Automatic detection device and method for leveling of washing machine

Abstract

The invention provides an automatic detection device and method for washing machine leveling, the device comprises a contact switch device, the contact switch device is arranged in a cavity of a washing machine footing, and the washing machine footing has elasticity; the contact switch device comprises a first contact and a second contact which are distributed in the height direction, and the second contact is arranged close to the bottom of the washing machine footing. The first contact and the second contact are used for being close to each other and connected when the washing machine footing deforms so as to detect the leveling state of the washing machine footing. Under the combined action of the gravity of the washing machine and the extrusion of the ground, the two ends of the washing machine footings are compressed towards the middle. The first contact and the second contact move oppositely until the first contact and the second contact abut against each other, and a loop of the detection circuit is formed. The self gravity of the washing machine is utilized to compress the footing of the washing machine, whether the first contact and the second contact are conducted or not is detected, and the stress state of the footing can be automatically detected, so that the leveling process is simplified, and the leveling accuracy and convenience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and in particular to an automatic detection device and method for washing machine leveling. Background Art

[0002] If the four feet of a household drum or pulsator washing machine are not leveled during installation (because one or two of the feet are not actually touching the ground), the washing machine's center of gravity will be unstable during operation. This is especially true when spinning clothes. The high-speed rotation of the drum can cause the unbalanced center of gravity to generate significant force, causing the machine to vibrate violently. This can not only affect the washing process but also damage the internal structure or cause the machine to shift, affecting normal use.

[0003] Some existing technologies use multiple sensors such as acceleration sensors and tilt sensors to detect the tilt angle of the washing machine, and then calculate and analyze the collected data through a controller program. Applying this to various types of washing machines will result in high costs.

[0004] Therefore, there is a need for a low-cost automatic detection device for washing machine leveling that can be integrated into the base of a washing machine and automatically detect whether the base of the washing machine is leveled. Summary of the Invention

[0005] In order to overcome the problems existing in the related art, the purpose of the present invention is to provide an automatic detection device and method for washing machine leveling, wherein the device can be integrated inside the washing machine base to automatically detect whether the washing machine base is leveled, and the cost is low.

[0006] An automatic detection device for washing machine leveling includes a contact switch device, the contact switch device being disposed in a cavity of a washing machine base, the washing machine base being elastic; the contact switch device including a first contact and a second contact distributed along a height direction, the second contact being disposed near the bottom of the washing machine base; the first contact and the second contact being configured to approach each other and connect when the washing machine base is deformed, thereby detecting the leveling state of the washing machine base.

[0007] After installing the contact switch device in the cavity of the washing machine foot, place the washing machine foot on the installation position, such as the ground. Under the combined action of the gravity of the washing machine itself and the extrusion of the ground, the washing machine foot will produce a compressive deformation towards the middle, that is, both ends of the washing machine foot compress towards the middle. The first contact moves towards the second contact, and the second contact moves towards the first contact until the first contact and the second contact abut. At this time, the first contact and the second contact are connected, forming a loop of the detection circuit. If the detection circuit detects an electrical signal, it indicates that the first contact and the second contact have been connected and the washing machine foot has been leveled. If the detection circuit does not detect an electrical signal, it indicates that the first contact and the second contact have not been connected and the washing machine foot is not leveled. The present invention utilizes the gravity of the washing machine itself to compress the washing machine foot, and arranges the first contact and the second contact inside the washing machine foot. When the washing machine is leveled, the first contact and the second contact will abut against each other and form an electrical circuit path, realizing the automatic detection of the force state of the foot, thereby simplifying the leveling process and improving the accuracy and convenience of leveling. At the same time, the design cost of the automatic detection device for leveling the washing machine of the present invention is relatively low, enhancing the user experience.

[0008] In a preferred technical solution of the present invention, the contact switch device further includes a first bracket and a second bracket. The first bracket is arranged on a side of the first contact away from the second contact, and the second bracket is arranged on a side of the second contact away from the first contact; the first contact is fixedly connected to the first bracket, and the second contact is fixedly connected to the second bracket.

[0009] The first bracket is used to fix the first contact, and the second bracket is used to fix the second contact. The first bracket is installed on the side wall of one side of the cavity of the washing machine foot, and the second bracket is installed on the side wall of the other side of the cavity of the washing machine foot. The first bracket and the second bracket can be plate-like structures parallel to each other, or bracket structures with connecting members. The connecting members are connected to the supporting part connected with the first contact and the second contact, and the connecting members are used to strengthen the structural strength of the supporting part.

