JP2007506607A - Device for protecting people in the event of a frontal collision with a motor vehicle - Google Patents

Abstract

A compact and simple device is provided.
The device has an elongated housing (1) that can be securely attached to a vehicle, the housing having an upper portion (1c) that is guided so as to rise linearly, The hinge support is attached or the upper part directly forms the hinge support.

Description

  The invention relates to a device according to the preamble of claim 1.

  A number of accidents have occurred every year, with pedestrians, skaters, or two-wheeled vehicles being hit by motor vehicles and thrown to the front hood or engine hood and windshield, causing at least serious injury. In this case, especially the head and upper body of adult accident victims are at risk. This is because, in the case of a collision with a motor vehicle, this person is almost at the rear hood in a relatively hard area at the rear of the front hood, as shown by collision experiments and actual experience. They are hit and injured considerably.

  Based on these demands, the automotive industry is eagerly addressing the problem of improving human protection in this regard.

  A series of possibilities for solving this problem are known. For example, a net-like holding element in front of the windshield or an airbag in the transition region between the windshield and the windshield that can be inflated by sensor control in the event of a collision.

  DE 28 14 107 A in conjunction with DE 28 41 315 presents another solution principle that reduces the risk of injury in the event of a human collision with the front hood. This principle is based on the idea of remarkably mitigating the rear region of the front hood opposite to the running direction, the relatively hard and rigid impact region located in that region. This is caused by a device for adjusting the front hood, which is actuated by a collision sensor, from a stationary position to a flexible collision position that is lifted relative to this stationary position, i.e. by a so-called "active front hood". It is. When the front hood is detected by a collision sensor, it is flexibly adjusted to a stationary position, that is, a collision position lifted from a normal position, in the event of a collision with a person. A distance to the engine, etc., ie a deformation distance of the vehicle body that acts in a more favorable direction of energy reduction in the event of a human chest or head collision. This deformation distance causes a slow deceleration of the head and chest and a reduced risk of injury.

  A series of structural possibilities with different operating methods are known for "active" lifting of the front hood.

  For example, DE 197 12 961 A1 shows protection against collisions by means of an “active front hood” that is rotatably mounted on the windshield side by means of a hinge device. The hinge device is indirectly attached to the vehicle body at the front of the vehicle by a hinge support that is pivotally or movably mounted, and in the event of a collision, the front hood engages with the hinge support. By means, preferably spring energy storage means, it can be swung or moved upwards or lifted.

  This known structure is based on the idea that the hinge device itself is lifted above the vehicle by the attached hinge support. Therefore, it is not necessary to provide complex release means between the hinge device and the front hood in the event of a collision.

The present invention is based on this structural principle.
In the known example, three embodiments are shown.

  In the first embodiment, the front end portion of the hinge support that forms the base plate for the hinge device is articulated to the post for the front fender by the rotation axis of the screw plate. Has been. The rear end portion of the hinge support is locked to an eccentrically mounted locking bar by sensor controlled locking means. At a predetermined distance from the rotating shaft, energy storage means, for example a pre-loaded coil spring, is articulated to the hinge support. In the event of a collision, the locking means is released and the hinge support is released. This hinge support is pivoted quickly about the axis of rotation because of the pre-loaded coil spring, lifting the front hood together with the hinge device by a predetermined angle. In addition, two embodiments are also shown in which the hinge support is raised by a link guide in the event of a collision by a link guide without a pivot bearing. In one embodiment, the hinge support rests on two arched guide arms. In the other embodiment, a piston / cylinder unit is provided which is inclined and is connected to the hinge support via an intermediate element which deflects the force.

