Pedal arrangement

Abstract

The invention relates to an accelerator pedal arrangement (1), comprising: a housing (2) with an inner wall (3); a pedal element (4) that can be moved along an actuation direction (Z) between a first position (P1) and a second position (P2); a return element (5) which forces the pedal element (4) into the first position (P1), in particular in the non-force-applied state; an elastically reversibly deformable stop damping device (6) having at least two stop elements (7a, 7b) which are spatially separated from one another, wherein a third position (P3) is provided in a starting region (A) of an actuation path (B) of the pedal element (4), located between the first position (P1) and the second position (P2), wherein, in the third position (P3), the pedal element (4) and the inner wall (3) of the housing (2) are coupled to the at least two stop elements (7a, 7b) and, in particular, rest against the at least two stop elements (7a, 7b), wherein the at least two stop elements (7a, 7b) are elastically deformed when the pedal element (4) is moved from the third position (P3) in the direction of the first position (P1).

Description

[0001] Description

[0002] title

[0003] Field of the invention

[0004] The invention relates to a pedal arrangement.

[0005] State of the art

[0006] The present invention relates to a pedal assembly. The pedal assembly is particularly suitable for use in a vehicle, for example as an accelerator pedal and / or brake pedal and / or clutch pedal.

[0007] Brake pedals, in particular, are known from the prior art. These usually comprise a spring, usually a spiral spring or helical spring or the like. This spring is compressed when the brake pedal is depressed. The design of the spring can be used to adjust the pedal characteristics experienced by a vehicle driver when depressing the brake pedal. If a brake pedal device is to be used for different vehicle types, the spring must always be adapted to the corresponding vehicle-specific specifications.

[0008] In such pedal arrangements, the pedal element is typically displaceable between a first position (e.g., initial position) and a second position (e.g., end position) along an actuation path. The pedal element is typically urged into the first position by an elastic return element (e.g., a spring).

[0009] In pedal assemblies that transmit the driver input mechanically (e.g. via a Bowden cable or a hydraulic assembly, etc.) to an associated actuator (e.g. clutch, brake, torque controller), the movement of a pedal element upon sudden release from a depressed position towards the end of the return travel can be dampened by increasing resistance of the mechanical coupling, so that the pedal element does not strike the housing, or at least strikes it somewhat slower, upon reaching the first position into which it is forced by the return element. In addition to such mechanical pedal assemblies, so-called electric or electronic pedal assemblies are known, in which the position of a pedal element of the pedal assembly is detected, for example, by means of a sensor, and a sensor signal is transmitted to an evaluation unit. The actual actuator (e.g.A clutch, a brake, or a torque controller is then actuated depending on the sensor signal. In such electric or electronic pedal assemblies, it may be necessary, to ensure high precision in determining the position of the pedal element, that the pedal element, in the non-pressed state, assumes its first position very precisely and with only a very small tolerance (e.g., less than 1 mm or even less than 0.7 mm) over the lifetime of the pedal assembly (zero position of the sensor).

[0010] DE 20 2004 004 455 U1 discloses a pedal for a vehicle in which tension spring elements are arranged between a base plate element and a pedal element. These tension spring elements are connected to the base plate element by spring retaining elements and to the pedal element by additional spring retaining elements. The pedal position is determined by a sensor.

[0011] Disclosure of the invention

[0012] The invention is based on the recognition that – particularly in electronic or electric pedal arrangements – a sudden release from the pressed position (“snap-back”) can result in a hard impact of the pedal element against the housing in or on which the pedal element is mounted. This can generate a loud noise (e.g., more than 100 dB), which can frighten an operator or be perceived as unpleasant. Furthermore, damage to the housing can occur over the lifetime of the pedal arrangement if the pedal element strikes the housing hard. Furthermore, internal simulations and tests by the applicant have shown that in the case of such a snap-back, the pedal element can briefly snap back when struck (e.g.,on an inner wall of a housing of the pedal assembly) even overshoots the first position and only after a decay time statically returns to the first position (when in the following text the first position is mentioned in connection with a stop or a coupling, then the static situation after the decay time is always meant, unless otherwise stated). This can occur in particular when the pedal element snaps back unbraked from the second position to the first position, since this is where the acceleration distance of the pedal element through the return element is the longest. It has been shown that overshooting the pedal element beyond the first position can also lead to bending of the housing in the stop area, the housing can e.g. arch, whereby depending on the design of the pedal assembly the middle of the housing is arched furthest upwards (away from the pedal element) (inverted U-shape).This, in turn, can lead to the (temporary) lateral areas of the inner wall facing the pedal element being lower than usual relative to the center of the inner wall, or even lower than the center of the inner wall (in the cover area of ​​the housing), even if the center and lateral areas would be aligned in a static case. These lateral areas of the inner wall can (temporarily) come into contact with the edges of the pedal element, meaning that (due to the upwardly curved center of the housing) a very small area (the lateral areas) of the housing must absorb and dissipate the impulse of the pedal element, which increases noise generation and places a high stress on the material.At the same time, internal simulations by the applicant have shown that the provision of particularly thick stop elements between the inner wall and the pedal element to absorb the impulse can result in the zero position of a position sensor in an electronic pedal not being reliably defined for every application, in particular if the stop element ages and its thickness therefore changes or if the stop element is removed or forgotten during assembly and the pedal element therefore rests against the inner wall itself.

[0013] There may therefore be a need to provide a pedal arrangement, in particular without a mechanical coupling to an actuator or with, for example, electrical or electronic transmission of a pedal position, in which a hard impact of the pedal element on the housing is avoided, in which the extent of noise generation is reduced and in which ideally the first position of the pedal element is achieved over its service life (e.g. with more than 10,000 sudden releases from the second position) with a very small tolerance (e.g. at most 1 mm deviation from the target position or even at most 0.7 mm deviation from the target position, preferably at most 0.5 mm deviation from the target position).

[0014] Advantages of the invention

[0015] This need can be met by the subject matter of the present invention according to the independent claim. Advantageous embodiments of the present invention are described in the dependent claims.

[0016] According to a first aspect of the invention, a pedal arrangement is proposed.

[0017] The accelerator pedal assembly comprises a housing with an inner wall, a pedal element displaceable along an actuating direction between a first position and a second position, a return element that urges the pedal element into the first position, particularly when not subjected to force, and an elastically reversibly deformable stop damping device with at least two stop elements that are spatially separated from one another. An X-direction runs transversely to the actuating direction, and a Y-direction runs transversely to the actuating direction and transversely to the X-direction. A third position is provided in an initial region of an actuating travel of the pedal element, which position is located between the first position and the second position. In the third position, both the pedal element and the inner wall of the housing are coupled to the at least two stop elements or to at least two of the stop elements.The at least two stop elements or at least two of the stop elements are elastically deformed when the pedal element is displaced from the third position towards the first position or they are elastically deformed in the first position.

