JP6923920B2 - Drainage pump mounting structure - Google Patents

Description

The present invention relates to a mounting structure of a drainage pump in which water is sucked in from a suction port by a rotary blade and discharged from a discharge port. In particular, the present invention relates to a drainage pump mounting structure suitable for quietness during operation.

The air conditioner installed on the ceiling of the room has a drain pan that receives the drain water condensed on the surface of the indoor heat exchanger and a drain pump (drain pump) that discharges the drain water in the drain pan.

FIG. 7 shows an example of the conventional drainage pump described in Patent Document 1. 7 (a) to 7 (c) are a plan view, a front view, and a bottom view of a conventional drainage pump, respectively. The conventional drainage pump 800 has a pump housing 810 that houses the rotary vanes 830. A lower cover 840 is attached to the upper part of the pump housing 810. A motor 880 is provided on the upper part of the lower cover 840, and the motor 880 is covered by the upper cover 850. A mounting portion 852 to be mounted on the air conditioner 900 as a mounted body is provided on the upper portion of the upper cover 850.

Japanese Unexamined Patent Publication No. 2014-107893

When the conventional drainage pump 800 is attached to the air conditioner 900, the attachment portion 852 is fixed by a fixing member 890 such as a screw in a state of being in close contact with the air conditioner 900 in order to prevent the attachment portion 852 from falling off. Therefore, there is a possibility that the vibration accompanying the rotation of the motor 880 propagates from the mounting portion 852 to the air conditioner 900 to generate noise.

The present invention has been made in view of the above problems, and an object of the present invention is to suppress the propagation of the vibration of the motor to the attached body to which the drainage pump is attached, and to achieve quietness during operation. The purpose is to provide a mounting structure for a drainage pump.

In order to solve the above problems, the mounting structure of the drainage pump of the present invention includes a drainage pump and at least one mounting means for mounting the drainage pump on a ceiling plate as an attached body, and attaches the drainage pump to the ceiling. It is a mounting structure of a drainage pump arranged on the lower side of the plate, and the drainage pump is housed in a rotary vane, a housing for accommodating the rotary vane, a cover attached to the upper part of the housing, and the cover. The mounting means includes a mounting member, the mounting member has a tip portion on which a downward surface is formed, and the tip portion of the mounting member has a tip portion formed on the upper end side. The downward surface is hooked on the upper edge of the through hole while being inserted into the through hole provided in the ceiling plate, and in the drainage pump, the cover is spaced from the ceiling plate by the mounting member. It is characterized in that it is attached so as to hang with a degree of freedom of movement without being fixed to the ceiling plate without being vacated.

In the present invention, it is preferable that the drainage pump is mounted by the mounting member so as to hang down from the ceiling plate.

In the present invention, it is preferable that the drainage pump is attached to the ceiling plate by its own weight so as to be suspended by the attachment member.

In the present invention, the destination end of the mounting member has a wide portion bulging outward, the through-hole of the ceiling plate, an insertion portion to which the destination end of the attachment member having an insertion possible shapes, It is preferable to have a slit portion which is connected to the insertion portion and has a width smaller than the width of the wide portion.

In the present invention, the destination end of the mounting member, and having a wide portion bulging outward, slits are formed so as to constitute a plurality of elastic pieces, the plurality of elastic pieces, the center of the destination end It is preferable to insert it into the through hole of the ceiling plate in a state of being elastically deformed to the side.
In the present invention, the mounting member is a separate body from the cover, and the drainage pump is mounted on the ceiling plate by engaging the base end portion on the lower end side of the mounting member with the cover. Is preferable.

In the present invention, it is preferable that the base end portion of the mounting member is inserted into the through hole provided in the cover and is hooked on the lower edge portion of the through hole.

In the present invention, the base end portion of the mounting member has a wide portion that bulges outward, and a slit is formed so as to form a plurality of elastic pieces, and the plurality of elastic pieces are the center of the base end portion. It is preferable that the cover is inserted into the through hole in a state of being elastically deformed to the side.

In the present invention, the attachment member is preferably be found provided on said cover integrally.

In the present invention, the mounting member preferably has a lower flexural modulus than at least one of the ceiling plate and the cover.

According to the present invention, in the drainage pump, the cover is attached to the ceiling plate at a distance from the ceiling plate by the attachment member. From what has been thus, since the cover of the drainage pump is not in contact with the ceiling plate, it can be avoided directly vibrate from the cover to the ceiling plate propagates. Therefore, it is possible to suppress the propagation of the vibration of the motor to the ceiling plate to which the drainage pump is attached, and it is possible to achieve quietness during operation.

