Water immersion sensor

Abstract

The application discloses a water immersion sensor, comprising: a shell provided with a threaded hole, a limiting part is arranged at the rotation end point of the threaded hole; a battery cover comprising a threaded part and a cover plate, the threaded part is arranged on the cover plate, the cover plate is provided with a slot, and the outer wall of the threaded part is provided with a screw thread; wherein after the threaded part of the battery cover is screwed into the threaded hole, the limiting part can abut against the rotation starting point of the screw thread and limit the screw thread, so that the slot is located in a specific direction. Through improvement of the screw thread structure connecting the battery cover and the shell, the slot of the battery cover is located in a specific direction after the battery cover is screwed into the shell, and the product has higher appearance consistency.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to water immersion sensors. Background Technology

[0002] A water immersion sensor is a sensor that detects whether there is water leakage within a measured area. Once water leakage is detected, the water immersion sensor will immediately issue an alarm to prevent related losses caused by the leakage accident. The water immersion sensor is based on the principle of liquid conductivity, using electrodes to detect the presence of water, and then converting the result into a dry contact output by the sensor.

[0003] In related technologies, portable water immersion sensors are small in size, do not require an external power supply, and have a wide range of applications. These sensors power the control circuit board via a built-in battery. A typical water immersion sensor includes a housing, a detection probe, a control circuit board, and a battery. The control circuit board and battery are housed within the housing cavity, with the control circuit board electrically connected to the battery. The detection probe is electrically connected to the control circuit board and partially protrudes from the housing. When water leakage occurs, the probe protruding from the housing comes into contact with water, triggering an alarm from the water immersion sensor.

[0004] To facilitate battery replacement, these types of water immersion sensors are typically equipped with a removable battery cover. The battery cover has a slot, and there are two detection probes connected horizontally. However, after the battery cover is screwed into the housing and tightened, the slot of the battery cover and the connection line of the two detection probes are not aligned, which reduces the consistency of the product's appearance. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a water immersion sensor that enables the battery cover slot to be positioned in a specific direction after the battery cover is screwed into the housing, resulting in a high degree of product appearance consistency.

[0006] A water immersion sensor according to a first aspect of the present invention includes:

[0007] The housing has a threaded hole, and a limit part is provided at the end point of rotation of the threaded hole;

[0008] A battery cover includes a threaded portion and a cover plate, wherein the threaded portion is disposed on the cover plate, the cover plate is provided with a slot, and the outer wall of the threaded portion is provided with threads;

[0009] The battery cover is threadedly connected to the threaded hole, and the limiting part can abut against the rotation starting point of the thread and limit the battery cover so that the slot is arranged in a specific direction.

[0010] The water immersion sensor according to the embodiments of the present invention has at least the following beneficial effects: by improving the thread structure of the battery cover and the housing, that is, by setting a limiting part in the threaded hole of the housing to limit the thread of the threaded part of the battery cover, the slot of the battery cover can be arranged in a specific direction after the battery cover is screwed into the housing, and the product has a high degree of appearance consistency.

[0011] According to some embodiments of the present invention, two detection probes are provided inside the housing, and the two detection probes are located on the same side wall of the housing. The line connecting the probes of the two detection probes is horizontal. The slot is in the shape of a straight line. After the battery cover is tightened, the slot is parallel to the direction of the line connecting the two probes.

[0012] According to some embodiments of the present invention, the housing has a mounting portion and a bottom wall, the mounting portion being capable of mounting a detection probe and having the detection probe at an angle to the bottom wall.

[0013] According to some embodiments of the present invention, the housing is further provided with a first sidewall and a second sidewall. The first sidewall is inclinedly disposed on the bottom wall, and the second sidewall is perpendicular to the bottom wall and located at one end of the first sidewall relative to the bottom wall. The water immersion sensor has a first state and a second state. In the first state, the bottom wall coincides with the horizontal plane, and the gap N1 between the lowest point of the detection probe and the horizontal plane satisfies: 0.1mm≤N1≤5mm. In the second state, the second sidewall coincides with the horizontal plane, and the gap N2 between the lowest point of the detection probe and the horizontal plane satisfies: 0.1mm≤N2≤5mm.

[0014] According to some embodiments of the present invention, the angle α between the detection probe and the bottom wall satisfies: 10°≤a≤80°.

