Vehicle pressure relief device and vehicle

Abstract

The utility model discloses a vehicle pressure relief device and a vehicle. The pressure relief device for the vehicle comprises a shell and a sound absorption and pressure relief assembly arranged in the shell. The sound absorption and pressure relief assembly comprises a first sound absorption part and a second sound absorption part which are arranged in parallel; the first sound absorption piece is provided with a protruding structure facing the second sound absorption piece, and the second sound absorption piece is provided with a hollow part matched with the protruding structure. The first sound absorption part can move, so that an annular airflow channel with the variable sectional area is formed between the first sound absorption part and the second sound absorption part.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically, relates to a vehicle pressure relief device and a vehicle. Background Art

[0002] When the cab door is closed or the vehicle is driving, the pressure difference between the inside and outside of the cab or the vibration of the internal structure often causes pressure fluctuations, affecting the riding experience in the cab. In addition, external noise may also enter the cab through certain channels, interfering with the driver's normal driving.

[0003] Therefore, developing a vehicle pressure relief device that can adaptively adjust the air pressure inside and outside the cab and reduce noise interference is of great significance to improving the overall performance of the car. Utility Model Content

[0004] The purpose of the present application is to provide a new technical solution for a vehicle pressure relief device and a vehicle.

[0005] According to a first aspect of the present application, the present application provides a vehicle pressure relief device, the vehicle pressure relief device comprising a shell and a sound absorbing pressure relief assembly disposed inside the shell;

[0006] The sound absorbing and pressure relief assembly comprises a first sound absorbing member and a second sound absorbing member arranged in parallel;

[0007] The first sound absorbing member has a protruding structure facing the second sound absorbing member, and the second sound absorbing member is provided with a hollow portion matching with the protruding structure;

[0008] The first sound absorbing member is movable, so that an annular air flow channel with a variable cross-sectional area is formed between the first sound absorbing member and the second sound absorbing member.

[0009] Optionally, the first sound absorbing member can be moved to abut against the second sound absorbing member, and the protruding structure is used to close the hollow portion to close the annular airflow channel.

[0010] Optionally, the vehicle pressure relief device includes a driving member, and the driving member is arranged on the housing;

[0011] The driving member is connected to the first sound absorbing member, and is used to drive the first sound absorbing member to move toward the second sound absorbing member, thereby changing the gap between the first sound absorbing member and the second sound absorbing member.

[0012] Optionally, the first sound absorbing member is disposed on a pad, and the pad is located inside the shell;

[0013] An elastic element is arranged between the pad and the shell.

[0014] Optionally, the shell is cylindrical, and comprises an upper cover and a lower cover that are buckled with each other;

[0015] The second sound absorbing member is arranged on the inner wall of the lower cover;

[0016] The lower cover is connected to the rear panel of the vehicle's cab.

[0017] Optionally, the protrusion structure is an arc-shaped protrusion, and a through hole is provided in the middle of the protrusion structure;

[0018] The hollow portion is a circular through hole arranged in the middle of the second sound absorbing member.

[0019] Optionally, the driving member is arranged on the outer wall of the upper cover;

[0020] One end of the elastic element is connected to the upper cover, and the other end is connected to the pad.

[0021] Optionally, the lower cover comprises a first circular ring structure and a second circular ring structure which are connected in sequence, the first circular ring structure is arranged close to the upper cover, and the second circular ring structure is arranged far away from the upper cover;

[0022] The first circular ring structure is communicated with the second circular ring structure, and an exhaust flap plate is provided at the connection position between the first circular ring structure and the second circular ring structure.

[0023] Optionally, when an annular airflow channel is formed between the first sound absorbing member and the second sound absorbing member, the air flow in the cab can cause the exhaust flap to be in an open state;

[0024] Wherein, the exhaust flap plate is composed of a plurality of exhaust plates, and the plurality of exhaust plates are surrounded in a circle.

[0025] Optionally, the driving member is a solenoid valve, and the pad is a metal plate that cooperates with the solenoid valve;

[0026] After the solenoid valve is energized, a repulsive force can be generated between the solenoid valve and the backing plate, so as to drive the backing plate to drive the first sound absorbing member to move toward the second sound absorbing member.

[0027] Optionally, the elastic element is a wave spring.

[0028] Optionally, the vehicle pressure relief device further includes an exhaust structure, and the exhaust structure is arranged on the lower cover;

[0029] The exhaust structure is provided with an exhaust port, and when the exhaust flap is opened, the annular airflow channel can be communicated with the exhaust port.

[0030] Optionally, the exhaust port is circular, and a fence structure is arranged inside the exhaust port.

[0031] Optionally, the exhaust structure is fixed to the cab rear panel and the lower cover by fasteners.

[0032] Optionally, the vehicle pressure relief device further includes a controller and a pressure sensor, and the controller is connected to the pressure sensor;

[0033] The controller is connected to a control system of the vehicle, the pressure sensor is arranged in the cab, and the controller is used to control the driving member to drive the first sound absorbing member to move according to the air pressure in the cab obtained by the pressure sensor, so as to adjust the cross-sectional area of ​​the annular airflow channel.

[0034] Optionally, the first sound absorbing member and / or the second sound absorbing member is sound absorbing cotton.

[0035] According to a second aspect of the present application, the present application provides a vehicle, the vehicle comprising:

[0036] the vehicle body; and

[0037] A vehicle pressure relief device as described in the first aspect.

[0038] One beneficial effect of the embodiments of the present application is:

[0039] According to the vehicle pressure relief device proposed in the embodiment of the present application, a first sound absorbing member and a second sound absorbing member of a special structure are arranged side by side inside the shell thereof, and the first sound absorbing member can move relative to the second sound absorbing member, and can form an annular airflow channel with a variable cross-sectional area between the two, so as to adaptively adjust the airflow inside and outside the cab, balance the air pressure, and improve the comfort inside the cab; and, when the noise outside the cab tries to invade the cab through this annular airflow channel, the two sound absorbing members can efficiently absorb the noise, reducing the interference of external noise on the cab, thereby greatly improving the quietness and comfort of the cab, and improving the driving experience of the driver.