It is a figure which shows the mounting structure of the drainage pump which concerns on 1st Example of this invention. It is a front view including a partial cross section of the drainage pump of FIG. It is a figure explaining the mounting structure of the drainage pump of FIG. It is a figure which shows the mounting structure of the drainage pump which concerns on 2nd Example of this invention. It is a figure explaining the mounting structure of the drainage pump of FIG. It is a figure explaining the mounting structure of the drainage pump which concerns on 3rd Example of this invention. It is a figure which shows the mounting structure of the conventional drainage pump.

The drainage pump mounting structure according to the present invention described below includes a drainage pump and at least one mounting means for mounting the drainage pump on the mounted body, and the drainage pump is arranged under the mounted body. do. The drainage pump has a rotary vane, a housing for accommodating the rotary vane, a cover attached to the upper portion of the housing, and a motor housed in the cover for rotating the rotary vane. The drainage pump is characterized in that the cover is attached to the attached body at a distance from the attached body by the attaching means.

(First Example)
Hereinafter, the mounting structure of the drainage pump according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3. As an example, the drainage pump according to the first embodiment is for discharging the drain water collected in the drain pan of the indoor unit of the air conditioner to the outside. Of course, the use of this drainage pump is not limited to the discharge of drain water, and can be used for discharging and pumping various liquids. The same applies to the second embodiment and the third embodiment described later.

FIG. 1 is a diagram showing a mounting structure of a drainage pump according to a first embodiment of the present invention. 1 (a) to 1 (c) are a plan view, a front view, and a bottom view showing the attached body in order. FIG. 2 is a front view including a partial cross section of the drainage pump of FIG. 1, and more specifically, is a front view including a partial cross-sectional view of the lower part of the drainage pump cut along a plane passing through the axis of the discharge pipe. FIG. 3 is a diagram illustrating a mounting structure of the drainage pump of FIG. FIG. 3A is a plan view of the attached body as viewed from above, and the drainage pump is shown by a broken line. FIG. 3B is an enlarged view of the vicinity of the through hole of the attached body (the elliptical portion of the alternate long and short dash line in FIG. 3A). FIG. 3 (c) is an enlarged cross-sectional view taken along the line AA of FIG. 3 (b). In the description of the first embodiment, "up and down" coincides with the vertical direction of FIGS. 1 (a) and 2.

The first embodiment has a structure in which the drainage pump 1 is attached to the ceiling plate 61 of the air conditioner 60 as an attached body by an attachment member 70 as an attachment means.

As shown in FIGS. 1 and 2, the drainage pump 1 has a housing 10, a cover 20, a rotary blade 30, and a motor 40. In this embodiment, the housing 10, the cover 20, and the rotary blade 30 are made of synthetic resin.

The housing 10 integrally includes a main body 11, a suction pipe 16, and a discharge pipe 18. The main body portion 11 has a bottom wall portion 12 having an inverted truncated cone shape, and a peripheral wall portion 13 connected to the outer peripheral edge of the bottom wall portion 12. The suction pipe 16 extends downward from the center of the bottom wall portion 12 and has a suction port 17 facing downward. The discharge pipe 18 has a discharge port 19 extending laterally (to the right in FIG. 1B) from the peripheral wall portion 13 and facing sideways. In this embodiment, the discharge pipe 18 extends linearly to the side, but is not limited to this. For example, the discharge port may be formed in a substantially L-shape or an arc shape facing upward, and may be provided on the side portion of the main body portion 11. A discharge pipe inlet 15 serving as an inlet to the discharge pipe 18 is provided on the inner peripheral surface 14 of the peripheral wall portion 13 of the main body portion 11.

The housing 10 has a space in which the rotary vanes 30 are arranged, and the pump chamber 5 is formed (defined) by surrounding the space together with the cover 20.

The cover 20 has a substantially cylindrical lower cover 21 and a lid-shaped upper cover 22 that closes the upper end of the lower cover 21. The lower end of the lower cover 21 is fitted to the upper opening of the main body 11 of the housing 10 and is attached to the housing 10 by the snap-fit mechanism 23. The upper cover 22 is attached to the upper end of the lower cover 21 via a locking portion 24.