[0018] The provision of the stop damping device with at least two spatially separated stop elements advantageously prevents a hard stop against the inner wall of the housing when the pedal element snaps back towards the first position and avoids damage to the housing and / or the pedal arm or the pedal element caused by such a hard stop. Furthermore, the noise generated when the pedal element stops is reduced, e.g., to a maximum of 90 dB, or preferably to a maximum of 80 dB, or particularly preferably to a maximum of 70 dB. Finally, the stop damping device can reduce the risk of the (static) first position being adjusted over its lifetime, since the high impulse of the pedal element is dissipated over a longer distance (without a stop damping device, for example, a force of more than 3000 N can be exerted by the pedal element on the inner wall).The design with at least two stop elements advantageously creates redundancy in case one of the stop elements is lost, incorrectly installed, forgotten, or becomes subject to material fatigue over time and, for example, some of its properties (e.g., its elasticity) change. The spatial separation of the stop elements advantageously allows the stop damping to be targeted at particularly critical, spaced-apart locations (e.g., on edges, corners, or borders of the housing or pedal element) without having to provide a single, one-piece stop element with large spatial dimensions (e.g., great length, e.g., in the Y direction and / or great thickness, e.g., along the actuation direction). This advantageously simplifies assembly, reduces material requirements, and reduces the risk of an inaccurate zero position due to variability in the position of the first position.Due to the possible small thickness of the stop elements, the gap between the pedal element and the inner wall of the housing can be kept small in static conditions (e.g., at most 1 mm, preferably at most 0.7 mm, particularly preferably at most 0.55 mm). This advantageously allows the zero position of a position sensor to be sufficiently close to the target position in the absence of one or more stop elements (in which case, the gap can be smaller or disappear completely) to ensure reliable operation of the accelerator pedal assembly.

[0019] In the coupled state, the pedal element on the one hand and the inner wall on the other hand can, for example, abut against the at least two stop elements or come into mechanical contact with at least two of the stop elements. The pedal element can, for example, abut against a first side of the respective stop element or be in mechanical contact, and the inner wall can, for example, abut against a second side of the respective stop element, wherein the second side faces away from the first side.

[0020] The initial range of the actuation travel can, for example, extend from the first position to the third position. The initial range can, for example, make up a very small proportion of the actuation travel. For example, the initial range in the spatial area of ​​the stop damping device can correspond to a distance of at most 1 mm or at most 0.5 mm or at most 0.3 mm or at most 0.15 mm (with a total travel in the area or radius range of the stop damping device of, for example, 5 mm to 40 mm, preferably in the range of 7 mm to 30 mm). The very small initial range or the position of the third position being very close to the first position makes it possible for the pedal element to reach the first position with a particularly small tolerance (even if one or more of the stop elements are missing or degraded) and thus - in the case of an electronic orelectric pedal arrangement - a precise zero position of the position sensor is enabled.

[0021] If more than two stop elements are provided, it is not necessary for all stop elements to couple with the pedal element and the inner wall in the third position; at least two of the stop elements can couple with the pedal element and the inner wall. For example, one stop element or several stop elements can be provided as redundant stop elements. Nevertheless, it is possible for more than two stop elements, or even all stop elements, to couple with the pedal element and the inner wall in the third position.

[0022] Furthermore, if there are more than two stop elements in the first position, it is not necessary for all stop elements to be elastically or elastically reversibly deformed in the first position; at least two of the stop elements can be elastically or elastically reversibly deformed in the first position or can be elastically or elastically reversibly deformed on the way from the third position to the first position.

[0023] The at least two stop elements can be arranged, for example, between the pedal element and the housing or the inner wall of the housing, in particular viewed along the actuation direction.

[0024] The displacement of the pedal element from the first position P1 to the second position P2, for example, preferably occurs in the XZ plane.

[0025] The pedal element can, for example, be mounted inside the housing. The pedal element can be arranged on or in the housing in such a way that it would strike an inner wall of the housing, e.g. with a pedal arm, if the impact damping device were not present.

[0026] The deformation of the stop elements when the pedal element is moved from the third position towards the first position (and up to the first position and possibly even briefly beyond the first position when the pedal element snaps back) can, for example, be elastically reversible.

[0027] A stop element can, for example, be made of a solid material (porosity does not contradict the term “solid material”) without artificially introduced cavities that are well-defined in size, position and shape.

[0028] Alternatively, a stop element can also be designed with artificially or deliberately and well-defined recesses and / or cavities in order to specifically influence the elastic or elastically reversible behavior, regardless of the selection of the material of the stop element.

[0029] The first position can, for example, represent a starting position. The second position can, for example, be an end position. The actuation path can, for example, run between the first position and the second position.

[0030] Particularly advantageously, the pedal element is not coupled to the stop damping device in the range from the second position to the third position. This advantageously ensures that when the pedal element is released, it can move quickly and without braking close to the first position, so that, for example, the element to be actuated by the pedal assembly quickly reaches a first state (e.g., a brake is quickly released). Furthermore, this advantageously enables particularly low-friction and low-force actuation of the pedal element. This enables, for example, rapid and delay-free initiation of braking, etc.

[0031] The pedal element can be coupled to the return element, for example. It can be coupled to the return element along the entire actuation path, e.g., by being in mechanical contact. This advantageously enables particularly good control of the pedal element and / or provides reliable haptic feedback for the user.

[0032] For example, exactly one reset element can be provided. However, a plurality of reset elements can also be provided. The provision of multiple reset elements can improve the safety of the pedal arrangement (redundancy). A plurality of reset elements can, for example, be designed such that they act in parallel to one another.

[0033] The at least one return element can be designed, for example, as a spring element. It can be designed, for example, as a helical spring or spiral spring. If multiple return elements are provided, then, for example, multiple spring elements can be provided that act, for example, parallel to one another. If a plurality of spring elements are provided as return elements, then the spring elements can be arranged, for example, concentrically to one another or around one another, e.g., in the form of concentrically arranged helical springs.

[0034] In this description, the terms exhibit and include are used synonymously unless otherwise indicated.

[0035] In a further development, it is provided that the stop damping device is designed such that the pedal element is spaced from the inner wall of the housing in the first position.

[0036] This advantageously ensures that the position of the first position is defined solely by the stop damping device, thus resulting in a particularly small tolerance for this position. Another advantageous feature is that friction between the pedal element and the housing or the inner wall of the housing, and thus abrasion or wear (e.g. due to vibrations), can be avoided. The development of noise (e.g. creaking) due to friction between the pedal element and the housing is also advantageously avoided. Furthermore, the position of the first position is not changed, for example by particles or dirt or the like, which can accumulate between the pedal element and the inner wall over its lifetime. In a further development, it is provided that the stop damping device is designed such that the pedal element does not strike the inner wall of the housing during an unbraked movement from the second position to the first position.

[0037] This advantageously prevents damage to the housing or the inner wall of the housing and / or the pedal element. Furthermore, it prevents loud noises caused by a hard impact. Finally, it ensures a permanently precise adjustment of the first position by the pedal element.

[0038] In a further development, it is provided that the at least two stop elements are designed as separate elements.

[0039] This advantageously makes assembly particularly simple and flexible. Furthermore, the stop elements can be easily arranged at relatively distant locations within the pedal assembly while maintaining a low tolerance, e.g., at opposite edges or corners, etc. Furthermore, the stop elements can be designed to be comparatively small. They can be used as identical parts for different housings, which advantageously saves costs.

[0040] In a further development, it is provided that at least one of the stop elements has a stop element surface that faces the pedal element, wherein the stop element surface is inclined inwards (at least in sections) when viewed parallel to the Y direction. The inclination can be designed, for example, such that an outer, in particular outermost, lateral point of the stop element surface, which is adjacent to a side wall of the housing, is spaced further from the pedal element when viewed parallel to the actuation direction than an inner, in particular innermost, lateral point of the stop element surface (the inner point can, for example, be adjacent to a (in particular centrally arranged) pedal element projection or a (in particular centrally arranged) housing projection).

