CN112901805A - Automatic opening device for large-area pressure release valve in vehicle - Google Patents

Automatic opening device for large-area pressure release valve in vehicle Download PDF

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Publication number
CN112901805A
CN112901805A CN202110113707.3A CN202110113707A CN112901805A CN 112901805 A CN112901805 A CN 112901805A CN 202110113707 A CN202110113707 A CN 202110113707A CN 112901805 A CN112901805 A CN 112901805A
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China
Prior art keywords
pressure relief
air pressure
pressure
vehicle
door
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Granted
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CN202110113707.3A
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Chinese (zh)
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CN112901805B (en
Inventor
陈永
李沛然
刘洋山
唐显
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China Automotive Engineering Research Institute Co Ltd
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China Automotive Engineering Research Institute Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/24—Devices purely for ventilating or where the heating or cooling is irrelevant
    • B60H1/241—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle
    • B60H1/244—Devices purely for ventilating or where the heating or cooling is irrelevant characterised by the location of ventilation devices in the vehicle located in the rear area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
    • B62D25/12—Parts or details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

本发明公开了一种车内大面积泄压阀自动打开装置，在汽车尾门上开有泄压孔，所述泄压孔外配有泄压盖板，泄压孔的左右两侧设置有两条平行的导轨，所述泄压盖板能在电动升降推杆的驱动下沿着导轨上下滑动，从而实现泄压孔的打开和关闭，所述电动升降推杆位于汽车尾门的内侧，电动升降推杆的下端铰接在泄压孔的下方，电动升降推杆的上端铰接在泄压盖板的中下部。结构简单、设计巧妙，摒弃了惯用的铰接安装翻转打开进行车内泄压的结构形式，创造性地采用电动升降推杆上下平行推动泄压板进行泄压，能实现泄压阀的匀速开启和关闭，消除了泄压阀打开回落产生撞击异响的问题，特别适用于车内大面积泄压。

Figure 202110113707

The invention discloses an automatic opening device for a large-area pressure relief valve in a vehicle. A pressure relief hole is opened on the tailgate of the vehicle. The pressure relief hole is provided with a pressure relief cover plate, and the left and right sides of the pressure relief hole are provided with Two parallel guide rails, the pressure relief cover plate can slide up and down along the guide rails under the drive of the electric lift push rod, so as to realize the opening and closing of the pressure relief hole, the electric lift push rod is located on the inner side of the tailgate of the car, The lower end of the electric lift push rod is hinged below the pressure relief hole, and the upper end of the electric lift push rod is hinged at the middle and lower part of the pressure relief cover. The structure is simple and the design is ingenious. It abandons the conventional structure of hinged installation and flipping open to relieve pressure in the car. It creatively adopts the electric lift push rod to push the pressure relief plate up and down in parallel to relieve the pressure, which can realize the uniform opening and closing of the pressure relief valve. It eliminates the problem of abnormal impact when the pressure relief valve opens and falls, and is especially suitable for large-area pressure relief in the car.

