Integrated automobile rear door anti-collision beam support

Abstract

The invention provides an integrated automobile rear door anti-collision beam support, and relates to the field of automobile collision protection devices, the integrated automobile rear door anti-collision beam support comprises a main body supporting frame, a lateral fixing support, a reinforcing inlay, a mounting seat and a fluid supporting container, and a penetrating cavity with the two sides penetrating and communicating is formed in the main body supporting frame. The shear thickening fluid is adopted as a core protection medium, dynamic response of collision protection is achieved through intelligent switching of fluid states, the fluid state is kept during low-speed impact to ensure normal opening and closing of the automobile door, the shear thickening fluid is instantly solidified to form a solid-like barrier during high-speed impact, and the energy dissipation efficiency is further improved; according to the anti-collision beam, the limitation of passive protection of a traditional anti-collision beam is remarkably optimized, real-time impact acceleration monitoring is achieved through the built-in piezoelectric type collision detection device, a collision grade three-level early warning mechanism is combined, then double-flash warning is automatically triggered, linkage of an emergency call system is achieved, and a complete active safety protection closed loop is formed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle collision protection devices, in particular to an integrated automobile rear door anti-collision beam bracket. Background Art

[0002] With the continuous improvement of requirements for automobile lightweighting and passive safety performance, the door anti-collision beam system, as a core component of side collision protection, faces higher challenges in its structural design and manufacturing process.

[0003] Although it can provide basic protection, it has the following limitations. In order to meet the side collision safety requirements, it is necessary to increase the cross-sectional size of the anti-collision beam or the thickness of the material to improve the strength, but this will lead to an increase in weight and affect fuel economy. Secondly, the space utilization rate is insufficient. The connection structure between the anti-collision beam and the inner door panel occupies a large space, which limits the size of the door opening and affects the convenience of passengers getting on and off the vehicle. Secondly, the traditional structure mainly absorbs energy through metal deformation in a collision, lacks a multi-stage buffer mechanism, and has limited ability to control the intrusion into the passenger compartment. Summary of the Invention

[0004] (1) Technical problems solved

[0005] In view of the deficiencies in the prior art, the present invention provides an integrated automobile rear door anti-collision beam bracket, which solves the problems raised in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an integrated automobile rear door anti-collision beam bracket, including a main support frame, a lateral fixed support, a reinforcement inlay, a mounting seat and a fluid support container, the main support frame is provided with a through cavity with two sides passing through and communicating, the four lateral fixed supports are respectively fixed to the top and bottom sides of the main support frame, the head end of the lateral fixed support on each side is fixed with a mechanical connection interface to achieve the effect of installation and connection, the fluid support container is fixed between the two walls in the through cavity, and one side of the main support frame is provided with a plurality of openings A threaded mounting interface with an opening facing outward, the mounting seat is installed on one side of the main support frame, the mounting seat and the threaded mounting interface on one side of the main support frame are installed and connected by threads, a fluid working chamber with an opening facing outward is provided in the mounting seat, two reinforcing inlays are provided in the fluid working chamber, the reinforcing inlays are fixedly provided on both sides of the fluid working chamber and are symmetrically arranged, the reinforcing inlays are regular hexagonal, two fluid bags are provided on the upper and lower sides of the fluid support container, the fluid bags on both sides are symmetrically arranged, and a shear thickening fluid is provided in the fluid bag.

[0008] Preferably, a buffer cavity opening outward is provided in the main support frames on both sides, the buffer cavity is in an elliptical ring shape, and a plurality of honeycomb pressure relief holes opening outward are provided on the upper and lower sides of the buffer cavity, and the honeycomb pressure relief holes are distributed in an array.

[0009] Preferably, a central fluid channel is provided at the center position of the fluid support container, which is connected to both sides. Vertical sealing isolation plates are provided in the buffer cavities on both sides. The sealing isolation plates close the opening of the central fluid channel inside the buffer cavity and enclose the buffer cavity into an elliptical ring-shaped cavity.