[0040] Other features and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the application and, together with the description, serve to explain the principles of the application.

[0042] Figure 1 An exploded view of the structure of the vehicle pressure relief device provided in an embodiment of the present application;

[0043] Figure 2 One of the cross-sectional views of the vehicle pressure relief device provided in the embodiment of the present application;

[0044] Figure 3 A schematic diagram of the structure of a vehicle pressure relief device provided in an embodiment of the present application;

[0045] Figure 4 A side view of a vehicle pressure relief device provided in an embodiment of the present application;

[0046] Figure 5 A second cross-sectional view of the vehicle pressure relief device provided in an embodiment of the present application;

[0047] Figure 6 One of the structural diagrams of the upper cover of the vehicle pressure relief device provided in an embodiment of the present application;

[0048] Figure 7 The second structural diagram of the upper cover of the vehicle pressure relief device provided in the embodiment of the present application;

[0049] Figure 8 One of the structural diagrams of the elastic element of the vehicle pressure relief device provided in the embodiment of the present application;

[0050] Fig. 9 The second structural diagram of the elastic element of the vehicle pressure relief device provided in the embodiment of the present application;

[0051] Fig.10 One of the structural diagrams of the first sound absorbing member of the vehicle pressure relief device provided in the embodiment of the present application;

[0052] Fig.11 A second structural diagram of the first sound absorbing member of the vehicle pressure relief device provided in an embodiment of the present application;

[0053] Fig.12 A structural diagram of a second sound absorbing member of a vehicle pressure relief device provided in an embodiment of the present application;

[0054] Fig.13 One of the structural diagrams of the lower cover of the vehicle pressure relief device provided in an embodiment of the present application;

[0055] Fig.14 The second structural diagram of the lower cover of the vehicle pressure relief device provided in the embodiment of the present application;

[0056] Fig.15 One of the structural diagrams of the exhaust structure of the vehicle pressure relief device provided in the embodiment of the present application;

[0057] Fig.16 This is a second structural diagram of the exhaust structure of the vehicle pressure relief device provided in an embodiment of the present application.

[0058] Description of reference numerals:

[0059] 1. Driving member; 2. Upper cover; 21. Buckle; 3. Elastic element; 4. Pad; 5. First sound absorbing member; 51. Protruding structure; 6. Second sound absorbing member; 61. Hollow portion; 7. Exhaust flap plate; 8. Lower cover; 81. First circular ring structure; 82. Second circular ring structure; 83. Bayonet; 9. Exhaust structure; 91. Exhaust port; 10. Fastener. DETAILED DESCRIPTION

[0060] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0061] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0062] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0063] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0064] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0065] The vehicle pressure relief device and the vehicle provided in the embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0066] According to one embodiment of the present application, a vehicle pressure relief device is provided. The vehicle pressure relief device can be applied to a vehicle. The vehicle pressure relief device can automatically open and close by the difference in internal and external air pressure to achieve the effect of balancing the air pressure inside and outside the cab. The present application is explained by taking the application of the vehicle pressure relief device to a truck cab as an example. The application of the vehicle pressure relief device in a truck cab is of great significance.

[0067] The vehicle pressure relief device provided in the embodiment of the present application is shown in Figures 1 to 5 As shown, it includes a shell and a sound absorbing and pressure relief component arranged inside the shell; the sound absorbing and pressure relief component includes a first sound absorbing member 5 and a second sound absorbing member 6 arranged in parallel; see Fig.10 and Fig.11 , the first sound absorbing member 5 has a protruding structure 51 facing the second sound absorbing member 6, see Fig.12The second sound absorbing member 6 is provided with a hollow portion 61 that matches the protruding structure 51; the first sound absorbing member 5 is movable, so that an annular air flow channel with a variable cross-sectional area is formed between the first sound absorbing member 5 and the second sound absorbing member 6.

[0068] The vehicle pressure relief device provided in the embodiment of the present application includes two parts: one is a shell, and the other is a sound-absorbing pressure relief component placed in the shell. The sound-absorbing pressure relief component is the core part of the entire vehicle pressure relief device, and is composed of a first sound-absorbing member 5 and a second sound-absorbing member 6 arranged in parallel, which work together to achieve the dual functions of pressure relief and noise reduction.

[0069] In particular, see Fig.10 and Fig.11 A special protruding structure 51 is designed on the surface of the first sound absorbing member 5 facing the second sound absorbing member 6. The design of this protruding structure 51 not only enhances the stability of the first sound absorbing member 5, but also provides a basis for forming an annular air flow channel. Fig.12 , and a hollow portion 61 is cleverly provided on the second sound absorbing member 6 to match the protruding structure 51. By using the protruding structure 51 and the hollow portion 61, such a design enables a close and flexible match between the two sound absorbing members.

[0070] The first sound absorbing member 5 is configured to be movable relative to the second sound absorbing member 6. This means that in different scenarios, the relative position between the first sound absorbing member 5 and the second sound absorbing member 6, or the gap between the first sound absorbing member 5 and the second sound absorbing member 6, will change, thereby forming an annular airflow channel with a variable cross-sectional area. This design not only ensures the smooth flow of the airflow channel, but also can adjust the cross-sectional area of ​​the airflow channel according to actual needs to cope with different airflow requirements.

[0071] See also Figure 5 , the protruding structure 51 can extend into the hollow portion 61, so as to construct an annular airflow channel. It is worth mentioning that as the protruding structure 51 extends into the hollow portion 61 to different degrees, the cross-sectional area of ​​the formed annular airflow channel will change accordingly. This flexible design enables the annular airflow channel to better adapt to different airflow requirements, ensuring that the airflow in the cab is always in a stable and smooth state.