Figure 202110113707

Description

Automatic opening device for large-area pressure release valve in vehicle
Technical Field
The invention relates to the technical field of automobile parts, in particular to an automatic opening device of an in-automobile pressure relief valve, which is particularly suitable for automobiles with large-area pressure relief.
Background
The pressure relief valve in the automobile is arranged on the tail door of the automobile, a pressure relief hole is formed in the tail door, and the pressure relief hole is hinged to the pressure relief valve. The hinged pressure relief valve automatically opens when the pressure inside the vehicle is greater than the pressure outside the vehicle, particularly at the moment the door opens. But because the relief valve can fall back on the tail gate automatically after being opened, thereby generating larger impact abnormal sound.
The larger the pressure in the vehicle is, the larger the overturning opening angle of the pressure release valve is, and the larger the impact abnormal sound is during the fall back; in order to eliminate the impact abnormal sound, various means such as noise reduction cotton and felt are adopted, but the effect is not ideal. Simultaneously, for realizing quick pressure release, adopt great pressure release hole and be equipped with big pressure release valve, the big striking abnormal sound when falling back of quality is also big more, consequently present pressure release hole's size should not too big yet to be not suitable for large tracts of land pressure release, if need large tracts of land pressure release, often adopt the structural style who sets up a plurality of pressure release holes.
Disclosure of Invention
The invention aims to provide an automatic opening device for a large-area pressure relief valve in a vehicle, which can realize the uniform opening and closing of the pressure relief valve, eliminate the problem of impact abnormal sound caused by the falling of the opened pressure relief valve and is particularly suitable for large-area pressure relief in the vehicle.
Therefore, the technical scheme adopted by the invention is as follows: an automatic opening device for a large-area pressure release valve in an automobile is characterized in that a pressure release hole is formed in an automobile tail door, a pressure release cover plate is arranged outside the pressure release hole, two parallel guide rails are arranged on the left side and the right side of the pressure release hole, the pressure release cover plate can slide up and down along the guide rails under the driving of an electric lifting push rod, so that the pressure release hole is opened and closed, the electric lifting push rod is located on the inner side of the automobile tail door, the lower end of the electric lifting push rod is hinged below the pressure release hole, and the upper end of the electric lifting push rod is hinged to the middle lower portion of; a sinking platform is punched at the position, opposite to the guide rail, of the automobile tail door, the guide rail is installed in the sinking platform, and the depth of the sinking platform is required to ensure that the pressure relief cover plate can freely move on the guide rail;
the automobile door position is provided with a door sensor for detecting the opening and closing of the door, the door sensor is linked with an electric lifting push rod, when the door is opened, the electric lifting push rod pushes the pressure relief cover plate upwards to an opened state, and when the door is closed, the electric lifting push rod pushes the pressure relief cover plate downwards to a closed state;
the automobile is equipped with pressure sensor in the car, and this pressure sensor in the car linkage electric lift push rod, and when door pressure exceeded the setting value, electric lift push rod upwards pushed the pressure release apron to the open mode, and when door pressure equals or equals the setting value, electric lift push rod pushed the pressure release apron downwards to the closed mode.
The invention has the beneficial effects that: simple structure, design benefit have abandoned the structural style that conventional articulated installation upset was opened and is carried out the interior pressure release of car, creatively adopt electric lift push rod parallel promotion pressure release board from top to bottom to carry out the pressure release, can realize opening at the uniform velocity and closing of relief valve, have eliminated the relief valve and have opened the problem that falls back and produce the striking abnormal sound, and the large tracts of land pressure release need not set up a plurality of relief valves in the specially adapted car. Simultaneously, the sinking platform is additionally arranged, so that a certain gap is formed between the pressure relief plate and the car tail door after the pressure relief plate is installed, the guide rail can move freely, and the pressure relief plate is almost attached to the car tail door visually, and is attractive and elegant. The rectangular sealing ring is installed by means of the two guide rails, the design position is ingenious, and the sealing effect is good.
Drawings
FIG. 1 is a schematic structural diagram of the closed state of the present invention.
FIG. 2 is a schematic structural diagram of the open state of the present invention.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
with reference to fig. 1-2, an automatic opening device for a large-area pressure relief valve in a vehicle is provided with a pressure relief hole 1a formed in a tail door 1 of the vehicle, and a pressure relief cover plate 2 is arranged outside the pressure relief hole 1 a.
The left and right sides of pressure release hole 1a is provided with the guide rail 3 of two parallels, and pressure release apron 2 can slide from top to bottom along guide rail 3 under electric lift push rod 4's drive to realize opening and closing of pressure release hole 1a, electric lift push rod 4 is located the inboard of car tail-gate 1, and electric lift push rod 4's lower extreme articulates in the below of pressure release hole 1a, and electric lift push rod 4's upper end articulates in the well lower part of pressure release apron 2.
Preferably, a sinking platform is punched at the position, opposite to the guide rail 3, on the automobile tail door 1, the guide rail 3 is installed in the sinking platform, and the depth of the sinking platform is required to ensure that the pressure relief cover plate 2 can freely move on the guide rail 3.
