Water pressure sensor

Abstract

This utility model discloses a water pressure sensor, including a housing with a protective pad fixedly connected to its outer wall, and a protective shell fixedly connected to the outer wall of the protective pad. A water pressure sensor is fixedly connected to the middle of the upper side wall of the housing, and a one-way valve is fixedly connected to the outer side wall near the upper side. The outer side wall of the protective shell has a plurality of energy-absorbing holes evenly distributed, and the upper side wall has a ring of vent holes, and a protective top is fixedly connected to it via connecting ribs. A dustproof net is fixedly connected to the outer side wall of the protective shell, covering the vent holes. A ring of vent pipes is provided inside the protective pad, communicating with the vent hole of the one-way valve. With the above structure, the water pressure sensor of this utility model can effectively prevent false sensing, ensuring rapid and accurate triggering of the window-breaking device when a vehicle falls into water, thus protecting the safety of the occupants.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to water pressure sensors. Background Technology

[0002] With the continuous development of automotive safety technology, emergency escape systems after a vehicle falls into water have become an important area of ​​safety research. As a key triggering component in such systems, the reliability, response speed, and anti-interference capability of water pressure sensors directly affect the safety of occupants. An ideal water pressure sensor should be able to quickly and accurately detect changes in water level after the vehicle enters the water and promptly trigger window breaking or unlocking mechanisms, buying precious escape time for occupants.

[0003] In existing technologies, water pressure sensing devices mostly use directly exposed or simply encapsulated water pressure sensors for water level detection. This type of design has significant drawbacks: First, the sensors are susceptible to external environmental interference, such as splashes from vehicles, rainwater, or road surface water, which can cause false triggering and severely affect system reliability. Second, the lack of effective mechanical protection and buffer structures makes the sensors easily damaged in the event of a vehicle collision, leading to the failure of emergency functions. Third, most devices do not consider venting and sealing, allowing air to escape smoothly during water level rise, or allowing external water to seep in, resulting in delayed or even failed water pressure detection, delaying escape opportunities. Therefore, there is an urgent need for a water pressure sensor with high anti-interference capabilities, good protection, and accurate detection capabilities to overcome the shortcomings of existing technologies in terms of reliability, safety, and environmental adaptability. Utility Model Content

[0004] The purpose of this invention is to provide a water pressure sensor that can overcome the shortcomings of the prior art.

[0005] To achieve the above objectives, a water pressure sensor is provided, including a housing, a protective pad fixedly connected to the outer wall of the housing, a protective shell fixedly connected to the outer wall of the protective pad, a water pressure sensor fixedly connected to the middle of the upper side wall of the housing, and a one-way valve fixedly connected to the outer side wall of the housing and close to the upper side.

[0006] The outer side wall of the protective shell is evenly provided with a number of energy-absorbing holes, the upper side wall of the protective shell is provided with a ring of air outlet holes, the upper side wall of the protective shell is fixedly connected with a number of connecting ribs, and the upper end of the connecting ribs is fixedly connected with a protective top.

[0007] According to the water pressure sensor, a dustproof net is fixedly connected to the outer wall of the protective shell. The dustproof net completely covers a ring of air vents to prevent external dust from entering the air vents.

[0008] According to the water pressure sensor, the protective pad is provided with a ring of air vent pipes inside. The vent hole on the outer wall of the one-way valve is connected to the vent hole through the air vent pipe. As the water level inside the enclosure gradually rises, the air inside the enclosure is gradually discharged outward through the vent hole, air vent pipe and vent hole in the one-way valve. External water flow and air cannot enter the enclosure through the vent hole, thus ensuring the accuracy of water pressure sensing.

[0009] According to the water pressure sensor, the middle part of the connecting rib bends toward the water pressure sensor, and the middle part of the connecting rib absorbs energy and bends inward after being pressed.

