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 replace a pawl with a relay collision plate so as to reduce the assembly difficulty of the device, and comprises a front cover connecting plate, an in-bin connecting plate, an unfolding and converging hinge rod and the relay collision plate, the front cover connecting plate 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 unfolding and converging hinge rod are hinged to the front cover connecting plate and the in-bin connecting plate correspondingly, a combination folded edge is formed on the first body plate part, the relay collision plate is hinged to the combination folded edge, a hinge shaft is perpendicular to the bouncing direction, the relay collision plate is provided with a collision body plate part and a turning stopping edge, the collision body plate part faces the first body plate part, and the turning stopping edge is perpendicular to the first body plate part. And the turning stopping edge extends towards the in-bin connecting plate and is in pin joint with the second main body plate part, so that the front cover connecting plate, the in-bin connecting plate and the unfolding and converging hinge rod are hinged and converged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile pedestrian protection hinge, concretely relates to a point explosion formula 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 between the front cover and the body near the front window of the car, and the hinge chain is lifted by the telescopic point exploder, so that the front cover is lifted when the pedestrian protection of the automobile 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 a 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 exploder corresponding to the front end combination piece corresponds to the unhooking part, the surface of the lock ring mounting plate piece is formed with a lap joint groove that is lapped and matched with the claw hook part, so that the front end drive hinge chain converges, the lap joint groove is located on the surface of the lock ring mounting plate piece away from the front cover of the car, 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 joint 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 to the lock ring mounting plate piece, and the pawl is separated from the unhooking part after the three-dimensional pawl is impacted, that is, the pawl is coupled to the front end combination piece, so that the front cover of the car is bounced up.

[0005] However, the above-mentioned implementation also has some disadvantages in reality, specifically, in order to ensure that the pawl can reliably separate from the unhooking part, and also will not accidentally unhook due to being too sensitive, the matching tolerance design of the pawl and the unhooking part needs to have high precision, and good assembly implementation is also needed during assembly of the device to ensure the above-mentioned matching precision, so that the assembly difficulty of the device is high. UTILITY MODEL CONTENTS

[0006] In view of the deficiencies of the prior art, the utility model provides a point explosion formula pedestrian protection device, which can replace the pawl with a relay impact plate, thereby reducing the assembly difficulty of the device.

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

[0008] The utility model provides a point explosion pedestrian protection device, and the point explosion device is arranged in the front compartment and acts towards the front hood, and the acting direction is the pop-up direction, and the utility model discloses the following: a front hood connecting plate is connected with the inner surface of the front hood, and the front hood connecting plate has a first main plate part; an inner compartment connecting plate is fixedly arranged in the front compartment, and the inner compartment connecting plate has a second main plate part; and a spread-out and convergent hinge rod is hingedly connected with the front hood connecting plate and the inner compartment connecting plate at both ends, wherein the point explosion pedestrian protection device further comprises a relay impact plate, the edge of the first main plate part is formed with a combined bending edge extending towards the inner compartment connecting plate, the relay impact plate is hingedly arranged on the combined bending edge, so that the relay impact plate is located between the front hood connecting plate and the inner compartment connecting plate, and the hinge shaft is perpendicular to the pop-up direction, the relay impact plate has an impact main plate part and a rotation-stopping bending edge, the impact main plate part is towards the first main plate part, the rotation-stopping bending edge is formed on the edge of the relay impact plate and extends towards the inner compartment connecting plate, and the rotation-stopping bending edge is pinned with the second main plate part, so that the front hood connecting plate, the inner compartment connecting plate and the spread-out and convergent hinge rod are hingedly converged, the inner compartment connecting plate has a point explosion device through hole, the acting end of the point explosion device passes through the point explosion device through hole along the pop-up direction, when the point explosion device acts, the acting end of the point explosion device passes through the point explosion device through hole, when the impact force is greater than a predetermined value by impacting the impact main plate part, the pinning of the rotation-stopping bending edge with the second main plate part is damaged, the acting end of the point explosion device continues to lift the relay impact plate, and when the relay impact plate interferes with the first main plate part, the front hood connecting plate, the inner compartment connecting plate and the spread-out and convergent hinge rod are hingedly spread out.