[0072] For example, see Figure 5In the initial state, a certain distance is maintained between the first sound absorbing member 5 and the second sound absorbing member 6, and at this time, the top of the raised structure 51 of the first sound absorbing member 5 is just located on one side of the hollow portion 61 of the second sound absorbing member 6. As the first sound absorbing member 5 gradually approaches the second sound absorbing member 6, the raised structure 51 begins to gradually extend into the hollow portion 61, and the cooperation between the two becomes tighter. It is worth noting that according to the different degrees of the raised structure 51 extending into the hollow portion 61, the cross-sectional size of the formed annular airflow channel will also change accordingly. This design not only makes the airflow channel more flexible and adjustable, but also can form airflow channels of different cross-sectional sizes according to actual needs, so as to better adapt to different airflow and noise control needs.

[0073] In the vehicle pressure relief device provided in the embodiment of the present application, an annular airflow channel can be constructed between the first sound absorbing member 5 and the second sound absorbing member 6, which not only carries the important function of regulating the airflow, but also incorporates a noise control mechanism. Specifically, the annular airflow channel can be designed to form a 90° corner. This 90° turning design ensures unimpeded airflow exchange inside and outside the cab while maintaining a sufficient airflow channel area, providing a comfortable driving environment for the driver. More importantly, the 90° turn can also effectively reflect and isolate external noise, greatly reducing the intrusion of noise into the cab, and creating a quiet driving space for the driver.

[0074] When external noise tries to enter the cab of a car (such as a truck) through the annular airflow channel, it will encounter this 90° turn. Since sound will be reflected and attenuated when encountering a right-angle turn during propagation, this design can greatly reduce the penetration of noise and reduce the interference of noise inside the cab. At the same time, since the annular airflow channel itself has a sufficient area, even if there is this turn, it will not cause too much obstruction to the flow of air.

[0075] In other words, the uniqueness of the annular airflow channel provided in the embodiment of the present application lies in its 90° turning design. This design effectively reflects and isolates external noise while maintaining sufficient airflow channel area, ensuring quietness in the cab. When external noise attempts to invade, it will encounter this turning of the annular airflow channel, and will be effectively attenuated and reflected, greatly reducing the interference of noise in the cab. At the same time, due to the sufficient area of ​​the annular airflow channel, this turning design does not cause obvious obstruction to the flow of airflow, ensuring air circulation and comfort in the cab.

[0076] The technical effects of the vehicle pressure relief device of the embodiment of the present application are mainly reflected in the following aspects: First, through the design and configuration of two specially shaped sound absorbing parts, it can effectively absorb and reduce the noise from inside and outside the cab, providing a quieter working environment for the driver. Secondly, the design of the annular airflow channel with a variable cross-sectional area formed between the two sound absorbing parts enables the entire vehicle pressure relief device to be adjusted according to the actual airflow requirements, ensuring that the airflow in the cab is stable and smooth, and avoiding ear pressure or other discomfort caused by poor airflow.

[0077] In general, the vehicle pressure relief device proposed in the embodiment of the present application has a first sound absorbing member 5 and a second sound absorbing member 6 of a special structure arranged side by side inside its shell, and the first sound absorbing member 5 can move relative to the second sound absorbing member 6, and can form an annular airflow channel with a variable cross-sectional area between the two, so as to adaptively adjust the airflow inside and outside the cab, balance the air pressure, and improve the comfort inside the cab; and when the noise outside the cab tries to invade the cab through this annular airflow channel, the two sound absorbing members can efficiently absorb the noise, reduce the interference of external noise on the cab, greatly improve the quietness and comfort of the cab, and enhance the driving experience of the driver.

[0078] The vehicle pressure relief device provided in the embodiment of the present application can improve the comfort of the cab. Specifically, during the driving of a truck, air pressure fluctuations may occur in the cab due to bumps, acceleration or deceleration, etc. The vehicle pressure relief device can automatically adjust the air pressure balance inside and outside the cab to reduce noise and discomfort caused by air pressure changes. The technical solution provided in the embodiment of the present application can effectively absorb and reduce the noise inside and outside the cab by arranging two sound absorbing parts inside the shell.

[0079] The vehicle pressure relief device provided in the embodiment of the present application is installed on, for example, a rear panel of a truck cab. The rear panel of the truck cab is a part of the truck cab structure. It is located at the rear of the cab and plays a role in supporting and protecting the internal structure of the cab. This sheet metal is usually made of metal and has sufficient strength and rigidity to cope with various vibrations and impacts that may occur during driving.

[0080] The installation position of the vehicle pressure relief device provided in the embodiment of the present application is closely related to the rear panel metal of the cab. Considering the functional characteristics and working principle of the vehicle pressure relief device, it usually needs to be installed in a position that can effectively adjust and balance the pressure difference between the inside and outside of the cab. Therefore, connecting the vehicle pressure relief device to the rear panel metal of the cab can ensure that it works in the appropriate position.

[0081] In some examples of this application, see Figure 5The first sound absorbing member 5 can be moved to abut against the second sound absorbing member 6, and the protruding structure 51 is used to close the hollow portion 61 to close the annular airflow channel.

[0082] In the vehicle pressure relief device provided in the embodiment of the present application, the first sound absorbing member 5 is designed to be movable, and can be moved to a position closely abutting against the second sound absorbing member 6. In this process, the convex structure 51 on the first sound absorbing member 5 plays a crucial role, which can close the hollow portion 61 on the second sound absorbing member 6, thereby effectively closing the annular airflow channel.

[0083] The advantage of this design is that it enables the vehicle pressure relief device to cope with extreme wading conditions. Specifically, when a car (such as a truck) encounters extreme wading conditions, such as floods caused by heavy rain or deep water sections, external water flow may pose a threat to the interior of the cab. At this time, by making the first sound absorbing member 5 and the second sound absorbing member 6 tightly abut against each other, and using the convex structure 51 to close the hollow portion 61, the annular airflow channel can be quickly and effectively closed, thereby preventing external water flow from entering the interior of the cab through the airflow channel.