[0010] Preferably, stress sensing beams are fixedly provided on the upper and lower sides of the fluid working chamber, the stress sensing beams on both sides are symmetrically arranged, and stress sensors are installed on the side of the stress sensing beams on the upper and lower sides away from the fluid support container.

[0011] Preferably, a horizontal electrical signal receiver is installed on the back side of the stress sensing beam at a position corresponding to the stress sensor, and the electrical signal receiver is data-connected to the stress sensor. A signal transmission connector is installed on one side of the electrical signal receiver, and the signal transmission connector is data-connected to the electrical signal receiver.

[0012] Preferably, two vertical fluid-driven piston cylinders are fixedly provided in the central fluid channel, piston working cylinders are provided in the fluid-driven piston cylinders on both sides, and fluid transmission pipes are provided between the piston working cylinders and the fluid sacs.

[0013] Preferably, a fluid regulating piston capable of being raised and lowered is provided in the piston working cylinder, a fluid bag is fixedly provided on one side of the fluid regulating piston, a closing plate which has an isolation effect is fixedly provided on one side of the piston working cylinder, a telescopic propeller is fixedly provided in the closing plate, and the telescopic propeller is dynamically connected to the propulsion rod, and a discharge valve opening outward is further provided on one side of the piston working cylinder and close to the telescopic propeller.

[0014] Preferably, an ECU control module is installed at the head end of the fluid support container, and the ECU control module is connected to the telescopic thruster for signal control.

[0015] Preferably, a vertically erected central positioning column is fixed at the center position of the reinforcing inlay, a fluid storage cavity is provided in the central positioning column and the reinforcing inlay, a fluid compensation pipeline is connected to one side wall of the fluid storage cavity, and one end of the fluid compensation pipeline is connected to a side wall of the piston working cylinder.

[0016] Preferably, two collision alarm units are fixedly provided in the buffer cavity on a side away from the mounting seat.

[0017] (3) Beneficial effects

[0018] The present invention provides an integrated automobile rear door anti-collision beam bracket. It has the following beneficial effects:

[0019] 1. The present invention uses a shear-thickening fluid as the core protective medium, and realizes dynamic response of collision protection through intelligent switching of fluid state. During low-speed impact, the fluid state is maintained to ensure normal opening and closing of the vehicle door. During high-speed impact, it instantly solidifies to form a solid-like barrier, further improving the energy dissipation efficiency and significantly optimizing the limitations of the passive protection of traditional anti-collision beams.

[0020] 2. The present invention constructs a three-level protection system of "fluid sac-buffer cavity-honeycomb structure". The primary protection is that the fluid sac absorbs impact energy through deformation, the secondary buffering realizes impact force dispersion through the elliptical ring structure of the buffer cavity, and the tertiary protection forms a secondary impact protection network through the honeycomb pressure relief hole array.

[0021] 3. The present invention realizes real-time monitoring of impact acceleration through a built-in piezoelectric collision detection device, combined with a three-level early warning mechanism for collision levels, and then automatically triggers a double flash warning, realizes linkage with the emergency call system, and forms a complete active safety protection closed loop. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0023] Figure 2 This is the main view of the appearance structure of the present invention;

[0024] Figure 3 This is a perspective view of the appearance structure of the present invention;

[0025] Figure 4 This is a rear view of the appearance structure of the present invention;

[0026] Figure 5 This is a front view of the appearance structure of the present invention;

[0027] Figure 6 This is a side view of the appearance structure of the present invention;

[0028] Figure 7 For the present invention Figure 6 Cross-sectional view in the AA direction;

[0029] Figure 8 For the present invention Figure 6 Cross-sectional view in the middle BB direction;

[0030] Figure 9 Schematic diagram of the internal structure of the reinforced inlay component of the present invention.

