JP2013088090A - Knockout structure of outdoor unit of air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a knockout structure of an outdoor unit of an air conditioner that is a knockout structure comprising slits arranged on substantially concentric pitch circuits, respectively, and suppresses deformation of annular parts between slits on an inner peripheral side and slits on an outer peripheral side when forming holes on the inner diameter side.SOLUTION: A knockout structure 201 formed on an exterior front panel forming a housing of an air-conditioner outdoor unit comprise semicircular inner peripheral slits 1a, 1b formed on an inner peripheral pitch circuit 1p having a center "O" and semicircular inner peripheral slits 2a, 2b formed on an outer peripheral pitch circuit 2p having a center "O". Inner peripheral connection parts 1u, 1v are formed between the inner peripheral slits 1a, 1b, and outer peripheral connection parts 2u, 2v are formed between the outer peripheral slits 2a, 2b. The inner peripheral connection parts 1u, 1v and outer peripheral connection parts 2u, 2v are 90° out of phase with each other in a circumferential direction.

Description

  The present invention relates to a knockout structure for an air conditioner outdoor unit, and more particularly to a knockout structure for an air conditioner outdoor unit having a slit for forming a power cable outlet.

An outdoor unit of an air conditioner (same as an outdoor unit. In the present invention, referred to as an “air conditioner outdoor unit”), a compressor or the like forming a refrigeration cycle is housed in a housing formed of a plate material such as a steel plate. Yes. A power cable is connected to the compressor or the like, and a take-out port (hereinafter referred to as “power cable outlet”) for taking out the power cable is formed on the side surface of the housing.
Since the type (outer diameter) of the power cable is determined by the electric capacity of the compressor, etc., even if it is an outdoor unit that uses the same casing, , Power cables of different outer diameters will be connected. Further, for the purpose of protecting the power cable, the power cable is inserted into a conduit (wire pipe) having a male screw portion formed at the end, and the male screw portion is inserted into the power cable outlet. The conduit is fixed to the side surface of the housing by a nut screwed into the male screw.
For this reason, a housing that can accommodate a plurality of compressors having different electrical capacities (a housing that is common to a plurality of models) has a plurality of types (outer diameters) to accommodate conduits having different outer diameters. A power cable outlet is required.

For example, an invention is disclosed in which a long hole (a relief hole) is formed in a housing and a wiring auxiliary plate in which a power cable outlet is formed in the long hole is installed. According to this invention, if a plurality of wiring auxiliary plates such as a wiring auxiliary plate formed with a small-diameter power cable outlet and a wiring auxiliary plate formed with a large-diameter power cable outlet are prepared, the housing Can be shared (for example, refer to Patent Document 1).
In addition, as an incoming line structure of the electronic device casing, there is a knockout structure consisting of arc-shaped grooves (slits) arranged concentrically in order to form incoming holes corresponding to a plurality of types (outer diameters) of cables in the casing. It is disclosed. Such a knockout structure has a thickness (knockout piece) surrounded by the arc-shaped groove on the inner diameter side made thinner than a thickness (knockout piece) surrounded by the arc-shaped groove on the outer diameter side. With the removal of the knockout piece, the outer knockout piece is prevented from being removed (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 62-77733 (page 4-6, Fig. 1) Noto 3033001 (page 6-7, Fig. 1)

The invention disclosed in Patent Document 1 has a problem in that the number of parts increases (it is necessary to prepare a wiring auxiliary plate that is not actually used), which goes against the cost reduction of the air conditioner.
In addition, since the invention disclosed in Patent Document 2 can minimize the position where the knockout structure is provided, there is no possibility of hindering the design (aesthetics), but the thickness in the knockout structure is changed to a plurality of types. Therefore, there is a problem that it cannot be applied to the case of an air conditioner outdoor unit formed of a plate material (steel plate or the like).
Furthermore, since the thickness of the inner diameter side knockout piece and the thickness of the outer diameter side knockout piece are the same in the inner knockout structure described in Patent Document 2, the removal of the inner knockout piece is accompanied. There was a problem that the outer knockout piece was removed or deformed.

  The present invention was made to solve the above problems, and is a knockout structure composed of slits respectively arranged on a substantially concentric pitch circle, and when forming an inner diameter side hole, A knockout structure for an air conditioner outdoor unit capable of suppressing deformation of the annular portion between the inner peripheral side slit and the outer diameter side slit is obtained.

