Dual gate water pressure relief valve
By installing an openable angled door and transmission components on the pressure relief valve, combined with a drive motor, waterproof protection of the pressure relief valve is achieved, solving the problem of water ingress in flooded sections of the road and improving waterproof performance and ventilation stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI MUMA PLASTIC HARDWARE CO LTD
- Filing Date
- 2025-07-03
- Publication Date
- 2026-07-21
AI Technical Summary
Existing pressure relief valves are prone to water ingress when vehicles are driving through flooded areas, affecting their use, and they cannot effectively prevent dust, noise, vibration, and harshness (NVH) problems.
It adopts a double-door waterproof pressure relief valve structure, including a cover, front and rear angled doors, a transmission assembly and a drive motor. The transmission assembly and drive motor drive the angled doors to rotate, thereby achieving waterproof protection for the pressure relief valve. The angled doors will automatically close when the vehicle is in a flooded section to prevent water from entering.
It effectively prevents water from entering the pressure relief valve, maintains ventilation stability, improves waterproof performance, reduces dust ingress, and improves the vehicle's NVH performance.
Smart Images
Figure CN224533591U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of automotive pressure relief valve technology, and more particularly to a double-door waterproof pressure relief valve. Background Technology
[0002] The vehicle cabin is a relatively enclosed space. To control the pressure inside the cabin, vents and pressure relief valves are required. The pressure relief valves can open or close the vents as needed to balance the pressure inside the vehicle. With increasing demands for vehicle quality, consumers have higher requirements for vehicles, especially electric vehicles, regarding noise, vibration and harshness (NVH), waterproofing (including wading performance), and reducing dust ingress.
[0003] Currently, commonly used pressure relief valves are mechanical passive venting valves, consisting of a plastic valve body and a rubber vane. The vane is hinged to the valve body. When the air pressure inside the vehicle is greater than the air pressure outside the vehicle and reaches a critical value, the vane is pushed open to release air. When the air pressure inside and outside the vehicle reaches equilibrium, the vane falls back down and closes the valve body. However, when a car passes through a flooded section of road, water can enter the vehicle through the pressure relief valve, affecting its operation. Therefore, it is necessary to provide a new pressure relief valve structure that meets the need for waterproofing. Utility Model Content
[0004] To address the problem that traditional pressure relief valves cannot provide waterproofing, this utility model provides a double-door waterproof pressure relief valve, comprising: a cover, a front angled door, a rear angled door, a transmission assembly, a pressure relief valve assembly, and a drive motor; The cover is suitable for being installed on the outer side wall of a car and for communicating with the interior of the car. The cover has a front pressure relief port and a rear pressure relief port on opposite sides. The front angled door is rotatably mounted on the cover and can be rotated to seal the front pressure relief port. The rear angled door is rotatably mounted on the cover and can be rotated to seal the rear pressure relief port. The transmission assembly is located inside the cover and is connected to the front angled door and the rear angled door respectively. The pressure relief valve assembly is positioned at the opening of the cover, corresponding to the front angled door and the rear angled door; The drive motor is housed within the cover and connected to the vehicle's hydraulic sensors to drive the transmission assembly.
[0005] In one possible implementation, the front pressure relief port corresponds to the rear pressure relief port.
[0006] In one possible implementation, the transmission assembly includes: an eccentric wheel, a first connecting rod, and a second connecting rod; The eccentric wheel is connected to the motor drive, which drives the eccentric wheel to rotate circumferentially; The two ends of the first connecting rod are respectively connected to the eccentric wheel and the front angled door. The drive motor drives the first connecting rod to move the front angled door to a position away from the front pressure relief port. The two ends of the second connecting rod are respectively connected to the eccentric wheel and the rear angled door. The drive motor drives the second connecting rod to move the rear angled door to a position away from the rear pressure relief port.
