Safety switch of washing equipment and washing equipment

Abstract

The utility model discloses a safety switch of a washing device and the washing device, and the safety switch comprises a housing which is provided with a cavity; the pressing rod is hinged to the shell and provided with a first acting arm extending into the cavity and a pressing rod part matched with an upper cover of the washing equipment; the sinker bar is hinged to the shell and provided with a second acting arm extending into the cavity and a sinker bar part matched with an outer barrel of the washing equipment; and the first acting arm and the second acting arm are arranged at an interval in the left-right direction. The first acting arm and the second acting arm are arranged at an interval in the left-right direction, so that the size of the safety switch in the front-back direction is shortened, a large space in the front-back direction does not need to be reserved for installing the safety switch, and the internal structure of the washing machine is more compact in the front-back direction. As the occupied space of the safety switch is reduced, the layout of other electric parts in a control panel seat device cavity is optimized, and the compactness of the whole structure of the washing machine is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of safety switch technology, specifically relating to a safety switch for a washing machine and a washing machine having the safety switch. Background Technology

[0002] During operation, if a top-loading washing machine encounters situations such as the lid opening mid-cycle or the drum colliding, it needs to be able to stop immediately to avoid safety hazards caused by the lid opening and damage from the drum collision. Equipping the washing machine with a safety switch can promptly prevent these safety hazards and damage, thus improving the washing machine's safe operation.

[0003] Patent 201120068649.9 discloses a washing machine safety switch, including a base box, a top-opening rod, a striker, a switch spring, and a switch cover. The top-opening rod and the striker are pivotally connected to the lower end of the base box and each has a passive end. The passive ends of the top-opening rod and the striker are movably disposed in the top-opening rod opening and the striker opening at the bottom of the base box, respectively. The switch spring is disposed inside the base box. The top-opening rod and the striker are arranged opposite each other in the front-back direction, with the top-opening rod located in front of the striker, and the striker extending into the outer side of the outer tub. In practical applications, the safety switch is installed in the device cavity of the control panel. Because the top-opening rod and the striker are arranged opposite each other in the front-back direction, they need to avoid each other, resulting in a larger size of the safety switch in the front-back direction. This requires ensuring sufficient distance between the device cavity where the safety switch is installed in the front-back direction, which is detrimental to the pursuit of a compact structure and increased volume ratio in washing machine products.

[0004] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0005] This invention addresses the aforementioned problems in the prior art by proposing a safety switch for a washing device, resulting in a compact structure and improved space utilization.

[0006] To achieve the above-mentioned objectives, the present invention employs the following technical solution:

[0007] A safety switch for a washing machine includes:

[0008] A shell having a cavity;

[0009] A pressure rod, which is hinged to the housing, has a first working arm that extends into the cavity and a pressure rod portion that cooperates with the upper cover of the washing device;

[0010] A striker rod is hinged on the shell and has a second acting arm extending into the cavity and a striker rod part matched with an outer tub of the washing device;

[0011] The first acting arm and the second acting arm are arranged in a left-right direction.

[0012] In some embodiments of the present application, the pressing rod part and the striker rod part are arranged in a left-right direction.

[0013] In some embodiments of the present application, a first hinge seat extending forward and used for mounting the pressing rod is arranged on the shell, and a second hinge seat extending downward and used for mounting the striker rod is arranged on the shell.

[0014] In some embodiments of the present application, in a left-right direction, the first hinge seat is arranged on the shell away from a side of a center of a control disc seat, and the second hinge seat is arranged on the shell close to the side of the center of the control disc seat.

[0015] In some embodiments of the present application, the first hinge seat has a first front seat plate and a second front seat plate arranged in parallel, the second hinge seat has a first lower seat plate and a second lower seat plate arranged in parallel, the second front seat plate and the first lower seat plate are arranged in parallel, and a plane where the second front seat plate is located is between the first lower seat plate and the second lower seat plate.

[0016] In some embodiments of the present application, a first avoiding opening for the first acting arm to extend into the cavity is arranged on a front wall of the shell, and a second avoiding opening for the second acting arm to extend into the cavity is arranged on a bottom of the shell.

