WO2011138225A1 - Dispositif d'immobilisation pour bloquer une partie de véhicule automobile qui peut être déplacée par rapport à une structure de véhicule automobile - Google Patents

Dispositif d'immobilisation pour bloquer une partie de véhicule automobile qui peut être déplacée par rapport à une structure de véhicule automobile Download PDF

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Publication number
WO2011138225A1
WO2011138225A1 PCT/EP2011/056748 EP2011056748W WO2011138225A1 WO 2011138225 A1 WO2011138225 A1 WO 2011138225A1 EP 2011056748 W EP2011056748 W EP 2011056748W WO 2011138225 A1 WO2011138225 A1 WO 2011138225A1
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WO
WIPO (PCT)
Prior art keywords
friction
friction element
locking device
support structure
friction surface
Prior art date
Application number
PCT/EP2011/056748
Other languages
German (de)
English (en)
Inventor
Sebastian Heinze
Matthias Fischer
Alwin Macht
Original Assignee
Brose Fahrzeugteile Gmbh & Co. Kg, Coburg
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 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg filed Critical Brose Fahrzeugteile Gmbh & Co. Kg, Coburg
Publication of WO2011138225A1 publication Critical patent/WO2011138225A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/10—Devices for preventing movement between relatively-movable hinge parts
    • E05D11/1028—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open
    • E05D11/105—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open the maintaining means acting perpendicularly to the pivot axis
    • E05D11/1057—Devices for preventing movement between relatively-movable hinge parts for maintaining the hinge in two or more positions, e.g. intermediate or fully open the maintaining means acting perpendicularly to the pivot axis specially adapted for vehicles
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05D—HINGES OR SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS
    • E05D11/00—Additional features or accessories of hinges
    • E05D11/08—Friction devices between relatively-movable hinge parts
    • E05D11/081—Friction devices between relatively-movable hinge parts with both radial and axial friction, e.g. conical friction surfaces

Definitions

  • Locking device for locking a movable with respect to a motor vehicle structure motor vehicle part
  • the invention relates to a locking device for locking a movable with respect to a motor vehicle structure motor vehicle part, which is locked by the locking device in a displacement area (continuously) in a respective achieved by displacement rest position, according to the preamble of claim 1.
  • Such a locking device comprises at least a first friction element having a first friction surface, and at least one second friction element having a second friction surface and the second friction surface for locking the motor vehicle part in contact with the first friction surface of the first friction element can be brought that the second Friction surface under static friction conditions on the first friction surface is applied.
  • the second friction element is usually adjustably mounted in the locking device, so that it is movable relative to the first friction element to allow a displacement of the motor vehicle part.
  • the second friction element is automatically brought into contact with the first friction element, for example under the influence of a spring force, under static friction conditions.
  • a generic locking device is z. B. from WO 2009/007400 A1.
  • the motor vehicle part that can be locked with such a locking device may be, for example, a motor vehicle door (side or rear door) or a closure flap (front or tailgate) of a motor vehicle, which can be folded away from a motor vehicle structure, e.g. in order to allow access to the vehicle interior in the case of a motor vehicle door or, in the case of a closure flap, to allow access to the vehicle engine or a luggage compartment.
  • a motor vehicle door side or rear door
  • a closure flap front or tailgate
  • corresponding motor vehicle part can be locked in the partially folded-down position so that it is not already folded down by a gust of wind or by unintentional contact.
  • the second friction element is mounted adjustably in the locking device relative to the first friction element.
  • This bearing takes place via a support structure of the second friction element, to which the friction element is connected (non-rotatably) to a force transmission means in order to transfer a force for releasing the frictional engagement on the second friction element during a displacement of the motor vehicle part from a rest position and second friction element to a movement to drive relative to the first friction element.
  • a power transmission means is usually a shaft with which the second friction element is rotatably connected.
  • the present invention is therefore based on the object to overcome the disadvantages mentioned above or at least reduce and to further improve a locking device of the type mentioned.
  • a contact region having at least part of the friction surface of the second friction element is elastically supported at least in sections on the support structure supporting the second friction element in the locking device, that is to say such a contact region is elastic at least in sections relative to the support structure.
  • the contact region and the support structure thereby form components of the second friction element, which is preferably designed in the form of a friction disk.
  • the friction surface of the second friction element having contact area according to the invention with respect to the associated support structure this Friction element at least partially elastic or at least partially supported elastically on the support structure.
  • such a support structure is the (comparatively rigid) component of the second friction element, via which the friction element is positioned in the locking device as intended and in particular is adjustably mounted relative to the first friction element.
  • the (non-rotatable) connection of the second friction element to a shaft of the locking device which is displaced in a displacement of the motor vehicle part and the second friction element entrains, so that the second friction element moves relative to the first friction element and (under sliding friction conditions) slides along the friction surface of the first friction element.
  • the support structure of the second friction element forms, for example, a positive engagement region via which the second friction element is positively connected to a force transmission means (eg in the form of the aforesaid shaft) for applying a force to move the second friction element relative to the first friction element into the second friction element initiate when the motor vehicle part is to be moved from its rest position.
  • a force transmission means eg in the form of the aforesaid shaft
  • a contact region of the second friction element which forms the friction surface of the second friction element, is connected to this support structure and in particular can be formed integrally with this support structure.
