Liquid level switch installation structure, liquid level switch and electrical equipment

Abstract

This invention provides a liquid level switch mounting structure, a liquid level switch, and an electrical device, relating to the field of liquid level detection technology. It solves the technical problem of inconvenient installation of existing liquid level switches. The liquid level switch mounting structure includes a snap-fit ​​fixing structure and a connecting part disposed on the liquid level switch. The snap-fit ​​fixing structure includes a snap-fit ​​part and a mating part, one of which is disposed on the connecting part and the other on the bracket plate of the electrical device. After the connecting part is vertically moved towards the bracket plate and into position, the snap-fit ​​part and the mating part engage to secure the connecting part to the bracket plate. This invention enables rapid installation of the liquid level switch and the bracket plate.

Description

Technical Field

[0001] This invention relates to the field of liquid level detection technology, and in particular to a liquid level switch mounting structure, a liquid level switch, and electrical equipment. Background Technology

[0002] Liquid level switches are common components in household appliances. They are installed in the water storage compartment of the appliance to sense the water level in the storage compartment in real time and convert the water level into an electrical signal to feed back to the main control module. The main control module then controls the drain pump to start / stop and drain the water from the storage compartment.

[0003] During use, level switches need to be connected to a bracket on household appliances for support and fixation. Existing level switches, such as the one disclosed in patent CN102915873A, have a slot on the level switch, into which the bracket is inserted and then fixed with screws. This installation method requires additional screws and is inefficient.

[0004] In addition, the magnetic float on the level switch is located between the upper limit plate and the lower limit plate. The upper limit plate and the lower limit plate limit the range of the magnetic float's up and down movement. When the level switch is used, due to being immersed in water, there have been cases where the magnetic float has stuck to the upper limit plate or the lower limit plate, causing the level switch to malfunction. Summary of the Invention

[0005] The purpose of this invention is to provide a liquid level switch mounting structure, a liquid level switch, and an electrical device, solving the technical problem of inconvenient installation of existing liquid level switches. The numerous technical effects of the preferred solutions among the many technical solutions provided by this invention are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The present invention provides a liquid level switch mounting structure, including a snap-fit ​​fixing structure and a connecting part on the liquid level switch. The snap-fit ​​fixing structure includes a snap-fit ​​part and a mating part. One of the snap-fit ​​part and the mating part is disposed on the connecting part, and the other is disposed on the bracket plate of the electrical equipment. After the connecting part is vertically moved toward the bracket plate and moved into place, the connecting part can be snapped onto the bracket plate by the engagement of the snap-fit ​​part and the mating part.

[0008] Furthermore, the number of the snap-fit ​​fixing structures is one; or, the connecting part is connected to the bracket plate through two or more of the snap-fit ​​fixing structures.

[0009] Furthermore, the connecting part includes a fixing plate, which is connected to the main rod of the liquid level switch, and the fixing plate is provided with a snap-fit ​​part or a mating part of the snap-fit ​​fixing structure.

[0010] Furthermore, the snap-fit ​​fixing structure is an elastic snap-fit ​​structure, the mating part of the snap-fit ​​fixing structure is a snap-fit ​​hole, and the snap-fit ​​part of the snap-fit ​​fixing structure is an elastic snap.

[0011] Furthermore, the fixing plate has an upwardly protruding part, and a snap-fit ​​cavity is formed on the inner side of the protruding part. The elastic snap is located in the snap-fit ​​cavity and the bottom of the elastic snap protrudes from the snap-fit ​​cavity. When the fixing plate is snapped onto the bracket plate, the fixing plate is in contact with the bracket plate.

[0012] Furthermore, the elastic buckle includes a first elastic post and a second elastic post, the first elastic post and the second elastic post are arranged opposite each other and there is a gap between them, and a hook is provided on the free end of the first elastic post and the second elastic post, and the bracket plate can be clamped between the hook and the fixing plate.

[0013] Furthermore, the fixing plate is provided with a left side plate and a right side plate, which are located on both sides of the main rod. The inner side of the left side plate and the inner side of the right side plate respectively cooperate with the left side and right side of the bracket plate.

