Liquid level switch and water tank

Abstract

The application relates to a liquid level switch and a water tank, and relates to the technical field of liquid level switches. The liquid level switch comprises a main body and a buckle, the buckle is arranged at the upper end of the main body along the gravity direction, the buckle comprises a mounting portion and at least one elastic portion; the mounting portion is fixed with the main body, the upper end of the elastic portion is connected with the mounting portion along the gravity direction, and the lower end of the elastic portion is opened along the direction away from the main body; the elastic portion is configured to be capable of approaching the main body under the pressing of external force. The application is convenient to operate, and the installation efficiency of the liquid level switch is effectively improved.

Description

Technical Field

[0001] This application relates to the field of liquid level switch technology, and in particular to a liquid level switch and a water tank. Background Technology

[0002] Liquid level switches are widely used in various liquid containers to detect liquid level and achieve automatic control. In related technologies, liquid level switches are typically fixed to the side wall of a tank or container using fasteners such as nuts or flanges. This assembly method requires tightening with tools such as wrenches, making the operation complex and inefficient. Utility Model Content

[0003] Therefore, it is necessary to provide a liquid level switch and water tank to address the problems of complex installation and operation and low efficiency of liquid level switches.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0005] In a first aspect, embodiments of this application provide a liquid level switch, including:

[0006] main body;

[0007] A buckle is disposed at the upper end of the main body along the direction of gravity, and the buckle includes a mounting part and an elastic part;

[0008] The mounting part is fixedly connected to the main body. Along the direction of gravity, the upper end of the elastic part is connected to the mounting part, and the lower end extends away from the main body. The lower end of the elastic part is configured to move towards the main body under external pressure.

[0009] In one embodiment of the first aspect, a groove is provided at the position corresponding to the elastic part of the mounting part, and the elastic part can be pressed into the groove.

[0010] In one embodiment of the first aspect, the liquid level switch further includes a sensing element and a trigger, the trigger being slidably disposed on the body and configured to move under the buoyancy of the liquid, the sensing element being fixed to the end of the body away from the latch.

[0011] In one embodiment of the first aspect, the main body is provided with limiting members at both ends, and the trigger member is restricted between the two limiting members.

[0012] In one embodiment of the first aspect, the level switch further includes a lead wire, one end of which is connected to the sensing element and the other end of which is connected to an external power source.

[0013] In one embodiment of the first aspect, the sensing element and the end of the lead connected to the sensing element are both encapsulated within the body.

[0014] In one embodiment of the first aspect, the level switch further includes a seal disposed at the connection between the snap and the body.

[0015] In one embodiment of the first aspect, the upper and lower surfaces of the seal are provided with protrusions along the direction of gravity, and the protrusions are in the shape of rings.

[0016] In one embodiment of the first aspect, the end of the body connected to the buckle is provided with an installation block, and the side of the installation block near the seal is provided with an annular groove, and the protrusion located on the lower surface of the seal is fitted into the annular groove.

[0017] Secondly, this application also provides a water tank, including the liquid level switch and tank body described in any of the above embodiments, wherein the tank body is provided with a mounting hole, the mounting part passes through the mounting hole, and the elastic part abuts against the outside of the mounting hole.

[0018] Compared to related technologies, the advantages of this application are as follows: This application provides a liquid level switch and a water tank. The liquid level switch includes a body and a snap-fit. The snap-fit ​​includes a mounting portion and an elastic portion that opens relative to the mounting portion. Thus, during the installation of the liquid level switch, it is only necessary to press and close the elastic portion, pass it through the mounting hole of the water tank, and then the elastic portion returns to its original position, allowing the liquid level switch to be assembled onto the tank body. This convenient operation effectively improves the installation efficiency of the liquid level switch. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application 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 this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the assembly structure of a liquid level switch in related technologies;

[0021] Figure 2 This is a schematic diagram of the structure of the level switch in some embodiments of this application. Figure 1 ;

[0022] Figure 3 for Figure 1 The diagram shows an enlarged view of part A.