[0031] Figure: 101, main support frame; 102, lateral fixed support; 103, stress sensing beam; 104, reinforcement inlay; 105, stress sensor; 106, fluid-driven piston cylinder; 107, mounting seat; 108, fluid working chamber; 109, central positioning column; 110, honeycomb pressure relief hole; 111, central fluid channel; 112, fluid compensation pipeline; 113, through cavity; 114, ECU control module; 115, fluid support container ; 116. Collision alarm unit; 117. Sealed isolation plate; 118. Buffer chamber; 120. Threaded mounting interface; 121. Electrical signal receiver; 122. Signal transmission connector; 123. Fluid sac; 124. Telescopic propeller; 125. Closing plate; 126. Propulsion rod; 127. Fluid regulating piston; 128. Fluid transmission pipe; 129. Discharge valve; 130. Fluid storage chamber; 131. Mechanical connection interface; 132. Piston working cylinder. DETAILED DESCRIPTION

[0032] The embodiment of the present invention provides an integrated automobile rear door anti-collision beam bracket, such as Figure 1-9 As shown, it includes a main support frame 101, a lateral fixed support 102, a reinforcement inlay 104, a mounting seat 107 and a fluid support container 115. The main support frame 101 is provided with a through cavity 113 that is connected on both sides. The four lateral fixed supports 102 are respectively fixed to the top and bottom sides of the main support frame 101. The head end of the lateral fixed support 102 on each side is fixed with a mechanical connection interface 131 to achieve the effect of installation and connection. The fluid support container 115 is fixed between the two walls in the through cavity 113. One side of the main support frame 101 is provided with several threaded mounting interfaces 120 with outward openings. The seat 107 is installed on one side of the main support frame 101, and the mounting seat 107 is connected to the threaded mounting interface 120 on one side of the main support frame 101 through a threaded installation. A fluid working chamber 108 with an outward opening is provided in the mounting seat 107, and two reinforcing inlays 104 are provided in the fluid working chamber 108. The reinforcing inlays 104 are fixed on both sides of the fluid working chamber 108 and are symmetrically arranged. The reinforcing inlays 104 are regular hexagonal, and two fluid capsules 123 are provided on the upper and lower sides of the fluid support container 115. The fluid capsules 123 on both sides are symmetrically arranged, and a shear thickening fluid is provided in the fluid capsules 123.

[0033] It should be further explained that shear-thickening fluids are commonly known as non-Newtonian fluids. Non-Newtonian fluids refer to fluids that do not satisfy Newton's experimental law of viscosity, that is, the relationship between their shear stress and shear strain rate is not linear. Their components are composed of dispersed phase particles (such as silica, starch, etc.) and dispersion media (such as polyethylene glycol, water, etc.).

[0034] It is worth further explaining that shear-thickening fluids behave as fluids at low shear rates, but rapidly harden under high shear rates or impact conditions, forming a solid-like barrier with excellent energy dissipation capabilities.

[0035] Furthermore, a buffer cavity 118 opening outward is provided in the main support frames 101 on both sides. The buffer cavity 118 is in an elliptical ring shape. Several honeycomb pressure relief holes 110 opening outward are provided on the upper and lower sides of the buffer cavity 118. The honeycomb pressure relief holes 110 are distributed in an array.

[0036] Furthermore, a central fluid channel 111 is provided at the center of the fluid support container 115, which is connected on both sides. Vertical sealing isolation plates 117 are provided in the buffer chambers 118 on both sides. The sealing isolation plates 117 close the opening of the central fluid channel 111 inside the buffer chamber 118 and enclose the buffer chamber 118 into an elliptical ring-shaped cavity.

[0037] It should be further explained that the positions of the honeycomb pressure relief holes 110 on each side correspond to the two side walls of the fluid sac 123. When the fluid sac 123 is squeezed and ruptured, the shear thickening fluid in the fluid sac 123 flows out through the honeycomb pressure relief holes 110 and flows into the buffer cavity 118.

[0038] Furthermore, stress sensing beams 103 are fixed on the upper and lower sides of the fluid working chamber 108. The stress sensing beams 103 on both sides are symmetrically arranged, and stress sensors 105 are installed on the side of the stress sensing beams 103 on the upper and lower sides away from the fluid support container 115.

