WO2023280953A1 - Attelage de remorque doté d'un moyen de compensation de pression - Google Patents

Attelage de remorque doté d'un moyen de compensation de pression Download PDF

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Publication number
WO2023280953A1
WO2023280953A1 PCT/EP2022/068806 EP2022068806W WO2023280953A1 WO 2023280953 A1 WO2023280953 A1 WO 2023280953A1 EP 2022068806 W EP2022068806 W EP 2022068806W WO 2023280953 A1 WO2023280953 A1 WO 2023280953A1
Authority
WO
WIPO (PCT)
Prior art keywords
volume
coupling arm
fixing
coupling
arm
Prior art date
Application number
PCT/EP2022/068806
Other languages
German (de)
English (en)
Inventor
Jens Kruse
Jürgen Peitz
Hendrik Graute
Arne Kuhlen
Original Assignee
Westfalia-Automotive Gmbh
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 Westfalia-Automotive Gmbh filed Critical Westfalia-Automotive Gmbh
Priority to DE112022002555.7T priority Critical patent/DE112022002555A5/de
Priority to EP22740870.5A priority patent/EP4351895A1/fr
Publication of WO2023280953A1 publication Critical patent/WO2023280953A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/48—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting
    • B60D1/54—Traction couplings; Hitches; Draw-gear; Towing devices characterised by the mounting collapsible or retractable when not in use, e.g. hide-away hitches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60D—VEHICLE CONNECTIONS
    • B60D1/00—Traction couplings; Hitches; Draw-gear; Towing devices
    • B60D1/01—Traction couplings or hitches characterised by their type
    • B60D1/06—Ball-and-socket hitches, e.g. constructional details, auxiliary devices, their arrangement on the vehicle

Definitions

  • the invention relates to a trailer coupling for a motor vehicle, with a coupling arm for coupling a trailer or a rear load carrier, with a vehicle mount that can be attached or attached to the motor vehicle and has a bearing base on which a coupling arm carrier, on which the coupling arm or a receiving body for detachable receptacle of the coupling arm is arranged pivotably about at least one pivot axis between a use position provided for attaching the trailer or the rear load carrier and a non-use position provided for not using the trailer hitch, the trailer hitch having a fixing device for stationary fixing of the coupling arm in the use position and / or the non-use position with respect to the bearing base, wherein the coupling arm in a release position of the fixing device with respect to the Lagerba sis between the use position and the non-use position movable u nd a fixing position of the fixing device is fixed in place with respect to the bearing base.
  • Such a trailer hitch is known from DE 102020 131 748 A1.
  • the trailer hitch has positive-locking elements arranged on the coupling arm carrier and the coupling holder, which are arranged in a closed volume. In this context, sealing problems can arise.
  • a trailer coupling of the type mentioned at the outset provides for the coupling arm carrier to be arranged on a coupling arm side of a supporting body of the vehicle holder and, in particular parallel to the pivot axis and/or linearly, to be movably mounted towards and away from the supporting body in order to engage or disengage positive-locking elements of the fixing device arranged in particular on the support body and the coupling arm support, with a volume on the coupling arm side being enclosed between the coupling arm support and the support body, which volume is enlarged by the movement of the coupling arm support away from the support body and by the Movement of the Kupplungarmisme is reduced to the support body out, wherein on the support body, a pressure equalizing means, in particular a special passage opening, is arranged through the air into the volume into the clutch arm and / or out of the volume on the clutch arm side str can omen.
  • the pressure compensation means for example a passage opening, ensures that air flows from the volume on the clutch arm side, for example into the area surrounding the trailer hitch or, as will become even clearer below, into a second volume, which is advantageously larger, in particular significantly larger, than the volume on the clutch arm side volume is.
  • the second volume is preferably a closed or chambered volume. At the second volume but can also Druckaus equalizing means, such as a membrane or the like, be provided, which allow pressure equalization to an environment of the trailer hitch.
  • the clutch arm support forms, for example, a pump element or a pump body.
  • the coupling arm carrier pumps air, for example, from the volume on the hitch arm side through the pressure compensation means into the surrounding area of the trailer hitch or into the aforementioned second volume.
  • the support body is, for example, a flange body or a plate body.
  • the pressure-equalizing means has, for example, one or more bores that pass through the support body, for example the flange body or plate body. Certain leaks are also at least conceivable or possible in the case of the trailer hitch with pressure compensation means. However, it is preferable for air to flow towards and/or away from the supporting body during the adjustment of the coupling arm carrier to the supporting body exclusively or at least 95% through the pressure compensation medium into and/or out of the volume on the coupling arm.