  In the case of ascent of the hinge support by one guide arm and in the case of ascent by two guide arms, a means for diverting the force is necessary during the ascent. This causes a loss of force due to the disassembly of the components in addition to the friction loss. This proves to be inconvenient in the very use of spring energy storage means for ascent. This is because the spring energy storage means must be reasonably large in size and therefore require considerable space not necessarily used where the lifting device must be attached. Furthermore, a greater force is required during manual return or reverse movement of the hinge support. Furthermore, in the case of a hinge support guide with two guide arms, a curved track is required. This, in addition to the aforementioned drawbacks, requires a curved track for the spring of the spring energy storage means. This track is only made very expensive to ensure that the hinge support is raised.

  In order to protect the person in the event of a frontal collision with the motor vehicle, the device described in the specification introduction part is further configured so that no force deflection is required when the front hood is raised by the spring energy storage means. The problem of forming such that a very compact and relatively simple structure of the protective device is achieved is the basis of the present invention.

  The solution to this problem is a device for protecting a person in the event of a frontal collision with a motor vehicle, the motor vehicle having a front hood that covers the front of the vehicle, the front hood on the windshield side, On both sides of the vehicle, it is rotatably connected to the vehicle body at the front part of the vehicle via each hinge device, and this protection device is connected to the vehicle body side of the hinge device at the vehicle body side. A hinge support body that is attached so as to be able to be raised, a spring energy storage device for raising the hinge support body, and a release / presser device having an actuator controlled by a sensor. The hinge support is pressed down in the basic state, and in the event of a collision, it can be released by sensor control while lifting the front hood in the hinge area for limited ascending motion (working stroke). I can do it According to the invention, the device has a long housing which can be securely attached to the vehicle, the housing having a top which is guided in a linearly liftable manner. The hinge support is attached or the upper part directly forms the hinge support, and at one end is rotatably connected to a support bolt that extends firmly and parallel to the housing. And the other end is provided with two swiveling levers having a plurality of guide bolts, and the guide bolts are slidably held in the guide holes. Each of the plurality of swiveling levers is divided by at least one lifting spring for preloading the swiveling levers in the lifting direction. By being temple, it is realized.

  The hinge support of the lever / lifting device according to the present invention, which is guided so as to be lifted linearly, guarantees the same and reliable lifting of the hinge support. The simple structure of the lever lifting device allows a simple and inexpensive structure of the device.

  Compact, capable of absorbing large forces in the longitudinal direction when extended, even with the shortest full length (closed full length is shorter than the moving up stroke) and even a small width, thanks to the nested housing part It is advantageous to be able to form a simple system.

  The present invention will be described in detail with reference to the embodiments shown in the drawings in various figures and states.

The device according to the invention, shown in the drawing, for protecting a person in the event of a frontal collision with a motor vehicle, has a front hood of the motor vehicle attached to the side of the windshield by a hinge device. This is based on the principle that, in the case of a collision, the vehicle is lifted by a predetermined stroke with respect to the vehicle body at the front portion of the vehicle, including the front hood hinge device, in the attachment region.

  The device first has a substantially rectangular housing 1. This housing has a sensor-controlled component for actively raising the front hood and is attached to the body of the front part of the vehicle in the conventional manner in the area of the hinge device, preferably in the fender post. Has been. In this case, such devices are attached to both sides of the front portion of the vehicle.

  In the illustrated embodiment shown in FIGS. 1-4, the housing comprises three housing parts that are nested together, and a lower part 1a that forms the bottom of the housing with a plurality of side walls and is firmly attached to the vehicle body. And a movable intermediate portion 1b for extending a plurality of side walls, and a similarly movable upper portion 1c that forms a lid portion of the housing together with the plurality of side walls. The individual housing parts typically have corresponding guides on the end faces. The purpose is to ensure a reliable and non-tilting rise of the middle part and the upper part.

  The upper part 1c has a substantially rectangular plate 2 (hereinafter referred to as a rising plate) on the head side. The lift plate is typically attached with a hinge support. The hinge support can be eccentrically connected like a seesaw. A hinge device corresponding to a front hood, for example, a hinge (4-Gelenk-Scarnier) consisting of four joints is attached to the vehicle body side as is well known. A hinge flange is provided to attach the front hood. Two upper joints of the hinge rod are connected to the hinge flange.