  • a contact region is rigidly connected to the support structure so as to preferably provide a one-piece and inherently stiff friction element to be connected to a power transmission means.
  • a contact region is at least partially movable in the direction of the support structures when the second friction element is brought with its second friction surface in abutment with the first friction surface of the first friction element or was.
  • Such a construction of the second friction element according to the invention can be used in particular in locking devices already known from the prior art, in which the first and second friction elements are braced against each other and the friction surfaces of the friction elements extend at an angle, in particular conically, to the effective direction of the bias.
  • the second friction element is spring-loaded stored in a brake housing.
  • the brake housing defines a (first) friction surface via an inner wall and thus forms a first stationary friction element of such a locking device.
  • the second friction element which is adjustably mounted on one and above a shaft, is preferably designed as a conical friction disk and mounted inside the brake housing, which forms a first friction surface with an inner wall, which also tapers conically.
  • To lock the second friction element is brought by the acting in the direction of its tapered end bias in contact with the brake housing, so that the conical friction surfaces abut each other frictionally.
  • the conical shape of the friction surfaces offers the advantage of spring force amplification, so that a reliable locking is facilitated.
  • the elastic support of the contact region with the (conical) friction surface can reduce the risk that, as a result of different thermal expansion of the two friction elements, a jamming effect occurs during a displacement of the motor vehicle part from the rest position.
  • the contact area remains in the direction of the support structure, that is radially relative to the shaft on which the second friction element is rotatably mounted, adjustable, so there is under load elastically, so that a release of the frictional engagement continues to be easily possible even with changing temperature conditions is.
  • the contact area on the second friction element is less rigid than the support structure connected to the contact area, which serves to securely support and position the second friction element in the locking device and optionally within a housing of the locking device.
  • the contact region is integrally formed (for example) on the support structure or positively connected to the support structure or integrally formed with the support structure.
  • the contact region and the support structure in one embodiment it can be provided, in particular, to form at least one recess in a section of the friction element that connects the contact region to the support structure.
  • a rigidity of this section is thereby reduced via at least one recess or a plurality of recesses and an elastic support of the contact region in the direction of the support structure is provided or supported.
  • a plurality of individual small recesses in the form of apertures or holes in a rigid material can lead to the component formed therewith becoming elastic or at least more elastic than an identical component that is made of the same material in full form.
  • the elasticity or, in other words, the elastic deformability of a component or a portion of a component can thus be achieved or improved in a targeted manner by the provision or the introduction of recesses, even if the component or the section consists only of one slightly elastic material is made.
  • POM polyoxymethylene
  • a recess or a plurality of recesses is thus formed between an elastically and / or elastically supported contact region and a stiffer, supporting support structure, such that a (elastic) deformability of a region bounding the recess is permitted or improved by the recess or recesses.
  • a section is thus formed with at least one recess so that the recess and thus the adjacent area can change in shape (eg, the area can elastically deform into the recess) to allow movement of the contact area relative to the support structure ,
  • a ribbing or rib structure can be produced by a plurality of recesses in the section of the second friction element connecting the contact region with the support structure, so that the contact region is connected to the support structure via individual narrow webs or ribs, wherein these ribs and webs are configured and arranged are that they can deform elastically and thus an elastic support of the contact area is realized.
  • the second friction element has a connecting portion, via which at least a portion of the contact region is elastically connected to the support structure.
  • the connecting portion is in particular designed such that it connects at least the one portion of the contact region elastically with the support structure.
  • the connecting portion is integrally formed with the support structure and the contact area and the contact area is formed in the elastic portion to be supported relatively thin. That is, at this section immediately adjacent to a recess of the connecting portion, so that this at least a portion of the friction surface of the second friction member having portion of the contact portion is elastically deformable into the recess.
  • Such a recess of the connecting portion is thus in front of the friction surface of the contact region in the direction of the support structure on the second friction element, so that in a frictional engagement of the second friction element on the first Friction element and when acting on the contact region or its friction surface and increased as a result of a change in temperature normal force elastic deformation of this portion of the contact portion is allowed in the recess of the connecting portion inside.
  • a defined weakening point is thus introduced into the connection formed by the connecting portion to the support structure, so that the rigidity of the connecting portion and / or the rigidity of the contact region (locally) is deliberately reduced. It is thus achieved an elastic compliance of at least a portion of the contact region on which a part of the second friction surface is formed.
  • no support of the contact region is thus realized here by a rigid connection to the (preferably central or central) support structure, in particular by a solid and rigid full form.
  • the second friction element is further made of at least two materials having different thermal expansion coefficients.
  • the second friction element expands at a temperature increase, for example, not evenly in the direction of the first friction element, whereby an undesirable jamming could be caused, but partially different due to the different materials.
  • a material with a higher coefficient of thermal expansion is used only in the regions or sections of the second friction element, in which the use of this material appears to be functionally required.
  • the contact area with the friction surface may be made of a material having a higher thermal expansion coefficient than the material from which the support structure is made.
  • the contact region with at least one part of the friction surface of the second friction element is made of a plastic in order to ensure the best possible sliding properties of the second friction element.
  • the supporting and the friction element overlapping, for example, connecting with a shaft support structure is in turn made of a stiffer material such. As steel. there Steel has up to ten times lower thermal expansion coefficient than conventional plastics, so that a larger thermal expansion can be limited to a temperature increase only to a local part of the second friction element.
