CN217590439U

CN217590439U - High-speed motor of commercial drum washing machine

Info

Publication number: CN217590439U
Application number: CN202221733642.9U
Authority: CN
Inventors: 秦晓春
Original assignee: Jiangsu Changjin Intelligent Electric Appliance Co ltd
Current assignee: Jiangsu Changjin Intelligent Electric Appliance Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-10-14
Anticipated expiration: 2032-07-06

Abstract

The utility model belongs to the technical field of the motor technology and specifically relates to a commercial drum type washing machine high-speed motor, a higher high-speed motor of rigidity and precision is provided, satisfy the requirement that commercial drum type washing machine motor is high-power and bear complicated load, the stator has, front end housing and rear end cap are coupled by three at least first connecting bolt that the circumference distributes, stretch out on the outer terminal surface of front end housing and rear end cap respectively at first connecting bolt both ends, the motor has the cylinder shell of parcel stator, the preceding terminal surface and the rear end face of shell respectively with the interior terminal surface tang formula cooperation of front end housing and rear end cap, the circumference distributes to a plurality of reinforcing lug that outwards swells on the periphery wall of front end housing and rear end cap, reinforcing lug upwards extends to the interior terminal surface of front end housing and rear end cap, be equipped with the coupling ear that the circumference distributes on the periphery wall that front end housing and rear end cap are close to mutually respectively, it is preceding, coupling ear one-to-one on the rear end cap, the coupling ear is by second coupling bolt fixed coupling.

Description

High-speed motor of commercial drum washing machine

Technical Field

The utility model belongs to the technical field of the motor technique and specifically relates to a commercial drum type washing machine high speed motor.

Background

The high-speed motor usually refers to the motor that the rotational speed exceeds 10000r/min, high-speed motor is for improving structural rigidity, and front end housing and rear end cap are generally not fixed on the shell respectively like ordinary motor, but directly couple front end housing and rear end cap by four longer connecting bolts, and front end housing and rear end cap can directly press on stator core, so, some high-speed motors can omit the shell, if there is the shell also only to play the parcel effect, this kind of motor mainly has two defects: 1. the motor stator is formed by laminating iron core laminations, a front end cover and a rear end cover of the motor are pressed at two ends of the stator, the thickness of raw material plates of the iron core laminations has inevitable tolerance, and the height of a plurality of iron core laminations after lamination has uncontrollable deviation, so that the distance between the front end cover and the rear end cover has deviation; 2. the length of the connecting bolt is long, the deformation amount is large when the connecting bolt expands with heat and contracts with cold, and the fixing precision and the fixing rigidity of the front end cover and the rear end cover are influenced; the defects of rigidity and precision caused by the two defects have little influence on a small-power high-speed motor with hundreds of watts, but can cause serious noise and vibration problems on a high-power high-speed motor with more than one kilowatt, and the service life of the motor is also not long.

The commercial washing machine is a relatively large washing machine used in factories, hotels, schools and other occasions, the commercial washing machine mainly uses a drum type, the power of a motor used by the commercial washing machine generally requires 1-5 KW, in addition, a driving wheel on the motor transmits power to a driven disc on a drum through a belt, a motor shaft needs to bear the tension of the belt, if the rigidity of a motor rotor is insufficient or the rigidity of a support part for supporting the motor rotor is insufficient, the rotor is easy to generate bending deformation, so although the high-speed motor has the advantages of small volume, low noise, material saving, electricity saving and the like, the conventional high-speed motor cannot be well used on the commercial washing machine.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the high-speed motor of the commercial drum washing machine has high rigidity and precision, and meets the structural requirements of the high-power complex-load high-speed motor of the commercial drum washing machine.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a commercial drum type washing machine high-speed motor, has stator, front end housing and rear end cap connect by three piece at least first connecting bolt that the circumference distributes, first connecting bolt both ends are stretched out from the outer terminal surface of front end housing and rear end cap respectively, the motor has the cylinder shell of parcel stator, the preceding terminal surface and the rear end face of shell respectively with the interior terminal surface tang formula cooperation of front end housing and rear end cap.

In order to improve the assembly rigidity of the end cover and the shell, a plurality of reinforcing lugs which protrude outwards are distributed on the periphery wall of the front end cover and the periphery wall of the rear end cover, and the reinforcing lugs axially extend to the inner end faces of the front end cover and the rear end cover.

In order to further improve the supporting rigidity of the front end cover and the rear end cover to the rotor, the peripheral walls, close to the front end cover and the rear end cover, of the front end cover are respectively provided with connecting lugs distributed circumferentially, the connecting lugs on the front end cover correspond to the connecting lugs on the rear end cover one to one, the connecting lugs are provided with bolt holes, and each group of corresponding connecting lugs are fixedly connected through a second connecting bolt.

Specifically, the connecting lug is integrally extended from the front end cover and the rear end cover.

Specifically, in order to enable the second connecting bolts and the first connecting bolts to be close to form a connecting combination, the number of the second connecting bolts of the motor is equal to that of the first connecting bolts, and any second connecting bolt is circumferentially located between two first connecting bolts and the distance between the second connecting bolt and the two first connecting bolts is different.

Specifically, the reinforcing protrusion is in the shape of a circular arc protrusion on the cross section of the motor.