[0023] Figure 4This is a schematic diagram of the structure of the level switch in some embodiments of this application. Figure 2 ;

[0024] Figure 5 Schematic diagrams of the water tank in some embodiments of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Liquid container; 2. Switch body; 3. Nut;

[0027] 1000, water tank;

[0028] 100. Liquid level switch; 110. Body; 120. Snap-fit; 121. Mounting part; 1211. Groove; 122. Elastic part; 130. Switch assembly; 131. Sensing element; 132. Trigger; 140. Limiting element; 150. Lead wire; 160. Seal; 161. Protrusion; 170. Mounting block; 171. Annular groove;

[0029] 200, enclosure; 210, mounting holes. Detailed Implementation

[0030] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0031] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0032] Furthermore, where the term "and / or" appears, "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship. Where the terms "first" and "second" appear, these terms are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" can explicitly or implicitly include at least one of those features. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0036] See Figure 1As shown, in related technologies, the level switch body 2 is fixed to the side wall of the liquid container 1 using fasteners such as nuts 3 or flanges. This assembly method requires tightening with tools such as wrenches, which is complex, inefficient, and the sealing performance depends on the installer's experience, making it prone to leakage or poor sealing. Furthermore, the float may detach during use, affecting the stability and reliability of the switch.

[0037] Continue reading Figure 2 As shown, to improve the above-mentioned problems, an embodiment of this application provides a liquid level switch 100, which can be easily installed on a container. The liquid level switch 100 includes a main body 110 and a latch 120. The latch 120 is disposed at the upper end of the main body 110 along the direction of gravity, and the latch 120 includes a mounting portion 121 and an elastic portion 122. The mounting portion 121 is fixed to the main body 110, and along the direction of gravity, the upper end of the elastic portion 122 is connected to the mounting portion 121, and the lower end opens in a direction away from the main body 110; the elastic portion 122 is configured to move closer to the main body 110 under external pressure.

[0038] For example, the main body 110 is a hollow tubular structure, and its material can be PP (Polypropylene), PE (Polyethylene), PC (Polycarbonate), etc., without specific limitation. The mounting part 121 is a cylindrical structure and is fixedly connected to the main body 110. The upper end of the elastic part 122 is connected to the main body 110, and the lower end extends away from the main body 110, thereby forming a Λ-shaped structure. Under external pressure, the elastic part 122 can fit into the mounting part 121, thereby facilitating the installation of the level switch 100.

[0039] For ease of understanding, this application uses a water tank 1000 as an example to illustrate the mounting carrier of the level switch 100. A mounting hole 210 is provided on the side wall of the tank 200. The diameter of the mounting hole 210 should be slightly larger than the outer diameter of the mounting part 121, but smaller than the outer diameter of the elastic part 122 after it opens. Thus, during installation, the operator presses the elastic part 122, causing it to fit against the mounting part 121. The overall outer diameter of the buckle 120 is smaller than the diameter of the mounting hole 210, allowing the level switch 100 to pass through the mounting hole 210. After the elastic part passes through the mounting hole 210, the operator releases it, and the elastic part automatically resets and opens, mounting the level switch 100 onto the tank 200. This application achieves direct assembly after the level switch 100 passes through the tank 200 simply by automatically resetting the buckle 120, without the need for additional tools, making operation convenient and significantly improving assembly efficiency.

[0040] Optionally, the number of elastic parts 122 can be one, two, three, four, etc., and they are distributed around the mounting part 121 in sequence. The specific number can be reasonably selected according to actual needs, and no specific limitation is made here.

[0041] In some embodiments, the snap-fit ​​120 may be integrally formed with the body 110 to reduce assembly steps.

[0042] In some embodiments, a spring may be provided between the elastic part 122 and the mounting part 121, and the spring abuts against the elastic part 122 and the mounting part 121 respectively, opening the elastic part 122 away from the mounting part 121. Of course, this method is only a supplementary description. In the embodiments of this application, the elastic part 122 may maintain the opening away from the mounting part 121 based on the toughness of its own material.

