CN113668196A - Footing structure and washing machine - Google Patents

Abstract

The invention discloses a bottom foot structure and a washing machine. The invention provides a footing structure, which comprises a footing, wherein a displacement sensing device for detecting the displacement change of the footing is arranged on the footing, the displacement sensing device arranged on the footing can sense the displacement change of the footing caused by vibration, and the footing structure can accurately control the unbalanced displacement caused by the vibration during the dehydration of a washing machine. The invention also provides a washing machine, which comprises a washing machine body and a bottom foot structure, wherein the bottom foot structure comprises four bottom feet arranged at four corners of the washing machine body, and the bottom of at least one bottom foot is provided with a displacement sensing device contacted with the ground.

Description

A foot structure and washing machine

technical field

The invention belongs to the technical field of washing machines, and in particular relates to a foot structure and a washing machine.

Background technique

The domestic washing machine has a dehydration stage when the washing program is running. Its working principle in this stage is to use the motor and the transmission mechanism to drive the inner dehydration barrel to rotate at a high speed, and achieve the purpose of dehydration through centrifugal force. However, during the dehydration program, there will be load imbalance. The unbalanced load can easily lead to the problem of large vibration;

The existing domestic washing machine is equipped with a control lever device. During dehydration, once the load of the dehydration tub is unbalanced, it will hit the box of the washing machine and the control lever device, thereby triggering the control switch to stop the machine and increase the rinse once. However, There will also be rare cases where the box body is hit and the control lever does not stop. When the dehydration speed continues to increase, there will be relatively bad situations such as displacement, resulting in complaints and complaints from users.

SUMMARY OF THE INVENTION

The first technical problem to be solved by the present invention is to overcome the shortage of unbalanced displacement caused by dehydration of the washing machine in the prior art, and to provide a foot structure and a washing machine.

In order to solve the above-mentioned technical problems, the basic conception of the technical scheme adopted in the present invention is:

The invention provides a foot structure, comprising a foot, and a displacement sensing device for detecting the displacement change of the foot is arranged on the foot.

Further, the displacement sensing device includes a photoelectric sensing device or a ball-type displacement sensing device.

Further, the bottom of the foot is provided with a first groove with an opening downward, the photoelectric sensing device is arranged in the first groove, and slides in the first groove along the axial direction of the foot, and part of the photoelectric sensing device is exposed. outside the first groove; or,

The ball-type displacement sensing device is rotatably arranged in the first groove, and its lowest end is flush with the lowest end of the bottom of the foot.

Further, the photoelectric sensing device includes a light emitting part, a light receiving part, a light reflecting part and a first elastic part, and the light reflecting part is provided with a light reflecting surface;

The light-emitting part and the light-receiving part are arranged at the bottom of the first groove; the first elastic part extends along the axial direction of the foot, one end of which is arranged at the bottom of the first groove, and the other end is arranged on the light reflecting part The light reflecting member slides in the first groove, and part of the light reflecting member is exposed outside the first groove, and the light reflecting surface on the light reflecting member faces the groove bottom of the first groove.

Further, the rolling ball displacement sensing device includes a rolling ball, two rolling shafts, a pressing wheel and two rolling shaft encoders;

The two rolling shafts are vertically arranged, and are rotatably arranged on the groove wall of the first groove, the rolling ball is placed between the two rolling shafts, and a pressing wheel is arranged on one side thereof, and the pressing wheel is rotatably arranged on the groove wall. On the groove wall of the first groove, one end of each rolling shaft and the pressing theory is in tangential contact with the rolling ball. Each rolling shaft is provided with a rolling shaft encoder, and the bottom end of the rolling ball is connected to the bottom of the foot. the bottom end is flush.

Further, the foot is also provided with a normally closed switch for detecting the displacement change of the foot, the normally closed switch and the photoelectric sensing device or the rolling ball displacement sensing device are arranged independently of each other, or the normally closed switch and the photoelectric sensing device or The ball-type displacement sensing device is integrated into one set.

Further, the bottom of the foot is also provided with a second groove with an opening downward, the second groove and the first groove are independent of each other, the normally closed switch is arranged in the second groove, and is located in the second groove along the axial direction of the foot. Sliding in the two grooves, part of the normally closed switch is exposed outside the second groove, and is flush with part of the photoelectric sensing device exposed outside the first groove.

Further, the top of the normally closed switch is provided at the bottom of the first groove, and the bottom of the normally closed switch is provided with a photoelectric sensing device or a rolling ball displacement sensing device.

