WO2012093945A1 - Impact energy converting device, especially for bumpers in automotive vehicles - Google Patents

Impact energy converting device, especially for bumpers in automotive vehicles Download PDF

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Publication number
WO2012093945A1
WO2012093945A1 PCT/PL2011/050042 PL2011050042W WO2012093945A1 WO 2012093945 A1 WO2012093945 A1 WO 2012093945A1 PL 2011050042 W PL2011050042 W PL 2011050042W WO 2012093945 A1 WO2012093945 A1 WO 2012093945A1
Authority
WO
WIPO (PCT)
Prior art keywords
rack
crosswise
kinetic energy
longitudinal
racks
Prior art date
Application number
PCT/PL2011/050042
Other languages
French (fr)
Inventor
Lucjan ŁĄGIEWKA
Stanisław GUMUŁA
Original Assignee
Centrum Badawczo-Rozwojowe Epar Sp. Z O.O.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Centrum Badawczo-Rozwojowe Epar Sp. Z O.O. filed Critical Centrum Badawczo-Rozwojowe Epar Sp. Z O.O.
Priority to EP11782487.0A priority Critical patent/EP2678190A1/en
Publication of WO2012093945A1 publication Critical patent/WO2012093945A1/en

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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
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/10—Vibration-dampers; Shock-absorbers using inertia effect
    • F16F7/1022—Vibration-dampers; Shock-absorbers using inertia effect the linear oscillation movement being converted into a rotational movement of the inertia member, e.g. using a pivoted mass
    • 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
    • B60R19/24—Arrangements for mounting bumpers on vehicles
    • B60R19/26—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means
    • B60R2019/262—Arrangements for mounting bumpers on vehicles comprising yieldable mounting means with means to adjust or regulate the amount of energy to be absorbed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2232/00—Nature of movement
    • F16F2232/06—Translation-to-rotary conversion

