CN105200719B - A motor protection cover - Google Patents

Abstract

The invention provides a motor protection cover, the motor protection cover includes a cover body and a cover body installation part, the cover body installation part is fixedly installed on the lower end surface of the casing, and the cover body is arranged between the casing and the motor; The cover body has a covering surface, and the covering surface covers the motor. In the present invention, a motor protective cover is arranged on the upper part of the motor, and the motor protective cover covers the upper part of the motor. When water leakage occurs in the washing machine, the motor protective cover can prevent the leaked water from entering the inside of the motor and causing motor failure or electric leakage. Therefore, the present invention can prevent the motor of the washing machine from being damaged or leaking electricity due to water leakage, thereby ensuring personal safety and the service life of the motor.

Description

A motor protection cover

technical field

The invention relates to the field of washing machines, in particular to a motor protection cover.

Background technique

As a daily household appliance, washing machine liberates people from the labor of doing laundry, so it is very popular among users. Existing washing machines are usually powered by a motor, which transmits power to the pulsator of the washing machine through a deceleration clutch, and drives the pulsator to rotate to achieve washing and dehydration. Therefore, the motor is an indispensable important part of the washing machine. However, the existing washing machine There is no special protection device for the motor.

The existing application number is 201210414891.6, which is a Chinese invention patent for a washing machine reducer and motor installation structure and washing machine. The invention discloses a washing machine reducer and motor installation structure and a washing machine. The motor includes a stator and a rotor, and the reducer includes Shell and clutch mechanism, the motor is installed outside the reducer shell, the stator and rotor are coaxially sleeved outside the reducer input shaft, the stator is fixedly connected to the reducer shell, the rotor is fixedly connected to the reducer input shaft, and the rotor is sleeved on the stator Externally, the clutch mechanism is set in the space formed by the stator and the rotor; the stator includes a supporting connector and a winding fixing member, which are integrally structured, and the supporting connector is in a concave shape, including a peripheral wall and a bottom, and the bottom is provided with a perforation. The coaxial sleeve is outside the input shaft of the reducer, and is fixedly connected with the reducer casing through the bottom, and the winding fixing part is located on the outer ring of the opening end of the circumferential wall of the support connector. The invention improves the assembly efficiency of the washing machine, reduces the assembly cost, optimizes the structure, has higher reliability, and improves the overall performance of the washing machine.

The above-mentioned invention patent fixedly connects the stator of the motor directly to the housing of the reducer to realize the installation of the motor, and both the stator and the rotor of the motor are directly exposed from the upper part. Therefore, if the washing machine has a water leakage fault, the washing water may enter directly from the upper part of the motor, causing electric leakage or failure of the motor; or if other control components of the washing machine fail to cause excessive water intake, the water overflows from the bucket and falls into the washing machine shell The ground between the bucket and the outer barrel, and then splashed on the winding of the motor, causing the motor to leak or malfunction.

Therefore, how to protect the motor from being damaged due to water ingress has become an urgent technical problem to be solved.

Contents of the invention

The present invention provides a motor protection cover, mainly to prevent the motor from being damaged due to water ingress. Specifically, the present invention adopts the following technical solutions:

A motor protection cover, the motor protection cover includes a cover body and a cover body installation part, the cover body installation part is fixedly installed on the lower end surface of the outer shell of the deceleration clutch, and the cover body is arranged between the outer shell of the deceleration clutch and the motor Between; the cover has a covering surface, and the covering surface covers the motor.

Further, the motor includes a stator and a rotor arranged outside the stator, and the stator is fixedly connected to the casing through a connecting piece, or the stator is fixed to the cover mounting part or the cover of the motor protection cover through a connecting piece connect.

Further, the center of the cover is provided with a cover opening; the deceleration clutch also includes a clutch mechanism, the clutch mechanism includes an upper fixed plate, a clutch sleeve that can slide up and down and a lower dehydration plate, and the clutch sleeve slides up and down with the The upper fixed plate and the lower dewatering plate are meshed and connected to realize the conversion of washing and dehydrating working conditions; the upper fixed plate is fixedly connected to the lower end surface of the shell, and the upper fixed plate is arranged inside the opening of the cover.

Further, the clutch mechanism also includes a clutch driving device, the clutch driving device includes a traction motor, a driving wheel and a shift fork lever, the driving wheel is installed on the output shaft of the traction motor, and a supporting surface is provided on the circumference of the driving wheel to support The surface has a height difference in the axial direction; the head end of the shift fork rod is provided with a shift fork, the shift fork is stuck on the clutch sleeve, the middle part of the shift fork rod is provided with a support point, the support point is connected with the upper fixed plate, and the shift fork rod The tail end of the drive wheel is set on the supporting surface of the driving wheel; the traction motor and the drive wheel are set on the cover; or, the traction motor and the drive wheel are set on the shell, and the shift fork rod passes through the cover body opening.