Further, the normally closed switch includes a second elastic member, a button, a movable contact arranged on the button, and a static contact arranged at the bottom of the first groove;

The second elastic member extends along the axial direction of the foot, one end of the second elastic member is connected with the static contact, the other end is in contact with the moving contact, and the static contact is elastically electrically connected with the moving contact;

The bottom of the button is provided with a light-emitting part and a light-receiving part; or, the rolling ball is rotatably provided on the bottom of the button.

The present invention also provides a washing machine, wherein the bottom of the washing machine is provided with the foot structure provided by the above technical solution.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

1. The foot structure provided by the present invention includes a foot, and the foot is provided with a displacement sensing device for detecting the displacement change of the foot, and the displacement change of the foot is sensed by the displacement sensor device, so as to accurately control the vibration caused by the dehydration of the washing machine. The unbalanced displacement improves the safety and reliability of the washing machine.

2. In the foot structure provided by the present invention, the foot is provided with a photoelectric sensing device and a normally closed switch. The normally closed switch can assist the photoelectric sensing device in detecting displacement changes and improve the accuracy of displacement change detection.

3. In the foot structure provided by the present invention, the foot is provided with a ball-type displacement sensing device and a normally closed switch. The normally closed switch can assist the photoelectric sensing device in detecting displacement changes and improve the accuracy of displacement change detection.

The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, as a part of the present invention, are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings in the following description are only some embodiments, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic structural diagram of a foot structure provided by an embodiment of the present invention;

2 is a schematic structural diagram of a foot structure provided by an embodiment of the present invention;

3 is a schematic structural diagram of a photoelectric sensing device provided by an embodiment of the present invention;

4 is a schematic structural diagram of a foot structure provided by another embodiment of the present invention;

5 is a bottom view of a schematic structural diagram of a foot structure provided by another embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a foot structure provided by another embodiment of the present invention.

In the figure: 1-foot; 11-first groove; 2-photoelectric sensing device; 21-upper shell; 22-lower shell; 23-light emitting part; 24-light receiving part; 25-light reflection 251-light reflecting surface; 26-first elastic part; 261-first spring; 3-normally closed switch; 4-ball displacement sensing device; 41-rolling ball; 42-rolling shaft; 43-rolling shaft Encoder; 44-Pressure wheel.

It should be noted that these drawings and written descriptions are not intended to limit the scope of the present invention in any way, but to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention , but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention.

In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; it can be mechanical connection or electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

Example 1

As shown in FIG. 1 , the present invention provides a foot structure, comprising a foot 1 , and a photoelectric sensing device 2 for detecting the displacement change of the foot is arranged on the foot.

In the embodiment of the present invention, the foot 1 is arranged at the bottom of the washing machine, and is inserted into the washing machine from the bottom of the washing machine, so that the foot 1 is fixed on the washing machine, the foot 1 supports the washing machine to leave the ground, and the foot 1 bears the weight of the washing machine; The whole dehydration process of the washing machine is divided into 3 stages, one of which is the dehydration acceleration stage. The motor speed of the washing machine is accelerated from 0 to a certain speed. The curve of this stage is characterized by high amplitude and low frequency. The amplitude of the curve can characterize washing. The size of the vibration of the bucket, if the vibration is too large, there will be a danger of hitting the box, and it is necessary to stop dehydration to rebalance the clothes in the bucket;

The washing machine is provided with a controller, the photoelectric sensing device 2 is connected to the controller, the photoelectric sensing device 2 senses the displacement change of the foot due to vibration, converts it into an electrical signal and transmits it to the controller, and the controller receives the photoelectric sensing The electrical signal sent from the device 2 determines whether the displacement of the foot 1 has changed. If the displacement of the foot 1 changes, the controller controls the washing machine to stop dehydration, and the photoelectric sensing device 2 senses the displacement of the foot to achieve precise control. Unbalanced displacement caused by vibration during washing machine dehydration improves the safety and reliability of washing machine operation;

Wherein, the electrical signal can be voltage, current, frequency, PWM (pulse width), etc. The photoelectric sensor device 2 also includes a wire (not shown) of the photoelectric sensor device 2 connected to the controller, so as to facilitate the photoelectric sensor The device 2 is connected with the controller; of course, the photoelectric sensing device can also communicate wirelessly with the controller;

The bottom foot includes a bottom foot seat and an adjusting foot, the adjusting foot is screwed with the bottom foot seat, and the photoelectric sensing device is arranged on the bottom foot seat.