  • the second friction element further comprises a plurality of individual spaced-apart segments, each forming a contact area with a portion of the friction surface.
  • a segment is provided on a segment arm of the support structure, which protrudes from a support section of the support structure in the direction of the first friction surface.
  • the second friction element is designed substantially as a friction disk composed of a plurality of individual segments, in which the individual segments are each provided on a segment arm of the support structure that is projecting radially from a central support section.
  • the storage of the second friction element and as described above z. B. the (non-rotatable) connection with a power transmission means of the locking device.
  • the support structure is formed by a metallic "insert" (here as an English term for an "insert") or a core, on whose projecting segment arms the individual segments each positively and / or non-positively connected or molded onto this.
  • each of a contact region and thus a portion of the friction surface of the second friction element defining segments preferably have a lower coefficient of thermal expansion than the material from which the supporting structure defining metallic insert or core is made.
  • an embodiment of the segments from POM is considered to be advantageous.
  • a segment in each case has at least one recess, via which an elasticity of the segment is provided or increased.
  • the contact area can thus be elastically formed or supported on a segment (so that the contact area acts on the (normal) force acting on the friction surface in the direction of the support structure - as in the case of an installation of the second Friction elements on the first friction element under static friction conditions and a temperature-induced expansion of the contact area in the direction of the (first) friction surface of the first friction element - is movable to avoid jamming of the two friction elements on this segment.
  • the formation of the segment or a connecting portion between the contact area and the support structure is such that the elastic support of the contact area shows a degressive behavior, so initially the force required for movement of the contact area in the direction of the support structure increases sharply with increasing distance, but with further increasing movement towards the support structure decreases the force increase.
  • Ideal for this is a plate spring-like design of adjacent to the contact area sections of the second friction element.
  • the greater extent of the contact area and the second friction element compared to the first friction element on the elastic support of the contact area recorded at a temperature increase be applied, even if the second friction element for locking the motor vehicle part under static friction conditions on the first friction element.
  • a caused by the temperature increase normal force increase at the friction point at which the two friction surfaces abut each other is thus determined by a in the second friction element (by suitable shaping) introduced spring characteristic and not the modulus of elasticity and the size of the second friction element.
  • FIG. 1 a perspective view of a side vehicle structure with an unfolded vehicle door; a perspective view of a rear of a motor vehicle with an unfolded flap in the form of a tailgate;
  • Figure 2 shows a first embodiment of an inventive
  • FIGS. 3A-3B show various representations of a second friction element in the form of a friction disk known from the prior art; a first embodiment of a second friction element according to the invention, in which a contact region having a part of the friction surface of the second friction element is elastically supported in sections on a support structure via a rib structure;
  • Figure 5 is a plan view of a second embodiment of a second
  • FIGS. 6A-6C show different representations of the second friction element from the figure
  • Figures 7A - 7C are various illustrations of a third embodiment of a second friction element for the locking device of Figure 2 with a support structure in the form of a metallic insert, on which individual spaced-apart segments for defining each part of the friction surface of the second friction element are arranged;
  • Figures 8A-8B show various views of an embodiment based on the embodiment of Figures 7A-7C.
  • Figures 1 A and 1 B illustrate first with respect to a motor vehicle structure displaceable or deflectable motor vehicle parts which can be locked by means of a locking device according to the invention in a partially folded position and thus in a respective rest position achieved by displacement.
  • FIG. 1A shows a detail of a lateral motor vehicle structure in the form of the body K of a motor vehicle which, together with a roof area D of the motor vehicle, defines and encloses a door opening O through which a passenger can enter the interior of the motor vehicle.
  • a hinged side door S is provided as a displaceable motor vehicle part, which is shown in Figure 1 A in a partially folded position.
  • a locking device which is shown by way of example in the embodiment of Figure 2
  • the side door S can be locked in a partially unfolded or folded position so that they are not already on by a gust of wind or unintentional touching on the part of a passer on or folded , that is, relocated.
  • This object is achieved with a generic locking device, in which a (second) friction element during a displacement of the side door S (under sliding friction conditions) relative to another (first) friction element is movable and for locking the side door S in frictional contact with this (first) Friction element can be brought.
  • locking devices of the type mentioned can be provided not only for side doors of a motor vehicle, but also for a rear door or tailgate H provided on the rear side R of a motor vehicle and serving to close a loading space L. Further possible areas of use are trunk flaps, engine flaps, sliding doors, adjustable loading floors, roller blinds and other vehicle parts that are relative to a structural assembly of the motor vehicle are displaced (deflectable). In the following, it will be generally spoken of relocatable motor vehicle parts, wherein in particular pivotable (hinged) but also displaceable motor vehicle parts are to be included.
  • FIG. 2 shows in a cross section an embodiment of a locking device according to the invention, by means of a displaceable motor vehicle part, such.
  • a displaceable motor vehicle part such.
  • the locking device comprises a housing 5 with a housing lower part 51 and a housing upper part 52 which by suitable fastening means, for. B. in the form of screws or rivets, are fastened together.
  • suitable fastening means for. B. in the form of screws or rivets, are fastened together.