[0017] In some embodiments of the present application, a limiting plate for limiting the movement of the pressing rod part is arranged on the first hinge seat, the limiting plate is connected to front ends of the first front seat plate and the second front seat plate, and a limiting notch matched with the limiting plate is arranged on the pressing rod part.

[0018] In some embodiments of the present application, the pressing rod part has an upper extending part extending upward and a front extending part extending forward along an upper end of the upper extending part, and the limiting notch is arranged on a front side of the upper extending part.

[0019] In some embodiments of the present application, the pressing rod has a first hinge part hinged with the shell, the striker rod has a second hinge part hinged with the shell, and a first hinge shaft of the first hinge part is arranged in parallel with a second hinge shaft of the second hinge part.

[0020] In some embodiments of the present application, a first hinge seat extending forward and used for mounting the first hinge part is arranged on the shell, and a torsion spring used for resetting the pressing rod is arranged on the first hinge shaft.

[0021] In some embodiments of the present application, a second hinge seat extending downward and used for mounting the second hinge part is arranged on the shell, a lower mounting plate extending backward is arranged on the second hinge part, an upper mounting plate extending backward is arranged on the shell, and a spring used for pushing the pressing rod to reset is arranged between the upper mounting plate and the lower mounting plate.

[0022] In some embodiments of the present application, first and second elastic sheets arranged in an up-down manner are further arranged in the cavity, the first acting arm abuts against the first elastic sheet, and the second acting arm abuts against the second elastic sheet.

[0023] In some embodiments of the present application, a shell cover arranged on the shell and an adjusting rod arranged on the shell cover and capable of being adjusted in an up-down manner are further included, the adjusting rod is arranged above the second elastic sheet, and the second acting arm abuts against the lower side of the second elastic sheet.

[0024] Based on the safety switch of the washing equipment, the utility model further provides a washing equipment with the safety switch, so that the structure is compact, and the space utilization is improved.

[0025] A washing equipment has a box body, a control disc seat arranged on the top of the box body, an upper cover hingedly arranged on the control disc seat, and an outer drum hung in the box body, and the safety switch is arranged on the control disc seat.

[0026] In some embodiments of the present application, the safety switch is arranged at the left corner or the right corner of the rear part of the control disc seat.

[0027] Compared with the prior art, the utility model has the advantages and positive effects that: one, first acting arm and second acting arm are arranged in the left and right direction interval, make the size of safety switch shorten in front and back direction, need no longer reserve larger front and back direction space to install safety switch, make the inside structure of washing machine is more compact in front and back direction. Two, the reduction of safety switch space occupation is favorable to the optimization control disc seat device cavity other electrical device layout, further improve the compactness of washing machine whole structure. Three, the effective volume rate of washing machine inside space is improved, make in not increase washing machine whole volume condition, can accommodate more and more function related parts or provide more function option. Four, the press bar portion and the ram are staggered in the left and right direction, avoid the interference between them. In the washing machine operation process, the opening and closing action of the upper cover is transmitted by the press bar, the state change of the outer barrel is fed back by the ram, and the safety switch can work more accurately.

[0028] Other features and advantages of the present application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiments will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0030] Figure 1 The structure schematic diagram of one embodiment of the safety switch of the washing equipment proposed in the utility model is shown in the figure.

[0031] Figure 2 The structure schematic diagram of one embodiment of the safety switch of the washing equipment proposed in the utility model is shown in the figure. Figure 1

[0032] Figure 3 The structure schematic diagram of one embodiment of the safety switch of the washing equipment proposed in the utility model is shown in the figure. Figure 1

[0033] Figure 4 The structure schematic diagram of one embodiment of the safety switch of the washing equipment proposed in the utility model is shown in the figure. Figure 3

[0034] Figure 5 The structure schematic diagram of one embodiment of the safety switch of the washing equipment proposed in the utility model is shown in the figure.

