Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
  • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
  • B60R19/48—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds
  • B60R19/483—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects combined with, or convertible into, other devices or objects, e.g. bumpers combined with road brushes, bumpers convertible into beds with obstacle sensors of electric or electronic type
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
  • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
  • B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
  • B60R21/0136—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
  • B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
  • B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
  • B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
  • B60R2019/186—Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material

Definitions

• the invention relates to a vehicle with a bending cross member and a
• Bumper unit wherein at least one impact element and at least one detection unit for detecting an impact are arranged between the bending cross member and the bumper unit.
• a vehicle which has a bending cross member and a bumper unit, wherein an absorber element formed from a foam is arranged between the bending cross member and the bumper unit.
• a hose sensor system in particular for detecting a pedestrian impact, is arranged in the absorber element.
• the invention is based on the object, an improved vehicle with a
• the groove is formed, in which the hose sensor system is arranged as a detection unit for impact with the bumper unit, wherein the fact that the projecting surfaces and the surface of the groove in total are smaller than the largest cross-sectional area of the impact element, a signal detection of the hose sensor can be improved.
• the impact element has such a configuration in the region of the groove on a comparatively low rigidity, so that a compression of a material of the impact element is improved in an impact and from this a higher deformation of the hose for detecting the impact results. As a result, a signal quality for detecting an impact can be increased.
• the impact element has a wedge-shaped design, it is possible to collect a profile of impact-related force paths and to focus on the hose sensor system in the groove.
• the hose sensor may be part of a pedestrian protection device, by means of the tube sensor also other living things and / or obstacles to which the vehicle, for. B. at a parking, bounces or bounce on the vehicle, such as cyclists, are detectable.
• Fig. 1 shows schematically a first embodiment of an impact element with arranged hose sensor
• Fig. 2 shows schematically a second embodiment of an impact element with arranged hose sensor. Corresponding parts are provided in all figures with the same reference numerals.
• Figure 1 shows a sectional view of a bumper unit 1 with a
• Impact element 1.1 and a bending cross member 2 of a front portion of a vehicle Impact element 1.1 and a bending cross member 2 of a front portion of a vehicle.
• the bumper unit 1 usually extends over a width of the front area, wherein a body of the vehicle is to be protected by means of the bumper unit 1 so that collisions at low speeds have little or no damage to the vehicle result.
• the bumper unit 1 serves as a receiving element for functional components, such. B. headlights and distance sensors. Furthermore, the bumper unit 1 also serves to protect persons involved in accidents.
• the bumper unit 1 consists essentially of a body panel forming the outside bumper portion 1.2 and the impact element 1.1, which is arranged between the bumper portion 1.2 and the opposite bending cross member 2.
• the bending cross member 2 is part of a vehicle frame, not shown, wherein the bending cross member 2 is attached as a separate bending cross member 2 on the vehicle frame or forms an integral part of the vehicle frame.
• the impact element 1.1 is formed from a foam and serves as a shock-absorbing impact damper as well as a receiving unit for a detection unit 3 embodied as a hose sensor for detecting an impact on the
• the detection unit 3 in the form of the tube sensor is formed from a tube whose tube openings are sealed fluid-tight, wherein a tube interior is filled with air and / or another fluid medium.
• a tube opening is closed by a pressure sensor, the tube interior representing the detection area of the pressure sensor.
• the pressure sensor By means of the pressure sensor, a pressure change in the interior of the hose can be detected, which results from an impact-induced deformation of the hose.
• the hose sensor system as a detection unit 3 is part of a
• Pedestrian protection device so that when a detected impact on the bumper unit 1, a protection means for the protection of the pedestrian is triggered.