[0007] In one possible implementation, the transmission assembly further includes a third link and a fourth link; One end of the third link is rotatably connected to one end of the first link, and the other end is rotatably connected to the front pressure relief port of the cover. The front angled door is mounted on the third link, and the plate surface is attached to and fixedly connected to the third link. One end of the fourth link is rotatably connected to one end of the first link, and the other end is rotatably connected to the rear pressure relief port of the cover. The rear angled door is mounted on the fourth link, and the plate surface is attached to and fixedly connected to the fourth link.
[0008] In one possible implementation, the cover is snapped into the pressure relief valve assembly; The pressure relief valve assembly has a snap-fit groove at its edge and a snap-fit protrusion at its edge. The snap-fit protrusion matches the snap-fit groove, and the snap-fit protrusion of the cover is embedded in the snap-fit groove of the pressure relief valve assembly.
[0009] In one possible implementation, the cover is sealed to the vehicle's body sheet metal with a soft rubber seal.
[0010] In one possible implementation, the cover has the front pressure relief port and the rear pressure relief port arranged at opposite sides at an angle.
[0011] In one possible implementation, the unfolded front and rear angled doors form a rectangular structure with the cross-section of the cover.
[0012] One possible implementation also includes: a speed reducer and a synchronous drive shaft; The reducer and the synchronous drive shaft are disposed within the cover body; One end of the synchronous transmission shaft is connected to the center of the eccentric wheel plate, and the other end is connected to the reducer; The drive motor is connected to the synchronous transmission shaft via the reducer, driving the eccentric wheel to rotate around the synchronous transmission shaft in the circumferential direction.
[0013] One possible implementation also includes: a water level sensor; The water level sensor is suitable for installation at the water level sensing location on a vehicle. The water level sensor is communicatively connected to the drive motor and controls the start and stop of the drive motor.
[0014] The beneficial effects of the double-door waterproof pressure relief valve in this application embodiment are as follows: By combining the pressure relief valve with an openable and closable angled door, waterproof protection of the pressure relief valve is achieved, and the relatively openable front and rear angled doors ensure the stability of ventilation. Specifically, the pressure relief valve has a cover with a central hole, and pressure relief ports are provided on opposite sides of the cover. Rotatable angled doors are provided on the pressure relief ports. A transmission component and a drive motor are installed inside the cover to rotate the two angled doors, thereby opening the angled doors under normal conditions. When passing through a water-filled section of road, the two relatively positioned angled doors are closed, ensuring that water does not enter the pressure relief valve while the angled doors are in normal use.
[0015] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0016] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.
[0017] Figure 1 A cross-sectional view of the dual-door waterproof pressure relief valve according to an embodiment of this application is shown. Figure 2 A schematic diagram of the main structure of the double-door waterproof pressure relief valve according to an embodiment of this application is shown; Figure 3 The diagram shows a top view of the double-door waterproof pressure relief valve according to an embodiment of this application. Detailed Implementation
[0018] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0019] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or 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 limitations on this utility model.
[0020] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0021] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0022] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.
[0023] The vehicle cabin is a relatively enclosed space. To control the pressure inside the cabin, vents and pressure relief valves are required. These valves open or close the vents as needed to balance the internal pressure. With increasing demands for vehicle quality, consumers, especially with electric vehicles, have higher requirements for noise, vibration, and harshness (NVH), waterproofing (including wading performance), and minimizing dust ingress. Currently, commonly used pressure relief valves are mechanical passive venting systems, consisting of a plastic valve body and a rubber vane. The vane is hinged to the valve body. When the internal air pressure exceeds the external air pressure and reaches a critical value, the vane is pushed open to release air. When the internal and external air pressures reach equilibrium, the vane falls back down, closing the valve body. However, when a car travels through flooded areas, water can enter the vehicle through the pressure relief valve, affecting its operation. Therefore, it is necessary to provide a new pressure relief valve structure that addresses the need for waterproofing. Figure 1 A schematic diagram of the main structure according to an embodiment of this application is shown. Figure 1As shown, the dual-door waterproof pressure relief valve of this application embodiment includes: a cover 100, a front angled door 222, a rear angled door 212, a transmission assembly, a pressure relief valve assembly, and a drive motor; the cover 100 is suitable for covering the outer wall of a car and for communicating with the interior of the car, and a front pressure relief port and a rear pressure relief port are respectively opened on opposite sides of the cover 100; the front angled door 222 is rotatably mounted on the cover 100 and can be rotated to seal the front pressure relief port; the rear angled door 212 is rotatably mounted on the cover 100 and can be rotated to seal the rear pressure relief port; the transmission assembly is disposed inside the cover 100 and is connected to the front angled door 222 and the rear angled door 212 respectively; the pressure relief valve assembly is positioned at the opening of the cover 100, corresponding to the front angled door 222 and the rear angled door 212; the drive motor is disposed inside the cover 100 and is connected to the car's hydraulic sensor to drive the transmission assembly.
