CN212381037U

CN212381037U - Submersible motor

Info

Publication number: CN212381037U
Application number: CN202021062000.1U
Authority: CN
Inventors: 齐文; 牟世刚; 边玉彬; 于希亮
Original assignee: Shandong Fuwei Environmental Technology Co ltd
Current assignee: Shandong Fuwei Environmental Technology Co ltd
Priority date: 2020-06-09
Filing date: 2020-06-09
Publication date: 2021-01-19
Anticipated expiration: 2030-06-09

Abstract

The present disclosure provides a submersible motor, comprising: the device comprises a stator, a rear door head, a front door head, a rubber flat gasket, a machine shell, an end cover, a threaded hole waterproof device and an O-shaped ring; the stator is provided with symmetrical grooves, the rear door head and the front door head are provided with convex edges, and the convex edges of the rear door head and the front door head are matched with the grooves of the stator; the stator, the rear door head and the front door head are arranged in the shell and are tightly matched and fixed with the inner wall of the shell; the end cover is arranged on the front door, and the front door is provided with a boss which is tightly assembled with the end cover and a line hole for leading out a machine line; the end cover is provided with two grooves for respectively placing a rubber flat gasket and an O-shaped ring, the rubber flat gasket is arranged on the end face along a first direction, and the O-shaped ring is arranged along a second direction perpendicular to the first direction. This openly has simplified the screw thread fitting relation of original stator and front and back door head, can realize dive alternating current motor terminal surface and screw hole dual waterproof, has reduced the risk of seepage.

Description

Submersible motor

Technical Field

The present disclosure relates to the field of machinery, and in particular, to submersible motors.

Background

Electric machines are general-purpose machines that convert electrical energy into mechanical energy. The motors which are well-developed and applied are of the types of series excited direct current motors, shunt excited direct current motors, separately excited direct current motors, compound excited direct current motors, rare earth permanent magnet direct current motors, ferrite permanent magnet direct current motors, alnico permanent magnet direct current motors, single-phase alternating current motors, three-phase alternating current motors and the like.

The motor with the same performance, the alternating current motor is durable and anti-groove, the manufacturing cost is economical and practical, and compared with the direct current motor, the motor has the defects of larger volume and lower efficiency performance; the direct current motor has the defects of exquisite volume, high efficiency and performance, stability and relatively high manufacturing cost; particularly, in the volume and the appearance of the motor, the alternating current motor is suitable for being made large, the minimum specification of the alternating current motor specified by the national motor standard is 80mm of the diameter of the base, and the alternating current motor is difficult to be made small; for a dc motor, the limitation of the volume profile is much smaller. For many application working condition occasions, especially the working condition occasions of toilet bowl water tank pressure boost bath, need the motor corollary equipment use of exquisite and economical and practical of volume.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present disclosure provides an ac motor having a relatively low manufacturing cost while reducing its volume profile and waterproof performance.

The present disclosure provides a submersible motor, comprising: the device comprises a stator, a rear door head, a front door head, a rubber flat gasket, a machine shell, an end cover, a threaded hole waterproof device and an O-shaped ring;

the stator is provided with symmetrical grooves, the rear door head and the front door head are provided with convex edges, and the convex edges of the rear door head and the front door head are matched with the grooves of the stator;

the stator, the rear door head and the front door head are arranged in the shell and are tightly matched and fixed with the inner wall of the shell;

the end cover is arranged on the front door, and the front door is provided with a boss which is tightly assembled with the end cover and a line hole for leading out a machine line;

the end cover is provided with two grooves for respectively placing a rubber flat gasket and an O-shaped ring, the rubber flat gasket is arranged on the end face along a first direction, and the O-shaped ring is arranged along a second direction perpendicular to the first direction.

In the submersible motor, a threaded hole waterproof device is arranged in a threaded hole of the end cover, and the threaded hole waterproof device is composed of a screw with a smooth stud, a rubber flat pad and a bullet rubber pad.

In the submersible motor, a part of the screw hole of the end cover, which receives the bullet-shaped rubber pad, is a conical surface, and the conical surface of the bullet-shaped rubber pad is matched with the conical surface of the bullet-shaped rubber pad to press the conical surface of the bullet-shaped rubber pad.

The present disclosure simplifies the original screw thread assembly relationship between the stator and the front and rear door heads, and omits the screw thread arrangement, so that the overall external diameter of the alternating current motor can be reduced to below 70mm, and the effective power of the motor is ensured to be above 50w, which is very practical for the narrow water tank installation space of the toilet bowl and the narrow installation space inside small household appliances such as household water purifiers, and can reduce the manufacturing cost to a certain extent.

In addition, through adopting this disclosed scheme, can realize dive alternating current motor terminal surface and screw hole dual waterproof, reduce the risk of seepage, can satisfy 1P68 waterproof grade.

Drawings

Fig. 1 shows a cross-sectional view of an electric machine of the present disclosure.

Fig. 2 shows a perspective view of the electric machine of the present disclosure.

Fig. 3 shows a perspective view of the front door head of the motor of the present disclosure.

Fig. 4 shows a perspective view of a rear door head of the motor of the present disclosure.

Fig. 5 illustrates a perspective view of an end cap of the electric machine of the present disclosure.

Fig. 6 shows a perspective view of a screw hole waterproof device of the motor of the present disclosure.

Detailed Description

The following examples are presented to enable those skilled in the art to more fully understand the disclosure, but are not intended to limit the disclosure in any way.

The utility model provides a miniature dive alternating current motor, this motor adopt the stator of symmetry dog tooth design and the simplified assembly relation of front and back door head, adopt dual fail-safe screw hole watertight fittings and dual fail-safe motor end cover terminal surface waterproof simultaneously.

