Safety switch and washing machine

Abstract

The present invention discloses a safety switch and a washing machine. The safety switch comprises a housing, a conductive fixed body, and a conductive movable body. The housing defines a mounting cavity, the conductive fixed body being fixedly disposed within the mounting cavity, and the conductive movable body being suspended within the mounting cavity. The conductive movable body can contact the conductive fixed body by moving a predetermined distance in any direction, and the conductive fixed body and the conductive movable body are connected to generate an electrical signal. The safety switch has no specific operating direction and is fixed to the outer wall of the washing machine's outer tub. It is unaffected by changes in the outer tub's trajectory and can monitor the movement of the washing machine regardless of the direction in which the outer tub swings, thereby improving washing machine performance and user experience.

Description

Technical Field

[0001] The present invention relates to the technical field of washing machines, and in particular to a safety switch without a specific action direction and a washing machine. Background Art

[0002] When the clothes are eccentric during washing or dehydration, the outer drum of the washing machine will swing. During the design phase of the washing machine, the movement trajectory of the outer drum when it is eccentric is calculated to determine the installation position of the safety switch. Figure 1 The safety switch 300 is installed on the control panel of the washing machine and is located in the gap between the outer tub 200 and the housing 100. Only when the outer tub 200 swings in a specific direction will it touch the safety switch 300 and cause it to operate. This requires the outer tub 200 to swing along a specific trajectory.

[0003] When the outer barrel's trajectory changes and deviates, the following two problems may occur:

[0004] 1. When the clothes are slightly off-center, the safety switch is frequently triggered to perform balancing operations or alarm and stop the machine, which results in longer washing time and waste of water and electricity.

[0005] 2. When the clothes are heavily eccentric, the safety switch is not triggered, causing the outer barrel to continuously hit the box body and produce abnormal noise.

[0006] The above information disclosed in this background technology is only used to increase the understanding of the background technology of this application. Therefore, it may contain information that does not constitute the prior art known to ordinary technicians in this field. Summary of the Invention

[0007] In response to the problems pointed out in the background technology, the present invention proposes a safety switch and a washing machine. The safety switch is a switch without a specific action direction and is not affected by changes in the trajectory of the outer drum. No matter which direction the outer drum swings, it can play a monitoring role, thereby improving the performance of the washing machine and the user experience.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0009] The present invention provides a safety switch, comprising:

[0010] a housing, forming a mounting cavity therein;

[0011] a conductive fixed body, which is fixed in the installation cavity;

[0012] A conductive movable body, which is suspended in the installation cavity;

[0013] The conductive movable body can touch the conductive fixed body when it moves a preset distance in any direction, and the conductive fixed body and the conductive movable body are connected to generate an electrical signal.

[0014] In some embodiments of the present application, the conductive fixed body comprises two spaced-apart metal sheets, each of which is provided with a first through hole, and the two first through holes on the two metal sheets face each other.

[0015] The conductive movable body is located in a space surrounded by the two first through holes, and there is a certain distance between the conductive movable body and the inner walls surrounding the first through holes.

[0016] In some embodiments of the present application, the conductive movable body is a metal ball, and the diameter of the metal ball is greater than the distance between the two metal sheets.

[0017] In some embodiments of the present application, both sides of the conductive movable body are suspended in the installation cavity via elastic hangers.

[0018] In some embodiments of the present application, the conductive fixed body is a hollow cylindrical structure having a through hole;

[0019] The conductive movable body is two metal sheets arranged at intervals;

[0020] The two metal sheets are connected via an insulating column, and the two metal sheets are respectively suspended in the installation cavity via elastic hangers;

[0021] The two metal sheets are located in the through hole of the conductive fixing body. There is a certain distance between the metal sheets and the inner wall of the through hole of the conductive fixing body. The height of the conductive fixing body is greater than the height of the structure formed by the two metal sheets.

[0022] In some embodiments of the present application, the conductive fixed body is a metal column;

[0023] The conductive movable body is two spaced metal sheets connected by an insulating column, and the two metal sheets are suspended in the mounting cavity by elastic hangers, and a second through hole is provided on the metal sheet;

[0024] The metal column passes through the two second through holes on the two metal sheets, and there is a certain distance between the metal column and the inner wall surrounding the second through holes.