[0041] This has the advantageous effect that when the pedal element snaps back, it initially couples with the stop element(s) via an inner part (viewed radially or parallel to the Y-direction). This initially keeps the load on the edges of the pedal element and also the housing low and already reduces some of the momentum of the pedal element. As the pedal element decelerates further, the housing can then (briefly) bend due to the high momentum. As a result of this bending, which progresses at the points that were initially coupled, the inclined sections of the stop element can then also come into a (virtually) parallel-surface coupling with the pedal arm or pedal element and the inner wall of the housing.In other words: the inclination of the stop element surface advantageously makes it possible to distribute the impulse of the pedal element as evenly as possible over the stop element after the initial coupling and to allow the deformation front to run as evenly as possible within the respective stop element, especially at its edges.

[0042] In a further development, the pedal element is delimited in the Y-direction by two spaced-apart edge regions or edges, wherein at least two stop elements are provided which in the third position each couple to one of the edge regions or edges.

[0043] This has the advantageous effect of preventing the edges of the pedal element from striking the inner wall of the housing. Due to the bending of the housing as described above during the pulse reduction, the housing bulges, and without stop elements with a small (edge) surface, possibly even an edge, the edges of the pedal element would no longer strike the inner wall in a parallel manner, but would strike the inner wall at a (flat) angle. Due to the then only small contact area between the edge and the inner wall, a very high surface load would occur and thus a very high force would be introduced from the pedal element into the inner wall of the housing. To prevent such a high force introduction, if a stop element is arranged outside the edge (e.g., in a central arrangement), the thickness (along the actuation direction) and / or width (along the Y-direction) of the stop element would have to be increased so significantly (e.g.,a thickness of at least 9 mm would have to be provided instead of, for example, a maximum of 7 mm or even a maximum of 6 mm in the case of at least two stop elements) and / or the stop element would have to be so soft that maintaining the precise first position would be difficult, particularly in the event of degradation of the stop element or if the stop element is missing. Thus, by covering the edge regions with the stop elements, a particularly low force introduction in the contact area with the inner wall is advantageously achieved (and thus also low noise development and a low risk of damage). In addition, a relatively small thickness of the stop elements enables and / or a small distance or gap between the inner wall and the pedal element in areas where no stop element is provided (e.g. a gap of at most 0.7 mm, preferably at most 0.55 mm).If one or all of the stop elements were to fail (e.g. fall out or their material properties deteriorate), in an extreme case the pedal element would still rest against the inner wall in the first position. In such an exceptional case the first position would still be so well defined that a position sensor would deliver a sufficiently good signal for the first position. With a different design (e.g. central arrangement and therefore greater thickness of the stop element and therefore larger gap (e.g. at least 1 mm)), in the event of the stop element being missing the first position would be considerably less precisely defined so that the position sensor would no longer be able to deliver a precise signal.

[0044] The edge or edge region can extend, for example, along the outermost 20% or along the outermost 15% of the pedal element's extension in the Y direction. The edge or edge region can, for example, have an edge at the outermost end.

[0045] In a further development, it is provided that a housing projection facing the pedal element is formed on the inner wall of the housing, which projection is arranged in the first position between at least two of the stop elements.

[0046] This advantageously ensures that in the event of failure of one or more or all of the stop elements, a fixed and well-defined stop (namely the housing projection) is available, against which the pedal element can be pushed by the return element. Such a failure of one or more stop elements can occur, for example, due to the stop element not being installed properly, due to it falling out or being removed (intentionally or unintentionally) from the installed position, due to degradation (e.g. mechanical or thermal or similar) of the stop element or stop elements, etc. This housing projection then serves as a stop for the pedal element and can at least precisely define the zero position of the position sensor. Such a case can be referred to as an emergency stop case.

[0047] For example, it can be provided that the housing projection is arranged between the stop elements when viewed along the Y direction (at least in the first position).

[0048] For example, it can be provided that the housing projection and the stop elements are arranged on a (straight) line (at least in the first position).

[0049] For example, it can be provided that the housing projection (particularly viewed along the Y-direction) is arranged approximately centrally of the pedal element and / or the housing. It can be provided, for example, that it also covers the center of the pedal element and / or the housing (in the first position). This advantageously prevents rotation of the pedal element (e.g., around its longitudinal axis) in the event of an emergency stop.

[0050] For example, it can be provided that the housing projection touches the stop elements on its sides, or a lateral gap of no more than 1 mm is formed between the housing projection and the stop elements. This advantageously enables a particularly large stop surface for the stop elements. Furthermore, the settlement of particles and / or dirt, etc., between the stop elements and the housing projection is advantageously prevented or at least made more difficult.

[0051] For example, it can be provided that the housing projection is projected beyond by the stop elements when viewed along the actuation direction. A difference in height or a height of a gap between the pedal element and the housing projection can, for example, be in the range of 0.2 mm to 0.8 mm, preferably in the range of 0.3 mm to 0.65 mm, in the (static) first position.

[0052] Alternatively or additionally, it is provided that a pedal element projection facing the inner wall of the housing is formed on the pedal element, which projection is arranged in the first position between at least two of the stop elements. This advantageously ensures that in the event of a failure of one of the stop elements, or of several or all of the stop elements, a fixed and well-defined stop (namely the pedal element projection on the inner wall) is available when the pedal element is pushed into the first position by the return element. Such a failure of one or more stop elements can occur, for example, due to a forgotten installation of the stop element, due to it falling out or being removed (intentionally or unintentionally) from the installed position, due to degradation (e.g., mechanical or thermal or the like) of the stop element(s), etc.This pedal element projection then serves as a stop for the pedal element against the inner wall of the housing and can at least precisely define the zero position of the position sensor. Such a case can be referred to as an emergency stop case.

[0053] For example, it can be provided that the pedal element projection is arranged between the stop elements when viewed along the Y direction (at least in the first position).

[0054] For example, it can be provided that the pedal element projection and the stop elements are arranged on a (straight) line (at least in the first position).

[0055] For example, it can be provided that the pedal element projection (particularly viewed along the Y-direction) is arranged approximately centrally of the pedal element and / or the housing. It can be provided, for example, that it also covers the center of the pedal element and / or the housing (in the first position). This advantageously prevents rotation of the pedal element (e.g., around its longitudinal axis) in the event of an emergency stop.

[0056] It can be provided, for example, that the pedal element projection touches the stop elements on its sides or that a lateral gap of at most 1 mm is formed between the pedal element projection and the stop elements. This advantageously enables a particularly large stop surface for the stop elements. Furthermore, the settling of particles and / or dirt, etc. between the stop elements and the pedal element projection is advantageously prevented or at least made more difficult. It can be provided, for example, that the stop elements project beyond the pedal element projection as viewed in the direction of actuation. A difference in height or a height of a gap between the pedal element and the housing projection can, for example, in the (static) first position, be in the range from 0.2 mm to 0.8 mm, preferably in the range from 0.3 mm to 0.65 mm.

[0057] In a further development, it is provided that the stop damping device is arranged on the pedal element.

[0058] This allows the impact damping device to be specifically adapted to a specific pedal element and mounted directly on it. Another advantage is that replacing or servicing the impact damping device is particularly easy.

[0059] The impact damping device can be attached to the pedal element in a force-fitting, form-fitting, or material-fitting manner. It can be latched or clipped to the pedal element, for example.

[0060] Alternatively or additionally, it is provided that the stop damping device is arranged on the inner wall of the housing.