Definitions

  • An object of this invention is an impact energy converting device, especially for bumpers in automotive vehicles, destined to convert kinetic energy of progressive motion created during a collision into kinetic energy of rotary motion.
  • the invention is applied especially in automotive vehicles and in other objects exposed to sudden impact effects.
  • a device converting kinetic energy comprising a ram element in cooperation by means of a compressed fluid chamber with an impact energy dissipating unit constructed as a rack moving spinning masses in order to smoothly convert kinetic energy of progressive motion created by an impact into kinetic energy of rotary motion.
  • the aim of this invention is to obtain more effective impact energy dissipation by appropriate orientation of a part of non-converted kinetic energy of progressive motion so as to minimize energy transferred in direction of the impact onto a body of a protected vehicle.
  • a device comprises a ram element coupled with at least one longitudinal rack transferring impact energy onto at least one kinetic energy rotary accumulator in which kinetic energy of progressive motion is converted into kinetic energy of rotary motion.
  • This solution is characterized in that at least one said longitudinal rack is engaged by means of at least one toothed wheel with a crosswise rack having its direction of motion inclined from a direction of motion of the longitudinal rack, the said crosswise rack driving the kinetic energy rotary accumulator by a transmission increasing the rotation speed.
  • the toothed wheel transferring driving motion from the longitudinal rack onto the crosswise rack drives an additional kinetic energy rotary accumulator.
  • the crosswise rack drives the kinetic energy rotary accumulator by means of a band transmission.
  • a cushion member is located between the longitudinal rack and the ram element.
  • the device according to the invention comprises one longitudinal rack engaged with the crosswise rack by the toothed wheel.
  • the device according to the invention comprises two parallel longitudinal racks engaged by toothed wheels with two crosswise racks, the said crosswise racks when shifting the longitudinal racks are driven in opposite directions in relation to one another .
  • longitudinal rack used in this patent specification means a rack situated in the device according to the invention substantially parallel to the direction in which an expected impact force acts, whereas a term “crosswise rack” relates to a rack having its shift direction inclined in relation to the longitudinal rack.
  • the longitudinal rack is a driving one
  • the crosswise rack is a driven one.
  • Fig. 1 shows a device having two longitudinal racks driving two perpendicular racks in perspective view
  • Fig. 2 shows the device in top view
  • Fig. 3 shows the device in rear view
  • Fig. 4 shows the device in side view with a cross- section through a ram element and a body plate
  • Fig. 5 shows the device in cross-section along the line A-A shown in Fig. 2;
  • Fig. 6 shows the device in cross-section through the axes of a band transmission
  • Fig. 7 shows the device in cross-section through the axis of a toothed wheel engaged with two racks
  • Fig. 8 shows a magnified cross-section of the rotary accumulator of kinetic energy
  • Fig. 9 shows perspective view of the device having one longitudinal rack driving one crosswise rack
  • Fig. 10 shows the device of Fig. 1 in perspective view during converting impact energy together with the indicated directions in which particular elements of the device are rotated and shifted in action.
  • Fig. 1 an embodiment of the device according to the invention is shown having a ram element 1 formed as a beam and connected with two longitudinal racks 2 located on runners 3 which are fastened to a body plate 4 to be mounted in a load-bearing structure of an object exposed to the results of an unexpected impact.
  • the object exposed to the results of the unexpected impact is not shown in the drawing .
  • Each of the longitudinal racks 2 has a sliding part 5 located slidably in a through opening of the runner 3, as well as a toothed part 6 meshed with a toothed wheel 7 rotary mounted on an axis 8 mounted on the body plate 4.
  • Each of the toothed wheels 7 drives a crosswise rack 9 located slidably in a crosswise runner 10 permanently fastened to the body plate 4, and the crosswise rack 9 cooperates with a toothed wheel 11 which by means of a band transmission 12 increasing rotational speed drives a rotary kinetic energy accumulator 13. Transmitting kinetic energy of rotary motion from the band transmissions 12 onto the kinetic energy rotary accumulators 13 is carried on by means of driven wheels 14 in the band transmissions 12, sleeves 15 and one-way clutches 16, whereas the sleeves 15 are fastened rotatably on axles 17 fastened in the body plate 4.
  • the toothed wheels 7 are connected through one-way clutches 18 with additional kinetic energy rotary accumulators 19.
  • the one-way clutches 16, 18 of known structure transmit a torque onto the kinetic energy rotary accumulators 13, 19.
  • the one-way clutches 16, 18 are disconnected to enable free and long-lasting rotation of the said kinetic energy rotary accumulators until gathered kinetic energy is completely dissipated.