In addition, a rectangular sealing ring 5 is also arranged, and the rectangular sealing ring 5 just sleeves the two guide rails 3.
It may be that a door sensor for detecting opening and closing of the door is provided at the door position of the vehicle, and the door sensor is linked with the electric lift push rod 4, when the door is opened, the electric lift push rod 4 pushes the pressure release cover plate 2 upward to an open state, and when the door is closed, the electric lift push rod 4 pushes the pressure release cover plate 2 downward to a closed state.
Or, the automobile is equipped with an in-vehicle pressure sensor, and the in-vehicle pressure sensor is linked with the electric lifting push rod 4, when the pressure of the door exceeds a set value, the electric lifting push rod 4 pushes the pressure relief cover plate 2 upwards to an open state, and when the pressure of the door is equal to or equal to the set value, the electric lifting push rod 4 pushes the pressure relief cover plate 2 downwards to a closed state.
The automatic opening device of the large-area pressure relief valve in the automobile is used as a pressure relief device arranged on the automobile body, and is used for automatically controlling the opening of the pressure relief valve by combining a pressure relief device controller and an automobile door sensing module which is arranged at each automobile door and used for sensing the opening and closing of the automobile door or/and an air pressure monitoring module used for sensing the air pressure in the automobile; in this embodiment, the door sensing module is a pressure sensor, and the air pressure monitoring module is an in-vehicle air pressure sensor.
The vehicle door sensing signal output end of the vehicle door sensing module is connected with the vehicle door sensing signal input end of the controller, the air pressure data output end of the air pressure monitoring module is connected with the air pressure data input end of the pressure relief device controller, and the control output end of the pressure relief device controller is connected with the control input end of the pressure relief device; its door response module that sets up in each door department, be door front left side response module respectively, right side response module before the door, left side response module behind the door, right side response module behind the door, the door response signal output part of left side response module links to each other with the front left door response signal input part of controller before the door, the door response signal output part of right side response module before the door links to each other with the front right door response signal input part of controller, the door response signal output part of left side response module behind the door links to each other with the back left door response signal input part of controller, the door response signal output part of right side response module behind the door links to each other with the back right door response signal input part of controller.
When the vehicle door sensing module senses that the vehicle door is opened or closed, or the air pressure monitoring module monitors that the air pressure in the vehicle is larger than or equal to a preset air pressure first threshold value, or the air pressure monitoring module monitors that the air pressure in the vehicle is smaller than or equal to a preset air pressure second threshold value, and the preset air pressure first threshold value is larger than a preset air pressure second threshold value, the pressure relief device controller sends a control signal to the pressure relief device to control the pressure relief device to open the pressure relief hole.
In a preferred embodiment of the invention, the pressure relief device further comprises a wireless transceiver module of the pressure relief device, wherein a wireless transceiver data end of the wireless transceiver module of the pressure relief device is connected with a wireless transceiver data end of a controller of the pressure relief device;
the vehicle door induction module comprises a vehicle door induction sensor, a vehicle door induction sensor wireless transceiver module and a vehicle door induction sensor controller; the wireless transceiving data end of the vehicle door induction sensor controller is connected with the wireless transceiving data end of the vehicle door induction sensor wireless transceiving module;
the vehicle door sensor controller sends a vehicle door opening or closing signal sensed by the vehicle door sensor to the vehicle-mounted controller through the vehicle door sensor wireless transceiver module, the vehicle-mounted controller receives the vehicle door opening or closing signal sent by the vehicle door sensor module through the vehicle-mounted wireless transceiver module, after the vehicle-mounted controller receives the vehicle door opening or closing signal sent by the vehicle door sensor module, the vehicle-mounted controller sends a pressure relief device opening control signal to the pressure relief device controller through the vehicle-mounted wireless transceiver module, the pressure relief device controller receives a pressure relief device opening control signal sent by the vehicle-mounted controller through the pressure relief device wireless transceiver module, after the pressure relief device controller receives the pressure relief device opening control signal sent by the vehicle-mounted controller, the pressure relief device controller sends a control signal to the pressure relief device to control the pressure relief device to open the pressure relief hole, the air pressure in the vehicle is balanced with the air pressure outside the vehicle;
the air pressure monitoring module comprises an air pressure monitoring sensor, an air pressure monitoring sensor wireless transceiving module and an air pressure monitoring sensor controller, wherein the air pressure data output end of the air pressure monitoring module is connected with the air pressure data input end of the air pressure monitoring sensor controller, and the wireless transceiving data end of the air pressure monitoring sensor controller is connected with the wireless transceiving data end of the air pressure monitoring sensor wireless transceiving module;