[0035] Figure 6 The structure schematic diagram of one embodiment of the safety switch of the washing equipment proposed in the utility model is shown in the figure. Figure 5

[0036] Figure 7 The structure schematic diagram of one embodiment of the safety switch of the washing equipment proposed in the utility model is shown in the figure. Figure 5 ​​​​​

[0037] Figure 8 For Figure 7 Enlarged structural diagram of middle B area;

[0038] Figure 9 For Figure 5 Structural diagram after removing the shell;

[0039] Figure 10 Structural diagram of the shell;

[0040] Figure 11 Structural diagram of the pressing rod;

[0041] Figure 12 Structural diagram of the impact rod;

[0042] Wherein, the safety switch 100;

[0043] The shell 10; the cavity 11; the first avoiding port 111; the second avoiding port 112; the upper mounting plate 12; the first hinged seat 13; the first front seat plate 131; the second front seat plate 132; the limiting plate 133; the second hinged seat 14; the first lower seat plate 141; the second lower seat plate 142; the shell cover 19;

[0044] The pressing rod 20; the pressing rod part 21; the limiting notch 211; the upper extension part 215; the front extension part 216; the first hinged part 22, the first intersection shaft 224; the first action arm 23; the torsional spring 29;

[0045] The impact rod 30; the impact rod part 31; the second hinged part 32; the lower mounting plate 323; the second hinged shaft 324; the second action arm 33; the spring 39;

[0046] The first elastic sheet 41; the second elastic sheet 42;

[0047] The adjusting rod 50;

[0048] The control disc seat 200. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below by combining with the drawings in the embodiments of the utility model.

[0050] In the description of the utility model, it is necessary to explain that the terms "upper", "lower", "left", "right", "front", "back" are relative to the position of the user in the normal use state of the washing equipment. The terms are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0051] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0052] In the utility model, unless otherwise specifically defined and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0053] The following disclosure provides many different embodiments or examples for implementing different structures of the utility model. In order to simplify the disclosure of the utility model, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the utility model. In addition, the utility model can repeatedly refer to numbers and / or letters in different examples, and such repetition is for the purpose of simplification and clarity, which itself does not indicate the relationship between the various embodiments and / or settings discussed. In addition, the utility model provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0054] To the extent possible, the various aspects and features described and illustrated herein can be used separately, and the separate aspects can be the subject of separate applications for patent.

[0055] Referring to Figures 1-12 It is an embodiment of the safety switch 100 of the washing equipment provided by the utility model, and the safety switch 100 of the washing equipment comprises a shell 10, a pressing rod 20 and a striking rod 30. The shell 10 has a cavity 11, and the shell 10 is fixed in the control disc seat 200 of the washing equipment. The washing equipment can be a washing machine, a shoe washing machine or other washing equipment.

[0056] In the embodiment, the pressing rod 20 and the striking rod 30 are both hinged to the shell 10, and the pressing rod 20 and the striking rod 30 are arranged in the left-right direction. Specifically, the pressing rod 20 has a first acting arm 23 extending into the cavity 11 and a pressing rod part 21 matched with the upper cover of the washing equipment, and the striking rod 30 has a second acting arm 33 extending into the cavity 11 and a striking rod part 31 matched with the outer barrel of the washing equipment. The first acting arm 23 and the second acting arm 33 are arranged in the left-right direction, so that the projections of the first acting arm 23 and the second acting arm 33 in the left-right direction can partially overlap, so that the size of the safety switch 100 in the front-back direction is shortened, and a larger space in the front-back direction does not need to be reserved for installing the safety switch 100, so that the internal structure of the washing machine is more compact in the front-back direction. The reduction of the space occupied by the safety switch 100 is beneficial to optimizing the layout of other electrical devices in the control disc seat device cavity, and further improves the compactness of the overall structure of the washing machine. The effective volume rate of the internal space of the washing machine is improved, so that more components related to the washing function or more function options can be accommodated without increasing the overall volume of the washing machine. The pressing rod part 21 and the striking rod part 31 are arranged in the left-right direction, so as to avoid interference between the two, which is beneficial to further reducing the size of the safety switch 100 in the front-back direction. During the operation of the washing machine, the opening and closing action of the upper cover transmits a signal through the pressing rod 20, and the state change of the outer barrel feeds back a signal through the striking rod 30, so that the safety switch can work more accurately.