  • two friction elements 1, 2 are arranged, the superimposed facing friction surfaces 10, 20 (frictionally) can be brought into engagement in order to lock by the thereby acting (static) static friction a displaceable motor vehicle part continuously in partially folded or deflected position ,
  • the first friction element 1 is formed by a portion of the inner wall of the housing 5. This section is part of the inner wall of the lower housing part 51 which is rotationally symmetrical with respect to a housing axis A and which defines or forms a friction surface 10 of the first friction element 1, which conically tapers toward the housing bottom of the housing lower part 51.
  • the first friction element 1 is fixed to the housing by its with respect to the housing axis A rotationally symmetrical, conically tapered friction surface 10 forms an immediate part of an annular circumferential inner side wall of the housing 5.
  • a housing-fixed first friction element for example, also be realized in that a separate from the inner wall of the housing 5 friction element is fixed in the interior of the housing.
  • the second friction element 2 is disc-shaped and rotatably mounted on a shaft 3, which is rotatably mounted at its two ends 31, 32 in each case an associated bearing 53 or 54 of the housing 5.
  • the axis of rotation of the shaft 3 coincides with the housing axis A.
  • the second friction element is thus attached as a separate component to the shaft 3 and stored in the housing 5 of the locking device as intended.
  • the friction element 2 forms a support structure in which a form-fitting region 25 is provided, which engages in a form-fitting region 35 of the shaft 3 in order to connect the friction element 2 in a rotationally fixed manner to the shaft 3.
  • this form-fit region 25 is a groove on a through-opening formed centrally in the friction element 2, through which the shaft 3 is partially guided.
  • a positive shaft-hub connection between the friction element 2 and the shaft 3 realized, which axial mobility of the second friction element along the housing axis A. and thus allows the axis A of the shaft 3.
  • the friction element 2 Spaced radially to the support structure with the form-fitting region 25, the friction element 2 forms one or more contact regions, which together define the conical friction surface 20 on the outer circumference of the friction element 2.
  • This conical friction surface 20 is opposite to the conical friction surface 10 of the first friction element 1 and is frictionally engageable with this.
  • an elastic element 4 in the form of a spring in order to frictionally engage the friction surfaces 10, 20 of the two friction elements 1, 2, is provided which surrounds the shaft 3 and which on the one hand on a widened end portion 32 of the shaft 3 and on the other hand on the second friction element 2 is supported.
  • the support of the elastic element 4 in this case is such that it has the tendency to brace the second friction element 2 against the first friction element 1 and thereby bring the two friction surfaces 10, 20 with each other.
  • a direction of action R the forces applied by the prestressed elastic element 4 or bias such that it extends along the shaft 3 and along the axis A and the second friction element 2 along that direction R, against the first Frictional element 1 braced.
  • the second friction element 2 Due to its axially displaceable mounting, the second friction element 2 can be tracked (automatically) under the action of the prestressing of the elastic element 4 in such a way that it can always be brought into engagement with the associated friction surface 10 of the first friction element 1. The tracking takes place automatically under the action of the bias of the elastic element 4 and taking advantage of the axial displaceability of the second friction element 2 along the shaft.
  • the material for the friction surfaces 10, 20 of the two friction elements 1, 2 is to be chosen so that the two friction surfaces 10, 20, when engaged with each other, generate a sufficiently large static stiction to partially by means of the locking device with respect to a motor vehicle structure deflected motor vehicle part in its partially deflected position.
  • the friction surface 10 made of steel and the friction surface 20 made of polyoxymethylene (POM).
  • POM polyoxymethylene
  • the sliding friction acting between the two friction surfaces 10, 20 in a relative movement should thus be significantly less, if possible by a multiple lower than the (static) static friction acting between the two friction surfaces 10, 20, when the second friction element 2 in the rest position of the motor vehicle part is braced by the elastic element 4 against the first friction element 1.
  • This is achieved, on the one hand, by the abovementioned or an alternative combination of materials for the friction surfaces 10, 20 (cf., in particular, WO 2009/007400 A1) and, on the other hand, by an optionally used (flowable) intermediate medium Z, during a movement of the second friction element 2 relative to the first friction element 1 between the mutually facing friction surfaces 10, 20 of the two friction elements 1, 2 is to bring and reduces the frictional forces acting.
  • Such an intermediate medium Z in the form of a lubricant is presently provided in the lower housing part 51, specifically with a filling height such that it reaches at least as far as the underside of the second friction element 2 facing the housing bottom.
  • the angled to the direction of action R of the bias extending friction surfaces 10, 20 offers the advantage of a spring force, so that a secure locking of the movable motor vehicle part is ensured by the locking device. But just at this angled, conical here, the course of the friction surfaces and the previously mentioned combination of different materials for the two friction surfaces 10, 20 but at different thermal expansion of the two friction elements 1, 2, a Verklemm bin occur upon first actuation after temperature rearrangement. Thus, it may happen in particular that the (operating) temperature within the housing 5 increases during the locking and thus when the two friction elements 1, 2 under static friction conditions. As a result, in particular, the friction elements 1, 2 expand.
  • the lower housing part 5 and thus the inner wall of the steel defined the friction element 1 and the second friction element 2 is made entirely of a plastic.
  • the friction element 2 With an increase in temperature, the friction element 2 thus expands more strongly and presses more strongly in the radial direction onto the friction element 1, as a result of which the frictionally engaged frictional connection could be undesirably (locally) reinforced.
  • FIGS. 3A and 3B Prior art embodiments of second friction elements 2 * for a locking device of FIG. 2 are shown in FIGS. 3A and 3B to illustrate the problem of jamming associated with thermal expansion.