Further, the traction motor is arranged inside the casing, the output shaft of the traction motor protrudes from the casing, and the driving wheel is arranged outside the casing; the casing is fixedly installed on the cover; or, the The shell is fixedly mounted on the shell.

Further, the cover body installation part includes a plurality of parts, which are uniformly arranged along the inner wall of the cover body opening in the circumferential direction.

Further, the surrounding edges of the cover body are turned down respectively to form a cover body turn-up structure.

Further, the cover is in the shape of an umbrella.

Further, the upper end surface of the housing is fixedly connected to the mounting plate, and the covering area of the cover is smaller than that of the mounting plate.

Further, the shell includes an upper end cover and a lower end cover, and the upper end cover and the lower end cover are connected to form a chamber, and a gear box of the deceleration clutch is arranged in the chamber; the cover installation part is installed on the lower end surface of the lower end cover .

In the present invention, a motor protective cover is arranged on the upper part of the motor, and the motor protective cover covers the upper part of the motor. When water leakage occurs in the washing machine, the motor protective cover can prevent the leaked water from entering the inside of the motor and causing motor failure. At the same time, it can effectively prevent the excessive water intake caused by the failure of other control components of the washing machine, the water overflows from the bucket, falls on the ground between the washing machine shell and the outer bucket, and then splashes on the winding of the motor, causing the motor to leak electricity or A malfunction occurs.

Therefore, the present invention can prevent the motor of the washing machine from being damaged due to water leakage, and ensure the service life of the motor to the greatest extent.

Secondly, the motor protection cover of the present invention has an umbrella-like structure as a whole, has a simple structure, low manufacturing cost, and has broad market promotion prospects.

Finally, the cover body of the motor protection cover is directly fixedly installed on the lower end surface of the casing without any influence on the assembly of other components. Therefore, the motor protection cover of the present invention is easy to install and convenient to disassemble and replace.

Description of drawings

Exploded view of the present invention of Fig. 1;

The sectional view of the assembly drawing of Fig. 2 of the present invention;

Fig. 3 is a schematic diagram of the installation structure of the deceleration clutch of the present invention;

Fig. 4 is a schematic diagram of the installation structure of the clutch device of the present invention;

Figure 5 is an exploded view of the deceleration clutch clutch part of the present invention;

Fig. 6 is a structural schematic diagram of the driving wheel of the present invention.

Explanation of symbols in the figure: 100—housing 200—upper fixed plate 210—fixed plate mounting part 220—fixed plate engaging portion 230—fork lever mounting portion 300—clutch sleeve 310—upper engaging portion 320—lower engaging portion 330—boss 400—fork lever 410—fork 420—fixed fulcrum 430—driving end 431—third transition surface 432—highest contact surface 433—fourth transition surface 434—arc groove 500—connector 510—upper mounting part 520— Reinforcing rib 530—lower end mounting part 540—flange structure 600—stator 610—winding fixing part 620—supporting connector 700—rotor 710—lower spline teeth 800—dehydration tray 900—input bushing 1000—input shaft 1100— Drive motor 1200-installation cover 1210-removable side wall 1220-reinforcing rib 1230-installation hole 1240-positioning flange 1250-installation flange 1300-driving wheel 1310-cylindrical body 1320-protruding part 1330-first transition surface 1340 - highest support surface 1350 - second transition surface 1400 - return torsion spring 1500 - return spring 1600 - motor protection cover 1610 - cover body opening 1620 - cover body installation part 1630 - cover body 1640 - cover body flanging structure.

Detailed ways

A kind of motor protective cover of the present invention is described in detail below in conjunction with accompanying drawing:

As shown in Figure 1, a motor protection cover 1600 of the present invention includes a deceleration clutch and a motor, the deceleration clutch includes a speed reducer, a housing 100 is arranged outside the speed reducer, and the lower end surface of the housing 100 is connected to the motor, and the motor protection cover includes The cover body 1630 and the cover body installation part 1620, the cover body installation part 1620 is fixedly installed on the lower end surface of the shell 100, the cover body 1630 is arranged between the shell body 100 and the motor; the cover body 1630 has a covering surface, and the The covering covers the motor.

The cover body 1630 of the motor protection cover 1600 of the present invention is arranged on the upper part of the motor, and the motor protection cover 1600 covers the upper part of the motor through the covering surface of the cover body 1630, so that the upper part of the motor is no longer directly exposed to the lower part of the mounting plate. If the washing machine leaks, the cover body 1630 can effectively prevent the water leaked from the washing machine from directly entering the motor, avoiding the failure of the motor due to water ingress, and greatly prolonging the service life of the motor. Therefore, the motor protection cover 1600 of the present invention can effectively protect the motor, and is easy to assemble without affecting the installation of the existing structure of the washing machine.