A plurality of mounting portions 25 for mounting the drainage pump 1 to the air conditioner 60 are integrally provided on the upper surface 22a of the upper cover 22. The mounting portion 25 has a strut portion 26 extending diagonally upward and a flat plate portion 27 extending in the horizontal direction from the tip of the strut portion 26. When viewed from the vertical direction, the drainage pump 1 has a flat plate portion 27 protruding outward from the projected shapes of the lower cover 21 and the upper cover 22, and the outermost end thereof is inscribed in a virtual circle P1 having a diameter L1. A notch 28 is provided at the outer end of the flat plate portion 27.

The notch 28 has a shape in which the width of the portion recessed from the entrance is wider than the width of the entrance when viewed from the vertical direction. In this embodiment, the width of the entrance of the notch 28 is smaller than the diameter of the pillar portion 71 of the mounting member 70, which will be described later. Further, the width of the portion recessed from the entrance of the notch 28 is larger than the diameter of the pillar portion 71 of the mounting member 70 and smaller than the diameter of the base end portion 73. The notch 28 penetrates the flat plate portion 27 of the mounting portion 25 in the vertical direction, and corresponds to a through hole provided in the cover 20.

The rotary blade 30 is rotatably housed in the pump chamber 5. The rotary blade 30 has a shaft portion 31, a large diameter blade 33, a small diameter blade 34, an auxiliary blade 35, and an annular member 36. The rotary blade 30 has a plurality of large-diameter blades 33, small-diameter blades 34, and auxiliary blades 35 formed in a substantially flat plate shape, and in this embodiment, each of the rotary blades 30 has four blades. A configuration in which the auxiliary blade 35 is omitted may be adopted.

The shaft portion 31 is formed in a columnar shape, and a mounting hole 32 into which the drive shaft 41 of the motor 40 is fitted is provided at the upper end portion. The plurality of large-diameter blades 33 extend in the radial direction from the outer peripheral surface of the shaft portion 31. The plurality of small diameter blades 34 are connected to the inner portion in the radial direction at the lower end of each large diameter blade 33. The auxiliary blades 35 are arranged between the large-diameter blades 33 adjacent to each other in the circumferential direction and extend in the radial direction. The annular member 36 has an inverted truncated cone shape and is provided with an opening 37 in the center. The annular member 36 connects the tapered portions at the lower ends of the large-diameter blades 33 and the auxiliary blades 35 to each other. The large-diameter blade 33 and the auxiliary blade 35 are arranged in the pump chamber 5 so that their respective outer ends in the radial direction face the inner peripheral surface 14 of the peripheral wall portion 13 of the housing 10. The small diameter blade 34 passes through the opening 37 of the annular member 36 and is inserted into the suction pipe 16.

The motor 40 is housed in the cover 20. The shaft portion 31 of the rotary blade 30 is inserted into the through hole 29 provided in the center of the cover 20, and the drive shaft 41 of the motor 40 is fitted into the mounting hole 32 of the shaft portion 31.

The air conditioner 60 has a drain pan (not shown) that receives the drain water condensed on the surface of the indoor heat exchanger, and the drain pump 1 is attached to a ceiling plate 61 provided above the drain pan at intervals. As shown in FIG. 3A, the ceiling plate 61 is provided with a plurality of through holes 62. In this embodiment, three through holes 62 are provided.

The through hole 62 has a circular insertion portion 63 and a slit portion 64 connected to the insertion portion 63. The insertion portion 63 has a diameter larger than the diameter of the tip portion 72 of the mounting member 70. The insertion portion 63 may have a shape that allows the tip portion 72 of the mounting member 70 to be inserted. The slit portion 64 has a width smaller than the diameter of the tip portion 72 (that is, the width of the tip portion 72) and larger than the diameter of the pillar portion 71. In this embodiment, the center of the insertion portion 63 of each through hole 62 is arranged on the virtual circle Q1. Further, the center line of the slit portion 64 of each through hole 62 is also arranged on the virtual circle Q1.

The mounting member 70 is formed in a columnar shape, and has a columnar pillar portion 71, a circular flange-shaped tip portion 72 provided at the upper end (one end portion) of the pillar portion 71, and a lower end portion of the pillar portion 71. It has a circular flange-shaped base end portion 73 provided at (the other end portion). The diameter of the pillar portion 71 is smaller than the width of the portion recessed from the entrance of the notch 28 and the width of the slit portion 64 of the through hole 62 of the ceiling plate 61. The diameter of the tip portion 72 is larger than the width of the slit portion 64. The diameter of the base end portion 73 is larger than the width of the portion recessed from the entrance of the notch 28. The tip end portion 72 and the base end portion 73 may be a wide portion that bulges outward in the radial direction from the pillar portion 71. In this embodiment, three mounting members 70 are provided.

