TWM557782U - Draining motor with waterproof function for motor drive shaft - Google Patents

Abstract

A drainage motor having a waterproof function for a motor drive shaft, comprising: a casing having a drainage chamber at the bottom; a motor having a drive shaft; and a drainage blade located in the drainage chamber, the drainage blade having a core a shaft, the top end of the mandrel is exposed upwardly outside the drain chamber, the drive shaft is inserted into the mandrel, the mandrel has a first end face and a first fitting section; and a water retaining cover, the block An annular flap and a first sleeve having an opening facing downwardly, the first sleeve has a first bottom surface and a first peripheral wall, and the driving shaft passes through the water retaining cover. The first bottom surface is affixed to the first end surface, and the first peripheral wall is closely attached to the first bonding portion. Thereby, it is waterproof to enter the motor along the drive shaft of the motor.

Description

Waterproof motor for motor drive shaft

This creation is related to the drain motor, and in particular to a drain motor that is waterproof to the motor drive shaft.

According to the drain motor used in the conventional air-conditioning system, when the operation is stopped, the undischarged water will flow back into the drain chamber, and when the impact force of the return flow is too large, the splash will easily splash into the motor and cause damage to the motor.

Therefore, please refer to Japanese Patent No. JP20090264317, which provides a waterproof motor for preventing water from entering an electric motor, and is provided with a cover member 30 and a baffle 15 at the opening of the pump chamber 52, and the baffle 15 is engaged with the upper end of the shaft 210. The groove 212 is used to complete the assembly. The deflector can block the water that is scattered to the motor and prevent the water from entering the motor and causing damage to the motor.

And, please refer to the Chinese Patent No. CN2654915(Y), which provides a drain pump having a filtering function, wherein the drain pump is provided with a water retaining ring 5 on the motor shaft 7, thereby preventing water from being pumped by the pump chamber 3 The upper opening enters the motor 6, and the water retaining ring can also block the water that is scattered to the motor, thereby preventing the water from entering the motor and causing damage to the motor.

However, with regard to the patent JP20090264317, the Applicant believes that by engaging the baffle to the upper end of the shaft of the impeller, water is likely to pass along the gap between the baffle and the groove. The drive shaft enters the motor.

In addition, regarding CN2654915(Y), the applicant believes that by attaching the water retaining ring to the motor shaft, similarly, water may enter the motor motor shaft through the gap between the water retaining ring and the motor shaft. Inside the motor.

Therefore, it can be seen from the above that the structure provided by the above two patents still has room for improvement in the structure of waterproofing into the motor along the motor drive shaft.

The main purpose of the present invention is to provide a drain motor that is waterproof to the motor drive shaft and that is waterproof to enter the motor along the motor drive shaft.

According to the present invention, a drain motor having a waterproof function for a motor drive shaft according to the present invention includes: a casing having a drain chamber at the bottom, the drain chamber having a first perforation at the top; a motor Provided in the casing and above the drainage chamber, the motor has a second perforation at the bottom and a drive shaft, the bottom end of the drive shaft is pierced by the second perforation; and characterized by: a drainage blade , in the drainage chamber, the drainage blade has a mandrel, the top end of the mandrel is exposed upwardly outside the drainage chamber, and the bottom end of the drive shaft is inserted at the top end of the mandrel, the top end of the mandrel a first end face, and a first fitting section defined by the first end face along a circumferential surface of the body of the mandrel; and a water retaining cover, the top side of the water retaining cover extends An annular sleeve and a first sleeve having an opening downwardly, the first sleeve having a first bottom surface and a first peripheral wall, the first bottom surface having a third perforation, the water retaining cover being The drive shaft passes through the third perforation Between the first through hole and the mandrel, and the first sleeve is sleeved on one end of the mandrel, wherein the first bottom surface abuts against the first end surface, and the first peripheral wall is closely attached In the first bonding section.

Thereby, the creation can be waterproofed into the motor along the drive shaft of the motor.

In order to explain in detail the technical features of the creation, the following embodiments are described with reference to the following:

As shown in FIG. 1 to FIG. 3 , a drain motor 10 having a waterproof function for a motor drive shaft according to a first embodiment of the present invention is mainly composed of a casing 11 , a motor 21 , a drain blade 31 , and a The water retaining cover 41 is composed of:

The casing 11 has a drainage chamber 13 at the bottom, and the drainage chamber 13 has a first perforation 15 at the top.

The motor 21 is disposed on the casing 11 and above the drainage chamber 13. The motor 21 has a second through hole 23 at the bottom and a drive shaft 25. The bottom end of the drive shaft 25 is defined by the second through hole 23. Wear it out.

The drainage blade 31 is located in the drainage chamber 13. The drainage blade 31 has a mandrel 33. The top end of the mandrel 33 is exposed upwardly outside the drainage chamber 13. The bottom end of the drive shaft 25 is inserted. At the top end of the mandrel 33, the top end of the mandrel 33 has a first end face 331, and a first fitting section 333 defined by the first end face 331 along a circumferential surface of the body of the mandrel 33 by a predetermined distance. .