[0014] Furthermore, a limiting protrusion is provided on the inner side of the left side plate and / or the right side plate, and the bracket plate contacts the limiting protrusion to restrict the fixed plate from continuing to move vertically in the direction of the bracket plate.

[0015] Furthermore, the snap-fit ​​fixing structure is a snap-hook fixing structure, the snap-fit ​​part of the snap-hook fixing structure is an elastic snap-hook, the snap-fit ​​part of the snap-hook fixing structure is the two opposite ends of the bracket plate, the elastic snap-hook is provided on the left side plate and the right side plate, and the bracket plate can be connected to the fixing plate through the elastic snap-hook.

[0016] Furthermore, the fixing plate is provided with a positioning post, and the bracket plate is provided with a positioning hole, and the positioning post is inserted into the positioning hole.

[0017] Furthermore, a limiting post is provided on the lower surface of the fixing plate or the upper surface of the support plate, and the fixing plate is restricted from continuing to move vertically towards the support plate by contacting the limiting post.

[0018] Furthermore, a rear side plate is provided on the fixing plate, and a main rod avoidance notch is provided on the bracket plate, with the rear side plate cooperating with the corresponding side of the bracket plate.

[0019] A liquid level switch is fixed to the bracket plate of an electrical device by a liquid level switch mounting structure, and the liquid level switch is provided with a connecting part of the liquid level switch mounting structure.

[0020] Furthermore, the liquid level switch includes a magnetic float, an upper limit plate, and a lower limit plate, the upper limit plate and the lower limit plate being respectively disposed above and below the magnetic float; the upper limit plate has a protruding structure on the side facing the magnetic float to reduce the contact area between the magnetic float and the upper limit plate and / or the lower limit plate has a protruding structure on the side facing the magnetic float to reduce the contact area between the magnetic float and the lower limit plate.

[0021] An electrical device, including the aforementioned liquid level switch mounting structure.

[0022] This invention provides a liquid level switch mounting structure, including a connecting part and a snap-fit ​​fixing structure disposed on the liquid level switch. The snap-fit ​​fixing structure includes a snap-fit ​​part and a mating part, one of which is disposed on the connecting part and the other is disposed on the bracket plate of the electrical equipment. When the connecting part is moved vertically towards the bracket plate so that the snap-fit ​​part is connected to the mating part, the connecting part can be connected to the bracket plate, thereby realizing the rapid installation of the liquid level switch and the bracket plate. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a front view schematic diagram of the liquid level switch provided in an embodiment of the present invention;

[0025] Figure 2 yes Figure 1 A bottom view of the connecting section;

[0026] Figure 3 Is with Figure 1 A front view schematic diagram of the support plate that works in conjunction with the level switch;

[0027] Figure 4 This is a front view schematic diagram of the liquid level switch provided in an embodiment of the present invention;

[0028] Figure 5 yes Figure 4 A bottom view of the connecting section;

[0029] Figure 6 yes Figure 1 A magnified view of a section at point A in the middle;

[0030] Figure 7 This is a schematic diagram of the engagement hole and the elastic buckle provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the cooperation between the support plate and the connecting part provided in an embodiment of the present invention.

[0032] In the diagram: 1-Bracket plate; 2-Snap-fit ​​hole; 3-Elastic buckle; 301-First elastic post; 302-Second elastic post; 303-Hook; 4-Fixing plate; 5-Snap-fit ​​cavity; 6-Main rod; 7-Left side plate; 8-Right side plate; 9-Limiting protrusion; 10-Elastic hook; 11-Limiting post; 12-Rear side plate; 13-Main rod clearance notch; 14-Magnetic float; 15-Upper limit plate; 16-Lower limit plate; 17-Protruding structure; 18-Positioning post. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be described in detail below. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0034] This invention provides a liquid level switch mounting structure, including a snap-fit ​​fixing structure and a connecting part disposed on the liquid level switch. The snap-fit ​​fixing structure includes a snap-fit ​​part and a mating part, one of which is disposed on the connecting part and the other on a bracket plate 1 of the electrical equipment. After the connecting part is vertically moved towards the bracket plate 1 and into position, the snap-fit ​​part engages with the mating part to snap the connecting part onto the bracket plate 1. This enables rapid installation of the liquid level switch onto the bracket plate 1. Optionally, one snap-fit ​​fixing structure can be used; alternatively, the connecting part can be connected to the bracket plate 1 via two or more snap-fit ​​fixing structures. That is, an appropriate number of snap-fit ​​fixing structures can be set according to the operating conditions of the liquid level switch.

