CN220132583U

CN220132583U - Motor mounting assembly and washing machine

Info

Publication number: CN220132583U
Application number: CN202321554313.2U
Authority: CN
Inventors: 张强; 王忠卿; 潘光辉
Original assignee: Hefei General Machinery Product Inspect Institute Co ltd; TCL Home Appliances Hefei Co Ltd
Current assignee: Hefei General Machinery Product Inspect Institute Co ltd; TCL Home Appliances Hefei Co Ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2023-12-05
Anticipated expiration: 2033-06-15

Abstract

The embodiment of the utility model provides a motor installation assembly and a washing machine, wherein the motor installation assembly comprises: the first mounting foot is arranged below the outer cylinder along the gravity direction and is used for mounting one end of the motor, which is close to the door body of the washing machine; the second installation foot sets up in the below of urceolus along the gravity direction, and with first installation foot interval, the second installation foot is used for installing the one end that the motor kept away from the washing machine door body, and the second installation foot sets up for motor axis direction slope to with the fixed motor of belt cooperation. The motor is born through the belt to the vertical direction, can be blocked by the second installation foot when motor horizontal direction moves, need not to set up the screw that carries out tight fit with second installation foot and motor, both can realize bearing the motor, be unlikely to connect too tightly again, can reduce the vibration and the noise of transmitting the urceolus when motor vibrates, and then reduce the vibration of whole machine.

Description

Motor mounting assembly and washing machine

Technical Field

The utility model relates to the technical field of washing machines, in particular to a motor installation assembly and a washing machine.

Background

In a drum washing machine using a brushless DC motor to drive an inner drum to rotate, the brushless DC motor is required to be mounted on an outer drum, motor mounting legs are divided into two ends, a front end close to a door body and a rear end far away from the door body. In the related art, the rear end of the motor mounting foot is fastened on the outer cylinder through a screw, so that the vibration of the motor can be greatly transferred to the outer cylinder, and the vibration and noise radiation of the outer cylinder are increased. And, the higher the screw fastening degree of motor installation foot rear end is, the noise of complete machine is also bigger.

Disclosure of Invention

The embodiment of the utility model provides a motor installation assembly and a washing machine, which can reduce the transmission probability of motor vibration to an outer cylinder, thereby reducing the vibration and noise radiation of the outer cylinder.

In a first aspect, an embodiment of the present utility model provides a motor installation assembly, which is applied to a washing machine, where the washing machine includes an outer cylinder, an inner cylinder, and a motor, the outer cylinder is sleeved on the outer side of the inner cylinder, the motor and the inner cylinder are driven by a belt to drive the inner cylinder to rotate, and the motor is installed on the outer cylinder through the motor installation assembly; the motor mounting assembly includes:

the first mounting foot is arranged below the outer cylinder along the gravity direction and is used for mounting one end of the motor, which is close to the door body of the washing machine;

the second installation foot along the gravity direction set up in the below of urceolus, and with first installation foot interval, the second installation foot is used for the installation the motor is kept away from the one end of washing machine door body, the second installation foot for motor axis direction slope sets up, in order to with the belt cooperation is fixed the motor.

Optionally, the second mounting leg is inclined downward from the outer cylinder, and the inclination angle is greater than 0 ° and less than 90 °.

Optionally, the inclination angle of the second mounting leg is greater than 0 ° and less than or equal to 60 °.

Optionally, the motor mounting assembly further includes:

the mounting sleeve is used for being arranged at one end of the motor, which is far away from the washing machine door body, and is used for being sleeved with the second mounting pin so as to mount the motor at one end, which is far away from the washing machine door body.

Optionally, the mounting sleeve has elasticity; and/or

The inner diameter of the mounting sleeve is larger than or equal to the outer diameter of the second mounting foot.

Optionally, the first mounting leg is inclined downward from the outer cylinder and is parallel to the second mounting leg.

Optionally, the motor mounting assembly further includes:

the vibration isolation sleeve is elastic, is used for being arranged at one end, close to the washing machine door body, of the motor, and is used for being sleeved with the first mounting pin so as to enable the motor to be mounted at one end, close to the washing machine door body, of the motor.

In a second aspect, an embodiment of the present utility model also provides a washing machine including:

an inner drum for carrying laundry;

the outer cylinder is sleeved on the outer side of the inner cylinder;

the motor is driven by the inner cylinder through a belt so as to drive the inner cylinder to rotate;

a motor mounting assembly as claimed in any preceding claim for mounting the motor to the outer barrel.

Optionally, the first mounting leg and the second mounting leg are respectively integrally arranged with the outer cylinder.