As shown in fig. 1 to 6, the motor of the present disclosure includes a stator 1, a rear door head 2, a front door head 3, a rubber flat gasket 4, a housing 5, an end cover 6, a screw hole waterproof device 7, and an O-ring 8. The stator 1 is provided with 4 symmetrical dog-tooth grooves, and a rear door head 2 and a front door head 3 which are provided with dog-tooth convex edges are arranged above and below the stator. The dog-tooth convex

edges

10 and 11 of the rear door head 2 and the front door head 3 are matched with the dog-tooth grooves 9 of the stator 1. The stator 1 may be made of metal or polymer. The rear door head 2 and the front door head 3 may be formed of a polymer.

The stator 1, the rear door head 2 and the front door head 3 are pressed into the motor casing 5 and tightly matched with the motor casing 5, so that a fixed relationship is formed between the stator 1, the rear door head 2 and the front door head, and the fixed relationship can bear the pulling force of 150kg, for example. The housing 5 may be made of metal or polymer. The assembling relation of the stator and the front and rear door heads simplifies the original screw assembling relation of the stator and the front and rear door heads, and the arrangement of screw threads is omitted, so that the external diameter of the whole alternating current motor can be reduced to be less than 70mm, and the effective power of the motor is ensured to be more than 50w, therefore, the assembling relation is very practical for the narrow water tank installation space of a toilet bowl and the narrow installation space in small household appliances such as a household water purifier, and the manufacturing cost can be reduced to a certain extent.

An end cover 6 is arranged at the upper end of the motor, and a boss 3-1 which is tightly assembled with the end cover 6 and a wire hole 3-2 for leading out a machine wire are arranged on the front door head 3. The end cap 6 may be formed of a polymer, such as polyimide or the like.

In order to prevent the end surfaces of the motor end cover 6 and the machine shell 5 from water seepage, the motor end cover 6 is provided with two grooves for placing the rubber flat gasket 4 and the O-shaped ring 8, so that the purpose of end surface double seepage prevention is realized. The flat rubber pad 4 is disposed on the end surface along a first direction, and the O-ring 8 is disposed along a second direction perpendicular to the first direction. A rubber flat gasket 4 and an O-ring 8 may be provided in a groove of the end cap 6.

In order to prevent the water seepage of the screw hole assembled by the motor end cover 6 and the boss 3-1, the motor end cover 6 is provided with a double-insurance threaded hole waterproof device 7. The double-safety waterproof device 7 of the threaded hole consists of a screw 7-1 with a smooth stud, a rubber flat pad 7-2 and a bullet-shaped rubber pad 7-3, and the double waterproof function is realized by firstly fastening the rubber flat pad 7-2 with an assembly plane under the action of the screw 7-1 to realize first heavy waterproof; and secondly, the bullet-shaped rubber pad 7-3 is fastened with the assembly conical surface through a screw 7-1, and the bullet-shaped rubber pad 7-3 tightly embraces the smooth stud of the screw 7-1, so that secondary water resistance is realized. The part of the screw 7-1 covered by the bullet-shaped rubber pad 7-3 is a smooth stud, and a threaded part is arranged below the smooth stud. The screw 7-1 may be made of metal.

In some embodiments, the screw hole for receiving the bullet-shaped rubber pad 7-3 is tapered to cooperate with the tapered surface of the bullet-shaped rubber pad 7-3 to press the tapered surface of the bullet-shaped rubber pad 7-3, reducing the risk of leakage, so that the waterproof performance is enhanced. Through adopting this disclosed scheme, can realize dive alternating current motor terminal surface and screw hole dual waterproof, reduce the risk of seepage, can satisfy 1P68 waterproof grade.

Those skilled in the art will appreciate that the above embodiments are merely exemplary embodiments and that various changes, substitutions, and alterations can be made without departing from the spirit and scope of the application.

Claims

1. A submersible motor comprising:

the device comprises a stator (1), a rear door head (2), a front door head (3), a rubber flat gasket (4), a shell (5), an end cover (6), a threaded hole waterproof device (7) and an O-shaped ring (8);

the novel motor is characterized in that the stator (1) is provided with symmetrical grooves, the rear door head (2) and the front door head (3) are provided with convex edges, and the convex edges of the rear door head (2) and the front door head (3) are matched with the grooves of the stator (1);

the stator (1), the rear door head (2) and the front door head (3) are arranged in the casing (5) and are tightly matched and fixed with the inner wall of the casing (5);

the end cover (6) is arranged on the front door head (3), and the front door head (3) is provided with a boss (3-1) which is tightly assembled with the end cover (6) and a line hole (3-2) for leading out a machine line;

the end cover (6) is provided with two grooves for respectively placing the rubber flat gasket (4) and the O-shaped ring (8), the rubber flat gasket (4) is arranged on the end face along a first direction, and the O-shaped ring (8) is arranged along a second direction perpendicular to the first direction.

2. The submersible motor according to claim 1, characterized in that a threaded hole waterproof device (7) is arranged in a threaded hole of the end cover (6), and the threaded hole waterproof device (7) consists of a screw (7-1) with a smooth stud, another rubber flat pad (7-2) and a bullet-shaped rubber pad (7-3).

3. A submersible motor according to claim 1, wherein the part of the screw hole of the end cap (6) that receives the bullet-shaped rubber pad (7-3) is tapered, and cooperates with the tapered surface of the bullet-shaped rubber pad (7-3) to press the tapered surface of the bullet-shaped rubber pad (7-3).