CN115987004A

CN115987004A - Buffering direct-drive motor applied to washing machine

Info

Publication number: CN115987004A
Application number: CN202211653462.4A
Authority: CN
Inventors: 郁亚南; 周勇; 周思岑
Original assignee: Dongguan Benmo Technology Co Ltd
Current assignee: Dongguan Benmo Technology Co Ltd
Priority date: 2022-12-21
Filing date: 2022-12-21
Publication date: 2023-04-18

Abstract

The invention relates to the technical field of direct drive motors, in particular to a buffering direct drive motor applied to a washing machine, which comprises: the motor and the braking buffer mechanism; the mounting base is fixed on the front end face of the shell, the static iron core is fixed on the mounting base, an excitation coil is sleeved on the outer side of the static iron core, the movable iron core is fixed on the movable friction plate, and the movable iron core and the static iron core are arranged correspondingly; a plurality of brake springs are arranged between the dynamic friction plate and the mounting base; the static friction plate is arranged on the rear side of the dynamic friction plate and rotates synchronously with the rotating shaft; a braking buffer mechanism is arranged on the direct drive motor, and under the condition of power failure, a braking spring is reset to enable a dynamic friction plate and a static friction plate to rub with each other, so that the buffer deceleration and braking of a rotating shaft are realized; directly acts on the rotating shaft, effectively and quickly brakes, has simple structure and is beneficial to reducing the manufacturing cost and the internal space of the washing machine.

Description

Buffering direct-drive motor applied to washing machine

Technical Field

The invention relates to the field of direct drive motor design, in particular to a buffering direct drive motor applied to a washing machine.

Background

The direct drive motor is a motor which is directly connected to a load under the control of a drive system to realize the direct drive of the load. The motor has the advantages of large torque, high positioning precision, stable motion, high response speed, low vibration, low noise, energy conservation, long service life, convenient maintenance and the like.

Along with the development of science and technology, a lot of laundry machines can adopt and directly drive the motor, and the motor direct action saves parts such as belt and belt pulley in the inner tube, reduces friction and vibration to realize the quiet of operation steadily. In order to meet the dewatering and safe self-locking functions of the washing machine, a clutch is arranged and acts on a rotating shaft of the direct drive motor to realize the braking of the washing machine; the braking mode and the braking structure have the problems of complex mechanical structure and large occupied space, and are not beneficial to controlling the cost and the internal space of the washing machine.

Disclosure of Invention

The invention aims to overcome the defects in the prior art and provides a buffering direct-drive motor which has braking and speed reducing functions and is applied to a washing machine.

The invention adopts the following technical scheme:

a buffered direct drive motor for use in a washing machine comprising:

the motor comprises a stator, a rotor arranged on the inner side of the stator, a rotating shaft synchronously rotating with the rotor and a shell arranged outside the stator and the rotor, wherein one end of the rotating shaft penetrates out of the front end face of the shell; and

the braking buffer mechanism comprises an installation base, a static iron core, a movable friction plate and a static friction plate which are all sleeved outside the rotating shaft; the mounting base is fixed on the front end face of the shell, the static iron core is fixed on the mounting base, an excitation coil is sleeved on the outer side of the static iron core, the movable iron core is fixed on the movable friction plate, and the movable iron core and the static iron core are arranged correspondingly; a plurality of brake springs are arranged between the dynamic friction plate and the mounting base; the static friction plate is arranged on the rear side of the dynamic friction plate and rotates synchronously with the rotating shaft.

Preferably, the upper end of the shell is provided with a wire holder, and the wire holder is electrically connected with the stator.

Preferably, both ends of the brake spring are arranged at the corners of the dynamic friction plate and the mounting base.

Preferably, a flange is fixedly arranged at the front end of the static friction plate, a through hole is formed in the center of the flange, the rotating shaft is arranged in the through hole, a flat key is arranged on the outer wall of the rotating shaft, a key position is arranged on the through hole, and the flat key is matched with the key position to enable the flange and the rotating shaft to rotate synchronously.

Preferably, the flange and the edge of the static friction plate are both provided with connecting holes, and fastening bolts are arranged in the connecting holes to fixedly connect the flange and the static friction plate.

Preferably, a bearing is arranged in the housing, and the bearing is sleeved outside the rotating shaft.

Preferably, a gap is reserved between the dynamic friction plate and the static friction plate, and the front end surface of the dynamic friction plate and the rear end surface of the static friction plate are both provided with a brake plate.

Preferably, the outer side of the rotating shaft is provided with a flat position.