[0035] Example 1:

[0036] This invention provides a liquid level switch mounting structure, including a connecting part and a snap-fit ​​fixing structure disposed on the liquid level switch. The snap-fit ​​fixing structure includes a snap-fit ​​part and a mating part, one of which is disposed on the connecting part and the other is disposed on the bracket plate 1 of the electrical equipment. After the connecting part is moved vertically towards the bracket plate 1 and into position, the snap-fit ​​part and the mating part cooperate to achieve the connection part snapping onto the bracket plate 1, thereby realizing the quick installation of the liquid level switch and the bracket plate 1.

[0037] The snap-fit ​​fixing structure is a flexible snap-fit ​​structure. The mating part of the snap-fit ​​fixing structure is the snap-fit ​​hole 2, and the snap-fit ​​part of the snap-fit ​​fixing structure is the flexible snap 3. See also Figure 3 The diagram illustrates that the bracket plate 1 has snap-fit ​​holes 2, see [reference]. Figure 7 The diagram illustrates the mating relationship between the snap-fit ​​hole 2 and the elastic snap-fit ​​3. The connecting part is positioned above the support plate 1, and then moved vertically downwards so that the elastic snap-fit ​​3 on the connecting part inserts into the snap-fit ​​hole 2, thus connecting the level switch to the support plate 1. Alternatively, the elastic snap-fit ​​3 can also be provided on the support plate 1, and the snap-fit ​​hole 2 can be provided on the mounting part.

[0038] For the specific structure of the elastic buckle 3, please refer to [link / reference]. Figure 6 The elastic buckle 3 includes a first elastic post 301 and a second elastic post 302. The first elastic post 301 and the second elastic post 302 are arranged opposite each other and there is a gap between them. The connecting part includes a fixing plate 4. The fixing plate 4 is connected to the main rod 6 of the liquid level switch. One end of the first elastic post 301 and the second elastic post 302 are both connected to the fixing plate 4 of the connecting part. Hooks 303 are provided on the first elastic post 301 and the second elastic post 302. The bracket plate 1 can be clamped between the hooks 303 and the fixing plate 4. A first elastic post 301 and a second elastic post 302 are provided on the lower surface of the fixing plate 4. When the elastic post 301 and the second elastic post 302 are inserted into the snap-fit ​​hole 2 on the bracket plate 1, the first elastic post 301 and the second elastic post 302 elastically deform towards each other, causing the first elastic post 301 and the second elastic post 302 to insert into the snap-fit ​​hole 2. When the hook 303 passes through the snap-fit ​​hole 2, the first elastic post 301 and the second elastic post 302 return to their original position, and finally the bracket plate 1 is clamped between the hook 303 and the fixing plate 4. See [reference needed] Figure 7 Also see Figure 1 Alternatively, the elastic buckle 3 can be set on the upper surface of the fixing plate 4. During installation, the fixing plate 4 is placed below the bracket plate 1, and the fixing plate 4 is moved vertically upward so that the elastic buckle 3 is inserted into the buckle hole 2.

[0039] The fixed plate 4 is provided with a left side plate 7 and a right side plate 8, which are located on both sides of the main rod 6. The inner side of the left side plate 7 and the inner side of the right side plate 8 respectively cooperate with the left side and right side of the support plate 1 to guide the fixed plate 4 to be pushed vertically towards the support plate 1. Both the left side plate 7 and the right side plate 8 serve as limiters, and preferably both the left side plate 7 and the right side plate 8 are perpendicular to the fixed plate 4.