[0024] In this specific embodiment, by combining the openable angled doors with the pressure relief valve, waterproof protection for the pressure relief valve is achieved, and the relatively openable front angled door 222 and rear angled door 212 ensure stable ventilation. Specifically, a cover 100 with a central hole is provided on the pressure relief valve, and pressure relief ports are provided on opposite sides of the cover 100. Rotatable angled doors are provided on the pressure relief ports. By installing a transmission component and a drive motor inside the cover 100, the two angled doors are driven to rotate, thereby opening the angled doors in the normal state. When passing through a water-filled section, the two relatively arranged angled doors are closed, ensuring that water does not enter the pressure relief valve while the angled doors are in normal use.
[0025] In one specific embodiment, the front pressure relief port and the rear pressure relief port correspond to each other. These two corresponding angled doors can improve the pressure relief effect of the pressure relief valve and increase ventilation efficiency. Specifically, the front and rear pressure relief ports are aligned front and back to facilitate ventilation.
[0026] In one specific embodiment, the transmission assembly includes: an eccentric wheel 221, a first connecting rod 223, and a second connecting rod 224; the eccentric wheel 221 is driven by a motor to rotate circumferentially; the two ends of the first connecting rod 223 are respectively connected to the eccentric wheel 221 and the front angled door 222; the motor drives the first connecting rod 223 to move the front angled door 222 away from the front pressure relief port; the two ends of the second connecting rod 224 are respectively connected to the eccentric wheel 221 and the rear angled door 212; the motor drives the second connecting rod 224 to move the rear angled door away from the rear pressure relief port.
[0027] In this specific embodiment, the drive motor is connected to the first connecting rod 223 via the eccentric wheel 221, and both ends of the first connecting rod 223 are respectively connected to the eccentric wheel 221 and the side of the front angled door 222 away from the rotatable side. The drive motor drives the first connecting rod 223 to rotate circumferentially, thereby realizing the rotation of the front angled door 222. In a specific embodiment, the transmission assembly further includes a second connecting rod 224, one end of which is rotatably connected to one end of the first connecting rod 223, and the other end is rotatably connected to the front pressure relief port of the cover 100. The front angled door 222 is mounted on the second connecting rod 224, and the plate surface is attached to and fixedly connected to the second connecting rod 224. Both the second link 224 and the first link 223 are elongated rod-shaped structures. The front angled door 222 is attached to the second link 224, and the two ends of the second link 224 are rotatably connected to the front pressure relief port and the first link 223, respectively. The drive motor drives the first link 223 to rotate circumferentially, and the first link 223 drives the second link 224 to rotate circumferentially around the position where the second link 224 is rotatably connected to the front pressure relief port, thereby realizing the opening and closing of the front angled door 222 relative to the front pressure relief port. Through the cooperation of the first link 223, the second link 224 and the eccentric wheel 221, the driving force can be effectively transmitted to ensure that the front angled door 222 accurately opens and closes the front pressure relief port.
