Explosion type pedestrian protection device

Abstract

The utility model belongs to the field of automobile pedestrian protection hinges, and discloses an explosion type pedestrian protection device which can be effectively implemented under the conditions that a reserved space enough for implementing the explosion type pedestrian protection device is not suitable for being reserved in an automobile, and a pawl or an additional part equal to the pawl is not suitable for being arranged in the automobile. Comprising a front cover connecting plate, an in-bin connecting plate and an in-bin connecting plate, and the front cover connecting plate is connected with a vehicle front cover and is provided with a first main body plate part; the in-cabin connecting plate is fixedly arranged in the vehicle front cabin and is provided with a second main body plate part; the two ends of the expanding and converging hinge rod are hinged to the front cover connecting plate and the in-bin connecting plate respectively, a combined folded edge is formed on the first main body plate part and is in pin joint with the second main body plate part, and therefore the front cover connecting plate, the in-bin connecting plate and the expanding and converging hinge rod are hinged and converged, and the in-bin connecting plate is provided with an exploder via hole. The action end of the exploder penetrates through the exploder via hole in the bouncing direction.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile pedestrian protection hinge, concretely relates to a point explosion type pedestrian protection device. BACKGROUND

[0002] The automobile front cover pedestrian protection system on the market is to set the hinge chain between the fixed sheet metal part in the front cover and the vehicle body near the front window of the vehicle, and the hinge chain is lifted by the telescopic point explosion device, so that the front cover of the vehicle is lifted when the pedestrian protection is touched.

[0003] The utility model discloses a front and rear end double point explosion pedestrian protection device of car front cover, and the front end combination piece includes a three-dimensional pawl, the three-dimensional pawl has an unhooking part, one end of the three-dimensional pawl is rotationally arranged on the front end combination piece through a return spring, the unhooking part is a free end formed in the radial direction of rotation, the telescopic point explosion device corresponding to the front end combination piece corresponds to the unhooking part, the surface of the lock ring mounting plate part is formed with a lap groove that is lapped and matched with the claw hook part, so that the front end drive hinge chain converges, the lap groove is located on the surface of the lock ring mounting plate part away from the front cover of the vehicle, the unhooking part is impacted, so that the three-dimensional pawl rotates relative to the front end combination piece, so that the claw hook part is separated from the lap groove.

[0004] It can be seen that the above-mentioned three-dimensional pawl is used to make the coupling of the pawl and the unhooking part more stable when the front end combination piece converges on the lock ring mounting plate part, and after the three-dimensional pawl is impacted, the pawl is separated from the unhooking part, that is, the pawl is coupled to the front end combination piece, so that the front cover of the vehicle is lifted.

[0005] However, the above-mentioned implementation also has some disadvantages in reality. Due to the diversification of vehicle models on the market, the space reserved for installing the pedestrian protection device is different for different vehicle models, and the impulse range of the point explosion device set according to the design expectation is limited. In some scenarios, there is not enough space reserved in the vehicle for the above-mentioned implementation, and it is not suitable to set the pawl or the additional component equivalent to the pawl, so it is necessary to improve the design of the pedestrian protection device to meet the application scenarios of small reserved space and small impulse point explosion device. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides a point explosion type pedestrian protection device, which can effectively implement the pedestrian protection device in scenarios where there is not enough space reserved in the vehicle for the above-mentioned implementation, and it is not suitable to set the pawl or the additional component equivalent to the pawl.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0008] The utility model provides a point explosion formula pedestrian protection device, lifts the front cover through the action of point exploder, and the point exploder sets up in the front storehouse and moves towards the front cover, and the action direction is as the direction of bouncing up, it is characterized in being: the front cover connecting plate is connected with the inner surface of the front cover of the car, and the front cover connecting plate has first main plate part;The in-storehouse connecting plate is fixed in the front storehouse, and the in-storehouse connecting plate has second main plate part;And the spread convergent hinge lever is hingedly connected with the front cover connecting plate and the in-storehouse connecting plate respectively, wherein the edge of first main plate part forms the joint flange that extends in the direction of bending towards the in-storehouse connecting plate, and the joint flange is connected with the second main plate part with the pin, so that the front cover connecting plate, the in-storehouse connecting plate and the spread convergent hinge lever are hingedly converged, and the in-storehouse connecting plate has the through hole of point exploder, and the action end of point exploder passes through the through hole of point exploder in the direction of bouncing up, when point exploder acts, the action end of point exploder passes through the through hole of point exploder, when the impact force is greater than the predetermined value by the impact of first main plate part, the pin connection of joint flange and second main plate part is destroyed, and the front cover connecting plate is continued to be lifted by the action end of point exploder, so that the front cover connecting plate, the in-storehouse connecting plate and the spread convergent hinge lever are hingedly spread.