  The knockout structure of the air conditioner outdoor unit according to the present invention is a knockout formed by slits formed on a plurality of substantially concentric pitch circles formed on a side surface of the casing of the air conditioner outdoor unit. And a connection formed between the slits in the pitch circle located on the outer peripheral side or the inner peripheral side of the pitch circle. The phase with the part is different in the circumferential direction.

  In the knockout structure of the outdoor unit for an air conditioner according to the present invention, the phase of the connection part formed between the slits on the inner peripheral side and the connection part formed between the slits on the outer peripheral side is in the circumferential direction. Therefore, when forming the hole on the inner diameter side, deformation of the annular portion between the slit on the inner peripheral side and the slit on the outer diameter side can be suppressed.

The perspective view which shows the air conditioner outdoor unit which has the knockout structure of the air conditioner outdoor unit which concerns on Embodiment 1 of this invention. The front view which shows the knockout structure in the air conditioner outdoor unit shown in FIG. The front view which shows the knockout structure of the air conditioner outdoor unit which concerns on Embodiment 2 of this invention. The front view which shows the knockout structure of the air conditioner outdoor unit which concerns on Embodiment 3 of this invention. The front view which shows the knockout structure of the air conditioner outdoor unit which concerns on Embodiment 4 of this invention. The front view which shows the knockout structure of the air conditioner outdoor unit which concerns on Embodiment 5 of this invention.

[Embodiment 1]
1 and 2 illustrate a knockout structure of an air conditioner outdoor unit according to Embodiment 1 of the present invention. FIG. 1 is a perspective view showing the air conditioner outdoor unit, and FIG. 2 shows a knockout structure. FIG. In addition, each figure is drawn typically and this invention is not limited to the form shown in figure. In particular, the width of the slit is broadly exaggerated.

(Air conditioner outdoor unit)
In FIG. 1, an air conditioner outdoor unit 100 has a housing 110 that houses a compressor or the like (not shown) inside, and a knockout structure 201 is formed on a steel-made outer front panel 120 that forms the housing 110. ing.

(Knockout structure)
In FIG. 2, the knockout structure 201 includes semicircular inner circumferential slits 1a and 1b formed on an inner circumferential pitch circle 1p having the center as “O (O)”, and the center as “O (O)”. Are formed by semicircular outer peripheral slits 2a and 2b formed on the outer peripheral pitch circle 2p. The inner peripheral connection portions 1u and 1v are formed between the inner peripheral slit 1a and the inner peripheral slit 1b, and the outer peripheral connection portions 2u and 2v are formed between the outer peripheral slit 2a and the outer peripheral slit 2b. . At this time, the inner peripheral connection portions 1u and 1v and the outer peripheral connection portions 2u and 2v have a 90 ° phase difference in the circumferential direction.

For this reason, when using a conduit (not shown) with a thin outer diameter, open the range (same as the knockout piece) surrounded by the inner circumferential pitch circle 1p and open a conduit (not shown) with a large outer diameter. When used, a range surrounded by the outer peripheral pitch circle 2p is opened. That is, two types (outer diameters) of conduits can be used without forming two types (outer diameters) of power cable outlets for the conduit 110 in the casing 110. Sharing of members to be formed can be promoted.
When the inner peripheral connection portions 1u and 1v are broken to open the range surrounded by the inner peripheral pitch circle 1p, the phases of the inner peripheral connection portions 1u and 1v and the outer peripheral connection portions 2u and 2v are in agreement. Therefore, the deformation of the annular portion 12 between the inner circumferential pitch circle 1p and the outer circumferential pitch circle 2p is suppressed. That is, the deformation (width is partially enlarged or reduced) of the outer peripheral slits 2a and 2b is suppressed, the annular portion 12 is maintained on the same plane as the outer front panel 120, and the design around the power cable outlet is hindered. Is prevented.

In the above description, the inner slits 1a and 1b and the outer slits 2a and 2b have the same slit width (radial width), and the inner peripheral connection portions 1u and 1v and the outer peripheral connection portions 2u and 2v are circumferential. Although the lengths of the directions are the same, the present invention is not limited to this. For example, the circumferential length of the inner peripheral connecting portions 1u, 1v is made shorter than the circumferential length of the outer peripheral connecting portions 2u, 2v, or the radial length of the inner peripheral connecting portions 1u, 1v is set to the outer circumference. The inner circumferential connecting portions 1u, 2v, 2v are made longer than the radial lengths of the connecting portions 2u, 2v (same as making the slit widths of the inner circumferential slits 1a, 1b larger than the slit widths of the outer circumferential slits 2a, 2b). The 1v break may be made easier.
In addition, although the above is formed by two inner peripheral slits 1a and 1b and two outer peripheral slits 2a and 2b, the present invention is not limited to this. Or more).

