CN110703353B

CN110703353B - Water immersion sensor

Info

Publication number: CN110703353B
Application number: CN201910957427.3A
Authority: CN
Inventors: 王鹏飞; 宋德超; 唐杰; 陈道远; 李风娇; 刘祥浴
Original assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Lianyun Technology Co Ltd
Current assignee: Gree Electric Appliances Inc of Zhuhai; Zhuhai Lianyun Technology Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2021-01-22
Anticipated expiration: 2039-10-08
Also published as: CN110703353A

Abstract

The invention discloses a water sensor, which comprises a front cover, a horizontal switch, a PCB (printed circuit board) assembly, a battery, a rear cover and a water immersion probe, wherein the front cover is hermetically connected with the rear cover; a cavity for accommodating the horizontal switch, the PCB assembly and the battery is formed between the front cover and the rear cover; the water immersion probe penetrates through the rear cover, one end of the water immersion probe is connected with the PCB assembly in the cavity, and the other end of the water immersion probe extends out of the rear cover; the contact position of the water immersion probe and the rear cover is sealed; the front cover comprises a pressing part, and the pressing part can trigger the horizontal switch to be opened and closed after being pressed and further trigger the PCB assembly to be opened and closed. According to the water sensor, through the reasonable design of the front cover and the rear cover, the outer surface of the water sensor is not provided with an independent key, so that the structure of a product is simplified, the processing difficulty is reduced, and the cost is reduced.

Description

Water immersion sensor

Technical Field

The invention relates to a temperature and humidity sensor, in particular to a water immersion sensor.

Background

Along with the development of the internet, smart homes also start to develop in a well-spraying manner, more and more smart products are used in homes, such as lighting systems, curtain control, air conditioner control, security systems, network home appliances and the like, and the internet connects various devices in homes together to provide multiple functions and means such as home appliance control, lighting control, telephone remote control, anti-theft alarm, environment monitoring and the like.

However, with the prevalence of smart homes, some intelligent control products are also needed for some emergency situations, for example, a water leakage phenomenon occurs in a home, and specifically, when there is no person in the home, if a water pipe leaks or a water using device such as a water tap leaks, the existing smart home product cannot contact with the owner, and there is a great danger.

Therefore, a water sensor appears in the market, when no person is in the house, if water leakage occurs in pipelines or water consumption equipment such as a water tap and the like, information can be transmitted to a mobile phone, even a water path master gate can be directly closed, and the risk that the house is flooded by water is avoided. But current water sensor all is equipped with independent button on the shell surface for join in marriage net or set up the sensor, but because the setting of independent button, waterproof requirement to water sensor is very high, because too high waterproof design, leads to the processing degree of difficulty too high, and the cost risees. Therefore, how to design the product effectively and with low cost plays a crucial role in product competitiveness.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a water sensor, wherein no key is exposed on the surface of a shell, so that the problems of complicated waterproof function structure, high processing difficulty and high cost of the water sensor due to the arrangement of an independent exposed key can be effectively solved.

The water sensor comprises a front cover, a horizontal switch, a PCB (printed circuit board) assembly, a battery, a rear cover and a water immersion probe, wherein the front cover is hermetically connected with the rear cover; a cavity for accommodating the horizontal switch, the PCB assembly and the battery is formed between the front cover and the rear cover;

the water immersion probe penetrates through the rear cover, one end of the water immersion probe is connected with the PCB assembly in the cavity, and the other end of the water immersion probe extends out of the rear cover; the contact position of the water immersion probe and the rear cover is sealed;

the front cover comprises a pressing part, and the pressing part can trigger the horizontal switch to be opened and closed after being pressed and further trigger the PCB assembly to be opened and closed.

In one embodiment, the pressing part is formed in the middle of the front cover, and a connecting part integrally connected with the pressing part is formed around the pressing part; the thickness dimension of the front cover gradually increases along the direction of the center of the pressing part towards the edge of the connecting part.

In one embodiment, a key position which can abut against the horizontal switch in a pressed state is arranged at the middle position of the pressing part towards the inside of the cavity.

In one embodiment, the key position is a cylindrical shape, a cross-shaped cylindrical shape, or a triangular cylindrical shape integrally formed with the bezel pressing portion.