[0084] According to the example of the present application, the protruding structure 51 can close the hollow portion 61 to close the annular airflow channel, and this technical effect enhances the safety performance of the vehicle. Through this design, the vehicle pressure relief device of the embodiment of the present application maintains its original airflow regulation and noise control functions while also showing excellent waterproof performance, providing more comprehensive and reliable protection for the driver.

[0085] When the vehicle is parked and the door is opened or closed, the vehicle pressure relief device provided by the embodiment of the present application can adjust the cross-sectional area of ​​the annular airflow channel to the maximum, quickly balance the air pressure inside and outside the cab, and reduce the ear pressure. At the same time, in extreme wading conditions, the pressure relief valve airflow channel is fully closed in time to prevent external water from entering the cab through the annular airflow channel of the vehicle pressure relief device.

[0086] In some examples of this application, see Figures 1 to 5 The vehicle pressure relief device includes a driving member 1, which is arranged on the shell; the driving member 1 is connected to the first sound absorbing member 5, and the driving member 1 is used to drive the first sound absorbing member 5 to move toward the second sound absorbing member 6, thereby changing the gap between the first sound absorbing member 5 and the second sound absorbing member 6.

[0087] Reference Figure 1 Hezhi Figure 5In the structure shown, the vehicle pressure relief device includes a driving member 1, which is installed on the outer wall of the shell, and the driving member 1 can form a connection relationship with the first sound absorbing member 5. The main function of the driving member 1 is to drive the first sound absorbing member 5 to move toward the second sound absorbing member 6, thereby changing the gap between the two.

[0088] By introducing the driving member 1 , the movement of the first sound absorbing member 5 is controlled, and the adjustment of the gap between the first sound absorbing member 5 and the second sound absorbing member 6 is made simpler.

[0089] In addition, the addition of the driving member 1 also improves the automation of the entire vehicle pressure relief device. Through programming or sensor control, the driving member 1 can be remotely controlled or automatically adjusted, so that the movement of the first sound absorbing member 5 can be adjusted in real time according to factors such as vehicle operating conditions and external environmental noise. This intelligent design improves the convenience of driving.

[0090] In some examples of this application, see Figure 5 The first sound absorbing member 5 is arranged on a pad 4, and the pad 4 is located in the shell; an elastic element 3 is arranged between the pad 4 and the shell.

[0091] According to the example of the present application, the first sound absorbing member 5 is not directly installed inside the shell, but is arranged on a pad 4. The pad 4 is located inside the shell as an intermediary and plays a supporting role. The arrangement of the pad 4 enhances the stability and reliability of the installation of the first sound absorbing member 5. The pad 4 serves as a solid supporting platform and can withstand the weight of the first sound absorbing member 5 and the force generated during operation, preventing it from being damaged or failing due to uneven or unstable force.

[0092] An elastic element 3 is arranged between the pad 4 and the shell. The introduction of the elastic element 3 brings certain technical effects. First, it makes the connection between the first sound absorbing member 5 and the shell have a certain elasticity, that is, the first sound absorbing member 5 can have a certain displacement space when subjected to external force, instead of being rigidly fixed in a certain position. This design allows the first sound absorbing member 5 to be moved as needed, so as to better adapt to different working scenes and airflow requirements. Secondly, the elastic element 3 also plays a certain role in buffering and shock absorption. During the driving of a vehicle (such as a truck), especially on bumpy roads, the shell and its internal components of the vehicle pressure relief device may be subjected to greater vibration and impact. Through the buffering effect of the elastic element 3, the impact of these vibrations and impacts on the first sound absorbing member 5 can be effectively reduced, thereby protecting its normal operation and extending its service life.

[0093] In some examples of this application, see Figure 3 The shell is cylindrical and includes an upper cover 2 and a lower cover 8 that are buckled together; the second sound absorbing member 6 is arranged on the inner wall of the lower cover 8; and the lower cover 8 is connected to the rear panel of the vehicle's cab.

[0094] The housing of the vehicle pressure relief device is designed to be cylindrical, which has many advantages in application.

[0095] For example, the cylindrical shell design makes it easier to assemble the vehicle pressure relief device to the cab rear panel. Since the cylinder has a smooth curved profile, it can easily match the circular opening on the cab rear panel, reducing the complexity and difficulty of assembly.

[0096] In particular, when the housing of the vehicle pressure relief device is designed to be cylindrical, the opening on the cab rear panel connected thereto is also designed to be a circular structure. Compared with a square structure, a circular structure can better distribute stress evenly to the entire edge when subjected to force, thereby avoiding stress concentration at right angles. This stress dispersion feature helps reduce the risk of deformation and cracking of the cab rear panel, thereby improving the overall durability and service life of the cab.

[0097] Furthermore, from a manufacturing perspective, a cylindrical housing is easier to machine and manufacture.

[0098] It can be seen that designing the housing of the vehicle pressure relief device to be cylindrical not only facilitates assembly and improves the durability of the cab, but also has manufacturing advantages. This design fully considers practicality, safety and aesthetics, and contributes to the overall performance and quality improvement of the vehicle.

[0099] In the example of the present application, the housing is designed to be composed of an upper cover 2 and a lower cover 8 that are buckled together. This buckle design makes the assembly and disassembly of the housing convenient and quick, and also facilitates later repair and maintenance.

[0100] For example, see Figure 6 and Figure 7 A buckle 21 is provided on the outer wall of the upper cover 2. Fig.13 and Fig.14 A bayonet 83 matching the buckle 21 is provided on the outer wall of the lower cover 8, and the buckle 21 and the bayonet 83 are provided in a one-to-one correspondence. Through the snap connection between the buckle 21 and the bayonet 83, the snap connection between the upper cover 2 and the lower cover 8 can be achieved.

[0101] In the example of the present application, the second sound absorbing member 6 is arranged on the inner wall of the lower cover 8. Such a layout enables the second sound absorbing member 6 to be well fixed in the housing, and along with the movement design of the first sound absorbing member 5, the relative position or gap between the second sound absorbing member 6 and the first sound absorbing member 5 can be well controlled.