[0009] Preferably, the spread-out and convergent hinge rod is hingedly connected with the combined bending edge.

[0010] Preferably, the rotation-stopping bending edge is pinned with the side of the second main plate part through a shearing pin.

[0011] Preferably, the rotation-stopping bending edge is formed with a combined plate part through bending, and the plate surface of the combined plate part and the second main plate part are pinned through a stretching pin.

[0012] Further, the front hood connecting plate is further formed with a collision-accepting protrusion protruding towards the inner compartment connecting plate, the collision-accepting protrusion corresponds to the impact main plate part along the pop-up direction, and the minimum distance between the collision-accepting protrusion and the impact main plate part is greater than a predetermined distance.

[0013] Further, the edge of the second main plate part is formed with a first bending plate part through bending, the point explosion device through hole is formed in the first bending plate part, and the point explosion device through hole corresponds to the collision-accepting protrusion along the pop-up direction.

[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, spread and convergence hinge rod and relay collision plate, the front cover connecting plate is connected with the front cover of the vehicle, the front cover connecting plate has first main plate part; The warehouse connecting plate is fixedly arranged in the front warehouse of the vehicle, the warehouse connecting plate has second main plate part; The two ends of the spread and convergence hinge rod are hingedly connected with the front cover connecting plate and the warehouse connecting plate respectively, the first main plate part is formed with jointing flange, the relay collision plate is hingedly arranged on the jointing flange, and the hinge shaft is perpendicular to the direction of springing up, the relay collision plate has collision main plate part and rotation stopping flange, the collision main plate part is towards the first main plate part, the rotation stopping flange extends towards the warehouse connecting plate, the rotation stopping flange is pinned with the second main plate part, so that the front cover connecting plate, the warehouse connecting plate and the spread and convergence hinge rod are hingedly converged, the warehouse connecting plate has point explosion device through hole, the action end of the point explosion device passes through the point explosion device through hole along the direction of springing up, 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 is greater than the predetermined value by impacting the collision main plate part, the pinning of the rotation stopping flange and the second main plate part is damaged, the action end of the point explosion device continues to lift the relay collision plate, when the relay collision plate interferes with the first main plate part, the front cover connecting plate, the warehouse connecting plate and the spread and convergence hinge rod are hingedly spread, therefore, the utility model can replace the pawl with the relay collision plate, so that the assembly difficulty of the device is reduced without changing the stroke of the point explosion device and the overall installation space of the device.

[0016] 2. Because the front cover connecting plate of the utility model further forms the collision bearing projection protruding towards the warehouse connecting plate, the collision bearing projection corresponds with the collision main plate part along the direction of springing up, and the minimum distance between the collision bearing projection and the collision main plate part is greater than the predetermined distance, so that the distance between the front cover connecting plate and the warehouse connecting plate is the sum of the action stroke of the point explosion device, the thickness of the collision main plate part and the minimum distance between the collision bearing projection and the collision main plate part, therefore, the utility model can flexibly adapt to the point explosion device with different action strokes by designing the thickness of the collision main plate part and / or the minimum distance between the collision bearing projection and the collision main plate part. BRIEF DESCRIPTION OF DRAWINGS

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

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

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

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

[0021] Fig. 5 This is a schematic diagram of the detonation-type pedestrian protection device in Embodiment 2 of this utility model when deployed;

[0022] Fig. 6 This 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 folded edge; 12, impact-bearing protrusion; 12a, sloped surface; 20, internal connecting plate; 20A, second main body plate; 20a, first folded edge plate; 20b, second folded edge plate; 20c, supporting folded edge; 21, detonator through hole; 22, pin connecting plate; 30, expansion hinge rod; 40, relay impact plate; 40A, impact main body plate; 40a, anti-turning edge; P1, shear pin; 40b, connecting plate; P2, tension pin. 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, a retractable hinge rod 30, and a relay impact plate 40.