The utility model has the advantages that: 1. the utility model uses the shell for the motor connected with the front and the rear end covers by the long connecting bolt, the distance between the front and the rear end covers is determined by the length of the shell, the coaxiality is ensured by the assembling seam allowance, and the precision of the motor is improved; 2. the reinforcing lugs extending to the end surface rabbets are arranged on the outer walls of the front end cover and the rear end cover, so that the matching rigidity of the front end cover and the rear end cover and the shell is improved, and the condition that the product is heavy due to the fact that the rigidity is improved by increasing the wall thickness of the product is avoided; 3. further, the short second connecting bolts are used for further fixed connection at the positions close to the front end cover and the rear end cover, the second connecting bolts with short lengths have small length change under the condition of thermal expansion and cold contraction, the connection between the front end cover and the rear end cover is firmer, and the support rigidity of the rotor is improved; the high-speed motor can have larger power and the output shaft end can bear complex load by the means of improving the rigidity and the precision of the high-speed motor, and the requirement of the commercial drum washing machine for using the high-speed motor is met.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a partial axial cross-sectional view of the motor of FIG. 1 at a non-reinforced tab;

fig. 3 is a partial axial cross-sectional view of the motor of fig. 1 at the reinforcing tabs.

In the figure: 1. the stator comprises a stator body 2, a front end cover 3, a rear end cover 4, a first connecting bolt 5, a shell 6, a reinforcing lug 7, a connecting lug 8 and a second connecting bolt.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic drawings and illustrate, by way of illustration only, the basic structure of the invention, and thus only show the components that are relevant to the invention.

A high-speed motor of a commercial drum washing machine as shown in fig. 1, which comprises a stator 1, a front end cover 2 and a rear end cover 3, wherein the front end cover 2 and the rear end cover 3 are connected by four first connecting bolts 4 distributed circumferentially, two ends of the first connecting bolts 4 respectively extend out from the outer end faces of the front end cover 2 and the rear end cover 3, the outer end faces of the front end cover 2 and the rear end cover 3 can be plane or not, the first connecting bolts 4 can use single-headed bolts or double-headed bolts, in combination with fig. 2 and 3, the motor is provided with a cylindrical shell 5 wrapping the stator 1, the front end face and the rear end face of the shell 5 are respectively in spigot type fit with the inner end faces of the front end cover 2 and the rear end cover 3, and the spigot type fit is mutually engageable step faces, as shown in fig. 2 and 3; a plurality of reinforcing lugs 6 which protrude outwards are circumferentially distributed on the outer peripheral walls of the front end cover 2 and the rear end cover 3, the reinforcing lugs 6 axially extend to the inner end surfaces of the front end cover 2 and the rear end cover 3, and as shown in fig. 3, the reinforcing lugs 6 increase the local wall thickness at the seam allowance; the peripheral walls of the front end cover 2 and the rear end cover 3 which are close to each other are respectively provided with connecting lugs 7 which are distributed circumferentially, the connecting lugs 7 on the front end cover 2 correspond to the connecting lugs 7 on the rear end cover 3 one by one, the connecting lugs 7 are provided with bolt holes, each group of corresponding connecting lugs 7 are fixedly connected by a second connecting bolt 8, and the connecting lugs 7 are integrally extended from the front end cover 2 and the rear end cover 3; the number of the second coupling bolts 8 of the motor is equal to that of the first coupling bolts 4, and the distance from any one second coupling bolt 8 to two first coupling bolts 4 is different between the two first coupling bolts 4 in the circumferential direction.

The reinforcing protrusion 6 is in the shape of circular arc protrusion on the cross section of the motor, and the cross section of the motor is a section perpendicular to the axis of the motor.

While the foregoing is directed to embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. A high-speed motor of a commercial drum washing machine is provided with a stator (1), a front end cover (2) and a rear end cover (3), wherein the front end cover (2) and the rear end cover (3) are connected by at least three first connecting bolts (4) distributed circumferentially, two ends of each first connecting bolt (4) respectively extend out of the outer end faces of the front end cover (2) and the rear end cover (3), and the high-speed motor is characterized in that: the motor has cylinder shell (5) of parcel stator (1), the preceding terminal surface and the rear end face of shell (5) respectively with the interior terminal surface tang formula cooperation of front end housing (2) and rear end cap (3).

2. The high-speed motor for a commercial drum washing machine according to claim 1, wherein: a plurality of reinforcing lugs (6) protruding outwards are distributed on the peripheral wall of the front end cover (2) and the peripheral wall of the rear end cover (3) in a circumferential mode, and the reinforcing lugs (6) extend to the inner end faces of the front end cover (2) and the rear end cover (3) in the axial direction.

3. The high-speed motor for a commercial drum washing machine according to claim 1, wherein: the utility model discloses a connection of the automobile engine, including front end housing (2), rear end cap (3), coupling ear (7) that the circumference distributes are equipped with on the periphery wall of front end housing (2) and rear end cap (3) looks closely respectively, coupling ear (7) on front end housing (2) and coupling ear (7) one-to-one on rear end cap (3), be equipped with the bolt hole on coupling ear (7), coupling ear (7) that every group corresponds are by a second coupling bolt (8) fixed connection.

4. The high-speed motor for a commercial drum washing machine according to claim 3, wherein: the connecting lug (7) is integrally extended from the front end cover (2) and the rear end cover (3).

5. The high-speed motor for a commercial drum washing machine according to claim 3, wherein: the number of the second connecting bolts (8) of the motor is equal to that of the first connecting bolts (4), and any one second connecting bolt (8) is circumferentially positioned between two first connecting bolts (4) and has different distances from the two first connecting bolts (4).

6. The high-speed motor for a commercial drum washing machine according to claim 2, wherein: the cross section of the motor of the reinforcing lug (6) is in a circular arc shape.