[0040] As an optional implementation, a limiting protrusion 9 is provided on the inner surface of the left side plate 7 and / or the right side plate 8. The bracket plate 1 contacts the limiting protrusion 9 to restrict the fixed plate 4 from continuing to move vertically in the direction of the bracket plate 1. See also Figure 6 This illustrates the limiting protrusion 9, which limits the fixing plate 4 to continue moving vertically towards the support plate 1. Alternatively, it can be as follows: See Figure 7 The fixing plate 4 has an upwardly protruding part, and a snap-fit ​​cavity 5 is formed on the inner side of the protruding part. The elastic snap 3 is located in the snap-fit ​​cavity 5, and the bottom of the elastic snap 3 protrudes from the snap-fit ​​cavity 5. When the fixing plate 4 is snapped onto the support plate 1, the fixing plate 4 contacts the support plate 1, and the contact between the fixing plate 4 and the support plate 1 restricts the fixing plate 4 from continuing to move vertically in the direction of the support plate 1. Alternatively, see Figure 8 A limiting post 11 is provided on the lower surface of the fixing plate 4 or the upper surface of the support plate 1. The fixing plate 4 is restricted from moving vertically towards the support plate 1 by contacting the limiting post 11 with the support plate 1.

[0041] As an optional implementation, the fixing plate 4 is provided with a rear side plate 12, and the support plate 1 is provided with a main rod clearance notch 13. When the fixing plate 4 is above the support plate 4, the main rod 6 is inserted into the main rod clearance notch 13, and the rear side plate 12 cooperates with the corresponding side of the support plate 1. See Figure 3 The rear side plate 12 mates with the side of the support plate 1 where the main rod clearance notch 13 is provided. The rear side plate 12 can be a single continuous elongated plate, or there can be two or more rear side plates 12 arranged on the rear side of the main rod 3. See also Figure 2 This shows the two rear side panels 12.

[0042] Example 2:

[0043] Unlike Example 1, see [link to Example 1] Figure 4 The connection structure is a snap-fit ​​fixing structure (i.e., the connecting part is connected to the support plate 1 through two snap-fit ​​fixing structures). The snap-fit ​​part of the snap-fit ​​fixing structure is an elastic snap hook 10, which is located at the two opposite ends of the support plate 1. The lower end surfaces of the left side plate 7 and the right side plate 8 are provided with elastic snap hooks 10, which are made of elastic material. See also Figure 6Move the fixing plate 4 above the support plate 1, and then move the fixing plate 4 vertically downward. During the movement of the fixing plate 4, the elastic hook 10 undergoes elastic deformation (at this time, the elastic buckle 3 will also be inserted into the snap hole 2). After the fixing plate 4 is moved into place, the left and right ends of the support plate 1 are supported on the elastic hook 10 respectively. At the same time, the support plate 1 is sandwiched between the hook 303 and the fixing plate 4.

[0044] In addition, when the elastic buckle 3 is set on the upper surface of the fixed plate 4, the left side plate 7 and the right side plate 8 need to protrude from the upper surface of the fixed plate 4, and the upper end surface of the left side plate 7 and the right side plate 8 is provided with elastic hooks 10, that is, the elastic hooks 10 are set above the fixed plate 4.

[0045] Example 3:

[0046] This invention provides a liquid level switch mounting structure, including a connecting part and a snap-fit ​​fixing structure disposed on the liquid level switch. The snap-fit ​​fixing structure includes a snap-fit ​​part and a mating part, one of which is disposed on the connecting part and the other is disposed on the bracket plate 1 of the electrical equipment. After the connecting part is moved vertically towards the bracket plate 1 and into position, the snap-fit ​​part and the mating part cooperate to achieve the connection part snapping onto the bracket plate 1, thereby realizing the quick installation of the liquid level switch and the bracket plate 1.

[0047] The connecting part includes a fixing plate 4, which is connected to the main rod 6 of the liquid level switch. The fixing plate 4 is provided with a snap-fit ​​or mating part of the snap-fit ​​fixing structure. The fixing plate 4 is provided with a left side plate 7 and a right side plate 8, which are located on both sides of the main rod 6. The inner side of the left side plate 7 and the inner side of the right side plate 8 respectively mate with the left side and right side of the bracket plate 1.

[0048] The fastening structure is a snap-fit ​​structure (the connecting part is connected to the support plate 1 through a snap-fit ​​structure). The snap-fit ​​part of the snap-fit ​​structure is an elastic snap hook 10, which is located at both opposite ends of the support plate 1. The lower end surfaces of the left side plate 7 and the right side plate 8 are provided with elastic snap hooks 10, which are made of elastic material. See also Figure 6 Move the fixing plate 4 above the support plate 1, and then move the fixing plate 4 vertically downward. During the movement of the fixing plate 4, the elastic hook 10 undergoes elastic deformation (at this time, the elastic buckle 3 will also be inserted into the snap hole 2). After the fixing plate 4 is moved into place, the left and right ends of the support plate 1 are supported on the elastic hook 10 respectively, and the support plate 1 is limited between the elastic hook 10 and the fixing plate 4.