[Embodiment 2]
FIG. 3 is a front view showing a knockout structure of an air conditioner outdoor unit according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent part, and one part description is abbreviate | omitted.
The air conditioner outdoor unit knockout structure 202 according to the second embodiment is formed on a steel-made outer front panel 120 (see FIG. 1) that forms the casing 110 of the air conditioner outdoor unit 100.

  In FIG. 3, the knockout structure 202 includes substantially semicircular inner circumferential slits 1a and 1b formed on an inner circumferential pitch circle 1p whose center is “O (O)”, and the center is “O (O)”. The outer peripheral slits 2a, 2b, 2c, and 2d are formed on the outer peripheral pitch circle 2p. Inner peripheral connection portions 1u, 1v are formed on the inner peripheral pitch circle 1p, and outer peripheral connection portions 2u, 2v, 2w, 2x are formed on the outer peripheral pitch circle 2p. At this time, the inner peripheral connecting portion 1u and the outer peripheral connecting portions 2u, 2x have a 45 ° phase difference in the circumferential direction, and the inner peripheral connecting portion 1v and the outer peripheral connecting portions 2v, 2w are 45 ° in the circumferential direction. The phase is different.

  That is, the number of connection points on the outer peripheral pitch circle 2p is increased with respect to the knockout structure 201 shown in the first embodiment. Accordingly, when the inner peripheral connection portions 1u and 1v are broken to open the range surrounded by the inner peripheral pitch circle 1p, the outer peripheral connection whose phase differs from the inner peripheral connection portions 1u and 1v is formed on the outer peripheral pitch circle 2p. Since the portions 2u, 2v, 2w, and 2x are formed (the outer peripheral connection portions 2w and 2x are added), the deformation of the annular portion 12 is further suppressed. That is, the deformation (the width is partially enlarged or reduced) of the outer peripheral slits 2a, 2b, 2c, and 2d is further suppressed, and the annular portion 12 is maintained on the same plane by the outer front panel 120, and around the power cable outlet. It is prevented that the design property of is inhibited.

  In addition, although the above is formed by the two inner peripheral slits 1a and 1b and the four outer peripheral slits 2a, 2b, 2c and 2d, the present invention is not limited to this, and the inner peripheral slit is The number of outer peripheral slits may be three or more and the number of outer peripheral slits may be four or more, and the number of outer peripheral slits may be greater than the number of inner peripheral slits (the number of outer peripheral connection portions is greater than the number of inner peripheral connection portions).

[Embodiment 3]
FIG. 4 is a front view showing a knockout structure of an air conditioner outdoor unit according to Embodiment 3 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent part, and one part description is abbreviate | omitted.
The knockout structure 203 of the air conditioner outdoor unit according to Embodiment 3 is formed on a steel plate outer front panel 120 (see FIG. 1) that forms the casing 110 of the air conditioner outdoor unit 100.

  In FIG. 4, the knockout structure 203 includes inner circumferential slits 1 a, 1 b, 1 c each having a substantially 1/3 circular shape formed on an inner circumferential pitch circle 1 p whose center is “O (O)”, and a center “O”. (O) "formed on the outer circumferential pitch circle 2p having a substantially 1/3 circular shape formed on the outer circumferential pitch circle 2p and the outermost circumferential pitch circle 3p having the center as" O (O) ". The outermost peripheral slits 3a, 3b, and 3c each having a substantially 1/3 circular shape are formed. Inner peripheral connection portions 1u, 1v, 1w are formed on the inner peripheral pitch circle 1p, outer peripheral connection portions 2u, 2v, 2w are formed on the outer peripheral pitch circle 2p, and on the outermost peripheral pitch circle 3p. Outermost peripheral connection portions 3u, 3v, and 3w are formed, respectively. At this time, the inner peripheral connection portions 1u, 1v, 1w and the outer peripheral connection portions 2u, 2v, 2w have a 60 ° phase difference in the circumferential direction, and the outer peripheral connection portions 2u, 2v, 2w and the outermost peripheral connection portion 3u, 3v and 3w differ in 60 ° phase in the circumferential direction.