In this embodiment, the drainage pump 1 is attached to the ceiling plate 61 by its own weight by the attachment member 70 so as to hang (hang). Here, "hanging by its own weight" means that it hangs only by its own weight without receiving other force. Therefore, for example, in a configuration in which the drainage pump 1 is hung in a state of being connected to a drain pan or the like by a wire so as to regulate excessive runout, the drainage pump 1 is subjected to a pulling force by the wire, so that the drainage pump 1 receives "self-weight". Not included in "hanging by". Of course, such a configuration in which the runout of the drainage pump 1 is regulated by a wire or the like may be adopted.

The mounting member 70 is separate from the ceiling plate 61 and the cover 20. The drainage pump 1 is mounted so as to hang down from the ceiling plate 61 by locking the upper end of the mounting member 70 to the ceiling plate 61 and locking the lower end to the cover 20.

Specifically, the tip portion 72 of the mounting member 70 is inserted into the through hole 62 provided in the ceiling plate 61, and the annular downward surface 72a is hooked on the edge portion 62a of the through hole 62 so as to be in a hanging state. have. The base end portion 73 of the mounting member 70 is inserted into the notch 28 provided in the flat plate portion 27 of the mounting portion 25 of the cover 20, and is inserted into the edge portion 28a of the notch 28 so that the flat plate portion 27 is in a hanging state. It has an annular upward surface 73a to be hooked. The tip portion 72 may have a flange shape other than a circular shape, and the downward surface 72a may have an annular shape other than an annular shape. The same applies to the base end portion 73.

The mounting member 70 has a smaller flexural modulus than the ceiling plate 61 and the cover 20. The mounting member 70 preferably has a lower flexural modulus than at least one of the ceiling plate 61 and the cover 20. By doing so, the vibration propagating from the cover 20 to the ceiling plate 61 is effectively damped in the mounting member 70.

Next, a method of mounting the drainage pump 1 on the ceiling plate 61 of the air conditioner 60 by using the mounting member 70 will be described.

First, the mounting member 70 is mounted on the flat plate portions 27 of the plurality of mounting portions 25 included in the drainage pump 1. Specifically, the pillar portion 71 of the mounting member 70 is pushed into the notch 28 provided in each flat plate portion 27 from the entrance. As a result, the pillar portion 71 of the mounting member 70 is held in a state of being inserted into the notch 28.

Next, the tip portion 72 of the mounting member 70 mounted on each flat plate portion 27 is inserted into the insertion portion 63 of the through hole 62 provided in the ceiling plate 61 of the air conditioner 60. Then, the drainage pump 1 is rotated in a counterclockwise direction when viewed from above, and the pillar portion 71 of the mounting member 70 is slid and moved so as to enter the slit portion 64 of the through hole 62.

As a result, the downward surface 72a of the tip end portion 72 of the mounting member 70 is caught by the edge portion 62a of the through hole 62 and becomes a hanging state (hanging state). Further, the upward surface 73a of the base end portion 73 of the mounting member 70 is caught by the edge portion 28a of the notch 28, and the flat plate portion 27 is in a hanging state. In this way, the drainage pump 1 is attached to the ceiling plate 61 of the air conditioner 60 in a hanging state by the attachment member 70. At this time, the cover 20 (flat plate portion 27) of the drainage pump 1 and the ceiling plate 61 are arranged so as to face each other with a gap D. The interval D is preferably 0.5 mm to 100 mm, more preferably 1 mm to 50 mm.

As described above, according to the present embodiment, in the drainage pump 1, the cover 20 is attached to the ceiling plate 61 at intervals from the ceiling plate 61 of the air conditioner 60 by the attachment member 70. Since this is done, since the cover 20 of the drainage pump 1 does not come into contact with the ceiling plate 61, it is possible to prevent the vibration from propagating directly from the cover 20 to the ceiling plate 61. Therefore, it is possible to suppress the propagation of the vibration of the motor 40 to the ceiling plate 61 to which the drainage pump 1 is attached, and it is possible to achieve quietness during operation.

Further, the drainage pump 1 is attached to the ceiling plate 61 by its own weight by the attachment member 70. By doing so, the drainage pump 1 is not fixed, and the drainage pump 1 hangs from the ceiling plate 61 due to its own weight with a degree of freedom of movement. Therefore, since the drainage pump 1 and the ceiling plate 61 are loosely connected, it is possible to further suppress the propagation of the vibration of the motor 40 to the ceiling plate 61 to which the drainage pump 1 is attached, and to improve the quietness during operation. be able to. Further, since the drainage pump 1 hangs from the ceiling plate 61 with a degree of freedom of movement, when the motor 40 rotates, it can autonomously balance and maintain a posture with less vibration.

