Intelligent front hatch cover pop-up protection device facing pedestrian head

By designing an intelligent pop-up protective device for the front hood, and using an electric push rod to drive the sliding plate and lifting plate structure, the front hood rotates and sinks down. Combined with the buffer layer to absorb energy, this solves the problem of serious injuries caused by pedestrian head impacts and achieves more efficient pedestrian protection.

CN121626019APending Publication Date: 2026-03-10ZHONGQIYAN AUTOMOBILE INSPECTION CENT (CHANGZHOU) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-26
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

In the event of a collision between a vehicle and a pedestrian, the traditional hood can easily cause serious injury to the pedestrian's head by impacting the hood. Existing technology is unable to meet increasingly stringent pedestrian protection safety standards.

Method used

Design an intelligent pop-up protective device for the front hatch. Drive the sliding plate and lifting plate structure with an electric push rod to make the front hatch rotate and sink. Combined with a foamed sponge buffer layer and a buffer ball cylinder, it absorbs the impact energy and reduces the degree of injury.

Benefits of technology

It effectively reduces direct collisions between pedestrians' heads and hard components, absorbs impact through a buffer structure, significantly reduces the degree of injury, and improves pedestrian protection.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses an intelligent front hatch cover pop-up protection device facing the head of a pedestrian, which comprises a mounting plate, an engine front hatch cover is arranged above the mounting plate, a bracket is arranged between the engine front hatch cover and the mounting plate, the bottom of the engine front hatch cover is fixedly connected with a top plate, and the top plate is rotatably connected to the top of the bracket; a bottom plate is fixedly connected to the bottom of the support and rotationally connected to the top of the mounting plate, and a bounce protection mechanism is arranged at the bottom of the support. The bounce protection mechanism comprises an L-shaped base, an L-shaped round rod, a first lifting plate, a guide round rod, a guide plate and a vertical plate, the protection effect on the head of a pedestrian is remarkably improved through the bounce protection mechanism, when a vehicle collides with the pedestrian, the rear end of the engine front cabin cover bounces instantly, a buffer space is formed, and the safety of the pedestrian is improved. The head of a pedestrian is conveniently prevented from directly colliding with hard objects such as an engine and a gearbox, so that the injury degree is greatly reduced.
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Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile front hood, in particular to an intelligent front hood pop-up protection device for pedestrian head. BACKGROUND

[0002] The automobile front hood, also known as the engine hood, is a rigid protective cover plate covering the outside of the vehicle engine compartment, usually hinged to the front of the vehicle body through a hinge, and has the functions of protecting the core components such as the engine and transmission from external impact and dust erosion, and bearing the important role of vehicle appearance design. In the passive safety system of the automobile, the structure design and buffering performance of the front hood directly affect the degree of injury to the personnel when the vehicle collides with the pedestrian.

[0003] In the prior art, the traditional front hood is usually made of a rigid metal plate in one piece, and the gap between the cover plate and the rigid components inside the engine compartment is very small. When the vehicle collides with the pedestrian, the pedestrian's legs are hit and the body is flipped forward, and the head is easily hit in the area close to the windshield of the front hood. The impact force is directly transmitted to the hard components such as the engine, which causes the pedestrian's head to bear a large impact force and causes serious injury, which is difficult to meet the increasingly stringent pedestrian protection safety standards. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present application provides an intelligent front hood pop-up protection device for pedestrian head, which effectively solves the problem that the pedestrian's head is easily hit by the front hood when the vehicle collides with the pedestrian.

[0005] To achieve the above purpose, the present application provides the following technical scheme: an intelligent front hood pop-up protection device for pedestrian head, comprising a mounting plate, an engine front hood is arranged above the mounting plate, a bracket is arranged between the engine front hood and the mounting plate, a top plate is fixedly connected to the bottom of the engine front hood, the top plate is rotatably connected to the top of the bracket, a bottom plate is fixedly connected to the bottom of the bracket, the bottom plate is rotatably connected to the top of the mounting plate, and a pop-up protection mechanism is arranged at the bottom of the bracket.