[0025] In some embodiments of the present application, the elastic hanger includes a first pull rope, a second pull rope and a spring, and the spring is arranged between the first pull rope and the second pull rope.

[0026] The present invention further provides a washing machine, comprising an outer tub and the safety switch as described above, wherein the safety switch is fixedly arranged on the outer wall of the outer tub.

[0027] In some embodiments of the present application, the installation position of the safety switch on the outer tub is opposite to any vertical corner of the washing machine body.

[0028] In some embodiments of the present application, the shell is detachably connected to the outer wall of the outer barrel.

[0029] Compared with the prior art, the advantages and positive effects of the present invention are:

[0030] The safety switch disclosed in the present application is arranged on the outer wall of the outer barrel, and the safety switch moves synchronously with the outer barrel. The conductive fixed body and the conductive movable body in the safety switch have two positional relationships: contact and separation. The conductive movable body has the possibility of contacting the conductive fixed body in any direction of movement to achieve contact and conduction between the two.

[0031] When the clothes are slightly eccentric and the swing amplitude of the outer barrel is small, the swing amplitude of the conductive movable body is also small. At this time, the conductive movable body and the conductive fixed body are separated and not in contact, and the safety switch will not be triggered, avoiding the problem of frequent triggering of the safety switch when the clothes are slightly eccentric in the prior art.

[0032] When the clothes are heavily eccentric and the outer barrel shakes with a large amplitude, the conductive movable body also shakes with a large amplitude. No matter which direction the outer barrel shakes, as long as the swing amplitude of the conductive movable body is greater than the preset value, the conductive movable body will contact the conductive fixed body. The conductive fixed body and the conductive movable body are connected to generate an electrical signal, triggering the safety switch, avoiding the problem in the prior art that the safety switch is not triggered when the clothes are heavily eccentric.

[0033] The action of the safety switch in the present invention is not affected by changes in the trajectory of the outer tub. It is a safety switch without a specific movement direction. No matter which direction the outer tub shakes, it can play a monitoring role, thereby improving the performance of the washing machine and the user experience.

[0034] Other features and advantages of the present invention will become more apparent after reading the detailed description of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0036] Figure 1This is a schematic diagram of the installation structure of a safety switch on a washing machine in the prior art;

[0037] Figure 2 Schematic diagram of the installation structure of the safety switch on the washing machine according to the embodiment Figure 1 ;

[0038] Figure 3 Schematic diagram of the installation structure of the safety switch on the washing machine according to the embodiment Figure 2 ;

[0039] Figure 4 is a schematic structural diagram of a safety switch according to an embodiment;

[0040] Figure 5 This is a schematic structural diagram of the safety switch according to the first embodiment with the outer housing omitted;

[0041] Figure 6 is a cross-sectional view of a safety switch according to embodiment 1;

[0042] Figure 7 is a cross-sectional view of a safety switch according to embodiment 2;

[0043] Figure 8 FIG. 4 is a cross-sectional view of a safety switch according to a third embodiment.

[0044] Reference numerals:

[0045] 100-cabinet;

[0046] 200-outer barrel;

[0047] 300-safety switch;

[0048] 310-conductive fixed body;

[0049] 320-conductive moving body;

[0050] 330-elastic pendant, 331-first pull rope, 332-second pull rope, 333-spring;

[0051] 340 - housing, 341 - first housing, 3411 - first mounting cavity, 342 - second housing, 3421 - second mounting cavity, 343 - third housing, 3431 - third mounting cavity, 344 - mounting column;

[0052] 350-insulation column;

[0053] 361 - metal sheet, 362 - metal ball, 363 - first through hole, 364 - second through hole, 365 - through hole, 366 - metal column. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0055] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0056] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0057] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0058] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0059] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0060] The pulsator washing machine includes a housing 100 and an outer tub 200 disposed in the housing 100. When the clothes are eccentric during the washing or dehydration process, the outer tub 200 will swing.