  • FIG. 3A is a sectional top view of a locking device with a first, fixed friction element 1 * and a second friction element 2 * that can be moved relative thereto and thus be brought into frictional engagement.
  • FIG. 3B shows a second friction element 2 * as a single component in a plan view, differences of an alternative embodiment of the friction surface 20 'of the second friction element 2 * and of a different dimensioning of the second friction element 2 * being owed to the illustration of FIG however, to change the basic operation.
  • the friction element 2 * of Figure 3A is analogous to the friction element 2 of Figure 2 (and analogous to the friction elements shown in Figures 4 to 8B) substantially disc-shaped and mounted within a housing, on whose inner wall a friction element 2 * surrounding, flat Friction surface 10 * is formed. It is thus again defined a fixed, fixed to the housing first friction element 1 * , on which the second friction element 2 * can abut frictionally.
  • the friction surface 20 * of the second friction element 2 * is crowned so that the friction element 2 * can only be brought into engagement with the friction surface 10 * of the associated first friction element 1 * via part of its circumferential friction surface 20 * .
  • curved contact areas 21 1, each defining a part of the (total) friction surface 20 * are thus indented intermediate regions 212 on the peripheral side of the second friction element 2 * educated.
  • intermediate regions 212 lie opposite the first friction surface 10 * when the second friction element 2 * abuts on the first friction element 1 * at a distance, so that a cavity in the form of an intake region EB is formed between two contact regions 21 1 engaged with the friction surface 10 * is.
  • the intermediate medium Z can move between the friction surfaces 10 * and 20 * of the two friction elements 1 * , 2 * relative to the first friction element 1 * when the second friction element 2 * moves, thereby correspondingly reducing the sliding friction.
  • the second friction element 2 * is formed in one piece, so that a support structure 22 of the second friction element 2 * , on which the positive engagement region 25 for supporting the second friction element 2 * is formed, together with the other components of the second friction element 2 * , in particular the contact regions 21st 1 and the intermediate regions 212.
  • a reinforcing, rigid connection section 23 * is in the form of a single Ridge or a single web provided, which extends like a spoke straight and radially to the axis A of the shaft 3, starting from the support structure 22 in each case to a contact region 21 1.
  • a contact region 21 1 is rigidly supported on the central or central support structure 22 via the individual rib of a connection section 23 * , so that a on the part of the friction surface 20 * of the contact portion 21 1 introduced normal force F N is introduced via the single rib of the connecting portion 23 * directly into the support structure 22.
  • the thickness or thickness d of the single rib of the connecting portion 23 * is always chosen so that the contact portion 21 1 each as stiff as possible with the support structure 22, where the bearing on the shaft 3, connected and supported on this.
  • FIG. 3B This basic principle can also be seen from the exemplary embodiment of FIG. 3B, in which a plurality of individual ribs or struts, such as spokes, run from a central, substantially circular support section 220 of a support structure 212 to the peripherally formed contact regions 212 * , in each case via a contact region 212 * single rib in a connecting portion 23 * as stiff as possible to connect to the support portion 220.
  • the individual contact regions 212 * on which the friction element 2 * can abut frictionally on the first friction element 1 * , are separated from one another by smaller intermediate regions 21 1 * .
  • the intermediate regions 21 1 * in the form of small pockets or depressions in the conical peripheral surface of the second friction element 2 * are formed, so that the friction surface 20 * over this into several (present 5) individual sections is divided and the second friction element 2 * to the Intermediate areas 212 * can not abut the friction surface 10 * of the first friction element 1 * .
  • a contact region 21 1 of the movable, second friction element 2 is elastically supported, at least in sections, on the support structure 22 of the friction element 2, via which the second friction element 2 is mounted in a locking device.
  • a contact region 21 1 of the second friction element 2 which has at least a portion of the friction surface 20 to be engaged with the friction surface 10 of the first friction element 1
  • the individual (in FIG. 4 six) contact regions 21 1 of the friction element 2 are each crowned, so that they each represent, for example, a circular segment whose radius is smaller than a radius of a circular path along which the two contact regions are arranged one behind the other along the circumference are.
  • Each contact area 21 1 thus has a central contact portion 21 1 a, which is flanked on both sides in the circumferential direction by an edge portion 21 1 b and on which the part of the friction surface 20 is formed, on which a frictional contact with the friction surface 10 of first friction elements 1 is produced. While the edge portions 21 1 b are supported by the two force introduction ribs 23.2a and 23.2b substantially radially and thus substantially perpendicular to the friction surface 20, adjacent to the contact portion 21 1 a in the direction of the support structure 22 directly to the recess 6.
  • the thin-walled contact section 21 1 a can deform at least slightly elastically into the recess 6 in order to absorb a temperature-induced expansion of the friction element 2 and prevent a plane perpendicular to the friction surface 20 from contacting the contact region 21 1 or the contact section 21 1 a Normal force F N leads to jamming.
  • the illustrated geometry of the connecting portion 23 thus reduces the rigidity of the contact region 21 1 or its support on the abutment portion 21 1 a, so that in this case an elastic deformation with a temperature increase is specifically permitted.
  • the recess 6 serves to introduce a defined weakening point in the connecting region 21 connecting the contact region 21 1 to the support structure 22 in order to at least locally reduce the rigidity of the second friction element 2.