[0006] The pop-up protection mechanism comprises an L-shaped seat, an L-shaped round rod, a lifting plate one, a guide round rod, a guide plate and a vertical plate; the L-shaped seat is located below the bracket, two L-shaped round rods are symmetrically fixedly connected to the inner side of the L-shaped seat, the lifting plate one is movably sleeved between the two L-shaped round rods, the vertical plate is fixedly connected to the top of the lifting plate one, two guide round rods are symmetrically fixedly connected to the bottom of the bracket, the guide plate is movably sleeved between the two guide round rods, and the vertical plate is rotatably connected to the bottom of the guide plate.

[0007] Preferably, the lifting plate one is provided with a lifting plate two below, the lifting plate two is movably sleeved on the outer sides of the two L-shaped round rods, the top of the lifting plate two is fixedly connected with two vertical columns in symmetry, the two vertical columns are both penetrated through the lifting plate one and movably connected with the lifting plate one, the outer sides of the two vertical columns are both fixedly sleeved with outer rings, the top of the two outer rings and the bottom of the lifting plate one are both fixedly connected with buffer springs, and the two buffer springs are respectively sleeved on the outer sides of the two vertical columns.

[0008] Preferably, a sliding plate is movably sleeved between the two L-shaped round rods, and the bottom of the sliding plate is rotatably connected with two movable rods in symmetry.

[0009] Preferably, the inner side of the L-shaped seat is fixedly installed with an electric push rod, and the sliding plate is fixed on the output end of the electric push rod.

[0010] Preferably, the outer side of the sliding plate is fixedly connected with a penetrating rod, and the penetrating rod penetrates through the lifting plate one.

[0011] Preferably, the top of the two outer rings is fixedly connected with buffer cylinders, the two buffer cylinders are respectively located on the outer sides of the two buffer springs, and the two buffer cylinders are both located below the lifting plate one.

[0012] Preferably, the top of the two vertical columns is fixedly connected with buffer rods, the top of the two buffer rods is fixedly connected with buffer balls, the two buffer balls are both located below the foamed sponge buffer layer, and the buffer ball and the buffer cylinder are both made of rubber material.

[0013] Preferably, the middle of the lifting plate one is provided with a through hole, the inner side of the through hole is fixedly connected with two inner annular groove bodies in symmetry, and the penetrating rod penetrates through the two inner annular groove bodies.

[0014] Preferably, the inner side of the two inner annular groove bodies is provided with a plurality of ball bearings at equal angles, and each ball bearing is abutted on the outer wall of the penetrating rod.

[0015] Preferably, the bottom of the engine front hatch cover is fixedly connected with a foamed sponge buffer layer.

[0016] Compared with the prior art, the present application has the following beneficial effects:

[0017] 1. The application can drive the sliding plate to slide along the two L-shaped round rods by starting the electric push rod, which is convenient for the through rod to be separated from the lifting plate 1 to release the restriction effect on the lifting plate 1, and at the same time, the lifting plate 2 can be lifted, the lifting plate 1 is lifted under the action of the elastic force of the two buffer springs, and the support and the engine front hatch cover are rotated through the vertical plate, which is convenient for the rear end of the engine front hatch cover to pop up, the engine front hatch cover can be slightly sunken to absorb the impact force of the impact through the two buffer springs, and the foamed sponge buffer layer is deformed to directly absorb the impact energy, so that the pedestrian's head is directly hit on the hard objects such as the engine and the gearbox to greatly reduce the damage degree.

[0018] 2. The application sets the buffer cylinder on the top of the two outer rings, when the engine front hatch cover is hit by the pedestrian, the lifting plate 1 is lowered to hit the two buffer cylinders, and at the same time, the foamed sponge buffer layer is moved to hit the two buffer balls, so that the buffer cylinder and the buffer ball can absorb the impact energy through deformation, thereby further reducing the risk of serious injury.

[0019] 3. The application sets the through hole, the inner ring groove and the ball, avoids the direct contact between the through rod and the lifting plate 1, thereby reducing the friction force suffered by the through rod and the lifting plate 1 during the separation process, ensuring that the pop-up protection mechanism moves more smoothly, avoiding the influence of mechanical jamming on the protection timeliness, and improving the system response reliability. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the application, and constitute a part of the specification, together with the embodiments of the application, to explain the application, and do not constitute a limitation on the application.