[0102] The lower cover 8 is a part of the housing. In view of this, the housing of the vehicle pressure relief device can be fixed to the rear panel of the vehicle's cab, for example, by a bracket, bolts or other connection methods. Such an installation position not only facilitates the maintenance and repair of the entire vehicle pressure relief device, but also ensures that its normal operation is not interfered with by other vehicle components.

[0103] The vehicle pressure relief device provided in the embodiment of the present application is installed and fixed in an appropriate position by connecting with the rear panel of the truck cab. Such a design not only ensures the normal working performance of the entire vehicle pressure relief device, but also improves the overall safety and reliability of the vehicle.

[0104] In some examples of this application, see Fig.10 and Fig.11 The protrusion structure 51 is an arc-shaped protrusion, and a through hole is arranged in the middle of the protrusion structure 51; the hollow portion 61 is a circular through hole arranged in the middle of the second sound absorbing member 6.

[0105] The protrusion structure 51 on the first sound absorbing member 5 is designed as an arc-shaped protrusion. The arc-shaped protrusion and the circular hollow portion 61 are conducive to forming an annular airflow channel. In this annular airflow channel, the airflow will be discharged to the outside of the vehicle after a nearly 90° turn. At the same time, the noise outside the vehicle will be greatly attenuated when it is transmitted to the inside of the vehicle through the 90° turn channel.

[0106] When the first sound absorbing member 5 moves to abut against the second sound absorbing member 6, the arc-shaped protrusion on the first sound absorbing member 5 can better seal the hollow portion 61, thereby achieving complete closure of the annular air flow channel. This design effectively prevents external water or other impurities from entering the cab through the gap, thereby enhancing the sealing performance of the device.

[0107] In addition, see Fig.10 A through hole is also provided in the middle of the protruding structure 51. This through hole not only reduces the weight of the entire protruding structure 51 and reduces the material cost, but also plays a role in balancing the air pressure in practical applications. For example, when the first sound absorbing member 5 and the second sound absorbing member 6 are tightly fitted, the presence of the through hole can allow a small amount of air to flow, avoiding the problem of air pressure imbalance caused by complete closure, thereby ensuring the stability and reliability of the device.

[0108] On the other hand, see Fig.12 The hollow portion 61 is designed as a circular through hole set in the middle of the second sound absorbing member 6. This design makes the hollow portion 61 have a regular geometric shape, which is easy to process and manufacture. At the same time, the circular through hole structure is also conducive to the smooth passage of airflow, reducing the resistance of airflow when passing through the hollow portion, and improving the efficiency of the airflow channel.

[0109] In some examples of this application, see Figure 5 The driving member 1 is arranged on the outer wall of the upper cover 2. One end of the elastic element 3 is connected to the upper cover 2, and the other end is connected to the pad 4.

[0110] The driving member 1 is arranged on the outer wall of the upper cover 2, rather than inside the shell or other locations. Placing the driving member 1 on the outer wall of the upper cover 2 makes the operation and maintenance of the driving member 1 more convenient. Since it is located outside, technicians can inspect, repair or replace the driving member 1 without disassembling the entire shell, which improves the maintainability of the equipment. In addition, this design also helps to optimize the internal space layout of the shell. Placing the driving member 1 outside can free up space inside the shell, providing more room for movement for other key components such as the first sound absorbing member 5 and the second sound absorbing member 6, ensuring that they can move smoothly to adjust the size of the airflow channel.

[0111] One end of the elastic element 3 is connected to the upper cover 2, and the other end is connected to the pad 4. The introduction of the elastic element 3 increases the elasticity of the structure, so that the upper cover 2, the pad 4 and other components between them can have a certain buffer space when subjected to vibration or impact, reducing the possibility of direct hard contact. This can not only protect these components from damage, but also reduce the noise generated by vibration, further improving the quietness of the cab.

[0112] In some examples of this application, see Fig.13 and Fig.14 The lower cover 8 includes a first circular ring structure 81 and a second circular ring structure 82 which are connected in sequence, the first circular ring structure 81 is arranged close to the upper cover 2, and the second circular ring structure 82 is arranged away from the upper cover 2; the first circular ring structure 81 is connected to the second circular ring structure 82, and an exhaust flap plate 7 is arranged at the connecting position of the first circular ring structure 81 and the second circular ring structure 82.

[0113] See also Fig.13 and Fig.14, the lower cover 8 is composed of a first circular ring structure 81 and a second circular ring structure 82 connected in sequence. This double circular ring structure not only provides a stable support for the device, but also makes the overall structure more compact and beautiful. The first circular ring structure 81 is arranged close to the upper cover 2, while the second circular ring structure 82 is far away from the upper cover 2. Among them, a bayonet 83 can be arranged on the first circular ring structure 81, and the bayonet 83 is used to form a snap connection with the buckle 21 on the upper cover 2.

[0114] In the example of the present application, an exhaust flap plate 7 is provided at the connection position between the first circular ring structure 81 and the second circular ring structure 82. When the air pressure inside the cab increases, the annular airflow channel formed between the first sound absorbing member 5 and the second sound absorbing member 6 enables the air inside the cab to quickly blow open the exhaust flap plate 7 and be discharged from the cab. This design can quickly balance the air pressure difference inside and outside the cab, effectively eliminate the ear pressure feeling of passengers inside the cab, and provide passengers with a more comfortable and safe driving experience.

[0115] In some examples of the present application, when an annular airflow channel is formed between the first sound absorbing member 5 and the second sound absorbing member 6, the air flow in the cab can cause the exhaust flap plate 7 to be in an open state; wherein, the exhaust flap plate 7 is composed of a plurality of exhaust plates, and the plurality of exhaust plates form a circle.

[0116] In the vehicle pressure relief device provided in the embodiment of the present application, an annular airflow channel can be formed between the first sound absorbing member 5 and the second sound absorbing member 6. This design not only optimizes the airflow path, but also makes the structure of the entire device more compact. When the air in the cab flows, the airflow can directly act on the exhaust flap 7, causing it to be in an open state.