• the detection unit 3 designed as a tube sensor, however, other living beings and / or obstacles to which the vehicle, for. B. at a
• a groove N formed by means of two web-shaped formations 1.1.1, 1.1.2 is introduced into the impact element 1.1, wherein the web-shaped formations 1.1.1, 1.1.2 protrude horizontally from the impact element 1.1.
• a first web-shaped formation 1.1.1 is arranged below a second web-shaped formation 1.1.2.
• the groove N formed by the two web-shaped formations 1.1.1, 1.1.2 extends transversely to the vehicle longitudinal direction in a lower region of the impact element 1.1, wherein the groove N can also be formed in a middle or upper region of the impact element 1.1.
• the groove N extends over an entire width of the impact element 1.1 and thus the bumper unit 1, wherein the groove N is formed on the side of the impact element 1.1, which faces the bending cross member 2.
• a slot opening faces the bending cross member 2.
• the depth of the respective web-shaped formation 1.1.1, 1.1.2 largely corresponds at least to the depth of the groove N.
• the depth of the groove N is 9 mm, so that the depth of the respective web-shaped formations 1.1.1, 1.1.2 is also 9 mm ,
• the impact element 1.1 has a third web-shaped formation 1.1.3, which delimits the side of the groove N on the impact element 1.1.
• Forming 1.1.3 is essentially dimensioned as the depth of the two web-shaped formations 1.1.1, 1.1.2, by means of which the groove N for the
• Hose sensor is formed as a detection unit 3.
• the third web-shaped formation 1.1.3 can be used as a function of the formation of the two other web-shaped formations 1.1.1, 1.1.2 be formed in another area on the impact element 1.1.
• a plurality of additional web-shaped formations are formed as only the third web-shaped formation 1.1.3 on the impact element 1.1, which also have a depth corresponding to the depth of the first and the second web-shaped formation 1.1.1, 1.1.2.
• the signal quality can be influenced, since in a collision with the bumper unit 1, the hose of the hose sensor in web-shaped
• Forms 1.1.1, 1.1.2 is compressed with a lower height more than when the web-shaped formations 1.1.1, 1.1.2 have larger dimensions in terms of height.
• the dimensions in relation to the heights of the web-shaped formations 1.1.1 to 1.1.3 can vary over a width of the impact element 1.1. In this way, a homogeneous signal quality regardless of the position of the impact on the bumper unit 1 can be achieved.
• Embodiment of Figure 1 prevents the impact element 1.1 in an impact, such as a person to the bumper unit 1, tilted, whereby the signal quality or signal reproducibility could not be sufficient.
• the impact element 1.1 can not be supported with the entire side facing the bending cross member 2, but only with the web-shaped formations 1.1.1 to 1.1.3.
• the web-shaped formations 1.1.1 to 1.1.3 are less rigid formed, whereby an impact-induced compression is facilitated and the hose deformed as a detection unit 3 hose sensor deforms more. A signal can thus be detected and forwarded with a comparatively high signal quality.
• the first and second web-shaped form 1.1.1, 1.1.2 and the third
• the web-shaped formations 1.1.1 to 1.1.3 may have a predeterminable distance to an upper and lower edge of the impact element 1.1.
• the groove N is formed centrally with respect to the height of the impact element 1.1, the third web-shaped formation 1.1.3 and / or further additional web-shaped
• Moldings are dispensed with.
• FIG. 2 shows a second embodiment of an impact element 1.1.
• the impact element 1.1 is wedge-shaped, with a comparatively long side 1.1.4 and a comparatively short side 1.1.5 facing each other.
• the long side 1.1.4 is in the direction of the bumper part 1.2 and the short side 1.1.5 is arranged in the direction of the biege cross member 2.
• the groove N is to arrange the hose sensor as
• Detecting unit 3 introduced for detecting an impact, wherein the groove N is arranged substantially centrally with respect to the height of the short side 1.1.5.
• a force path of an impact is guided over the geometry of the impact element 1.1, whereby the tube deforms and the impact can be detected by the pressure sensor as a signal with a relatively good signal quality.
• the force paths on the long side 1.1.4 can be collected and, with appropriate shaping of the impact element 1.1, aligned with the hose sensor as a detection unit 3 in the groove N.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Force Measurement Appropriate To Specific Purposes (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=47140471

Family Applications (1)

Country Status (2)

Cited By (9)

Families Citing this family (9)

Citations (5)

• 2012
  • 2012-03-08 DE DE201210004766 patent/DE102012004766A1/de not_active Ceased
• 2013
  • 2013-03-02 WO PCT/EP2013/000612 patent/WO2013131629A1/fr not_active Ceased

Patent Citations (5)

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