[0010] In a preferred technical solution of the present invention, the first contact is connected with a first control line, the second contact is connected with a second control line, and the first control line and the second control line are respectively connected to different ports of the controller.

[0011] The first control line is connected to the first detection port of the controller, and the second control line is connected to the second detection port of the controller to connect the first contact and the second contact to the controller respectively.

[0012] In a preferred technical solution of the present invention, the first control line is connected to the first bracket, and the second control line is connected to the second bracket.

[0013] The first control line is connected to the first bracket, and the second control line is connected to the second bracket. The two control lines, the two brackets, the two contacts, and the controller together form the loop of the detection circuit. The current flows out from the first detection port of the controller and successively passes through the first control line, the first bracket, the first contact, the second contact, the second bracket, and the second control line, and then flows to the second detection port of the controller.

[0014] In a preferred technical solution of the present invention, the contact switch device further includes a fixing block, which is arranged on the side of the first bracket away from the first contact, and the fixing block is used to fix the first bracket in the cavity of the washing machine foot.

[0015] The fixing block is arranged between the first bracket and the bolt, and both sides of the fixing block are respectively in contact with the first bracket and the bolt.

[0016] In a preferred technical solution of the present invention, the automatic detection device for leveling the washing machine further includes a bolt, which is inserted into the cavity of the washing machine foot and connected to the fixing block, and the bolt is used to adjust the height of the washing machine foot.

[0017] The function of the bolt is to fix the washing machine feet at the four bottom corners of the washing machine. Insert the bolt into the washing machine foot and rotate the bolt clockwise or counterclockwise to adjust the height of the washing machine foot. The bolt is inserted into the washing machine foot and abuts against the fixing block, thereby playing a supporting role for the first bracket.

[0018] In a preferred technical solution of the present invention, an anti-lock nut is connected to the side of the bolt close to the cavity of the washing machine foot, and the anti-lock nut is used to fix the height of the washing machine foot.

[0019] The anti-lock nut is inserted into the bolt from the side of the bolt. Screw in the anti-lock nut so that the anti-lock nut abuts against the bolt to limit the movement of the bolt in the height direction. At this time, the height of the bolt is fixed, thereby preventing the height of the washing machine foot from changing during the operation of the washing machine. Unscrew the anti-lock nut so that the anti-lock nut is separated from the bolt. At this time, the bolt can move in the height direction to adjust the height of the washing machine foot.

[0020] In a preferred technical solution of the present invention, there is a gap between the first contact and the second contact, and the width of the gap is adjustable.

[0021] When the washing machine foot does not deform, the width of the gap between the first contact and the second contact is the largest. During the deformation of the washing machine foot, the first contact and the second contact approach each other, and the width of the gap between the first contact and the second contact gradually decreases until the first contact and the second contact touch and connect the circuit, and the width of the gap between the first contact and the second contact is the smallest.

[0022] In a preferred technical solution of the present invention, the second bracket abuts against the side of the cavity of the washing machine foot away from the fixed block.

[0023] The second contact is fixed on the second bracket. When the washing machine foot deforms, the cavity of the washing machine foot is compressed, and the second bracket is squeezed by the side of the cavity of the washing machine foot away from the fixed block, and the second bracket moves upward in the height direction.

[0024] In a preferred technical solution of the present invention, the outer side of the washing machine foot is wrapped with a rubber pad, and the rubber pad is used to reduce the external force received by the washing machine foot when placing the washing machine.

[0025] The rubber pad has good shock absorption and anti-slip properties. The rubber pad also has sufficient elasticity and wear resistance to adapt to different ground conditions. Utilizing the good properties of the rubber pad, when the washing machine is running at high speed, it not only has a shock-absorbing effect on the washing machine, but also reduces the impact of the washing machine on the floor, avoiding the loosening of the washing machine feet or the displacement of the body caused by the long-term vibration of the washing machine.

[0026] An automatic detection method for washing machine leveling, based on an automatic detection device for washing machine leveling, the method includes:

[0027] Connect the contact switch device to the controller through the first control line and the second control line;

[0028] Place the washing machine foot on the installation position, and the installation position is a horizontal plane;

[0029] Detect whether the controller receives an electrical signal. If so, it is determined that the washing machine foot is leveled;

[0030] If the controller does not receive an electrical signal, it is determined that the washing machine foot is not leveled.