[0049] Preferably, a positioning post 18 is provided on the fixing plate 4, and a positioning hole is provided on the bracket plate 1, into which the positioning post 18 is inserted. See also Figure 8The diagram illustrates the insertion of the positioning pin 18 into the positioning hole on the bracket plate 1. This positioning hole can be a snap-fit ​​hole 2. When the bracket plate 1 is positioned between the elastic hook 10 and the fixing plate 4, the positioning pin 18 engages with the positioning hole to restrict the horizontal movement of the connecting part.

[0050] Example 4:

[0051] A level switch is fixed to a bracket plate 1 of an electrical device using a level switch mounting structure as described in Embodiment 1, Embodiment 2, or Embodiment 3. The level switch has a connecting portion for the level switch mounting structure. (See also...) Figure 1 This illustrates a level switch with a connecting part, where the snap-fit ​​or mating part of the snap-fit ​​fixing structure is located on the connecting part.

[0052] As an optional implementation, the level switch includes a magnetic float 14, an upper limit plate 15, and a lower limit plate 16, with the upper limit plate 15 and lower limit plate 16 respectively positioned above and below the magnetic float 14. A protruding structure 17 is provided on the side of the upper limit plate 15 facing the magnetic float 14 to reduce the contact area between the magnetic float 14 and the upper limit plate 15, and / or a protruding structure 17 is provided on the side of the lower limit plate 16 facing the magnetic float 14 to reduce the contact area between the magnetic float 14 and the lower limit plate 16. During use, due to immersion in water, the magnetic float has sometimes adhered to the upper or lower limit plate, causing the level switch to malfunction. To minimize the adhesion of the magnetic float to the upper limit plate 15, a protruding structure 17 is provided on the side of the upper limit plate 15 facing the magnetic float 14, changing the surface contact between the upper limit plate 15 and the magnetic float 14 to a point contact, thus reducing the contact area between them. Similarly, to minimize the adhesion of the magnetic float to the lower limit plate 16, a protruding structure 17 is provided on the side of the lower limit plate 16 facing the magnetic float 14, changing the surface contact between the lower limit plate 16 and the magnetic float 14 to a point contact, thus reducing the contact area between them. The specific shape of the protruding structure 17 is not limited. Typically, the lower limit plate 16 is detachably connected to the main rod 6, allowing the installation / removal of the magnetic float 14 after removing the lower limit plate 16; the upper limit plate 15 can be integrally formed with the main rod 6.

[0053] Example 5:

[0054] An electrical device includes the liquid level switch mounting structure described in Embodiment 1, Embodiment 2, or Embodiment 3. The liquid level switch mounting structure includes a connecting portion and a snap-fit ​​fixing structure disposed on the liquid level switch. The snap-fit ​​fixing structure includes a snap-fit ​​portion and a mating portion, one of which is disposed on the connecting portion and the other on a bracket plate 1 of the electrical device. After the connecting portion is vertically moved towards the bracket plate 1 and into position, the snap-fit ​​portion engages with the mating portion to snap onto the bracket plate 1, enabling rapid installation of the liquid level switch and the bracket plate.