In the embodiment of the present invention, the bottom of the foot 1 is provided with a first groove 11 with a downward opening, and the photoelectric sensing device 2 is arranged in the first groove 11 and is located in the first groove 11 along the axial direction of the foot. Sliding inside, part of the photoelectric sensing device 2 is exposed outside the first groove 11 .

In the embodiment of the present invention, the photoelectric sensor device 2 is disposed in the first groove 11, the opening of the first groove 11 is downward, the photoelectric sensor device 2 is disposed in the first groove 11 through the opening, and the first groove 11 is located in the first groove 11. The groove 11 has a guiding function for the photoelectric sensing device 2, and limits the photoelectric sensing device 2 in a certain space; the photoelectric sensing device 2 can slide in the first groove 11 to adapt to the displacement change of the foot; The photoelectric sensing device 2 is exposed outside the first groove 11, that is, the photoelectric sensing device 2 protrudes downward relative to the foot, in order to make contact with the ground; specifically, the first groove 11 is provided on the foot base .

As shown in FIG. 3 , in the embodiment of the present invention, the photoelectric sensing device 2 includes a light emitting member 23 , a light receiving member 24 , a light reflecting member 25 and a first elastic member 26 , and the light reflecting member 25 is provided with a light reflecting surface 251, the light transmitting part 25 is provided with a light transmitting end, and the light receiving part 24 is provided with a light receiving end;

The light emitting part 23 and the light receiving part 24 are arranged at the bottom of the first groove 11, and the first elastic part 26 extends along the axial direction of the foot, one end of which is arranged at the bottom of the first groove, and the other end is arranged at the bottom of the first groove. On the light reflecting member 25, the light reflecting member 25 slides in the first groove 11, and part of the light reflecting member 25 is exposed outside the groove, and the light reflecting surface 251 on the light reflecting member 25 faces the groove bottom of the first groove 11 , the light emitting end and the light receiving end face the opening of the first groove 11 .

In the embodiment of the present invention, when the foot 1 is installed on the washing machine, part of the light reflecting member 25 contacts the ground and extends into the first groove 11, and the first elastic member 26 is elastically compressed and deformed. When the displacement changes, the first elastic member 26 is elongated, the distance between the light reflective surface 251 and the light emitting member 23 and the light receiving member 24 changes, and the light reflective surface 251 reflects the light emitted from the light emitting member 23 back to the light receiving member component 24, that is, the light signal reflected by the light reflecting surface 251 to the light receiving component 24 changes, the light receiving component receives the changed light signal, converts the light signal into an electrical signal and transmits it to the controller, and the controller receives the light receiving component The electrical signal that changes from 24, the electrical signal has a corresponding relationship with the distance between the light reflecting surface 251 and the light emitting part 23 and the light receiving part 24, so that the electrical signal can accurately reflect the change of the foot displacement;

The photoelectric sensor device 2 also includes an upper casing 21 and a lower casing 22. The upper casing 21 is arranged at the bottom of the first groove, the bottom end of the upper casing 21 is open, the top end of the lower casing 22 is open, and the upper casing 21 is open. The body 21 is covered on the lower casing 22, and the upper casing 21 and the lower casing 22 are connected by a spring so that the upper casing 21 and the lower casing 22 can move up and down relative to each other, that is, the upper casing 21 can move up and down. Move up and down relative to the lower casing 22, the lower casing 22 can be relative to the upper casing 21, the lower casing 22 can slide in the first groove, the lower casing 22 is slidably connected with the groove wall of the first groove, and part of the lower casing The body 22 is exposed outside the first groove, the light emitting member 23 and the light receiving member 24 are arranged on the top wall of the upper casing 21, the light emitting member 23 is arranged on the bottom wall of the lower casing 22, and the first elastic member 26 One end is set on the top wall of the upper shell 21, and the other end is set on the bottom wall of the lower shell 22;

The first elastic member 26 is a first spring 261, and the first spring 261 is a linear spring with an elastic coefficient. The upper casing 21 and the lower casing 22 can also be connected by other elastic members, and the elastic members can also be connected in other ways. Connected to the upper case 21 and the lower case 22, the shapes of the upper case 21 and the lower case 22, and the fitting relationship between the upper case 21 and the lower case 22 are not limited to this, as long as the upper case 21 and the lower case 22 are The shells 22 can be moved relative to each other;

The light receiving part 24 is wirelessly connected with the controller on the washing machine, the washing machine is also provided with a wireless receiving module, the light receiving part 24 is connected with a wireless sending module, the controller is connected with the wireless receiving module, and the wireless sending module is connected with the wireless receiving module, To realize the wireless connection between the light receiving part and the controller, specifically, the wireless sending module and the light receiving part 24 are arranged independently, the wireless sending module is arranged on the upper casing 21, or the wireless sending module and the light receiving part are integrated together.