[0031] During the detection, first connect the contact switch device of the washing machine foot to the controller through the first control line and the second control line. The controller has the ability to monitor and adjust the state of the contact switch device and can issue corresponding prompt messages. Then place the washing machine foot on a horizontal ground, and the controller starts to detect the state of the contact switch device of the washing machine foot. When the controller receives the electrical signal of the washing machine foot, it can be determined that the washing machine foot is in a leveled state. When the controller does not receive the electrical signal of the washing machine foot, it can be determined that the washing machine foot is in an unleveled state. The user can judge whether the washing machine foot is in a leveled state according to the prompt of whether the controller receives an electrical signal. If the washing machine foot is in an unleveled state, the user can manually level the washing machine foot.

[0032] The beneficial effects of the present invention are:

[0033] The present invention provides an automatic detection device for washing machine leveling, including a contact switch device, which is arranged in the cavity of the washing machine base feet, and the washing machine base feet have elasticity; the contact switch device includes a first contact and a second contact distributed along the height direction, and the second contact is arranged close to the bottom of the washing machine base feet; the first contact and the second contact are used to approach and connect with each other when the washing machine base feet are deformed, so as to detect the leveling state of the washing machine base feet. After installing the contact switch device in the cavity of the washing machine base feet, place the washing machine base feet on the installation position, such as the ground. Under the combined action of the self-gravity of the washing machine and the extrusion of the ground, the washing machine base feet will generate a compressive deformation towards the middle, that is, the two ends of the washing machine base feet are compressed towards the middle. The first contact moves towards the direction close to the second contact, and the second contact moves towards the direction close to the first contact until the first contact and the second contact abut, at this time the first contact and the second contact are connected, forming a loop of the detection circuit. If the detection circuit detects an electrical signal, it indicates that the first contact and the second contact have been connected and the washing machine base feet have been leveled. If the detection circuit does not detect an electrical signal, it indicates that the first contact and the second contact have not been connected and the washing machine base feet have not been leveled. The present invention utilizes the self-gravity of the washing machine to compress the washing machine base feet, and arranges the first contact and the second contact inside the washing machine base feet. When the washing machine is leveled, the first contact and the second contact will abut against each other and form a circuit path, realizing the automatic detection of the force state of the base feet, thus simplifying the leveling process and improving the accuracy and convenience of leveling. At the same time, the design cost of the automatic detection device for washing machine leveling of the present invention is relatively low, improving the user experience. Description of the Drawings

[0034] Figure 1 is a schematic structural diagram of the automatic detection device for washing machine leveling of the present invention;

[0035] Figure 2 is a flowchart of the automatic detection method for washing machine leveling of the present invention.

[0036] Reference Numerals: 1, washing machine base feet; 2, cavity; 3, first contact; 4, second contact; 5, first bracket; 6, second bracket; 7, first control line; 8, second control line; 9, controller; 10, fixing block; 11, bolt; 12, locknut; 13, rubber pad. Detailed Embodiments

[0037] The preferred embodiments of the present invention will be described in more detail below with reference to the drawings. Although the preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0038] Example 1

[0039] As Figure 1 shown, this embodiment provides an automatic detection device for washing machine leveling, including a contact switch device. The contact switch device is arranged in the cavity 2 of the washing machine foot 1, and the washing machine foot 1 has elasticity; the contact switch device includes a first contact 3 and a second contact 4 distributed along the height direction, and the second contact 4 is arranged close to the bottom of the washing machine foot 1; the first contact 3 and the second contact 4 are used to approach and connect with each other when the washing machine foot 1 deforms, so as to detect the leveling state of the washing machine foot 1.

[0040] There are 2 or 4 washing machine feet 1, and the washing machine feet 1 are made of materials that can deform. In this embodiment, there are 4 washing machine feet 1, and the material of the washing machine feet 1 is rubber as an example. The washing machine feet 1 will deform when stressed, and the first contact 3 and the second contact 4 in the cavity 2 will move relatively. The leveling state includes two states, one state is leveled, and the other state is unleveled.