[0043] Continue reading Figure 3 As shown, in some embodiments, a groove 1211 is provided at the position corresponding to the elastic part 122, and the elastic part 122 can be pressed into the groove 1211.

[0044] For example, each elastic part 122 corresponds to a groove 1211, and the depth of the groove 1211 should not be less than the thickness of the elastic part 122. In this way, the elastic part 122 can be completely retracted into the groove 1211 when pressed, thereby reducing the size of the buckle 120 when pressed, making it easier for the buckle 120 to pass through the mounting hole 210 of the housing 200, and improving the ease of installation.

[0045] Continue reading Figure 2 and Figure 4 As shown, in some embodiments, the level switch 100 further includes a switch assembly 130. The switch assembly 130 includes a sensing element 131 and a trigger 132, the trigger 132 being slidably disposed on the body 110 and configured to move under the buoyancy of the liquid, and the sensing element 131 being fixed to the end of the body 110 away from the latch 120.

[0046] Understandably, the trigger 132 can slide relative to the main body 110. In this embodiment, the trigger 132 has a ring-shaped structure and is sleeved on the outside of the main body 110. The trigger 132 can float under the buoyancy of the liquid, so that when the water level changes, the trigger 132 moves up and down along the axis of the main body 110, thereby providing feedback on the liquid level height. The sensing element 131 is fixedly disposed at the bottom of the main body 110, and generates an electrical signal when it approaches the trigger 132. Thus, when the liquid level rises, the trigger 132 moves away from the sensing element 131, the sensing element 131 is de-energized, and the current liquid level has reached the set requirement.

[0047] For example, the trigger 132 contains a magnet, and the sensing element 131 can be an electronic magnetic switch that outputs an electrical signal using the Hall effect. When powered externally, when the trigger 132 with the magnet approaches, the sensing element 131 generates a weak electrical signal. This signal is amplified and processed by a chip, outputting a clean and stable switching signal. During the filling process of the water tank 1000, the trigger 132 initially rests at the lower end of the main body 110 due to gravity, and the sensing element 131 generates an electrical signal. As the water level rises, the trigger 132 rises under the buoyancy of the liquid, moving away from the sensing element 131, and the electrical signal from the sensing element 131 is disconnected, thus indicating that the current liquid level has reached the set water level requirement.

[0048] Continue reading Figure 4 As shown, in some embodiments, both ends of the main body 110 are provided with limiting members 140, and the trigger member 132 is restricted between the two limiting members 140.

[0049] For example, the limiting member 140 may be a retaining ring, and corresponding retaining grooves may be provided at both ends of the main body 110 to install the retaining ring in the retaining groove. In this way, the retaining rings at both ends of the main body 110 prevent the trigger member 132 from disengaging from the end of the main body 110.

[0050] In some embodiments, the level switch 100 further includes a lead 150, one end of which is connected to the sensing element 131 and the other end is connected to an external power source.

[0051] For example, after the lead 150 is connected to the power supply, it can supply power to the sensing element 131 to ensure the normal operation of the sensing element 131.

[0052] In some embodiments, the sensing element 131 and the end of the lead 150 connected to the sensing element 131 are both encapsulated within the body 110.

[0053] For example, the mounting portion 121 of the main body 110 and the buckle 120 is provided with a through cavity. The sensing element 131 is mounted in the cavity, and one end of the lead wire 150 is connected to the sensing element 131, while the other end extends out of the cavity and onto the outside of the buckle 120. In addition, this application also injects encapsulating adhesive into the cavity to seal the sensing element 131 and part of the lead wire 150 within the main body 110, thereby fixing the sensing element 131 and preventing external liquid from entering, thus reducing the risk of leakage.

[0054] See again Figure 2 As shown, in some embodiments, the level switch 100 further includes a seal 160, which is disposed at the connection between the snap 120 and the body 110.

[0055] For example, the sealing element 160 is a sealing ring and is sleeved on the outside of the mounting portion 121 of the buckle 120 so that after the liquid level switch 100 is installed in the housing 200, the wall of the housing 200 is pressed against the elastic portion 122 and the sealing element 160, thereby sealing the mounting hole 210 of the housing 200 and allowing liquid to seep out from the wall.