In one embodiment, the rear cover comprises a buckling part and a mounting part located in the middle of the rear cover, and the buckling part is connected with the connecting part in a sealing mode.

In one embodiment, the front cover and the rear cover are each disc-shaped.

In one embodiment, the connecting portion includes an inner ring connecting portion and an outer ring connecting portion, which are respectively connected to the inner wall surface and the outer wall surface of the fastening portion in a sealing manner, and a clamping groove for clamping and fastening the fastening portion is formed between the inner ring connecting portion and the outer ring connecting portion.

In one embodiment, the joint between the outer ring connecting part and the buckling part is sealed by waterproof glue.

In one embodiment, the rear cover is integrally formed with a fixing portion facing the inside of the cavity at the mounting portion, and an accommodating space for accommodating the battery is formed in the middle of the fixing portion.

In one embodiment, the fixing portion is annular and fixedly connected to the PCB board assembly.

In one embodiment, any region of the rear cover except for the region corresponding to the fixing portion and the accommodating space is provided with at least one through hole for the water logging probe to pass through.

The features mentioned above can be combined in various suitable ways or replaced by equivalent features as long as the object of the invention is achieved.

The water sensor has the advantages of good waterproof effect, simplified product structure, reduced processing difficulty and reduced cost. The water logging sensor can transmit water leakage information of the house to the mobile phone, and even can directly close the water way main gate, so that the risk of flooding the house is avoided.

Drawings

The invention will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

FIG. 1 shows an exploded perspective view of a water sensor in accordance with an embodiment of the present invention;

figure 2 shows a schematic cross-sectional view of a water sensor in an embodiment of the present invention.

In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.

Detailed Description

The invention will be further explained with reference to the drawings.

In the description of the present invention, it is to be understood that the terms "inside", "outside", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 and 2, the water sensor of the present invention includes a front cover 1, a horizontal switch 5, a PCB 2, a negative elastic sheet 6, a battery 7, a positive elastic sheet 3, a rear cover 4, and a water probe 8. Wherein: the electronic components such as the PCB 2, the cathode elastic sheet 6, the anode elastic sheet 3 and the like are collectively called as a PCB assembly.

The front cover 1 is hermetically connected with the rear cover 4, a cavity 12 for accommodating the horizontal switch 5, the PCB 2, the negative elastic sheet 6, the battery 7 and the positive elastic sheet 3 is formed between the front cover 1 and the rear cover 4, the water immersion probe 8 is arranged on the rear cover 4 in a penetrating way, one end of the water immersion probe is connected with the PCB assembly in the cavity 12, and the other end of the water immersion probe extends out of the rear cover 4; the contact position of the water logging probe 8 and the rear cover 4 is sealed.

The front cover 1 is provided with a pressing portion 10, and the pressing portion 10 can trigger the horizontal switch 5 to open and close after being pressed, and further trigger the PCB assembly to open and close.

The front cover 1 may be formed by processing a tough thermoplastic resin (hereinafter referred to as PC) material, preferably by one-shot injection molding, and has a characteristic of good resilience without being crushed by pressing because the PC material has high strength and toughness. Preferably, the front cover 1 and the rear cover 4 are both disc-shaped, so that injection molding and processing are convenient, and the water sensor can be square, diamond and other shapes, so that the water sensor can be conveniently installed together with other equipment, and more decorative effects can be achieved. The present embodiment is described by taking a disc shape as an example, but is not limited thereto.

As shown in fig. 1 and 2, the front cover 1 includes a pressing portion 10 and a connecting portion 11 which are integrally formed, and the connecting portion 11 is used for being hermetically connected with the rear cover 4. In the front cover 1 in this embodiment, the pressing portion 10 in the middle is used as a center of a circle and extends toward the surrounding connecting portion 11, and in the process of extending toward the connecting portion 11, the thickness of the front cover 1 gradually increases, that is, the pressing portion 10 in the middle is thinnest, the connecting portion 11 is thickest, and the middle changes from thin to thick.