As a preferred embodiment of the present invention, the center of the cover 1630 is provided with a cover opening 1610; the deceleration clutch also includes a clutch mechanism, which includes an upper fixed plate 200 and a clutch sleeve 300 that can slide up and down. and the dehydration tray 800, the clutch sleeve 300 slides up and down to engage with the upper fixed tray 200 and the dehydration tray 800 to realize the conversion of washing and dehydration working conditions; The disk 200 is disposed inside the housing opening 1610 . The center of the cover body 1630 of the motor protection cover 1600 of the present invention is provided with a cover body opening 1610. The cover body opening 1610 is mainly used to realize the fixed installation of the upper fixed plate 200 and the casing 100. Therefore, the motor protection cover of the present invention does not It will affect the installation of the existing deceleration clutch of the washing machine, and the installation is simpler.

As a preferred embodiment of the present invention, the motor is preferably a direct-drive motor. A direct-drive motor is an abbreviation for a direct-drive motor. ). The most common application of direct drive motors is washing machines, that is, there is no belt connection between the rolling of the washing machine and the motor. The main advantage of direct drive motors is to avoid the use of transmission equipment such as transmission belts, and these transmission components are precisely the failure rate in the system. Taller components. So a system using a direct drive motor should, technically, have a lower failure rate. The direct drive motor includes a stator 600 and a rotor 700 disposed outside the stator 600, the stator 600 is fixedly connected to the casing 100 through the connector 500, or the stator 600 is connected to the cover of the motor protective cover through the connector 500 The body mounting part 820 or the cover body 830 is fixedly connected.

The present invention realizes the fixed installation of the stator 600 of the motor by designing a brand-new component, that is, the connecting piece 500 in the present invention. One end of the connecting piece 500 is connected to the stator, and the other end is connected to the housing 100 of the deceleration clutch, and the motor protection The cover 1600 is also fixedly installed on the housing 100 , so the other end of the connector 500 can also be fixedly connected with the cover body mounting portion 1620 or the cover body 1630 of the motor protection cover 800 to realize the installation of the stator 600 . Therefore, the motor protection cover 1600 of the present invention not only does not have any influence on the installation of the motor, but also enables more installation methods of the motor, but no matter which installation method, it should be ensured that the cover body 1630 of the motor protection cover 1600 covers the upper part of the motor , and completely cover the motor.

The present invention installs the stator 600 through a single connecting piece 500 mainly has the following advantages:

1) The manufacturing of the stator 600 is simpler, only the stator 600 needs to be made into a plate-shaped structure, and no complicated installation structure is required on the stator 600. Due to the large size of the stator 600, if the installation structure and The stator 600 is manufactured in one piece, which is not only complicated to manufacture, but also expensive and inconvenient to assemble.

2) The installation of the stator 600 is more stable, and the size of the connecting piece 500 can be enlarged accordingly, so that the installation of the stator 600 is more stable, and the connecting piece 500 can be made of a higher strength material, such as an alloy material, The strength of the connecting piece 500 is further increased to ensure the stability of the connection.

3) When the connecting piece 500 is damaged, it is more convenient to disassemble and replace without any influence on the motor, which reduces the maintenance cost.

As a preferred embodiment of the present invention, the connector 500 includes an upper mounting portion 510 and a lower mounting portion 530, the upper mounting portion 510 is connected to the housing 100, the lower mounting portion 530 is connected to the stator 600, and the lower mounting portion 530 has an opening; The clutch sleeve 300 is arranged between the upper fixed plate 200 and the connecting piece 500, and the lower end of the clutch sleeve 300 retracts/extends from the opening. The upper mounting part 510 is mounted on the casing 100 by screws, and a plurality of screw mounting holes are correspondingly provided on the upper mounting part and the casing 100, and the lower mounting part 530 is mounted on the stator 600 by screws, and the lower mounting part 530 and the stator A plurality of screw mounting holes are correspondingly provided on the 600. The lower mounting part 530 has an opening, which has two functions: 1) it is required for the installation of the input shaft of the clutch device; 2) it enables the clutch sleeve 300 to slide down and engage with the dehydration tray.

As a preferred embodiment of the present invention, the opening of the lower mounting part 530 is provided with a flanging structure 540; the stator 600 includes a support connector 620 arranged in the center, and the support connector 620 is a disc-shaped structure. An annular groove structure is provided at the center of the supporting connector 620, and the annular groove structure is provided corresponding to the flange structure 540; the flange knot 540 is inserted into the ring groove structure during installation. The flange structure 540 is formed by turning up a straight edge perpendicular to the wall of the opening along the curve of the opening at the opening of the lower mounting part 530. The main function of the flange structure 540 is to install the stator 600 When matching with the groove on the stator, a preliminary positioning is carried out, which is more convenient for screw installation.