[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A liquid level switch mounting structure, characterized in that, This includes a snap-fit ​​fixing structure and a connecting part installed on the level switch, wherein, The snap-fit ​​fixing structure includes a snap-fit ​​part and a mating part. One of the snap-fit ​​part and the mating part is disposed on the connecting part and the other is disposed on the bracket plate (1) of the electrical equipment. After the connecting part is moved vertically towards the bracket plate (1) and into place, the connecting part can be snapped onto the bracket plate (1) by the cooperation of the snap-fit ​​part and the mating part. The connecting part includes a fixing plate (4), which is connected to the main rod (6) of the liquid level switch. The fixing plate (4) is provided with a snap-fit ​​part or a mating part of the snap-fit ​​fixing structure. The fixing plate (4) is provided with a left side plate (7) and a right side plate (8). The left side plate (7) and the right side plate (8) are located on both sides of the main rod (6). The inner side of the left side plate (7) and the inner side of the right side plate (8) respectively cooperate with the left side and the right side of the bracket plate (1). The snap-fit ​​fixing structure is a snap-hook fixing structure, and the snap-fit ​​part of the snap-hook fixing structure is an elastic snap-hook (10). The snap-fit ​​part of the snap-hook fixing structure is the two opposite ends of the bracket plate (1). The elastic snap-hook (10) is provided on the left side plate (7) and the right side plate (8). The bracket plate (1) can be limited between the elastic snap-hook (10) and the fixing plate (4).

2. The liquid level switch mounting structure according to claim 1, characterized in that, The number of the snap-fit ​​fixing structures is one; or, the connecting part is connected to the bracket plate (1) through two or more of the snap-fit ​​fixing structures.

3. The liquid level switch mounting structure according to claim 1, characterized in that, The snap-fit ​​fixing structure is an elastic snap-fit ​​structure, the mating part of the snap-fit ​​fixing structure is a snap-fit ​​hole (2), and the snap-fit ​​part of the snap-fit ​​fixing structure is an elastic snap (3).

4. The liquid level switch mounting structure according to claim 3, characterized in that, The fixing plate (4) has an upward protrusion, and a buckle receiving cavity (5) is formed on the inner side of the protrusion. The elastic buckle (3) is located in the buckle receiving cavity (5) and the bottom of the elastic buckle (3) protrudes from the buckle receiving cavity (5). When the fixing plate (4) is clamped on the bracket plate (1), the fixing plate (4) is in contact with the bracket plate (1).

5. The liquid level switch mounting structure according to claim 3, characterized in that, The elastic buckle (3) includes a first elastic post (301) and a second elastic post (302). The first elastic post (301) and the second elastic post (302) are arranged opposite each other and there is a gap between them. The free ends of the first elastic post (301) and the second elastic post (302) are provided with hooks (303). The bracket plate (1) can be clamped between the hooks (303) and the fixing plate (4).

6. The liquid level switch mounting structure according to claim 1, characterized in that, Limiting protrusions (9) are provided on the inner surfaces of the left side plate (7) and / or the right side plate (8), and the bracket plate (1) contacts the limiting protrusions (9) to restrict the fixed plate (4) from continuing to move vertically in the direction of the bracket plate (1).

7. The liquid level switch mounting structure according to claim 1, characterized in that, The fixing plate (4) is provided with a positioning post (18), and the bracket plate (1) is provided with a positioning hole, and the positioning post (18) is inserted into the positioning hole.

8. The liquid level switch mounting structure according to claim 1, characterized in that, A limiting post (11) is provided on the lower surface of the fixing plate (4) or the upper surface of the support plate (1). The limiting post (11) is in contact with the support plate (1) to restrict the fixing plate (4) from continuing to move vertically towards the support plate (1).

9. The liquid level switch mounting structure according to claim 1, characterized in that, The fixing plate (4) is provided with a rear side plate (12), and the bracket plate (1) is provided with a main rod avoidance notch (13). The rear side plate (12) cooperates with the corresponding side of the bracket plate (1).

10. A liquid level switch, characterized in that, The liquid level switch is fixed on the bracket plate (1) of the electrical equipment by the liquid level switch mounting structure according to any one of claims 1-9, and the liquid level switch is provided with the connecting part of the liquid level switch mounting structure.

11. The level switch according to claim 10, characterized in that, The liquid level switch includes a magnetic float (14), an upper limit plate (15) and a lower limit plate (16), with the upper limit plate (15) and the lower limit plate (16) respectively disposed above and below the magnetic float (14); The upper limit plate (15) has a protruding structure (17) on the side facing the magnetic float (14) to reduce the contact area between the magnetic float (14) and the upper limit plate (15) and / or the lower limit plate (16) has a protruding structure (17) on the side facing the magnetic float (14) to reduce the contact area between the magnetic float (14) and the lower limit plate (16).

12. An electrical appliance, characterized in that, The liquid level switch mounting structure includes any one of claims 1-9.

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