[0057] In some embodiments of the application, a first hinged seat 13 extending forward and used for installing the pressing rod 20 is arranged on the shell 10, and a second hinged seat 14 extending downward and used for installing the striking rod 30 is arranged on the shell 10. By arranging the first hinged seat 13 to extend forward and the second hinged seat 14 to extend downward, the pressing rod 20 and the striking rod 30 are arranged in the left-right direction, the pressing rod part 21 is arranged to extend forward and work with the upper cover, and the striking rod part 31 is arranged to extend downward and work with the outer barrel.

[0058] In some embodiments of the present application, in the left-right direction, the first hinge seat 13 is located on the side of the shell 10 far from the center of the control disc seat, and the second hinge seat 14 is located on the side of the shell 10 close to the center of the control disc seat. The first hinge seat 13 on the side of the shell 10 far from the center of the control disc seat can be arranged at the corner of the device cavity, that is, the corner where the rear part and the side part of the device cavity are connected, so as to make full use of the corner space of the device cavity, so that the front end of the pressing rod part 21 is located on the side part, so that the size of the rear part of the device cavity can be further reduced, so that the internal structure of the washing machine is more compact in the front-rear direction; without increasing the overall volume of the washing machine, the effective volume rate of the internal space is improved.

[0059] In some embodiments of the present application, the first hinge seat 13 has a first front seat plate 131 and a second front seat plate 132 arranged in parallel, and the second hinge seat 14 has a first lower seat plate 141 and a second lower seat plate 142 arranged in parallel, the second front seat plate 132 and the first lower seat plate 141 are arranged in parallel, and the plane where the second front seat plate 132 is located is between the first lower seat plate 141 and the second lower seat plate 142. The first front seat plate 131 and the second front seat plate 114 of the first hinge seat 13 are arranged in parallel to provide a more stable mounting basis for the pressing rod 20. The first lower seat plate 141 and the second lower seat plate 142 of the second hinge seat 14 are arranged in parallel, which also enhances the mounting stability of the impact rod 30. When the pressing rod 20 and the impact rod 30 are subjected to external force during work, this parallel plate structure can better disperse the pressure and prevent the hinge seat from deforming, thereby ensuring the normal work of the safety switch 100. The plane where the second front seat plate 132 is located is between the first lower seat plate 141 and the second lower seat plate 142, which is conducive to the compact structure of the first hinge seat 13 and the second hinge seat 14.

[0060] In some embodiments of the present application, the safety switch 100 further comprises a first elastic sheet 41 and a second elastic sheet 42 arranged in parallel in the cavity 11; the first acting arm 23 abuts against the first elastic sheet 41, and the second acting arm 23 abuts against the second elastic sheet 42, and the first elastic sheet 41 is located on the upper side of the second elastic sheet 42.

[0061] In some embodiments of the present application, a first avoiding opening 111 is formed on the front wall of the shell 10 for the first acting arm 23 to extend into the cavity 11; a second avoiding opening 112 is formed on the bottom of the shell 10 for the second acting arm 33 to extend into the cavity 11.

[0062] In some embodiments of the present application, a limiting plate 133 is arranged on the first hinge seat 13 to limit the movement of the pressing rod part 21 to a position, the limiting plate 133 is connected to the front ends of the first front seat plate 131 and the second front seat plate 132, and a limiting notch 211 is arranged on the pressing rod part 21 to match the limiting plate 133. The cooperation of the limiting plate 133 and the limiting notch 211 can accurately limit the movement position of the pressing rod part 21, and when the pressing rod 20 moves with the opening and closing of the cover of the washing device, the limiting plate 133 can accurately move the pressing rod part 21 to a predetermined position.