the vehicle-mounted controller receives the vehicle internal air pressure sent by the air pressure monitoring module through the vehicle-mounted wireless transceiver module, and compares the received vehicle internal air pressure with a preset air pressure first threshold value and a preset air pressure second threshold value within a certain range:
if the in-vehicle air pressure received by the in-vehicle controller is greater than or equal to a preset air pressure first threshold value, or the in-vehicle air pressure received by the in-vehicle controller is less than or equal to a preset air pressure second threshold value, the in-vehicle controller sends a pressure relief device opening control signal to the pressure relief device controller through the in-vehicle wireless transceiver module, the pressure relief device controller receives the pressure relief device opening control signal sent by the in-vehicle controller through the pressure relief device wireless transceiver module, and after the pressure relief device controller receives the pressure relief device opening control signal sent by the in-vehicle controller, the pressure relief device controller sends the opening control signal to the pressure relief device to control the pressure relief device to open a pressure relief hole, so that the in-vehicle air pressure is balanced with the out;
if the in-vehicle air pressure received by the in-vehicle controller is less than or equal to the third preset air pressure threshold value, and the in-vehicle air pressure received by the in-vehicle controller is greater than or equal to the fourth preset air pressure threshold value, the fourth preset air pressure threshold value is less than the third preset air pressure threshold value, and the third threshold value of the preset air pressure is smaller than the first threshold value of the preset air pressure, the fourth threshold value of the preset air pressure is smaller than the second threshold value of the preset air pressure, then the vehicle-mounted controller sends a control signal for closing the pressure relief device to the pressure relief device controller through the vehicle-mounted wireless transceiver module, the pressure relief device controller receives the control signal for closing the pressure relief device sent by the vehicle-mounted controller through the wireless transceiver module of the pressure relief device, after the pressure relief device controller receives the control signal for closing the pressure relief device sent by the vehicle-mounted controller, the pressure relief device controller sends a closing control signal to the pressure relief device to control the pressure relief device to close the pressure relief hole.
In a preferred embodiment of the invention, the system further comprises an air pressure monitoring module outside the vehicle, wherein the air pressure monitoring module is used for sensing the air pressure outside the vehicle;
the air pressure data output end of the air pressure monitoring module outside the vehicle is connected with the air pressure data input end outside the vehicle of the pressure relief device controller, and the air pressure monitored by the air pressure monitoring module outside the vehicle is between the third preset air pressure threshold value and the fourth preset air pressure threshold value.
In a preferred embodiment of the invention, the external air pressure monitoring module comprises an external air pressure monitoring sensor, an external air pressure monitoring sensor wireless transceiver module and an external air pressure monitoring sensor controller, wherein an air pressure data output end of the external air pressure monitoring module is connected with an air pressure data input end of the external air pressure monitoring sensor controller, and a wireless transceiver data end of the external air pressure monitoring sensor controller is connected with a wireless transceiver data end of the external air pressure monitoring sensor wireless transceiver module;
the external air pressure monitoring sensor controller sends the external air pressure sensed by the external air pressure monitoring sensor to the vehicle-mounted controller through the external air pressure monitoring sensor wireless transceiver module, the vehicle-mounted controller receives the external air pressure sent by the external air pressure monitoring module through the vehicle-mounted wireless transceiver module, and after the vehicle-mounted controller receives the external air pressure sent by the external air pressure monitoring module, the vehicle-mounted controller updates the first preset air pressure threshold value to the fourth preset air pressure threshold value.
In a preferred embodiment of the present invention, the method for updating the first threshold value of the preset air pressure to the fourth threshold value of the preset air pressure by the vehicle-mounted controller comprises:
the updating method of the first preset air pressure threshold value comprises the following steps:
P1＝P0+Xmax，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P1a first threshold value representing a preset air pressure;
Xmaxrepresents a preset maximum open threshold;
the updating method of the second preset air pressure threshold value comprises the following steps:
P2＝P0-Xmin，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P2a second threshold value representing a preset air pressure;
Xminrepresents a preset open minimum threshold;
the updating method of the third preset air pressure threshold value comprises the following steps:
P3＝P0+Xmax′，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P3a third threshold value representing a preset air pressure;
Xmax' represents a preset shut-off maximum threshold;
the updating method of the fourth preset air pressure threshold value comprises the following steps:
P4＝P0-Xmin′，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P4a fourth threshold value representing a preset air pressure;
Xmin' denotes a preset shut down minimum threshold.
In a preferred embodiment of the present invention, a sinking platform is punched on the position of the car tail gate 1 facing the guide rail 3, the guide rail 3 is installed in the sinking platform, and the depth of the sinking platform is to ensure that the pressure relief cover plate 2 can move freely on the guide rail 3.
In a preferred embodiment of the invention, a rectangular sealing ring 5 is also provided, which rectangular sealing ring 5 just fits two guide rails 3 in between.