[0039] Furthermore, a horizontal electrical signal receiver 121 is installed on the back of the stress sensing beam 103 at a position corresponding to the stress sensor 105, and the electrical signal receiver 121 is data-connected to the stress sensor 105. A signal transmission connector 122 is installed on one side of the electrical signal receiver 121, and the signal transmission connector 122 is data-connected to the electrical signal receiver 121.

[0040] It should be further explained that when the stress sensor 105 senses stress changes, it converts the stress change signal into an electrical signal through the data interaction mechanism between the electrical signal receiver 121 and the signal transmission connector 122, and transmits it to the vehicle central control unit in real time through the on-board CAN bus.

[0041] Furthermore, two vertical fluid-driven piston cylinders 106 are fixedly provided in the central fluid channel 111 , piston working cylinders 132 are provided in the fluid-driven piston cylinders 106 on both sides, and a fluid transmission tube 128 is provided between the piston working cylinder 132 and the fluid bag 123 .

[0042] It should be further explained that the piston cylinder 132 on one side is connected to the fluid bag 123 at the top through the fluid transmission tube 128 , and the piston cylinder 132 on the other side is connected to the fluid bag 123 below through the fluid transmission tube 128 .

[0043] Furthermore, a fluid regulating piston 127 capable of being raised and lowered is provided in the piston working cylinder 132, a fluid bag 123 is fixedly provided on one side of the fluid regulating piston 127, a closing plate 125 which has an isolation effect is fixedly provided on one side of the piston working cylinder 132, a telescopic propeller 124 is fixedly provided in the closing plate 125, and the telescopic propeller 124 is power-connected to the propulsion rod 126, and a discharge valve 129 opening outward is further provided on one side of the piston working cylinder 132 and close to the side of the telescopic propeller 124.

[0044] It should be further explained that when the telescopic propeller 124 is started, it can drive the propulsion rod 126 to move up and down, and further drive the fluid regulating piston 127 to move up and down in the piston working cylinder 132.

[0045] Furthermore, an ECU control module 114 is installed at the head end of the fluid support container 115 , and the ECU control module 114 is connected to the telescopic propeller 124 for signal control.

[0046] It should be further explained that the ECU control module 114 transmits information to the vehicle central control unit in real time via the vehicle-mounted CAN bus, and controls the telescopic thruster 124 to start via the ECU control module 114 .

[0047] Furthermore, a vertically erected central positioning column 109 is fixed at the center position of the reinforcing inlay 104, and a fluid storage chamber 130 is provided in the central positioning column 109 and the reinforcing inlay 104. A fluid compensation pipeline 112 is connected to one side wall of the fluid storage chamber 130, and one end of the fluid compensation pipeline 112 is connected to a side wall of the piston working cylinder 132.

[0048] It should be further explained that when the fluid regulating piston 127 moves up and down in the piston working cylinder 132, causing the volume of the piston working cylinder 132 to decrease, the shear thickening fluid stored in the piston working cylinder 132 flows into the fluid storage chamber 130 through the fluid compensation pipeline 112, and flows into the fluid bag 123 through the fluid transmission tube 128 to apply a preload force.

[0049] Furthermore, two collision alarm units 116 are fixedly installed in the buffer cavity 118 on the side away from the mounting seat 107.

[0050] It should be further explained that the collision alarm unit 116 is an alarm device. The piezoelectric acceleration sensor built into the collision alarm unit 116 alarm device detects the impact acceleration and sends a collision severity signal to the vehicle ECU through the signal transmission connector 122 wireless module, activating the double flash warning lights and the in-vehicle emergency call system.

[0051] When using this solution, the mounting seat 107 is installed to one side of the main support frame 101, and the central positioning column 109 is installed in the fluid working chamber 108. At this time, the other side of the main support frame 101 is connected inward to the mounting position of the rear door shell of the car, and shear thickening fluid is injected into the fluid sac 123 and the piston working cylinder 132, so that the shear thickening fluid fills the fluid sac 123, the piston working cylinder 132 and the fluid storage chamber 130.