[0028] In one specific embodiment, the transmission assembly further includes a third link 211 and a fourth link 213. One end of the third link 211 is rotatably connected to one end of the first link 223, and the other end is rotatably connected to the front pressure relief port of the cover 100. The front angled door 222 is disposed on the third link 211, and the plate surface is attached to and fixedly connected to the third link 211. One end of the fourth link 213 is rotatably connected to one end of the first link 223, and the other end is rotatably connected to the rear pressure relief port of the cover 100. The rear angled door 212 is disposed on the fourth link 213, and the plate surface is attached to and fixedly connected to the fourth link 213.
[0029] In this specific embodiment, the drive motor is connected to the third link 211 via the eccentric wheel 221, and the two ends of the third link 211 are respectively connected to the eccentric wheel 221 and the three rotatable sides of the rear angled door 212. The drive motor drives the third link 211 to rotate circumferentially, thereby realizing the rotation of the rear angled door 212. In the three specific embodiments, the transmission assembly further includes a fourth link 213, three ends of which are rotatably connected to three ends of the third link 211, and the other three ends are rotatably connected to the rear pressure relief port of the cover 100. The rear angled door 212 is mounted on the fourth link 213, and the plate surface is attached to and fixedly connected to the fourth link 213. Both the fourth link 213 and the third link 211 are long, rod-shaped structures. The rear angled door 212 is fitted onto the fourth link 213, and the two ends of the fourth link 213 are rotatably connected to the rear pressure relief port and the third link 211, respectively. The drive motor drives the third link 211 to rotate circumferentially, and the third link 211 drives the fourth link 213 to rotate circumferentially around the position where the fourth link 213 is rotatably connected to the rear pressure relief port, thereby realizing the opening and closing of the rear angled door 212 relative to the rear pressure relief port. Through the cooperation of the third link 211, the fourth link 213, and the eccentric wheel 221, the driving force can be effectively transmitted, ensuring that the rear angled door 212 accurately opens and closes the rear pressure relief port.
[0030] In one specific embodiment, the cover 100 is snapped into the pressure relief valve assembly. The pressure relief valve assembly has a snap-in groove at its edge, and the cover 100 has a snap-in protrusion at its edge. The snap-in protrusion matches the snap-in groove, and the snap-in protrusion of the cover 100 is embedded in the snap-in groove of the pressure relief valve assembly. This completes the connection between the cover 100 and the pressure relief valve assembly. The pressure relief valve assembly includes a pressure relief valve frame 310 and blades 320. Multiple blades 320 are respectively hooked onto the pressure relief holes of the pressure relief valve frame 310. When the car door is closed, gas is forced open by the blades 320 and discharged. Both the pressure relief valve frame 310 and the blades 320 can be implemented using existing technology, which will not be elaborated further here.
[0031] In one specific embodiment, the cover 100 is sealed to the car body sheet metal with a soft rubber seal, which further improves the sealing performance and prevents dust, polluted air and water from outside the car from entering the car through the connection between the cover 100 and the car body sheet metal.
[0032] In one specific embodiment, the cover 100 is inclined on both sides with a front pressure relief port and a rear pressure relief port, which can greatly improve the overall space utilization. Specifically, the cross-section of the cover 100 is an isosceles trapezoidal structure, and the two angled doors are rotatably set on the two inclined surfaces of the cover 100. After the angled doors are rotated, they will not occupy additional space.
[0033] In one specific embodiment, the unfolded front angled door 222 and rear angled door 212 have a rectangular cross-section with the cover 100, so that they do not occupy space when rotated. Specifically, the cover 100 is a boss structure with an isosceles trapezoidal cross-section, and the opening angle of the angled doors matches the angle between the waist and the bottom edge of the cover 100, so that the angled doors do not occupy additional space when unfolded.
[0034] In one specific embodiment, it further includes: a reducer and a synchronous drive shaft, which are disposed inside the cover 100. One end of the synchronous drive shaft is connected to the center position of the plate surface of the eccentric wheel 221, and the other end is connected to the reducer. The drive motor is connected to the synchronous drive shaft through the reducer, thereby driving the eccentric wheel 221 to rotate around the circumferential direction of the synchronous drive shaft.