[0015] According to some embodiments of the present invention, the housing includes an upper shell and a lower shell, the upper shell covering the lower shell, and a sealing structure is provided at the connection position between the upper shell and the lower shell.

[0016] According to some embodiments of the present invention, the sealing structure includes a first groove and a first protrusion, the first groove being located in the upper shell and the first protrusion being located in the lower shell, the first protrusion being capable of being embedded in the first groove.

[0017] According to some embodiments of the present invention, the outer surface of the cover plate is flush with the outer surface of the lower shell.

[0018] According to some embodiments of the present invention, the lower shell is provided with a buckle, the upper shell is provided with a slot, and the lower shell and the upper shell are engaged by the buckle and the slot.

[0019] According to some embodiments of the present invention, the upper shell and the lower shell are connected by ultrasonic welding.

[0020] According to some embodiments of the present invention, the housing has an inner cavity and a mounting block, wherein the first mounting block is located in the inner cavity and is capable of mounting a control circuit board.

[0021] According to some embodiments of the present invention, the housing is provided with a second groove surrounding the threaded hole, the second groove is capable of installing a sealing ring, and the cover plate is capable of closing the second groove.

[0022] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0024] Figure 1 This is a cross-sectional view of a water immersion sensor according to an embodiment of the present invention;

[0025] Figure 2 This is a partially enlarged view of a water immersion sensor in a first state according to an embodiment of the present invention;

[0026] Figure 3 This is a partially enlarged view of a water immersion sensor in a second state according to an embodiment of the present invention;

[0027] Figure 4 This is a top view of a water immersion sensor according to an embodiment of the present invention;

[0028] Figure 5 This is an exploded view of a water immersion sensor according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of a battery cover according to an embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of the lower shell according to an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the upper shell according to an embodiment of the present invention.

[0032] Figure label:

[0033] Housing 100, upper housing 110, lower housing 120, bottom wall 130, first side wall 140, second side wall 150, mounting part 160, guide part 161, first groove 170, second groove 180, third groove 190, first protrusion 200, buckle 210, threaded hole 220, limiting part 221, battery cover 300, threaded part 310, thread 320, cover plate 330, detection probe 400, second protrusion 410, support block 420, slot 500, battery 600, control circuit board 700. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0036] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0037] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0038] A water immersion sensor is a sensor that detects whether there is water leakage within a measured area. Once water leakage is detected, the water immersion sensor will immediately issue an alarm to prevent related losses caused by the leakage accident. The water immersion sensor is based on the principle of liquid conductivity, using electrodes to detect the presence of water, and then converting the result into a dry contact output by the sensor.

[0039] In related technologies, portable water immersion sensors are small in size, do not require an external power supply, and have a wide range of applications. These sensors power the control circuit board via a built-in battery. A typical water immersion sensor includes a housing, a detection probe, a control circuit board, and a battery. The control circuit board and battery are housed within the housing cavity, with the control circuit board electrically connected to the battery. The detection probe is electrically connected to the control circuit board and partially protrudes from the housing. When water leakage occurs, the probe protruding from the housing comes into contact with water, triggering an alarm from the water immersion sensor.

[0040] To facilitate battery replacement, these types of water immersion sensors are typically equipped with a removable battery cover. The battery cover has a slot, and there are two detection probes connected horizontally. However, after the battery cover is screwed into the housing and tightened, the slot of the battery cover and the connection line of the two detection probes are not aligned, which reduces the consistency of the product's appearance and thus affects its market prospects.

[0041] To address the drawbacks of this type of water immersion sensor, this invention provides a water immersion sensor that, by improving the structure of the screw threads, ensures that the slot of the battery cover is positioned in a specific direction after it is screwed into the housing, resulting in a higher degree of product appearance consistency.

[0042] Reference Figure 1 The water immersion sensor provided in this embodiment of the invention includes a housing 100 and a detection probe 400. Specifically, the housing 100 has a bottom wall 130 and a first side wall 140. The first side wall 140 is inclinedly disposed on the bottom wall 130 and has a through hole (not shown in the figure). The detection probe 400 passes through the through hole and part of the detection probe 400 is located outside the housing 100. The angle α between the axial direction of the through hole and the bottom wall 130 satisfies the relationship: 10°≤a≤80°.