  That is, the concentric circle is tripled with respect to the knockout structure 201 shown in the first embodiment, and three slits (three connecting portions) are formed on each circumference. Therefore, when the inner peripheral connecting portions 1u, 1v, and 1w are broken to open a range surrounded by the inner peripheral pitch circle 1p, the annular portion 12 and the outer periphery between the inner peripheral pitch circle 1p and the outer peripheral pitch circle 2p are opened. The deformation of the annular portion 23 between the pitch circle 2p and the outermost peripheral pitch circle 3p is suppressed. Further, when the outer peripheral connection portions 2u, 2v, and 2w are broken to open a range surrounded by the outer peripheral pitch circle 2p, deformation of the annular portion 23 between the outer peripheral pitch circle 2p and the outermost peripheral pitch circle 3p is suppressed. It is done. Therefore, the design around the power cable outlet is prevented from being hindered.

  Although the concentric circles are triple in the above, the present invention is not limited to this and may be quadruple or more. Further, according to the second embodiment, the number of slits formed on each circle may be changed, and the number of slits (connection portions) may be increased as the outer circle is reached (for example, the inner circumference). There may be two lines on the pitch circle 1p, three lines on the outer peripheral pitch circle 2p, and four lines on the outermost peripheral pitch circle 3p).

[Embodiment 4]
FIG. 5 is a front view showing a knockout structure of an air conditioner outdoor unit according to Embodiment 4 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent part, and one part description is abbreviate | omitted.
The knock-out structure 204 of the air conditioner outdoor unit according to Embodiment 4 is formed on a steel plate outer front panel 120 (see FIG. 1) that forms the casing 110 of the air conditioner outdoor unit 100.

In FIG. 5, the knockout structure 204 has slits formed on a pair of square inner ring pitch lines 5p and outer ring pitch lines 6p having a common center O. That is, U-shaped inner peripheral slits 5a and 5b are formed on the inner annular pitch line 5p, and U-shaped outer peripheral slits 6a and 6b are formed on the outer annular pitch line 6p. Inner peripheral connection portions 5u and 5v are formed on the inner annular pitch line 5p, and outer peripheral connection portions 6u and 6v are formed on the outer annular pitch line 6p. At this time, the inner peripheral connection portions 5u and 5v and the outer peripheral connection portions 6u and 6v are 90 ° out of phase in the annular circumferential direction.
Therefore, similar to the knockout structure 201 shown in the first embodiment, when the inner circumferential pitch lines 5p are opened by breaking the inner peripheral connection portions 5u and 5v, the inner annular pitch lines 5p and the outer annular pitch lines 6p Since the deformation of the annular portion 56 is suppressed, the design around the power cable outlet is prevented from being hindered.
In addition, the number of inner peripheral connection parts (inner peripheral slits) and the number of outer peripheral connection parts (outer peripheral slits) are not limited to those illustrated, and the inner peripheral slit shape and the outer peripheral slit shape are U-shaped. The shape is not limited and may be L-shaped or linear.

[Embodiment 5]
FIG. 6 is a front view showing a knockout structure of an air conditioner outdoor unit according to Embodiment 5 of the present invention. In addition, the same code | symbol is attached | subjected to the part which is the same as that of Embodiment 1, or an equivalent part, and one part description is abbreviate | omitted.
The knockout structure 205 of the air conditioner outdoor unit according to Embodiment 5 is formed on a steel-made outer front panel 120 (see FIG. 1) that forms the casing 110 of the air conditioner outdoor unit 100.

In FIG. 6, the knockout structure 205 has slits formed on a triple hexagonal inner annular pitch line 7p, an intermediate annular pitch line 8p, and an outer annular pitch line 9p having a common center O. That is, the substantially U-shaped inner peripheral slits 7a and 7b are formed on the inner annular pitch line 7p, and the substantially V-shaped intermediate slits 8a and 8b and the linear intermediate slit 8a are formed on the intermediate annular pitch line 8p. Slits 8c and 8d are formed, and substantially V-shaped outer peripheral slits 9a, 9b, 9c, 9d, 9e, and 9f are formed on the outer annular pitch line 9p.
Inner peripheral connection portions 7u and 7v are formed on the inner annular pitch line 7p, intermediate connection portions 8u, 8v, 8w and 8x are formed on the intermediate annular pitch line 8p, and on the outer annular pitch line 9p. The outer peripheral connection portions 9u, 9v, 9w, 9x, 9y, and 9z are formed. At this time, the inner peripheral connection portions 7u, 7v and the intermediate connection portions 8u, 8v, 8w, 8x have a 60 ° phase difference in the annular circumferential direction, and the intermediate connection portions 8u, 8v, 8w, 8x and the outer peripheral connection portions 9u, 9v, 9w, 9x, 9y, 9z have a 30 ° phase difference in the annular circumferential direction.