The stator 600 of the present invention includes a supporting connector 620 and a winding fixing member 610, which are integrated. The winding fixing member 610 is located on the outer ring of the supporting connecting member 620, and the stator 600 has a disk-like structure as a whole. The center of the support connector 620 has an opening, and the clutch sleeve 300 retracts/extrudes from the opening of the support connector 620 to separate/engage with the dehydration tray 800 ; the dehydration tray 800 is connected to the rotor 700 . In order to facilitate the installation of the input shaft 1000 and ensure the normal engagement of the clutch sleeve 300 , the diameter of the central opening of the supporting connector 620 is equal to the diameter of the opening of the lower mounting portion 530 of the mounting member 500 .

As a preferred embodiment of the present invention, a plurality of reinforcing ribs 520 are provided between the upper mounting part 510 and the lower mounting part 530, and the reinforcing ribs 520 are uniformly arranged in the circumferential direction. The ribs 520 increase the strength of the connecting piece 500 and ensure the stability of the connection.

As a preferred embodiment of the present invention, the inside of the connecting piece 500 is hollow, and the upper fixing plate 200 and the clutch sleeve 300 are respectively set inside the connecting piece 500 from top to bottom. The connecting piece 500 presents a "bowl-shaped" structure as a whole, and the "bowl-shaped" structure has two openings. The upper fixed plate 200 and the clutch sleeve 300 are installed inside the "bowl-shaped" structure, which makes this The structure of the invention is more compact, and the connecting piece 500 can protect the clutch sleeve 300 to a certain extent.

Since the clutch sleeve 300 is arranged inside the connecting piece 500, and the clutch sleeve 300 needs to move up and down outside the input shaft sleeve to engage with the upper fixed plate and the dehydration plate to realize the conversion of washing and dehydration, so, as a preferred embodiment of the present invention Embodiment, the connecting piece 500 has a certain height, the height of the connecting piece 500 is greater than the stroke of the clutch sleeve 300 moving up and down, preferably, the height of the connecting piece 500 is equal to the stroke of the clutch sleeve 300 moving up and down and the upper fixed plate 200, so that the connecting piece 500 does not affect the up and down movement of the clutch sleeve 300 and the installation needs of the upper fixed plate 200.

As in the present invention, the clutch mechanism also includes a clutch driving device, the clutch driving device includes a traction motor, a driving wheel and a fork lever 400, the driving wheel is installed on the output shaft of the traction motor, and the circumference of the driving wheel is supported The supporting surface has a height difference in the axial direction; the head end of the shift fork rod 400 is provided with a shift fork 410, and the shift fork 410 is stuck on the clutch sleeve 300, and the middle part of the shift fork rod 400 is provided with a support point 420, and the support point 420 is connected with the upper fixed plate 200, and the tail end of the fork lever 400 is set on the supporting surface of the driving wheel; the traction motor and the driving wheel are set on the cover 830; or, the traction motor and the driving wheel are set On the housing 100 , the shift fork lever 400 passes through the opening 1610 of the cover. The motor protection cover 1600 of the present invention not only does not have any influence on the installation of the traction motor and the driving wheel, but also provides other installation methods for the installation of the traction motor and the driving wheel, ensuring the normal operation of the clutch driving device.

As a preferred embodiment of the present invention, the traction motor is arranged inside the casing, the output shaft of the traction motor protrudes from the casing, and the drive wheel is arranged outside the casing; the casing is fixedly mounted on the cover 830; or, the housing is fixedly installed on the shell 100. In the present invention, the traction motor and the driving wheel are separately provided in a casing, so that the installation of the clutch driving device is simpler and more convenient.

As a preferred embodiment of the present invention, the cover body installation part 1620 includes a plurality of parts, which are uniformly arranged along the circumference of the inner wall of the cover body opening 1610 . The cover installation part 1620 of the present invention is formed by a projection extending from the cover 1630 toward the inside of the cover opening 1610, and a mounting screw hole is provided on the projection. The purpose of providing multiple cover installation parts 1620 in the present invention is to ensure the installation stability of the motor protection cover 800 , specifically, four cover installation parts 1620 are provided.

As a preferred embodiment of the present invention, the surrounding edges of the cover body 1630 are turned down respectively to form a cover body turn-up structure 1640 . The flange structure 1640 is mainly to facilitate the flow of water, so that the motor protection cover 1600 has better protection performance.

As a preferred embodiment of the present invention, the cover body 1630 is in the shape of an umbrella. This setting ensures that the water flow can be smoothly discharged along the edge of the cover body 1630 and ensures the reliability of the motor protection cover 1600 .

As a preferred embodiment of the present invention, the upper surface of the housing 100 is fixedly connected to the installation board, and the covering area of the cover 1630 is smaller than that of the installation board. The mounting plate of the present invention is a plate structure arranged at the bottom of the washing machine for the installation of the deceleration clutch, and the mounting plate connects the deceleration clutch and the bottom of the outer tub of the washing machine. The motor protection cover 1600 is arranged at the bottom of the mounting plate, and the coverage of the cover body 1630 of the motor protection cover 1600 is designed to be smaller than the mounting plate, so that the mounting plate can be used as the first protective barrier, and the motor protective cover 1600 can be used as the second protective barrier. , to further protect the motor.