[0061] This advantageously enables particularly secure and durable installation. The stop element device is therefore advantageously arranged on a static element (the housing). The risk of damage due to rapid acceleration (e.g. when snapping back) or due to operator action (e.g. during a cleaning procedure on the pedal element) can thus be advantageously minimized. Another advantage is that the housing offers particularly stable and good support because it is easy to increase the housing wall thickness or to provide a sufficiently large recess for a stop element in the housing body. Because the housing is a static mass, this advantageously means that operation of the pedal arrangement is not changed haptically or in terms of dynamics. The stop damping device can, for example, be attached to the inner wall in a force-fitting, form-fitting or material-fitting manner. It can, for example, be connected to the housing orbe locked or clipped to the inner wall.

[0062] In a further development, it is provided that the impact damping device comprises a material, in particular predominantly, which is selected from the group: a thermoplastic elastomer (TPE), rubber, silicone.

[0063] The use of a thermoplastic elastomer enables particularly cost-effective production and targeted adjustment of the desired mechanical (especially elastic) properties as well as the properties with regard to thermal exposure.

[0064] The use of rubber allows for particularly simple and cost-effective production.

[0065] The use of silicone enables particularly high temperature resistance.

[0066] In a further development, it is provided that the impact damping device comprises a material which has a shore value in the range of 30 to 80, preferably in the range of 40 to 70.

[0067] This advantageously results in a good damping effect upon snapping back (low noise, low risk of damage to the pedal element and / or inner wall). At the same time, this damping effect is advantageously achieved even over a short distance of elastically reversible deformation. The thickness of the damping element device or a gap in the first position between the pedal element and the inner wall can thus be kept small (e.g., a maximum of 0.75 mm or a maximum of 0.55 mm). This, in turn, ensures that in the event of a failure of the stop damping device (e.g., one or more stop elements falling out, etc.), the hard stop (pedal element with inner wall) exhibits such a small deviation from the actual first position that a position sensor can still determine an acceptable zero position. Drawings

[0068] Further features and advantages of the present invention will become apparent to those skilled in the art from the following description of exemplary embodiments, which, however, are not to be construed as limiting the invention, with reference to the accompanying drawings.

[0069] It shows

[0070] Figs. 1 a - 1 c are schematic side views of a pedal arrangement in different positions of a pedal element along an actuation path,

[0071] Fig. 2a is a first schematic perspective view of a pedal arrangement in a first position,

[0072] Fig. 2b shows the schematic perspective view of the pedal arrangement of Fig. 2a in a second position,

[0073] Fig. 3a - 3c: three schematic sectional views of a pedal arrangement in the first position (Fig. 3a), in the third position (Fig. 3b) and in the second position (Fig. 3c).

[0074] Figures 1a to 1c show schematic side views of a pedal arrangement 1 in various positions (Fig. 1a: in a first position P1 (solid line), a second position P2 (dashed line) and a third position P3 (dashed line, long dash - short dash)); Fig. 1b: in the third position; Fig. 1c: in the second position P2) of a pedal element 3 along an actuation path B.

[0075] Figures 2a and 2b show schematic perspective views of a pedal assembly in the first position (Fig. 2a) and in the second position (Fig. 2b). Figures 3a to 3c show schematic sectional views of a pedal assembly in the first position (Fig. 3a), in the third position (Fig. 3b), and in the second position (Fig. 3c).

[0076] Figures 1a to 1c, Figures 2a and 2b and Figures 3a to 3c are described together below.

[0077] Figures 1a to 1c show an accelerator pedal arrangement 1 comprising a housing 2 with an inner wall 3, a pedal element 4 which is displaceable along an actuating direction Z between a first position P1 (see Fig. 1a, solid line) and a second position P2 (see Fig. 1c), a return element 5 which urges the pedal element 4, in particular in the non-force-applied state, into the first position P1, and an elastically reversibly deformable stop damping device 6 with at least two stop elements 7a, 7b which are spatially separated from one another (in Fig. 1a only a first stop element 7a can be seen; in Figs. 2a to 3b an embodiment with two stop elements, a first stop element 7a and a second stop element 7b, can be seen). An X-direction X runs perpendicular to the actuation direction Z and a Y-direction Y runs perpendicular to the actuation direction Z and perpendicular to the X-direction X.A third position P3 is provided in an initial region A of an actuation path B of the pedal element 4, wherein the third position P3 is located between the first position P1 and the second position P2, wherein in the third position P3 the pedal element 4 on the one hand and the inner wall 3 of the housing 2 on the other hand are coupled to the at least two stop elements 7a, 7b (this is not shown in Fig. 1a for reasons of clarity, but see Fig. 1b) and in particular bear against the at least two stop elements 7a, 7b, wherein the at least two stop elements 7a, 7b are elastically deformed upon a displacement of the pedal element 4 from the third position P3 in the direction of the first position P1 or are deformed in the first position P1.

[0078] The X-direction X, the Y-direction Y and the actuation direction Z form a Cartesian coordinate system.

[0079] The displacement of the pedal element 4 from the first position P1 to the second position P2 takes place in the XZ plane. The initial range A of the actuation travel B can, for example, extend from the first position P1 to the third position P3. The initial range A can, for example, make up a very small proportion of the actuation travel B. For example, the initial range A in the area of ​​the stop damping device 6 can correspond to a distance of at most 1 mm or at most 0.5 mm or at most 0.3 mm or at most 0.15 mm (with a total travel in the area or radius range of the stop damping device 6 of, for example, 7 mm to 30 mm). The very small initial range A and the position of the third position P3 being very close to the first position P1 enable the pedal element 4 to reach the first position P1 with a particularly small tolerance and thus - in the case of an electronic orelectric pedal arrangement - a precise zero position of the position sensor is enabled.

[0080] The stop damping device 6 is designed such that the pedal element 4 is spaced apart from the inner wall 3 of the housing 2 in the first position P1 (in the static case). A gap 20 (see Figs. 3a and 3b) with a gap thickness d is formed between the pedal element 4 and the inner wall 3. The gap thickness d can (particularly in the static case of the first position P1) be, for example, in a range between 0.1 mm and 1.0 mm; preferably, it is, for example, at most 0.7 mm, particularly preferably, for example, at most 0.55 mm.

[0081] The stop element 7a, 7b can have a stop element thickness D. This stop element thickness D can, for example, be in the range of 2 mm to 10 mm, preferably in the range of 3 mm to 7 mm.

[0082] The stop damping device 6 is designed such that the pedal element 4 does not strike the inner wall 3 of the housing 2 during an unbraked movement from the second position P2 to the first position P1.

[0083] This is achieved by the (at least) two stop elements 7a, 7b. When the pedal element 4 snaps back, it first strikes the stop elements 7a, 7b. The momentum of the pedal element 4, which is transmitted to the stop elements 7a, 7b, is transferred by the stop elements 7a, 7b to the housing 2 or the inner wall 3. As a result, the housing 2 is briefly (elastically) bent or curved (in the central section, it is curved upwards, resulting, for example, in a shape similar to an inverted "U").As a result, the inner wall 3 of the housing 2 moves further away from the pedal element 4 in the middle section of the upper part of the housing 2, so that a stop of the pedal element 4 directly against the inner wall 3 in the middle area is prevented. The impulse of the pedal element 4 is thus completely dissipated in the stop elements 7a, 7b, which are arranged here on the lateral edges of the housing 2, but here, for example, extend into the middle area. When the housing 2 is bent back, there is no contact between the pedal element 4 and the inner wall 3. In this way, a loud noise is avoided and wear of the inner wall 3 and / or the pedal element 4 due to direct mechanical contact is avoided.

[0084] As can be clearly seen in Figures 2a to 3c, the at least two stop elements 7a, 7b are designed here as separate elements.