[0043] It should be noted that the angle α between the axis of the through hole and the bottom wall 130 satisfies the relationship 10°≤a≤80°. That is, the detection probe 400 obliquely passes through the housing 100 from the first side wall 140. When the water immersion sensor is placed horizontally, the bottom wall 130 contacts the horizontal wall of the area to be measured. The water leaking in the area to be measured is at a detectable distance from the lowest point of the detection probe 400. When the water immersion sensor is placed vertically, the bottom wall 130 contacts the vertical wall of the area to be measured. The water leaking in the area to be measured is at a detectable distance from the lowest point of the probe. This ensures that the detection probe 400 will not be too close or too far from the leaking water surface when the water immersion sensor is placed horizontally or vertically, and the water immersion sensor has good detection sensitivity.

[0044] It should be noted that, in the embodiments of the present invention, the bottom wall 130 of the housing 100 is the same as the bottom wall 130 of the lower housing 120, and the first side wall 140 of the housing 100 is the same as the first side wall 140 of the lower housing 120.

[0045] It should be noted that a mounting part 160 is provided inside the housing 100 at the position of the through hole. The detection probe 400 is mounted on the mounting part 160, which is an arched protrusion. The detection probe 400 includes a detection part and a connecting part. The detection part passes through the through hole and exposes the probe of the detection probe 400 located in the detection part outside the housing 100, which is conducive to the probe of the detection probe 400 contacting the leaked water. The connecting part is mounted on the mounting part 160, and the detection probe 400 is electrically connected to the control circuit board 700 through the connecting part.

[0046] It should be noted that the detection probe 400 is interference-fitted with the through hole, and a sealing ring is provided between the detection probe 400 and the through hole to achieve a seal. By designing the detection probe 400 and the through hole as an interference fit, the mounting part 160 can secure the detection probe 400 and ensure good sealing performance of the housing 100 in the position of the through hole.

[0047] It should be noted that the housing 100 provided in the embodiment of the present invention includes an upper housing 110 and a lower housing 120. The upper housing 110 covers the lower housing 120. A sealing structure is provided at the connection position of the upper housing 110 and the lower housing 120. The sealing structure includes a first groove 170 and a first protrusion 200. The first groove 170 is located in the upper housing 110, and the first protrusion 200 is located in the lower housing 120. The first protrusion 200 can be embedded in the first groove 170, so that the upper housing 110 and the lower housing 120 have good sealing performance after connection.

[0048] It should be noted that the upper shell 110 and the lower shell 120 are generally made of plastic. In this embodiment of the invention, the upper shell 110 and the lower shell 120 are welded using an ultrasonic welding machine. Ultrasonic welding utilizes high-frequency vibration waves transmitted to the surfaces of two objects to be welded. Under pressure, the surfaces of the two objects rub against each other, forming a fusion between molecular layers. It can be understood that ultrasonic welding between plastics uses a fusion welding method. Specifically, the fusion welding method uses an ultrasonic welding head vibrating at an ultra-high frequency under appropriate pressure to generate frictional heat at the joint surfaces of the two plastic pieces, causing them to melt and fuse instantly. The welding strength is comparable to that of a one-piece molded workpiece. By using suitable workpieces and a reasonable interface design, watertightness and airtightness can be achieved, eliminating the inconvenience of using auxiliary parts and realizing efficient and clean welding.

[0049] It should be noted that the lower shell 120 is provided with a snap fastener 210, and the upper shell 110 is provided with a slot (not shown in the figure). The lower shell 120 and the upper shell 110 are engaged by the snap fastener 210 and the slot. This engagement of the upper shell 110 and the lower shell 120 facilitates the fixation of the lower shell 120 and the upper shell 110 during the pre-assembly stage, improving the product's aesthetics. The snap fastener 210 may also be provided with reinforcing ribs (not shown in the figure). These reinforcing ribs are located at the connection between the snap fastener 210 and the lower shell 120, strengthening the snap fastener 210 and preventing it from breaking during engagement.

[0050] Reference Figure 2 and Figure 3 The housing 100 has a second sidewall 150, which is perpendicular to the bottom wall 130. A first sidewall 140 is located between the second sidewall 150 and the bottom wall 130. The water immersion sensor has a first state and a second state. In the first state, the bottom wall 130 coincides with the horizontal plane, and the gap N1 between the lowest point of the detection probe 400 and the horizontal plane satisfies: 0.1mm ≤ N1 ≤ 5mm. In the second state, the second sidewall 150 coincides with the horizontal plane, and the gap N2 between the lowest point of the detection probe 400 and the horizontal plane satisfies: 0.1mm ≤ N2 ≤ 5mm.