[0061] Reference Figure 2 and Figure 3 A safety switch 300 is installed on the outer wall of the outer barrel 200, and the safety switch 300 shakes synchronously with the outer barrel 200.

[0062] The safety switch 300 is a safety switch without a specific action direction.

[0063] Specifically, the safety switch 300 mainly includes a housing 340 , a conductive fixed body 310 and a conductive movable body 320 .

[0064] The housing 340 is a waterproof and closed structure, and a mounting cavity is formed inside the housing for mounting the conductive fixed body 310 and the conductive movable body 320 .

[0065] The conductive fixing body 310 is fixed in the installation cavity, and the position of the conductive fixing body 310 relative to the housing 340 is fixed.

[0066] The conductive movable body 320 is suspended in the installation cavity. When the safety switch 300 shakes synchronously with the outer barrel 200, the conductive movable body 320 also shakes in the installation cavity, and its position relative to the conductive fixed body 310 changes.

[0067] The purpose of the suspension arrangement is to achieve the shaking of the conductive movable body 320 , and the shaking amplitude is affected by the outer barrel.

[0068] There are two positional relationships between the conductive fixed body 310 and the conductive movable body 320: a contact state and a separation state.

[0069] The conductive movable body 320 has the possibility of contacting the conductive fixed body 310 in any movable direction, so as to achieve contact between the two.

[0070] That is, the conductive movable body 320 can touch the conductive fixed body 310 by moving a predetermined distance in any direction.

[0071] When the clothes are slightly eccentric and the swing amplitude of the outer barrel 200 is small, the swing amplitude of the conductive movable body 320 is also small. At this time, the conductive movable body 320 and the conductive fixed body 310 are separated and not in contact, and the safety switch 300 will not be triggered, avoiding the problem of frequent triggering of the safety switch when the clothes are slightly eccentric in the prior art.

[0072] When the clothes are heavily eccentric and the outer barrel 200 shakes with a large amplitude, the conductive movable body 320 also shakes with a large amplitude. No matter which direction the outer barrel 200 shakes, as long as the swing amplitude of the conductive movable body 320 is greater than the preset value, the conductive movable body 320 will contact the conductive fixed body 310. The conductive fixed body 310 and the conductive movable body 320 are connected to generate an electrical signal, triggering the safety switch 300, avoiding the problem in the prior art that the safety switch is not triggered when the clothes are heavily eccentric.

[0073] The operation of the safety switch 300 in the present invention is not affected by the change of the trajectory of the outer tub 200. No matter which direction the outer tub 200 shakes, it can play a monitoring role, thereby improving the performance of the washing machine and the user experience.

[0074] Regarding the specific structures of the conductive fixed body 310 and the conductive movable body 320 , and the relative arrangement structure therebetween, the present invention provides three embodiments, which are described in detail below.

[0075] Example 1

[0076] Reference Figures 4 to 6 The conductive fixing body 310 has two metal sheets 361 that are spaced apart from each other, and each metal sheet 361 is fixedly connected to the inner wall of the mounting cavity.

[0077] The metal sheet 361 is provided with a first through hole 363 , and the two first through holes 363 on the two metal sheets 361 face each other.

[0078] The conductive movable body 320 is located in the space surrounded by the two first through holes 363 , and there is a certain distance between the conductive movable body 320 and the inner walls surrounding the first through holes 363 .

[0079] When the clothing is slightly eccentric, the conductive movable body 320 swings with a small amplitude, and the conductive movable body 320 swings in the space surrounded by the two first through holes 363 without touching the inner wall of the first through holes 363 .

[0080] When the clothing is severely eccentric, the swing amplitude of the conductive movable body 320 increases, and the conductive movable body 320 can touch the inner wall of the first through hole 363 at the same time. In this way, the conductive movable body 320 and the two metal sheets 361 are connected to generate an electrical signal, and the safety switch is triggered.

[0081] As a specific embodiment, the conductive movable body 320 is a metal ball 362 .