In addition, the light emitting member 23 and the light receiving member 24 can also be disposed on the bottom wall of the lower casing 22 , and the light emitting member 23 can also be disposed on the top wall of the upper casing 21 .

As shown in FIG. 3 , in the embodiment of the present invention, one end of the first elastic member 26 is disposed on the bottom of the first groove, and the other end is disposed on the light reflecting surface 251 of the light reflecting member 25 . The light receiving members 24 are disposed adjacently on the groove bottom of the first groove, and the light reflecting surface 251 of the light reflecting member 25 is opposite to the light emitting member 23 and the light receiving member 24 .

In the embodiment of the present invention, the other end of the first elastic member 26 is disposed on the light reflecting surface 251 of the light reflecting member 25 , so that the trajectory of the light reflected by the light reflecting surface 251 can be compared with the extending direction of the first elastic member 26 match, to increase the accuracy of the photoelectric sensing device 2 for detecting the change of the foot displacement; the light reflecting surface 251 is opposite to the light emitting member 23 and the light receiving member 24, so that the trajectory of the light can be aligned with the extending direction of the first elastic member 26 It is more consistent, and the accuracy of the photoelectric sensing device 2 for detecting the displacement change of the foot is also increased;

The light emitting element 23 and the light receiving element 24 are disposed adjacent to each other on the bottom of the first groove, that is, they are spaced apart, so that the light receiving element 24 can smoothly receive the light signal reflected by the light reflecting surface 251 .

In the embodiment of the present invention, the foot is further provided with a normally closed switch 3 for detecting the displacement change of the foot, and the normally closed switch 3 and the photoelectric sensing device 2 are arranged independently of each other.

In the embodiment of the present invention, a normally closed switch 3 is also provided on the foot, and the normally closed switch 3 is used for detecting the displacement change of the foot, which can assist the photoelectric sensing device 2 to detect the displacement change of the foot, and improve the accuracy of detection In addition, the normally closed switch can cope with the poor induction of the photoelectric sensor device or the damage of the photoelectric sensor device.

In the embodiment of the present invention, the normally closed switch 3 can also be arranged in the first groove and slide in the first groove along the axial direction of the foot, and part of the normally closed switch 3 is exposed outside the first groove, and It is flush with the part of the photoelectric sensing device 2 exposed outside the first groove.

In the embodiment of the present invention, the first groove has a guiding effect on the normally closed switch 3, and the normally closed switch 3 is limited in a certain space; the normally closed switch 3 can slide in the first groove to adapt to the foot. part of the normally closed switch 3 is exposed outside the first groove, that is, the normally closed switch 3 protrudes downward relative to the foot, in order to make contact with the ground; the normally closed switch 3 protrudes downward relative to the foot The degree is the same as the degree that the photoelectric sensor device 2 protrudes downward to ensure the stability of the foot.

In the embodiment of the present invention, the bottom of the foot is further provided with a second groove with an opening downward, the second groove and the first groove are independent of each other, and the normally closed switch 3 is arranged in the second groove along the foot. The axial direction of the switch 3 slides in the second groove, and part of the normally closed switch 3 is exposed outside the second groove, and is flush with the part of the photoelectric sensing device 2 exposed outside the first groove.

In the embodiment of the present invention, the normally closed switch 3 is disposed in the second groove, the opening of the second groove is downward, the normally closed switch 3 is disposed in the second groove through the opening, and the second groove is opposite to the normally closed switch. 3 has a guiding function, limiting the normally closed switch 3 in a certain space; the normally closed switch 3 can slide in the second groove to adapt to the displacement change of the foot; part of the normally closed switch 3 is exposed in the second groove In addition, that is, the normally closed switch 3 protrudes downward relative to the foot, in order to make contact with the ground.

In the embodiment of the present invention, the bottom of the foot is provided with a first groove and a plurality of second grooves, the first groove is located in the center of the bottom of the foot, and the plurality of second grooves are along the circumferential direction of the first groove distributed in a circle.

In the embodiment of the present invention, a first groove and a plurality of second grooves are arranged on the bottom of the foot 1, that is, a photoelectric sensing device 2 and a plurality of normally closed switches 3 are arranged on the bottom of the foot to ensure the photoelectric On the basis that the sensing device 2 can sense the displacement change of the center of the bottom of the foot, a plurality of normally closed switches 3 can sense the displacement of other parts of the bottom of the foot to increase the sensing range.

