CN202641602U - Bouncing device for car engine hood based on protection against pedestrian head injuries - Google Patents
Bouncing device for car engine hood based on protection against pedestrian head injuries Download PDFInfo
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- CN202641602U CN202641602U CN 201220291025 CN201220291025U CN202641602U CN 202641602 U CN202641602 U CN 202641602U CN 201220291025 CN201220291025 CN 201220291025 CN 201220291025 U CN201220291025 U CN 201220291025U CN 202641602 U CN202641602 U CN 202641602U
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- car
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- pedestrian
- linkage
- engine cover
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Abstract
The utility model relates to a bouncing device for lifting car engine hoods, particularly relates to a bouncing device for a car engine hood based on protection against pedestrian head injuries, and aims to bounce car engine hoods automatically when cars run into pedestrians, increase energy absorption space and provide protection for pedestrian heads against injuries. The device comprises a driver, a lifting mechanism and a supporting mechanism. The driver is a servo motor and connected with a car body through a motor supporting frame; the lifting mechanism is composed of a screw rod and a nut and used for lifting the engine hood when a car runs into a pedestrian; and the supporting mechanism is a hinge unit and connects and rotates the engine hood. After the whole bouncing device receives collision signals of a car and a pedestrian, the nut of the lifting mechanism is driven by the driver to rotate in high speed, so that the screw rod moves upwards relative to the nut, and a hinge is driven to rotate to support the engine hood to open upwards to provide protection for pedestrians.
Description
Technical field
The utility model relates to the pedestrian protecting field of automotive crash safety, is specially a kind of motorcar engine cover bounce device based on the pedestrian head injury protection.
Background technology
In general, when the car in travelling and pedestrian bumped, because effect of inertia, the pedestrian can rotate toward the vehicle body direction above the waist, causes pedestrian head and car bonnet to bump against.Owing to having many hard spots (such as damping tower, driving engine, front windshield lower frame etc.) below the car bonnet, after bumping against, pedestrian head and hard spot produce huge acceleration/accel, easily cause head injury.
In the prior art, some are also arranged with the car bonnet of safety measure, predetermined altitude can be opened and rise in this car bonnet rear end automatically when vehicle and pedestrian bump, and under normal travel situations, car bonnet then is in closed condition.The lifting of car bonnet rear end increases its downward deformation range, when pedestrian head and car bonnet rear end collision, the space that promotes can prevent the hard spot collision below head and the car bonnet effectively, collision energy can be effectively absorbed, thereby can reduce to a great extent the damage of pedestrian head.But the bounce device of this car bonnet mainly is divided into gunpowder formula and mechanical type.Gunpowder formula bounce device can not reuse, and cost is high.And there is the problem that can not control the acceleration of upspringing in traditional mechanical type bounce device.
The utility model content
The technical matters that the utility model solves is to provide a kind of motorcar engine cover bounce device based on the pedestrian head injury protection, this bounce device is the mechanical type bounce device, simple in structure, easy for installation, can when car and pedestrian impact, promote the rear end of car bonnet, simultaneously, increase the energy-absorbing space of car bonnet, to reduce car to the damage of pedestrian head.
The technical matters that the utility model solves realizes by the following technical solutions:
Based on the motorcar engine cover bounce device of pedestrian head injury protection, can control the acceleration/accel that hood of vehicle is upspring and moved, make car bonnet rear end quick flat when traffic collides rise to quietly predetermined altitude.Comprise actuator, lift system and linkage, wherein, actuator is one can make the forward and reverse servomotor that rotatablely moves, be connected with car body by motor support base, be used to the lifting car bonnet that power is provided, its top is by lift system connecting hinge chain mechanism, and linkage is arranged between car body and the car bonnet, is used for realizing that car body connects with the rotation of car bonnet.
As further technique complementary of the present utility model, described lift system is a leading screw and nut mechanism, and its top captive joint car bonnet can be used for car bonnet is promoted; Nut on the lift system is the inner groovy structure of two-way opening, and the bottom links by spline and actuator, and top is by the negative thread connection wire rod, and with it coupling.
As further technique complementary of the present utility model, this linkage comprises: mechanical arm unit and two adapter plates.The mechanical arm unit is a connecting rod mechanism, comprises two swivel arms, links to each other with car bonnet with the roof rail of car body by two adapter plates respectively, between two swivel arms and two adapter plates and all be that rotation connects between two swivel arms.Like this, by relatively rotating between each element of linkage, can realize that linkage opens supporting engines cover rear end rotationally.