[0063] In some embodiments of the present application, the pressing rod part 21 has an upward extending part 215 and a forward extending part 216 extending forward along the upper end of the upward extending part 215, and the limiting notch 211 is arranged on the front side of the upward extending part 216. The limiting notch 211 is arranged on the front side of the upward extending part 216, which can realize more accurate limiting effect in cooperation with the limiting plate 133; the design of the upward extending part 215 and the forward extending part 216 extending forward makes the limiting notch 211 in a specific spatial position, which can accurately limit the final movement position of the pressing rod part 21 from multiple directions in cooperation with the limiting plate 133. The design of the upward extending part 215 and the forward extending part 216 can make full use of the space in front of and above the shell 10, avoid occupying too much space in the horizontal direction, and make the safety switch 100 more reasonable in the limited control panel seat device cavity.

[0064] In some embodiments of the present application, the pressing rod 20 has a first articulation 22 articulated with the shell 10, the impact rod 30 has a second articulation 32 articulated with the shell 10, and the first articulation axis 224 of the first articulation 22 is arranged in parallel with the second articulation axis 324 of the second articulation 32. The parallel arrangement of the first articulation axis 224 and the second articulation axis 324 enables the rotating movement of the pressing rod 20 and the impact rod 30 on the shell 10 to be well coordinated, and the pressing rod portion 21 and the impact rod portion 31 are arranged staggered so as not to interfere with each other during swinging. Whether the opening and closing movement of the upper cover drives the movement of the pressing rod 20 or the state change of the outer barrel drives the movement of the impact rod 30, the rotating direction and trajectory of each around the axis are matched and stable. This parallel arrangement helps to more reasonably arrange the layout of the pressing rod 20 and the impact rod 30 in the limited space of the shell 10. Because the two axes are parallel, when designing the safety switch 100, the installation position, size and movement range of the pressing rod 20 and the impact rod 30 can be accurately planned according to their parallel relationship, avoiding the situation that the components conflict with each other in space or need to reserve too much extra space due to the angle problem of the articulation axis; the space occupied by the safety switch 100 in the front-back, left-right and other directions can be effectively reduced, so that the structure of the entire safety switch 100 is more compact, thereby optimizing the space utilization in the control disc seat device cavity and providing more layout space for other electrical elements, and improving the compactness of the overall internal structure.

[0065] In some embodiments of the present application, a torsion spring 29 for resetting the pressing rod 20 is sleeved on the first articulation axis 224. The torsion spring 29 is sleeved on the first articulation axis 224 and can provide a resetting elastic force for the pressing rod 20, and the resetting action of the torsion spring 29 helps to improve the accuracy of signal transmission of the safety switch 100. Because the torsion spring 29 can reset the pressing rod 20 in time, the position of the first action arm 23 of the pressing rod 20 in the cavity 11 can also return to the initial state.

[0066] In some embodiments of the present application, a rearwardly extending lower mounting plate 323 is arranged at the second hinge 32, a rearwardly extending upper mounting plate 12 is arranged on the housing 10, and a spring 39 for pushing the striker 30 back is arranged between the upper mounting plate 12 and the lower mounting plate 323. The spring 39 is installed between the upper mounting plate 12 and the lower mounting plate 323 and can provide the striker 30 with the elastic force required for resetting. Since the striker 30 can be reset in time under the action of the spring 39, the position of the second action arm 33 of the striker 30 in the cavity 11 also returns to the initial state, which helps to improve the accuracy of the signal feedback of the safety switch 100. The rearwardly extending design of the upper mounting plate 12 and the lower mounting plate 323 is conducive to reasonably utilizing the space at the rear of the housing 10 to install the spring 39, which helps to maintain the compactness of the safety switch 100 structure and further optimizes the spatial layout in the device cavity of the washing equipment control panel holder.