[0052] At this time, the mechanical connection interface 131 is used to connect to the installation position of the rear door of the car, and then the ECU control module 114, the collision alarm unit 116, the stress sensor 105 and the electrical signal receiver 121 are installed to the working position, and the signal connection test is performed with the vehicle ECU through the signal transmission connector 122 to complete the preliminary installation work.

[0053] When the rear door of the vehicle is opened normally, as the rear door is opened, when the ECU control module 114 receives the door opening signal from the vehicle ECU, the ECU control module 114 transmits a signal and controls the telescopic thrusters 124 on both sides to start. At this time, when the telescopic thrusters 124 on both sides are started, they can drive the thrust rod 126 to move up and down, and then drive the fluid regulating piston 127 to move up and down in the piston working cylinder 132. When the fluid regulating piston 127 moves up and down in the piston working cylinder 132, causing the volume of the piston working cylinder 132 to increase, the shear thickening fluid stored in the fluid storage chamber 130 forms a directional reflux through the fluid compensation pipeline 112. At this time, the fluid inside the fluid bag 123 is replenished to the piston working cylinder 132 through the fluid transmission pipe 128, causing the total amount of fluid in the fluid bag 123 to decrease, thereby reducing the threshold value of its preload force, thereby facilitating the normal opening and closing of the door and getting on the vehicle during the use of the vehicle.

[0054] At the same time, in the process of opening and closing the door, if the door is slightly hit, such as being hit by a tool, or being pushed hard by humans, the stress sensor 105 senses that the tension of the stress sensing beam 103 supporting the door fluctuates violently. At this time, when the stress sensor 105 senses the stress change, it converts the stress change signal into an electrical signal through the data interaction mechanism between the electrical signal receiver 121 and the signal transmission connector 122, and transmits it to the vehicle central control unit in real time through the vehicle CAN bus. At this time, the vehicle ECU sends a control signal and controls the telescopic propellers 124 on both sides to start. At this time, when the telescopic propeller 124 is started, it can drive the propulsion rod 126 The fluid regulating piston 127 moves up and down in the piston working cylinder 132, and the fluid regulating piston 127 moves up and down in the piston working cylinder 132, causing the volume of the piston working cylinder 132 to decrease. At this time, the shear thickening fluid stored in the piston working cylinder 132 flows into the fluid storage chamber 130 through the fluid compensation line 112, and flows into the fluid bag 123 through the fluid transmission tube 128 to apply a preload. At this time, the density of the shear thickening fluid in the fluid storage chamber 130 increases, and its non-Newtonian fluid characteristics are significantly activated, thereby realizing an intelligent leap in collision protection performance, and through its anti-collision characteristics, enhancing the anti-deformation performance of the rear door.

[0055] When the rear door encounters a severe impact, if the rear door is deformed and damaged, if the fluid bag 123 is damaged due to deformation and the shear thickening fluid inside leaks, the shear thickening fluid will flow into the honeycomb pressure relief hole 110 through the damage, and the honeycomb pressure relief holes 110 in a honeycomb shape are arrayed to accommodate the leaked shear thickening fluid. The fluid filled in each unit of the honeycomb pressure relief hole 110 triggers a shear thickening effect under the action of the impact energy, and can continue to provide anti-collision protection for secondary impacts.

[0056] At the same time, when the rear door is severely hit, the built-in piezoelectric acceleration sensor of the collision alarm unit 116 alarm device detects the impact acceleration and sends a collision severity signal to the vehicle ECU through the signal transmission connector 122 wireless module, activating the double flash warning lights and the emergency call system in the vehicle.

[0057] This solution improves the impact energy absorption efficiency through a multi-stage curing mechanism, further increases the energy dissipation rate of a single impact, and significantly enhances the secondary impact protection capability.