[0021] In the drawings:

[0022] Figure 1 It is a structure schematic view of the intelligent front hatch cover pop-up protection device for pedestrian head of the application;

[0023] Figure 2 It is a structure schematic view of the engine front hatch cover of the application;

[0024] Figure 3 It is a structure schematic view of the pop-up protection mechanism of the application;

[0025] Figure 4 It is a structure schematic view of the L-shaped round rod of the application;

[0026] Figure 5 It is a structure schematic view of the connection between the lifting plate 1 and the lifting plate 2 of the application;

[0027] Figure 6 It is a structure schematic view of the lifting plate 1 of the application;

[0028] Numbered in the diagram: 1. Mounting plate; 2. Pop-up protection mechanism; 201. L-shaped seat; 202. L-shaped round rod; 203. Lifting plate one; 204. Guide round rod; 205. Guide plate; 206. Vertical plate; 207. Slide plate; 208. Electric push rod; 209. Movable rod; 2010. Through rod; 2011. Lifting plate two; 2012. Column; 2013. Buffer ball; 2014. Buffer rod; 2015. Buffer spring; 2016. Outer ring; 2017. Buffer cylinder; 2018. Through hole; 2019. Inner annular groove; 2020. Ball bearing; 3. Engine front cover; 4. Foamed sponge buffer layer; 5. Top plate; 6. Bottom plate; 7. Bracket. Detailed Implementation

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] Example 1: As Figures 1-6 As shown, the present invention provides an intelligent hood pop-up protection device facing the pedestrian's head, including a mounting plate 1, an engine hood 3 above the mounting plate 1, a bracket 7 between the engine hood 3 and the mounting plate 1, a top plate 5 fixedly connected to the bottom of the engine hood 3, the top plate 5 being rotatably connected to the top of the bracket 7, a bottom plate 6 fixedly connected to the bottom of the bracket 7, the bottom plate 6 being rotatably connected to the top of the mounting plate 1, and a pop-up protection mechanism 2 at the bottom of the bracket 7.

[0031] The embodiment 2 is based on the embodiment 1, the pop-up protection mechanism 2 comprises an L-shaped seat 201 below the support 7, the inner side of the L-shaped seat 201 is fixedly connected with two L-shaped round rods 202 in symmetry, a lifting plate one 203 is movably sleeved between the two L-shaped round rods 202, the top of the lifting plate one 203 is fixedly connected with a vertical plate 206, the bottom of the support 7 is fixedly connected with two guide round rods 204 in symmetry, a guide plate 205 is movably sleeved between the two guide round rods 204, the top of the vertical plate 206 is rotatably connected to the bottom of the guide plate 205, and the bottom of the engine front hood 3 is fixedly connected with a foamed sponge buffer layer 4; wherein, a lifting plate two 2011 is arranged below the lifting plate one 203, the lifting plate two 2011 is movably sleeved to the outer side of the two L-shaped round rods 202, the top of the lifting plate two 2011 is fixedly connected with two vertical columns 2012 in symmetry, the two vertical columns 2012 are both penetrated through the lifting plate one 203 and movably connected with the lifting plate one 203, the outer side of the two vertical columns 2012 is fixedly sleeved with an outer ring 2016, the top of the two outer rings 2016 and the bottom of the lifting plate one 203 are both fixedly connected with a buffer spring 2015, the two buffer springs 2015 are respectively sleeved to the outer side of the two vertical columns 2012, a sliding plate 207 is movably sleeved between the two L-shaped round rods 202, the bottom of the sliding plate 207 is rotatably connected with two movable rods 209 in symmetry, the bottom of the two movable rods 209 is rotatably connected to the outer side of the lifting plate two 2011, the inner side of the L-shaped seat 201 is fixedly installed with an electric push rod 208, the sliding plate 207 is fixed to the output end of the electric push rod 208, the outer side of the sliding plate 207 is fixedly connected with a penetrating rod 2010, and the penetrating rod 2010 penetrates through the lifting plate one 203.