  • the longitudinal racks 2 used in the device according to the invention as driving racks are mounted perpendicularly to the ram element 1 and simultaneously perpendicularly to the driven crosswise racks 9.
  • the device according to the invention comprises moreover cushioning elements 20 situated between the longitudinal racks 2 and the ram element 1.
  • the cushioning elements 20 are made of rubber. Other elastic plastics may be used too, as well as metals with a lower compression strength. Fluid, elastomer or spring shock absorbers may be also used as cushioning elements 20.
  • An object of cushioning elements 20 is to initially dampen the kinetic energy in order to obtain lower impact load in gear transmissions transferring the kinetic energy.
  • the device has an additional spring shock absorbing unit 21 placed in the sliding elements 5 of the longitudinal racks 2 inside the runners 3.
  • the runners 3 of the longitudinal racks 2 and the runners 10 of the crosswise racks 9 are fastened to the body plate 4 perpendicularly one to another.
  • the runners 3 of the longitudinal racks 2 are situated perpendicularly to the ram element 1.
  • the body plate 4 is fastened to a load-bearing structure of a protected object, for example a car (not shown in the drawing) by means of fastening elements 22.
  • a protected object for example a car (not shown in the drawing)
  • the fastening elements 22 may be realized by means of welding, riveting, gluing, screwing, as well as by other connecting methods which may be used in a structure of an object protected against impact effects.
  • Arrows perpendicular to an outer surface of the ram element 1 show an expected direction of the impact force. Each angular deviation of the impact force from the expected impact direction increases probability of damages to the device and is a cause of decrease in impact energy taking over and dissipating effectiveness.
  • the device according to the invention should be used in objects exposed to unexpected impacts in such a way that the expected impact force is substantially perpendicular to the outer surface of the ram element 1.
  • FIG. 3 Fig. 4 and Fig. 5 there are precisely shown the details connected with the arrangement and cooperation of particular elements of the device according to the invention having two longitudinal racks 2 driving two crosswise racks 9.
  • Fig. 6 there is schematically shown a section across axes of the band transmission 12.
  • the toothed wheel 11 driven by the crosswise rack 9 is connected axially by a bush 23 with the driving wheel 24 of the band transmission 12, and the driven wheel 14 of this transmission is connected axially by the bush 15 and the one-way clutch 16 with the kinetic energy rotary accumulator 13.
  • the belt transmission with a driving belt 25 is shown as the band transmission 12.
  • the toothed belt transmission or chain transmission may be used, and for still greater energies - gear transmissions may be used instead of the band transmissions 12.
  • Fig. 7 shows an axial section through the toothed wheel 7 fastened rotatably on the axis 8.
  • a bush part of the toothed wheel 7 is connected by the one-way clutch 18 with an additional kinetic energy rotary accumulator 19.
  • the one-way clutch 18 of the known structure is placed between a bush part of the toothed wheel 7 and an inner surface of the kinetic energy rotary accumulator 19.
  • the kinetic energy rotary accumulator can freely rotate after receiving impact energy, what makes it possible to dissipate the energy gathered in it.
  • the device for converting and accumulating impact energy shown in Fig. 9 is an embodiment of the invention, where one longitudinal rack 2 cooperates by means of the toothed wheel 7 with one crosswise rack 9.
  • the runner 3 of the longitudinal rack 2 is perpendicular to the runner 10 of the crosswise rack 9, and both runners 3, 10 are fastened to the body plate 4.
  • two runners 26 for the ram element are used, fastened to the body plate 4 on both sides of the longitudinal rack 2.
  • the ram element 1 is guided by means of guiding tangs 27 mounted slidably in the runners 26, whereas the guiding tangs 27 are fastened perpendicularly to the ram element 1 and simultaneously parallel to the longitudinal rack 2.
  • Fig. 10 shows in perspective view the device according to the invention having two longitudinal racks driving two crosswise racks during receiving impact energy. Sliding and rotary motions of particular parts of the device are marked by corresponding arrows in this figure.
  • the body plate 4 is fastened to a load-bearing structure of a car (not shown in the drawing) by means of the fastening means 22 in order to enable receiving impact energy by the device according to the invention.
  • Kinetic energy of progressive motion acting during collision onto the ram element 1 is initially cushioned by the rubber cushioning elements 20, and is transferred onto the kinetic energy rotary accumulators 13 by the longitudinal racks, the toothed wheels 7, the crosswise racks 9, the toothed wheels 11 and the band transmission 12.
  • the speeding crosswise racks 9 When receiving greater impact energies, the speeding crosswise racks 9 after disengaging from the toothed wheels 7 and 11 may have yet substantial kinetic energy. In such a case, forces transferred onto the body plate 4, caused by braking the speeding crosswise racks 9, are balanced because during an impact the crosswise racks 9 of equal masses are driven in opposite directions, and have substantially the same speed.