[0051] It should be noted that regardless of the angle at which the detection probe 400 is arranged, as long as the lowest point of the detection probe 400 satisfies 0.1mm≤N1≤5mm in the first state and 0.1mm≤N2≤5mm in the second state, the water immersion sensor can have good detection sensitivity whether it is placed horizontally or vertically.

[0052] It should be noted that, in this embodiment of the invention, the bottom wall 130 of the housing 100 is the same as the bottom wall 130 of the lower housing 120, and the second side wall 150 of the housing 100 is the same as the second side wall 150 of the upper housing 110. When installing the water immersion sensor, the bottom wall 130 can directly contact the wall surface of the area to be measured, and the second side wall 150 can also directly contact the wall surface of the area to be measured, depending on the actual installation situation. The water immersion sensor provided in this embodiment of the invention can be placed vertically or horizontally, and both vertical and horizontal placement have good detection sensitivity.

[0053] It should be noted that the detection probe of a water immersion sensor is generally designed to be at least 0.8 mm away from the horizontal plane of the leak and at least 1.2 mm away. This distance ensures that the water immersion sensor will not give a false alarm due to a small amount of water leaking, nor will it only issue an alarm when the leak has become severe due to a large distance.

[0054] It should be noted that there are two installation methods for the water immersion sensor in the first state. The first method involves placing the sensor horizontally with the bottom wall 130 directly contacting the area to be measured. This method is suitable for situations where leakage incidents cannot be too frequent and there is ample horizontal installation space. When the leaking water level rises to a distance of 0.1mm ≤ N1 ≤ 5mm, the water surface directly contacts the probe of the water immersion sensor, and the sensor activates. The second method involves placing the sensor horizontally, but with the bottom wall 130 suspended, and the second side wall 150 directly contacting the area to be measured. This method is suitable for situations where the alarm for leakage incidents can be delayed appropriately and there is ample horizontal installation space. When the leaking water level contacts the bottom wall 130 and continues to rise by 0.1mm ≤ N1 ≤ 5mm, the water surface directly contacts the probe of the water immersion sensor, and the sensor activates.

[0055] It should be noted that the water immersion sensor also has two installation methods in the second state. The first method involves placing the water immersion sensor vertically, with the second sidewall 150 directly contacting the area to be measured. This method is suitable for situations where leakage incidents cannot be too frequent and there is ample vertical installation space. When the leaking water level rises to a distance of 0.1mm ≤ N2 ≤ 5mm, the water surface directly contacts the probe of the water immersion sensor, and the sensor activates. The second method involves placing the water immersion sensor vertically, but with the second sidewall 150 suspended, and the bottom wall 130 directly contacting the area to be measured. This method is suitable for situations where the alarm for leakage incidents can be appropriately delayed and there is ample vertical installation space. When the leaking water level contacts the bottom wall 130 and continues to rise by 0.1mm ≤ N2 ≤ 5mm, the water surface directly contacts the water immersion sensor, and the sensor activates.

[0056] Reference Figure 4 The water immersion sensor includes a control circuit board 700, a housing 100 with an inner cavity, and two detection probes 400. The control circuit board 700 is electrically connected to the detection probes 400. The two detection probes 400 are located on the same side of the housing 100.

[0057] It should be noted that there is an inner cavity between the upper shell 110 and the lower shell 120 of the housing 100. Two detection probes 400 are disposed in the inner cavity and partially protrude from the outside of the housing 100. Specifically, the first side wall 140 of the housing 100 is the same as the first side wall 140 of the lower shell 120. The detection probes 400 pass through the through holes of the first side wall 140 and the probes of the detection probes 400 are located outside the lower shell 120.

[0058] It should be noted that in some other embodiments, multiple detection probes 400 may be provided, and multiple detection probes 400 may be provided on the first sidewall 140 of the housing 100 in different directions, which will not be described in detail here.