As shown in FIG. 2 , in the embodiment of the present invention, the foot 1 is further provided with a normally closed switch 3 for detecting the displacement change of the foot 1, and the normally closed switch 3 is integrated with the photoelectric sensing device 2 and provided as a whole;

Specifically, the top of the normally closed switch 3 is provided with the bottom of the first groove 11 , and the bottom of the normally closed switch 3 is provided with the photoelectric sensing device 2 .

In the embodiment of the present invention, the normally closed switch 3 and the photoelectric sensing device 2 are integrated into one body, so as to reduce the space occupation on the foot 1, and the photoelectric sensing device 2 and the normally closed switch 3 work simultaneously when vibration occurs, which can Improves sensitivity to displacement changes.

In the embodiment of the present invention, the normally closed switch includes a second elastic member, a button, a movable contact arranged on the button, and a static contact arranged at the bottom of the first groove groove or the bottom of the second groove groove;

The second elastic member extends along the axial direction of the foot, one end of the second elastic member is connected with the static contact, the other end is in contact with the moving contact, and the static contact is elastically electrically connected with the moving contact;

The button slides in the second groove, and part of the button is exposed outside the second groove, and the part of the button exposed outside the second groove is flush with the part of the light reflector exposed outside the first groove; or, the bottom of the button A light-emitting part and a light-receiving part are provided.

In the embodiment of the present invention, when the normally closed switch 3 is arranged in the second groove, under the influence of the weight of the washing machine, the button and the light reflecting member are pressed simultaneously, and the second elastic member is squeezed by an external force and elastically deformed, The moving contact and the static contact abutting on the button are closed, and the current is connected to form a loop. When moving violently, the button part is instantly released, the button is released, the external force on the second elastic member is removed, and the elastic force of the second elastic member is released, so that the button abutting against the second elastic member is under the action of the elastic force and the button. The circuit between the connected moving contact and the static contact is disconnected, and the current is open. The static contact transmits the open-circuit signal to the controller of the washing machine. The controller of the washing machine detects the open-circuit signal, and the controller controls the washing machine to stop dehydration;

When the top of the normally closed switch 3 is set at the bottom of the first groove, and the foot changes in displacement due to vibration, the first elastic member 26 is stretched and the second elastic member is stretched at the same time.

The static contact is wirelessly connected with the controller of the washing machine, and the static contact is connected with a wireless sending module. The washing machine also has a wireless receiving module. The wireless connection between the head and the washing machine controller; the wireless sending module and the static contact are independent of each other, or integrated with the static contact.

The present invention also provides a washing machine, including a washing machine body, and the foot structure provided by the above technical solution. The foot structure includes four feet arranged at four corners of the washing machine body, and the bottom of at least one foot has Photoelectric sensing device 2 in contact with the ground.

In the embodiment of the present invention, the washing machine body includes a box body and a dehydration bucket. The dehydration bucket is rotatably arranged in the dehydration bucket, and the feet are arranged at the bottom of the box body. The load of the dehydration bucket is unbalanced and hits the box body. Vibration is generated so that the displacement changes. The photoelectric sensing device 2 is arranged on the foot, which can sense the displacement change of the foot, and convert the sensed change into an electrical signal and transmit it to the controller to control the washing machine to run smoothly.

Example 2

Example

As shown in FIG. 4 , the present invention provides a foot structure, including a foot 1 , and the foot 1 is provided with a ball-type displacement sensing device 4 for detecting the displacement change of the foot.

In the embodiment of the present invention, the foot 1 is arranged at the bottom of the washing machine, and is inserted into the washing machine from the bottom of the washing machine, so that the foot is fixed on the washing machine, the foot 1 supports the washing machine to leave the ground, and the foot 1 bears the weight of the washing machine; The whole dehydration process is divided into 3 stages, one of which is the dehydration acceleration stage. The motor speed of the washing machine is accelerated from 0 to a certain speed. The curve of this stage is characterized by high amplitude and low frequency. The amplitude of the curve can characterize the washing tub. If the vibration is too large, there is a danger of hitting the box body. It is necessary to stop dehydration and rebalance the clothes in the bucket;

The washing machine is provided with a controller, the rolling ball displacement sensing device 4 is connected to the controller, and the rolling ball displacement sensing device 4 senses the displacement change of the foot 1 due to vibration, converts it into an electrical signal and transmits it to the controller , the controller controls the washing machine to stop dehydration according to the electric signal, and senses the displacement change of the foot 1 through the ball-type displacement sensing device 4, which realizes the precise control of the unbalanced displacement caused by the vibration of the washing machine during dehydration, and improves the safety and reliability of the washing machine. sex;

Specifically, the electrical signal can be voltage, current, frequency, PWM (pulse width), etc., and the rolling ball displacement sensing device 4 also includes a lead (not shown in the figure) of the rolling ball displacement sensing device 4 connected to the controller. , so as to facilitate the connection of the rolling ball displacement sensing device 4 with the controller.