As a preferred embodiment of the present invention, the housing 100 includes an upper end cover and a lower end cover, the upper end cover and the lower end cover are connected to form a chamber, and the gear box of the deceleration clutch is arranged in the chamber; the cover installation part 1620 is installed on the lower end face of the lower end cover.

The deceleration clutch housing 100 of the present invention comprises two parts, an upper end cover and a lower end cover, therefore, the upper end cover and the lower end cover of the deceleration clutch housing of the present invention can be assembled after processing respectively, so that the processing and processing of the deceleration clutch housing of a large-capacity washing machine can be satisfied. Assembling requirements, the laundry capacity of the large-capacity washing machine of the present invention is generally 15kg to 20kg. Moreover, the upper end cover is a split structure, including the upper end cover body connected with the lower end cover and the upper end cover body that needs to be matched with the output shaft. Since the bearing needs to be installed between the upper end cover body and the output shaft, the upper end cover The cover needs more strength to support the bearings. The upper end cover adopts a split structure design, which is divided into the upper end cover body and the upper end cover body with higher stress strength. According to different force requirements, different strength materials and processing techniques can be selected to ensure the stability of power transmission of the output shaft. sex and reliability.

As a preferred embodiment of the present invention, the upper end cover body and the upper end cover body are made of different materials respectively, and the strength of the material used for the upper end cover is greater than that of the material used for the upper end cover body; or, The wall thickness of the upper end cover body is greater than the wall thickness of the upper end cover body. This setting mainly depends on the force characteristics of the upper end cover body and the upper end cover body. Since the upper end cover body needs to cooperate with the output shaft, and the output shaft is directly connected to the wave wheel or inner tub of the washing machine, the load on the output bearing is relatively heavy. Therefore, the upper end cover body is the main stress point of the entire deceleration clutch housing, and it is necessary to give enough support to the output shaft to ensure the stability and reliability of power transmission. Therefore, the upper end cover needs to have higher strength, and the upper end cover body is made of a material with higher strength, while the upper end cover body can be properly selected from a material with lower strength under the premise of meeting the force requirements. Thereby reducing costs. Moreover, due to the difference in selected materials, the processing techniques adopted by the upper end cover body and the upper end cover body are also different. And the wall thickness of the upper end cover body is greater than the wall thickness of the upper end cover body, which can further increase the stress strength of the upper end cover body. Specifically, the upper end cover body and the upper end cover body can be made of aluminum alloy materials, and the aluminum alloy materials of the upper end cover body and the upper end cover body adopt different manufacturing processes to make the upper end cover body stronger. The wall thickness of the upper end cover body is not less than 3mm, and the wall thickness of the upper end cover body is not less than 2mm. Since the wall thickness of the upper end cover body is relatively large, the fillet at the bottom of the upper end cover body can be made larger and the bearing capacity is also stronger. big.

Example 1

As shown in Fig. 3 to Fig. 6, a deceleration clutch clutch driving device described in the present embodiment includes a driving motor 1100, a driving wheel 1300 and a shift fork lever 400, and the driving wheel 1300 is installed on the motor shaft of the driving motor 1100 to drive The circumference of the wheel 1300 is provided with a support surface, the support surface has a height difference in the axial direction, the shift fork lever 400 is a lever structure, the middle part is provided with a fixed fulcrum 420, the head of the shift fork lever 400 is a shift fork 410, and the shift fork 410 is located in the clutch sleeve. The bottom of 300 controls the up and down movement of clutch sleeve 300 together with return spring 1500. The tail of shift fork lever 400 is the driving end 430, and the driving end 430 is provided with a sliding contact surface, which is slidingly matched with the support surface; the driving motor 1100 drives the driving wheel 1300 to rotate , the driving end 430 of the tail of the shift fork lever 400 slides relatively on the supporting surface, the height change of the tail driving end 430 drives the height change of the shift fork 410 of the head of the shift fork rod 400, and the head shift fork 410 and the return spring 1500 work together to drive the clutch shaft Set of 300 moves up and down. The driving wheel 1300 is directly installed on the motor shaft of the driving motor 1100, the axis of the driving wheel 1300 is parallel to the axis of the clutch sleeve 300, the driving wheel 1300 is axially stationary and rotates in the circumferential direction, the shift fork lever 400 is stationary in the circumferential direction, and the driving wheel 1300 is rotating in the circumferential direction At this time, the height of the driving end 430 of the tail of the shift fork rod 400 supported on the driving wheel 1300 supporting surface changes with the change of the axial height of the clutch sleeve when the supporting surface rotates, and the height of the driving end 430 of the shifting fork rod 400 tail changes, driving The height of the shift fork 410 at the head of the shift fork lever 400 changes accordingly, thereby driving the movement of the clutch sleeve 300 . The clutch driving device has the advantages of simple structure, high driving reliability, convenient installation and high degree of module integration.

