A water tank cover

Abstract

A water tank cover, including a cover body and a sealing plug arranged in the inside of the cover body, further comprising a water level sensor, the water level sensor comprising a probe head and a signal wire, one end of the signal wire being connected with the probe head, and the other end of the signal wire sequentially penetrating through the sealing plug and the cover body. The utility model discloses the following principle: the probe head of the water level sensor is inserted into the water tank, when the probe head is soaked in water, the water level sensor does not trigger the alarm, indicating that the water tank is in normal state at this time, when the water level in the water tank drops and is lower than the probe head, the water level sensor triggers the alarm, indicating that the water tank needs to be replenished at this time. The water level sensor is integrated in the water tank cover, which is convenient to manufacture and low in cost.

Description

Technical Field

[0001] This utility model relates to a water tank cover, particularly a car water tank cover with water level detection. Background Technology

[0002] The radiator is a crucial component of a car's engine cooling system. Coolant in the radiator exchanges heat with the engine through circulation pipes, dissipating heat. After a period of normal use, the water level in the radiator will decrease, requiring periodic top-up. Additionally, a burst radiator hose can also cause the water level to drop. Currently, radiators lack water level warning devices, preventing drivers from promptly checking the water level. Failure to top up in time can lead to serious consequences. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a water tank cover with a water level detection function.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a water tank cover, including a cover body and a sealing plug disposed on the inside of the cover body, and a water level sensor. The water level sensor includes a probe and a signal wire. One end of the signal wire is connected to the probe, and the other end of the signal wire passes through the sealing plug and the cover body in sequence. The principle of this utility model is as follows: when the probe of the water level sensor is inserted into the water tank and is submerged in water, the water level sensor does not trigger an alarm, indicating that the water tank is in a normal state. When the water level in the tank drops below the probe, the water level sensor triggers an alarm, indicating that the water tank needs to be replenished. The water level sensor is integrated into the water tank cover, which is convenient to manufacture and has low cost.

[0005] As an improvement, a sealing gasket is provided on the inner side of the cover to fit tightly against it.

[0006] As an improvement, a positive pressure valve assembly is provided between the cover and the sealing plug.

[0007] As an improvement, the positive pressure valve assembly includes a lug and a spring fitted over the lug. One end of the lug is movably connected to the cover, and the outer wall of the other end of the lug is provided with an annular plate. One end of the spring abuts against the annular plate, and the other end of the spring abuts against the cover. The annular plate abuts against the sealing plug, and the signal wire passes through the lug.

[0008] As an improvement, the lug is cylindrical, with one end of the lug connected to the cover by a rivet. One end of the rivet is fixed to the cover, and the other end of the rivet is slidably connected to the lug.

[0009] As an improvement, the rivet has a through hole for the signal wire to pass through, and the through hole is filled with sealant.

[0010] As an improvement, the sealing plug includes a limiting part, a tapered part at the bottom of the limiting part, and a connecting part at the bottom of the tapered part. The limiting part is provided with a limiting groove, the annular piece is provided in the limiting groove, and the connecting part is provided with a sealing structure for sealing the signal wire.

[0011] As an improvement, the sealing structure includes a nut sleeve threadedly connected to the connecting part and a sealing ring pressed against the end of the connecting part by the nut sleeve, and the signal wire passes through the nut sleeve and the sealing ring.

[0012] As an improvement, the sealing plug is provided with a water replenishment channel, the conical part is provided with a water replenishment hole connected to the water replenishment channel, and the conical part is covered with a conical sleeve, which covers the water replenishment hole.

[0013] As an improvement, the signal wire is connected to the control line of the alarm.

[0014] The beneficial effects of this utility model compared with the prior art are: The water level sensor is integrated into the water tank cover, which can detect the water level in the tank and issue an alarm in time to avoid unnecessary damage. The water level sensor is easy to manufacture and has a low cost. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the present invention.

[0016] Figure 2 This is an exploded view of the present invention.

[0017] Figure 3 This is a schematic diagram showing the fit between the water tank cover and the water tank. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, an automotive radiator cap includes a cap body 1, a water level sensor 6, a sealing plug 3 disposed inside the cap body 1, and a positive pressure valve assembly 2 disposed between the sealing plug 3 and the cap body 1.