Preferably, the shell comprises a protective shell, an upper cover and a bottom plate, the upper cover and the base are respectively arranged at two ends of the protective shell, and the protective shell is arranged at the outer side of the stator.

Preferably, circular through holes are formed in the center portions of the mounting base, the static iron core, the movable iron core and the movable friction plate in a penetrating mode, and the rotating shaft penetrates through the through holes.

The buffering direct drive motor applied to the washing machine has the following beneficial effects:

the invention relates to a buffering direct-drive motor applied to a washing machine.A braking buffering mechanism is arranged on the direct-drive motor, and a braking spring is reset to enable a dynamic friction plate and a static friction plate to rub with each other under the condition of power failure, so that buffering deceleration and braking of a rotating shaft are realized; directly acts on the rotating shaft, effectively and quickly brakes, has simple structure and is beneficial to reducing the manufacturing cost and the internal space of the washing machine.

Drawings

FIG. 1 is a schematic view of the overall structure of a buffering direct drive motor applied to a washing machine according to the present invention;

FIG. 2 is a schematic view of another angle overall structure of the buffering direct drive motor applied to the washing machine according to the present invention;

fig. 3 is a schematic view of the overall structure of the motor in fig. 1;

FIG. 4 is a schematic view of the overall structure of the brake cushioning mechanism of FIG. 1;

fig. 5 is a sectional view of the buffering direct drive motor applied to the washing machine of fig. 1.

Reference numbers in the figures: 10-a motor; 11-a stator; 12-a rotor; 13-a rotating shaft; 131-flat position; 132-a flat bond; 14-a housing; 141-a protective shell; 142-an upper cover; 143-a base plate; 15-a wire holder; 16-a bearing; 20-a brake buffer mechanism; 21-mounting a base; 22-a stationary core; 23-a movable iron core; 24-dynamic friction plates; 25-static friction plate; 26-a field coil; 27-a brake spring; 28-a flange; 281-punching; 282-key position; 29-brake pad.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 5, the buffering direct drive motor applied to the washing machine of the present invention comprises a motor 10 and a braking buffer mechanism 20; the motor 10 is directly connected with the inner drum of the washing machine to provide power; the braking buffer mechanism 20 is arranged on the motor 10 to realize braking and deceleration of the direct drive motor 10.

Specifically, as shown in fig. 3, in the present embodiment, the motor 10 includes a stator 11, a rotor 12 disposed inside the stator 11, a rotating shaft 13 rotating synchronously with the rotor 12, and a housing 14 disposed outside the stator 11 and the rotor 12; one end of the rotating shaft 13 penetrates through the front end face of the shell 14 and is directly assembled and connected with the inner cylinder of the washing machine to drive the inner cylinder of the washing machine to rotate. The housing 14 includes a protective casing 141, an upper cover 142 and a bottom plate 143, the upper cover 142 and the bottom plate 143 are respectively disposed at the upper and lower ends of the protective casing 141, and the protective casing 141 is disposed outside the stator 11; a wire holder 15 is provided at the upper end of the housing 14, and an inward end of the wire holder 15 is connected to the stator 11.

In some embodiments, in order to reduce the wear of the rotating shaft 13 during rotation, the rotating shaft 13 is provided with a bearing 16 at a position penetrating out of the housing 14, and the bearing 16 is sleeved outside the rotating shaft 13; in order to ensure that the rotary shaft 13 can be connected to the inner cylinder and move synchronously, a flat 131 is provided on the outside of the rotary shaft 13.

Specifically, as shown in fig. 4, in the present embodiment, the braking buffer mechanism 20 includes a mounting base 21, a stationary core 22, a movable core 23, a movable friction plate 24 and a stationary friction plate 25, all of which are sleeved outside the rotating shaft 13; wherein the rotating shaft 13 is rotatable inside the mounting base 21, the stationary core 22, the movable core 23, and the movable friction plate 24, and the stationary friction plate 25 is rotated in synchronization with the rotating shaft 13. The mounting base 21 is fixed on the front end face of the outer shell 14, the static iron core 22 is fixed on the mounting base 21, the excitation coil 26 is sleeved outside the static iron core 22, the movable iron core 23 is fixed on the movable friction plate 24, and the movable iron core 23 and the static iron core 22 are correspondingly arranged; a plurality of braking springs 27 are arranged between the dynamic friction plate 24 and the mounting base 21, and two ends of each braking spring 27 are arranged at the corners of the dynamic friction plate 24 and the mounting base 21.