[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 protrusion 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 plate part 10A is formed with a joint flange 11 which is bent and extends towards the in-cabin connecting plate 20, and the joint flange 11 is hingedly connected with the spread hinge 30, specifically, the edges of the opposite sides of the first main plate part 10A are each formed with a joint flange 11, and the number of the spread hinge 30 is one pair, and one end of the one pair of spread hinges 30 is hingedly connected with the one pair of joint flanges 11.

[0031] The impact protrusion 12 is formed on the surface of the first main plate part 10A and protrudes towards the in-cabin connecting plate 20, and in this embodiment, the impact protrusion 12 has a slope surface 12a relative to the surface of the first main plate part 10A.

[0032] The in-cabin connecting plate 20 is fixedly arranged in the front cabin of the vehicle, and the in-cabin connecting plate 20 has a second main plate part 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 part 10 along the pop-up direction D.

[0033] The edge of the second main plate part 20A is formed with a first flange plate part 20a by bending, and the first flange plate part 20a is formed with the detonator through hole 21, the action end of the detonator E passes through the detonator through hole 21 along the pop-up direction D, and the detonator through hole 21 corresponds to the impact protrusion 12 along the pop-up direction D, specifically, the first flange plate part 20a is parallel to the first main plate part 10A.

[0034] The relay striker plate 40 is hingedly arranged on the joint flange 11, so that the relay striker plate 40 is located between the front cover connecting plate 10 and the in-cabin connecting plate 20, and the hinge shaft is perpendicular to the pop-up direction D, specifically, the opposite sides of the relay striker plate 40 are respectively hingedly connected with the one pair of joint flanges 11, so that the relay striker plate 40 is located between the one pair of joint flanges 11, and the relay striker plate 40, the joint flange 11 and the spread hinge 30 share the hinge shaft pin.

[0035] The relay striker plate 40 has a striker main plate part 40A and a rotation stopping flange 40a.

[0036] The striker main plate part 40A is towards the first main plate part 10A, the rotation stopping flange 40a is formed on the edge of the relay striker plate 40 and extends towards the in-cabin connecting plate 20, the rotation stopping flange 40a is pinned with the side of the second main plate part 20A by a shearing pin P1, so that the front cover connecting plate 10, the in-cabin connecting plate 20 and the spread hinge 30 are hingedly converged, and the striker main plate part 40A corresponds to the impact protrusion 12 along the pop-up direction D, and the minimum distance between the impact protrusion 12 and the striker main plate part 40A is greater than a predetermined distance.

[0037] Specifically, the first body plate part 10A, the second body plate part 20A and the impact body plate part 40A are parallel, the number of the stop folding edges 40a is one pair, the second body plate part 20A is further formed with a pair of relative and parallel pin joint plate parts 22 by folding edges, and the two stop folding edges 40a are pin jointed with the two pin joint plate parts 22 respectively by the pair of shearing pins P1.

[0038] In the present embodiment, the free end of the first folding edge plate part 20a is formed with a second folding edge plate part 20b by bending, the second folding edge plate part 20b is formed with a two-section plate segment structure which is parallel and extends along the ejection direction D at the end of its own extension direction by cutting, and the free ends of the two plate segments are further formed with folding edges which are parallel to the plate body of the front cover connecting plate 10 by folding, and the folding edges are taken as bearing folding edges 20c, when the front cover connecting plate 10, the expansion and contraction hinge 30 and the in-warehouse connecting plate 20 are hinged and contracted, the two bearing folding edges 20c are in contact with the front cover connecting plate 10.

[0039] When the point detonator E acts, the action end of the point detonator E penetrates the point detonator through-hole 21, and when the impact force on the impact body plate part 40A is greater than a predetermined value by impact, at this time, the impact force generates a shearing force on the shearing pins P1 at the side of the stop folding edges 40a and the second body plate part 20A, which is greater than the limit of the shearing force that the shearing pins P1 can bear, resulting in the destruction of the pin joint of the stop folding edges 40a and the second body plate part 20A, then the action end of the point detonator E continues to lift the relay impact plate 40, and when the relay impact plate 40 interferes with the impact bearing protrusion 12, the continuous lifting of the point detonator E causes the front cover connecting plate 10, the in-warehouse connecting plate 20 and the expansion and contraction hinge 30 to be hinged and expanded.