  • the Y-shaped rib structure of the connecting portion 23 is further shown enlarged in the sectional view of Figure A, which results from the section line AA.
  • the recess 6 is formed as an opening, so that the connecting portion 23 is hollow in the region of the recess 6.
  • the contact section 21 1 a forming an inner surface 60 of the opening can yield elastically in the direction of an opposite inner surface 61 of the opening or the recess 6 in order to avoid jamming of the two friction elements 1, 2.
  • an elastic, resilient support of the contact section 21 1 a of the contact region 21 1 is selectively provided without having to provide separate elastic elements on the second friction element 2 (further to the elastic element 4).
  • the second friction element 2 may further integrally with the support structure 22, the plurality of connecting portions 23 and the friction surface 20 forming contact areas 21 1 z. B. be formed from a plastic material.
  • FIG. 5 illustrates a further exemplary embodiment of a second friction element 2 'in plan view, which can be used instead of the second friction element 2 of FIG. 2 in a locking device according to the invention and which is shown in further views in FIGS. 6A to 6C.
  • the disk-shaped friction element 2 'again has an inner support structure 22 on which the form-fit region 25 is formed centrally and which is surrounded by a circular support section 220 here.
  • a contact region 21 1 ' forms in each case a part of the peripherally extending friction surface 20 of the friction element 2', via which the friction element 2 'can be brought into engagement with the housing-fixed, first friction element 1, around a motor vehicle part (see FIG and 1 B) to lock in a rest position.
  • the contact regions 21 1 'and the intermediate regions 212' are formed in such a way that the contact regions 21 1 'protrude at least slightly further in the radial direction in the direction of the first friction element 1, so that the second friction element 2' extends exclusively over the contact regions 21 1 'and the friction surface 20 formed by them in engagement with the friction element 1 can be brought.
  • the individual contact regions 21 1 ' are slightly more convex than the intermediate regions 212'.
  • the intermediate regions 212 ' are thus located opposite the contact regions 21 1' slightly in the direction of the support structure 22 on the friction element 2 'and are slightly flattened, so that between the intermediate regions 212' and the friction surface 10 of the first friction element 1 respectively a catchment area EB is formed for the penetration of intermediate medium Z.
  • the elastic support of each of the part of the Bacreib simulation 20 having contact portions 21 1 'on the rigid support structure 22 is realized in this embodiment via a specific embodiment of a rib structure in the connecting portion 23'.
  • the connecting section 23 ' has two force introduction ribs 23.2a' and 23.2b 'running essentially radially from a contact region 21 1' in the direction of the support structure 2.
  • These two force introduction ribs 23.2a 'and 23.2b' are spaced from each other by a recess 6 here in the form of a substantially radially extending, narrow oblong hole.
  • These two force introduction ribs 23.2a ', 23b' open into an integrally formed with them and extending transversely to them base rib 23.1 '.
  • the base rib 23.1 ' is in turn only connected to two spaced-apart webs 231 and 232 with the support portion 220 of the support structure 22.
  • the two webs 231 and 232 are spaced apart from one another by a further recess 7, which is essentially in the form of a further narrow elongated hole transverse to the extension direction of the recess 6 and the mutually parallel force introduction ribs 23.2a ', 23.2b' and substantially along a circular path the axis A of the shaft 3 extends when the second friction element 2 'is installed as intended in the locking device.
  • a gap formed by the recess 7 gap to the support portion 220 which is bridged only by the two spaced apart webs 231 and 232.
  • a length ⁇ 7 of the recess 7 along a circular path is selected such that the recess 7 extends completely along the section of the base rib 23.1 'along which the two force introduction ribs 23.2a' and 23.2b 'open into the base rib 23.1'.
  • the recess 7 is thus in the extension direction of the two force introduction ribs 23.2a ', 23.2b' on the support structure 22 and the support portion 220 and extends - from the contact portion 21 1 'from - behind the base rib 23.1'.
  • a defined weakening point in the connection between a contact region 21 1 'and the support portion 220 is introduced through the recess 7 in order to at least locally reduce the rigidity of the friction element 2' and the contact area 21 'elastically to the stiffer Support structure 22 support.
  • the base rib 23.1 ' can at least slightly bend at a normal force acting on it via the force introduction ribs 23.2a' and 23.2b 'in the direction of the support structure 22 and thus be elastically deformed into the recess 7 when the contact region 21 1' with its supported by the force introduction ribs 23.2a ', 23.2b' abutment portion 21 1 a 'due to an elevated temperature in the direction of the friction surface 10 of the first friction element 1 expands. At least the abutment portion 21 1 a 'of the contact portion 21 1 can thus move in the direction of the support structure 22 to compensate for a temperature-induced expansion and to avoid a temperature-induced increase in the frictional force.
  • connecting portions 23 'thus By the stiffness of the connecting portions 23 'thus selectively reduced and the individual connecting portions 23', respectively adjacent pairs of force introduction ribs 23.2a ', 23.2b', further separated by larger cavities, in which the rigid connecting portions 24 a radial connection between the Providing intermediate regions 212 'and the support section 220, a friction ball of the friction element 2' defined by a contact region 21 1 'is thus elastic with respect to the stiffer support structure 22.
  • a spring characteristic of the connecting portion 23 ' is determined in particular by its geometry and the size of the recesses 6 and 7 (individually).