[0117] The exhaust flap plate 7 can be designed to consist of a plurality of exhaust plates.

[0118] The exhaust plates are, for example, enclosed in a circle to form a complete circular exhaust port. The design of this circular exhaust port can better adapt to the flow characteristics of the airflow, reduce the resistance of the airflow when passing through, and thus improve the exhaust efficiency.

[0119] It should be noted that the structure composed of multiple exhaust plates enables the exhaust flap plate 7 to have better structural strength and stability, and can withstand greater airflow impact without being easily damaged.

[0120] When the air pressure in the cab increases, the airflow will quickly pass through the annular airflow channel and act on the exhaust flap 7, causing it to open automatically. In this way, the air in the cab can be discharged smoothly, quickly balancing the indoor and outdoor air pressure difference, and effectively eliminating the passengers' ear pressure.

[0121] The exhaust flaps 7 are made of plastic, for example. This design makes the exhaust flap 7 both light and durable. In addition, the injection molding process of the plastic material effectively controls the manufacturing cost of the exhaust flap 7.

[0122] In some examples of the present application, the driving member 1 is an electromagnetic valve, and the pad 4 is a metal plate that cooperates with the electromagnetic valve; after the electromagnetic valve is energized, a repulsive force can be generated between the pad 4 to drive the pad 4 to drive the first sound absorbing member 5 to move toward the second sound absorbing member 6.

[0123] The driving member 1 is designed as a solenoid valve, and the pad 4 is a metal plate that cooperates with the solenoid valve. When the solenoid valve is energized, a repulsive force is generated between it and the pad 4. This repulsive force further drives the pad 4 to drive the first sound absorbing member 5 to move toward the second sound absorbing member 6.

[0124] The electromagnetic valve is used as the driving member 1, so that a quick and accurate response can be achieved. This is because after the electromagnetic valve is energized, a repulsive force can be quickly generated, thereby quickly adjusting the distance between the first sound absorbing member 5 and the second sound absorbing member 6. This is very beneficial when the air pressure inside and outside the cab needs to be quickly balanced.

[0125] The backing plate 4 is a metal plate with good rigidity and stability. It can withstand the repulsive force generated by the solenoid valve and effectively transfer it to the first sound absorbing member 5. This design ensures the stability and reliability of the entire driving process and avoids performance degradation or safety hazards caused by failure of the driving member.

[0126] In addition, by adjusting the current of the solenoid valve, the magnitude of the repulsive force can be accurately controlled, thereby adjusting the distance between the first sound absorbing member 5 and the second sound absorbing member 6. This control is of great significance for optimizing the cross-sectional area of ​​the annular airflow channel and improving the airflow efficiency, and can further improve the comfort and safety in the cab.

[0127] In some examples of this application, see Fig. 9 , the elastic element 3 is a wave spring.

[0128] See also Figure 8 , the elastic element 3 is in a circular ring shape.

[0129] Each layer of the wave spring is composed of multiple sine waves, which makes it have a greater spring stiffness under the same conditions. Therefore, the wave spring can meet the load requirements within a smaller stroke range, which helps to reduce the overall size of the vehicle pressure relief device. This feature provides greater possibilities for lightweight and compact design of the product. The wave spring has a variable stiffness characteristic, which has better flexibility. This means that the wave spring can better adapt to changes when subjected to load and maintain stable performance.

[0130] In some examples of this application, see Figures 1 to 5 ,as well as Fig.15 and Fig.16 As shown, the vehicle pressure relief device also includes an exhaust structure 9, which is arranged on the lower cover 8; an exhaust port 91 is arranged on the exhaust structure 9, and when the exhaust flap plate 7 is opened, the annular airflow channel can be connected to the exhaust port 91.

[0131] A venting structure 9 is also specially provided in the vehicle pressure relief device, and the venting structure is arranged on the outer wall of the lower cover 8. Fig.16 The exhaust structure 9 is provided with an exhaust port 91, which plays a vital role in the operation of the entire vehicle pressure relief device. When the air pressure in the cab increases and excess air needs to be discharged, the exhaust flap 7 will automatically open under the action of the airflow. Once the exhaust flap 7 is opened, the annular airflow channel can be smoothly connected with the exhaust port 91. At this time, the air in the cab can be discharged from the exhaust port 91 along the annular airflow channel through the opened exhaust flap 7 and finally discharged outside the vehicle.

[0132] In some examples of this application, see Fig.16 The exhaust port 91 is circular, and a fence structure is arranged inside the exhaust port 91.

[0133] The exhaust port 91 is designed to be circular, which can reduce the resistance of airflow passing through and improve the exhaust efficiency. The circular structure has a certain structural strength and can withstand a large airflow impact force.

[0134] A fence structure is provided inside the exhaust port 91. The fence structure can effectively prevent foreign matter such as dust and insects inside and outside the cab from entering the cab through the exhaust port, thereby keeping the cab clean and comfortable. At the same time, the fence structure can block the noise in the external airflow to a certain extent, and improve the quietness performance in the cab. In addition, the design of the fence structure also takes into account the uniform distribution of the airflow. By reasonably arranging the spacing and shape of the fence, it can be ensured that the airflow can be evenly distributed when passing through the exhaust port 91, avoiding the situation where the local airflow is too large or too small, and further improving the exhaust efficiency and the airflow comfort in the cab.

[0135] In some examples of the present application, the exhaust structure 9 is fixed to the cab rear panel and the lower cover 8 by fasteners 10 .

[0136] The fastener 10 is, for example, a bolt.

[0137] The fastener 10 can connect the exhaust structure 9 with the cab rear panel and the lower cover 8 to form a stable whole. In this way, even under complex road conditions and driving environments, the exhaust structure 9 can maintain its position and function unchanged, avoiding performance degradation or safety hazards caused by loosening or falling off.

