JP3215477U - Drainage motor with waterproof effect on drive shaft - Google Patents

Abstract

A drainage motor having a waterproof effect on a drive shaft is provided. A drain motor 10 having a waterproof effect on a drive shaft includes a housing 11, a motor 21, a drain blade 31 and a water blocking cap 41. The housing has a drain chamber 13 at the bottom. The motor has a drive shaft 25. The drainage blade is located in the drainage chamber and has a mandrel 33. The tip of the mandrel is exposed to the upper drain chamber. The drive shaft is inserted into the mandrel. The mandrel has a first end surface and a first contact portion. The water blocking cap has an annular wing 43 formed extending from the peripheral edge, and a first cylindrical sleeve 45 whose opening is directed downward. The first cylindrical sleeve has a first bottom surface and a first peripheral wall surface. The drive shaft passes through the water blocking cap. The first cylindrical sleeve has a first bottom surface in contact with the first end surface of the mandrel, and a first peripheral wall surface is in close contact with the first contact portion of the mandrel. By the technical means described above, water can be prevented from flowing into the motor along the drive shaft of the motor. [Selection] Figure 2

Description

  The present invention relates to a drain motor, and more particularly, to a drain motor having a waterproof effect on a drive shaft.

  When the operation of the drain motor used in the known cooling system is stopped, the water remaining in the drain motor is circulated to the drain chamber. If the impact force generated by the circulation is too great, water droplets are generated and flow into the motor, which easily damages the motor.

  Patent Document 1 discloses a waterproof motor that prevents water from entering the electric motor. In this plan, the pump chamber 52 has the cap 30 and the flow guide plate 15 at the opening. The flow guide plate 15 is fitted into the concave groove 212 at the upper end of the shaft 210. The flow guide plate 15 blocks water splashing and jumping to the motor, and can prevent water from entering the motor and damaging the motor.

  Patent document 2 has posted the drainage pump which has a filtration function. In this plan, since the drainage pump has the water blocking ring 5 on the motor shaft 7, the water is prevented from flowing into the electric machine 6 from the opening above the pump chamber 3, and the water jumping to the motor is blocked. You can avoid getting into the motor and damaging it.

  In Patent Document 1, since the flow guide plate is connected to the upper end of the blade shaft by a fitting method, water flows through the gap between the flow guide plate and the concave groove and flows into the motor along the motor drive shaft. To do.

  In Patent Document 2, since the water blocking ring is attached to the motor shaft, water flows through the gap between the water blocking ring and the motor shaft and flows into the motor along the motor shaft.

  As described above, Patent Document 1 and Patent Document 2 have room for improvement in terms of suppressing water from flowing into the motor along the drive shaft of the motor.

Japanese JP2009026431 Chinese CN26554915 (Y) publication

  The main object of the present invention is to provide a drain motor having a waterproof effect on the drive shaft that can prevent water from flowing into the motor along the drive shaft of the motor.

  In order to solve the above-described problem, a drain motor having a waterproof effect on a drive shaft includes a housing, a motor, drain blades, and a water blocking cap. The housing has a drain chamber located at the bottom and a first perforation formed in the top of the drain chamber. The motor is mounted on the housing so as to be located above the drain chamber and has a second perforation and a drive shaft at the bottom. The end of the drive shaft passes through the second bore. Its characteristics are as follows. The drainage blade is located in the drainage chamber and has a mandrel. The tip of the mandrel is exposed to the upper drain chamber. The end of the drive shaft is inserted into the tip of the mandrel. The mandrel has a first end surface formed at the tip, and a first contact portion formed by extending from the first end surface to a predetermined distance below the peripheral surface of the body of the mandrel. The water blocking cap has an annular wing formed extending from the peripheral edge of the top, and a first cylindrical sleeve with the opening facing downward. The first cylindrical sleeve has a first bottom surface, a first peripheral wall surface, and a third perforation formed in the first bottom surface. The drive shaft passes through the third bore of the first cylindrical sleeve, thereby positioning the water blocking cap between the first bore of the housing and the mandrel of the drainage blade. The first cylindrical sleeve covers one end of the mandrel, the first bottom surface is in contact with the first end surface of the mandrel, and the first peripheral wall surface is in close contact with the first contact portion of the mandrel.