In the utility model, two swivel arms of mechanical arm unit all have electromechanical stop, when turning to predetermined angular under the effect of swivel arm at lift system of arm unit, the mechanical shutter of swivel arm self retrains two arms, it is stopped operating, the overexercise that is used for constraint two arms is to limit the hoisting depth of car bonnet.
Under this structure function, actuator can outputting power during normal vehicle operation.Therefore, the screw mandrel of lift system can play the effect of constraint to linkage, can stop hinge to rotate with respect to car body, makes car bonnet keep stable in the normal vehicle operation process;
Splined is passed through in nut in the lift system and servomotor rotating shaft, and rotates under the drive of turning cylinder; The lower end of screw mandrel and nut coupling, the upper end links to each other with one of them swivel arm of linkage.When nut was done positive and negative rotation, screw mandrel can be done rise/fall motion under the drive of nut, by linkage the opening and reset of supporting engines cover rotationally;
The actuator Main Function is the nut High Rotation Speed that drives lift system, thereby the screw mandrel of lift system is risen and descending motion.In addition.Output power of motor is stable, can control well the problem that bounce device is upspring and accelerated.
Advantage of the present utility model and beneficial effect thereof are:
1. this bounce device is simple in structure, and is easy for installation, and can reuse.
2. under normal travel situations, hinge had effect of contraction by lift system, therefore, the connecting-rod locking mechanism that car bonnet and linkage need not additionally be installed with this bounce device upspring type car bonnet suppresses the vibration of car bonnet under the normal travel situations, can reduce like this total quality of hood assembly, save cost.
3. servomotor stabilization of speed can make the car bonnet pulsation-free promote and resets by lift system and linkage, and the upspring acceleration/accel of motion of control engine cover well.
Description of drawings
The overview of Fig. 1 motorcar engine cover bounce device.
The part sectional view that Fig. 2 motor connects with leading screw and nut mechanism.
Under Fig. 3 linkage closed condition with the lateral plan of motorcar engine cover.
Under Fig. 4 linkage open mode with the lateral plan of motorcar engine cover.
The specific embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
, to Fig. 4 the motorcar engine cover bounce device of the utility model embodiment is described below with reference to accompanying drawing 1.
Fig. 1 is the overview of the utility model car bonnet bounce device.
Whole device comprises three main portions such as motor 2, leading screw and nut mechanism 3 and linkage 4, is fixed on the car body by motor support base 1.Motor 2 is by the central process unit control of vehicle, when motor 2 is received the signal of vehicle that central process unit sends and pedestrian impact or collision settling signal, motor 2 open belt movable wire stem nut mechanisms 3 move up or down, cause linkage 4 to open or close rotationally hood of vehicle.
Fig. 2 is the part sectional view that motor 2 connects with leading screw and nut mechanism 3.
Fig. 3 represents under the present embodiment linkage 4 closed conditions the lateral plan with the motorcar engine cover.
This linkage 4 comprises the first swivel arm 11 and the second swivel arm 12, they have formed an arm unit connecting rod mechanism that supports rotationally motorcar engine cover 13 jointly, car bonnet 13 can be rotated with respect to car body, two swivel arms are respectively with self the first swivel arm block 17 and the second swivel arm block 18, when the first swivel arm 11 and the second swivel arm 12 relatively rotated critical angle, electromechanical stop can retrain its further rotation.
Motorcar engine cover 13 connects with the first swivel arm 11 of linkage 4 by car bonnet stay bearing plate 1 and car bonnet stay bearing plate 2 15; The second swivel arm 12 of linkage 4 connects with the roof rail of car front window by linkage adapter plate 16.Connect by top rotating hinge 19, middle rotating hinge 20 and bottom rotating hinge 21 respectively between the first swivel arm 11 and car bonnet stay bearing plate 14, the first swivel arm 11 and the second swivel arm 14 and the second swivel arm 12 and the linkage adapter plate 16, as shown in Figure 3.
Fig. 4 be under the present embodiment linkage 4 open modes with the lateral plan of motorcar engine cover.
When motor 2 drives the rotation of nut 7 high-speed forward, to motion, support the first swivel arm 11 and upwards rotate around rotating hinge 20 on the screw mandrel 8, make motorcar engine cover 13 rotating opening under the effect of stay bearing plate 14 and 15.Simultaneously, under the pulling function that the first swivel arm 11 rotates, the second swivel arm 12 also will upwards rotate around rotating hinge 21, and motorcar engine cover 13 is further opened.When the first swivel arm 11 and the second swivel arm 12 relatively rotated state shown in Figure 4, the first swivel arm block 17 and the second swivel arm block 18 were by the further motion of adapter plate 16 constraint swivel arms.