Abstract

A device has a ram element (1) engaged with at least one longitudinal rack (2) transferring impact energy to at least one kinetic energy rotary accumulator (13) converting 5 kinetic energy of progressive motion into kinetic energy of rotary motion. A solution is characterized by that at least one longitudinal rack (2) is engaged by at least one toothed wheel (7) with a crosswise rack (9) having its sliding direction inclined in relation to a sliding 10 direction of the longitudinal rack (2), wherein the crosswise rack (9) drives the kinetic energy rotary accumulator (13) by a transmission (12) increasing a rotation speed.

Description

Impact energy converting device,
especially for bumpers in automotive vehicles
An object of this invention is an impact energy converting device, especially for bumpers in automotive vehicles, destined to convert kinetic energy of progressive motion created during a collision into kinetic energy of rotary motion. The invention is applied especially in automotive vehicles and in other objects exposed to sudden impact effects.
From patent application WO2004028864 a device protecting vehicles against impact effects is known, in which kinetic energy of progressive motion suddenly created as collision effect is converted into kinetic energy of spinning masses. To protect vehicles against impact effects in the known solution, a ram element is used which is connected with a rack cooperating with toothed wheels driving spinning masses. During a collision the ram element shifting direction is parallel to a direction in which the rack is shifted.
From patent application WO2005121593 a device converting kinetic energy is also known comprising a ram element in cooperation by means of a compressed fluid chamber with an impact energy dissipating unit constructed as a rack moving spinning masses in order to smoothly convert kinetic energy of progressive motion created by an impact into kinetic energy of rotary motion.
By using these known solutions, a substantial part of kinetic energy of progressive motion is converted during collision into kinetic energy of rotary motion, whereas the remaining part of non-converted kinetic energy of progressive motion is transferred according to an impact direction onto a body of a vehicle.
The aim of this invention is to obtain more effective impact energy dissipation by appropriate orientation of a part of non-converted kinetic energy of progressive motion so as to minimize energy transferred in direction of the impact onto a body of a protected vehicle.
A device according to the invention comprises a ram element coupled with at least one longitudinal rack transferring impact energy onto at least one kinetic energy rotary accumulator in which kinetic energy of progressive motion is converted into kinetic energy of rotary motion. This solution is characterized in that at least one said longitudinal rack is engaged by means of at least one toothed wheel with a crosswise rack having its direction of motion inclined from a direction of motion of the longitudinal rack, the said crosswise rack driving the kinetic energy rotary accumulator by a transmission increasing the rotation speed.
In an advantageous solution the toothed wheel transferring driving motion from the longitudinal rack onto the crosswise rack drives an additional kinetic energy rotary accumulator.
The direction in which the crosswise rack moves is
o
advantageously inclined at an angle of 90 m relation to a direction in which the longitudinal rack is shifted. Advantageously, the crosswise rack drives the kinetic energy rotary accumulator by means of a band transmission.
Advantageously, a cushion member is located between the longitudinal rack and the ram element.
In an advantageous solution the device according to the invention comprises one longitudinal rack engaged with the crosswise rack by the toothed wheel.
In a more advantageous solution the device according to the invention comprises two parallel longitudinal racks engaged by toothed wheels with two crosswise racks, the said crosswise racks when shifting the longitudinal racks are driven in opposite directions in relation to one another .
Greater effectiveness of converting kinetic energy of progressive motion into kinetic energy of rotary motion is achieved when a crosswise rack is located at an angle in relation to the longitudinal rack, and moreover a greater ability is achieved to direct the substantial remaining part of kinetic energy of progressive motion in a suitable side without converting it into kinetic energy of rotary motion depending on a position of the device according to the invention in relation to a vehicle.
When the direction in which the crosswise rack is inclined by an angle approximately equal to 90 degrees in relation to a direction in which the longitudinal rack is shifted, the most advantageous protection of a vehicle or another protected object against collision is achieved. Especially advantageous results are achieved when using two longitudinal racks engaged by toothed wheels with two crosswise racks in a case when crosswise racks are driven in opposite directions. In such a solution, a part of kinetic energy of progressive motion of crosswise racks is mutually neutralized.