[0082] The diameter of the metal ball 362 is smaller than the inner diameter of the first through hole 363 , so that the conductive movable body 320 and the conductive fixed body 310 are separated and the safety switch 300 is not triggered.

[0083] The diameter of the metal ball 362 is greater than the distance between the two metal sheets 361 , ensuring that when the swing amplitude of the metal ball 362 in any direction exceeds the set value, the metal ball 362 can contact the two metal sheets 361 at the same time, thereby achieving contact and conduction between the metal ball 362 and the two metal sheets 361 .

[0084] The specific values ​​of the diameter of the metal ball 362 , the inner diameter of the first through hole 363 , and the spacing between the two metal sheets 361 can be obtained through experimental testing according to the performance requirements of the washing machine, and are not specifically limited in this embodiment.

[0085] The conductive movable body 320 has a spherical structure and the first through hole 363 has a circular structure, so that the conductive movable body 320 has the same probability of contacting the inner wall of the first through hole 363 when moving in any direction, thereby improving the accuracy and reliability of triggering the safety switch 300.

[0086] In other embodiments, the conductive movable body 320 may also be a cylindrical body, a triangular prism, a diamond prism, a square prism, or the like.

[0087] The conductive fixing body 310 and the housing 340 may be fixed directly by bonding, which is convenient for production and processing.

[0088] Regarding the installation of the conductive movable body 320 in the installation cavity, in some embodiments of the present application, both sides of the conductive movable body 320 are suspended in the installation cavity via elastic hangers 330 .

[0089] The elastic hanging piece 330 not only realizes the installation of the conductive movable body 320 , but also allows the conductive movable body 320 to swing to a certain extent in the installation cavity.

[0090] Regarding the specific structure of the installation cavity, in some embodiments of the present application, the installation cavity includes a first installation cavity 3411 , a second installation cavity 3421 , and a third installation cavity 3431 that are connected to each other.

[0091] The two metal sheets 361 are fixedly connected to the inner wall of the second installation cavity 3421 .

[0092] One of the elastic hanging members 330 is disposed in the first installation cavity 3411 , and the other elastic hanging member 330 is disposed in the third installation cavity 3431 .

[0093] The inner diameter of the second installation cavity 3421 is larger than the inner diameters of the first installation cavity 3411 and the third installation cavity 3431 .

[0094] Regarding the specific structure of the elastic hanger 330 , in some embodiments of the present application, the elastic hanger 330 includes a first pull rope 331 , a second pull rope 332 and a spring 333 , and the spring 333 is disposed between the first pull rope 331 and the second pull rope 332 .

[0095] Taking the elastic hanger 330 in the first installation cavity 3411 as an example, one end of the first pull rope 331 is fixedly connected to the top wall of the first installation cavity 3411 , and one end of the second pull rope 332 is fixedly connected to the conductive movable body 320 .

[0096] The narrow and long first installation cavity 3411 and the third installation cavity 3431 also play a certain role in limiting and guiding the spring 330 .

[0097] Regarding the specific structure of the shell 340 , in some embodiments of the present application, the shell 340 adopts a three-section split structure, including a first shell 341 , a second shell 342 and a third shell 343 .

[0098] A first installation cavity 3411 is formed in the first housing 341 , and the bottom of the first installation cavity 3411 is open.

[0099] A second installation cavity 3421 is formed in the second housing 342 , and both ends of the second installation cavity 3421 are open.

[0100] A third installation cavity 3431 is formed in the third housing 343 , and the top of the third installation cavity 3431 is open.

[0101] The first shell 341 and the second shell 342 , and the second shell 342 and the third shell 343 are sealed and connected respectively so that the first installation cavity 3411 , the second installation cavity 3421 and the third installation cavity 3431 are vertically opposite and connected.

[0102] During production, first, the two conductive fixed bodies 310 are fixedly installed in the inner cavity of the second shell 342; one of the elastic hangers 330 is fixedly installed in the inner cavity of the first shell 341, and the other elastic hanger 330 is fixedly installed in the inner cavity of the third shell 343; the conductive movable body 320 is fixedly installed with one of the elastic hangers 330; the conductive movable body 320 is placed in the inner hole of the two metal sheets 361, and then the other side of the conductive movable body 320 is fixedly installed with the other elastic hanger 330; finally, the first shell 341 is fixedly installed with one side of the second shell 342, and the third shell 343 is fixedly installed with the other side of the second shell 342.