[0059] It should be noted that the detection probe 400 passes through the through hole, and the angle α between the axis of the through hole and the bottom wall 130 satisfies the relationship 10°≤a≤80°, meaning that the angle between the detection probe 400 and the bottom wall 130 satisfies the relationship 10°≤a≤80°. In a more specific embodiment provided in this application, the angle α between the axis of the through hole and the bottom wall 130 is equal to 45°. This setting ensures that the distance from the lowest point of the detection probe 400 to the bottom wall 130 or the second side wall 150 of the housing 100 is the same, and the water immersion sensor has the same detection sensitivity whether it is set horizontally or vertically.

[0060] It should be noted that the distances from the detection probe 400 to the bottom wall 130 and the second side wall 150 are equal. Specifically, when the angle α between the axis of the through hole and the bottom wall 130 is 45°, in the first state, the gap between the lowest point of the detection probe 400 and the horizontal plane is N1, and in the second state, the gap between the lowest point of the detection probe 400 and the horizontal plane is N2. Regardless of whether it is the first state or the second state, N1 = N2, that is, the gap between the lowest point of the detection probe 400 and the horizontal plane is equal, and the water immersion sensor has good detection sensitivity whether it is placed vertically or horizontally.

[0061] Reference Figure 5 and Figure 6 The housing 100 includes a threaded hole 220, and a limiting part 221 is provided at the rotation endpoint of the threaded hole 220. The limiting part 221 is as follows: Figure 7 As shown, the water immersion sensor is also provided with a battery cover 300, which can accommodate a battery 600. The battery cover 300 includes a threaded portion 310 and a cover plate 330. The threaded portion 310 is disposed on the cover plate 330, and the cover plate 330 is provided with a slot 500. The outer wall of the threaded portion 310 is provided with threads 320. When the threaded portion 310 of the battery cover 300 is screwed into the threaded hole 220, the limiting portion 221 can abut against the rotation starting point of the threads 320 and limit the threads 320, so that the slot 500 is arranged in a specific direction.

[0062] It should be noted that, as Figure 6 As shown, the starting point of rotation for thread 320 is the end of thread 320 furthest from cover plate 330. For example... Figure 7 As shown, the rotation endpoint of the threaded hole 220 is the end of the internal thread of the threaded hole 220 away from the bottom wall 130 of the housing 100.

[0063] It should be noted that, as Figure 4As shown, two detection probes 400 are provided inside the housing 100, and the two detection probes 400 are located on the same side wall of the housing 100. Specifically, the two detection probes 400 are located in the same direction on the first side wall 140 of the lower housing 120, and the line connecting the probes of the two detection probes 400 is horizontal. The slot 500 is in the shape of a straight line. After the battery cover 300 is tightened, the slot 500 is parallel to the direction of the line connecting the two probes. In some other embodiments, the slot 500 can be designed as a cross or other shape that fits a tightening tool. When it is necessary to make the direction of the slot 500 consistent with the product after the battery cover 300 is tightened, it is only necessary to pre-set the position of the limiting part 221.

[0064] It should be noted that the housing 100 has a mounting part 160 and a bottom wall 130. The mounting part 160 can mount the detection probe 400 and make the detection probe 400 tilt at an angle to the bottom wall 130.

[0065] It should be noted that the outer surface of the cover plate 330 of the battery cover 300 is flush with the outer surface of the lower shell 120, which ensures a high degree of consistency in the appearance of the product after the battery cover 300 is tightened. The shell 100 is provided with a second groove 180, which surrounds the threaded hole 220. The second groove 180 can be used to install a sealing gasket, and the cover plate 330 of the battery cover 300 can close the second groove 180.

[0066] It should be noted that, as Figure 8 As shown, the upper shell 110 is also provided with a second protrusion 410, which can abut against the control circuit board 700. This prevents the control circuit board 700 from shifting due to vibration or shaking during use, improving the stability of the water immersion sensor and reducing the probability of short circuits and open circuits in the control circuit board 700. Specifically, the housing 100 is also provided with a mounting block in its inner cavity. The mounting block can support the control circuit board 700. In this embodiment, the mounting block is located inside the lower shell 120. The mounting block supports the control circuit board 700, and the second protrusion 410 of the upper shell 110 abuts against the control circuit board 700, stabilizing the control circuit board 700 from two directions. The mounting block is also provided with a third groove 190, into which the control circuit board 700 can be inserted. Specifically, five mounting blocks are arranged around the channel circumferentially. These five mounting blocks can support and hold the four side walls of the control circuit board 700, making the control circuit board 700 more stable. Since good working sensitivity is the most important performance characteristic for users, it is particularly important to improve the sensitivity of the water immersion sensor during operation by improving the mounting structure of the housing 100 of the water immersion sensor.

