A sound insulation device for a pressure relief valve of a vehicle and a control method thereof

Abstract

The application provides a vehicle pressure relief valve sound insulation device and a control method thereof. The sound insulation device is fixedly connected with the pressure relief valve through a base. The sound insulation device further comprises a first sound insulation cover fixedly connected with one end of the base and a second sound insulation cover rotatably connected with the base. The second sound insulation cover is arranged on the inner side of the first sound insulation cover. Under the action of a driving motor, the second sound insulation cover moves in the space formed by the first sound insulation cover and the base. Specifically, the second sound insulation cover can realize different opening sizes of the pressure relief valve, and finally change the size of the pressure relief channel, so as to ensure the stability of the pressure relief valve blade switch, and effectively improve the problems of large noise in the vehicle, low external circulation ventilation efficiency and low air conditioning refrigeration / heat efficiency during the driving of the vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sound insulation devices for pressure relief valves of vehicles, and particularly relates to a sound insulation device for a pressure relief valve of a vehicle and a control method thereof. BACKGROUND

[0002] With the increasing requirements of users for the comfort of vehicles, the manufacturing level of vehicle bodies is also continuously improved, and the sealing performance of vehicles is getting better and better. As a key component for balancing the pressure inside and outside the vehicle, the pressure relief valve not only affects the air conditioning refrigeration and heating performance and the pressure feeling when the door is closed, but also is increasingly important for the noise level inside the vehicle.

[0003] A common pressure relief valve relies on the self-gravity generated by the inclination angle of the blade to close the passage between the inside and outside of the vehicle. When the vehicle door is closed or the air is exchanged, the pressure inside the vehicle increases, and the blade will be opened. It should be noted that in the working conditions of high-speed driving or acceleration with full throttle, the pressure inside the vehicle is greater than that outside the vehicle, and the blade will be opened. However, the blade of the traditional pressure relief valve is often in a partially open state due to the influence of wind resistance, and cannot effectively balance the pressure inside and outside the vehicle, which makes the pressure relief valve a weak point of the sound insulation of the vehicle body, directly affecting the noise level inside the vehicle. At the same time, the opening degree of the blade of the traditional pressure relief valve cannot be controlled, and the sealing of the blade itself is difficult, which affects the air exchange efficiency when the vehicle is in external circulation and the air conditioning refrigeration or heating efficiency. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a sound insulation device for a pressure relief valve of a vehicle and a control method thereof, so as to solve the problem that the blade of the existing pressure relief valve is easily affected during high-speed driving of the vehicle, thereby causing the problems of high noise inside the vehicle, low air exchange efficiency in external circulation, and low air conditioning refrigeration / heating efficiency during driving of the vehicle.

[0005] According to the sound insulation device for a pressure relief valve of a vehicle of the present application, the sound insulation device for a pressure relief valve of a vehicle comprises a base, a first sound insulation cover fixedly connected to one end of the base, and a second sound insulation cover rotatably connected to the base, and the side of the base away from the first sound insulation cover and the second sound insulation cover is used for fixedly connecting with the pressure relief valve.

[0006] Among them, the second sound insulation cover is placed inside the first sound insulation cover, so that the second sound insulation cover moves in the space formed by the first sound insulation cover and the base under the action of the driving motor.

[0007] Further, the base is a frame structure matched with the pressure relief valve, and buckles are arranged around the base to install the base on the pressure relief valve through the buckles.

[0008] Further, the base extends a fixing part towards the first sound insulation cover, wherein a mounting hole is arranged on the fixing part, the mounting hole is used for arranging a driving shaft, one end of the driving shaft is fixedly connected with the second sound insulation cover, and the other end is connected with the driving motor through a gear, when the driving motor receives a rotating signal of the controller, the driving motor drives the driving shaft to rotate according to a preset rule through the gear, so that the second sound insulation cover rotates around the driving shaft and moves in the space formed by the first sound insulation cover and the base.

[0009] Further, the second sound insulation cover is coated with sound-absorbing material away from the first sound insulation cover.

[0010] Further, the first sound insulation cover and the second sound insulation cover are both arc-shaped.

[0011] Further, the distance between any point on the first sound insulation cover and the center point of the driving shaft is the same, and the opening of the first sound insulation cover faces downward.