[0103] The entire safety switch 300 has a cylindrical structure in appearance, is small in size and has a compact internal structure.

[0104] The housing 340 and the outer tub 200 of the washing machine may be detachably connected to facilitate assembly and disassembly.

[0105] This embodiment does not impose any specific restrictions on the specific structure of the detachable installation, and a snap-fit ​​structure or a plug-in structure may be used.

[0106] Example 2

[0107] Reference Figure 7 The conductive fixed body 310 is a hollow cylindrical structure having a through hole 365 .

[0108] The conductive movable body 320 is two spaced metal sheets 361 , and the two metal sheets 361 are connected via an insulating column 350 .

[0109] The two metal sheets 361 are respectively suspended in the installation cavity by elastic hangers 330 , and the two metal sheets 361 are located in the through holes 365 of the conductive fixing body 310 .

[0110] When the outer barrel 200 shakes, the two metal sheets 361 shake synchronously in the through holes 365 .

[0111] There is a certain distance between the metal sheet 361 and the inner wall of the through hole 365 of the conductive fixed body 310 , so that the metal sheet 361 and the conductive fixed body 310 are separated and do not trigger the safety switch.

[0112] When the clothing is slightly eccentric, the two metal pieces 361 swing less, and the two metal pieces 361 swing in the through hole 365 of the conductive fixed body without touching the inner wall of the through hole 365. The two metal pieces 361 are separated from the conductive fixed body 310 and the safety switch is not triggered.

[0113] When the clothing is severely eccentric, the swing amplitude of the two metal sheets 361 increases, and the two metal sheets 361 can touch the inner wall of the through hole 365 at the same time. In this way, the conductive fixed body 310 and the two metal sheets 361 are connected to generate an electrical signal, and the safety switch 300 is triggered.

[0114] The height of the conductive fixed body 310 is greater than the height of the structure formed by the two metal sheets 361 , thereby ensuring the contact reliability between the metal sheets 361 and the conductive fixed body 310 .

[0115] The specific values ​​of the diameter of the metal sheet 361 and the inner diameter of the conductive fixed body 310 can be obtained through experimental testing according to the performance requirements of the washing machine, and are not specifically limited in this embodiment.

[0116] The conductive fixing body 310 and the housing 340 may be fixed directly by bonding, which is convenient for production and processing.

[0117] Regarding the installation of the conductive movable body 320 in the installation cavity, in some embodiments of the present application, both sides of the conductive movable body 320 are suspended in the installation cavity via elastic hangers 330 .

[0118] The elastic hanging piece 330 not only realizes the installation of the conductive movable body 320 , but also allows the conductive movable body 320 to swing to a certain extent in the installation cavity.

[0119] Regarding the specific structure of the installation cavity, in some embodiments of the present application, the installation cavity includes a first installation cavity 3411 , a second installation cavity 3421 , and a third installation cavity 3431 that are connected to each other.

[0120] The hollow cylindrical conductive fixing body 310 is fixedly connected to the inner wall of the second installation cavity 3421 .

[0121] One of the elastic hanging members 330 is disposed in the first installation cavity 3411 , and the other elastic hanging member 330 is disposed in the third installation cavity 3431 .

[0122] The inner diameter of the second installation cavity 3421 is larger than the inner diameters of the first installation cavity 3411 and the third installation cavity 3431 .

[0123] Regarding the specific structure of the elastic hanger 330 , in some embodiments of the present application, the elastic hanger 330 includes a first pull rope 331 , a second pull rope 332 and a spring 333 , and the spring 333 is disposed between the first pull rope 331 and the second pull rope 332 .

[0124] For the elastic hanger 330 in the first installation cavity 3411 , one end of the first pull rope 331 is fixedly connected to the top wall of the first installation cavity 3411 , and one end of the second pull rope 332 is fixedly connected to one of the metal sheets 361 .