[0010] According to the aforementioned water pressure sensor, the protective shell, connecting ribs, and protective top are integrally molded, improving the overall structural strength of the protective shell. It is lightweight, impact-resistant, and has good toughness, achieving weight reduction while ensuring safety compared to ordinary steel. The aluminum alloy energy-absorbing box absorbs energy during a collision due to its excellent plastic deformation capacity.

[0011] According to the water pressure sensor, the protective shell, connecting ribs, and protective top are all made of aluminum alloy.

[0012] According to the water pressure sensor, the protective pad is made of elastic rubber material, which can effectively protect the cover.

[0013] According to the water pressure sensor, the protective top is located directly above the water pressure sensor and is used to protect the water pressure sensor.

[0014] This utility model has the following beneficial effects:

[0015] 1. Compared with existing technologies, this invention, through its unique cover structure, built-in one-way valve, and dustproof net design, can effectively distinguish between normal vehicle wading, rain splashing, and actual water-falling accidents. The one-way valve ensures that air inside the cover can be smoothly discharged while external liquids cannot enter, and the dustproof net prevents impurities from clogging the air passage. This structure fundamentally avoids false water pressure signals caused by environmental water accumulation or water splashing during driving, greatly improving the reliability and adaptability of the sensor.

[0016] 2. Compared with existing technologies, this system employs a multi-layered protective design. The outer protective shell and energy-absorbing holes effectively absorb and disperse collision energy, while the internal elastic protective pads buffer vibrations. The bent connecting ribs further dissipate energy through deformation under pressure. This comprehensive protection system significantly enhances the survivability of the water pressure sensor under extreme conditions such as vehicle collisions, ensuring that the emergency escape function is not compromised at critical moments. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the structure of the water pressure sensor of this utility model;

[0019] Figure 2 This is a front view of the water pressure sensor of this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of the water pressure sensor of this utility model;

[0021] Figure 4 This is a top view schematic diagram of the water pressure sensor of this utility model.

[0022] Legend:

[0023] 1. Protective shell; 101. Energy absorption hole; 102. Connecting rib; 103. Protective top; 104. Dustproof net; 105. Vent; 2. Protective pad; 201. Vent pipe; 3. Cover; 4. Water pressure sensor; 5. One-way valve. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 The water pressure sensor of this utility model includes a cover 3, a protective pad 2 fixedly connected to the outer wall of the cover 3, and a protective shell 1 fixedly connected to the outer wall of the protective pad 2. This multi-layer structure design not only provides physical protection, but also effectively absorbs external impacts through the elastic rubber material properties of the protective pad 2, protecting the internal components from damage. The protective shell 1 is made of aluminum alloy material, which has the characteristics of light weight, strong impact resistance and good toughness, and can achieve lightweight while ensuring safety performance. A number of energy-absorbing holes 101 are evenly arranged on the outer wall of the protective shell 1. These energy-absorbing holes 101 can absorb and disperse energy during vehicle collision, further improving the impact resistance of the device.

[0026] A ring of vent holes 105 is provided on the upper side wall of the protective shell 1. These vent holes 105 are connected to one-way valves 5 inside the housing 3. The one-way valves 5 are fixedly connected to the outer side wall of the housing 3, near the upper side. This design allows air inside the housing 3 to be discharged through the one-way valves 5 and vent holes 105 when the water level rises, while preventing external water flow and air from entering the housing 3, ensuring the accuracy of water pressure sensing. Several connecting ribs 102 are also fixedly connected to the upper side wall of the protective shell 1. Protective tops 103 are fixedly connected to the upper ends of these connecting ribs 102. The middle part of the connecting ribs 102 bends towards the water pressure sensor 4. This design allows the connecting ribs 102 to absorb energy and bend under pressure, further protecting the water pressure sensor 4 from external impacts. The protective top 103 is located directly above the water pressure sensor 4, providing additional protection for the water pressure sensor 4.