In the embodiment of the present invention, the bottom of the foot is provided with a first groove 11 with a downward opening, and the ball-type displacement sensing device 4 is arranged in the first groove 11, and the lowest end thereof is the lowest end of the bottom of the foot. flush.

In the embodiment of the present invention, the rolling ball displacement sensing device 4 is arranged in the first groove 11, the opening of the first groove 11 is downward, and the rolling ball displacement sensing device 4 is disposed in the first groove through the opening 11, the first groove 11 has a guiding effect on the rolling ball displacement sensing device 4, limiting the rolling ball displacement sensing device 4 in a certain space; the rolling ball displacement sensing device 4 can be placed in the first The groove 11 rolls in order to adapt to the displacement change of the foot 1; the lowest end of the rolling ball displacement sensing device 4 is flush with the lowest end of the bottom of the foot 1, so that the lowest end has contact with the ground.

As shown in FIG. 4 and FIG. 5 , in the embodiment of the present invention, the rolling ball displacement sensing device 4 includes a rolling ball 41 , two rolling shafts 42 , a pressing wheel 44 and two rolling shaft encoders 43 ;

The two rolling shafts 42 are vertically arranged, and are rotatably arranged on the groove wall of the first groove 11, the rolling ball 41 is placed between the two rolling shafts 42, and a pressing wheel 44 is provided on one side thereof. 44 is rotatably arranged on the groove wall of the first groove 11, each rolling shaft 42 and the pressing theory have one end in tangential contact with the rolling ball 41, and each rolling shaft 42 is provided with a rolling shaft encoder 43. , the bottommost end of the rolling ball 41 is flush with the bottommost end of the bottom of the foot.

In the embodiment of the present invention, when the foot 1 is installed on the washing machine, the bottom end of the rolling ball 41 is in contact with the ground. When the foot 1 of the washing machine is displaced due to vibration, the vibration of the washing machine makes the rolling ball 41 roll on the ground. , the rolling of the rolling ball 41 drives the rolling shaft to rotate. Since the rolling shaft encoder 43 is set on the rolling shaft 42, the rolling shaft encoder 43 generates corresponding displacement change data, and converts the corresponding change data into electrical signals and transmits them. To the controller, the controller controls the washing machine to stop dehydration according to the electrical signal, which can accurately reflect the change of the displacement of the foot 1;

The scroll shaft encoder 43 is wirelessly connected with the controller of the washing machine, the scroll shaft encoder 43 is connected with a wireless sending module, the washing machine is provided with a wireless receiving module, the wireless receiving module is wirelessly connected with the wireless sending module, and the wireless receiving module is connected with the control of the washing machine. It can reduce the use of wires and avoid the leakage of wires due to the humidity of the external environment;

The wireless sending module and the wireless receiving module are wirelessly connected through any one or a combination of GPRS, Bluetooth or WiFi. When the wireless sending module and the wireless receiving module are wirelessly connected through Bluetooth, the wireless sending module is a Bluetooth sending module, and the wireless receiving module is a Bluetooth sending module. The module is a Bluetooth receiving module.

In the embodiment of the present invention, the foot 1 is further provided with a normally closed switch 3 for detecting changes in the displacement of the foot, and the normally closed switch 3 and the ball-type displacement sensing device 4 are arranged independently of each other.

In the embodiment of the present invention, the foot 1 is also provided with a normally closed switch 3. The normally closed switch 3 is used to detect the displacement change of the foot, and can assist the ball-type displacement sensing device 4 to detect the displacement of the foot. The detection accuracy is improved, and the normally closed switch 3 can cope with the situation that the ball-type displacement sensing device 4 has poor induction or the ball-type displacement sensing device 4 is damaged.

In the embodiment of the present invention, the normally closed switch 3 can also be arranged in the first groove 11 and slide in the first groove 11 along the axial direction of the foot, and part of the normally closed switch 3 is exposed in the first groove 11 outside.

In the embodiment of the present invention, the first groove 11 has a guiding function for the normally closed switch 3, and limits the normally closed switch 3 in a certain space; the normally closed switch 3 can slide in the first groove 11 to adapt to the The displacement of the foot changes; part of the normally closed switch 3 is exposed outside the first groove 11 , that is, the normally closed switch 3 protrudes downward relative to the foot to make contact with the ground.