[0032] Specifically, when the vehicle collides with the pedestrian, the control system of the device immediately controls the electric push rod 208 to start, drives the sliding plate 207 to slide along the two L-shaped round rods 202, simultaneously, the penetrating rod 2010 moves horizontally, drives the lifting plate two 2011 to slide upwards along the two L-shaped round rods 202 through the two movable rods 209, simultaneously, the two vertical columns 2012 and the two outer rings 2016 are both raised, at this time, the two buffer springs 2015 are both deformed, when the penetrating rod 2010 moves to separate from the lifting plate one 203, the lifting plate one 203 slides upwards along the two L-shaped round rods 202 under the action of the elasticity of the two buffer springs 2015, drives the vertical plate 206 to rise, then drives the guide plate 205 to slide along the two guide round rods 204, and drives the support 7 and the engine front hood 3 to overturn, so that the rear end of the engine front hood 3 is popped up, the engine front hood 3 slightly sinks under the impact of the head of the pedestrian, the impact force of the impact is absorbed through the two buffer springs 2015, simultaneously, the foamed sponge buffer layer 4 moves and deforms together with the engine front hood 3, directly absorbs the impact energy, and finally avoids the head of the pedestrian to directly collide with the hard objects such as the engine and the gearbox to greatly reduce the injury degree.

[0033] In the embodiment 3, on the basis of the embodiment 1, the top of the two outer rings 2016 is fixedly connected with the buffer barrels 2017, the two buffer barrels 2017 are respectively located outside the two buffer springs 2015, and the two buffer barrels 2017 are located below the lifting plate one 203, the top of the two vertical columns 2012 is fixedly connected with the buffer rods 2014, the top of the two buffer rods 2014 is fixedly connected with the buffer balls 2013, and the two buffer balls 2013 are located below the foamed sponge buffer layer 4, and the buffer balls 2013 and the buffer barrels 2017 are made of rubber material.

[0034] Specifically, when the engine front hatch cover 3 is impacted by the head of the pedestrian and moves downward, the foamed sponge buffer layer 4 is driven to move to impact the two buffer balls 2013, so that the two buffer balls 2013 are deformed, and at the same time, the lifting plate one 203 is driven to slide along the two L-shaped round rods 202 to impact the two buffer barrels 2017, so that the two buffer barrels 2017 are deformed, so that the buffer balls 2013 and the buffer barrels 2017 absorb the impact energy by deformation, further reducing the risk of serious injury.

[0035] In the embodiment 4, on the basis of the embodiment 1, the middle part of the lifting plate one 203 is provided with a through hole 2018, the inner side of the through hole 2018 is fixedly connected with two inner annular groove bodies 2019, the penetrating rod 2010 penetrates through the two inner annular groove bodies 2019, and the inner side of the two inner annular groove bodies 2019 is provided with a plurality of ball bearings 2020 at equal angles, and each ball bearing 2020 abuts against the outer wall of the penetrating rod 2010.

[0036] Specifically, the two inner annular groove bodies 2019 are arranged in the through hole 2018, and a plurality of ball bearings 2020 abutting against the outer wall of the penetrating rod 2010 are arranged in the two inner annular groove bodies 2019, when the lifting plate two 2011 rises, the lifting plate one 203 is pressed against the penetrating rod 2010 by the elastic force of the two buffer springs 2015, and the ball bearings 2020 avoid the direct contact between the lifting plate one 203 and the penetrating rod 2010, so as to reduce the friction force suffered by the penetrating rod 2010 and the lifting plate one 203 during the disengagement process.