[0056] See again Figure 3 As shown, in some embodiments, the upper and lower surfaces of the seal 160 are provided with protrusions 161 along the direction of gravity, and the protrusions 161 are in the shape of rings.

[0057] For example, since both the upper and lower surfaces of the seal 160 are provided with protrusions 161, when in contact with the housing 200, the protrusions 161 on the upper surface of the seal 160 can preferentially contact the wall of the housing 200, and under compression, further improve the sealing effect at the mounting hole 210 of the housing 200.

[0058] In some embodiments, the end of the main body 110 connected to the buckle 120 is provided with a mounting block 170, and the mounting block 170 is provided with an annular groove 171 on the side near the seal 160, and the protrusion 161 on the lower surface of the seal 160 is fitted into the annular groove 171.

[0059] For example, the mounting block 170 is fixed to the upper end of the main body 110 to compress the seal 160 and also to provide a mounting carrier for the seal 160. By providing an annular groove 171 in the mounting block 170 and having the protrusion 161 located on the lower surface of the seal 160 fit into the annular groove 171, the connection sealing and stability between the seal 160 and the mounting block 170 are further improved, thereby enhancing the sealing effect of the seal 160.

[0060] Continue reading Figure 5 As shown, an embodiment of this application also provides a water tank 1000, including the liquid level switch 100 and the tank body 200 in any of the above embodiments. The tank body 200 is provided with a mounting hole 210, a mounting part 121 passes through the mounting hole 210, and an elastic part 122 abuts against the outside of the mounting hole 210.

[0061] For example, the water tank 1000 can be a liquid container for any water-using device, such as the hot water tank of a water heater, the clean water tank of a water purifier, the purification tank and wastewater tank of a cleaning device, the water supply tank of a humidifier, etc.

[0062] This embodiment has the liquid level switch 100 of any of the above embodiments, and therefore has all the beneficial effects of the liquid level switch 100 of any of the above embodiments, which will not be described in detail here.

[0063] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A liquid level switch, characterized in that, include: main body; A buckle is disposed at the upper end of the main body along the direction of gravity, and the buckle includes a mounting part and an elastic part; The mounting part is fixedly connected to the main body. Along the direction of gravity, the upper end of the elastic part is connected to the mounting part, and the lower end extends away from the main body. The lower end of the elastic part is configured to move towards the main body under external pressure.

2. The liquid level switch according to claim 1, characterized in that, A groove is provided at the position corresponding to the elastic part of the mounting part, and the elastic part can be pressed into the groove.

3. The level switch according to claim 1, characterized in that, The liquid level switch also includes a sensing element and a trigger. The trigger is slidably disposed on the main body and configured to move under the buoyancy of the liquid. The sensing element is fixed to the end of the main body away from the buckle.

4. The level switch according to claim 3, characterized in that, Both ends of the main body are provided with limiting members, and the trigger member is restricted between the two limiting members.

5. The level switch according to claim 3, characterized in that, The liquid level switch also includes a lead wire, one end of which is connected to the sensing element and the other end is connected to an external power source.

6. The level switch according to claim 5, characterized in that, The sensing element and the end of the lead wire connected to the sensing element are both encapsulated within the main body.

7. The level switch according to claim 1, characterized in that, The liquid level switch also includes a sealing element, which is disposed at the connection between the buckle and the main body.

8. The level switch according to claim 7, characterized in that, Along the direction of gravity, both the upper and lower surfaces of the seal are provided with protrusions, which are in the shape of rings.

9. The level switch according to claim 8, characterized in that, The main body is provided with an installation block at one end connected to the buckle. An annular groove is provided on the side of the installation block near the seal. The protrusion located on the lower surface of the seal is fitted into the annular groove.

10. A water tank, characterized in that, The liquid level switch and housing included in any one of claims 1 to 9, wherein the housing is provided with a mounting hole, the mounting part passes through the mounting hole, and the elastic part abuts against the outside of the mounting hole.

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