[0125] For the elastic hanger 330 in the third installation cavity 3431 , one end of the first pull rope 331 is fixedly connected to the bottom wall of the third installation cavity 3431 , and one end of the second pull rope 332 is fixedly connected to another metal sheet 361 .

[0126] The narrow and long first installation cavity 3431 and the third installation cavity 3431 also play a certain role in limiting and guiding the spring 333 .

[0127] Regarding the specific structure of the shell 340 , in some embodiments of the present application, the shell 340 adopts a three-section split structure, including a first shell 341 , a second shell 342 and a third shell 343 .

[0128] A first installation cavity 3411 is formed in the first housing 341 , and the bottom of the first installation cavity 3411 is open.

[0129] A second installation cavity 3421 is formed in the second housing 342 , and both ends of the second installation cavity 3421 are open.

[0130] A third installation cavity 3431 is formed in the third housing 343 , and the top of the third installation cavity 3431 is open.

[0131] The first shell 341 and the second shell 342 , and the second shell 342 and the third shell 343 are sealed and connected respectively so that the first installation cavity 3411 , the second installation cavity 3421 and the third installation cavity 3431 are vertically opposite and connected.

[0132] During production, the hollow cylindrical conductive fixed body 310 is first fixedly installed in the inner cavity of the second shell 342; one of the elastic hangers 330 is fixedly installed in the inner cavity of the first shell 341, and the other elastic hanger 330 is fixedly installed in the inner cavity of the third shell 343; one of the metal sheets 361 in the conductive movable body 320 is fixedly installed with one of the elastic hangers 330; the conductive movable body 320 is placed in the internal through hole of the conductive fixed body 310, and then the other metal sheet 361 in the conductive movable body 320 is fixedly installed with the other elastic hanger 330; finally, the first shell 341 is fixedly installed with one side of the second shell 342, and the third shell 343 is fixedly installed with the other side of the second shell 342.

[0133] Example 3

[0134] Reference Figure 8 , the conductive fixed body 310 is a metal column 366 .

[0135] The conductive movable body 320 is two spaced metal sheets 361 , and the two metal sheets 361 are connected via an insulating column 350 .

[0136] The two metal sheets 361 are suspended in the installation cavity by elastic hangers 330 respectively. The metal sheets 361 are provided with second through holes 364. The metal columns 366 pass through the two second through holes 364 on the two metal sheets. There is a certain distance between the metal columns 366 and the inner wall surrounding the second through holes 364.

[0137] When the outer barrel 200 shakes, the two metal sheets 361 shake synchronously in the mounting cavity of the shell, while the metal pillars 366 remain stationary.

[0138] When the clothes are slightly eccentric, the two metal pieces 361 swing less, and the two metal pieces 361 do not touch the metal posts 366 . The two metal pieces 361 are separated from the metal posts 366 and the safety switch 300 is not triggered.

[0139] When the clothes are severely eccentric, the swing amplitude of the two metal pieces 361 increases, and the two metal pieces 361 can touch the metal pillars 366 at the same time. In this way, the metal pillars 366 and the two metal pieces 361 are connected to generate an electrical signal, and the safety switch is triggered.

[0140] The specific values ​​of the diameter of the metal sheet 361, the inner diameter of the second through hole 364, and the distance between the inner wall of the second through hole 364 and the metal column 366 can be obtained through experimental testing based on the performance requirements of the washing machine, and this embodiment does not impose any specific restrictions.

[0141] Regarding the fixation between the metal column 366 and the shell 340, in some embodiments of the present application, two opposing mounting columns 344 are provided in the shell 340, one end of the metal column 366 is fixedly mounted to one of the mounting columns 344, and the other end of the metal column 366 is fixedly mounted to the other mounting column 344.

[0142] Regarding the installation of the conductive movable body 320 in the installation cavity, in some embodiments of the present application, both sides of the conductive movable body 320 are suspended in the installation cavity via elastic hangers 330 .