[0085] As can also be clearly seen in Figs. 2a to 3c, at least one of the stop elements 7a, 7b (in the illustrated embodiments: both stop elements 7a, 7b) has a stop element surface 8a, 8b which faces the pedal element 4, wherein the stop element surface 8a, 8b is designed to be inclined inwards in sections when viewed parallel to the Y direction Y (here: the outer section in each case). The inclination is designed in such a way that an outer lateral point 9a, 9b (in particular the outermost point) of the respective stop element surface 8a, 8b, which is adjacent to a side wall 10 of the housing 2, is spaced further from the pedal element 4 when viewed parallel to the actuation direction Z than an inner lateral point 11a, 11b (in particular the innermost point) of the respective stop element surface 8a, 8b.

[0086] During the above-described snapping back of the pedal element 4 and the brief overshoot of the pedal element 4 beyond the first position P1 (in the figures: overshoot upwards) and the warping of the housing 2, the inclination can, on the one hand, cause the inner sections of the stop elements 7a, 7b to initially couple with the pedal element 4 and the inner wall 3 and, as a result, the short-term warping is specifically built up in the center of the housing, which advantageously reduces the load on the edge regions of the housing 2.In addition, during the formation of the curvature by the inclined stop element surface 8a, 8b, this rests essentially flat against the pedal element 4 even when the housing 2 is curved, so that a uniform deformation is achieved in the respective stop element 7a, 7b and, in addition, the contact surface of the stop elements 7a, 7b with the pedal element 4 is increased, whereby the surface load on the pedal element 4 when the impulse of the pedal element 4 is reduced is advantageously reduced.

[0087] The pedal element 4 is delimited in the Y-direction Y by two spaced-apart edge regions or edges 12a, 12b (see Figs. 2a to 3c), wherein at least two stop elements 7a, 7b are provided (in the figures, by way of example, exactly two stop elements 7a, 7b), which in the third position P3 each couple to one of the edge regions or edges 12a, 12b.

[0088] During the further movement from the third position P3 to the first position P1 during snapping back, edges 53a, 53b of the edge regions or edges 12a, 12b can even couple with the stop elements 7a, 7b, particularly when snapping back from a very far pressed position of the pedal element 4. The stop elements 7a, 7b thus prevent the edges 53a, 53b from striking the inner wall 3 hard.

[0089] In Figs. 2a to 3c it can be clearly seen that a housing projection 13 facing the pedal element 4 is formed on the inner wall 3 of the housing 2, which projection is arranged in the first position P1 between at least two of the stop elements 7a, 7b (viewed in the Y direction Y).

[0090] The housing projection 13 is a part of the inner wall 3 of the housing 2, even if it were mounted as a separate element on the inner wall 3 it would be considered part of the inner wall 3 of the housing 2.

[0091] As can be seen particularly clearly in Figs. 3a to 3c, the housing projection 13 is overhung by the stop elements 7a, 7b in the direction of the pedal element 4 (so that the gap 20 is formed). However, if one of the stop elements 7a, 7b or both stop elements 7a, 7b were missing or degraded, the housing projection 13 would form a type of emergency stop against which the pedal element 4 could strike. In such a case, increased noise is to be expected when snapping back. However, the correct function of the pedal assembly 1 would still be guaranteed, since the difference between the first position P1 with stop elements 7a, 7b and a first position P1 with emergency stop (pedal element 4 would rest against the housing projection 13) is only very slight (it is determined by the gap width d).Despite this slight difference, a position sensor could deliver a sufficiently accurate signal (zero position of the position sensor) to ensure the correct functioning of the pedal assembly 1. Thus, at least emergency operation could be maintained until the stop elements 7a, 7b are repaired. The failure of one of the stop elements 7a, 7b or both stop elements 7, 7b can result, for example, from an assembly error (stop elements 7a, 7b are forgotten to be assembled or are assembled incorrectly), from the stop elements 7a, 7b falling out of the pedal assembly 1, from a degradation of the stop elements 7a, 7b (e.g. a decrease in thickness) e.g. as a result of mechanical influences (e.g. plastic deformation, abrasion, etc.) or a thermal effect (e.g. shrinkage, etc.) or as a result of aging (e.g. shrinkage, etc.).

[0092] Alternatively or additionally (not shown here), it is also conceivable for a pedal element projection to be formed on the pedal element 4, facing the inner wall 3 of the housing 2, which, in the first position P1, is arranged between at least two of the stop elements 7a, 7b. The function as an emergency stop would be analogous to that described above.

[0093] In Figs 1a to 3c it can be seen that the stop damping device 6 is arranged on the inner wall 3 of the housing 2.

[0094] For example, it can be fastened to the housing 2 or to or in the inner wall 3 in a force-fitting or form-fitting manner or by material bonding.

[0095] 3a to 3c show that, in a cover plate 27 of the housing 2, a housing recess 50 is provided for each of the two stop elements 7a, 7b, for example, with a housing undercut 51 being arranged in each housing recess 50. The stop elements 7a, 7b are mounted on the housing 2 from an interior space 24 of the housing 2. They each have a stop element locking element 52 which is inserted from the inside through the housing recess 50 and - TI - which is locked to the housing undercut 51 with a head which is mushroom-shaped here for example. In this way, the two stop elements 7a, 7b are mounted captively on the housing 2 for example.

[0096] Alternatively or additionally (not shown here), the stop damping device 6 could be arranged on the pedal element 4, in particular be fastened to the pedal element 4 in a force-fitting or form-fitting or material-fitting manner.

[0097] The stop damping device 6 (in particular the stop elements 7a, 7b) can comprise or have a material, in particular predominantly, which is selected from the group: a thermoplastic elastomer (TPE), rubber, silicone.

[0098] The stop damping device 6 (in particular the stop elements 7a, 7b) can comprise or have a material that has a shore value in the range of 30 to 80, preferably in the range of 40 to 70.

[0099] The pedal arrangement here, for example - as can be seen particularly well in Figs. 1 a to 1c - further comprises a damping element 14 which has a spring element 15. Furthermore, a fourth position, not shown here, is provided in an end region, also not shown here (e.g., at most 30% of the actuation path), which is located between the third position P3 and the second position P2, wherein the pedal element 4, viewed along the actuation path B, is coupled to the damping element 14 in the fourth position, in particular rests against the damping element 14, wherein the damping element 14 has a spring element 15 which is elastically deformed when the pedal element 4 is displaced from the fourth position towards the second position P2.

[0100] The return element 5 and the spring element 15 are arranged side by side here as an example.

[0101] The pedal element 3 has a bearing arrangement 29 around which it can be rotated between the first position P1 and the second position P2. The pedal element 3 has a bearing portion 37 and a lever portion 41 (which can also serve as a pedal arm). At its free end, the pedal element 4 has a tread plate 40.

[0102] Furthermore, the pedal element 3 has, for example, a pedal element projection 38. This pedal element projection 38 is arranged on a side of the pedal element 3 facing the damping element 14. When the pedal element 3 is displaced from the first position P1 towards the second position P2, the pedal element projection 38 couples with the damping element 5 (starting from the fourth position not shown here). Upon a further displacement of the pedal element 3 from the fourth position to the second position P2 (see Fig. 1c for the second position P2), the damping element 14 is elastically and reversibly deformed by means of the pedal element 3 (here by means of the pedal element projection 38) (here, for example, compressed by a compressive load, although in other embodiments, a tensile load or pulling apart is also conceivable (alternatively or additionally)), whereby a restoring force acting in addition to the restoring element 5 is exerted on the pedal element 3.

[0103] In a region of the actuation path B between the first position P1 and the fourth position not shown here, the damping element 14 is, for example, not coupled to the pedal element 3 or not in (direct) mechanical contact.