  • the support body has a sealing surface covered by the clutch arm support when the clutch arm support is displaced toward the support body, the sealing surface forming part of surfaces enclosing the clutch arm-side volume.
  • the volume is limited by other components, such as the clutch arm carrier.
  • passage openings for air arranged on the supporting body serve exclusively as the pressure equalizing means or form part of the pressure equalizing means. If there are openings, they serve to equalize the pressure.
  • the form-fitting elements could include a form-fitting receptacle on the support body, on which a through-opening for the pressure-equalizing means is arranged.
  • the form-fit receptacle can be designed as a cylindrical bore for a cylindrical form-fitting body as another form-fitting element.
  • the hole has no bottom, but is designed as a passage opening.
  • the form-fitting elements include form-fitting receptacles on the support body, which have a bottom have or have no passage opening for providing the pressure equalization means.
  • the bearing base comprises a pivot bearing arranged on the supporting body or is formed by it.
  • the pivot bearing is advantageously arranged in a sealing manner on the supporting body and/or is provided with a pivot bearing seal, so that the pivot bearing is sealed against air flowing through into the volume on the coupling arm or out of the volume on the coupling arm.
  • the pivot bearing ger seal is arranged, for example, on an outer circumference of the pivot bearing.
  • the pivot bearing seal includes, for example, an elastic seal, in particular an O-ring.
  • the pressure compensation means is advantageously arranged away from a bearing mount of the supporting body or the coupling arm carrier.
  • seals can be provided, for example the pivot bearing seal around the pivot bearing.
  • the volume on the coupling arm is enclosed by a particularly elastic seal between the supporting body and the coupling arm support at least when the coupling arm support is adjusted towards the supporting body, with the seal sealing the volume on the coupling arm radially outwards with respect to the pivot axis.
  • the seal is disposed on an outer periphery of the clutch arm support or engages the outer periphery of the clutch arm support when it is moved toward the support body of the vehicle mount.
  • the seal includes, for example, an O-ring and/or a sealing lip or the like. This seal can also be referred to as a peripheral seal.
  • the clutch arm side volume may be open in some situations, for example when the clutch arm support is moved far enough away from the support body. For example, in the release position when the form-locking element ments are disengaged, the seal no longer encloses the volume on the clutch arm side, so that air from the environment can flow into the area of the positive locking elements or the former volume on the clutch arm side.
  • the volume on the clutch arm side it is also possible for the volume on the clutch arm side to be permanently enclosed, so to speak.
  • the volume on the coupling arm side between the supporting body and the coupling arm support is also enclosed by the seal when the coupling arm support is moved away from the supporting body.
  • An advantageous concept provides that the pressure compensation means is provided and configured so that air flows exclusively or essentially through the pressure compensation means and not past the seal into the volume on the clutch arm side or flows out of the volume on the clutch arm side and/or that the pressure compensation means is then provided for the flow of air into the kupplungsarmtime volume or out of the kupplungsarmtime volume out when the seal chambers the kupplungsarmate Vo lumen between the Kupplungsarmani and the support body.
  • the pressure-equalizing means may include a through-opening through which air can flow freely.
  • the pressure-equalizing means may comprise a membrane, which allows air to flow through and inhibits or prevents the passage of moisture.
  • the pressure compensation means can enable or force a unidirectional flow of air.
  • the pressure compensation means comprises a check valve which has a flow-through direction in which air can flow through the check valve and a blocking direction in which the check valve blocks air from flowing through.
  • the check valve can communicate with a second volume, for example the second volume explained below, which is preferably significantly larger than the volume on the clutch arm side. Air can flow slowly into this second volume, for example, in particular through a membrane or the like, which will also be explained.
  • the non-return valve blocks when the fixing device is moved from the release position to the fixing position, so that, for example, the inflow of moisture into the second volume, which will be explained below, is prevented.
  • air can flow out of the volume on the coupling arm, for example past the seal enclosing the volume on the outside of the coupling arm.
  • An advantageous concept also provides that on a side of the support body facing away from the clutch arm side, in particular on a drive side of the support body provided for driving the clutch arm support, a second volume is enclosed in chambers, which is flow-connected to the volume on the clutch arm side via the pressure compensation means, so that air can escape the pressure equalizing agent can flow from the volume on the clutch arm side into the second volume and/or can flow from the second volume into the volume on the clutch arm side.
  • the clutch arm carrier pumps air from the volume on the clutch arm to the second volume or sucks it from the second volume into the volume on the clutch arm.
  • the second volume can be larger or smaller than the volume on the clutch arm side. Provision is preferably made for the second volume to be substantially larger than the volume on the clutch arm side and/or the second volume is at least 50%, preferably at least 100%, more preferably at least 150% greater than the clutch arm side volume.