[0058] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An integrated automobile rear door anti-collision beam bracket, comprising a main support frame, lateral fixed supports, a reinforcement inlay, a mounting seat, and a fluid support container, characterized by: The main support frame is provided with a through cavity that is connected on both sides, and the four lateral fixed supports are respectively fixed on the top and bottom sides of the main support frame. The head end of the lateral fixed support on each side is fixed with a mechanical connection interface to achieve the effect of installation and connection. The fluid support container is fixed between the two walls in the through cavity, and one side of the main support frame is provided with several threaded mounting interfaces with openings facing outward. The mounting seat is installed on one side of the main support frame, and the mounting seat and the threaded mounting interface on one side of the main support frame are installed and connected by threads. A fluid working chamber with an opening facing outward is provided in the mounting seat, and two reinforcing inlays are provided in the fluid working chamber. The reinforcing inlays are fixed on both sides of the fluid working chamber and are symmetrically arranged. Two fluid bags are provided on the upper and lower sides of the fluid support container, and the fluid bags on both sides are symmetrically arranged, and a shear thickening fluid is provided in the fluid bag.

2. The integrated automobile rear door anti-collision beam bracket according to claim 1, characterized in that: Buffer cavities opening outward are provided in the main support frames on both sides, and a plurality of honeycomb pressure relief holes opening outward are provided on the upper and lower sides of the buffer cavity, and the honeycomb pressure relief holes are distributed in an array.

3. The integrated automobile rear door anti-collision beam bracket according to claim 2, characterized in that: A central fluid channel is provided at the center of the fluid support container, which is connected on both sides. Sealing isolation plates are provided in the buffer cavities on both sides. The sealing isolation plates close the opening of the central fluid channel inside the buffer cavity and enclose the buffer cavity into a cavity.

4. The integrated automobile rear door anti-collision beam bracket according to claim 1, characterized in that: Stress sensing beams are fixedly provided on the upper and lower sides of the fluid working chamber. The stress sensing beams on both sides are symmetrically arranged. Stress sensors are installed on the side of the stress sensing beams on the upper and lower sides away from the fluid supporting container.

5. The integrated automobile rear door anti-collision beam bracket according to claim 4, characterized in that: An electrical signal receiver is installed at a position corresponding to the stress sensor on the back of the stress sensing beam, and the electrical signal receiver is data-connected to the stress sensor. A signal transmission connector is installed on one side of the electrical signal receiver, and the signal transmission connector is data-connected to the electrical signal receiver.

6. The integrated automobile rear door anti-collision beam bracket according to claim 3, characterized in that: Two fluid-driven piston cylinders are fixedly provided in the central fluid channel, piston working cylinders are provided in the fluid-driven piston cylinders on both sides, and a fluid transmission pipe is provided between the piston working cylinders and the fluid bag.

7. The integrated automobile rear door anti-collision beam bracket according to claim 6, characterized in that: A fluid regulating piston capable of being raised and lowered is provided in the piston working cylinder, a fluid bag is fixedly provided on one side of the fluid regulating piston, a closing plate is fixedly provided on one side of the piston working cylinder, a telescopic propeller is fixedly provided in the closing plate, and the telescopic propeller is dynamically connected to the propulsion rod. Furthermore, a discharge valve opening outward is provided on one side of the piston working cylinder and close to the telescopic propeller.

8. The integrated automobile rear door anti-collision beam bracket according to claim 7, characterized in that: An ECU control module is installed at the head end of the fluid support container, and the ECU control module is connected to the telescopic propeller for signal control.

9. The integrated automobile rear door anti-collision beam bracket according to claim 7, characterized in that: A vertically erected central positioning column is fixed at the center position of the reinforcing inlay, and a fluid storage cavity is provided in the central positioning column and the reinforcing inlay. A fluid compensation pipeline is connected to one side wall of the fluid storage cavity, and one end of the fluid compensation pipeline is connected to a side wall of the piston working cylinder.

10. The integrated automobile rear door anti-collision beam bracket according to claim 9, characterized in that: Two collision alarm units are fixedly provided in the buffer cavity at a side away from the mounting seat.

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