The driving motor is a stepping motor, and a pulse signal is given to drive the motor shaft to rotate through 180°, and the driving end 430 at the rear of the shift fork lever 400 moves from the highest position to the lowest position, or from the lowest position to the highest position, and the driving motor again After turning 180°, the tail driving end 430 of the shift fork lever 400 moves from the lowest position to the highest position, or from the highest position to the lowest position.

The clutch sleeve 300 moves up and down along the input shaft sleeve 900 under the drive of the shift fork 400 and the return spring 1500, and when it moves to the lowest part, the spline teeth of the lower engaging part 320 of the clutch sleeve 300 mesh with the dehydration tray 800, and the dehydration tray 800 and the motor The spline teeth on the rotor 700 mesh, the input shaft 1000 and the input shaft sleeve 900 rotate at the same speed and in the same direction, driving the pulsator shaft and the dehydration shaft to rotate at the same speed and in the same direction. At this time, it is in the dehydration state. When the clutch sleeve 300 moves up and down to the uppermost position , the spline teeth of the upper engaging part 310 mesh with the spline teeth on the upper fixed plate 200, the input shaft sleeve 900 cannot rotate in the circumferential direction, and the input shaft 1000 rotates through the deceleration clutch to drive the pulsator shaft and the dehydration shaft to rotate in reverse, forming a dual power Washing, or the dehydration shaft does not rotate and the pulsator shaft rotates to form an ordinary fully automatic washing, depending on the setting of the gear train inside the deceleration clutch, and it is in the washing state at this time.

The driving wheel 1300 in this embodiment includes a cylindrical body 1310, at least part of the circumferential surface of the cylindrical body 1310 extends radially outward to form an arc-shaped protrusion 1320, and one axial surface of the protrusion 1320 is a supporting surface. The support surface includes an inclined first transition surface 1330 , a highest support surface 1340 , and a second transition surface 1350 opposite to the first transition surface 1330 , which are sequentially connected along the circumferential direction.

One side of the driving end 430 of the tail of the fork lever 400 is in contact with the supporting surface of the driving wheel 1300, and the contact surface includes an inclined third transition surface 431, the highest contact surface 432 and the third transition surface connected in sequence along the circumferential direction. The surface 431 is oppositely inclined to the fourth transition surface 433 . The highest support surface 1340 and the highest contact surface 432 are in surface contact when in contact, which can avoid damage to the contact parts caused by stress concentration during contact, and improve the service life of parts.

Optionally, part of the circumferential surface of the end of the driving wheel 1300 extends radially outward to form a protrusion 1320 , and the other circumferential surface is the circumferential surface of the cylindrical body 1310 , preferably the entire end of the driving wheel 1300 1/3-2/3 of the circumferential surface extends radially outward to form a protrusion 1320, and the other circumferential surface is the circumferential surface of the cylindrical body, the supporting surface of the protrusion 1320 is in contact with the driving end 430 of the shift fork rod 400 When in contact, the driving shift fork rod 400 moves, and the driving wheel 1300 rotates until the side of the driving end of the shift fork rod 400 is separated from the support surface on the protrusion 1320, only the arc groove of the tail driving end 430 and the cylinder of the cylindrical body 1310 During surface contact, the up and down direction of the shift fork lever 400 does not act as a limit, and now the shift fork lever 400 returns to its original position by the reset torsion spring 1400 .

For example, 1/2 of the circumferential surface of the end of the driving wheel 1300 extends radially outward to form the protrusion 1320 , and the other 1/2 of the circumferential surface is the circumferential surface of the cylindrical body 1310 . Alternatively, 1/3 of the circumferential surface of the end of the driving wheel extends radially outward to form the protrusion 1320 , and the other 2/3 of the circumferential surface is the circumferential surface of the cylindrical body 1310 . Alternatively, 2/3 of the circumference of the end of the driving wheel 1300 extends radially outward to form the protrusion 1320 , and the other 1/3 of the circumference is the circumference of the cylindrical body 1310 .

Optionally, the entire circumferential surface of the end portion of the driving wheel 1300 extends radially outward to form a protrusion 1320, and the protrusion 1320 includes a highest supporting surface and a lowest supporting surface, and the highest supporting surface and the lowest supporting surface The supporting surfaces are spaced at 180° in the circumferential direction, and there is an inclined transition between the highest supporting surface and the lowest supporting surface. In this case, the return torsion spring 1400 of the shift fork lever 400 always works.

The shift fork lever 400 is a lever structure, and the middle part is provided with a fixed fulcrum 420 , and the middle part of the shift fork lever 400 is installed on an upper fixed plate 200 . The middle part of the shift fork lever 400 is provided with a first installation hole, and the corresponding position of the upper fixed plate 200 is provided with a second installation hole, and the installation holes are matched and hinged by a rotating pin to form a fixed fulcrum 420 of the shift fork lever 400. A torsion spring that provides a reset force for the fork lever 400 is also provided on the rotating pin of the fork lever, and the torsion spring is the reset torsion spring 1400 of the fork lever. side. In this way, the movement of the driving end 430 with a relatively small stroke can obtain the movement of the head with a relatively large stroke.