  By the technical means described above, the present invention can suppress water from flowing into the motor along the drive shaft of the motor.

1 is a perspective view showing a drain motor having a waterproof effect on a drive shaft according to a first embodiment of the present invention. It is sectional drawing which shows a part of drainage motor which has a waterproof effect in the drive shaft by 1st Embodiment of this invention. 1 is an enlarged view showing a part of a drain motor having a waterproof effect on a drive shaft according to a first embodiment of the present invention; FIG. It is sectional drawing which shows a part of drain motor which has a waterproof effect in the drive shaft by 2nd Embodiment of this invention. It is sectional drawing which shows a part of drain motor which has a waterproof effect in the drive shaft by 3rd Embodiment of this invention. It is an enlarged view showing a part of a drain motor having a waterproof effect on a drive shaft according to a third embodiment of the present invention.

  Hereinafter, a drain motor having a waterproof effect on a drive shaft according to the present invention will be described with reference to the drawings.

(First embodiment)
As shown in FIGS. 1 to 3, the drain motor 10 having a waterproof effect on the drive shaft according to the first embodiment of the present invention includes a housing 11, a motor 21, drain blades 31, and a water blocking cap 41.

  The housing 11 has a drain chamber 13 located at the bottom and a first perforation 15 formed at the top of the drain chamber 13.

  The motor 21 is mounted on the housing 11 so as to be positioned above the drain chamber 13, and has a second perforation 23 and a drive shaft 25 at the bottom. The end of the drive shaft 25 passes through the second perforation 23.

  The drainage blade 31 is located in the drainage chamber 13 and has a mandrel 33. The tip of the mandrel 33 is exposed to the upper drain chamber 13. The end of the drive shaft 25 is inserted into the tip of the mandrel 33. The mandrel 33 has a first end surface 331 formed at the tip, and a first contact portion 333 formed to extend from the first end surface 331 to a predetermined distance below the peripheral surface of the body of the mandrel 33.

The water blocking cap 41 has an annular wing portion 43 formed extending from the peripheral edge of the top portion, and a first cylindrical sleeve 45 whose opening portion faces downward. The first cylindrical sleeve 45 has a first bottom surface 46, a first peripheral wall surface 47 and a third perforation 461 formed in the first bottom surface 46 on the inner surface.
Since the drive shaft 25 is inserted into the third bore 461 of the first cylindrical sleeve 45, the water blocking cap 41 is positioned between the first bore 15 of the housing 11 and the mandrel 33 of the drainage blade 31. The first cylindrical sleeve 45 covers the tip of the mandrel 33, the first bottom surface 46 comes into contact with the first end surface 331 of the mandrel 33, and the first peripheral wall surface 47 comes into close contact with the first contact portion 333 of the mandrel 33.
By the technical means described above, water is prevented from flowing into the motor 21 along the drive shaft 25 of the motor 21.

  With the structure described above, the present invention can suppress water from flowing into the motor 21 along the drive shaft 25 of the motor 21.

The present embodiment further includes a waterproof adhesive 51. The waterproof adhesive 51 is applied between the first peripheral wall surface 47 of the first cylindrical sleeve 45 and the first contact portion 333 of the mandrel 33. The degree of contact between the first peripheral wall surface 47 of the first cylindrical sleeve 45 and the first contact portion 333 of the mandrel 33 is increased, and water is prevented from flowing into the motor 21 along the drive shaft 25 of the motor 21. The purpose is to improve the effect.
In the present embodiment, the waterproof adhesive 51 is not limited to the above, and may be additionally applied to the first bottom surface 46 of the first cylindrical sleeve 45 and the first end surface 331 (not shown in the drawing) of the mandrel 33, You may apply | coat to the fitting location (not shown in a figure) of the end of the 1st cylindrical sleeve 45 and the mandrel 33 from which a structure differs. Therefore, the usage state of the waterproof adhesive 51 is not limited to this embodiment.
On the other hand, if the first cylindrical sleeve 45 covers the tip of the mandrel 33 with a sufficient degree of adhesion, the waterproof adhesive 51 is not necessary, so the waterproof adhesive 51 is not an essential component in this embodiment.