[0020] like Figure 1 , 2As shown, the cover 1 can be connected to the water inlet of the water tank. To achieve a seal here, a tight-fitting sealing gasket 7 is provided on the inner side of the cover 1. The positive pressure valve assembly 2 includes a cylindrical lug 21 and a spring 22 fitted over the lug 21. One end of the lug 21 is movably connected to the cover 1 via a rivet 8. One end of the rivet 8 is fixed to the cover 1, and the other end of the rivet 8 is slidably connected to the lug 21, so that the lug 21 has a certain amount of space between the sealing plug 3 and the cover 1. The rivet 8 is fixed in the middle position of the cover 1, and a wire hole 81 is provided inside the rivet 8. The outer wall of the other end of the lug 21 is provided with an annular piece 211. The diameter of the annular piece 211 is larger than the diameter of the lug 21. One end of the spring 22 abuts against the annular piece 211, and the other end of the spring 22 abuts against the cover 1. The annular piece 211 abuts against the sealing plug 3. Under the action of the spring 22, the sealing plug 3 can press the flange of the inner wall of the water tank inlet tightly, effectively preventing water in the water tank from splashing out. The water level sensor 6 includes a probe 61 and a signal wire 62. One end of the signal wire 62 is connected to the probe 61, and the other end of the signal wire 62 passes through the sealing plug 3, the lug 21, and the cover 1 in sequence before extending out of the water tank cover and connecting to the alarm. The signal wire 62 passes through the wire hole of the rivet 8, and the wire hole is filled with sealant to seal it and fix the signal wire 62. The alarm can be a voice speaker. The signal wire 62 is connected to the control line of the voice speaker, which is located in the driver's cab. When the water level in the water tank is too low, the water level sensor 6 triggers the voice speaker to alert the driver. The sealing plug 3 includes a limiting part 31, a tapered part 32 at the bottom of the limiting part 31, and a connecting part 33 at the bottom of the tapered part 32; the limiting part 31 is provided with a limiting groove, and the annular piece 211 is provided in the limiting groove; the connecting part 33 is provided with a sealing structure 5 for sealing the signal wire 62, the sealing structure 5 includes a nut sleeve 53 threadedly connected to the connecting part 33, a gasket 52 pressed against the end of the connecting part 33 by the nut sleeve 53, and a sealing ring 51, the signal wire 62 passes through the nut sleeve 53, the gasket 52 and the sealing ring 51 for sealing, or the connecting part 33 can be filled with sealant for sealing. The sealing plug 3 has a water supply channel 322 inside, and the conical part 32 has a water supply hole 321 connected to the water supply channel 322. The conical part 32 is covered by a conical sleeve 4, which is similar in shape to the conical part 32. The conical sleeve 4 is made of rubber material and has a certain elasticity. Under normal conditions, the conical sleeve 4 covers the conical part 32 and blocks the water supply hole 321. The outer wall of the water tank inlet 91 is provided with a water supply connector 92, which is connected to the auxiliary water tank through a water supply pipe. After the water tank cover is fitted with the water tank inlet 91, the sealing plug 3 is located inside the inlet 91.

[0021] like Figure 3 As shown, the principle of water replenishment and venting of the water tank in this utility model is the same as that of the prior art, namely: When the air pressure inside the water tank 9 is too high, the air pressure can overcome the pressure of the spring 22 and push the sealing plug 3 upward, so that a gap is formed between the sealing plug 3 and the flange. The high-pressure gas inside the water tank 9 is discharged through the gap, and the water vapor enters the auxiliary water tank through the external water supply connector 92 and the water supply pipe at the water inlet 91.

[0022] When the water tank 9 is under normal positive pressure, the air pressure or elasticity causes the conical sleeve 4 to adhere tightly to the conical part 32, thereby sealing the water inlet hole 321 and preventing water in the water tank 9 from leaking out of the water inlet hole 321. When the water tank 9 is under negative pressure, the negative pressure sucks the conical sleeve 4 away from the surface of the conical part 32, and a gap is formed between the conical sleeve 4 and the surface of the conical part 32. At this time, the water inlet hole 321, the water inlet channel 322, and the through hole 212 on the lug 21 form a water inlet path. The water inlet path is connected to the water inlet connector 92, thereby connecting the water tank 9 with the auxiliary water tank. After the auxiliary water tank replenishes water into the water inlet 91, it automatically replenishes water to the water tank through the water inlet path.

[0023] The probe 61 of the water level sensor 6 of this invention extends into the water tank. When the probe 61 is submerged in water, the water level sensor 6 does not trigger an alarm, indicating that the water tank is in normal condition. When the water level in the tank drops below the probe 61, the water level sensor 6 triggers an alarm, indicating that the water tank needs to be refilled. If automatic refilling fails, the driver needs to manually refill the water. The water level sensor 6 is integrated into the water tank cover, making it easy to manufacture and inexpensive.

Claims

1. A water tank cover, comprising a cover body and a sealing plug disposed on the inner side of the cover body, characterized in that: It also includes a water level sensor, which includes a probe and a signal wire. One end of the signal wire is connected to the probe, and the other end of the signal wire passes through a sealing plug and a cover in sequence.

2. A water tank cover according to claim 1, characterized in that: The inner side of the cover is provided with a sealing gasket that fits tightly against it.

3. A water tank cover according to claim 1, characterized in that: A positive pressure valve assembly is provided between the cover and the sealing plug.

4. A water tank cover according to claim 3, characterized in that: The positive pressure valve assembly includes a lug and a spring fitted over the lug. One end of the lug is movably connected to the cover, and the outer wall of the other end of the lug is provided with an annular plate. One end of the spring abuts against the annular plate, and the other end of the spring abuts against the cover. The annular plate abuts against the sealing plug, and the signal wire passes through the lug.

5. A water tank cover according to claim 4, characterized in that: The lug is cylindrical, and one end of the lug is connected to the cover by a rivet. One end of the rivet is fixed to the cover, and the other end of the rivet is slidably connected to the lug.

6. A water tank cover according to claim 5, characterized in that: The rivet has a through hole for signal wires to pass through, and the through hole is filled with sealant.

7. A water tank cover according to claim 4, characterized in that: The sealing plug includes a limiting part, a conical part at the bottom of the limiting part, and a connecting part at the bottom of the conical part. The limiting part is provided with a limiting groove, the annular piece is provided in the limiting groove, and the connecting part is provided with a sealing structure for sealing the signal wire.

8. A water tank cover according to claim 7, characterized in that: The sealing structure includes a nut sleeve threadedly connected to the connecting part and a sealing ring pressed against the end of the connecting part by the nut sleeve, and the signal wire passes through the nut sleeve and the sealing ring.

9. A water tank cover according to claim 7, characterized in that: The sealing plug has a water supply channel inside, and the conical part has a water supply hole connected to the water supply channel. The conical part is covered with a conical sleeve, which covers the water supply hole.

10. A water tank cover according to claim 1, characterized in that: The signal wire is connected to the control line of the alarm.

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