[0138] In some examples of the present application, the vehicle pressure relief device also includes a controller and a pressure sensor, the controller is connected to the pressure sensor; the controller is connected to a control system of the vehicle, the pressure sensor is arranged in the cab, and the controller is used to control the driving member 1 to drive the first sound absorbing member 5 to move according to the air pressure conditions in the cab obtained by the pressure sensor, so as to adjust the cross-sectional area of ​​the annular airflow channel.

[0139] A controller and a pressure sensor are introduced into the vehicle pressure relief device, which together constitute an intelligent control system, so that the vehicle pressure relief device can automatically adjust the cross-sectional area of ​​the internal annular airflow channel according to the actual air pressure in the cab, thereby optimizing the air pressure balance effect in the cab. The pressure sensor is, for example, an air pressure sensor.

[0140] Among them, the air pressure sensor can be installed in the cab, and its main function is to monitor and obtain the air pressure data in the cab in real time. These data are crucial for evaluating the air pressure condition in the cab and are the basis for subsequent control and adjustment.

[0141] For example, during the driving process of the whole vehicle, by real-time collection of air pressure fluctuations inside the cab, the push-pull force of the solenoid valve can be adjusted in real time according to the air pressure fluctuations inside the cab, and the cross-sectional area of ​​the annular airflow channel inside the vehicle pressure relief device can be dynamically adjusted, thereby timely balancing the air pressure inside and outside the cab while effectively reducing the external noise transmitted into the cab through the airflow channel.

[0142] Optionally, an air pressure sensor can be mounted and fixed inside the driver's seat headrest. A microphone noise sensor can be used.

[0143] Optionally, the controller can be integrated into the vehicle control system.

[0144] During the driving process of the whole vehicle, the bumps in the cab cause the seats, ceiling and other structures inside the cab to vibrate, causing the air pressure inside the cab to fluctuate. The air pressure sensor in the cab can collect the air pressure fluctuation data inside the cab in real time, and then the controller controls the suction or repulsion of the solenoid valve (i.e., the driving member 1) in real time according to the data collected by the air pressure sensor in the cab and the vehicle vibration data collected by the vehicle control system, thereby controlling the cross-section of the annular airflow channel between the first sound absorbing member 5 and the second sound absorbing member 6 in real time, which can ensure the rapid balance of the air pressure inside and outside the cab while minimizing the transmission of external noise from the cab to the inside of the cab through the airflow channel.

[0145] The pressure sensor transmits the acquired pressure data to the controller. The controller is responsible for receiving and processing the data and issuing corresponding control instructions according to the processing results. In the present application, the controller is connected to the control system of the vehicle, and can obtain more vehicle status information, providing strong support for accurate control decisions.

[0146] According to the data provided by the pressure sensor, the controller will determine the air pressure condition in the cab. If the air pressure is too high, the controller will issue a command to drive the driving member 1 to work, push the first sound absorbing member 5 to move, and thus adjust the cross-sectional area of ​​the annular airflow channel. This adjustment process is performed based on real-time air pressure data, and the purpose is to ensure that the annular airflow channel can provide sufficient ventilation and quickly balance the air pressure difference inside and outside the cab.

[0147] Through the intelligent control method provided by the example of this application, the vehicle pressure relief device of the embodiment of this application can not only respond quickly to changes in air pressure, but also adjust according to specific circumstances. This not only improves the air pressure balance effect in the cab, but also enhances the comfort and safety of passengers. At the same time, due to the use of an automatic control system, the need for human intervention is reduced, the difficulty of operation and the error rate are reduced, and the reliability and ease of use of the device are improved.

[0148] In some examples of the present application, the first sound absorbing member 5 and / or the second sound absorbing member 6 is sound absorbing cotton.

[0149] The first sound absorbing member 5 and / or the second sound absorbing member 6 are / is made of sound absorbing cotton material.

[0150] More specifically, the first sound absorbing member 5 and / or the second sound absorbing member 6 is polyurethane sound absorbing cotton.

[0151] Polyurethane sound-absorbing cotton has a wide range of applications in the field of acoustics due to its unique properties. Its fiber structure and porosity enable it to effectively absorb sound wave energy, reduce sound echoes and reflections, thereby reducing noise levels and improving indoor acoustic environments. In automotive pressure relief devices, the introduction of polyurethane sound-absorbing cotton can significantly reduce noise in the cab.

[0152] In addition, polyurethane sound-absorbing cotton also has good durability and stability, and is not easily affected by moisture, mold or insect damage, so it can maintain its sound absorption performance during long-term use. This feature enables it to exert a stable noise reduction effect under various environmental conditions.

[0153] The injection molding process can achieve high efficiency, high precision and good cost control in manufacturing polyurethane sound-absorbing cotton. The injection molding process can ensure the precise shape and size of the sound-absorbing cotton, thus meeting the specific requirements of the vehicle pressure relief device for sound absorbing parts.

[0154] According to the vehicle pressure relief device provided in the embodiment of the present application, it is installed on the rear panel of the cab when in use. At the moment when the cab door is closed, the airflow in the cab will naturally pass through the annular airflow channel between the first sound absorbing member 5 and the second sound absorbing member 6. The force of this airflow is enough to blow open the exhaust flap 7, so that the air in the cab is smoothly discharged through the exhaust port 91, ensuring the balance of air pressure inside and outside the cab.

[0155] During the driving process, the bumps in the cab will cause slight vibrations in the seats, ceiling and other structures inside the cab, which will in turn cause fluctuations in the air pressure inside the cab. At this time, the internal airflow will automatically open or close the exhaust flap 7 according to the changes in air pressure to balance the air pressure inside and outside the cab in real time, providing passengers with a stable and comfortable riding environment.

[0156] It is worth mentioning that when the noise outside the cab tries to enter the cab through the annular airflow channel, it will encounter two solid defense lines of the first sound absorbing member 5 and the second sound absorbing member 6. In particular, high-frequency noise is effectively absorbed by the adsorption of these two sound absorbing members. In addition, the 90° corner design of the annular airflow channel not only enhances the airflow control effect, but also effectively reflects and isolates external noise, greatly reducing the interference of external noise in the cab to internal passengers, and significantly improving the riding comfort of the cab.