[0012] Further, one end of the first sound insulation cover is always attached to the inner wall of the second sound insulation cover, when the vehicle pressure relief valve sound insulation device is in an incomplete closing state, there is a gap between the first sound insulation cover and the second sound insulation cover, and the gap gradually increases along the opening direction of the first sound insulation cover.

[0013] According to the control method for controlling the vehicle pressure relief valve sound insulation device, the method comprises:

[0014] Obtaining vehicle information, wherein the vehicle information at least comprises door opening and closing information, air conditioner control information and vehicle speed information;

[0015] According to the door opening and closing information, it is judged whether the door is closed or not;

[0016] If yes, according to the air conditioner control information, it is judged whether the air conditioner is in an external circulation state or not;

[0017] If yes, according to the vehicle speed information, the second sound insulation cover is controlled to close according to a preset position.

[0018] Further, before the step of judging that the air conditioner is in an external circulation state, and then controlling the driving motor to act on the second sound insulation cover to make the second sound insulation cover close according to a preset position according to the vehicle speed information, the method further comprises:

[0019] Controlling the pressure relief valve blade to be fully opened, and controlling the second sound insulation cover to be fully closed;

[0020] Obtaining a target rotating position of the second sound insulation cover when the pressure relief valve blade rotates under each vehicle speed value.

[0021] A mapping model of each of the vehicle speed values and the corresponding target rotational position is established.

[0022] Further, when it is judged that the air conditioner is in the external circulation state, the step of controlling the driving motor to act on the second sound insulation cover so that the second sound insulation cover is closed at the preset position according to the vehicle speed information comprises:

[0023] A current vehicle speed value is obtained, and the current vehicle speed value is input into the mapping model to obtain a corresponding rotational position;

[0024] The second sound insulation cover is controlled to be closed according to the rotational position.

[0025] Compared with the prior art, the sound insulation device and the pressure relief valve are fixedly connected through the base. Since the sound insulation device further comprises the first sound insulation cover fixedly connected to one end of the base and the second sound insulation cover rotatably connected to the base, the second sound insulation cover is arranged on the inner side of the first sound insulation cover. Under the action of the driving motor, the second sound insulation cover moves in the space formed by the first sound insulation cover and the base. Specifically, by the movement of the second sound insulation cover, different opening sizes of the pressure relief valve can be realized, and finally the size of the pressure relief channel can be changed, so that the stability of the pressure relief valve blade switch can be ensured, and the problems of large noise in the vehicle, low external circulation ventilation efficiency and low air conditioning cooling / heating efficiency during the driving of the vehicle can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structure schematic view when the vehicle pressure relief valve sound insulation device in the embodiment one is completely opened;

[0027] Figure 2 It is a structure schematic view when the vehicle pressure relief valve sound insulation device in the embodiment one is partially closed;

[0028] Figure 3 It is a structure schematic view when the vehicle pressure relief valve sound insulation device in the embodiment one is completely closed;

[0029] Figure 4 It is a structure schematic view when the vehicle pressure relief valve sound insulation device in the embodiment two is completely opened;

[0030] Figure 5 It is a structure schematic view when the vehicle pressure relief valve sound insulation device in the embodiment two is partially closed;

[0031] Figure 6 It is a structure schematic view when the vehicle pressure relief valve sound insulation device in the embodiment two is completely closed;

[0032] Figure 7The flow chart of the control method for the sound insulation device of the pressure relief valve for a vehicle.

[0033] The following detailed description will further illustrate the present application with reference to the above mentioned drawings. DETAILED DESCRIPTION

[0034] For the purpose of promoting the understanding of the present application, the present application will be described in further detail with reference to the drawings. The drawings show several embodiments of the present application. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of the embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "left", "right", and similar expressions used herein are for illustrative purposes only.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0037] Embodiment One

[0038] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a structural schematic diagram of the sound insulation device of the pressure relief valve for a vehicle in embodiment one of the present application when fully opened, Figure 2 is a structural schematic diagram of the sound insulation device of the pressure relief valve for a vehicle in embodiment one of the present application when partially closed, Figure 3 is a structural schematic diagram of the sound insulation device of the pressure relief valve for a vehicle in embodiment one of the present application when fully closed, including a base 1, a first sound insulation cover 2 fixedly connected to one end of the base 1, and a second sound insulation cover 3 rotatably connected to the base 1.

