be improved. Further, when the male screw 23 has a tapered shape, when the screwing with the screwing portions 315 and 316 progresses to the root side portion of the male screw 23, the root portion serves as a stopper to suppress overtightening. Can do.

(Third embodiment)
7 (A) and 7 (B) are enlarged cross-sectional views of the connecting portion of the top plate 19 and the left side plate 31 in the housing 13 according to the third embodiment of the present invention. 7A shows a state before the male screw 23 is screwed into the screwing portions 315 and 316 of the top plate 19 and the side plate 31, and FIG. 7B shows the male screw 23 with the top plate 19 and the left side plate 31. The state after screwing in the screwing portions 315 and 316 is shown. In addition, the same code | symbol is attached | subjected to the same component as 1st Embodiment here, and the detailed description is abbreviate | omitted.

  In the third embodiment, before the male screw 23 is screwed into the screwing portions 315 and 316, as shown in FIG. 7A, the first flat plate portion 311 and the second flat plate portion 312 are formed in the facing portion 31c. A gap t1 is provided between the two.

  When the male screw 23 is screwed into the screwing portions 315 and 316, for example, the operator pushes the second flat plate portion 312 toward the first flat plate portion 311 as indicated by an arrow in FIG. The vicinity of the folded portion 317 of the facing portion 31c is elastically deformed. Specifically, for example, the folded portion 317 is elastically deformed to bring the second flat plate portion 312 into surface contact with the first flat plate portion 311. In this state where the folded portion 317 is elastically deformed, the male screw 23 is screwed into the screwing portions 315 and 316 as shown in FIG.

  In a state in which the top plate 19 and the left side plate 31 are connected, the second flat plate portion 312 is moved relative to the first flat plate portion 311 by the elastic force of the folded portion 317 that connects the first flat plate portion 311 and the second flat plate portion 312. It is biased in the direction F away from the first flat plate portion 311. As a result, the pressure applied from the threaded portion 316 to the male screw 23 at the contact surface between the thread of the male screw 23 and the thread of the female screw at the threaded portion 316 is increased, and the frictional force at the contact surface increases. The looseness of the male screw 23 can be suppressed.

(Fourth embodiment)
FIG. 8 is an enlarged cross-sectional view of a connecting portion between the top plate and the side plate in the housing according to the fourth embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the same component as 1st Embodiment here, and the detailed description is abbreviate | omitted.

  In the fourth embodiment, a gap t <b> 2 is provided between the first flat plate portion 311 and the second flat plate portion 312 in a state where the top plate 19 and the left side plate 31 are connected by the male screw 23.

  Therefore, the distance along the insertion direction D between the first cylindrical portion 313 and the second cylindrical portion 314 can be increased. As a result, the contact portion between the male screw 23 and the screwed portion 315 of the first cylindrical portion 313 and the contact portion between the male screw 23 and the screwed portion 316 of the second cylindrical portion 314 are separated in the direction along the insertion direction D. be able to. That is, since the distance between the two fulcrums that support the male screw 23 can be increased, the male screw 23 is stably supported by the first cylindrical portion 313 and the second cylindrical portion 314.

(Fifth form state)
Figure 9 (A) is an enlarged cross-sectional view of a connecting portion of the top plate and the side plate in the housing according to a fifth form state, and FIG. 9 (B), a cross section showing a modification of the housing of the (A) FIG. In addition, the same code | symbol is attached | subjected to the same component as 1st Embodiment here, and the detailed description is abbreviate | omitted.

In the fifth form state, the first cylindrical portion 313 protrudes in the insertion direction D from the first flat plate portion 311, second cylindrical portion 314 protrudes in the insertion direction D from the second flat plate portion 312. The first flat plate portion 311 is in surface contact with the end portion 19 b of the top plate 19. Therefore, since the contact area between the top plate 19 and the left side plate 31 can be increased, the connection state between the top plate 19 and the left side plate 31 becomes more stable.

  9A, the extended portion 31b is connected to the lower end of the first flat plate portion 311. However, the extended portion 31b is the lower end of the second flat plate portion 312 as in the modification of FIG. The structure connected to may be sufficient.

(Sixth, seventh form status)
10 (A) is an enlarged sectional view of a connecting portion of the top plate and the side plate in the housing according to the sixth form state. Figure 10 (B) is an enlarged sectional view of a connecting portion of the top plate and the side plate in the housing according to a seventh form state.