The invention also discloses an automatic opening method of the large-area pressure release valve in the vehicle, which comprises the following steps:
s1, when the vehicle door sensing module senses that the vehicle door is closed (to be closed), the pressure relief device controller sends a descending pushing control command to the electric lifting push rod, and the electric lifting push rod drives the pressure relief cover plate to open (open) the pressure relief hole;
s2, the vehicle-mounted controller sends an order of collecting the air pressure outside the vehicle to the air pressure monitoring module outside the vehicle, the vehicle-mounted controller updates the third threshold value of the preset air pressure and the fourth threshold value of the preset air pressure after receiving the air pressure data outside the vehicle sent by the air pressure monitoring module outside the vehicle, and the method for updating the third threshold value of the preset air pressure and the fourth threshold value of the preset air pressure comprises the following steps:
the updating method of the third preset air pressure threshold value comprises the following steps:
P3＝P0+Xmax′，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P3a third threshold value representing a preset air pressure;
Xmax' represents a preset shut-off maximum threshold;
the updating method of the fourth preset air pressure threshold value comprises the following steps:
P4＝P0-Xmin′，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P4a fourth threshold value representing a preset air pressure;
Xmin' denotes a preset shut down minimum threshold.
S3, the vehicle-mounted controller sends an order of collecting the air pressure in the vehicle to the air pressure monitoring module, and after the vehicle-mounted controller receives the air pressure data in the vehicle sent by the air pressure monitoring module, the received air pressure in the vehicle is compared with a third threshold value of the preset air pressure and a fourth threshold value of the preset air pressure:
if the received air pressure in the vehicle is smaller than or equal to the third preset air pressure threshold and the received air pressure in the vehicle is larger than or equal to the fourth preset air pressure threshold, the vehicle-mounted controller sends a pressure relief hole closing control command to the pressure relief device controller; after the pressure relief device controller receives a pressure relief hole closing control command sent by the vehicle-mounted controller, the pressure relief device controller sends an ascending pushing control command to the electric lifting push rod, and the electric lifting push rod drives the pressure relief cover plate to close (seal) the pressure relief hole;
if the received in-vehicle air pressure is greater than the third threshold value of the preset air pressure, or the received in-vehicle air pressure is less than the fourth threshold value of the preset air pressure, returning to the step S3;
s4, when the automobile runs or stops, the vehicle-mounted controller sends an order of collecting the air pressure outside the automobile to the air pressure outside the automobile monitoring module, after the vehicle-mounted controller receives the air pressure outside the automobile sent by the air pressure outside the automobile monitoring module, the preset air pressure first threshold value-the preset air pressure fourth threshold value are updated, and the method for updating the preset air pressure first threshold value-the preset air pressure fourth threshold value comprises the following steps:
the updating method of the first preset air pressure threshold value comprises the following steps:
P1＝P0+Xmax，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P1a first threshold value representing a preset air pressure;
Xmaxrepresents a preset maximum open threshold;
the updating method of the second preset air pressure threshold value comprises the following steps:
P2＝P0-Xmin，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P2a second threshold value representing a preset air pressure;
Xminrepresents a preset open minimum threshold;
the updating method of the third preset air pressure threshold value comprises the following steps:
P3＝P0+Xmax′，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P3a third threshold value representing a preset air pressure;
Xmax' represents a preset shut-off maximum threshold;
the updating method of the fourth preset air pressure threshold value comprises the following steps:
P4＝P0-Xmin′，
wherein, P0The external air pressure sent by the external air pressure monitoring module received by the vehicle-mounted controller is represented;
P4a fourth threshold value representing a preset air pressure;
Xmin' represents a preset shut-off minimum threshold;
the vehicle-mounted controller sends a vehicle internal air pressure acquisition command to the air pressure monitoring module, and after receiving vehicle internal air pressure data sent by the air pressure monitoring module, the vehicle-mounted controller compares the received vehicle internal air pressure with a first preset air pressure threshold value to a fourth preset air pressure threshold value:
if the received air pressure in the vehicle is smaller than or equal to the preset air pressure second threshold value or the received air pressure in the vehicle is larger than or equal to the preset air pressure first threshold value, the vehicle-mounted controller sends a pressure relief hole opening control command to the pressure relief device controller;
if the received air pressure in the vehicle is greater than a preset air pressure fourth threshold value and the received air pressure in the vehicle is smaller than a preset air pressure third threshold value, the vehicle-mounted controller sends a pressure relief hole closing control command to the pressure relief device controller;
s5, when the vehicle door sensing module senses that the vehicle door is opened (to be opened), the pressure relief device controller sends a descending pushing control command to the electric lifting push rod, and the electric lifting push rod drives the pressure relief cover plate to open the pressure relief hole; waiting for the door to close, the process returns to step S2.
In a preferred embodiment of the present invention, in one or any combination of steps S1 to S5, when the vehicle controller detects that at least one window is in an open state, the pressure relief hole is in a closed state when the vehicle door is opened or closed.