[0039] Among them, the side of the base 1 away from the first sound insulation cover 2 and the second sound insulation cover 3 is used for fixedly connecting with the pressure relief valve. Specifically, the base 1 is a frame structure matched with the pressure relief valve, and buckles (not shown in the figure) are arranged around the base 1 to install the base 1 on the pressure relief valve through the buckles, facilitating disassembly. At the same time, different pressure relief valves can be matched with base 1 and sound insulation cover of appropriate size.

[0040] Specifically, the middle regions of the two sides of the base 1 extend towards the first sound insulation cover 2 in the direction of the fixing portion 11, wherein the fixing portion 11 is provided with a mounting hole 12 for accommodating a drive shaft, one end of the drive shaft is fixedly connected with the second sound insulation cover 3, and the other end is connected with a drive motor through a gear, when the drive motor receives a rotating signal from a controller, the drive motor drives the drive shaft to rotate according to a preset rule through the gear, and since the second sound insulation cover 3 is arranged inside the first sound insulation cover 2, the second sound insulation cover 3 rotates around the drive shaft and moves in the space formed by the first sound insulation cover 2 and the base 1. It can be understood that, according to the rotation of the second sound insulation cover 3, different opening sizes of the pressure relief valve can be realized, and finally the size of the pressure relief channel can be changed.

[0041] In the embodiment, the shapes of the first sound insulation cover 2 and the second sound insulation cover 3 are both circular arc shapes, and the outer surfaces are spherical surfaces, wherein the first sound insulation cover 2 is downwardly open, and the second sound insulation cover 3 is open upwardly and downwardly. Since the fixing portion 11 is located in the middle regions of the two sides of the base 1, the drive shaft is also located in the middle region of the base 1. It can be understood that the distance from any point on the first sound insulation cover 2 to the center point of the drive shaft is the same, the distance from any point on the second sound insulation cover 3 to the center point of the drive shaft is the same, and the distance from any point on the first sound insulation cover 2 to the center point of the drive shaft is greater than the distance from any point on the second sound insulation cover 3 to the center point of the drive shaft, that is, the second sound insulation cover 3 moves in the first sound insulation cover 2.

[0042] In addition, in order to increase the sound absorption performance of the sound insulation device when it is partially opened, the side of the second sound insulation cover 3 away from the first sound insulation cover 2 is coated with sound absorption material 31, wherein the sound absorption material 31 can be sound absorption cotton with a thickness of about 10 mm, and completely covers the inner wall surface of the second sound insulation cover 3.

[0043] Embodiment two

[0044] Please refer to Figure 4 , Figure 5 and Figure 6 , Figure 4 is a structure schematic view of the vehicle pressure relief valve sound insulation device in the embodiment two of the present application when it is completely opened, Figure 5 is a structure schematic view of the vehicle pressure relief valve sound insulation device in the embodiment two of the present application when it is partially closed, Figure 6 is a structure schematic view of the vehicle pressure relief valve sound insulation device in the embodiment two of the present application when it is completely closed, and the vehicle pressure relief valve sound insulation device in the embodiment two of the present application is different from the embodiment one of the present application in that the position of the fixing portion 11 extending from the base 1 towards the first sound insulation cover 2 is different, and the arc shapes of the first sound insulation cover 2 and the second sound insulation cover 3 are different, one is a spherical arc shape, and the other is an ellipsoidal arc shape.

[0045] Specifically, the arc shapes of the first sound insulation cover 2 and the second sound insulation cover 3 in the first embodiment of the present application are spherical arc shapes, so that a fixed gap always exists between the first sound insulation cover 2 and the second sound insulation cover 3, resulting in poor sealing effect and affecting the sound insulation effect to some extent. Therefore, in the second embodiment, the fixed part 11 is arranged at a position slightly below the middle of the base 1, and the rotating shaft is arranged. One end of the driving shaft is fixedly connected with the second sound insulation cover 3, and the other end is connected with the driving motor through a gear. It can be understood that the distance from any point on the first sound insulation cover 2 to the center point of the driving shaft is the same. Since the arc shape of the second sound insulation cover 3 is an ellipsoidal arc shape, the distance from any point on the second sound insulation cover 3 to the center point of the driving shaft is not completely the same.