  Therefore, similarly to the knockout structure 203 shown in the third embodiment, when the inner circumferential connecting portions 7u and 7v are broken to open a range surrounded by the inner annular pitch line 7p, the inner annular pitch line 7p and the intermediate annular line are formed. When the deformation of the annular portion 78 between the pitch line 8p is suppressed and the intermediate connection portions 8u to 8x are broken to open a range surrounded by the intermediate annular pitch line 8p, the intermediate annular pitch line 8p and the outer ring are formed. Since the deformation of the annular portion 89 between the pitch line 9p is suppressed, the design around the power cable outlet is prevented from being hindered.

  As described above, the pitch circles of concentric circles are shown in the first to fourth embodiments, and the square pitch line and the hexagonal pitch line having the same center are shown in the fifth embodiment, but the present invention is not limited to this. Any pitch line may be used. Further, the slits formed on the same pitch circle or pitch line are not limited to those having the same shape, but are line symmetric or rotationally symmetric (when one of the slits is rotated around the center O, the other is It does not have to be overlapped with the slit.

  1a inner circumferential slit, 1b inner circumferential slit, 1p inner circumferential pitch circle, 1u inner circumferential connecting portion, 1v inner circumferential connecting portion, 2a outer circumferential slit, 2b outer circumferential slit, 2p outer circumferential pitch circle, 2u outer circumferential connecting portion, 2v outer circumferential connecting portion 2w outer peripheral connection part, 3a outermost peripheral slit, 3b outermost peripheral slit, 3c outermost peripheral slit, 3p outermost peripheral pitch circle, 3u outermost peripheral connection part, 3v outermost peripheral connection part, 3w outermost peripheral connection part, 5a inner peripheral slit, 5b inner circumferential slit, 5p inner annular pitch wire, 5u inner circumferential connecting portion, 5v inner circumferential connecting portion, 6a outer circumferential slit, 6b outer circumferential slit, 6p outer annular pitch wire, 6u outer circumferential connecting portion, 6v outer circumferential connecting portion, 7a inner circumferential Slit, 7b inner circumferential slit, 7p inner annular pitch line, 7u inner circumferential connecting portion, 7v inner circumferential connecting portion, 8a intermediate slit, 8b intermediate slit 8c intermediate slit, 8d intermediate annular pitch line, 8u intermediate connection, 8v intermediate connection, 8w intermediate connection, 8x intermediate connection, 9a outer slit, 9b outer slit, 9c outer slit, 9d outer slit 9e outer peripheral slit, 9f outer peripheral slit, 9p outer annular pitch line, 9u outer peripheral connecting part, 9v outer peripheral connecting part, 9w outer peripheral connecting part, 9x outer peripheral connecting part, 9y outer peripheral connecting part, 9z outer peripheral connecting part, 12 annular part, 23 Annular part, 78 Annular part, 89 Annular part, 100 Air conditioner outdoor unit, 110 Case, 120 Front panel, 201 Knockout structure (Embodiment 1), 202 Knockout structure (Embodiment 2), 203 Knockout structure (Embodiment 3), 204 Knockout structure (Embodiment 4), 2 5 knockout structure (Embodiment 5).

Claims (6)

A knockout formed by slits formed on a plurality of substantially concentric pitch circles formed on a side surface of the casing of the air conditioner outdoor unit,
A connection portion formed between the slits in a predetermined pitch circle of the plurality of pitch circles, and formed between the slits in a pitch circle located on the outer peripheral side or the inner peripheral side of the pitch circle. A knockout structure for an air conditioner outdoor unit, characterized in that the phase with the connected portion is different in the circumferential direction.   The knockout structure for an air conditioner outdoor unit according to claim 1, wherein a length of the connecting portion in the circumferential direction is longer as it is in a pitch circle on the outer peripheral side.   The knockout structure of an air conditioner outdoor unit according to claim 1, wherein the number of the slits increases as the pitch circle is closer to the outer peripheral side. A knockout formed by slits formed on a plurality of polygonal annular pitch lines formed on a side surface of an air conditioner outdoor unit and having substantially the same center,
A connection portion formed between the slits in a predetermined annular pitch line of the plurality of annular pitch lines, and the slits in the annular pitch line located on the outer peripheral side or inner peripheral side of the annular pitch line. A knockout structure for an air conditioner outdoor unit, characterized in that a phase with a connecting portion formed therebetween differs in an annular circumferential direction.   The knockout structure of an air conditioner outdoor unit according to claim 4, wherein the circumferential length of the connecting portion is longer as it reaches the outer circumferential annular pitch line.   The knockout structure for an air conditioner outdoor unit according to claim 4, wherein the number of the slits increases as the number of slits increases on the outer circumferential annular pitch line.

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