[0104] As a result, in the end region of the actuation travel B, the pedal element 3 is imparted with an operating characteristic that is similar to that of a mechanical pedal arrangement, in which, for example, the pedal element 3 is connected to an element to be actuated (and possibly sprung) by means of a hydraulic system, a cable, or a coupling rod. Furthermore, even in the event of sudden, violent actuation of the pedal element 3, the additional restoring force of the damping element 14 prevents the risk of a hard stop in the second position P2. Furthermore, it is possible that no increased force is required to actuate the pedal element 4 until the coupling of the pedal element 3 and the damping element 14 in the fourth position.

[0105] Figures 2a and 2b schematically show a pedal arrangement 1. The pedal arrangement 1 has a housing 2, a pedal element 4 and a return assembly 22. The pedal element 4 is movably mounted on the housing 2, for example via a bearing arrangement 29. A sensor unit 28 (which, for example, has a position sensor) can be used to detect a position of the pedal element 4 relative to the housing 2 in order to detect pedal actuation. Alternatively, instead of the sensor unit 28, a mechanical connection to the pedal element 4 can be made in order to obtain a mechanical power transmission to a system to be actuated. The sensor unit 28 can additionally have an electronic circuit by means of which sensor signals can be recorded and / or evaluated and / or stored and / or transmitted (for example to a control unit). The sensor unit 28 can, for example, have a rotation angle sensor (as a position sensor).

[0106] The pedal element 4 can be moved by means of its mounting on the housing 2 between a first position P1 (initial position or starting position) shown in Figure 2a and a second position P2 (end position or end position) shown in Figure 2b. The return assembly 22 serves to transfer the pedal element 4 into the first position P1 or to hold it in the first position P1 when no external forces act on the pedal element 4. For this purpose, the return assembly 22 has at least one elastic return element 5 and a base element 21 (it is understood that the return assembly 22 is an optional, exemplary element, in particular its base element 21; only the return element 5 is required). The base element 21 is designed to receive the elastic return element 5. The base element 21 can, for example, be an element that is at least separate from the return element 5.In particular, it can be manufactured separately from the return element 5 and not integrally with it. The return element 5 can, for example, be received, mounted, or arranged in or on the base element 21 in a loose or detachable manner and / or in a non-destructively detachable manner. In other embodiments, it can be provided that the return element 5 is arranged on the base element 21 in a non-destructively detachable but captive manner.

[0107] It is provided that the base element 21 is formed separately from the housing 2 and is mounted, in particular fastened, in or on the housing 2. The base element 21 can therefore be manufactured separately from the housing 2, wherein the base element 21 can serve, for example, as an adapter between the return element 5 and the housing 2. The return element 5 can be arranged or mounted easily, securely and in the correct place in the housing 2 by means of the base element 21. The pedal arrangement 1 can thus be adapted to different requirements easily and with little effort, since a characteristic of the pedal element 4 can be set easily and with little effort by using a suitable return element 5. The use of different return elements 5 does not require any adaptation of the housing 2 itself, since only the base element 21 needs to be adapted, if not even different return elements 5 in orcan be arranged, mounted or accommodated on one and the same base element 21. Since the housing 2 is more complex to manufacture than the base element 21, the pedal arrangement 1 is nevertheless simple and cost-effective to manufacture despite a wide range of variants. The reset assembly 22 is mounted in or on the housing 2 in such a way, in particular mounted in a non-destructively detachable manner, that actuation of the pedal element 4 in the direction of the second position P2 (end position) causes a reversible elastic deformation of the reset element 5. Due to an elastic restoring force of the reset element 5, the pedal element 4 is thus transferred to the first position P1 (starting position) when the actuation is completed or when no external force is applied to the pedal element 4.

[0108] The housing 2 has a base plate 23, side walls 26 adjoining the base plate 23, and a cover plate 27. The base plate 23, the cover plate 27, and the side walls 26 form an interior space 24 between them or enclose an interior space 24 of the housing 2. The interior space 24 is, for example, pocket-shaped here. It only has a (larger) mounting opening 25 for the pedal element 3 and the reset assembly 22 (front left in Figs. 1a, 1b) and is otherwise self-contained - the openings 32 described further below for coupling the base element 21 to the base plate 23 do not conflict with the pocket-shaped design of the housing 2, since they only have a small area (e.g., less than 10% or less than 5% of the area of ​​the base plate 7). In particular, for example, the pedal element 4 is not enclosed by a first mounting opening (e.g.,from left to right) and the reset assembly 22 through a second mounting opening (e.g. from bottom to top).

[0109] As a result, the housing 2 can be designed to be very dimensionally stable and torsionally rigid, even with a thin wall or plate thickness. This is particularly advantageous when high pedal forces are applied, e.g., when using the pedal assembly 1 as a brake pedal assembly. Actuating forces during braking can, for example, be more than 200 N, or even more than 300 N, or more than 400 N.

[0110] The mounting opening 25 is here, for example, open to the front or in a direction in which a pedal arm 39 of the pedal element 3 extends. The pedal arm 39 has, for example, a tread plate 40 at its free end. The mounting opening 25 is here, for example, open in a direction that extends transversely to a rotation axis for the pedal element 3. The rotation axis can extend, for example, transversely or perpendicularly to a mounting direction 100 (which is described further below). In the mounted state, the pedal element 4 can move within the mounting opening 25 between the first position P1 (initial position or starting position) and the second position P2 (end position). In other words: in the mounted state of the pedal element 4, the pedal element 4 protrudes, for example, at least in sections through the mounting opening 25 into an external environment of the housing 2.The reset assembly 22 is arranged here, for example (viewed along the mounting direction 100 or along the direction of the pedal arm) between the bearing of the pedal element 4 and the tread plate 40 of the pedal element 4.

[0111] The reset assembly 22 can be arranged or mounted almost entirely (e.g., more than 90%) in the interior 24 of the housing 2, in particular without parts of the reset assembly 22 protruding from the outside to the inside through one of the side walls 26 or plates 23, 27. Here, the reset assembly 22 is arranged, for example, entirely in the interior 24 of the housing 2. This makes assembly, in particular of a pre-assembled reset assembly 22, particularly easy. Furthermore, the reset assembly 22 can advantageously be inserted, pushed in, or mounted in the interior 24 of the housing 2 in a single assembly step, in particular as a pre-assembled element. The time-consuming insertion of an element into the interior 24 and the subsequent coupling of another element of the reset assembly 22 is not necessary.Furthermore, the arrangement of the reset assembly 22 in the interior 24 advantageously means that the at least one reset element 4 is particularly well protected against external mechanical influences or the like.

[0112] The pedal element 4 is mounted on the side walls 26. The pedal element 4 is mounted here, for example, in the interior space 24 of the housing 2. The pedal element 4 is arranged with a bearing section 37 between the side walls 26, the base plate 23, and the cover plate 27. The base element 21 rests, for example, on the side walls 26 and / or the base plate 23. This ensures particularly secure and reliable positioning of the base element 21 and also of the return element 5 in the housing 2.

[0113] The cover plate 27 preferably has the stop damping device 6 with, here by way of example, exactly two stop elements 7a, 7b, wherein the elastic return element 5 of the return assembly 22 presses the pedal element 4 against the stop elements 7a, 7b. This state, in which the pedal element 3 is pressed against the stop elements 7a, 7b, represents, for example, the first position P1 (initial position or starting position). By using the stop damping device 6 or the stop elements 7a, 7b, the first position P1 (initial position or starting position) can be reliably set. The stop damping device 6 or the stop elements 7a, 7b have damping properties - as already described above - in order to prevent the pedal element 4 from striking the housing 2 or its inner wall 3, e.g.when the pedal element 3 is suddenly released from the pressed state and snaps towards the first position P1.