A term "longitudinal rack" used in this patent specification means a rack situated in the device according to the invention substantially parallel to the direction in which an expected impact force acts, whereas a term "crosswise rack" relates to a rack having its shift direction inclined in relation to the longitudinal rack. According to the invention, the longitudinal rack is a driving one, and the crosswise rack is a driven one.
An object of the invention is schematically shown in its embodiments in the drawing, in which:
Fig. 1 shows a device having two longitudinal racks driving two perpendicular racks in perspective view;
Fig. 2 shows the device in top view;
Fig. 3 shows the device in rear view;
Fig. 4 shows the device in side view with a cross- section through a ram element and a body plate;
Fig. 5 shows the device in cross-section along the line A-A shown in Fig. 2;
Fig. 6 shows the device in cross-section through the axes of a band transmission,
Fig. 7 shows the device in cross-section through the axis of a toothed wheel engaged with two racks,
Fig. 8 shows a magnified cross-section of the rotary accumulator of kinetic energy, Fig. 9 shows perspective view of the device having one longitudinal rack driving one crosswise rack, and
Fig. 10 shows the device of Fig. 1 in perspective view during converting impact energy together with the indicated directions in which particular elements of the device are rotated and shifted in action.
In Fig. 1 an embodiment of the device according to the invention is shown having a ram element 1 formed as a beam and connected with two longitudinal racks 2 located on runners 3 which are fastened to a body plate 4 to be mounted in a load-bearing structure of an object exposed to the results of an unexpected impact. The object exposed to the results of the unexpected impact is not shown in the drawing .
Each of the longitudinal racks 2 has a sliding part 5 located slidably in a through opening of the runner 3, as well as a toothed part 6 meshed with a toothed wheel 7 rotary mounted on an axis 8 mounted on the body plate 4.
Each of the toothed wheels 7 drives a crosswise rack 9 located slidably in a crosswise runner 10 permanently fastened to the body plate 4, and the crosswise rack 9 cooperates with a toothed wheel 11 which by means of a band transmission 12 increasing rotational speed drives a rotary kinetic energy accumulator 13. Transmitting kinetic energy of rotary motion from the band transmissions 12 onto the kinetic energy rotary accumulators 13 is carried on by means of driven wheels 14 in the band transmissions 12, sleeves 15 and one-way clutches 16, whereas the sleeves 15 are fastened rotatably on axles 17 fastened in the body plate 4.
Moreover, in the embodiment shown in Fig. 1, the toothed wheels 7 are connected through one-way clutches 18 with additional kinetic energy rotary accumulators 19.
When the device according to the invention works, the one-way clutches 16, 18 of known structure transmit a torque onto the kinetic energy rotary accumulators 13, 19. After taking over the impact energy, when angular velocities of the driven wheels 14 in the band transmissions 12 or respectively the toothed wheels 7 are lower than angular velocities of the speeding kinetic energy rotary accumulators 13, 19, the one-way clutches 16, 18 are disconnected to enable free and long-lasting rotation of the said kinetic energy rotary accumulators until gathered kinetic energy is completely dissipated.
The longitudinal racks 2 used in the device according to the invention as driving racks are mounted perpendicularly to the ram element 1 and simultaneously perpendicularly to the driven crosswise racks 9.
The device according to the invention comprises moreover cushioning elements 20 situated between the longitudinal racks 2 and the ram element 1. In one embodiment the cushioning elements 20 are made of rubber. Other elastic plastics may be used too, as well as metals with a lower compression strength. Fluid, elastomer or spring shock absorbers may be also used as cushioning elements 20. An object of cushioning elements 20 is to initially dampen the kinetic energy in order to obtain lower impact load in gear transmissions transferring the kinetic energy.
As it is shown in the embodiment in Fig. 2, the device has an additional spring shock absorbing unit 21 placed in the sliding elements 5 of the longitudinal racks 2 inside the runners 3. The runners 3 of the longitudinal racks 2 and the runners 10 of the crosswise racks 9 are fastened to the body plate 4 perpendicularly one to another. Moreover, the runners 3 of the longitudinal racks 2 are situated perpendicularly to the ram element 1.