Further, the mounting member 70 is a separate body from the cover 20. The drainage pump 1 is attached to the ceiling plate 61 by locking the tip 72 at the upper end of the mounting member 70 to the ceiling plate 61 and locking the base end 73 at the lower end to the cover 20. The tip portion 72 of the mounting member 70 is inserted into the through hole 62 provided in the ceiling plate 61 and is hooked on the edge portion 62a of the through hole 62. The base end portion 73 of the mounting member 70 is inserted into the notch 28 provided in the cover 20 and is hooked on the edge portion 28a of the notch 28. By doing so, the drainage pump 1 can be attached to the ceiling plate 61 with a relatively simple configuration.

Further, the tip portion 72 of the mounting member 70 is a wide portion that bulges outward. The through hole 62 of the ceiling plate 61 has an insertion portion 63 having a shape through which the tip portion 72 of the mounting member 70 can be inserted, and a slit portion 64 connected to the insertion portion 63 and having a width smaller than the width of the tip portion 72. doing. By doing so, the drainage pump 1 can be easily moved to the ceiling plate 61 by inserting the tip portion 72 of the mounting member 70 into the insertion portion 63 of the through hole 62 and then sliding it so as to enter the slit portion 64. Can be installed.

(Second Example)
Hereinafter, the mounting structure of the drainage pump according to the second embodiment of the present invention will be described with reference to FIGS. 4 and 5.

FIG. 4 is a diagram showing a mounting structure of a drainage pump according to a second embodiment of the present invention. 4 (a) to 4 (c) are a plan view, a front view, and a bottom view of the attached body in this order. FIG. 5 is a diagram illustrating a mounting structure of the drainage pump of FIG. FIG. 5A is a plan view of the attached body as viewed from above, and the drainage pump is shown by a broken line. FIG. 5B is an enlarged view of the vicinity of the through hole of the attached body (the elliptical portion of the alternate long and short dash line in FIG. 5A). FIG. 5 (c) is an enlarged cross-sectional view taken along the line BB of FIG. 5 (b). In the second embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The second embodiment has a structure in which the drainage pump 1A is attached to the ceiling plate 61 of the air conditioner 60 as the attached body by the attachment member 80. In the second embodiment, based on the configuration of the first embodiment, the drainage pump 1A in which the mounting portion 25 is omitted is adopted, and the mounting member 80 in which the base end portion 83 is integrally mounted on the upper surface 22a of the upper cover 22 is adopted. Is adopted.

The drainage pump 1A shown in FIGS. 4 and 5 has the same configuration as the drainage pump 1 except that the attachment portion 25 is omitted in the drainage pump 1 of the first embodiment.

The mounting member 80 is formed in a columnar shape, and has a columnar column portion 81 and a circular flange-shaped tip portion 82 provided at the upper end of the column portion 81. Further, the base end portion 83 of the mounting member 80 is provided integrally with the upper cover 22 of the drainage pump 1A. The diameter of the pillar portion 81 is smaller than the width of the slit portion 64 of the through hole 62 of the ceiling plate 61. The diameter of the tip portion 82 is larger than the width of the slit portion 64. The tip portion 82 may be a wide portion that bulges outward in the radial direction from the pillar portion 81. In this embodiment, three mounting members 80 are provided.

The tip portion 82 of the mounting member 80 has an annular downward surface 82a that is inserted into the through hole 62 provided in the ceiling plate 61 and is hooked on the edge portion 62a of the through hole 62 so as to be in a hanging state. .. The tip portion 82 may have a flange shape other than a circular shape, and the downward surface 82a may have an annular shape other than an annular shape.

The mounting member 80 has a smaller flexural modulus than the ceiling plate 61 and the cover 20. The mounting member 80 preferably has a lower flexural modulus than at least one of the ceiling plate 61 and the cover 20. By doing so, the vibration propagating from the cover 20 to the ceiling plate 61 is effectively damped in the mounting member 80.

In the second embodiment, the center of the insertion portion 63 of each through hole 62 is arranged on the virtual circle Q2. Further, the center line of the slit portion 64 of each through hole 62 is also arranged on the virtual circle Q2. The virtual circle Q2 is included in the projected shapes of the lower cover 21 and the upper cover 22 when viewed from the vertical direction. Further, in the drainage pump 1A, when viewed from the vertical direction, the outermost end of the cover 20 is inscribed in the virtual circle P2 having a diameter L2 smaller than the diameter L1 of the virtual circle P1 of the first embodiment.