[0041] First, install the contact switch device in each washing machine foot 1 of the washing machine, and then place the washing machine feet 1 on the installation position such as the ground. Under the combined action of the gravity of the washing machine itself and the reaction force exerted by the installation position, the washing machine feet 1 deform, and the two ends of the washing machine feet 1 are compressed towards the middle.

[0042] The first contact 3 is located above the second contact 4, the second contact 4 is located on the side close to the contact surface between the washing machine foot 1 and the installation position, and the first contact 3 is located on the side far from the contact surface between the washing machine foot 1 and the installation position. Under the action of gravity, the first contact 3 moves downward, the washing machine foot 1 presses the installation position, and the installation position exerts a reverse force on the washing machine foot 1, causing the second contact 4 to move upward.

[0043] During the compression process of the washing machine foot 1, the first contact 3 moves towards the second contact 4, and the second contact 4 moves towards the first contact 3, that is, the first contact 3 and the second contact 4 move towards each other until the first contact 3 and the second contact 4 abut. Since both the first contact 3 and the second contact 4 are made of conductive materials, when the first contact 3 and the second contact 4 contact, a loop of the detection circuit will be formed. If the detection circuit detects the electrical signal at the contact switch composed of the first contact 3 and the second contact 4, it means that the first contact 3 and the second contact 4 abut, and the corresponding washing machine foot 1 is leveled, that is, the corresponding washing machine foot 1 is horizontally placed on the installation position.

[0044] When the first contact 3 and the second contact 4 of each washing machine foot 1 are conducted, it is determined that all the washing machine feet 1 are leveled. When the first contact 3 and the second contact 4 of one or more washing machine feet 1 are not conducted, it is determined that the corresponding washing machine foot 1 is not leveled.

[0045] The present invention only needs to integrate a contact switch device in the washing machine foot 1 to realize automatic detection of whether the washing machine foot 1 is leveled. A cavity 2 is opened inside the washing machine foot 1 of the present invention, making full use of the internal space of the washing machine foot 1. The first contact 3 and the second contact 4 in this embodiment are both made of metal sheets, which have the advantage of low cost.

[0046] This embodiment provides an automatic detection device for washing machine leveling, including a contact switch device. The contact switch device is arranged in the cavity 2 of the washing machine foot 1, and the washing machine foot 1 has elasticity; the contact switch device includes a first contact 3 and a second contact 4 distributed along the height direction, and the second contact 4 is arranged close to the bottom of the washing machine foot 1; the first contact 3 and the second contact 4 are used to approach and connect with each other when the washing machine foot 1 deforms, so as to detect the leveling state of the washing machine foot 1. After the contact switch device is installed in the cavity 2 of the washing machine foot 1, the washing machine foot 1 is placed on an installation position such as the ground. Under the combined action of the self-gravity of the washing machine and the extrusion of the ground, the washing machine foot 1 will generate a compressive deformation towards the middle, that is, both ends of the washing machine foot 1 are compressed towards the middle. The first contact 3 moves towards the direction close to the second contact 4, and the second contact 4 moves towards the direction close to the first contact 3 until the first contact 3 and the second contact 4 are in contact. At this time, the first contact 3 and the second contact 4 are conducted, forming a loop of the detection circuit. If the detection circuit detects an electrical signal, it means that the first contact 3 and the second contact 4 have been conducted, and the washing machine foot 1 is leveled. If the detection circuit does not detect an electrical signal, it means that the first contact 3 and the second contact 4 are not conducted, and the washing machine foot 1 is not leveled. The present invention uses the self-gravity of the washing machine to compress the washing machine foot 1, and the first contact 3 and the second contact 4 are arranged inside the washing machine foot 1. When the washing machine is leveled, the first contact 3 and the second contact 4 will contact each other and form a circuit path, realizing automatic detection of the force state of the foot, thereby simplifying the leveling process and improving the accuracy and convenience of leveling. At the same time, the design cost of the automatic detection device for washing machine leveling of the present invention is relatively low, improving the user experience.

[0047] Embodiment 2

[0048] As Figure 1As shown in the figure, this embodiment provides an automatic detection device for washing machine leveling, including a contact switch device. The contact switch device is arranged in the cavity 2 of the washing machine foot 1, and the washing machine foot 1 has elasticity. The contact switch device includes a first contact 3 and a second contact 4 distributed along the height direction, and the second contact 4 is arranged close to the bottom of the washing machine foot 1. The first contact 3 and the second contact 4 are used to approach and connect with each other when the washing machine foot 1 deforms, so as to detect the leveling state of the washing machine foot 1.