Optionally, the inner cylinder comprises a body and a belt wheel arranged on one side of the body away from the door body of the washing machine;

the motor comprises a machine body and a rotating shaft, the rotating shaft protrudes out of the machine body from one side, deviating from the door body of the washing machine, of the machine body, the belt is sleeved with the belt wheel and the rotating shaft, and the belt is provided with pretightening force so as to be matched with the second mounting foot to fix the machine body.

In the motor installation assembly and the washing machine provided by the embodiment of the utility model, the second installation foot which is obliquely arranged can decompose the force born by the motor into the horizontal direction and the vertical direction when the motor is borne, the force in the vertical direction is counteracted by the pretightening force of the belt, namely, the motor is borne by the belt in the vertical direction, the motor can be blocked by the second installation foot when moving in the horizontal direction, and a screw which is tightly matched with the second installation foot and the motor is not required to be arranged, so that the motor can be borne, the motor is not too tightly connected, the vibration and noise transmitted to the outer cylinder when the motor vibrates can be reduced, and the vibration of the whole machine is further reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the utility model and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.

For a more complete understanding of the present utility model and the advantages thereof, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which like reference numerals represent like parts throughout the following description.

Fig. 1 is a schematic view of a structure of a related art washing machine according to an embodiment of the present utility model.

Fig. 2 is an exploded view of a part of the structure of the washing machine shown in fig. 1.

Fig. 3 is a schematic structural view of a washing machine according to an embodiment of the present utility model.

Fig. 4 is an exploded view of a part of the structure of the washing machine shown in fig. 3.

Fig. 5 is a comparative diagram of noise test using motor screw tightening and canceling motor screw tightening according to an embodiment of the present utility model.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present utility model based on the embodiments of the present utility model.

Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a washing machine in the prior art according to an embodiment of the present utility model, and fig. 2 is an exploded structural diagram of a part of the structure of the washing machine shown in fig. 1. The embodiment of the utility model provides a washing machine 1, wherein the washing machine 1 can be a drum washing machine, the washing method of the drum washing machine is designed by simulating the principle of beating clothes by a hammer, and the washing machine is formed by repeatedly moving a stainless steel inner cylinder, a mechanical program controller, a casing which is subjected to three-layer protection by phosphating, electrophoresis and spraying, and a plurality of heavy cement blocks for balancing the huge centrifugal force generated when the drum rotates, and washing powder and water are combined to clean the clothes. That is, the inner cylinder of the drum washing machine is in a horizontal type, the opening of the inner cylinder faces to the horizontal direction, the inner cylinder can rotate around the axis of the horizontal direction, and the lifting ribs in the inner cylinder are combined to drive clothes to turn over, so that the clothes are uniformly washed or dried.

Illustratively, the washing machine 1 includes an outer tub 10, an inner tub 20, a motor 30, and a belt 40.

The washing machine 1 may further include a cabinet having a receiving space to receive the outer tub 10, the inner tub 20, the motor 30, the belt 40, and the like, and a door (not shown). The door body is rotatably connected with the box body to open or close the clothes putting opening of the washing machine 1. The box body is mainly formed by the appearance of the washing machine 1, and can be square.

The outer tub 10 is used for containing water for washing, and the outer tub 10 may be installed in the cabinet by a suspension spring and a support bar, and the suspension spring and the support bar may have elasticity to absorb at least part of vibration during operation of the washing machine 1. The outer cylinder 10 may have a cylindrical shape, and the outer cylinder 10 may be divided into a front case close to the door body and a rear case away from the door body, and the front case and the rear case may be detachably connected to facilitate installation of devices inside the outer cylinder 10.

The inner cylinder 20 is used for carrying clothes, and lifting ribs can be arranged in the inner cylinder 20 to drive the clothes to turn over. The inner cylinder 20 is disposed in the outer cylinder 10 and is disposed coaxially with the outer cylinder 10, that is, the outer cylinder 10 is sleeved outside the inner cylinder 20. An opening may be provided on a side of the rear housing of the outer cylinder 10 facing away from the door body, and the inner cylinder 20 is filled in the opening, so that the inner cylinder 20 is in transmission connection with the motor 30.

The motor 30 is used to drive the inner cylinder 20 to rotate. Illustratively, the motor 30 of an embodiment of the present utility model may be a brushless DC motor (BLDC: brushless Direct Current Motor) that is essentially a permanent magnet synchronous motor that uses a DC power input and is converted to a three-phase AC power source with position feedback using an inverter. In the drum washing machine using the brushless dc motor, the brushless dc motor is required to be installed at the outer side of the outer tub 10, and the driving force is transmitted through the belt 40 to indirectly drive the rotation of the inner tub 20.