In the embodiment of the present invention, the bottom of the foot is further provided with a second groove with a downward opening. The second groove and the first groove 11 are independent of each other. The normally closed switch 3 is arranged in the second groove along the bottom. The axial direction of the foot slides in the second groove, and part of the normally closed switch 3 is exposed outside the second groove.

In the embodiment of the present invention, the normally closed switch 3 is disposed in the second groove, the opening of the second groove is downward, the normally closed switch 3 is disposed in the second groove through the opening, and the second groove is opposite to the normally closed switch. 3 has a guiding function, limiting the normally closed switch 3 in a certain space; the normally closed switch 3 can slide in the second groove to adapt to the displacement change of the foot; part of the normally closed switch 3 is exposed in the second groove In addition, that is, the normally closed switch 3 protrudes downward relative to the foot, in order to make contact with the ground.

In the embodiment of the present invention, the bottom of the foot is provided with a first groove 11 and several second grooves, the first groove 11 is located at the center of the bottom of the foot, and the plurality of second grooves are along the first groove 11 distributed in a circle in the circumferential direction.

In the embodiment of the present invention, a first groove 11 and a plurality of second grooves are arranged on the bottom of the foot, that is, a ball-type displacement sensing device 4 and a plurality of normally closed switches 3 are arranged on the bottom of the foot, On the basis of ensuring that the ball-type displacement sensing device 4 can sense the displacement change of the center of the bottom of the foot, several normally closed switches 3 can sense the displacement of other parts of the bottom of the foot, thereby increasing the sensing range.

As shown in FIG. 6 , in the embodiment of the present invention, a normally closed switch 3 for detecting the displacement change of the base is further provided on the foot, and the normally closed switch 3 and the ball-type displacement sensing device 4 are integrated into one body.

In the embodiment of the present invention, the normally closed switch 3 and the ball-type displacement sensing device 4 are integrated into one body to reduce the space occupation on the feet, and the ball-type displacement sensing device 4 and the normally closed switch 3 appear in vibration When working at the same time, it can improve the sensitivity to displacement changes;

Specifically, the top of the normally closed switch 3 is provided at the bottom of the first groove 11 , and the bottom of the normally closed switch 3 is provided with a ball-type displacement sensing device 4 .

In the embodiment of the present invention, the normally closed switch 3 includes an elastic member, a button, a movable contact arranged on the button, and a static contact arranged at the bottom of the first groove 11 or the bottom of the second groove;

The elastic piece extends along the axial direction of the foot, one end of the elastic piece is connected with the static contact, the other end is in contact with the moving contact, and the static contact is elastically electrically connected with the moving contact;

The button slides in the second groove, and part of it is exposed outside the second groove; or, the rolling ball 41 is rotatably arranged on the bottom of the button.

In the embodiment of the present invention, when the normally closed switch 3 is arranged in the second groove, under the influence of the weight of the washing machine, the button is pressed, and the rolling ball 41 rolls, and the elastic member is squeezed by the external force and elastically deformed, The moving contact and the static contact abutting on the button are closed, and the current is connected to form a loop. When moving violently, the button part is instantly released, the button is released, the external force on the elastic piece is removed, and the elastic force of the elastic piece is released, so that the moving contact connected to the button and the moving contact The circuit between the static contacts is disconnected, and the current is open. The static contacts transmit the open-circuit signal to the controller of the washing machine. When the controller of the washing machine detects the open-circuit signal, the controller controls the washing machine to stop dehydration;

When the top of the normally closed switch 3 is set at the bottom of the first groove 11, and the displacement of the foot changes due to vibration, the rolling ball 41 rolls and the elastic force of the elastic member is released; the rolling ball 41 is rotatably arranged at the bottom of the button, Including the rolling ball 41 abutting with the bottom of the button, or, the rolling ball 41 being rotatably connected with the bottom of the button;

The static contact is wirelessly connected with the controller of the washing machine, and the static contact is connected with a wireless sending module. The washing machine also has a wireless receiving module. The wireless connection between the head and the washing machine controller; the wireless sending module and the static contact are independent of each other, or integrated with the static contact to reduce the use of the wire and avoid the leakage of the wire due to the humidity of the external environment;

The wireless sending module and the wireless receiving module are wirelessly connected through any one or a combination of GPRS, Bluetooth or WiFi. When the wireless sending module and the wireless receiving module are wirelessly connected through Bluetooth, the wireless sending module is a Bluetooth sending module, and the wireless receiving module is a wireless sending module. The module is a Bluetooth receiving module.