The tip 82 of the mounting member 80 is mounted on the ceiling plate 61 of the air conditioner 60 by the same mounting method as the tip 72 of the mounting member 70 of the first embodiment. At this time, the cover 20 (upper surface 22a of the upper cover 22) of the drainage pump 1A and the ceiling plate 61 are arranged so as to face each other with a gap D. The interval D is preferably 0.5 mm to 100 mm, more preferably 1 mm to 50 mm.

The second embodiment also has the same effect as that of the first embodiment. Further, since the mounting portion 25 is omitted, the configuration can be made more compact.

(Third Example)
Hereinafter, the mounting structure of the drainage pump according to the third embodiment of the present invention will be described with reference to FIG.

FIG. 6 is a diagram illustrating a mounting structure of a drainage pump according to a third embodiment of the present invention. FIG. 6A is a plan view of the attached body as viewed from above, and the drainage pump is shown by a broken line. FIG. 6B is an enlarged view of the vicinity of the through hole of the attached body (the elliptical portion of the alternate long and short dash line in FIG. 6A). FIG. 6 (c) is an enlarged cross-sectional view taken along the line CC of FIG. 6 (b). In the description of the third embodiment, "up and down" corresponds to the front-back direction of the paper surface in FIG. 6 (a) and coincides with the vertical direction in FIG. 6 (c). In the third embodiment, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The third embodiment has a structure in which the drainage pump 1 is attached to the ceiling plate 61 of the air conditioner 60 as the attached body by the attachment member 90. In the third embodiment, based on the configuration of the first embodiment, a circular through hole 65 is adopted in the ceiling plate 61, and a mounting member 90 in which the tip portion 92 and the base end portion 93 are elastically deformable in the radial direction is provided. It is adopted.

As shown in FIG. 6A, the ceiling plate 61 of the air conditioner 60 is provided with a plurality of through holes 65. In the third embodiment, three through holes 65 are provided. The through hole 65 is formed in a circular shape. The through hole 65 has a diameter smaller than the diameter of the tip portion 92 of the mounting member 90.

The mounting member 90 is formed in a columnar shape, and has a columnar pillar portion 91, a circular flange-shaped tip portion 92 provided at the upper end (one end portion) of the pillar portion 91, and a lower end portion of the pillar portion 91. It has a circular flange-shaped base end portion 93 provided at (the other end portion). The diameter of the pillar portion 91 is smaller than the width of the portion recessed from the entrance of the notch 28 and the diameter of the through hole 65 of the ceiling plate 61. The diameter of the tip portion 92 is larger than the diameter of the through hole 65. The diameter of the base end portion 93 is larger than the width of the portion recessed from the entrance of the notch 28. The tip end portion 92 and the base end portion 93 may be wide portions that bulge outward in the radial direction from the pillar portion 91. In this embodiment, three mounting members 90 are provided.

The mounting member 90 includes a slit 94 extending in the radial direction and having a depth extending from the tip portion 92 to the pillar portion 91, and a slit 95 extending in the radial direction and having a depth extending from the base end portion 93 to the pillar portion 91. Have. The slit 94 and the slit 95 are formed at the tip end portion 92 and the base end portion 93 so as to form a plurality of elastic pieces that are elastically deformable in the radial direction.

The tip portion 92 of the mounting member 90 has a downward surface 92a that is inserted into the through hole 65 provided in the ceiling plate 61 and is hooked on the edge portion 65a of the through hole 65 so as to be in a hanging state. The base end portion 93 of the mounting member 90 is inserted into the notch 28 provided in the flat plate portion 27 of the mounting portion 25 of the cover 20, and is inserted into the edge portion 28a of the notch 28 so that the flat plate portion 27 is in a hanging state. It has an upward surface 93a to be caught.

The mounting member 90 has a smaller flexural modulus than the ceiling plate 61 and the cover 20. The mounting member 90 preferably has a lower flexural modulus than at least one of the ceiling plate 61 and the cover 20. By doing so, the vibration propagating from the cover 20 to the ceiling plate 61 is effectively damped in the mounting member 90.

Next, a method of mounting the drainage pump 1 on the ceiling plate 61 of the air conditioner 60 using the mounting member 90 will be described.