[0067] In some embodiments of the present application, the safety switch 100 further comprises a cover 19 arranged on the housing 10 and an adjustable adjusting rod 50 arranged on the cover 19 and adjustable up and down, the adjusting rod 50 being above the second spring 42, and the second action arm 42 abutting against the lower side of the second spring 42. The adjusting rod 50 is adjustable up and down and located above the second spring 42, so that the force transmitted by the striker 30 to the second spring 42 can be accurately adjusted according to actual needs. The up and down movement of the adjusting rod 50 can adjust the distance between the adjusting rod 50 and the second spring 42, which can affect the pressure applied by the second action arm 33 to the second spring 42 and the relative positional relationship between the adjusting rod 50 and the second action arm 33, so that the requirements of the switch triggering force may differ. By moving the adjusting rod 50 up and down, the sensitivity of the striker 30 triggering the safety switch is adjusted, so that the safety switch 100 can better adapt to different use scenarios and equipment requirements and ensure the accuracy of its monitoring of the state change of the outer barrel. The up and down adjustment function of the adjusting rod 50 can assist in optimizing the cooperation between the second spring 42 and the second action arm 33, so that when the striker 30 moves due to the state change of the outer barrel, it can more stably and accurately transmit signals through the second spring 42. The cover 19 provides a reasonable mounting position for the adjusting rod 50, so that the adjusting rod 50 can be adjusted in the appropriate spatial position above the second spring 42.

[0068] The foregoing embodiments are merely used to illustrate the technical solutions of the present application, but not to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, for those ordinarily skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced equivalently; and the modifications or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions claimed by the present application.

Claims

1. A safety switch for a washing apparatus, characterized by, The safety switch comprises: a housing having a cavity; a pressing rod hingedly connected to the housing, having a first action arm extending into the cavity, and a pressing rod part matched with an upper cover of the washing machine; a striking rod hingedly connected to the housing, having a second action arm extending into the cavity, and a striking rod part matched with an outer drum of the washing machine; the first action arm and the second action arm are arranged in a left-right direction.

2. The safety switch of claim 1, wherein, a first hinged seat extending forward on the housing and used for mounting the pressing rod, and a second hinged seat extending downward on the housing and used for mounting the striking rod.

3. The safety switch of claim 2, wherein, in the left-right direction, the first hinged seat is located on one side of the housing away from the center of the control panel seat, and the second hinged seat is located on one side of the housing close to the center of the control panel seat.

4. The safety switch of claim 2, wherein, the first hinged seat has a first front seat plate and a second front seat plate arranged in parallel, the second hinged seat has a first lower seat plate and a second lower seat plate arranged in parallel, the second front seat plate and the first lower seat plate are arranged in parallel, and a plane where the second front seat plate is located is between the first lower seat plate and the second lower seat plate.

5. The safety switch of claim 4, wherein, a limiting plate for limiting the movement of the pressing rod part is arranged on the first hinged seat, the limiting plate is connected to the front ends of the first front seat plate and the second front seat plate, and a limiting notch matched with the limiting plate is arranged on the pressing rod part.

6. The safety switch of claim 5, wherein, the pressing rod part has an upward extending upper extension part and a forward extending front extension part along the upper end of the upper extension part, and the limiting notch is arranged on the front side of the upper extension part.

7. Safety switch according to any of claims 1 to 6, characterized in that the pressing rod has a first hinged part hingedly connected to the housing, the striking rod has a second hinged part hingedly connected to the housing, a first intersection shaft of the first hinged part is arranged in parallel with a second hinged shaft of the second hinged part, a first hinged seat extending forward on the housing is used for mounting the first hinged part, and a torsion spring for resetting the pressing rod is sleeved on the first intersection shaft.

8. Safety switch according to any of claims 1 to 6, characterized in that first and second elastic sheets arranged in an up-down direction in the cavity, the first action arm abuts against the first elastic sheet, and the second action arm abuts against the second elastic sheet; a housing cover arranged on the housing, and an adjusting rod arranged on the housing cover and adjustable in an up-down direction, the adjusting rod is located above the second elastic sheet, and the second action arm abuts against the lower side of the second elastic sheet.

9. The safety switch of claim 7, wherein, a second hinged seat extending downward on the housing, a lower mounting plate extending rearward on the second hinged part, an upper mounting plate extending rearward on the housing, and a spring for pushing the striking rod to reset arranged between the upper mounting plate and the lower mounting plate.

10. A washing apparatus characterized by comprising: a box body, a control panel seat arranged on the top of the box body, an upper cover hingedly arranged on the control panel seat, and an outer drum suspended in the box body, and the safety switch according to any one of claims 1 to 9 is arranged on the control panel seat.

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