[0037] Finally, it should be noted that: the above only describes the preferred examples of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A pedestrian head oriented smart front hood pop-up protection device, characterized by: The utility model provides an engine front hatch protection mechanism, including the installation board (1), the top of installation board (1) is equipped with engine front hatch (3), is equipped with support (7) between engine front hatch (3) and installation board (1), and the bottom side fixed connection of engine front hatch (3) has roof (5), and roof (5) rotationally connected in the top of support (7), and the bottom fixed connection of support (7) has bottom plate (6) between installation board (1), and bottom plate (6) rotationally connected in the top of installation board (1), and the bottom of support (7) is equipped with pop -up protection mechanism (2); The utility model provides an engine front hatch protection mechanism, including the installation board (1), the top of installation board (1) is equipped with engine front hatch (3), is equipped with support (7) between engine front hatch (3) and installation board (1), and the bottom side fixed connection of engine front hatch (3) has roof (5), and roof (5) rotationally connected in the top of support (7), and the bottom fixed connection of support (7) has bottom plate (6) between installation board (1), and bottom plate (6) rotationally connected in the top of installation board (1), and the bottom of support (7) is equipped with pop -up protection mechanism (2); 2. A pedestrian head oriented smart front hood pop-up protection device according to claim 1, characterized in that: The bottom of the lifting plate one (203) is equipped with the lifting plate two (2011), the lifting plate two (2011) is movably sleeved on the outer side of the two L-shaped round rods (202), the top of the lifting plate two (2011) is fixedly connected with two stand columns (2012) symmetrically, both the two stand columns (2012) penetrate through the lifting plate one (203) and are movably connected with the lifting plate one (203), the outer side of both the two stand columns (2012) is fixedly sleeved with an outer ring (2016), both the top of the two outer rings (2016) and the bottom of the lifting plate one (203) are fixedly connected with a buffer spring (2015), and the two buffer springs (2015) are sleeved on the outer side of the two stand columns (2012) respectively.

3. A pedestrian head oriented smart front hood pop-up protection device according to claim 1, characterized in that: The bottom of the lifting plate one (203) is equipped with the lifting plate two (2011), the lifting plate two (2011) is movably sleeved on the outer side of the two L-shaped round rods (202), the top of the lifting plate two (2011) is fixedly connected with two stand columns (2012) symmetrically, both the two stand columns (2012) penetrate through the lifting plate one (203) and are movably connected with the lifting plate one (203), the outer side of both the two stand columns (2012) is fixedly sleeved with an outer ring (2016), both the top of the two outer rings (2016) and the bottom of the lifting plate one (203) are fixedly connected with a buffer spring (2015), and the two buffer springs (2015) are sleeved on the outer side of the two stand columns (2012) respectively.

4. A pedestrian head oriented smart front hood pop-up protection device according to claim 1, characterized in that: The outer side of the sliding plate (207) is fixedly connected with a penetrating rod (2010), and the penetrating rod (2010) penetrates through the lifting plate one (203).

5. A pedestrian head oriented smart front hood pop-up protection device according to claim 3, characterized in that: The top of both the two outer rings (2016) is fixedly connected with a buffer cylinder (2017), and the two buffer cylinders (2017) are located on the outer side of the two buffer springs (2015) respectively and below the lifting plate one (203).

6. A pedestrian head oriented smart front hood pop-up protection device according to claim 2, characterized in that: ​ 7. A pedestrian head oriented smart front hood pop-up protection device according to claim 2, characterized in that: The top end of each of the two posts (2012) is fixedly connected with a buffer rod (2014), the top end of each of the two buffer rods (2014) is fixedly connected with a buffer ball (2013), and the two buffer balls (2013) are located below the foamed sponge buffer layer (4).

8. A pedestrian head oriented smart front hood pop-up protection device according to claim 1, characterized in that: The middle part of the lifting plate one (203) is provided with a through hole (2018), the inner side of the through hole (2018) is fixedly connected with two inner annular groove bodies (2019) in a symmetrical manner, and the penetrating rod (2010) penetrates through the two inner annular groove bodies (2019).

9. A pedestrian head oriented smart front hood pop-up protection device according to claim 8, characterized in that: The inner side of each of the two inner annular groove bodies (2019) is provided with a plurality of ball bearings (2020) at equal angles, and each ball bearing (2020) abuts against the outer wall of the penetrating rod (2010).

10. A pedestrian head oriented smart front hood pop-up protection device according to claim 1, characterized in that: The bottom of the engine front hatch (3) is fixedly connected with a foamed sponge buffer layer (4).