  • the second volume can form a buffer volume for the volume on the clutch arm.
  • the air flowing out of the volume on the clutch arm side has little or no weight in relation to the second volume.
  • An advantageous concept provides that the second volume is enclosed by a housing which is arranged on the supporting body.
  • the housing is suitable for many purposes. It is preferably provided that a control unit for controlling the trailer coupling and/or a drive device, in particular an electric drive motor and/or a gearbox, for driving the coupling arm carrier between the use position and the non-use position and/or the fixing device between the fixing position and the release position is arranged.
  • a control unit for controlling the trailer coupling and/or a drive device in particular an electric drive motor and/or a gearbox, for driving the coupling arm carrier between the use position and the non-use position and/or the fixing device between the fixing position and the release position is arranged.
  • the following measure contributes to easier assembly of the trailer hitch.
  • the housing has an assembly opening through which at least one mechanical component of the fixing device, in particular a fixing actuation body, can be introduced into an interior of the housing and mounted on the trailer hitch when the housing is arranged on the supporting body.
  • the mounting opening is coaxial to the pivot axis.
  • the pivot axis is, for example, at the same time an adjustment axis, along which the fixing actuation body is adjustably mounted on an actuation body guide.
  • the trailer hitch has a unidirectionally moisture-permeable passage component, in particular a membrane, which allows moisture to escape from a closed volume of the hitch and seals or substantially blocks entry of moisture into the volume.
  • the unidirectionally moisture-permeable passage component in particular a membrane, is arranged on the second volume, so that moisture flowing into the volume on the coupling arm side flows through the pressure compensation means into the second volume and via the moisture-permeable passage component into an area surrounding the trailer hitch from the second volume can flow out.
  • moisture can get past the seal into the volume on the coupling arm, but is carried away again to an area surrounding the trailer coupling via the passage component or the membrane.
  • the assembly opening is advantageously closed or ver closable by a cover.
  • a pressure-equalizing means and/or a unidirectionally moisture-permeable passage component is advantageously arranged on the cover.
  • An advantageous embodiment of the above trailer hitch is a trailer hitch which, together with the features mentioned at the outset or the features of the preamble of claim 1, is characterized in that it has a housing arranged on the vehicle mount which chambers a volume, and that it has a pressure compensation means, in particular a membrane, through which air can flow into the volume enclosed by the housing and/or can flow out of the volume.
  • the membrane comprises or is formed by a fabric that is permeable to air but prevents the passage of moisture at least in one direction of flow.
  • the fixing device has a fixing actuating body, which can be adjusted on an actuating body guide of an actuating body between a fixing release position and a fixing actuating position along an in particular linear actuating travel, for actuating at least one form-fitting body, which in the fixing actuating position moves into a Form-fitting receptacle engages in a form-fitting manner, so that the fixing device assumes the fixing position, and can be adjusted out of engagement with the form-fitting receptacle in the fixing release position, so that the fixing device assumes the release position, that the trailer hitch has a release drive acting on a release drive contour of the fixing actuating body in the direction of actuating the fixing actuating body the fixing release position.
  • the fixing actuation body can be provided and designed for direct or indirect actuation of the at least one fixing body.
  • the fixing body can engage, for example, in such a form-fit receptacle that the hitch arm carrier is fixed in a rotationally fixed manner with respect to the bearing base.
  • the positive-locking receptacle is configured as a trough or cap, into which the fixing body, configured for example as a ball, bolt or the like, engages in the fixing position.
  • the fixing body prefferably be designed as a drive body which adjusts the coupling arm carrier with respect to the bearing base, in particular linearly, or is designed for such an adjustment that form-fitting elements arranged on the bearing base and the coupling arm carrier for example spherical form-fitting elements, conical form-fitting elements or the like, are engaged with one another in the fixing position and are disengaged in the release position.
  • the fixing actuation body can also be distinguished, for example, as a locking bolt.
  • the fixation actuation body can be moved back in the direction of the fixation actuation position. be opened, for example by the force of a spring, so that the fixing device is ready, so to speak, for further fixing of the trailer coupling, for example when the coupling arm carrier or the coupling arm has reached the use position or the non-use position.
  • the fixing actuation body prefferably has a support body with a support contour which is supported on an abutment contour of an abutment body, while the fixation actuation body assumes the fixing release position.
  • fixation actuation body is supported and/or guided by the abutment body while the fixation actuation body assumes the fixation release position.
  • the fixing actuation body can have a plurality of support bodies, on each of which a support contour is arranged, or the support contour can be provided on a plurality of support bodies of the fixation actuation body.
  • two support bodies which are arranged at an angular distance from the pivot axis of the coupling arm carrier and each have a support contour are arranged on the fixing actuation body.