Wherein, the motor mounting foot divide into both ends, is close to the front end of the door body and keeps away from the rear end of the door body. In the related art, the rear end of the motor mounting foot is fastened on the outer cylinder through a screw, so that the vibration of the motor can be greatly transferred to the outer cylinder, and the vibration and noise radiation of the outer cylinder are increased. And, the higher the screw fastening degree of motor installation foot rear end is, the noise of complete machine is also bigger.

In order to reduce the occurrence of the above-described situation, the embodiment of the present utility model improves the motor mounting structure, and will be described below with reference to the accompanying drawings.

Referring to fig. 3 and 4 in combination with fig. 1 and 2, fig. 3 is a schematic structural diagram of a washing machine according to an embodiment of the present utility model, and fig. 4 is an exploded structural diagram of a part of the structure of the washing machine shown in fig. 3. The embodiment of the present utility model also provides a motor mounting assembly 50, the motor mounting assembly 50 being used to mount the motor 30 to the outer tub 10. Illustratively, the motor mounting assembly 50 includes a first mounting foot 51 and a second mounting foot 52. The first mounting leg 51 is disposed below the outer tub 10 in a gravitational direction, and the first mounting leg 51 is used for mounting one end of the motor 30 near the door of the washing machine. The second mounting leg 52 is disposed below the outer cylinder 10 in the gravitational direction and spaced apart from the first mounting leg 51. The second mounting leg 52 is used for mounting an end of the motor 30 remote from the door of the washing machine. That is, the first mounting leg 51 and the second mounting leg 52 together bear the motor 30, the number of the first mounting leg 51 and the second mounting leg 52 may be two, respectively, and each first mounting leg 51 corresponds to one second mounting leg 52 along the horizontal direction, respectively, so as to improve the stability of bearing the motor 30.

When the motor 30 is installed, the axial direction of the motor 30 is parallel to the horizontal direction, or approximately parallel to the horizontal direction, that is, the axial direction has a small included angle with the horizontal direction. The second mounting leg 52 is disposed obliquely with respect to the axial direction of the motor 30 to fix the motor 30 in cooperation with the belt 40.

In the motor mounting assembly 50 provided by the embodiment of the utility model, the second mounting feet 52 which are obliquely arranged can decompose the force born by the motor 30 into the horizontal direction and the vertical direction when the motor 30 is borne, and the force in the vertical direction is counteracted by the pretightening force of the belt 40, namely, the motor 30 is borne by the belt 40 in the vertical direction, the motor 30 can be blocked by the second mounting feet 52 when moving in the horizontal direction, and the screw which is tightly matched with the second mounting feet 52 and the motor 30 is not required to be arranged, so that the motor 30 can be borne, the motor 30 is not too tightly connected, the vibration and noise transmitted to the outer cylinder when the motor 30 vibrates can be reduced, and the vibration of the whole motor is further reduced.

The first mounting leg 51 and the second mounting leg 52 are integrally formed with the outer cylinder 10, and the first mounting leg 51 and the second mounting leg 52 can be integrally formed during manufacturing, so that manufacturing is facilitated, manufacturing steps are saved, and connection stability can be improved.

Illustratively, the inner tub 20 includes a body 21, that is, a member forming a tub space, and a pulley 22, the body 21 being for receiving laundry. The belt pulley 22 is arranged on one side of the body 21, which is away from the door body of the washing machine, and in another angle, the belt pulley 22 protrudes out of the body 21 from one side of the body 21, which is away from the door body of the washing machine. The belt wheel 22 is used for receiving the driving of the motor 30 to drive the body 21 to rotate so as to drive the clothes to turn over, and wash or dry the clothes.

The motor 30 includes a main body 31 and a rotating shaft 32, the main body 31 is a main component of the motor 30, a control circuit or a driving circuit can be arranged in the main body 31, and the driving circuit receives a control signal of a main control board of the washing machine 1 to operate. The rotating shaft 32 protrudes from the machine body 31 from one side of the machine body 31 away from the door body of the washing machine, the rotating shaft 32 is a transmission shaft for driving a load by the motor 30, and driving force of the motor 30 is transmitted to the load through the rotating shaft 32.