[0040] <Embodiment Two>

[0041] In the present embodiment two, the same symbols are given to the same structures as in the first embodiment, and the same description is omitted, and the difference from the first embodiment is that:

[0042] As shown in Figs. 4 to 6 , the free end of the binding folding edge 11 is formed with a binding plate part 40b by bending, and the plate surface of the binding plate part 40b and the second body plate part 20A are pin jointed by the stretching pins P2, that is, the present embodiment has the binding plate part 40b, and the shearing pins P1 are replaced by the stretching pins P2 and the pin joint plate parts 22 are omitted.

[0043] When the detonator E is actuated, the actuation end of the detonator E penetrates the detonator via-hole 21, and when the impact force is greater than a predetermined value, the impact force is greater than the limit of the tensile force that the tensile pin P2 can withstand, which causes the pin joint between the bonding plate portion 40a and the second main plate portion 20A to be destroyed, and then the actuation end of the detonator E continues to lift the relay impact plate 40 until the relay impact plate 40 interferes with the impact receiving protrusion 12, and the continued lifting of the detonator E causes the front cover connecting plate 10, the in-warehouse connecting plate 20, and the expansion and convergence hinge rod 30 to be hingedly expanded.

[0044] The above-mentioned embodiments are preferred cases of the present application, and are not intended to limit the protection scope of the present application. Various modifications and changes made by those skilled in the art within the scope of the appended claims without creative labor are still within 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 point explosion type pedestrian protection device comprises: a front cover connecting plate connected with the inner surface of the front cover of the vehicle, the front cover connecting plate having a first main plate portion; an in-warehouse connecting plate fixedly arranged in the front warehouse of the vehicle, the in-warehouse connecting plate having a second main plate portion; and a spread and convergence hinge rod having two ends respectively hingedly connected with the front cover connecting plate and the in-warehouse connecting plate, wherein the point explosion type pedestrian protection device further comprises a relay impact plate, an edge of the first main plate portion is formed with a combined bending edge extending towards the in-warehouse connecting plate, the relay impact plate being hingedly arranged on the combined bending edge, so that the relay impact plate is located between the front cover connecting plate and the in-warehouse connecting plate, and the hinging shaft is perpendicular to the pop-up direction, the relay impact plate having an impact main plate portion and a rotation-stopping bending edge, the impact main plate portion being towards the first main plate portion, the rotation-stopping bending edge being formed at an edge of the relay impact plate and extending towards the in-warehouse connecting plate, the rotation-stopping bending edge being pinned with the second main plate portion, so that the front cover connecting plate, the in-warehouse connecting plate and the spread and convergence hinge rod are hingedly converged, the in-warehouse connecting plate having a point exploder through hole, an action end of the point exploder passing through the point exploder through hole along the pop-up direction, when the point exploder is actuated, the action end of the point exploder passing through the point exploder through hole, when the impact force caused by the impact of the impact main plate portion is greater than a predetermined value, the pinning between the rotation-stopping bending edge and the second main plate portion is broken, the action end of the point exploder continues to lift the relay impact plate, until the relay impact plate interferes with the first main plate portion, the front cover connecting plate, the in-warehouse connecting plate and the spread and convergence hinge rod are hingedly spread.

2. The point explosion type pedestrian protection device according to claim 1, wherein: the spread 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 rotation-stopping bending edge is pinned with the side portion of the second main plate portion by a shearing pin. wherein 4. The point explosion type pedestrian protection device according to claim 1, wherein: the rotation-stopping bending edge is formed with a combined plate portion by bending, the combined plate portion being pinned with the plate surface of the second main plate portion by 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 a collision-accepting protrusion protruding towards the in-warehouse connecting plate, the collision-accepting protrusion corresponding to the impact main plate portion along the pop-up direction, and the minimum distance between the collision-accepting protrusion and the impact main plate portion is greater than a predetermined distance. wherein 6. The point explosion type pedestrian protection device according to claim 5, wherein: an edge of the second main plate portion is formed with a first bending plate portion by bending, the point exploder through hole being formed in the first bending plate portion, and the point exploder through hole corresponding to the collision-accepting protrusion along the pop-up direction. wherein ​

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