In the sixth form state, the first cylindrical portion 313 protrudes in the insertion direction D from the first flat plate portion 311. The second cylindrical portion 314 protrudes from the second flat plate portion 312 in the direction opposite to the insertion direction D. The first flat plate portion 311 is in surface contact with the end portion 19 b of the top plate 19. Therefore, since the contact area between the top plate 19 and the left side plate 31 can be increased, the connection state between the top plate 19 and the left side plate 31 becomes more stable.

Further, in the seventh form state, the first cylindrical portion 313 protrudes in a direction opposite to the insertion direction D from the first flat plate portion 311. The second cylindrical portion 314 protrudes from the second flat plate portion 312 in the direction opposite to the insertion direction D.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to each said embodiment, A various change, improvement, etc. are possible in the range which does not deviate from the meaning.

  For example, in the above-described embodiment, the case where the through hole is provided in the end portion of the first sheet metal member (top plate) has been described as an example. However, the through hole of the first sheet metal member can also be used as a screwing portion. . Accordingly, the male screw is screwed not only in the screwed portion of the first cylindrical portion and the screwed portion of the second cylindrical portion in the second sheet metal member, but also in the through hole of the first sheet metal member. Can be further increased.

  In the above embodiment, the case where the protruding lengths of the first cylindrical portion and the second cylindrical portion are substantially the same has been described as an example, but one of these may be longer than the other.

  Moreover, although the said embodiment gave and demonstrated the case where the housing | casing was applied to the air conditioning apparatus as an example, the housing | casing of this invention can also be used for uses other than an air conditioning apparatus.

DESCRIPTION OF SYMBOLS 11 Outdoor unit 13 Housing | casing 15 Front plate 17 Back plate 19 Top plate 19a Sheet metal main body part 19b End part of top plate 19c Through-hole 21 Right side plate 23 Male screw 31 Left side plate 31a Sheet metal main body part 31b Extension part 31c Opposing part 311 1st Flat plate portion 312 Second flat plate portion 313 First cylindrical portion 314 Second cylindrical portion 315, 316 Screwed portion

Claims (5)

A housing in which a plurality of sheet metal members are connected,
A first sheet metal member (19) provided with a through hole (19c) at an end (19b);
A first flat plate portion (311) and a second flat plate portion (312) which are partly folded and arranged opposite to each other, project from the first flat plate portion (311) in a cylindrical shape, and are screwed to the inner surface ( 315) and a cylindrical portion projecting from the second flat plate portion (312) and having a threaded portion (316) on the inner surface, and substantially in series with the first cylindrical portion (313). A second cylindrical member (31) arranged adjacent to the first sheet metal member (19),
The screw is inserted into the through hole (19c) and screwed into the screwed portion (315) of the first cylindrical portion (313) and the screwed portion (316) of the second cylindrical portion (314). A first sheet metal member (19) and a male screw (23) connecting the second sheet metal member (31) ,
The end portion (19b), the first flat plate portion (311), and the second flat plate portion (312) of the first sheet metal member (19) are arranged in this order along the insertion direction (D) of the male screw (23). Has been placed,
The first cylindrical portion (313) protrudes from the first flat plate portion (311) in the direction opposite to the insertion direction (D), and the second cylindrical portion (314) is connected to the second flat plate portion (312). ) Projecting in the insertion direction (D) . The end portion (19b), the first flat plate portion (311), and the second flat plate portion (312) of the first sheet metal member (19) are arranged in this order along the insertion direction (D) of the male screw (23). Has been placed,
The inner diameter of the threaded portion (315) at least at the upstream end in the insertion direction (D) of the first cylindrical portion (313) is the threaded portion (316) of the second cylindrical portion (314). The housing according to claim 1, wherein the housing is larger than the inner diameter.   The second flat plate portion (312) has the first flat plate portion (311) with respect to the first flat plate portion (311) by an elastic force of a folded portion connecting the first flat plate portion (311) and the second flat plate portion (312). The housing | casing of Claim 1 or 2 urged | biased in the direction away from a flat plate part (311).   The housing according to any one of claims 1 to 3, wherein a gap is provided between the first flat plate portion (311) and the second flat plate portion (312). It is an air conditioning apparatus provided with the housing | casing (13) of any one of Claims 1-4 ,
The second sheet metal member (31)
An extended portion (31b) connected to the first flat plate portion (311) or the second flat plate portion (312) and extending in the direction of the outside of the housing (13);
An air conditioner further including a sheet metal main body (31a) connected to the extending portion (31b) and having an outer surface disposed substantially on the same plane as the outer surface of the first sheet metal member (19).

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