The belt 40 is sleeved with the pulley 22 and the rotating shaft 32, so that driving force generated when the rotating shaft 32 moves is transmitted to the body 21 of the inner cylinder 20 through the pulley 22, and the body 21 is driven to rotate. The belt 40 has a pre-tightening force to cooperate with the second mounting leg 52 to fix the machine body 31. It will be appreciated that the second mounting leg 52 is inclined, and the motor 30 is under an upward tightening force due to the pre-tightening force of the belt 40, so as to ensure that the motor 30 is pressed onto the second mounting leg 52 obliquely upward, thereby preventing the motor 30 from being separated from the second mounting leg 52. Fastening screws and gaskets of the motor can be omitted, transmission of motor vibration to the outer cylinder can be reduced, and vibration and noise of the outer cylinder are reduced.

The second mounting leg 52 is inclined downward from the outer cylinder 10 by an angle greater than 0 ° and less than 90 °, that is, the motor 30 is secured by a tightening force in an oblique direction. To ensure that the motor 30 can be better supported, the inclination angle of the second mounting leg 52 may be set to a value such as 0 ° to 60 °, for example, the inclination angle may be set to 15 °, 20 °, 30 °, 35 ° or 45 °, etc., to ensure that the second mounting leg 52 can hook the body 31 of the motor 30, that is, to provide at least part of the supporting force, and to prevent the body 31 from sliding off when the rotating shaft 32 is not sleeved with the belt 40.

In order to facilitate connection with the second mounting leg 52, a mounting sleeve may also be provided on the body 31 of the motor 30. For example, the motor mounting assembly 50 further includes a mounting sleeve 53, the mounting sleeve 53 is configured to be disposed at an end of the body 31 of the motor 30 away from the door of the washing machine, and the mounting sleeve 53 is configured to be sleeved with the second mounting leg 52, so as to mount the body 31 of the motor 30 at an end thereof away from the door of the washing machine. It will be appreciated that if the mounting sleeve 53 is not provided, the body 31 of the motor 30 and the second mounting leg 52 cannot be connected, and if the motor 30 is fixed only by the belt 40, the mounting stability and reliability of the motor 30 will be poor, and the driving stability of the inner cylinder 20 will be affected.

Illustratively, the mounting sleeve 53 has through holes that are adapted to the shape of the second mounting feet 52, such as being cylindrical, for ease of installation. Wherein, the inner diameter of the mounting sleeve 53 is greater than or equal to the outer diameter of the second mounting leg 52, that is, the mounting sleeve 53 can be sleeved with the second mounting leg 52 and abutted, or the mounting sleeve is loosely connected, and the motor 30 is matched with the pull-up motor 30 through the belt 40, so that the motor 30 is jointly fixed, the transmission of motor vibration caused by tight mounting of the motor can be reduced, and the vibration and noise of the outer cylinder and the whole machine are further reduced.

Illustratively, the mounting sleeve 53 may have elasticity to avoid being rigidly connected to the second mounting leg 52, and when there is vibration between the mounting sleeve 53 and the second mounting leg 52, the elastic mounting sleeve 53 may absorb at least part of the vibration force, so that the transmission of the vibration of the motor 30 to the outer cylinder 10 may be reduced, thereby reducing the vibration of the outer cylinder 10 and the noise of the whole machine.

It should be noted that, the first mounting leg 51 may be disposed along a horizontal direction (not shown in the drawings), that is, the first mounting leg 51 is not inclined, and only the second mounting leg 52 is disposed to be inclined, so that the first mounting leg 51 and the belt 40 both bear the load on the motor 30 from the gravity direction, and the force applied in the horizontal direction can be counteracted and borne by the second mounting leg 52 and the mounting sleeve 53, so that the bearing capacity of the motor 30 can be improved, and the stability of mounting the motor 30 can be improved.

Of course, for the convenience of manufacturing and the improvement of manufacturing efficiency, the first mounting leg 51 may be disposed parallel to the second mounting leg 52, that is, the first mounting leg 51 may be inclined downward from the outer cylinder 10 and disposed parallel to the second mounting leg 52. The first mounting leg 51 and the second mounting leg 52 are all inclined, under the action of the pretightening force of the belt 40, the two ends of the motor 30, which are close to the door body of the washing machine and far away from the door body of the washing machine, are obliquely pressed upwards on the first mounting leg 51 and the second mounting leg 52, so that the motor 30 can be prevented from falling off from the first mounting leg 51 and the second mounting leg 52, the motor 30 is mounted and fixed in such a way, fastening screws and gaskets can be omitted, the transmission of the vibration of the motor 30 to the outer cylinder 10 can be reduced, and the vibration and the noise of the whole outer cylinder 10 can be reduced.