[0009] Preferably, the spread convergent hinge lever is hingedly connected with the joint flange.

[0010] Preferably, the side of the joint flange and the second main plate part are connected by a shear pin.

[0011] Preferably, the joint flange forms a joint plate part by bending, and the joint plate part and the plate surface of the second main plate part are connected by a stretch pin.

[0012] Further, the front cover connecting plate further forms a collision receiving recess, and the opening of the collision receiving recess faces the in-storehouse connecting plate.

[0013] Further, the edge of the second main plate part forms a first flange plate part by bending, the through hole of point exploder is formed in the first flange plate part, and the through hole of point exploder corresponds to the collision receiving recess in the direction of bouncing up.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. Because the point explosion type pedestrian protection device of the utility model includes front cover connecting plate, warehouse connecting plate and warehouse connecting plate, front cover connecting plate is connected with the front cover of the car, front cover connecting plate has first main plate part; Warehouse connecting plate is fixed in the front warehouse of the car, warehouse connecting plate has second main plate part; The both ends of the expansion hinge rod are hinged with front cover connecting plate and warehouse connecting plate respectively, the first main plate part is formed with the joint flange, the joint flange is connected with the second main plate part with pin, so that front cover connecting plate, warehouse connecting plate and expansion hinge rod are hinged and converged, warehouse connecting plate has point explosion device via hole, the action end of point explosion device passes through point explosion device via hole along the direction of bouncing, when point explosion device acts, the action end of point explosion device hits the first main plate part to the impact force greater than the predetermined value, the pin connection of joint flange and second main plate part is damaged, front cover connecting plate is continued to be lifted by the action end of point explosion device, so that front cover connecting plate, warehouse connecting plate and expansion hinge rod are hinged and unfolded, therefore, the structure of the utility model omits the pawl or equivalent component, so that the effective implementation of pedestrian protection device can be carried out in the scene where the reserved space in the car is not suitable for reserving enough for the above-mentioned implementation, and the pawl or additional component equivalent to the pawl is not suitable for setting.

[0016] 2. Because the front cover connecting plate of the utility model further forms a collision concave, the opening of the collision concave faces the warehouse connecting plate, the collision concave is used for limiting the impact position of the point explosion device on the front cover connecting plate, and the impact position is limited inside the collision concave, therefore, the utility model limits the impact position of the point explosion device on the front cover connecting plate within a predetermined range, so as to avoid that the action end of the point explosion device slips too much relative to the fixed end at the moment of impact, and the impact force received by the front cover of the car is insufficient, resulting in the failure of the front cover of the car to bounce. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the schematic diagram when the point explosion type pedestrian protection device of the embodiment one of the utility model converges;

[0018] Fig. 2 It is the schematic diagram when the point explosion type pedestrian protection device of the embodiment one of the utility model unfolds;

[0019] Fig. 3 It is the explosion diagram of the point explosion type pedestrian protection device of the embodiment one of the utility model;

[0020] Fig. 4 It is the schematic diagram when the point explosion type pedestrian protection device of the embodiment two of the utility model converges;

[0021] Fig. 5 It is the schematic diagram when the point explosion type pedestrian protection device of the embodiment two of the utility model unfolds;

[0022] Fig. 6This is an exploded view of the detonation-type pedestrian protection device according to Embodiment 2 of this utility model.

[0023] In the diagram: 100, detonation-type pedestrian protection device; E, detonator; D, launch direction; 10, front cover connecting plate; 10A, first main body plate; 11, connecting fold; P1, shear pin; 111, connecting plate; P2, tension pin; 12, impact-bearing recess; 20, internal connecting plate; 20A, second main body plate; 20a, first fold plate; 20b, second fold plate; 20c, supporting fold; 21, detonator through hole; 22, pin connecting plate; 30, expansion hinge rod. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the following embodiments, in conjunction with the accompanying drawings, provide a detailed description of the detonation-type pedestrian protection device of this utility model. It should be noted that the description of these embodiments is intended to help understand this utility model, but does not constitute a limitation on this utility model.