[0046] It should be noted that one end of the first sound insulation cover 2 always abuts against the inner wall of the second sound insulation cover 3. When the vehicle pressure relief valve sound insulation device is in an incomplete closed state, a gap exists between the first sound insulation cover 2 and the second sound insulation cover 3, and the gap gradually increases along the opening direction of the first sound insulation cover 2. By adjusting the rotation angle of the second sound insulation cover 3, the gap between the first sound insulation cover 2 and the second sound insulation cover 3 can be adjusted, so that the sealing effect of the second sound insulation cover 3 can be adjusted. Figure 4 、 Figure 5 and Figure 6 It can be understood that the major axis radius of the ellipse of the second sound insulation cover 3 is similar to the radius of the first sound insulation cover 2, that is, similar to the distance from the fixed part 11 to the upper end of the base 1. This arrangement can make the second sound insulation cover 3 maintain good sealing abutment in any state of rotation around the rotating shaft. In addition, the minor axis radius of the ellipse of the second sound insulation cover 3 is similar to the distance from the fixed part 11 to the lower end of the base 1, that is, when the second sound insulation cover 3 is rotated to a completely closed state of the pressure relief valve, the second sound insulation cover 3 completely covers the base 1.

[0047] In summary, the vehicle pressure relief valve sound insulation device in the embodiments of the present application is fixedly connected with the pressure relief valve through the base. Since the sound insulation device further comprises a first sound insulation cover fixedly connected with one end of the base and a second sound insulation cover rotatably connected with the base, the second sound insulation cover is arranged on the inner side of the first sound insulation cover, so that the second sound insulation cover moves in the space formed by the first sound insulation cover and the base under the action of the driving motor. Specifically, different opening sizes of the pressure relief valve can be realized by the movement of the second sound insulation cover, and finally the size of the pressure relief passage can be changed, so as to ensure the stability of the pressure relief valve blade switch and effectively improve the problems of large noise in the vehicle, low external circulation ventilation efficiency and low air conditioning refrigeration / heat efficiency during the driving of the vehicle.

[0048] Embodiment three

[0049] The present application also provides a vehicle pressure relief valve sound insulation device control method, please refer to Figure 7 for the implementation flowchart of the vehicle pressure relief valve sound insulation device control method. The method specifically comprises the following steps:

[0050] In step S100, vehicle information is acquired, wherein the vehicle information at least includes door switch information, air conditioner control information and vehicle speed information.

[0051] In step S200, whether the door is closed is determined according to the door switch information, and if yes, step S300 is executed.

[0052] Specifically, when the driver or the passenger opens the door, when any door is in the open state, the controller detects the signal and inputs an opening signal of the pressure relief valve channel to the driving motor, the driving motor drives the driving shaft to rotate the second soundproof cover in the counterclockwise direction to completely open the soundproof device of the pressure relief valve. When the door needs to be closed, the pressure relief channel is completely opened, the gas resistance is minimized, the pressure relief valve blade is opened, and the closing pressure feeling is optimized.

[0053] In step S300, whether the air conditioner is in the external circulation state is determined according to the air conditioner control information, and if yes, step S400 is executed.

[0054] When all the doors are closed and the air conditioner is in the defrosting and demisting state, the air conditioner external circulation is opened, the controller still controls the driving motor to completely open the soundproof device of the pressure relief valve, and the defrosting and demisting effect is enhanced. The specific control strategy of the soundproof device of the pressure relief valve can be shown in the following table.

[0055] Air conditioner inside cycle Air conditioner outside cycle Car door open Second sound shield open Second sound shield open Car door closed Second sound shield closed Second sound shield open

[0056] In step S400, the second soundproof cover is controlled to be closed according to the preset position according to the vehicle speed information.

[0057] Specifically, when all the doors are closed and the vehicle is in the driving state, the controller detects the signal and inputs a closing signal of the pressure relief valve channel to the driving motor, the driving motor drives the driving shaft to rotate the second soundproof cover in the clockwise direction to completely close the soundproof device of the pressure relief valve. At this time, the tire noise, exhaust noise and other noises transmitted through the air are blocked by the soundproof cover, and the quietness in the vehicle is further improved.

[0058] It should be noted that, in order to more intelligently control the rotation angle of the second sound insulation cover, so as to achieve the balance of the internal and external pressure regulation effect and the sound insulation effect, first, a mapping model of each vehicle speed value and the corresponding target rotation position needs to be established, specifically, the control pressure relief valve blade is fully opened, and the second sound insulation cover is fully closed at the same time, then the target rotation position of the second sound insulation cover is recorded when the pressure relief valve blade is closed under the influence of different airflows at different vehicle speeds, and finally a mapping model is established according to each vehicle speed value and the corresponding target rotation position. When applied specifically, the real-time acquired vehicle speed value is input into the mapping model, and the corresponding rotation position is fed back in real time, the second sound insulation cover is controlled to open as much as possible, but not to reach the rotation position, so as to achieve the best air pressure balance effect and sound insulation effect.