  However, the raising plate may also be formed directly as a hinge support.

  For example, as shown in FIGS. 3 and 4, when the lift plate is unwound, the hinge support and thus also the hinge device is raised with the rear of the front hood. In this case, the hinge support and thus the hinge device and the front hood of the passenger car are not shown for the sake of clarity.

  In the lower part 1a of the housing firmly attached to the vehicle body, two support bolts (3, 4) are firmly attached in parallel to each other in the region of the end face of the long side wall. Rotating levers 5 and 6 are rotatably attached to these support bolts, respectively. Further, a large spring force of the raising coil springs 7 and 8 is applied to these support bolts. Due to this spring force, the leg portions are firmly tensioned to the housing, and the other leg portions each grip the swivel lever while supporting the corresponding swivel lever in the upward direction.

  The free ends of the turning levers 5 and 6 having the same length and intersecting with each other have guide bolts 9 and 10, respectively. The guide bolt is held in the guide holes 11 and 12 while being guided. These guide holes are formed in the lower extensions 13 a and 13 b of the support plate 13. The support plate itself is attached to the lower side of the rising plate 2. This support plate can be omitted if the riser plate has a correspondingly large size.

  Furthermore, attached to the lower part 1a of the housing is a pyrotechnic actuator 14 which is controlled by a sensor and has a bolt 14a which is pushed out when activated. A two-arm type presser pawl 15 that is preloaded in the presser direction by a presser coil spring 16 is rotatably connected. The upper arm, the presser arm, and the presser claw 15 are operatively engaged with the presser claw 17, while the lower arm and the control arm are operatively engaged with the bolt 14 a of the actuator 14.

  In addition, on the bottom of the housing, a screw sleeve 18 for the reverse movement of the raised system, which will be described, is securely mounted on the corresponding opening.

  In the basic state shown in FIGS. 1 and 2, the housing parts 1 to 1c are telescopically folded, and the swivel levers 5 and 6 are folded and are in a horizontal state. The coil springs 7 and 8 for raising are preloaded. The hook-like presser arm of the presser pawl 15 is operatively engaged with the presser pawl 17 and presses the support plate 13 together with the lift plate (hinge support) against the preload of the lift spring.

  When the actuator 14 is released, this actuator pushes out the bolt 14a. The bolt rotates the presser pawl 15 while opening it against the spring force of the coil spring 16 for presser. As a result, the action engagement between the presser claw 15 and the presser claw 17 is canceled. A large preload is applied to the strong coil springs 7 and 8 for ascending, and the swiveling levers 5 and 6 are rotated while rotating. In this case, the guide bolts 9 and 10 slide along the ends of the pivot lever in the guide holes 11 and 12 of the support plate and thus also in the upper part 1c of the housing. The upper part 1c is guided in parallel and the arm of the swivel lever is rotated, so that an upward movement is performed. The horizontal relative stroke resulting from the circular movement of the swivel lever is compensated by the guide holes 11 and 12 formed by the long holes. The raised state is shown in FIGS.

  Increased in the case of an unneeded release, or in case of release without a human intervention, without a minor collision or by a minor collision, for example when entering or leaving a car, or in the case of a release for inspection purposes It is necessary to reverse the system. This is most easily and cheaply done manually. Since the force of the lift springs 7 and 8 is so high that the systems that are lifted on both sides of the front of the vehicle must be reversed as much as possible to prevent the large area front hood from bending. Auxiliary tools are needed.

  The reverse motion is made using a reverse bar having a threaded portion. The reverse bar is attached to the screw sleeve 18 through the opening 2a formed in the ascending plate 2, and is in contact with the ascending plate with its own annular collar. The reverse bar is screwed in until the working engagement for pressing between the presser pawl 15 and the presser pawl 17 is formed again. After this, the reverse bar is removed. This reverse movement is executed alternately in the two lifting devices in a plurality of processes.