[0049] The contact switch device further includes a first bracket 5 and a second bracket 6. The first bracket 5 is arranged on the side of the first contact 3 away from the second contact 4, and the second bracket 6 is arranged on the side of the second contact 4 away from the first contact 3. The first contact 3 is fixedly connected to the first bracket 5, and the second contact 4 is fixedly connected to the second bracket 6.

[0050] The first bracket 5 is used to fix the first contact 3, and the second bracket 6 is used to fix the second contact 4. The first bracket 5 is installed on the side wall of one side of the cavity 2 of the washing machine foot 1, and the second bracket 6 is installed on the side wall of the other side of the cavity 2 of the washing machine foot 1.

[0051] The first bracket 5 and the second bracket 6 can be plate-like structures parallel to each other, or bracket structures with connectors. The connectors are connected to the supporting parts connected with the first contact 3 and the second contact 4, and the connectors are used to strengthen the structural strength of the supporting parts.

[0052] The first control line 7 is connected to the first bracket 5, and the second control line 8 is connected to the second bracket 6. The first control line 7 is connected to the first detection port of the controller 9, and the second control line 8 is connected to the second detection port of the controller 9. The first control line 7 is connected to the first bracket 5, and the second control line 8 is connected to the second bracket 6. The two control lines, the two brackets, the two contacts and the controller 9 together form a loop of the detection circuit. The current flows out from the first detection port of the controller 9, and successively flows through the first control line 7, the first bracket 5, the first contact 3, the second contact 4, the second bracket 6 and the second control line 8, and then flows to the second detection port of the controller 9.

[0053] A first lead channel and a second lead channel are opened in the washing machine foot 1, and both the first lead channel and the second lead channel are communicated with the cavity 2 in the washing machine foot 1. The first control line 7 passes through the first lead channel and is connected to the first bracket 5, and the second control line 8 passes through the second lead channel and is connected to the second bracket 6.

[0054] The contact switch device of this embodiment further includes a first bracket 5 and a second bracket 6. The first bracket 5 is arranged on the side of the first contact 3 away from the second contact 4, and the second bracket 6 is arranged on the side of the second contact 4 away from the first contact 3. The first contact 3 is fixedly connected to the first bracket 5, and the second contact 4 is fixedly connected to the second bracket 6. The first contact 3 is connected to a first control line 7, and the second contact 4 is connected to a second control line 8. The first control line 7 and the second control line 8 are respectively connected to different ports of a controller 9. Current flows out from the first detection port of the controller 9, successively flows through the first control line 7, the first bracket 5, the first contact 3, the second contact 4, the second bracket 6 and the second control line 8, and then flows to the second detection port of the controller 9.

[0055] Embodiment 3

[0056] As Figure 1 shown, this embodiment provides an automatic detection device for washing machine leveling, which includes a contact switch device. The contact switch device is arranged in a cavity 2 of a washing machine foot 1, and the washing machine foot 1 has elasticity. The contact switch device includes a first contact 3 and a second contact 4 distributed along the height direction. The second contact 4 is arranged close to the bottom of the washing machine foot 1. The first contact 3 and the second contact 4 are used to approach and connect with each other when the washing machine foot 1 deforms, so as to detect the leveling state of the washing machine foot 1.

[0057] The contact switch device further includes a first bracket 5 and a second bracket 6. The first bracket 5 is arranged on the side of the first contact 3 away from the second contact 4, and the second bracket 6 is arranged on the side of the second contact 4 away from the first contact 3. The first contact 3 is fixedly connected to the first bracket 5, and the second contact 4 is fixedly connected to the second bracket 6.

[0058] The contact switch device further includes a fixing block 10. The fixing block 10 is arranged on the side of the first bracket 5 away from the first contact 3, and the fixing block 10 is used to fix the first bracket 5 in the cavity 2 of the washing machine foot 1.

[0059] The automatic detection device for washing machine leveling further includes a bolt 11. The bolt 11 is inserted into the cavity 2 of the washing machine foot 1 and connected to the fixing block 10, and the bolt 11 is used to adjust the height of the washing machine foot 1.