  • the recesses 6 and 7 extend with substantially identical lengths l 6 and l 7 within the connecting portion 23 ', wherein a length l 6 or I 7 only a fraction of the circumference of the disc-shaped friction element 2' makes.
  • fastening webs 26 that are still substantially perpendicular to the support section 220 can also be seen. These can be used in the present case for fastening the elastic element 4 to the second friction element 2 '.
  • a second friction element 2 " is produced from two different materials with mutually different coefficients of thermal expansion, wherein a support structure 8 or 8 * consists of a metallic material, in particular the friction surface 20 of the second friction element 2 "is made of a plastic material which has a larger thermal expansion coefficient relative to the material of the support structure 8, 8 * .
  • the support section 8.2 has, analogously to the support section 220 of the preceding figures, a form-fit region 8.5, by means of which the second friction element 2 "of FIGS. 7A to 7C is to be fastened to the shaft 3 of FIG. 2 instead of the second friction element 2, around the second friction element 2 "in the locking device intended to store axially displaceable.
  • the (five) segment arms 8.1 are arranged radially and in a star-shaped projecting manner.
  • a segment 2.1 is arranged in each case from a plastic material, which is fixed in a form-fitting manner to the associated segment arm 8.1.
  • a segment 2.1 may have been designed as a prefabricated component and subsequently attached to the segment arm 8.1 assigned to it, or a segment 2.1 has been injection-molded onto a segment arm 8.1 (for example by an injection molding process).
  • a respective segment 2.1 is firmly connected to a segment arm 8.1 in the region of an end section 8.3 of the respective associated segment arm 8.1, which is spaced from the support section 8.2.
  • Each of a conically tapered friction surface and a portion of the friction surface 20 at a contact portion 21 .0 forming segments 2.1 each have a base in the form of a circular segment.
  • the individual segments 2.1 are Furthermore, each spaced apart in the circumferential direction, so that between them a gap with the width g is formed as a segment distance, on the relative to the first friction member 1 during a relative movement of the second friction element 2 ** the intermediate medium Z to improve the sliding friction between the friction surfaces 10th , 20 can get.
  • peripheral contact areas 21 .0 of the individual (spherical) segments 2.1 extend with the part of the friction surface 20 which can be brought into engagement with the friction surface 10 of the friction element 1, along a circular path whose radius is smaller than the radius of the circular path , along which the individual segments 2.1 are arranged one behind the other on the second friction element 2 ** .
  • the crowned or domed segments 2.1 lie against the friction surface 10 of the first friction element 1 only with a part of the contact region 21 .0, so that in the region of the gap between two adjacent segments 2.1 a retraction region EB is again defined, in which the second friction element 2 "along its circumference can not rest against the first friction element 1 (cf., in particular, FIG. 8B with an analogous design of the segments 2.1).
  • a plurality of recesses 9.0, 9.1 are provided in analogy to the preceding embodiments in the individual segments 2.1, over which the rigidity of a segment 2.1 compared to a trained as a full-form segment especially at the portion of the contact portion 21 .0 is significantly reduced, at which the segment 2.1 can be brought into engagement with the friction surface 10 of the first friction element 1.
  • a central recess 9.0 is provided, which adjoins in the extension direction of a segment arm 8.1 and is formed in the segment 2.1.
  • This central recess 9.0 is made in the form of a wedge-shaped depression in the segment 2.1.
  • the recess 9.0 allows it Contact area 21 .0 to deform elastically in the direction of the support structure 8 when a segment 2.1 (due to a rise in temperature) to a greater extent (as in normal operation) is pressed against the friction surface 10 of the first friction element 1.
  • the additional lateral recesses 9.1 in the form of openings or cavities provided adjacent to this central recess 9.0 additionally reduce the rigidity of the segment 2.1 and thus support the ability of a segment 2.1 to increase in the direction of the axis A or (radially) in temperature
  • Direction of the support structure 8 can be elastically deformed at least to some extent normal force to compensate for a greater extent of a segment 2.1.
  • the (four) lateral recesses 9.1 are in the form of a chamber and in pairs in a segment 2.1 adjacent to the associated segment arm 8.1 such that the end section 8.3 of a segment arm 8.1 each between two pairs of successively arranged in the radial direction lateral recesses 9.1 in the segment 2.1 extends into it.
  • FIGS. 8A and 8B show a slightly modified variant of the embodiment of FIGS. 7A to 7C, in which a support structure 8 * is likewise formed by a metallic insert.
  • Figures 8A and 8B further show an alternative embodiment of the segments 2.1, in each of which a segment 2.1 by two circumferentially opposite lateral (larger) recesses 9.1 is elastic.
  • the two recesses 9.1 of a segment 2.1 lie on different sides of the associated segment arm 8.1 transverse to the extension direction of the segment arm 8.1 side by side, so that the end section 8.3 * of the segment arm 8.1 * extends between them.