[0027] The water pressure sensor 4 is fixedly connected to the middle of the upper side wall of the cover 3 and is a key sensing component of the water pressure sensor. When the vehicle falls into the water, water gradually fills the cover 14, and the water level gradually rises. When the water level rises to a preset height and contacts the water pressure sensor 15, the water pressure sensor 15 receives a signal and sends an electrical signal to the control module 8, triggering the subsequent window-breaking action. To further improve the protective performance of the device, a dustproof net 104 is fixedly connected to the outer side wall of the protective shell 1. This dustproof net 104 completely covers a ring of vent holes 105, effectively preventing external dust from entering the vent holes 105 and ensuring the long-term stable operation of the device.

[0028] Inside the protective pad 2, a ring of vent pipes 201 is installed. The vent hole on the outer wall of the one-way valve 5 is connected to the vent hole 105 through the vent pipes 201. This design allows air inside the cover 3 to be smoothly discharged during the rise of water level, while preventing external water flow and air from entering the cover 3, ensuring the accuracy of water pressure sensing. Through this structural design, the entire device achieves a rapid and accurate response when a vehicle falls into water, while the multi-layered protective structure ensures the reliability and durability of the device.

[0029] In practical applications, the water pressure sensor is fixed at a designated location on the vehicle, such as near the door or window. When the vehicle falls into the water, water gradually fills the enclosure 3, and the water level gradually rises. As the water level rises, air inside the enclosure 3 is discharged through the one-way valve 5 and the vent 105, while external water and air cannot enter the enclosure 3. When the water level rises to a preset height and contacts the water pressure sensor 4, the water pressure sensor 4 receives a signal and sends an electrical signal to the control module 8. The control module 8 then controls the detonation structure 10 to activate, realizing the window breaking process. The entire process is highly automated, responds quickly, and effectively ensures the safety of the occupants.

[0030] Unless otherwise specified, the constituent units of this utility model are obtained from conventional commercial channels or manufactured by conventional methods. Their specific structure, working principle, and possible control methods and spatial arrangement methods can adopt conventional choices in the field and should not be regarded as the innovation of this utility model. This is understandable to those skilled in the art, and this utility model patent will not be further elaborated in detail.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model 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 utility model.

Claims

1. A water pressure sensor, characterized in that, Includes a cover (3), a protective pad (2) is fixedly connected to the outer side wall of the cover (3), a protective shell (1) is fixedly connected to the outer side wall of the protective pad (2), a water pressure sensor (4) is fixedly connected to the middle of the upper side wall of the cover (3), and a one-way valve (5) is fixedly connected to the outer side wall of the cover (3) and close to the upper side. The outer side wall of the protective shell (1) is uniformly provided with a number of energy-absorbing holes (101), the upper side wall of the protective shell (1) is provided with a ring of air outlet holes (105), the upper side wall of the protective shell (1) is fixedly connected with a number of connecting ribs (102), and the upper end of the connecting ribs (102) is fixedly connected with a protective top (103).

2. The water pressure sensor according to claim 1, characterized in that, The outer wall of the protective shell (1) is fixedly connected to a dustproof net (104), which covers a ring of air vents (105).

3. The water pressure sensor according to claim 1, characterized in that, The protective pad (2) has a ring of air outlet pipe (201) inside, and the exhaust hole on the outer wall of the one-way valve (5) is connected to the air outlet (105) through the air outlet pipe (201).

4. The water pressure sensor according to claim 1, characterized in that, The middle part of the connecting rib (102) bends toward the water pressure sensor (4).

5. The water pressure sensor according to claim 1, characterized in that, The protective shell (1), connecting rib (102) and protective top (103) are integrally formed.

6. The water pressure sensor according to claim 1, characterized in that, The protective shell (1), connecting rib (102) and protective top (103) are all made of aluminum alloy.

7. The water pressure sensor according to claim 1, characterized in that, The protective pad (2) is made of elastic rubber material.

8. The water pressure sensor according to claim 1, characterized in that, The protective top (103) is located directly above the water pressure sensor (4).

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