In some embodiments, the front end of the static friction plate 25 is provided with a flange 28 fixedly connected by bolts, the center of the flange 28 is provided with a through hole 281, and the rotating shaft 13 passes through the through hole 281; meanwhile, the outer wall of the rotating shaft 13 is provided with a flat key 132, the inner side of the perforation 281 is provided with a corresponding key position 282, and the flat key 132 is matched with the key position 282 to enable the flange 28 to synchronously rotate with the rotating shaft 13.

In some embodiments, a gap is left between the dynamic friction plate 24 and the static friction plate 25, the front end surface of the dynamic friction plate 24 and the rear end surface of the static friction plate 25 are both provided with brake plates 29, braking and deceleration of the washing machine inner drum are realized through contact of the two brake plates 29, and the dynamic friction plate 24 and the static friction plate 25 are prevented from directly contacting, so that the service life of the brake buffer mechanism 20 is prolonged.

The working principle of the buffering direct drive motor 10 applied to the washing machine related by the invention is as follows: after the stator 11 is electrified, induced electromotive force is generated to serve as a rotating magnetic field, and then electromagnetic torque is generated to enable the rotor 12 to rotate inside the stator 11, so that the rotating shaft 13 rotates to drive the inner drum of the washing machine to rotate.

Under the condition of electrifying, the movable iron core 23 and the static iron core 22 attract each other under the action of magnetic force, the brake spring 27 is compressed, the movable friction plate 24 is not contacted with the static friction plate 25 at the moment, and the rotating shaft 13 normally rotates; when braking and buffering deceleration are needed, the power supply of the braking buffer mechanism 20 is stopped, the movable iron core 23 and the static iron core 22 lose magnetic force, the braking spring 27 is reset immediately, the movable friction plate 24 moves towards the static friction plate 25, and finally the braking plate 29 between the movable iron core and the static iron core is contacted, so that the static friction plate 25 decelerates or stops rotating, and the rotating shaft 13 also decelerates or stops rotating because the static friction plate 25 and the rotating shaft 13 synchronously move.

The invention relates to a buffering direct drive motor applied to a washing machine.A braking buffering mechanism is arranged on the direct drive motor, and a braking spring is reset to enable a dynamic friction plate and a static friction plate to rub with each other under the condition of power failure, so that the buffering deceleration and braking of a rotating shaft are realized; directly acts on the rotating shaft, effectively and quickly brakes, has simple structure and is beneficial to reducing the manufacturing cost and the internal space of the washing machine.

The above examples only show several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a be applied to washing machine's buffering and directly drive motor which characterized in that: the method comprises the following steps:

the braking buffer mechanism comprises a mounting base, a static iron core, a movable friction plate and a static friction plate which are all sleeved outside the rotating shaft; the mounting base is fixed on the front end face of the shell, the static iron core is fixed on the mounting base, an excitation coil is sleeved on the outer side of the static iron core, the movable iron core is fixed on the movable friction plate, and the movable iron core and the static iron core are arranged correspondingly; a plurality of brake springs are arranged between the dynamic friction plate and the mounting base; the static friction plate is arranged on the rear side of the dynamic friction plate and rotates synchronously with the rotating shaft.

2. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: the upper end of shell is equipped with the wire holder, wire holder and stator electric connection.

3. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: and two ends of the brake spring are arranged at the corners of the dynamic friction plate and the mounting base.

4. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: the front end of the static friction plate is fixedly provided with a flange, the central part of the flange is provided with a through hole, the rotating shaft is arranged in the through hole, the outer wall of the rotating shaft is provided with a flat key, the through hole is provided with a key position, and the flat key is matched with the key position to enable the flange and the rotating shaft to synchronously rotate.

5. The buffering direct drive motor applied to the washing machine as claimed in claim 4, wherein: and the flange and the static friction plate are fixedly connected by virtue of fastening bolts arranged in the connecting holes.

6. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: the bearing is arranged in the shell and sleeved outside the rotating shaft.

7. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: a gap is reserved between the dynamic friction plate and the static friction plate, and the front end face of the dynamic friction plate and the rear end face of the static friction plate are both provided with a brake plate.

8. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: the outer side of the rotating shaft is provided with a flat position.

9. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: the shell comprises a protective shell, an upper cover and a bottom plate, the upper cover and the base are respectively arranged at two ends of the protective shell, and the protective shell is arranged at the outer side of the stator.

10. The buffering direct drive motor applied to the washing machine as claimed in claim 1, wherein: circular through holes are formed in the central parts of the mounting base, the static iron core, the movable iron core and the movable friction plate in a penetrating mode, and the rotating shaft penetrates through the through holes.