  5 and 6 show a second embodiment of the present invention. In this embodiment, the movement of the two swivel levers is actuated simultaneously to improve the even rise of the two swivel levers. As long as the components are functionally identical to the components of FIGS. 1-4, these components have the same reference numerals.

  Unlike the first embodiment, the two swivel levers 5 and 6 are rotatably mounted in alignment with each other on the two support bolts 3 and 4 provided in parallel with the lower portion 1a in the center of the housing. It has been. These swivel levers have a plurality of gears 19, 20 in the support area. These gears, when installed, mesh with each other, thus ensuring simultaneous rotational movement.

  The swivel levers 5 and 6 are preloaded in the basic state of the system by the double coil springs 7 and 8 for raising, respectively. Between these coil springs, respectively assigned pivot levers are located.

  The two swivel levers have guide bolts 9, 10 which are securely attached to the upper arm, respectively. These guide support bolts slide in the guide holes 11 and 12 as in the first embodiment. These guide holes are formed in extensions 13a and 13b of the upper portion 1c of the housing which can be raised.

  As shown in FIGS. 1 to 4, a presser claw 17 is formed on the extension portion 13 a. The presser claw 15 preloaded by the spring is latched to the pressed claw. The presser claw is firmly connected to the housing in a freely rotatable manner at the lower part 1a.

  When the actuator 14 is released, this actuator pushes out the bolt. The bolt turns the presser pawl 15 against the force of the presser coil spring 16, thereby releasing the presser pawl 17. As a result, the two double coil springs 7 and 8 for ascending cause the swiveling levers 5 and 6 to pivot while being lifted during the simultaneous operation. The upper part 1c of the housing is entrained by the guide bolts 9, 10 and the support plate extensions 13a, 13b.

  The raised state is indicated by a dotted line in FIG.

  Furthermore, what has been said for the second embodiment applies accordingly.

  With respect to the lifting system, this is illustrated in FIGS. 5 and 6 when a desired angular position of the upper part 1c of the housing is desired during front hood lifting, for example to ensure position movement, rather than parallel adjustment. In a modified embodiment of the second embodiment, this is achieved by adapting the guide holes to the lengths of the asymmetrical levers of the pivot levers 5,6.

  Although the illustrated embodiments are preferred embodiments, it is obvious that the present invention is not limited to these embodiments.

  The housing 1 is designed not only in a three-part configuration as in FIGS. 1 to 4 but also in a one-part configuration as in the case of the embodiment shown in FIGS. And has a riser plate that forms the lid of the housing. The rising plate has a plurality of additional guides, and extensions 13a and 13b are attached to the rising plate.

  In fact, the presser / release systems (14 to 17) may be formed differently. For example, this presser / release system may have a holding bolt that is gripped by a rotary pawl instead of the presser pawl 17. Instead of a pyrotechnic actuator, a recovery electromagnet operable by a power source may be provided, and the reverse movement may be performed in other ways.

1 shows an isometric view of a first embodiment of a swivel lever raising device for a hinge support according to the present invention in a retracted basic state. Fig. 2 shows a longitudinal section of the device shown in Fig. 1 in a retracted basic state. Fig. 2 shows an isometric view of the lifting device shown in Fig. 1 in a released and lifted state. The apparatus shown in FIG. 3 in the same extended state is shown in a longitudinal sectional view. FIG. 7 is a horizontal sectional view of the apparatus shown in FIG. 6. A second embodiment showing that the ascending movement of the swivel lever is operated simultaneously with a symmetrical swivel lever by means of a gear is shown in a substantially vertical longitudinal section. Fig. 9 shows a horizontal sectional view of the device shown in Fig. 8; FIG. 7 is a schematic longitudinal sectional view showing a third embodiment showing a turning lever which is simultaneously operated as shown in FIG. 6, but an asymmetric turning lever.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing 1a Lower part of housing 1b Middle part of housing 1c Upper part of housing 2 Ascending plate 2a Opening part 3 Support bolt 4 Support bolt 5 Turning lever 6 Turning lever 7 Coil spring for raising 8 Coil spring for raising 9 Guide bolt 10 Guide Bolt 11 Guide hole 12 Guide hole 13 Support plate 13a (Support plate) extension 13b (Support plate) extension 14 Actuator 14a Pushable bolt 15 Presser claw 16 Presser coil spring 17 Presser claw 18 Screw sleeve 19 Gear 20 Gear