[0060] Fixing block 10 is positioned between first bracket 5 and bolt 11, with its sides abutting against first bracket 5 and bolt 11, respectively. Bolts 11 secure washing machine foot 1 to the four corners of the washing machine. Inserting bolt 11 into foot 1 and turning it clockwise or counterclockwise adjusts the height of foot 1. Bolts 11 are inserted into foot 1 and abut against fixing block 10, providing support for first bracket 5.

[0061] A locking nut 12 is connected to one side of the bolt 11 close to the cavity 2 of the washing machine base 1 , and the locking nut 12 is used to fix the height of the washing machine base 1 .

[0062] The locking nut 12 is inserted into the bolt 11 from the side. The locking nut 12 is screwed in until it contacts the bolt 11, restricting the height movement of the bolt 11. The height of the bolt 11 is now fixed, preventing the height of the washing machine base 1 from changing during operation. The locking nut 12 is then unscrewed, separating it from the bolt 11. The bolt 11 can now move in the height direction, allowing the height of the washing machine base 1 to be adjusted.

[0063] The washing machine foot 1 of this embodiment is made of rubber material. The rubber foot has good shock absorption and anti-slip properties. The rubber material has sufficient elasticity and wear resistance to adapt to different ground conditions.

[0064] The automatic leveling detection device for washing machines described in this embodiment also includes a bolt 11, which is inserted into the cavity 2 of the washing machine base 1 and connected to the fixing block 10. Bolt 11 is used to adjust the height of the washing machine base 1. A locking nut 12 is connected to the side of bolt 11 near the cavity 2 of the washing machine base 1. This locking nut 12 is used to fix the height of the washing machine base 1. Bolt 11 is inserted into the washing machine base 1 and then rotated clockwise or counterclockwise to adjust the height of the washing machine base 1. After the height of the washing machine base 1 is adjusted, the locking nut 12 is screwed in until it abuts against the bolt 11, thereby fixing the height of the washing machine base 1. If one or more washing machine bases 1 are not leveled, that is, not in contact with the ground, the locking nut 12 of the corresponding washing machine base 1 is unscrewed, separating the locking nut 12 from the bolt 11, thereby adjusting the height of the washing machine base 1 until the washing machine base 1 contacts the ground.

[0065] Example 4

[0066] like Figure 1As shown in the figure, this embodiment provides an automatic detection device for washing machine leveling, including a contact switch device. The contact switch device is arranged in the cavity 2 of the washing machine foot 1, and the washing machine foot 1 has elasticity. The contact switch device includes a first contact 3 and a second contact 4 distributed along the height direction. The second contact 4 is arranged close to the bottom of the washing machine foot 1. The first contact 3 and the second contact 4 are used to approach and connect with each other when the washing machine foot 1 deforms, so as to detect the leveling state of the washing machine foot 1.

[0067] There is a gap between the first contact 3 and the second contact 4, and the width of the gap is adjustable.

[0068] When the washing machine foot 1 does not deform, the width of the gap between the first contact 3 and the second contact 4 is the largest. During the deformation process of the washing machine foot 1, the first contact 3 and the second contact 4 approach each other, and the width of the gap between the first contact 3 and the second contact 4 gradually decreases. Until the first contact 3 and the second contact 4 contact and connect the circuit, the width of the gap between the first contact 3 and the second contact 4 is the smallest.

[0069] The second bracket 6 abuts against the side of the cavity 2 of the washing machine foot 1 away from the fixed block 10.

[0070] The second contact 4 is fixed on the second bracket 6. When the washing machine foot 1 deforms, the cavity 2 of the washing machine foot 1 is compressed. The second bracket 6 is extruded by the side of the cavity 2 of the washing machine foot 1 away from the fixed block 10, and the second bracket 6 moves upward along the height direction. Since the second bracket 6 and the second contact 4 are fixedly connected, the second bracket 6 pushes the second contact 4 upward. The second contact 4 receives an upward acting force from the second bracket 6 until the second contact 4 contacts the first contact 3. At this time, the second contact 4 receives a downward acting force from the first contact 3. At this time, the second contact 4 is simultaneously subjected to upward and downward acting forces, and the upward and downward acting forces are equal. The force on the second contact 4 reaches balance, and the second contact 4 stops moving.

[0071] The outer side of the washing machine foot 1 is wrapped with a rubber pad 13, and the rubber pad 13 is used to reduce the external force received by the washing machine foot 1 when the washing machine is placed.