The axial upper surface of the protruding portion 1320 of the driving wheel 1300 is a supporting surface, and the lower surface of the tail driving end 430 of the shift fork lever 400 is a contact surface contacting with the supporting surface, and the supporting surface includes an upwardly inclined The first transition surface 1330 , the highest support surface 1340 and the second transition surface 1350 obliquely downward, the contact surfaces include the third transition surface 431 obliquely downward, the highest contact surface 432 and the fourth transition surface 433 obliquely upward.

When the rotation of the driving wheel 1300 drives the clutch sleeve 300 to be in the second position, the highest support surface 1340 will lift up the driving end 430 of the tail of the shift fork lever 400, and the head shift fork 410 of the shift fork lever will move downward, and the clutch The axial limiting effect of the sleeve 300 disappears, and the clutch sleeve 300 moves downward under the action of the clutch spring and gravity. The driving wheel 1300 rotates 180 degrees. When the rotation of the driving wheel 1300 drives the clutch sleeve 300 to be in the first position, the return spring 1400 is in a compressed state, and the tail driving end 430 of the shift fork lever 400 is in a free state, or the lowest support surface and the highest contact surface Contact, the fork lever 400 is under the effect of its own torsion spring, the tail driving end 430 moves downward, the head shift fork 410 moves upward, and the head shift fork 410 of the shift fork lever 400 jacks up the clutch bushing 300 .

The axial lower surface of the protruding portion 1320 of the driving wheel 1300 is a supporting surface, and the upper surface of the tail driving end 430 of the shift fork lever 400 is a contact surface contacting with the supporting surface, and the supporting surface includes a downward direction. The first transition surface 1330 , the highest support surface 1340 and the second transition surface 1350 are inclined upward, and the contact surfaces include the third transition surface 431 upward, the highest contact surface 432 and the fourth transition surface 433 obliquely downward.

When the driving wheel 1300 rotates, the highest supporting surface 1340 presses down the tail driving end 430 of the fork lever 400 , and the head fork 410 of the fork lever 400 moves upward to lift the clutch sleeve 300 . The driving wheel 1300 rotates 180 degrees, the tail driving end 430 of the shift fork rod 400 has only an arc-shaped groove to cooperate with the driving wheel, and the tail driving end 430 of the shift fork rod 400 is in a free state in the axial direction, or the lowest support surface and the highest contact surface Contact, the shift fork lever 400 is under the effect of its own torsion spring, the tail driving end 430 moves upwards, the head moves downwards, and the clutch sleeve 300 moves downwards under the action of the return spring 1500 and gravity.

Example 2

As shown in Figures 2 to 3, a clutch drive installation structure is introduced in this embodiment, the clutch drive includes a drive motor 1100, a drive wheel 1300 and a fork lever 400, and the drive wheel 1300 is installed on the drive motor 1100 On the output shaft, the drive motor 1100 is fixedly installed on the housing 100 of the reduction clutch. Preferably, the driving motor 1100 is installed in the installation cover 1200 , and the installation cover 1200 is fixed on the casing 100 .

The installation cover 1200 is composed of a hollow cover for the drive motor 1100. One side of the installation cover 1200 is an installation side wall, and the installation side wall is provided with an outwardly protruding installation flange 1250. The mounting flange 1250 is detachably connected to the shell 100 via bolts.

As shown in FIG. 3 , the installation side wall of the installation cover 1200 and the installation flange 1250 are both curved surfaces that match the shape of the side wall of the housing 100, so that the installation cover 1200 is in close contact with the side wall of the housing 100 to avoid contact between the housing 100 and the housing 100. A gap is formed between the installation covers 1200, which causes the occurrence of sundry trapping.

In this embodiment, the left and right sides of the installation sidewall respectively extend outward to form a installation flange 1250 , and the installation flange 1250 is respectively provided with installation holes 1230 for bolt installation.

In this embodiment, the outer wall of the installation cover 1200 is protruded with a plurality of reinforcing ribs extending to the installation flange, so as to improve the structural strength of the installation flange and improve the installation firmness of the installation cover. As shown in FIG. 4 , preferably, the left side wall or the right side wall of the installation side wall of the installation cover 1200 is the left side wall or the right side wall of the installation cover 1200, and the left side wall or the right side wall are provided with multiple Reinforcing ribs 1220, the reinforcing ribs 1220 protrude from the outside of the left side wall or the right side wall, and each reinforcing rib extends horizontally to the installation flange 1250 on the corresponding side.