Claims (11)

An apparatus for protecting a person in the event of a frontal collision with an automatic vehicle, the automatic vehicle having a front hood that covers the front of the vehicle, the front hood on the windshield side, on both sides of the vehicle, It is rotatably connected to the vehicle body at the front of the vehicle through each hinge device,
The hinge device is connected to the vehicle body side and is attached to the vehicle body at the front of the vehicle so as to be able to ascend, a spring energy storage device for raising the hinge support, and a sensor The release / holding device has an actuator controlled by the actuator, and the release / pressing device has a hinge support that is pressed down in the basic state. In a device formed so that the front hood can be released by sensor control while lifting the front hood in the hinge region,
This device has a long housing (1) that can be securely attached to a vehicle, and this housing has an upper part (1c) that is guided so as to be raised in a straight line. A support is attached or the upper part directly forms the hinge support, and at one end is rotatable to support bolts (3, 4) which extend firmly parallel to each other on the housing Two pivot levers (5, 6) having a plurality of guide bolts (9, 10) are provided at the other end, and the guide bolts are provided in the guide holes (11, 12). These guide holes themselves are formed in extensions (13a, 13b) coupled to the upper part (1c) of the housing, and the swivel levers (5, 5) 6), each of which And wherein the at least one rising springs (7,8) is allocated to preload the upward swirling lever (5,6) of the.   The lifting springs (7, 8) are formed as coil springs held by the support bolts (3, 4), and one leg of these coil springs is firmly tensioned to the housing. 2. The device according to claim 1, wherein the other leg holds the corresponding pivot lever.   Device according to claim 1 or 2, characterized in that the two swivel levers (5, 6) are of the same length.   The two support bolts (3, 4) are respectively provided in a housing region adjacent to an end face, and the swivel levers (5, 6) are displaced laterally from each other, and the support bolts (3,4) 4. The device according to claim 3, wherein the guide bolts (9, 10) of the swiveling levers that are attached to the crossing are held in the corresponding guide holes (11, 12). 5. .   Device according to claim 1 or 2, characterized in that the two swivel levers (5, 6) are of different lengths.   The two support bolts (3, 4) are provided in the center of the housing, and the two swivel levers (5, 6) are attached to the support bolt in a straight line with each other. The apparatus according to claim 5.   In the support area of the swivel levers (5, 6), gears (19, 20) are respectively attached to portions around the rounded ends of the levers, and the plurality of gears facing each other are attached. 7. A device according to claim 6, characterized in that it is engaged in the engaged state.   Device according to claim 2 or 7, characterized in that each swiveling lever (5, 6) is assigned a double coil spring (7, 8).   The release / holding device has a presser pawl (15) which is firmly connected to the housing and preloaded in the closing direction, the presser pawl for releasably acting engagement with the actuator (14). 2. A control arm, and a presser arm (17) coupled to the upper part (1c) of the housing, and a presser arm for operatively engaging the releaser and the presser. The apparatus of any one of thru | or 8.   10. Device according to any one of the preceding claims, characterized in that the housing (1) is designed to be nested in a plurality of configurations.   11. A device according to any one of the preceding claims, characterized in that a screw socket (18) for receiving a reverse bar is attached to the bottom of the housing.

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