First, the mounting member 90 is mounted on the flat plate portions 27 of the plurality of mounting portions 25 included in the drainage pump 1. Specifically, the pillar portion 91 of the mounting member 90 is pushed into the notch 28 provided in each flat plate portion 27 from the entrance. Alternatively, a plurality of elastic pieces of the base end portion 93 of the mounting member 90 are elastically deformed so as to be reduced toward the center side, inserted into the notch 28 from above, and then restored. Instead of the notch 28, a circular through hole may be provided in the flat plate portion 27. As a result, the pillar portion 91 of the mounting member 90 is held in a state of being inserted into the notch 28.

Next, the tip portion 92 of the mounting member 90 mounted on each flat plate portion 27 is inserted into the through hole 65 provided in the ceiling plate 61 of the air conditioner 60. Specifically, a plurality of elastic pieces of the tip portion 92 of the mounting member 90 are elastically deformed so as to be reduced toward the center side, inserted into the through hole 65 from below, and then restored.

As a result, the downward surface 92a of the tip end portion 92 of the mounting member 90 is caught by the edge portion 65a of the through hole 65 and is in a hanging state. Further, the upward surface 93a of the base end portion 93 of the mounting member 90 is caught by the edge portion 28a of the notch 28, and the flat plate portion 27 is in a hanging state. In this way, the drainage pump 1 is attached to the ceiling plate 61 of the air conditioner 60 in a hanging state by the attachment member 90. At this time, the cover 20 (flat plate portion 27) of the drainage pump 1 and the ceiling plate 61 are arranged so as to face each other with a gap D. The interval D is preferably 0.5 mm to 100 mm, more preferably 1 mm to 50 mm.

The third embodiment also has the same effect as that of the first embodiment.

In particular, in the third embodiment, the tip portion 92 of the mounting member 90 is a wide portion that bulges outward, and slits are formed so as to form a plurality of elastic pieces. The tip portion 92 is inserted into the through hole 65 of the ceiling plate 61 in a state where a plurality of elastic pieces are elastically deformed toward the center side. Further, the base end portion 93 of the mounting member 90 is a wide portion that bulges outward, and slits are formed so as to form a plurality of elastic pieces. The base end portion 93 may be inserted into the notch 28 of the cover 20 in a state where a plurality of elastic pieces are elastically deformed toward the center. Therefore, the drainage pump 1 can be easily attached to the ceiling plate 61.

In the second embodiment described above, instead of the tip 82 of the mounting member 80 and the through hole 62 of the ceiling plate 61, as shown in the third embodiment, the tip 92 (a plurality of elastic pieces) of the mounting member 90 is used. A slit 94 is formed so as to form a structure) and a structure similar to that of the through hole 65 may be adopted.

Further, in each of the above-described embodiments, the configuration has three mounting members (mounting means), but it is sufficient to have at least one mounting member. In the configuration having only one mounting member, the portion corresponding to the center of gravity of the drainage pump is mounted on the mounted body by the mounting member.

Further, in each of the above-described embodiments, the configuration in which the drainage pump 1 is attached so as to hang (hang) from the ceiling plate 61 has been described. However, in addition to these, for example, in the first embodiment, the attachment member 70 The tip portion 72 may be fixed to the ceiling plate 61 with an adhesive or the like. The base end portion 73 of the mounting member 70 may be fixed to the cover 20 (flat plate portion 27) with an adhesive or the like. The diameter of the pillar portion 71 of the mounting member 70 may be the same as or slightly larger than the width of the slit portion 64. The diameter of the pillar portion 71 of the mounting member 70 may be the same as or slightly larger than the width of the portion recessed from the entrance of the notch 28. The same applies to the second embodiment and the third embodiment.

Although examples of the present invention have been described above, the present invention is not limited to these examples. As long as the gist of the present invention is not deviated from the above-mentioned examples, those skilled in the art appropriately adding, deleting, or changing the design, or combining the features of the examples as appropriate are also present inventions. Is included in the range of.