[0072] The rubber pad 13 has good shock absorption and anti-slip properties. The rubber pad 13 also has sufficient elasticity and wear resistance to adapt to different ground conditions. Utilizing the good properties of the rubber pad 13, when the washing machine is running at high speed, it not only plays a shock-absorbing effect on the washing machine, but also reduces the impact of the washing machine on the floor, avoiding the loosening of the washing machine feet or the displacement of the body caused by the long-term vibration of the washing machine.

[0073] There is a gap between the first contact 3 and the second contact 4 in this embodiment, and the width of the gap is adjustable. The second bracket 6 abuts against the side of the cavity 2 of the washing machine foot 1 away from the fixed block 10. The outside of the washing machine foot 1 is wrapped with a rubber pad 13, and the rubber pad 13 is used to reduce the external force received by the washing machine foot 1 when the washing machine is placed. During the deformation process of the washing machine foot 1, the width of the gap between the first contact 3 and the second contact 4 gradually decreases until the width of the gap between the first contact 3 and the second contact 4 is the smallest when the first contact 3 and the second contact 4 come into contact. During the process of the washing machine foot 1 recovering from deformation, the width of the gap between the first contact 3 and the second contact 4 gradually increases until the width of the gap between the first contact 3 and the second contact 4 is the largest when the washing machine foot 1 returns to the undeformed state. During the process of the first contact 3 and the second contact 4 approaching each other, the second bracket 6 receives an upward acting force, and the second bracket 6 pushes the second contact 4 upward until the first contact 3 and the second contact 4 come into contact. At this time, the second bracket 6 receives a downward acting force, and the force on the second bracket 6 reaches equilibrium, and the second bracket 6 stops pushing the second contact 4 upward. By wrapping the rubber pad 13 around the washing machine foot, when the washing machine is running at high speed or moving, the rubber pad 13 can play a role in shock absorption and buffering for the washing machine, reducing the external force received by the washing machine from the ground, and at the same time greatly extending the service life of the washing machine.

[0074] Embodiment 5

[0075] As Figure 2 shown, this embodiment provides an automatic detection method for washing machine leveling, based on the automatic detection device for washing machine leveling described in any one of Embodiments 1-4. The method includes:

[0076] S1: Connect the contact switch device to the controller through the first control line and the second control line.

[0077] S2: Place the washing machine foot on the installation position, and the installation position is a horizontal plane.

[0078] S3: Detect whether the controller receives an electrical signal. If so, it is determined that the washing machine foot has been leveled.

[0079] S4: If the controller does not receive an electrical signal, it is determined that the washing machine foot is not leveled.

[0080] During detection, first connect the contact switch device of the washing machine foot 1 to the controller 9 through the first control line 7 and the second control line 8. Both the first control line 7 and the second control line 8 are wires. When the contact switch device is in the closed state, the conduction of the circuit can be achieved. The controller 9 determines which washing machine feet 1 need to be adjusted by monitoring the state of the contact switch device of the washing machine feet 1. If it is detected that the pressure of a certain washing machine foot 1 is insufficient, the controller 9 will issue an alarm or prompt the user to make adjustments. For example, the LED light can flash or the display screen can show a prompt message to inform the user which washing machine foot 1 needs to be adjusted.

[0081] Then place the washing machine foot 1 on the installation position, and the installation position is a horizontal plane, such as a flat ground. Then start to detect the working state of the controller 9. When the washing machine is placed on the ground, the controller 9 starts to detect the state of the contact switch device of the washing machine foot 1. If the contact switch device of the washing machine foot 1 is in the closed state, at this time the controller 9 will receive the electrical signal of the washing machine foot 1, indicating that the washing machine foot 1 has received sufficient pressure, then it can be determined that the washing machine foot 1 is in the leveled state. If the contact switch device of the washing machine foot 1 is in the open state, at this time the controller 9 does not receive the electrical signal of the washing machine foot 1, indicating that the washing machine foot 1 has not received sufficient pressure, then it can be determined that the washing machine foot 1 is in the unleveled state. The user can manually level each washing machine foot 1 according to the prompt of the controller 9 until the controller 9 receives the electrical signals of all the washing machine feet 1, which means that all the washing machine feet 1 are evenly stressed. At this time, the controller 9 enters the normal working mode and allows the washing machine to start.