  • the portion of the contact region 21 .0 to be brought into contact with the friction surface 10 of the first friction element 1 always lies with a width between the end of the associated segment arm 8.1 or 8.1 * is many times smaller than the length of the segment arm 8.1 or 8.1 * .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Operated Clutches (AREA)

Abstract

L'invention concerne un dispositif d'immobilisation pour bloquer une partie de véhicule automobile (H, S) qui peut être déplacée par rapport à une structure de véhicule automobile (K), laquelle peut être bloquée dans une zone de déplacement au moyen du dispositif d'immobilisation dans une position de repos à chaque fois atteinte par déplacement, comprenant - au moins un premier élément de friction (1) du dispositif d'immobilisation, lequel présente une première surface de friction (10), et - au moins un deuxième élément de friction (2, 2', 2'') du dispositif d'immobilisation, lequel présente une deuxième surface de friction (20) et dont la deuxième surface de friction (20), en vue de bloquer la partie de véhicule automobile (H, S), peut être amenée en contact avec la première surface de friction (10) du premier élément de friction (1) de telle sorte que la deuxième surface de friction (20) repose contre la première surface de friction (10) sous des conditions de friction par adhérence. Selon l'invention, le deuxième élément de friction (2, 2', 2'') comprend une structure support (22, 8, 8*) par le biais de laquelle le deuxième élément de friction (2, 2', 2'') est supporté dans le dispositif d'immobilisation, ainsi qu'au moins une zone de contact (211, 211', 21.0) reliée avec la structure support (22, 8, 8*), laquelle présente au moins une partie de la deuxième surface de friction (20). Conformément à l'invention, la zone de contact (211, 211', 21.0) qui présente ladite partie de la deuxième surface de friction (20) est soutenue de manière souple au moins dans certaines portions sur la structure support (22, 8, 8*) qui supporte le deuxième élément de friction (2, 2', 2'') dans le dispositif d'immobilisation. La zone de contact (211, 211', 21.0) peut ainsi être déplacée au moins dans certaines portions en direction de la structure support (22, 8, 8*) lorsque le deuxième élément de friction (2, 2', 2'') est amené avec sa deuxième surface de friction (20) en appui contre la première surface de friction du premier élément de friction (1), c'est-à-dire lorsque la deuxième surface de friction (20) repose contre la première surface de friction (10) sous des conditions de friction par adhérence.
PCT/EP2011/056748 2010-05-03 2011-04-28 Dispositif d'immobilisation pour bloquer une partie de véhicule automobile qui peut être déplacée par rapport à une structure de véhicule automobile WO2011138225A1 (fr)

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DE102010028513A DE102010028513A1 (de) 2010-05-03 2010-05-03 Feststellvorrichtung zum Arretieren eines bezüglich einer Kraftfahrzeugstruktur verlagerbaren Kraftfahrzeugteils
DE102010028513.7 2010-05-03

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2660008A1 (fr) * 1990-03-21 1991-09-27 Pezin Jacques Dispositif d'arret de porte integre a l'interieur d'une charniere.
US5109572A (en) * 1989-09-23 1992-05-05 Hyundai Electronics Ind. Co., Ltd. Locking hinge device for the LCD screen of a word processor
US5600870A (en) * 1996-03-07 1997-02-11 Op-D-Op, Inc. Articulating hinge assembly
CA2312108A1 (fr) * 2000-06-21 2001-12-21 Multimatic Inc. Appui de porte de vehicule pour charniere de vehicule a goupilles fendues
DE20305291U1 (de) * 2003-04-01 2003-06-18 Dr. Schneider Engineering GmbH, 96317 Kronach Schwenklager für eine Klappe, insbesondere für die Klappe vor einem Tankverschluss in einem Kraftfahrzeug
GB2433770A (en) * 2005-12-29 2007-07-04 Thales Holdings Uk Plc Hinge with clamped pin coated with hardness imparting component
WO2008069071A1 (fr) * 2006-12-01 2008-06-12 Rikenkaki Kogyo Kabushiki Kaisha Dispositif de charnière de portière de véhicule avec dispositif de retenue
WO2009007400A1 (fr) 2007-07-10 2009-01-15 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Dispositif de fixation d'un véhicule automobile pour bloquer une pièce de véhicule automobile déplaçable

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5109572A (en) * 1989-09-23 1992-05-05 Hyundai Electronics Ind. Co., Ltd. Locking hinge device for the LCD screen of a word processor
FR2660008A1 (fr) * 1990-03-21 1991-09-27 Pezin Jacques Dispositif d'arret de porte integre a l'interieur d'une charniere.
US5600870A (en) * 1996-03-07 1997-02-11 Op-D-Op, Inc. Articulating hinge assembly
CA2312108A1 (fr) * 2000-06-21 2001-12-21 Multimatic Inc. Appui de porte de vehicule pour charniere de vehicule a goupilles fendues
DE20305291U1 (de) * 2003-04-01 2003-06-18 Dr. Schneider Engineering GmbH, 96317 Kronach Schwenklager für eine Klappe, insbesondere für die Klappe vor einem Tankverschluss in einem Kraftfahrzeug
GB2433770A (en) * 2005-12-29 2007-07-04 Thales Holdings Uk Plc Hinge with clamped pin coated with hardness imparting component
WO2008069071A1 (fr) * 2006-12-01 2008-06-12 Rikenkaki Kogyo Kabushiki Kaisha Dispositif de charnière de portière de véhicule avec dispositif de retenue
WO2009007400A1 (fr) 2007-07-10 2009-01-15 Brose Fahrzeugteile Gmbh & Co. Kg, Coburg Dispositif de fixation d'un véhicule automobile pour bloquer une pièce de véhicule automobile déplaçable

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