(First Example)
1, 1A ... drainage pump, 5 ... pump chamber, 10 ... housing, 11 ... main body, 12 ... bottom wall, 13 ... peripheral wall, 14 ... inner peripheral surface, 15 ... discharge pipe inlet, 16 ... suction pipe, 17 ... Suction port, 18 ... Discharge pipe, 19 ... Discharge port, 20 ... Cover, 21 ... Lower cover, 22 ... Upper cover, 22a ... Upper surface of upper cover, 23 ... Snap fit mechanism, 24 ... Locking part, 25 ... Mounting Part, 26 ... Strut part, 27 ... Flat plate part, 28 ... Notch, 28a ... Notch edge, 29 ... Through hole, 30 ... Rotating blade, 31 ... Shaft part, 32 ... Mounting hole, 33 ... Large diameter blade , 34 ... small diameter blade, 35 ... auxiliary blade, 36 ... annular member, 37 ... opening, 40 ... motor, 41 ... drive shaft, 60 ... air conditioner, 61 ... ceiling plate, 62 ... through hole, 62a ... through hole Edge portion, 63 ... Insertion portion, 64 ... Slit portion, 70 ... Mounting member, 71 ... Pillar portion, 72 ... Tip portion, 72a ... Downward surface, 73 ... Base end portion, 73a ... Upward surface (second embodiment)
80 ... Mounting member, 81 ... Pillar portion, 82 ... Tip portion, 82a ... Downward surface, 83 ... Base end portion (third embodiment)
65 ... Through hole, 65a ... Through hole edge, 90 ... Mounting member, 91 ... Pillar, 92 ... Tip, 92a ... Downward surface, 93 ... Base end, 93a ... Upward surface

Claims (10)

A drainage pump mounting structure comprising a drainage pump and at least one mounting means for mounting the drainage pump on a ceiling plate as an attached body, and arranging the drainage pump under the ceiling plate.
The drainage pump has a rotary vane, a housing for accommodating the rotary vane, a cover attached to the upper portion of the housing, and a motor housed in the cover for rotating the rotary vane.
The mounting means includes a mounting member.
The mounting member has a tip portion on which a downward surface is formed on the upper end side.
The tip portion of the mounting member is inserted into a through hole provided in the ceiling plate, and the downward surface is hooked on the upper edge portion of the through hole.
The drainage pump mounting structure is characterized in that the cover is mounted by the mounting member so as to hang with a degree of freedom of movement without being fixed to the ceiling board at a distance from the ceiling board. .. The drainage pump mounting structure according to claim 1, wherein the drainage pump is mounted by the mounting member so as to hang down from the ceiling plate. The drainage pump mounting structure according to claim 2, wherein the drainage pump is mounted on the ceiling plate by its own weight by the mounting member. The tip of the mounting member has a wide portion that bulges outward.
The through hole of the ceiling plate has an insertion portion having a shape through which the tip portion of the mounting member can be inserted, and a slit portion connected to the insertion portion and having a width smaller than the width of the wide portion. The mounting structure for a drainage pump according to any one of claims 1 to 3, wherein the drainage pump is attached. A drainage pump mounting structure comprising a drainage pump and at least one mounting means for mounting the drainage pump on a ceiling plate as an attached body, and arranging the drainage pump under the ceiling plate.
The drainage pump has a rotary vane, a housing for accommodating the rotary vane, a cover attached to the upper portion of the housing, and a motor housed in the cover for rotating the rotary vane.
The mounting means includes a mounting member.
The mounting member has a tip portion on which a downward surface is formed on the upper end side.
The tip portion of the mounting member is inserted into a through hole provided in the ceiling plate, and the downward surface is hooked on the upper edge portion of the through hole.
The drainage pump is attached by the mounting member so that the cover hangs from the ceiling plate at a distance from the ceiling plate with a degree of freedom of movement.
The tip portion of the mounting member has a wide portion that bulges outward, and a slit is formed so as to form a plurality of elastic pieces.
Wherein the plurality of elastic pieces, the tip mounting structure of the discharge water pump to the center side while being elastically deformed you being inserted into the through hole of the ceiling plate of. The mounting member is separate from the cover and
The drainage pump according to any one of claims 1 to 5, wherein the drainage pump is mounted on the ceiling plate by locking the base end portion on the lower end side of the mounting member to the cover. The mounting structure of the drainage pump described. The attachment of the drainage pump according to claim 6, wherein the base end portion of the attachment member is inserted into a through hole provided in the cover and is hooked on a lower edge portion of the through hole. structure. The base end portion of the mounting member has a wide portion that bulges outward, and slits are formed so as to form a plurality of elastic pieces.
The attachment structure for a drainage pump according to claim 7, wherein the plurality of elastic pieces are inserted into the through holes of the cover in a state of being elastically deformed toward the center side of the base end portion. The drainage pump mounting structure according to any one of claims 1 to 5, wherein the mounting member is provided integrally with the cover. The drainage pump mounting structure according to any one of claims 1 to 9, wherein the mounting member has a flexural modulus smaller than that of at least one of the ceiling plate and the cover.

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