In order to enable receiving the impact energy by the device according to the invention, the body plate 4 is fastened to a load-bearing structure of a protected object, for example a car (not shown in the drawing) by means of fastening elements 22. Depending on the expected value of impact energy possible to be converted by the device according to the invention, the fastening elements 22 may be realized by means of welding, riveting, gluing, screwing, as well as by other connecting methods which may be used in a structure of an object protected against impact effects.
Arrows perpendicular to an outer surface of the ram element 1 show an expected direction of the impact force. Each angular deviation of the impact force from the expected impact direction increases probability of damages to the device and is a cause of decrease in impact energy taking over and dissipating effectiveness. Thus, the device according to the invention should be used in objects exposed to unexpected impacts in such a way that the expected impact force is substantially perpendicular to the outer surface of the ram element 1.
In Fig. 3, Fig. 4 and Fig. 5 there are precisely shown the details connected with the arrangement and cooperation of particular elements of the device according to the invention having two longitudinal racks 2 driving two crosswise racks 9.
In Fig. 6 there is schematically shown a section across axes of the band transmission 12. The toothed wheel 11 driven by the crosswise rack 9 is connected axially by a bush 23 with the driving wheel 24 of the band transmission 12, and the driven wheel 14 of this transmission is connected axially by the bush 15 and the one-way clutch 16 with the kinetic energy rotary accumulator 13. In this embodiment the belt transmission with a driving belt 25 is shown as the band transmission 12. When greater impact energy has to be transferred, the toothed belt transmission or chain transmission may be used, and for still greater energies - gear transmissions may be used instead of the band transmissions 12.
Fig. 7 shows an axial section through the toothed wheel 7 fastened rotatably on the axis 8. A bush part of the toothed wheel 7 is connected by the one-way clutch 18 with an additional kinetic energy rotary accumulator 19.
According to Fig. 8, the one-way clutch 18 of the known structure is placed between a bush part of the toothed wheel 7 and an inner surface of the kinetic energy rotary accumulator 19. By using the one-way clutch 18 in the device according to the invention, the kinetic energy rotary accumulator can freely rotate after receiving impact energy, what makes it possible to dissipate the energy gathered in it.
The device for converting and accumulating impact energy shown in Fig. 9 is an embodiment of the invention, where one longitudinal rack 2 cooperates by means of the toothed wheel 7 with one crosswise rack 9. The runner 3 of the longitudinal rack 2 is perpendicular to the runner 10 of the crosswise rack 9, and both runners 3, 10 are fastened to the body plate 4. In order to increase the shape rigidity of the device according to the invention, in the embodiment shown in Fig. 9 two runners 26 for the ram element are used, fastened to the body plate 4 on both sides of the longitudinal rack 2. The ram element 1 is guided by means of guiding tangs 27 mounted slidably in the runners 26, whereas the guiding tangs 27 are fastened perpendicularly to the ram element 1 and simultaneously parallel to the longitudinal rack 2. The crosswise rack 9, driven by the longitudinal rack cooperating with the toothed wheel 7, rotates the kinetic energy rotary accumulator 13 by means of the toothed wheel 11 and the band transmission 12. Moreover, the toothed wheel 7 is axially engaged with an additional kinetic energy rotary accumulator 19.
Fig. 10 shows in perspective view the device according to the invention having two longitudinal racks driving two crosswise racks during receiving impact energy. Sliding and rotary motions of particular parts of the device are marked by corresponding arrows in this figure. The body plate 4 is fastened to a load-bearing structure of a car (not shown in the drawing) by means of the fastening means 22 in order to enable receiving impact energy by the device according to the invention. Kinetic energy of progressive motion acting during collision onto the ram element 1 is initially cushioned by the rubber cushioning elements 20, and is transferred onto the kinetic energy rotary accumulators 13 by the longitudinal racks, the toothed wheels 7, the crosswise racks 9, the toothed wheels 11 and the band transmission 12. Moreover, a part of kinetic energy of progressive motion is transferred onto the additional kinetic energy rotary accumulators 19 driven by the longitudinal racks 2 and the toothed wheels 7. In this way, the kinetic energy accumulated in a short time during an impact has a possibility to dissipate in a substantially longer time.
When receiving greater impact energies, the speeding crosswise racks 9 after disengaging from the toothed wheels 7 and 11 may have yet substantial kinetic energy. In such a case, forces transferred onto the body plate 4, caused by braking the speeding crosswise racks 9, are balanced because during an impact the crosswise racks 9 of equal masses are driven in opposite directions, and have substantially the same speed.