The bounce device mode of operation of above-mentioned motorcar engine cover 13 is as follows:
When servomotor 2 can outputting power when not receiving the driving signal of Car Central treater, the relative position that nut 7 and screw mandrel 8 show such as Fig. 2 institute, motorcar engine cover 13 is in closed condition.Because the effect of contraction of the first swivel arm 11 of 7 pairs of linkages 4 of screw mandrel, the relative car body in motorcar engine cover 13 rear ends is fixed.Yet, when servomotor 2 is received the signal of car that the Car Central treater sends and pedestrian impact, machine shaft 5 can drive nut 7 and do the high-speed forward motion, screw mandrel 8 relative nuts 7 up move, the first swivel arm 11 that drives linkage 4 upwards rotates relative to the second swivel arm 12, opens to support motorcar engine cover 13.When screw mandrel 8 reaches maximum vertical penetration, the first swivel arm 11 and second swivel arm 12 of linkage 4 also turn to greatest extent position simultaneously, and the first swivel arm block 17 and the second swivel arm block 18 constrain in predetermined position of rising height with screw mandrel with motorcar engine cover 13.
When servomotor 2 is received the collision settling signal that the Car Central treater sends, servomotor 2 will drive nut 7 and do rotation on the opposite sense, so that screw mandrel 8 relative nuts 7 down move, thereby cause the first swivel arm 6 of hinge means 4 and the second swivel arm 7 to rotate, drive motorcar engine cover 13 and reset.
Above demonstration and described groundwork of the present utility model and principal character and advantage of the present utility model.The technical personnel of the industry should be understood; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification sheets just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. based on the motorcar engine cover bounce device of pedestrian head injury protection, comprise actuator, lift system and linkage, it is characterized in that, actuator is one can make the forward and reverse servomotor that rotatablely moves, be connected with car body by motor support base, its top is by lift system connecting hinge chain mechanism, and linkage is arranged between car body and the car bonnet; Described lift system is a leading screw and nut mechanism, and its top captive joint car bonnet has the inner groovy nut of a two-way opening on it, and the nut bottom links by spline and actuator, and top is by negative thread connection wire rod and with it coupling; Described linkage comprises mechanical arm unit and two adapter plates, and the mechanical arm unit is a connecting rod mechanism, comprises two swivel arms, links to each other with car bonnet with the roof rail of car body by two adapter plates respectively.
2. the motorcar engine cover bounce device based on the pedestrian head injury protection according to claim 1 is characterized in that, all adopts to rotate between described two swivel arms and two adapter plates and between two swivel arms to connect.
3. the motorcar engine cover bounce device based on the pedestrian head injury protection according to claim 1 is characterized in that, is provided with electromechanical stop on two swivel arms of described mechanical arm unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220291025 CN202641602U (en) | 2012-06-20 | 2012-06-20 | Bouncing device for car engine hood based on protection against pedestrian head injuries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220291025 CN202641602U (en) | 2012-06-20 | 2012-06-20 | Bouncing device for car engine hood based on protection against pedestrian head injuries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202641602U true CN202641602U (en) | 2013-01-02 |
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ID=47410754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220291025 Expired - Fee Related CN202641602U (en) | 2012-06-20 | 2012-06-20 | Bouncing device for car engine hood based on protection against pedestrian head injuries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202641602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700497A (en) * | 2012-06-20 | 2012-10-03 | 湖南大学 | Car engine hood bounce device based on pedestrian head injury protection |
| CN105442965A (en) * | 2014-09-23 | 2016-03-30 | 福特全球技术公司 | Hinge for a vehicle hood |
-
2012
- 2012-06-20 CN CN 201220291025 patent/CN202641602U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102700497A (en) * | 2012-06-20 | 2012-10-03 | 湖南大学 | Car engine hood bounce device based on pedestrian head injury protection |
| CN105442965A (en) * | 2014-09-23 | 2016-03-30 | 福特全球技术公司 | Hinge for a vehicle hood |
| CN105442965B (en) * | 2014-09-23 | 2019-11-12 | 福特全球技术公司 | Hinge for hood of vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20150620 |
|
| EXPY | Termination of patent right or utility model |