Illustratively, the motor mount assembly 50 further includes a vibration isolator 54, the vibration isolator 54 having elasticity, the vibration isolator 54 being configured to be disposed at an end of the motor 30 adjacent to the door of the washing machine. The vibration isolation sleeve 54 is used for sleeving the first mounting leg 51 so as to mount the machine body 31 of the motor 30 near one end of the door body of the washing machine. It will be appreciated that the vibration isolator 54 facilitates connection of the motor 30 to the first mounting leg 51, and absorbs at least a portion of the vibration of the motor 30, thereby reducing the transmission of the vibration of the motor 30 to the first mounting leg 51 and the outer tub 10, and further reducing the vibration of the outer tub 10 and the overall noise.

In installing the motor 30, the installation process may be: the motor 30 is pushed in from the lower rear side to the upper front side in the inclined direction, namely the mounting sleeve 53 and the vibration isolation sleeve 54 are pushed into the second mounting leg 52 and the first mounting leg 51 respectively in an inclined direction, then the belt 40 is mounted, the mounting sleeve 53 and the vibration isolation sleeve 54 are stressed by the upward inclined tension force under the pretightening force of the belt 40, the motor 30 is ensured to be pressed on the first mounting leg 51 and the second mounting leg 52, so that the motor 30 is prevented from falling off, the fastening screw and the gasket can be omitted, the transmission of the vibration of the motor 30 to the outer cylinder 10 can be reduced, and the vibration and the overall noise of the outer cylinder 10 can be reduced.

In order to test the vibration reduction effect of the motor mounting assembly 50 according to the embodiment of the present utility model, an experimental test is provided, and a noise test is performed on the empty cylinder in the motor screw fastening state and a noise test is performed on the empty cylinder in the motor screw removing state, where the motor screw removing corresponds to fixing the motor 30 by adopting the motor mounting assembly 50 according to the embodiment of the present utility model, so as to obtain a test graph as shown in fig. 5, and fig. 5 is a comparison graph of the noise test using motor screw fastening and canceling motor screw fastening provided by the embodiment of the present utility model. As can be seen in fig. 5, the use of the motor mounting assembly 50 of the present embodiment to secure the motor 30 reduces the noise by at least 2.5 dB.

In the motor mounting assembly 50 and the washing machine 1 provided by the embodiment of the utility model, the first mounting foot 51 and the second mounting foot 52 which are obliquely arranged can decompose the force born by the motor 30 into the horizontal direction and the vertical direction when the motor 30 is borne, the force in the vertical direction is counteracted by the pretightening force of the belt 40, namely, the motor 30 is borne by the belt 40 in the vertical direction, the motor 30 can be blocked by the first mounting foot 51 and the second mounting foot 52 when moving in the horizontal direction, and screws for tightly matching the second mounting foot 52 with the motor 30 are not required to be arranged, so that the motor 30 can be borne, the connection is not too tight, the vibration and noise transferred to the outer cylinder when the motor 30 vibrates can be reduced, and the vibration of the whole washing machine is further reduced.

The motor installation assembly and the washing machine provided by the embodiment of the utility model are described in detail, and specific examples are applied to illustrate the principle and the implementation of the utility model, and the description of the above embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present utility model, the present description should not be construed as limiting the present utility model.

Claims

1. The motor installation assembly is characterized by being applied to a washing machine, wherein the washing machine comprises an outer cylinder, an inner cylinder and a motor, the outer cylinder is sleeved on the outer side of the inner cylinder, the motor and the inner cylinder are driven by a belt to drive the inner cylinder to rotate, and the motor is installed on the outer cylinder through the motor installation assembly; the motor mounting assembly includes:

2. The motor mounting assembly of claim 1 wherein the second mounting feet are inclined downwardly from the outer barrel at an angle greater than 0 ° and less than 90 °.

3. The motor mounting assembly of claim 2, wherein the second mounting foot has an inclination angle greater than 0 ° and less than or equal to 60 °.

4. A motor mounting assembly according to claim 2 or 3, further comprising:

5. The motor mounting assembly of claim 4, wherein the mounting sleeve has elasticity; and/or

6. A motor mounting assembly according to claim 2 or 3, wherein the first mounting feet are inclined downwardly from the outer barrel and are arranged parallel to the second mounting feet.

7. The motor mounting assembly of claim 6, further comprising:

8. A washing machine, comprising:

an inner drum for carrying laundry;

the outer cylinder is sleeved on the outer side of the inner cylinder;

a motor mounting assembly as claimed in any one of claims 1 to 7 for mounting the motor to the outer barrel.

9. The washing machine as claimed in claim 8, wherein the first and second mounting legs are integrally provided with the outer tub, respectively.

10. The washing machine as claimed in claim 8, wherein the inner tub includes a body and a pulley provided at a side of the body facing away from the washing machine door;