Claims (1)

1. The utility model provides an automatic opening device of large tracts of land relief valve in car, it has pressure release hole (1a), its characterized in that to open on car tail-gate (1): the automobile tail door is characterized in that a pressure relief cover plate (2) is arranged outside the pressure relief hole (1a), two parallel guide rails (3) are arranged on the left side and the right side of the pressure relief hole (1a), the pressure relief cover plate (2) can slide up and down along the guide rails (3) under the driving of an electric lifting push rod (4), so that the pressure relief hole (1a) is opened and closed, the electric lifting push rod (4) is located on the inner side of the automobile tail door (1), the lower end of the electric lifting push rod (4) is hinged below the pressure relief hole (1a), and the upper end of the electric lifting push rod (4) is hinged to the middle lower part of the pressure relief cover plate (2); a sinking platform is punched at the position, opposite to the guide rail (3), on the automobile tail door (1), the guide rail (3) is installed in the sinking platform, the depth of the sinking platform is required to ensure that the pressure relief cover plate (2) can freely move on the guide rail (3) and is also provided with a rectangular sealing ring (5), and the rectangular sealing ring (5) just sleeves the two guide rails (3);
the automobile door position is provided with a door sensor for detecting the opening and closing of the door, the door sensor is linked with an electric lifting push rod (4), when the door is opened, the electric lifting push rod (4) pushes the pressure relief cover plate (2) upwards to an opened state, and when the door is closed, the electric lifting push rod (4) pushes the pressure relief cover plate (2) downwards to a closed state;
the automobile is equipped with the car internal pressure sensor, and this car internal pressure sensor linkage electric lift push rod (4), when door pressure exceeded the setting value, electric lift push rod (4) upwards promoted pressure release apron (2) to the open mode, when door pressure equals or equals the setting value, electric lift push rod (4) downwards promoted pressure release apron (2) to the closed mode.
CN202110113707.3A 2021-01-27 2021-01-27 Automatic opening device for large-area pressure release valve in vehicle Active CN112901805B (en)