[0082] An automatic detection method for leveling a washing machine in this embodiment includes connecting the contact switch device to a controller 9 through a first control line 7 and a second control line 8; placing the washing machine feet 1 on an installation position, where the installation position is a horizontal plane; detecting whether the controller 9 receives an electrical signal. If so, it is determined that the washing machine feet 1 are leveled; if the controller 9 does not receive an electrical signal, it is determined that the washing machine feet 1 are not leveled. During the detection, first connect the contact switch device of the washing machine feet 1 to the controller 9 through the first control line 7 and the second control line 8. The controller 9 has the ability to monitor and adjust the state of the contact switch device and can issue corresponding prompt messages. Then place the washing machine feet 1 on a horizontal ground, and the controller 9 starts to detect the state of the contact switch device of the washing machine feet 1. When the controller 9 receives an electrical signal from the washing machine feet 1, it can be determined that the washing machine feet 1 are in a leveled state. When the controller 9 does not receive an electrical signal from the washing machine feet 1, it can be determined that the washing machine feet 1 are in an unleveled state. The user can judge whether the washing machine feet 1 are in a leveled state according to the prompt of whether the controller 9 receives an electrical signal. If the washing machine feet 1 are in an unleveled state, the user can manually level the washing machine feet 1.

[0083] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present application. In all examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following figures. Therefore, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

[0084] It should be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be oriented "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both orientations of "above" and "below". The device can also be oriented in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used herein will be interpreted accordingly.

[0085] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above terms have no special meanings. Therefore, they should not be construed as limiting the protection scope of the present application.

[0086] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic detection device for washing machine leveling, characterized in that, It includes a contact switch device which is arranged in the cavity of the washing machine foot. The washing machine foot is elastic. The contact switch device includes a first contact and a second contact which are distributed in the height direction. The second contact is arranged near the bottom of the washing machine foot. The first contact and the second contact are used to approach and connect with each other when the washing machine foot deforms, so as to detect the leveling state of the washing machine foot.

2. The automatic detection device for washing machine leveling according to claim 1, wherein The contact switch device further includes a first bracket and a second bracket. The first bracket is arranged on the side of the first contact away from the second contact, and the second bracket is arranged on the side of the second contact away from the first contact. The first contact is fixedly connected with the first bracket, and the second contact is fixedly connected with the second bracket.

3. The automatic detection device for washing machine leveling according to claim 2, characterized in that, The first contact is connected with a first control line, and the second contact is connected with a second control line. The first control line and the second control line are respectively connected to different ports of the controller.

4. The automatic detection device for washing machine leveling according to claim 3, wherein, The first control line is connected with the first bracket, and the second control line is connected with the second bracket.

5. The automatic detection device for washing machine leveling according to claim 2, wherein, The contact switch device further includes a fixing block which is arranged on the side of the first bracket away from the first contact. The fixing block is used to fix the first bracket in the cavity of the washing machine foot.

6. The automatic detection device for washing machine leveling according to claim 5, characterized in that The automatic detection device for washing machine leveling further includes a bolt which is inserted into the cavity of the washing machine foot and connected with the fixing block. The bolt is used to adjust the height of the washing machine foot.

7. The automatic detection device for washing machine leveling according to claim 6, characterized in that, An anti-lock nut is connected to the side of the bolt close to the cavity of the washing machine foot. The anti-lock nut is used to fix the height of the washing machine foot.

8. The automatic detection device for washing machine leveling according to claim 1, characterized in that, There is a gap between the first contact and the second contact, and the width of the gap is adjustable.

9. The automatic detection device for washing machine leveling according to claim 6, wherein, The second bracket abuts against the side of the cavity of the washing machine foot away from the fixing block.

10. The automatic detection device for washing machine leveling according to claim 1, characterized in that, The outer side of the washing machine foot is wrapped with a rubber pad which is used to reduce the external force received by the washing machine foot when placing the washing machine.

11. An automatic detection method for washing machine leveling, characterized in that, Based on the automatic detection device for washing machine leveling according to any one of claims 1-10, the method includes: Connect the contact switch device to the controller through the first control line and the second control line; Place the washing machine foot on the installation position, and the installation position is a horizontal plane; Detect whether the controller receives an electrical signal. If so, it is determined that the washing machine foot has been leveled; If the controller does not receive an electrical signal, it is determined that the washing machine foot is not leveled.

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