Claims

Claims
1. Impact energy converting device, especially for bumpers in automotive vehicles, comprising a ram element engaged with at least one longitudinal rack transferring impact energy to at least one kinetic energy rotary accumulator, where kinetic energy of progressive motion is converted into kinetic energy of rotary motion, characterized in that at least one said longitudinal rack (2) is engaged by at least one toothed wheel (7) with a crosswise rack (9) having its sliding direction inclined in relation to the sliding direction of the longitudinal rack (2), whereas the crosswise rack (9) drives the kinetic energy rotary accumulator (13) by a transmission (12) increasing its rotation speed.
2. Impact energy converting device according to Claim 1, characterized in that the toothed wheel (7) transferring drive energy from the longitudinal rack (2) onto the crosswise rack (9) drives an additional kinetic energy rotary accumulator (19).
3. Impact energy converting device according to Claim 1 or 2, characterized in that a direction in which the crosswise rack (9) is shifted is inclined at an angle of o
90 from a direction m which the longitudinal rack (2) is shifted .
4. Impact energy converting device according to Claim 1 or 2 or 3, characterized in that the crosswise rack (9) drives the kinetic energy rotary accumulator (13) by means of a band transmission (12) .
5. Impact energy converting device according to Claim 1 - 4, characterized in that a cushioning element (20) is mounted between the longitudinal rack (2) and the ram element ( 1 ) .
6. Impact energy converting device according to Claim 1 - 5, characterized in that it comprises one longitudinal rack
(2) engaged by the toothed wheel (7) with the crosswise rack ( 9) .
7. Impact energy converting device according to Claim 1 - 5, characterized in that it comprises two parallel longitudinal racks (2) engaged by the toothed wheels (7) with two crosswise racks (9), wherein when longitudinal racks are shifted, the crosswise racks (9) are driven in the opposite directions.
PCT/PL2011/050042 2011-01-04 2011-10-24 Impact energy converting device, especially for bumpers in automotive vehicles WO2012093945A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11782487.0A EP2678190A1 (en) 2011-01-04 2011-10-24 Impact energy converting device, especially for bumpers in automotive vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PL393561A PL393561A1 (en) 2011-01-04 2011-01-04 Device for processing the crash energy, especially in the bumpers of motor vehicles
PLPL393561 2011-01-04

Publications (1)

Publication Number Publication Date
WO2012093945A1 true WO2012093945A1 (en) 2012-07-12

Family

ID=44971081

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Application Number Title Priority Date Filing Date
PCT/PL2011/050042 WO2012093945A1 (en) 2011-01-04 2011-10-24 Impact energy converting device, especially for bumpers in automotive vehicles

Country Status (3)

Country Link
EP (1) EP2678190A1 (en)
PL (1) PL393561A1 (en)
WO (1) WO2012093945A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113559528A (en) * 2021-09-26 2021-10-29 深圳市鼎峰无限电子有限公司 Remote control helicopter with anti-falling device
US11532970B2 (en) 2019-03-27 2022-12-20 Richard A. Schulman Energy conversion systems and methods

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028864A1 (en) 2002-09-24 2004-04-08 Lucjan Lagiewka Method and device for vehicle protection
WO2005121593A1 (en) 2004-06-11 2005-12-22 Georg Piontek Device for transforming kinetic energy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004028864A1 (en) 2002-09-24 2004-04-08 Lucjan Lagiewka Method and device for vehicle protection
WO2005121593A1 (en) 2004-06-11 2005-12-22 Georg Piontek Device for transforming kinetic energy

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11532970B2 (en) 2019-03-27 2022-12-20 Richard A. Schulman Energy conversion systems and methods
CN113559528A (en) * 2021-09-26 2021-10-29 深圳市鼎峰无限电子有限公司 Remote control helicopter with anti-falling device
CN113559528B (en) * 2021-09-26 2021-12-10 深圳市鼎峰无限电子有限公司 Remote control helicopter with anti-falling device

Also Published As

Publication number Publication date
PL393561A1 (en) 2012-07-16
EP2678190A1 (en) 2014-01-01

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