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US20130309956A1 (en) * 2007-09-30 2013-11-21 Ford Global Technologies, Llc Air Extractor to Relieve Changes in Air Pressure in Automobiles
CN104044539A (en) * 2013-03-14 2014-09-17 福特环球技术公司 Vehicle Door Closure Cabin Pressure Relief System
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KR101988800B1 (en) * 2018-07-17 2019-09-24 한국수력원자력 주식회사 Pipe isolation apparatus
CN209925634U (en) * 2019-01-23 2020-01-10 南京西普重型机械有限公司 Pressure-difference electric-control flap valve
CN210265911U (en) * 2019-07-22 2020-04-07 上海益鼎石化设备制造有限公司 Pneumatic control emergency relief valve
CN111664262A (en) * 2019-03-06 2020-09-15 宝钢工程技术集团有限公司 Sealing valve for LF furnace dust collecting hood
CN112248932A (en) * 2020-10-12 2021-01-22 合肥工业大学 Novel automobile door opening grading early warning feedback system based on millimeter wave radar

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2682734A1 (en) * 1991-10-16 1993-04-23 Electricite De France Monitoring of release pressure of steam generator safety valve - using computer to compare converted acoustic signals from a microphone with threshold value
CA2274425A1 (en) * 1998-06-08 1999-12-08 Blue Water Plastics, Inc. Pressure relief valve and method of manufacturing the same
JP2006056450A (en) * 2004-08-23 2006-03-02 Denso Corp Inside/outside air switching device for vehicle
CN101269619A (en) * 2007-03-19 2008-09-24 现代自动车株式会社 Device and method for controlling air-pressure in bus
US20130309956A1 (en) * 2007-09-30 2013-11-21 Ford Global Technologies, Llc Air Extractor to Relieve Changes in Air Pressure in Automobiles
CN103062426A (en) * 2012-09-25 2013-04-24 湖南金中环保设备有限责任公司 Toxic smoke safety shutoff valve
CN104044539A (en) * 2013-03-14 2014-09-17 福特环球技术公司 Vehicle Door Closure Cabin Pressure Relief System
CN105333183A (en) * 2015-11-19 2016-02-17 江西洪都航空工业集团有限责任公司 Actively-controlled safety valve
KR101988800B1 (en) * 2018-07-17 2019-09-24 한국수력원자력 주식회사 Pipe isolation apparatus
CN209925634U (en) * 2019-01-23 2020-01-10 南京西普重型机械有限公司 Pressure-difference electric-control flap valve
CN111664262A (en) * 2019-03-06 2020-09-15 宝钢工程技术集团有限公司 Sealing valve for LF furnace dust collecting hood
CN210265911U (en) * 2019-07-22 2020-04-07 上海益鼎石化设备制造有限公司 Pneumatic control emergency relief valve
CN112248932A (en) * 2020-10-12 2021-01-22 合肥工业大学 Novel automobile door opening grading early warning feedback system based on millimeter wave radar

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