[0025] <Example 1>

[0026] like Figs. 1 to 3 As shown, in this embodiment, the detonation-type pedestrian protection device 100 lifts the front cover of the vehicle (not shown in the attached figure) by the action of the detonator E. The detonator E is located in the front compartment of the vehicle (not shown in the attached figure) and moves toward the front cover, with the direction of action being the lifting direction D.

[0027] The detonation-type pedestrian protection device 100 includes a front cover connecting plate 10, an inner compartment connecting plate 20, and a retractable hinge rod 30.

[0028] The front cover connecting plate 10 is connected to the inner surface of the vehicle front cover. The front cover connecting plate 10 has a first main body plate portion 10A and a collision-bearing recess 12. Specifically, the front cover connecting plate 10 is a sheet metal part.

[0029] The two ends of the retractable hinge rod 30 are respectively hinged to the front cover connecting plate 10 and the inner compartment connecting plate 20. Specifically, the front cover connecting plate 10, the retractable hinge rod 30 and the inner compartment connecting plate 20 are hinged sequentially through their ends. When both hinge points of the front cover connecting plate 10, the retractable hinge rod 30 and the inner compartment connecting plate 20 are hinged open, the front cover connecting plate 10, the retractable hinge rod 30 and the inner compartment connecting plate 20 open in a "Z" shape.

[0030] The edge of the first main body plate 10A has a connecting flange 11 that bends and extends toward the inner connecting plate 20. The connecting flange 11 is hinged to the expansion hinge 30. Specifically, the edges of the opposite sides of the first main body plate 10A are formed with connecting flanges 11. There is a pair of expansion hinges 30, and one end of the pair of expansion hinges 30 is hinged to the pair of connecting flanges 11.

[0031] A collision recess 12 is formed in the first body plate portion 10A, the opening of the collision recess 12 faces the in-cabin connecting plate 20, and the collision recess 12 is used to limit the impact position of the detonator E on the front cover connecting plate 10, when the detonator E impacts the front cover connecting plate 11, the action end of the detonator E cannot escape from the collision recess 12 due to the obstruction of the side wall of the collision recess 12, that is, the impact position is limited inside the collision recess 12, specifically, the collision recess 12 is recessed along the ejection direction D.

[0032] The in-cabin connecting plate 20 is fixedly arranged in the front cabin of the vehicle, the in-cabin connecting plate 20 has a second body plate portion 20A and a detonator through hole 21, specifically, the in-cabin connecting plate 20 is a sheet metal part, and corresponds to the front cover connecting plate 10 along the ejection direction D.

[0033] The combination of the folded edge 11 and the side of the second body plate portion 20A is pinned by a shear pin P1, so that the front cover connecting plate 10, the in-cabin connecting plate 20 and the spread and collapse hinge 30 are hinged and collapsed, specifically, the second body plate portion 20A is parallel to the first body plate portion 10A, and the second body plate portion 20A further forms a pair of pin plate portions 22 which are opposite and parallel through folding, and the two combination folded edges 11 are respectively pinned to the two pin plate portions 22 through a pair of shear pins P1.

[0034] The edge of the second body plate portion 20A is formed into a first folded edge plate portion 20a through bending, the first folded edge plate portion 20a forms the detonator through hole 21, the action end of the detonator E passes through the detonator through hole 21 along the ejection direction D, and the detonator through hole 21 corresponds to the collision recess 12 along the ejection direction D, specifically, the first folded edge plate portion 20a is parallel to the first body plate portion 10A, in this embodiment, the free end of the first folded edge plate portion 20a is formed into a second folded edge plate portion 20b through bending, the end of the second folded edge plate portion 20b in its extension direction is formed into a two-segment plate segment structure which is parallel and extends along the ejection direction D through cutting, and the free ends of the two plate segments are further formed into folded edges which are parallel to the plate body of the front cover connecting plate 10 through folding, the folded edges are taken as support folded edges 20c, and when the front cover connecting plate 10, the spread and collapse hinge 30 and the in-cabin connecting plate 20 are hinged and collapsed, the two support folded edges 20c are in contact with the front cover connecting plate 10.