The lower part of the installation side wall of the installation cover 1200 is provided with a positioning flange 1240 protruding toward the direction of the housing 100, and the positioning flange 1240 is in contact with the lower surface of the housing 100, so that the installation cover 1200 is positioned and installed on the housing 100 , to achieve rapid positioning of the relative position between the installation cover 1200 and the housing 100 . At the same time, a mounting hole 1230 is respectively provided on the upper part of the mounting flange 1250 and the positioning flange 1240 to improve the fixing reliability of the mounting cover 1200 . In this embodiment, the reinforcing ribs 1220 are horizontally arranged at equal intervals in the middle of the installation cover 1200 ;

The output shaft of the driving motor 1100 is arranged vertically through the upper side or the lower side of the installation cover 1200 , and the output end of the output shaft is installed with a driving wheel 1300 co-rotating with the output shaft. Preferably, the lower side or the upper side of the installation cover 1200 is composed of a detachable side wall 1210, and the detachable side wall 1210 is detachably connected with the installation cover 1200 through buckles, so that the internal space of the installation cover 1200 can be opened , so as to facilitate the maintenance and replacement of the internal drive motor 1100. Further preferably, the driving wheel 1300 and the detachable side wall 1210 are respectively arranged on two different sides opposite to the installation cover 1200, so as to improve the convenience of maintenance of the deceleration clutch.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with the technology of this patent Without departing from the scope of the technical solution of the present invention, personnel can use the technical content of the above prompts to make some changes or modify them into equivalent embodiments with equivalent changes. In essence, any simple modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the solutions of the present invention.

Claims (7)

1. a kind of motor protecting cover, which is characterized in that the motor protecting cover includes cover (1630) and cover mounting portion (1620), cover mounting portion (1620) is fixedly mounted on the lower end surface of the shell outside speed-reducing clutch (100), cover (1630) it is arranged between the shell outside speed-reducing clutch (100) and motor；The cover (1630) has a covering surface, The covering surface covers motor；

The speed-reducing clutch further includes clutch, and clutch further includes clutch driving unit, clutch driving unit packet Driving motor (1100), driving wheel (1300) and yoke bar (400) are included, the driving wheel is mounted on driving motor (1100) On output shaft, supporting surface is arranged in drive wheel circumferences, and supporting surface has difference in height in the axial direction；The head of the yoke bar (400) End setting shift fork (410), shift fork (410) are stuck on clutch cover (300), and supporting point (420) are arranged in the middle part of yoke bar (400), Supporting point (420) is connect with upper fixed disk (200), and the tail end of yoke bar (400) is arranged on the supporting surface of driving wheel, described Driving motor (1100) is mounted in mounting cup (1200), and the mounting cup (1200) is fixed on shell (100)；

The side of the mounting cup (1200) is installation side wall, and the installation side wall is equipped with the installation flange outwardly protruded (1250), the installation flange (1250) is removably attachable on shell (100) through bolt；The installation of mounting cup (1200) The lower part of side wall is equipped with the positioning flange (1240) protruded to shell (100) direction, the positioning flange (1240) and shell (100) lower surface is bonded contact；

The shell (100) includes upper end cover and lower cover, and upper end cover is connected to form a chamber with lower cover, in chamber The gear-box of speed-reducing clutch is set, and the cover mounting portion (1620) is mounted on the lower end surface of lower cover；

The upper end cover is split type structure, and the upper end cover ontology including being connected with lower cover and needs match with output shaft The upper end cap body of conjunction.

2. a kind of motor protecting cover according to claim 1, which is characterized in that the motor include stator (600) and The rotor (700) external in stator (600) is set, and the stator (600) is fixed by connector (500) and shell (100) Connection or the stator (600) pass through the cover mounting portion (1620) or cover of connector (500) and motor protecting cover (1630) it is fixedly connected.

3. a kind of motor protecting cover according to claim 1 or 2, which is characterized in that the center of the cover (1630) Offer cover opening (1610)；The speed-reducing clutch further includes clutch, and clutch includes upper fixed disk (200), can slide up and down clutch cover (300) and dehydration plate (800), clutch cover (300) slide up and down respectively with upper fixed disk (200) and washing and the conversion of dehydration condition are realized in dehydration plate (800) engagement connection；The upper fixed disk (200) is fixed to be connected It connects on the lower end surface of shell (100), upper fixed disk (200) setting is in the inside of cover opening (1610).

4. a kind of motor protecting cover according to claim 3, which is characterized in that the cover mounting portion (1620) includes It is multiple, it is circumferentially uniformly arranged respectively along the inner wall of cover opening (1610).

5. a kind of motor protecting cover according to claim 1, which is characterized in that the edge of the cover (1630) Flange forms cover turnup structure (1640) separately down.

6. a kind of motor protecting cover according to claim 1, which is characterized in that the cover (1630) is in umbrella cover shape knot Structure.

7. a kind of motor protecting cover according to claim 1, which is characterized in that the upper surface of the shell (100) is solid On a mounting board, the area of the covering surface of the cover (1630) is less than the area coverage of mounting plate for fixed connection.