Key 13 for abutting against the horizontal switch 5 is arranged towards the inside of the cavity 12 at the middle position of the pressing part 10, the key 13 can be contacted with the horizontal switch 5 in the process of pressing the pressing part 10 on the outer surface of the front cover 1, and the key 13 can rebound along with the pressing part 10 and is separated from the horizontal switch 5 in the process of not pressing or giving up pressing. Preferably, the key 13 may be a cylinder integrally formed with the pressing portion 10, a cross-shaped cylinder as shown in fig. 1, or a triangular cylinder, as long as it can be pressed and contacted with the horizontal switch 5, and is convenient to process.

The connecting part 11 of the front cover 1 comprises an inner ring connecting part 14 and an outer ring connecting part 15 which are respectively connected with the inner wall surface and the outer wall surface of the buckling part 16 of the rear cover 4 in a sealing way, and a clamping groove 9 for clamping and buckling the buckling part 16 of the rear cover 4 is formed between the inner ring connecting part 14 and the outer ring connecting part 15. After the front cover 1 and the rear cover 4 are clamped and connected, waterproof glue is coated at the joint, namely the inner wall surfaces of the inner ring connecting part 14 and the buckling part 16 and the outer wall surfaces of the outer ring connecting part 15 and the buckling part 16, so that double sealing is formed between the rear cover 4 and the front cover 1, and water cannot enter the water sensor from the joint of the rear cover 4 and the front cover 1. Preferably, the connection between the connecting portion 11 and the buckling portion 16 is a direct-insertion interference fit connection, but may also be a sealing connection of threads or the like, which will not be described in detail herein.

As shown in fig. 1 and 2, preferably, the rear cover 4 is also formed by one-time injection molding, and includes an engaging portion 16 and a mounting portion 17, the engaging portion 16 is hermetically connected to the front cover 1, and the mounting portion 17 is located in the middle of the engaging portion 16 and integrally connected to the engaging portion 16. Specifically, when the engaging portion 16 is inserted into the engaging groove 9 of the front cover 1, the inner and outer wall surfaces thereof abut against the inner ring connecting portion 14 and the outer ring connecting portion 15, respectively. The mounting portion 17 is integrally formed with a fixing portion 18 facing the inside of the cavity 12, the fixing portion 18 has a circular longitudinal section, and an accommodating space 20 for accommodating the battery 7 is formed in the middle of the fixing portion 18, so that the battery 7 can be conveniently fixed and mounted. The end of the fixing portion 18 is used for fixedly mounting the PCB 2 and the cathode elastic sheet 6 and the anode elastic sheet 3, and for the fixed mounting and the specific structure of the fixing portion 18 and the PCB 2, the cathode elastic sheet 6 and the anode elastic sheet 3, it is easy for those skilled in the art to implement, and therefore, the detailed description is not repeated. The horizontal switches 5 corresponding to the key positions 13 are fixedly arranged in the PCB 2.

Two through holes 19 are formed in the mounting portion 17 of the rear cover 4 and the region outside the corresponding region of the fixing portion 18 and the accommodating space 20, as shown in fig. 1, so that the water immersion probe 8 can be conveniently inserted and fixed. After the two water immersion probes 8 respectively penetrate through the two through holes 19, one end of each water immersion probe is exposed outside the rear cover 4, and the other end of each water immersion probe extends into the rear cover 4 and is connected with a circuit in the PCB 2. The water immersion probe 8 and the through hole 19 are sealed by waterproof glue, so that water can be effectively prevented from entering the water immersion sensor from a gap between the water immersion probe 8 and the through hole 19. The number of the through holes 19 is determined according to the number of the water immersion probes 8 related to the circuit in the PCB 2, and is not limited to two in the present invention.

When the condition that no person is in the house, the water sensor can be started in advance, so that the water sensor is arranged in a distribution network and is in signal connection with a mobile phone, and the condition in the house is safely monitored and controlled. When the water sensor is required to be arranged in a distribution network, the middle position of the front cover 1, namely the pressing part 10 of the front cover 1, can be directly pressed, so that the key positions 13 in the front cover 1 are abutted against the horizontal switch 5, and the functions of the distribution network and the arrangement are achieved. When the water sensor is in an enabled state, if water leakage occurs in a pipeline or water leakage of water using equipment such as a water tap and the like, the water sensor can transmit information to a mobile phone, and even can directly close a water way main gate, so that the risk of flooding at home is avoided. For how the water sensor transmits the water leakage information to the mobile phone and how to close the water path main gate, the water leakage information is realized by a circuit in the PCB 2 and the Internet and all intelligent devices in a home, for the PCB 2, a commercially available PCB can be adopted, and for the connection of the circuit in the PCB 2, the Internet and all intelligent devices in the home according to the intelligent home setting, the connection is easy to realize for technicians in the field, belongs to the prior art, and is not described in detail herein.