  The above is the description of the structure of the first embodiment of the present invention. Subsequently, description will be made on the use state of the first embodiment of the present invention.

  As shown in FIGS. 1 to 3, when the drainage operation is performed, the drainage blade 31 is rotated by the driving force of the drive shaft 25 of the motor 21 to discharge the water in the drainage chamber 13 from the drainage pipe. Since the situation of the water backflow and the structure of the drain pipe are well known in this area, they are not shown in the drawings and will not be described separately.

When stopping the drainage work, when the rotation of the motor 21 stops, the driving force of the drive shaft 25 received by the drainage blade 31 is interrupted. At this time, the water remaining in the drain pipe is circulated to the drain chamber 13, and the water present in the drain chamber 13 is radiated from the first perforation 15 of the upper housing 11 to the motor 21.
Since the first bottom surface 46 of the first cylindrical sleeve 45 is in contact with the first end surface 331 of the mandrel 33 and the first peripheral wall surface 47 is in close contact with the first contact portion 333 of the mandrel 33, the water radiated to the motor 21 is the first. It is difficult to flow into the motor 21 along the body of the drive shaft 25 between the cylindrical sleeve 45 and the tip of the mandrel 33, and a part is blocked by the annular wing 43.
As described above, in this embodiment, the first bottom surface 46 is brought into contact with the first end surface 331 of the mandrel 33, and the first peripheral wall surface 47 is brought into close contact with the first contact portion 333 of the mandrel 33, so In addition to suppressing intrusion, the present invention can reliably prevent water from flowing into the motor 21 along the drive shaft 25 of the motor 21 because the annular wing 43 suppresses water intrusion into the motor 21. .

  As described above, the drainage motor 10 having a waterproof effect on the drive shaft according to the present invention can prevent water from flowing into the motor 21 along the drive shaft 25 of the motor 21.

(Second Embodiment)
FIG. 4 shows a drain motor 10 'having a waterproof effect on the drive shaft according to the second embodiment of the present invention. Differences from the first embodiment are as follows.

  The water blocking cap 41 'has a second cylindrical sleeve 47' protruding from the top. The second cylindrical sleeve 47 'covers a part of the body of the drive shaft 25'. When the water flows to the drive shaft 25 ′ located on the top of the water blocking cap 41 ′, the second cylindrical sleeve 47 ′ covers a part of the body of the drive shaft 25 ′, so that the drive shaft 25 ′ is isolated from the water. Water can be attached to the drive shaft 25 '. As described above, the second embodiment can suppress water from flowing into the motor 21 ′ along the drive shaft 25 ′ of the motor 21 ′.

  Since the other structures and effects that can be achieved in the second embodiment are the same as those in the first embodiment, a detailed description thereof is omitted.

(Third embodiment)
FIGS. 5 and 6 show a drain motor 10 ″ having a waterproof effect on the drive shaft according to the third embodiment of the present invention. Differences from the second embodiment are as follows.

The mandrel 33 ″ has a sub mandrel 61 ″ projecting at the tip. The drive shaft 25 ″ is inserted into the sub mandrel 61 ″. The sub mandrel 61 ″ has a second end surface 611 ″ formed at the top and a second contact surface 613 ″ formed by extending from the second end surface 611 ″ to a predetermined distance below the peripheral surface of the body of the sub mandrel 61 ″. In the first cylindrical sleeve 45 ″, the first bottom surface 46 ″ has a concave groove portion 48 ″ formed to be recessed in the center. The diameter of the concave groove 48 "is smaller than the diameter of the first cylindrical sleeve 45". The concave groove 48 ″ is fitted to the sub mandrel 61 ″ and has a second bottom surface 481 ″ and a second peripheral wall surface 483 ″. The second bottom surface 481 ″ contacts the second end surface 611 ″ of the sub mandrel 61 ″. The second peripheral wall surface 483 ″ contacts the second contact portion 613 ″ of the sub mandrel 61 ″.
As described above, in the first cylindrical sleeve 45 ″, the concave groove portion 48 ″ has the second bottom surface 481 ″ abutting against the second end surface 611 ″ of the sub mandrel 61 ″ and the second peripheral wall surface 483 ″ of the sub mandrel 61 ″. Since it is in close contact with the second contact portion 613 ″, water can be prevented from flowing into the motor 21 ″ along the drive shaft 25 ″ of the motor 21 ″.