[0143] The elastic hanging piece 330 not only realizes the installation of the conductive movable body, but also allows the conductive movable body 320 to swing to a certain extent in the installation cavity.

[0144] Regarding the specific structure of the elastic hanger 330 , in some embodiments of the present application, the elastic hanger 330 includes a first pull rope 331 , a second pull rope 332 and a spring 333 , and the spring 333 is disposed between the first pull rope 331 and the second pull rope 332 .

[0145] The housing 340 is a two-part split structure, including a first housing 341 and a second housing 342 . The first housing 341 and the second housing 342 both have hollow structures inside, and the two are connected to form a mounting cavity.

[0146] During production, the two metal sheets 361 in the conductive movable body 320 are first fixed together through the insulating column 350; multiple elastic hangers 330 are fixedly installed on the top wall of the inner cavity of the first shell 341, and multiple elastic hangers 330 are fixedly installed on the bottom wall of the inner cavity of the second shell 342; one of the metal sheets 361 in the conductive movable body 320 is fixedly installed with one of the elastic hangers 330, and the other metal sheet 361 is fixedly installed with the other elastic hanger 330; finally, the first shell 341 and the second shell 342 are docked and fixedly installed.

[0147] The safety switches 300 disclosed in the above embodiments are all fixed on the outer wall of the outer barrel 200 .

[0148] Since the box body 100 is a rectangular structure and the outer barrel 200 is a cylindrical structure, the gap between the four vertical corners of the box body 100 and the outer barrel 200 is relatively large. Therefore, the installation position of the safety switch 300 on the outer barrel 200 is set at any vertical corner facing the box body 100, providing a larger installation space for the safety switch 300 and facilitating disassembly and assembly operations.

[0149] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0150] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A washing machine comprising an outer tub, characterized in that: It also includes a safety switch, which is fixed on the outer wall of the outer barrel; The installation position of the safety switch on the outer tub is opposite to any vertical corner of the washing machine body; The safety switch comprises: a housing, forming a mounting cavity therein; a conductive fixed body, which is fixed in the installation cavity; A conductive movable body is suspended in the installation cavity, and two sides of the conductive movable body are respectively suspended in the installation cavity through elastic hangers; The conductive movable body can touch the conductive fixed body when it moves a preset distance in any direction, and the conductive fixed body and the conductive movable body are connected to generate an electrical signal.

2. The washing machine according to claim 1, wherein The conductive fixed body has two metal sheets arranged at intervals, and a first through hole is provided on the metal sheet. The two first through holes on the two metal sheets are opposite to each other. The conductive movable body is located in the space surrounded by the two first through holes, and there is a certain distance between the conductive movable body and the inner wall surrounding the first through holes.

3. The washing machine according to claim 2, characterized in that The conductive movable body is a metal ball, and the diameter of the metal ball is greater than the distance between the two metal sheets.

4. The washing machine according to claim 1, wherein The conductive fixed body is a hollow cylindrical structure with a through hole; The conductive movable body is two spaced-apart metal sheets, which are connected by an insulating column. The two metal sheets are suspended in the mounting cavity by elastic hangers respectively. The two metal sheets are located in the through-holes of the conductive fixed body. There is a certain distance between the metal sheets and the inner walls of the through-holes of the conductive fixed body. The height of the conductive fixed body is greater than the height of the structure formed by the two metal sheets.

5. The washing machine according to claim 1, wherein The conductive fixed body is a metal column; The conductive movable body is two spaced-apart metal sheets, which are connected by an insulating column. The two metal sheets are suspended in the installation cavity by elastic hangers respectively. A second through hole is provided on the metal sheet. The metal column passes through the two second through holes on the two metal sheets. There is a certain distance between the metal column and the inner wall surrounding the second through hole.

6. The washing machine according to any one of claims 3 to 5, characterized in that The elastic hanging component includes a first pull rope, a second pull rope and a spring, and the spring is arranged between the first pull rope and the second pull rope.

7. The washing machine according to any one of claims 1 to 5, characterized in that The shell is detachably connected to the outer wall of the outer barrel.

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