[0157] According to another aspect of an embodiment of the present application, a vehicle is provided, comprising: a vehicle body and the vehicle pressure relief device as described above.

[0158] The vehicle provided in the embodiment of the present application is provided with a vehicle pressure relief device. When the air pressure in the cab is too high during driving, the vehicle pressure relief device can quickly open the exhaust port to discharge the excess gas and maintain the air pressure balance inside and outside the cab. At the same time, the sound-absorbing material inside can effectively absorb and isolate noise, reduce the noise level in the cab, and create a quiet and comfortable riding environment for passengers.

[0159] The specific implementation of the vehicle in the embodiment of the present application can refer to the various embodiments of the vehicle pressure relief device mentioned above, so it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0160] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0161] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A vehicle pressure relief device, characterized in that: It comprises a shell and a sound-absorbing and pressure-relieving component arranged inside the shell; The sound absorbing and pressure relief component comprises a first sound absorbing member (5) and a second sound absorbing member (6) which are arranged in parallel; The first sound absorbing member (5) has a protruding structure (51) facing the second sound absorbing member (6), and the second sound absorbing member (6) is provided with a hollow portion (61) matching the protruding structure (51); The first sound absorbing member (5) is movable, so that an annular air flow channel with a variable cross-sectional area is formed between the first sound absorbing member (5) and the second sound absorbing member (6).

2. The vehicle pressure relief device according to claim 1, characterized in that: The first sound absorbing member (5) is capable of moving to abut against the second sound absorbing member (6), and the protruding structure (51) is used to close the hollow portion (61) to close the annular airflow channel.

3. The vehicle pressure relief device according to claim 1 or 2, characterized in that: The vehicle pressure relief device comprises a driving component (1), wherein the driving component (1) is arranged on the housing; The driving member (1) is connected to the first sound absorbing member (5), and the driving member (1) is used to drive the first sound absorbing member (5) to move toward the second sound absorbing member (6), thereby changing the gap between the first sound absorbing member (5) and the second sound absorbing member (6).

4. The vehicle pressure relief device according to claim 3, characterized in that: The first sound absorbing member (5) is arranged on a pad (4), and the pad (4) is located inside the shell; An elastic element (3) is arranged between the pad (4) and the shell.

5. The vehicle pressure relief device according to claim 4, characterized in that: The shell is cylindrical and comprises an upper cover (2) and a lower cover (8) which are buckled together; The second sound absorbing member (6) is arranged on the inner wall of the lower cover (8); The lower cover (8) is connected to the rear panel metal of the vehicle's cab.

6. The vehicle pressure relief device according to claim 1, characterized in that: The protrusion structure (51) is an arc-shaped protrusion, and a through hole is provided in the middle of the protrusion structure (51); The hollow portion (61) is a circular through hole arranged in the middle of the second sound absorbing member (6).

7. The vehicle pressure relief device according to claim 5, characterized in that: The driving member (1) is arranged on the outer wall of the upper cover (2); One end of the elastic element (3) is connected to the upper cover (2), and the other end is connected to the pad (4).

8. The vehicle pressure relief device according to claim 5, characterized in that: The lower cover (8) comprises a first circular ring structure (81) and a second circular ring structure (82) which are connected in sequence, wherein the first circular ring structure (81) is arranged close to the upper cover (2), and the second circular ring structure (82) is arranged away from the upper cover (2); The first circular ring structure (81) is connected to the second circular ring structure (82), and an exhaust flap plate (7) is provided at the connection position between the first circular ring structure (81) and the second circular ring structure (82).

9. The vehicle pressure relief device according to claim 8, characterized in that: When an annular airflow channel is formed between the first sound absorbing member (5) and the second sound absorbing member (6), the air flow in the cab can cause the exhaust flap (7) to be in an open state; Wherein, the exhaust flap plate (7) is composed of a plurality of exhaust plates, and the plurality of exhaust plates form a circle.

10. The vehicle pressure relief device according to claim 4, characterized in that: The driving member (1) is a solenoid valve, and the backing plate (4) is a metal plate that cooperates with the solenoid valve; After the solenoid valve is energized, a repulsive force can be generated between the solenoid valve and the pad (4), so as to drive the pad (4) to drive the first sound absorbing member (5) to move toward the second sound absorbing member (6).

11. The vehicle pressure relief device according to claim 4, characterized in that: The elastic element (3) is a wave spring.

12. The vehicle pressure relief device according to claim 8, characterized in that: The vehicle pressure relief device further comprises an exhaust structure (9), wherein the exhaust structure (9) is arranged on the lower cover (8); An exhaust port (91) is provided on the exhaust structure (9), and when the exhaust flap (7) is opened, the annular airflow channel can be in communication with the exhaust port (91).

13. The vehicle pressure relief device according to claim 12, characterized in that: The exhaust port (91) is circular, and a fence structure is arranged inside the exhaust port (91).

14. The vehicle pressure relief device according to claim 12, characterized in that: The exhaust structure (9) is fixed to the cab rear panel and the lower cover (8) via fasteners (10).

15. The vehicle pressure relief device according to claim 3, characterized in that: The vehicle pressure relief device also includes a controller and a pressure sensor, and the controller is connected to the pressure sensor; The controller is connected to a control system of the vehicle, the pressure sensor is arranged in the cab, and the controller is used to control the driving member to drive the first sound absorbing member to move according to the air pressure in the cab obtained by the pressure sensor, so as to adjust the cross-sectional area of ​​the annular airflow channel.

16. The vehicle pressure relief device according to claim 1, characterized in that: The first sound absorbing member (5) and / or the second sound absorbing member (6) is sound absorbing cotton.

17. A vehicle, characterized in that: include: Vehicle body; and A vehicle pressure relief device as claimed in any one of claims 1 to 16.

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