[0114] Figures 3a to 3c show that the base plate 23 has at least one opening 32, with two such openings 32 being shown in Figs. 3a to 3c. The base element 21 has at least one base element projection 33 corresponding to the opening 32, so that two such base element projections 33 are shown in Figs. 3a to 3c. Each base element projection 33 is here, for example, positively coupled to an opening 32 by the base element projection 33 being arranged in a positively locking manner in the respective opening 32. It is understood that alternatively or additionally, the base plate 23 can also have at least one base plate projection and the base element 21 can have at least one base element opening corresponding to the base plate projection, with the base plate opening and base plate projection being positively coupled.

[0115] It is understood that the reset assembly 22 may also include the damping element 14 (not visible in Figs. 2a and 2b, but see Figs. 3a to 3c). It is understood that in other embodiments, the damping element 14 may also be arranged separately and / or spaced apart from the reset assembly 22 and / or the base element 21, in particular in or on the housing 2.

[0116] Figures 3a to 3c show that the base plate 23 has at least one base plate opening 32, with two such base plate openings 32 being shown in Figs. 3a to 3c. The base element 21 has at least one base element projection 33 corresponding to the base plate opening 32, so that two such base element projections 33 are shown in Figs. 3a to 3c. Each base element projection 33 is, for example, positively coupled to a base plate opening 32 by the base element projection 33 being arranged in a positively locking manner in the respective base plate opening 32. It is understood that, alternatively or additionally, the base plate 23 can also have at least one base plate projection and the base element 21 can have at least one base element opening corresponding to the base plate projection, with the base plate opening and base plate projection being positively coupled.

[0117] It is particularly advantageous for the pedal arrangement 1 that the area of ​​the at least one base plate opening 32 of the base plate 23, in particular the area of ​​all base plate openings 32 of the base plate 23 of the housing 2, has a proportion of a maximum of 10%, in particular a maximum of 5%, of the total area of ​​the base plate 23. In this way, the housing 2 (even with a comparatively thin wall thickness) is sufficiently stable to absorb high actuation forces, while at the same time enabling a positive-locking reception of the return assembly 22 in the housing 2 or its interior space 24.

[0118] If the base element 21 rests in a predefined position on the base plate 23, the base element projections 33 engage in the base plate openings 32, creating a positive connection. A (lateral) displacement of the base element 21 relative to the base plate 23 is not possible without lifting the base element 21 from the base plate 23. Preferably, the elastic return element 5 between the base element 21 and the pedal element 4 is pretensioned, so that an elastic return force acts even when the pedal element 4 is in the starting position (first position P1). This also causes the base element 21 to be pressed against the base plate 23, whereby the base element projections 33 also remain in the base plate openings 32, i.e. the base element 21 does not lift off the base plate 23. This ensures a secure and reliable hold of the base element 21 in the housing 2 using simple and cost-effective means.The base element 21 and thus also the return element 5 are held stationary relative to the base plate 23. At the same time, the return assembly 22 can be easily and non-destructively assembled and disassembled.

[0119] The base element 21 can, for example, have an annular groove 35 and / or a cup-shaped recess 36 in which the elastic return element 4, e.g. a compression spring or the like, and - here merely by way of example - also the damping element 14, is or can be arranged. In the illustrated embodiment, the return assembly 22 has two independent elastic return elements 5a, 5b, which are arranged so as to act parallel to one another between the base element 21 and the pedal element 3. The two return elements 5a, 5b are designed here, for example, as compression springs. A first return element 5a is arranged in an annular groove 35 and a second return element 5b is arranged in a cup-shaped recess 36. This configuration enables the return elements 5a, 5b to be guided separately in the base element 21, since the return elements 5a, 5b are not arranged in the same recess in the base element 21.Alternatively, the two return elements 5a, 5b can also be arranged in their own annular groove or in a common, i.e. the same, annular groove or in a common cup-shaped recess.

[0120] The spring element 6 of the damping element 5 is arranged here, for example, together with the second return element 4b in the cup-shaped recess 36. The spring element 6 is arranged here, for example, within the second return element 4b, in particular concentrically thereto.

[0121] The use of two reset elements 5a, 5b enables, on the one hand, a more precise adjustment of a desired characteristic of the behavior of the pedal element 4, and, on the other hand, provides redundancy in the function of resetting the pedal element 4. If one of the reset elements 5a, 5b fails, for example, due to a defect, the other reset element 5a, 5b can continue to ensure that the pedal element 4 is returned to the first position P1 (initial position or starting position) after actuation.

[0122] The pedal element 4 has, for example, a (pedal element) recess 31 (here, for example, with a stepped design in the upper part of the figures), in which the elastic return element 5 is supported, e.g., at an end facing away from the base element 21. Alternatively or additionally, a projection could also be provided to support the return element 5. In the exemplary embodiment shown in the figures, both return elements 5a, 5b are arranged in the same (pedal element) recess 31, although individual recesses can also be provided for each return element 5a, 5b (here, for example, the first return element 5a is supported on a radially outer shoulder of the (pedal element) recess 31, and the second return element 5b is supported radially inside the shoulder even higher in the (pedal element) recess 31). This results in, for example, a bell-shaped (pedal element) recess 31.The (pedal element) recess 31 prevents the return elements 5a, 5b from slipping off the pedal element 4. This ensures that actuation of the pedal element 4, i.e., displacement of the pedal element 4 toward the second position P2, always results in compression of the return elements 5a, 5b, and the return elements 5a, 5b can return the pedal element 4 to the first position P1 (initial position).

[0123] In order to avoid a hard stop of the pedal element 4 on the housing 2 and / or the return assembly 22 in the second position P2 (end position or end position), the return assembly 22 here has, for example, a damping element 14 arranged on the base element 21, although other damping options are also conceivable.

[0124] As in Figs. 1 a to 1 c and as already explained above, a fourth position (not shown here) is also provided in an end region of an actuation path B of the pedal element 3 (not shown here), which is located between the third position P3 and the second position P2, wherein the pedal element 4, viewed along the actuation path B, is coupled to the damping element 14 in the fourth position, in particular rests against the damping element 14, wherein the damping element 14 has a spring element 15 which is elastically deformed when the pedal element 4 is displaced from the fourth position in the direction of the second position P2.

[0125] In particular, it can be provided, for example, that the pedal element 4 only couples with the damping element 14 from the fourth position onwards, thus not coupling or being coupled with the damping element 14 between the first position P1 and the fourth position.

[0126] The spring element 15 can be designed here, for example, as a helical spring 16, a spiral spring, or a coil spring. In other embodiments, the spring element 15 and / or the return element can also be designed, for example, as a leaf spring or disc spring.

[0127] It can be provided, for example, that the damping element 14 is designed in such a way that it prevents a displacement of the pedal element 4 beyond the second position P2, e.g. it can be designed in such a way that it goes “to block” in the second position P2, e.g. if it is designed as a helical spring 16 or as a disc spring.

[0128] Fig. 3c shows that over-pressing of the pedal element 4 beyond the second position P2 is prevented, for example, by mechanical contact between the lower end of the edge of the bell-shaped (pedal element) recess 31 and a lateral upper end or edge of the base element 21. The two edges "lock" in the second position P2, so that the pedal element 4 cannot be displaced further downward. The return elements 5a, 5b, for example, do not "lock" here.