  In summary, the second bottom surface 481 ″ of the concave groove portion 48 ″ is brought into contact with the second end surface 611 ″ of the sub mandrel 61 ″, and the second peripheral wall surface 483 ″ of the concave groove portion 48 ″ is the second end surface 611 ″ of the sub mandrel 61 ″. Due to the technical feature of close contact with the contact portion 613 ″, the present invention can prevent water from flowing into the motor 21 ″ along the drive shaft 25 ″ of the motor 21 ″.

  Since the other structures of the third embodiment and the effects that can be achieved are the same as those of the second embodiment, detailed description thereof is omitted.

10 Drainage motor with waterproof effect on drive shaft
11 Housing
13 Drain chamber
15 First drill
21 motor
23 Second drilling
25 Drive shaft
31 Drainage blade
33 Mandrel
331 first end surface
333 First adhesion site
41 Water blocking cap
43 Annular wing
45 First cylindrical sleeve
46 First bottom
461 Third drilling
47 1st wall surface
51 Waterproof adhesive
10 'Drainage motor with a waterproof effect on the drive shaft
21 'motor
25 'drive shaft
41 'water blocking cap
47 'second cylindrical sleeve 10 "drainage motor with waterproof effect on the drive shaft
21 "motor
25 "drive shaft
33 ”mandrel
45 "first cylindrical sleeve
46 "first bottom
48 "concave groove
481 "second bottom
483 ”second wall
61 "sub mandrel
611 "second end face
613 "second contact area

Claims (4)

With housing, motor, drainage blades and water shut-off cap,
The housing has a drain chamber located at the bottom, and a first perforation formed at the top of the drain chamber,
The motor is mounted on the housing so as to be located above the drainage chamber, and has a second perforation and a drive shaft at the bottom, and the drive shaft has a distal end penetrating the second perforation,
The drainage blade is located in the drainage chamber, has a mandrel, the tip of the mandrel is exposed to the drainage chamber above, and the end of the drive shaft is inserted into the tip of the mandrel, The mandrel has a first end surface formed at the tip, and a first contact portion formed by extending from the first end surface to a predetermined distance below the peripheral surface of the body of the mandrel,
The water blocking cap has an annular wing formed extending from a peripheral edge of the top portion and a first cylindrical sleeve having an opening facing downward, and the first cylindrical sleeve covers the tip portion of the mandrel. The first bottom surface, the first peripheral wall surface and a third perforation formed in the first bottom surface, the first bottom surface abutting the first end surface of the mandrel, and the first peripheral wall surface of the mandrel Adhering to the first adhesion site,
The water blocking cap is positioned between the first perforation of the housing and the mandrel of the drainage blade by the drive shaft passing through the third perforation of the first cylindrical sleeve. ,
A drainage motor with a waterproof effect on the drive shaft.   2. The drive shaft according to claim 1, wherein the water blocking cap has a second cylindrical sleeve protruding at a top portion, and the second cylindrical sleeve covers a part of a body of the drive shaft. Drainage motor with effect.   The mandrel has a sub mandrel protruding at a tip, the drive shaft of the motor is inserted into the sub mandrel, the sub mandrel is formed at a top end, and the sub mandrel from the second end surface. The first cylindrical sleeve of the water blocking cap, wherein the first bottom surface is recessed in the center. The concave groove portion is smaller in diameter than the first cylindrical sleeve, the concave groove portion is fitted to the sub mandrel, has a second bottom surface and a second peripheral wall surface, 2. The drive shaft according to claim 1, wherein two bottom surfaces are in contact with the second end surface of the sub mandrel, and the second peripheral wall surface is in close contact with the second contact portion of the sub mandrel. Having drainage motor.   The waterproof adhesive is further provided between the first peripheral wall surface of the first cylindrical sleeve and the first contact portion of the mandrel. A drainage motor having a waterproof effect on the drive shaft described in 1.

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