The water retaining cover 41 has an annular flap 43 and a first sleeve 45 having an opening downwardly facing the top side of the water retaining cover 41. The first sleeve 45 has a first bottom surface 46 and a first inner surface. a first peripheral wall 47 having a third through hole 461. The water blocking cover 41 is disposed between the first through hole 15 and the mandrel 33 by the driving shaft 25. The first sleeve 45 is sleeved on the top end of the mandrel 33, wherein the first bottom surface 46 is contiguous with the first end surface 331 of the first end surface, and the first peripheral wall 47 is closely attached to the first end wall 47. The first bonding section 333. Thereby, the motor 21 can be made waterproof along the drive shaft 25 of the motor 21.

From this, it can be seen that with the above configuration, the present invention can be made waterproof to enter the motor 21 along the drive shaft 25 of the motor 21.

In this embodiment, a waterproof adhesive 51 is further disposed between the first peripheral wall 47 and the first bonding section 333, and the purpose is to increase the first peripheral wall. The degree of adhesion between the 47 and the first bonding section 333 further enhances the effect of waterproofing along the drive shaft 25 of the motor 21 into the motor 21. In the embodiment, the waterproof adhesive 51 can also be applied between the first bottom surface 46 and the first end surface 331 (not shown), or can be applied to the first sleeve of other different structures. 45 and the sleeve of one end of the mandrel 33 (not shown), therefore, the embodiment of the waterproof adhesive 51 should not only be limited to the embodiment. Then, if the degree of adhesion of the first sleeve 45 to the tip end of the mandrel 33 is sufficient, the waterproof adhesive 51 does not need to be applied, and therefore, the waterproof adhesive 51 is not an essential component in the practice of the present invention.

The configuration of the first embodiment of the present invention has been described above, and the state of use of the first embodiment of the present creation will be described below.

Referring to FIGS. 1 to 3, when the drainage is created, the drainage blade 31 is driven to rotate by the drive shaft 25 of the motor 21 to assist the water in the drainage chamber 13 by one. Discharge of the drain pipe (due to the situation of the countercurrent flow of water and the drain pipe are well known to those skilled in the art, therefore, the drawings are not otherwise indicated).

When the creation stops draining, the motor 21 stops operating and stops the drive shaft 25 from driving the drain blade 31. At this time, the water system that has not been discharged in the drain pipe is returned to the drain chamber 13, The water originally present in the drainage chamber 13 passes upward through the first through hole 15 and is splashed toward the motor 21. At this time, the first bottom surface 46 is closely attached to the first end surface. The first peripheral wall 47 is in close contact with the first bonding section 333. Therefore, the water splashed toward the motor 21 is difficult to follow the first sleeve 45 and the top end of the mandrel 33. The shaft of the drive shaft 25 enters the motor 21, and the remaining water splashed toward the motor 21 is blocked by the annular fin 43. It can be seen that, in addition to the annular flap 43 , the water can enter the motor 21 , and the first bottom surface 46 abuts against the first end surface 331 , and the first peripheral wall 47 is closely attached. In the first bonding section 333, the present invention can achieve the effect of waterproofing the motor 21 along the drive shaft 25 of the motor 21.

Accordingly, the drain motor 10 provided with the waterproof function of the motor drive shaft provided by the present invention can effectively prevent the motor 21 from entering the motor 21 along the drive shaft 25 of the motor 21.

Next, referring to FIG. 4, a drain motor 10' having a waterproof function for the motor drive shaft provided by the second embodiment of the present invention is mainly similar to the first first embodiment, and the difference is:

A second sleeve 47' is protruded upward from the top of the water retaining cover 41', and the second sleeve 47' is engaged with a portion of the shaft body of the drive shaft 25'. Therefore, when the water faces the drive shaft 25' at the top of the water retaining cover 41', since the second sleeve 47' fits over a part of the shaft body of the drive shaft 25', the drive shaft 25' The water partition can be prevented from adhering to the drive shaft 25' by the second sleeve 47', thereby having the effect of waterproofing the motor 21' along the drive shaft 25' of the motor 21'. .

The structure and the achievable functions of the second embodiment of the present invention are similar to those of the first embodiment, and will not be further described.

Referring to FIG. 5 and FIG. 6 , a drain motor 10 ′′ having a waterproof function for the motor drive shaft provided by the third embodiment of the present invention is mainly similar to the previous second embodiment, and the difference is different. It is:

The top end of the mandrel 33'' protrudes further from a sub-core shaft 61''. The drive shaft 25" passes through the sub-core shaft 61". The top of the sub-core shaft 61" has a second end surface 611. '', and a second fitting section 613'' defined by the second end surface 611'' along the circumferential surface of the body of the sub-core shaft 61" is defined by a predetermined distance; the center of the first bottom surface 46" is further The recess is provided with a recess 48'', the diameter of the recess 48" is smaller than the diameter of the first sleeve 45", and the recess 48" is fitted to the sub-core 33", wherein The recess 48'' has a second bottom surface 481'' and a second peripheral wall 483" that abuts against the second end surface 611'', and the second peripheral wall 483'' Adhered to the second fitting section 613''. Therefore, the second bottom surface 481 ′′ is in contact with the second end surface 611 ′′, and the second peripheral wall 483 ′′ is in close contact with the second bonding portion 613 ′′, thereby having The effect of entering the motor 21" along the drive shaft 25" of the motor 21" is waterproof.