The present invention also provides a washing machine, which includes a washing machine body, and also includes the foot structure provided by the above technical solution. The foot structure 1 includes four feet arranged at four corners of the washing machine body, and the bottom of at least one foot is provided with There is a rolling ball displacement sensing device in contact with the ground.

In the embodiment of the present invention, the washing machine body includes a box body and a dehydration bucket. The dehydration bucket is rotatably arranged in the dehydration bucket, and the feet are arranged at the bottom of the box body. The load of the dehydration bucket is unbalanced and hits the box body. Vibration is generated, and the displacement changes. The ball-type displacement sensing device is installed on the foot, which can sense the displacement change of the foot, and convert the sensed change into an electrical signal and transmit it to the controller to control the washing machine to run smoothly.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Within the scope of the technical solution of the present invention, personnel can make some changes or modifications to equivalent examples of equivalent changes by using the above-mentioned technical content, but any content that does not depart from the technical solution of the present invention is based on the technical solution of the present invention. Substantially 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 (10)

1. A footing structure comprises a footing and is characterized in that a displacement sensing device for detecting the displacement change of the footing is arranged on the footing.

2. A foot construction according to claim 1, characterised in that the displacement sensing means comprises opto-electronic sensing means or ball-type displacement sensing means.

3. A foot structure as claimed in claim 2, wherein the bottom of the foot is provided with a first groove with a downward opening, the photoelectric sensing device is arranged in the first groove and slides in the first groove along the axial direction of the foot, and part of the photoelectric sensing device is exposed out of the first groove; or,

the rolling ball type displacement sensing device is rotatably arranged in the first groove, and the lowest end of the rolling ball type displacement sensing device is flush with the lowest end of the bottom foot.

4. A foot structure according to claim 3, characterized in that the photoelectric sensing means comprises a light emitting element, a light receiving element, a light reflecting element and a first resilient element, the light reflecting element being provided with a light reflecting surface;

the light emitting piece and the light receiving piece are arranged at the bottom of the first groove, the first elastic piece extends along the axial direction of the bottom foot, one end of the first elastic piece is arranged at the bottom of the first groove, the other end of the first elastic piece is arranged on the light reflecting piece, the light reflecting piece slides in the first groove, part of the light reflecting piece is exposed out of the first groove, and a light reflecting surface on the light reflecting piece faces towards the bottom of the first groove.

5. A footing structure according to claim 3, wherein the rolling ball type displacement sensing means comprises a rolling ball, two rolling shafts, a pinch roller, and two rolling shaft encoders;

two rolling axles set up perpendicularly, and rotationally locate on the cell wall of first recess, the spin is placed between two rolling axles, and its one side is equipped with the pinch roller, and on the cell wall of first recess was rotationally located to the pinch roller, all had one end and the tangent contact of spin on every rolling axle and the theory of compressing tightly, establish a rolling axle encoder on every rolling axle, the bottommost of spin flushes with the bottommost of footing bottom.

6. A footing structure according to any one of claims 2-5, characterized in that the footing is further provided with a normally closed switch for detecting a change in footing displacement, the normally closed switch being provided independently of the photoelectric sensing device or the rolling ball type displacement sensing device, or the normally closed switch being provided integrally with the photoelectric sensing device or the rolling ball type displacement sensing device.

7. A foot structure as claimed in claim 6, wherein the bottom of the foot is further provided with a second groove with a downward opening, the second groove is independent from the first groove, the normally-closed switch is disposed in the second groove and slides in the second groove along the axial direction of the foot, and a part of the normally-closed switch is exposed out of the second groove and flush with a part of the photoelectric sensing device exposed out of the first groove.

8. A footing structure according to claim 6, wherein the top of the normally closed switch is disposed at the bottom of the first recess, and the bottom of the normally closed switch is provided with a photoelectric sensing device or a rolling ball type displacement sensing device.

9. A foot structure according to claim 8, wherein the normally closed switch comprises a second elastic member, a button, a movable contact arranged on the button, and a fixed contact arranged at the bottom of the first groove;

the second elastic element extends along the axial direction of the bottom foot, one end of the second elastic element is connected with the fixed contact, the other end of the second elastic element is abutted against the moving contact, and the fixed contact is elastically and electrically connected with the moving contact;

the bottom of the button is provided with a light emitting piece and a light receiving piece; alternatively, the ball may be rotatably mounted to the bottom of the button.

10. A washing machine, characterized in that the bottom of the washing machine is provided with a foot construction according to any one of claims 1-9.

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