[0035] In one specific embodiment, it further includes: a water level sensor, which is suitable for being installed at the water level sensing location of the vehicle, and the water level sensor is communicatively connected to the drive motor to control the start and stop of the drive motor.
[0036] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A double-door waterproof pressure relief valve, characterized in that, include: Cover, front angled door, rear angled door, transmission assembly, pressure relief valve assembly, and drive motor; The cover is suitable for being installed on the outer side wall of a car and for communicating with the interior of the car. The cover has a front pressure relief port and a rear pressure relief port on opposite sides. The front angled door is rotatably mounted on the cover and can be rotated to seal the front pressure relief port. The rear angled door is rotatably mounted on the cover and can be rotated to seal the rear pressure relief port. The transmission assembly is located inside the cover and is connected to the front angled door and the rear angled door respectively. The pressure relief valve assembly is positioned at the opening of the cover, corresponding to the front angled door and the rear angled door; The drive motor is housed within the cover and connected to the vehicle's hydraulic sensors to drive the transmission assembly.
2. The double-door waterproof pressure relief valve according to claim 1, characterized in that, The front pressure relief port corresponds to the rear pressure relief port.
3. The double-door waterproof pressure relief valve according to claim 2, characterized in that, The transmission assembly includes: an eccentric wheel, a first connecting rod, and a second connecting rod; The eccentric wheel is connected to the motor drive, which drives the eccentric wheel to rotate circumferentially; The two ends of the first connecting rod are respectively connected to the eccentric wheel and the front angled door. The drive motor drives the first connecting rod to move the front angled door to a position away from the front pressure relief port. The two ends of the second connecting rod are respectively connected to the eccentric wheel and the rear angled door. The drive motor drives the second connecting rod to move the rear angled door to a position away from the rear pressure relief port.
4. The double-door waterproof pressure relief valve according to claim 3, characterized in that, The transmission assembly also includes: a third link and a fourth link; One end of the third link is rotatably connected to one end of the first link, and the other end is rotatably connected to the front pressure relief port of the cover. The front angled door is mounted on the third link, and the plate surface is attached to and fixedly connected to the third link. One end of the fourth link is rotatably connected to one end of the first link, and the other end is rotatably connected to the rear pressure relief port of the cover. The rear angled door is mounted on the fourth link, and the plate surface is attached to and fixedly connected to the fourth link.
5. The double-door waterproof pressure relief valve according to claim 4, characterized in that, The cover is snapped into the pressure relief valve assembly; The pressure relief valve assembly has a snap-fit groove at its edge and a snap-fit protrusion at its edge. The snap-fit protrusion matches the snap-fit groove, and the snap-fit protrusion of the cover is embedded in the snap-fit groove of the pressure relief valve assembly.
6. The double-door waterproof pressure relief valve according to claim 5, characterized in that, The cover is sealed to the car body sheet metal with soft rubber.
7. The double-door waterproof pressure relief valve according to claim 1, characterized in that, The cover has a front pressure relief port and a rear pressure relief port, which are inclined on opposite sides.
8. The double-door waterproof pressure relief valve according to claim 7, characterized in that, The unfolded front and rear angled doors, together with the cross-section of the cover, form a rectangular structure.
9. The double-door waterproof pressure relief valve according to claim 3, characterized in that, Also includes: Reducer and synchronous drive shaft; The reducer and the synchronous drive shaft are disposed within the cover body; One end of the synchronous transmission shaft is connected to the center of the eccentric wheel plate, and the other end is connected to the reducer; The drive motor is connected to the synchronous transmission shaft via the reducer, driving the eccentric wheel to rotate around the synchronous transmission shaft in the circumferential direction.
10. The double-door waterproof pressure relief valve according to claim 1, characterized in that, Also includes: Water level sensor; The water level sensor is suitable for installation at the water level sensing location on a vehicle. The water level sensor is communicatively connected to the drive motor and controls the start and stop of the drive motor.