[0067] It should be noted that the mounting block is also provided with a guide portion 161. The shape of the guide portion 161 can match the inner wall of the upper shell 110, making it easier for the upper shell 110 to be placed on the lower shell 120. At the same time, the guide portion 161 of the mounting block abuts against the inner wall of the upper shell 110, providing support for the upper shell 110 and providing a certain supporting force when the upper shell 110 is subjected to compression. Shock-absorbing material (not shown in the figure) can also be provided on the mounting block, that is, shock-absorbing material is provided at the engagement position between the control circuit board 700 and the mounting block to reduce wear on the control circuit board 700 when subjected to vibration or shaking. For example, rubber pads can be provided at the contact position between the mounting block and the control circuit board 700, which will not be elaborated here.

[0068] It should be noted that a support block 420 is also provided at the end of the inner cavity of the lower shell 120, which is located away from the bottom wall 130 and is located in the threaded hole 220. The support block 420 can support the control circuit board 700. The support block 420 supports the control circuit board 700 from the bottom. The support block 420, together with the mounting block, can provide good support for the control circuit board 700.

[0069] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A water immersion sensor, characterized in that, include: The housing has a threaded hole, and a limit part is provided at the end point of rotation of the threaded hole; A battery cover includes a threaded portion and a cover plate, wherein the threaded portion is disposed on the cover plate, the cover plate is provided with a slot, and the outer wall of the threaded portion is provided with threads; The battery cover is threadedly connected to the threaded hole, and the limiting part can abut against the rotation starting point of the thread and limit the battery cover so that the slot is arranged in a predetermined direction; the housing has a mounting part and a bottom wall, the mounting part can mount a detection probe and make the detection probe have an inclination angle with the bottom wall; the housing is also provided with a first side wall and a second side wall, the first side wall is inclinedly disposed on the bottom wall, the second side wall is perpendicular to the bottom wall and is located at one end of the first side wall relative to the bottom wall, the water immersion sensor has a first state and a second state, in the first state, the bottom wall coincides with the horizontal plane; in the second state, the second side wall coincides with the horizontal plane.

2. The water immersion sensor according to claim 1, characterized in that, The housing contains two detection probes located on the same side wall of the housing. The line connecting the probes of the two detection probes is horizontal. The slot is in the shape of a straight line. After the battery cover is tightened, the slot is parallel to the line connecting the two probes.

3. The water immersion sensor according to claim 1, characterized in that, In the first state, the gap N1 between the lowest point of the detection probe and the horizontal plane satisfies: 0.1mm≤N1≤5mm; in the second state, the gap N2 between the lowest point of the detection probe and the horizontal plane satisfies: 0.1mm≤N2≤5mm.

4. The water immersion sensor according to claim 3, characterized in that, The angle α between the detection probe and the bottom wall satisfies: 10°≤a≤80°.

5. The water immersion sensor according to claim 1, characterized in that, The housing includes an upper shell and a lower shell, with the upper shell covering the lower shell, and a sealing structure provided at the connection between the upper shell and the lower shell.

6. The water immersion sensor according to claim 5, characterized in that, The sealing structure includes a first groove and a first protrusion. The first groove is located on the upper shell, and the first protrusion is located on the lower shell. The first protrusion can be embedded in the first groove.

7. The water immersion sensor according to claim 5, characterized in that, The outer surface of the cover plate is flush with the outer surface of the lower shell.

8. The water immersion sensor according to claim 5, characterized in that, The lower shell is provided with a buckle, and the upper shell is provided with a slot. The lower shell and the upper shell are connected by the buckle and the slot.

9. The water immersion sensor according to claim 5, characterized in that, The upper shell and the lower shell are connected by ultrasonic welding.

10. The water immersion sensor according to claim 1, characterized in that, The housing has an inner cavity and a mounting block, the mounting block being located in the inner cavity and capable of mounting a control circuit board.

11. The water immersion sensor according to claim 1, characterized in that, The housing is provided with a second groove surrounding the threaded hole. The second groove can be fitted with a sealing ring, and the cover plate can close the second groove.

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