[0035] When the detonator E acts, the action end of the detonator E passes through the detonator through hole 21, and when the impact force is greater than a predetermined value by impacting the first body plate portion 10A, at this time, the shear force generated by the impact on the shear pin P1 between the combination folded edge 11 and the side of the second body plate portion 20A is greater than the limit of the shear force that the shear pin P1 can bear, which causes the pinning between the combination folded edge 11 and the second body plate portion 20A to be damaged, then the front cover connecting plate 10 is continuously lifted up by the action end of the detonator E, so that the front cover connecting plate 10, the in-cabin connecting plate 20 and the spread and collapse hinge 30 are hinged and spread.

[0036] <Embodiment Two>

[0037] In this embodiment two, for the same structure as embodiment one gives the same symbol, and omit the same description, relative to embodiment one, the difference is that:

[0038] As Figs. 4 to 6 shown, the free end of the binding flange 11 is formed by bending the binding plate 111, the plate surface of the second main plate 20A is connected by the stretch pin P2, that is, this embodiment adds the binding plate 111, and replaces the shear pin P1 with the stretch pin P2, and omits the pinning plate 22.

[0039] When the detonator E acts, the action end of the detonator E passes through the detonator hole 21, and when the impact force is greater than the predetermined value by impacting the first main plate 10A, at this time, the impact force is greater than the limit of the stretch force that the stretch pin P2 can bear, which causes the pinning of the binding plate 111 and the second main plate 20A to be damaged, and then the front cover connecting plate 10 is continued to be lifted by the action end of the detonator E, so that the front cover connecting plate 10, the in-store connecting plate 20 and the spread convergent hinge 30 are hinged and unfolded.

[0040] The above-mentioned embodiments are preferred cases of the present application, and do not limit the protection scope of the present application. Various modifications or changes made by those skilled in the art within the scope of the appended claims without creative labor still belong to the protection scope of the present application.

Claims

1. A point detonation type pedestrian protection device, which lifts up a hood by a point detonator action, the point detonator being provided in a front compartment of a vehicle and acting toward the hood, the acting direction being set as a pop-up direction, characterized in that, The application relates to a point explosion type pedestrian protection device, which comprises: a front cover connecting plate connected with the inner surface of a front cover of a vehicle, the front cover connecting plate having a first main plate part; an inner compartment connecting plate fixed in an inner compartment of the vehicle, the inner compartment connecting plate having a second main plate part; and an expansion and convergence hinge rod, the two ends of which are respectively hingedly connected with the front cover connecting plate and the inner compartment connecting plate, wherein the edge of the first main plate part is formed with a combined bending edge which is bent and extended towards the inner compartment connecting plate, the combined bending edge is pin-connected with the second main plate part, so that the front cover connecting plate, the inner compartment connecting plate and the expansion and convergence hinge rod are hingedly converged, the inner compartment connecting plate has a point explosion device through hole, the action end of the point explosion device passes through the point explosion device through hole in the pop-up direction, when the point explosion device acts, the action end of the point explosion device passes through the point explosion device through hole, when the impact force of the first main plate part is greater than a predetermined value, the pin connection between the combined bending edge and the second main plate part is damaged, the front cover connecting plate is continuously lifted by the action end of the point explosion device, so that the front cover connecting plate, the inner compartment connecting plate and the expansion and convergence hinge rod are hingedly expanded.

2. The point explosion type pedestrian protection device according to claim 1, wherein: the expansion and convergence hinge rod is hingedly connected with the combined bending edge. wherein 3. The point explosion type pedestrian protection device according to claim 1, wherein: the combined bending edge is pin-connected with the side part of the second main plate part through a shear pin. wherein, 4. The point explosion type pedestrian protection device according to claim 1, wherein: the combined bending edge is formed with a combined plate part through bending, the combined plate part is pin-connected with the plate surface of the second main plate part through a stretching pin. wherein 5. The point explosion type pedestrian protection device according to any one of claims 1-4, wherein: the front cover connecting plate is further formed with an impact receiving recess, the opening of the impact receiving recess is towards the inner compartment connecting plate, the impact receiving recess is used for limiting the impact position of the point explosion device on the front cover connecting plate, and the impact position is limited in the interior of the impact receiving recess. wherein 6. The point explosion type pedestrian protection device according to claim 5, wherein: the edge of the second main plate part is formed with a first bending edge plate part through bending, the point explosion device through hole is formed in the first bending edge plate part, and the point explosion device through hole corresponds to the impact receiving recess in the pop-up direction. wherein, ​

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