As can be seen from the above, the second bottom surface 481 ′′ is in contact with the second end surface 611 ′′, and the second peripheral wall 483 ′′ is in close contact with the technical feature of the second bonding portion 613 ′′. This creation has the effect of waterproofing into the motor 21" along the drive shaft 25" of the motor 21".

The structure and the achievable functions of the third embodiment of the present invention are the same as those of the previous second embodiment, and will not be further described.

10‧‧‧Drain motor with waterproof function for the motor drive shaft
11‧‧‧Shell
13‧‧‧Draining chamber
15‧‧‧First perforation
21‧‧‧Motor
23‧‧‧Second perforation
25‧‧‧Drive shaft
31‧‧‧Drainage blades
33‧‧‧ mandrel
331‧‧‧ first end face
333‧‧‧First fit section
41‧‧‧Water retaining cover
43‧‧‧Ring fins
45‧‧‧First sleeve
46‧‧‧ first bottom surface
461‧‧‧ third perforation
47‧‧‧First week wall
51‧‧‧Waterproof adhesive
10'‧‧‧Drain motor with waterproof function for motor drive shaft
21'‧‧‧Motor
25'‧‧‧Drive shaft
41'‧‧‧Water retaining cover
47'‧‧‧Second sleeve
10''‧‧‧Drain motor with waterproof function for motor drive shaft
21''‧‧‧Motor
25''‧‧‧ drive shaft
33''‧‧‧ mandrel
45''‧‧‧First sleeve
46''‧‧‧ first bottom
48''‧‧‧ Groove
481''‧‧‧ second bottom
483''‧‧‧ Second week wall
61''‧‧‧Sub-core
611''‧‧‧ second end
613''‧‧‧Second fitting section

Figure 1 is a perspective view of a first embodiment of the present creation. Fig. 2 is a partial cross-sectional view showing the first embodiment of the present creation. Figure 3 is a partial enlarged view of the first embodiment of the present creation. Figure 4 is a partial cross-sectional view showing a second embodiment of the present creation. Figure 5 is a partial cross-sectional view showing a third embodiment of the present creation. Figure 6 is a partial enlarged view of the third embodiment of the present creation

Claims (4)

A drain motor having a waterproof function for a motor drive shaft, comprising: a casing having a drain chamber at the bottom, the drain chamber having a first perforation at the top; a motor disposed on the casing and located at the casing Above the drainage chamber, the motor has a second perforation at the bottom and a drive shaft, the bottom end of the drive shaft is pierced by the second perforation; and characterized by: a drainage blade located in the drainage chamber, the drainage The blade has a mandrel, the top end of the mandrel is exposed upwardly outside the drain chamber, the bottom end of the drive shaft is inserted at the top end of the mandrel, the top end of the mandrel has a first end face, and a first end face defining a predetermined distance along a circumferential surface of the body of the mandrel; and a water retaining cover, the top side of the water retaining cover extending an annular fin and having an opening facing downward a first sleeve having a first bottom surface and a first peripheral wall, the first bottom surface having a third perforation, the water blocking cover being located by the driving shaft through the third perforation The first perforation and the mandrel And the first sleeve is fit to the top line of the mandrel, wherein the first bottom surface line against the top of the first end face wall and the first peripheral line close to the first bonding section. A drain motor having a waterproof function for a motor drive shaft according to the first aspect of the patent application, wherein: a second sleeve is protruded upwardly from a top of the water retaining cover, and the second sleeve is sleeved with a part of the shaft of the drive shaft body. A drain motor having a waterproof function for a motor drive shaft according to the first aspect of the patent application, wherein: the top end of the mandrel protrudes from a sub-core shaft, the drive shaft passes through the sub-core shaft, and the top of the sub-core shaft Having a second end surface, and a second bonding section defined by the second end surface along the circumferential surface of the body surface of the sub-core shaft by a predetermined distance; a recess is formed in the center of the first bottom surface The aperture is smaller than the diameter of the first sleeve, and the groove is sleeved on the sub-core shaft, wherein the groove has a second bottom surface and a second peripheral wall, the second bottom surface is affixed to the second bottom An end surface, and the second peripheral wall is in close contact with the second bonding section. A drainage motor having a waterproof function for a motor drive shaft according to the first aspect of the patent application, wherein: a waterproof adhesive is further disposed between the first peripheral wall and the first bonding portion.