[0059] To sum up, the vehicle pressure relief valve sound insulation device control method in the above-mentioned embodiments of the present application, by acquiring vehicle information, wherein the vehicle information at least includes door opening and closing information, air conditioning control information and vehicle speed information, according to the door opening and closing information, it is judged whether the door is closed, if yes, according to the air conditioning control information, it is judged whether the air conditioner is in the external circulation state, if yes, according to the vehicle speed information, the second sound insulation cover is controlled to close according to the preset position, so that the pressure relief valve sound insulation device adapts to various states of the vehicle, optimizes the in-vehicle noise and refrigeration / heating efficiency, and at the same time does not affect the door closing ear pressure feeling, has better functional applicability.

[0060] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] The above-described embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A method of controlling a sound insulating device for a pressure relief valve for a vehicle, characterized by, The vehicle pressure relief valve sound insulation device comprises a base, a first sound insulation cover fixedly connected with one end of the base, and a second sound insulation cover rotatably connected with the base, and the side of the base away from the first sound insulation cover and the second sound insulation cover is used for fixedly connecting with the pressure relief valve; The second sound insulation cover is arranged inside the first sound insulation cover, so that the second sound insulation cover moves in the space formed by the first sound insulation cover and the base under the action of the driving motor; The base extends a fixed part towards the first sound insulation cover, wherein a mounting hole is formed in the fixed part for arranging a driving shaft, one end of the driving shaft is fixedly connected with the second sound insulation cover, and the other end is connected with the driving motor through a gear, when the driving motor receives a rotating signal from the controller, the driving motor drives the driving shaft to rotate according to a preset rule through the gear, so that the second sound insulation cover rotates around the driving shaft and moves in the space formed by the first sound insulation cover and the base; The shapes of the first sound insulation cover and the second sound insulation cover are both arc-shaped; One end of the second sound insulation cover is always attached to the inner wall of the first sound insulation cover, when the vehicle pressure relief valve sound insulation device is in an incomplete closed state, there is a gap between the first sound insulation cover and the second sound insulation cover, and the gap gradually increases along the opening direction of the first sound insulation cover; The vehicle pressure relief valve sound insulation device control method comprises: Obtaining vehicle information, wherein the vehicle information at least comprises door opening and closing information, air conditioner control information and vehicle speed information; According to the door opening and closing information, it is judged whether the door is closed or not; If yes, according to the air conditioner control information, it is judged whether the air conditioner is in an external circulation state or not; If yes, according to the vehicle speed information, the second sound insulation cover is controlled to close according to a preset position.

2. The vehicle pressure relief valve sound isolation device control method according to claim 1, characterized by, The base is a frame structure matched with the pressure relief valve, buckles are arranged around the base, and the base is installed on the pressure relief valve through the buckles.

3. The vehicle pressure relief valve sound isolation device control method according to claim 2, characterized by, The side of the second sound insulation cover away from the first sound insulation cover is coated with sound absorbing material.

4. The vehicle pressure relief valve sound isolation device control method according to claim 3, characterized by The distance between any point on the first sound insulation cover and the center point of the driving shaft is the same, and the opening of the first sound insulation cover faces downward.

5. The method according to claim 4, wherein Before the step of judging that the air conditioner is in an external circulation state, and then controlling the driving motor to act on the second sound insulation cover according to the vehicle speed information, so that the second sound insulation cover closes according to a preset position, the following steps are included: The pressure relief valve blade is controlled to be fully opened, and the second sound insulation cover is controlled to be fully closed at the same time; The target rotating position of the second sound insulation cover when the pressure relief valve blade rotates under each vehicle speed value is obtained; A mapping model of each vehicle speed value and the corresponding target rotating position is established.

6. The vehicle pressure relief valve sound isolation device control method according to claim 5, characterized by The step of judging that the air conditioner is in an external circulation state, and then controlling the driving motor to act on the second sound insulation cover according to the vehicle speed information, so that the second sound insulation cover closes according to a preset position, comprises the following steps: The current vehicle speed value is obtained, and the current vehicle speed value is input into the mapping model to obtain the corresponding rotating position; According to the rotating position, the second sound insulation cover is controlled to be closed.

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