In summary, according to the water sensor disclosed by the invention, through the reasonable design of the front cover and the rear cover, the outer surface of the water sensor is not provided with an independent key any more, so that the structure of a product can be simplified, the processing difficulty is reduced, the cost is reduced while the safety monitoring and control can be carried out on a user, and the water sensor has a good waterproof function.

Although the invention herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that features described in different dependent claims and herein may be combined in ways different from those described in the original claims. It is also to be understood that features described in connection with individual embodiments may be used in other described embodiments.

Claims

1. A water sensor comprises a front cover (1), a horizontal switch (5), a PCB board component, a battery (7), a rear cover (4) and a water immersion probe (8),

the front cover (1) is hermetically connected with the rear cover (4), and a cavity (12) for accommodating the horizontal switch (5), the PCB assembly and the battery (7) is formed between the front cover (1) and the rear cover (4);

the water immersion probe (8) penetrates through the rear cover (4), one end of the water immersion probe is connected with the PCB assembly in the cavity (12), the other end of the water immersion probe extends out of the rear cover (4), and the position where the water immersion probe (8) is contacted with the rear cover (4) is sealed;

the front cover (1) comprises a pressing part (10) and a connecting part (11) which are integrally formed, the pressing part (10) is formed in the middle of the front cover (1), and the connecting part (11) which is integrally connected with the pressing part (10) is formed around the pressing part (10); the thickness dimension of the front cover (1) is gradually increased along the direction of the pressing part (10) towards the connecting part (11); the pressing portion (10) and the connecting portion (11) have toughness, the pressing portion (10) can trigger the horizontal switch (5) to be opened and closed after being pressed, and further trigger the PCB assembly to be opened and closed, and the pressing portion (10) can rebound when the pressing portion (10) is not pressed or is not pressed.

2. A water sensor according to claim 1, characterized in that the middle position of the pressing part (10) towards the inside of the cavity (12) is provided with a key (13) which can abut against the horizontal switch (5) in a pressed state.

3. A water sensor according to claim 2, wherein the key (13) is in the shape of a cylinder, cross or triangular prism integrally formed with the pressing portion (10) of the front cover (1).

4. A water sensor according to any one of claims 1-3, wherein the rear cover (4) comprises a snap-fit portion (16) at the edge of the rear cover (4) and a mounting portion (17) at the middle of the rear cover (4), the snap-fit portion (16) being sealingly connected to the connecting portion (11).

5. A water sensor according to claim 4, wherein the front cover (1) and the rear cover (4) are both disc-shaped.

6. The water sensor according to claim 4, wherein the connecting part (11) comprises an inner ring connecting part (14) and an outer ring connecting part (15) which are respectively connected with the inner wall surface and the outer wall surface of the buckling part (16) in a sealing manner, and a clamping groove (9) for clamping and buckling the buckling part (16) is formed between the inner ring connecting part (14) and the outer ring connecting part (15).

7. The water sensor of claim 6, wherein the joint between the outer ring connecting part (15) and the buckling part (16) is sealed by waterproof glue.

8. A water sensor according to claim 4, characterized in that the rear cover (4) is integrally formed with a fixing portion (18) at the mounting portion (17) towards the inside of the cavity (12), and the fixing portion (18) is formed with a receiving space (20) in the middle for receiving the battery (7).

9. A water sensor according to claim 8, wherein the fixing part (18) is circular in longitudinal section and fixedly connected to the PCB board assembly.

10. A water sensor according to claim 8, wherein the rear cover (4) is provided with at least one through hole (19) for the water probe (8) to pass through in any region except the corresponding regions of the fixing part (18) and the accommodating space (20).