[0129] The spring element 15 can, for example, have a linear characteristic.

[0130] In other embodiments, the spring element 15 may, for example, have a non-linear characteristic.

[0131] The spring element 15 is preloaded here, for example. This allows a (small) (force) jump in the actuation characteristic to be achieved, which signals to the operator that they have reached the end range E of the actuation travel B.

[0132] The damping element 14 here, for example, has a guide element 17, wherein the guide element 17 has a damping element stop 18 and a guide body 19, wherein the guide body 19 has a first guide body end facing the damping element stop 18 and a second guide body end facing away from the damping element stop 18. The pedal element 4 couples to the damping element stop 18 in the fourth position, wherein the guide element 17 is designed to cause a linear movement of the damping element 14 upon a displacement of the pedal element 4 from the fourth position toward the second position P2.

[0133] The guide body 19 is designed, for example, as a rod-like or pin-like body. It can be configured, for example, as an elongated body (e.g., with an aspect ratio of at least 3:1 in terms of length and width).

[0134] The damping element stop 18 is arranged here, for example, at the first guide body end of the guide body 19 (at an end of the guide body 19 facing the pedal element 4).

[0135] The spring element 15, for example, surrounds the guide body 19 (e.g., as a spiral spring or helical spring 16 or as an evolute spring). In other words, the guide body 19 is arranged within the spring element 15.

[0136] The spring element 15 is supported here, for example, at a first spring element end on the housing 2 or on an element coupled to the housing 2, here the base element 21. At its other, second spring element end, the spring element 15 is coupled here, for example, to the damping element stop 18 or is supported thereon.

[0137] The guide element 17 can be mushroom-shaped, for example. It can be T-shaped in cross-section, for example.

[0138] The guide body 19 and the damping element stop 18 can, for example, be formed integrally with each other. They can be manufactured in the same production process, e.g., as an injection-molded part or as a stamped and bent part.

[0139] The base element 21 has a base element opening 42. The housing 2 has a housing opening 43. The guide element 17, in particular the guide body 19, projects with its second guide body end into or through the base element opening 42 and into or through the housing opening 43. When the pedal element 4 reaches the fourth position and couples with the damping element 14 (here, for example, the pedal element projection 38 comes into mechanical contact with the damping element stop 18) and when the pedal element 4 is displaced further toward the second position P2 (see Fig. 3c), the guide body 19 moves through the base element opening 42 and the housing opening 43 (if no base element 21 is provided, the guide body 19 only moves through the housing opening 43).It can be provided that the range of movement of the damping element 14 and thus of the guide body 19 is limited to a distance which corresponds at most to a thickness of the housing 2 in the region of the housing opening 43, in order to avoid a hard stop of the second guide body end with an element arranged below the housing 2 (e.g. a vehicle floor).

[0140] The pedal arrangement 1 further comprises, for example, a shaft 54, in particular a sleeve-shaped shaft, which is coupled to the housing 2, wherein the guide body 19 is received in the shaft 54 ​​and is guided by means of a shaft wall 55.

[0141] The shaft 54 ​​has a first opening at a first end and a second opening at a second end (this can be regarded or designed here as equivalent to the base element opening 42, in embodiments without the base element 21 it can be regarded or designed as equivalent to the housing opening 43, for example), wherein the guide body 19 projects through the first opening and the second opening, wherein the guide body 19 projects beyond an edge of the second opening at the second guide body end in a radial direction R transverse to an insertion direction Z of the guide body 10 into the shaft 54.

[0142] This makes it particularly easy to ensure a captive mounting of the guide element 17 on the base element 21 or directly on the housing 2. Furthermore, the spring element 15 arranged between the stop element 8 and the base element 21 (in other cases: between the damping element stop 18 and the housing 2) can be preloaded.

Claims

Claims 1. Accelerator pedal arrangement (1), comprising - a housing (2) with an inner wall (3); - a pedal element (4) displaceable along an actuating direction (Z) between a first position (P1) and a second position (P2); - a return element (5) which urges the pedal element (4), in particular in the non-forced state, into the first position (P1); - an elastically reversibly deformable stop damping device (6) with at least two stop elements (7a, 7b) which are spatially separated from one another, wherein an X-direction (X) runs transversely to the actuation direction (Z), wherein a Y-direction (Y) runs transversely to the actuation direction (Z) and transversely to the X-direction (X), wherein a third position (P3) is provided in an initial region (A) of an actuation path (B) of the pedal element (4), which third position is located between the first position (P1) and the second position (P2), wherein in the third position (P3) the pedal element (4) and the inner wall (3) of the housing (2) are coupled to the at least two stop elements (7a, 7b) and in particular bear against the at least two stop elements (7a, 7b), wherein the at least two stop elements (7a, 7b) upon a displacement of the pedal element (4) from the third position (P3) into elastically deformed in the direction of the first position (P1).

2. Accelerator pedal arrangement (1) according to the preceding claim, wherein the stop damping device (6) is designed such that the pedal element (4) is spaced apart from the inner wall (3) of the housing (2) in the first position (P1).

3. Accelerator pedal arrangement (1) according to one of the preceding claims, wherein the stop damping device (6) is designed such that the pedal element (4) in an unbraked movement from the second position (P2) in the first position (P1) does not hit the inner wall (3) of the housing (2).

4. Accelerator pedal arrangement (1) according to one of the preceding claims, wherein the at least two stop elements (7a, 7b) are designed as separate elements.

5. Accelerator pedal arrangement (1) according to one of the preceding claims, wherein at least one of the stop elements (7a, 7b) has a stop element surface (8a, 8b) which faces the pedal element (4), wherein the stop element surface (8a, 8b) is inclined inwards when viewed parallel to the Y direction (Y), in particular such that an outer lateral point (9a, 9b) of the stop element surface (8a, 8b), which is adjacent to a side wall (10) of the housing (2), is spaced further from the pedal element (4) when viewed parallel to the actuation direction (Z) than an inner lateral point (11a, 11b) of the stop element surface (8a, 8b).

6. Accelerator pedal arrangement (1) according to one of the preceding claims, wherein the pedal element (4) is delimited in the Y-direction (Y) by two spaced-apart edges (12a, 12b), wherein at least two stop elements (7a, 7b) are provided, which in the third position (P3) each couple to one of the edges (12a, 12b).

7. Accelerator pedal arrangement (1) according to the preceding claim, wherein a housing projection (13) facing the pedal element (4) is formed on the inner wall (3) of the housing (2), which is arranged between at least two of the stop elements (7a, 7b) in the first position (P1), and / or wherein a pedal element projection facing the inner wall (3) of the housing (2) is formed on the pedal element (4), which is arranged between at least two of the stop elements (7a, 7b) in the first position (P1).

8. Accelerator pedal arrangement (1) according to one of the preceding claims, wherein the stop damping device (6) is arranged on the pedal element (4), in particular non-positively or positively or materially on the Pedal element (4) is attached, and / or wherein the stop damping device (6) is attached to the inner wall (3) of the Housing (2) is arranged, in particular is fastened to the housing (2) in a force-fitting or form-fitting or material-fitting manner.

9. Accelerator pedal arrangement (1) according to one of the preceding claims, wherein the stop damping device (6) comprises a material, in particular predominantly, which is selected from the group: a thermoplastic elastomer (TPE), rubber, silicone.

10. Accelerator pedal arrangement (1) according to one of the preceding claims, wherein the stop damping device (6) comprises a material having a shore value in the range of 30 to 80, preferably in the range of 40 to 70.

Images