  • abutment bodies can be provided, each of which provides an abutment contour or a section of a multi-part abutment contour. However, it is preferably provided that the abutment contour is provided on a single abutment body.
  • positive-locking elements for example balls and spherical caps
  • the form-fitting elements are kept disengaged by the support contour and the abutment contour when the fixing actuation body assumes the fixing release position.
  • no spacer element arranged next to the form-locking elements is necessary in order to keep the form-locking elements on the clutch arm support and the bearing base are arranged to be held disengaged in the release position.
  • the fixing actuation body and/or the support body participates in a pivoting movement of the trailer coupling and/or the coupling arm carrier at least in sections.
  • the fixing actuation body and/or the support body is held on the actuation body guide body in a rotationally fixed manner with respect to the pivot axis or with limited rotational play.
  • Rotary driving contours are advantageously present between the fixing actuation body and the actuation body guide body.
  • the fixing device with respect to the coupling arm carrier and the bearing base comprises positive locking elements which are stationary and which interlock positively in the fixing position of the fixing device at least in the position of use of the coupling arm carrier.
  • the form-fitting elements are, for example, balls and spherical caps, toothing or the like of other form-fitting elements.
  • the positive-locking elements are provided and designed for a non-rotatable fixation of the coupling arm carrier on the bearing base with respect to the pivot axis.
  • the coupling arm carrier is mounted on the bearing base so that it can move linearly parallel to the pivot axis in order to bring the form-fitting elements into engagement or disengagement.
  • the trailer coupling advantageously has a fixing drive in order to adjust the fixing device into the fixing position and/or to adjust the coupling arm carrier towards the supporting body.
  • the trailer coupling has a release drive in order to move the fixing device into the release position and/or to move the coupling arm carrier away from the supporting body.
  • the fixing drive and/or the release drive can be actuated manually.
  • motor actuation is preferred.
  • the trailer hitch has at least one electric drive motor for the fixing drive and/or the release drive.
  • the fixing drive and/or the release drive can be driven by a spring arrangement, for example a single spring, in particular a helical spring.
  • the fixing device is preferably acted upon in the fixing position by a spring or spring arrangement.
  • the fixing actuation body preferably forms part of a fixing drive or the fixing drive, in particular a linear drive, to move the hitch arm carrier between a position in which the form-fitting elements engage in one another and the fixing device assumes its fixing position, and a position in which the form-fitting elements do not engage in one another to operate and/or adjust.
  • the fixing actuation body preferably forms part of a release drive, in particular a linear drive, in order to move and/or actuate the coupling arm carrier from the aforementioned fixing position into a position in which the positive-locking elements do not engage or are disengaged and the fixing device is in its release position occupies, to operate and / or to adjust.
  • a release drive in particular a linear drive
  • the fixing actuation body forms part of a release drive and has a release actuation contour of the release drive for driving the coupling arm carrier away from the bearing base into a release position, so that the positive-locking elements disengage. Then the fixing device assumes its release position.
  • the actuating body guide body has a guiding contour for guiding the fixing actuating body, in particular linearly, along the actuating travel, in particular linear, between the fixing actuating position and the fixing release position.
  • the guide contour is designed, for example, as a longitudinal groove or as a longitudinal slot or as a longitudinal rib designed on the actuator body guide body.
  • a guide element, which is in engagement with the guide contour, is advantageously provided on the fixing actuation body.
  • at least one guide projection arranged transversely and/or at right angles to the actuating travel is provided on the fixing actuation body, which engages with the guide contour of the actuation body guide body.
  • the guide contour is designed, for example, as a longitudinal rib
  • a guide receptacle is arranged on the fixing actuation body, for example, which rib engages with the longitudinal.
  • the guide contour expediently forms an anti-twist contour for guiding the fixing actuation body in a torsion-proof manner with respect to a pivot axis along the actuation adjustment path.
  • the aforementioned locking receptacle is aligned with this guide contour in the position of use and/or the position of non-use.
  • the support body can engage both in the locking mechanism and in the guide contour.
  • the abutment contour is different from the guide contour of the actuating body guide body and/or is arranged next to the guide contour. Consequently, both are present, the abutment contour of the abutment body and the guide contour of the guide body.
  • the release drive actuates the fixation actuation body both in the direction of the fixation actuation position and in the direction of the fixation release position.
  • the release drive advantageously forms a fixing drive or a component part of a fixing drive.
  • the release drive is exclusively a release drive. It is preferably provided that the release drive actuates the fixing actuation body exclusively in the direction of the fixing release position, while in the opposite direction, in the direction of the fixing actuation position, a spring arrangement or a spring, in particular a helical spring, is provided.
  • fixation actuation body is loaded into the fixation actuation position by a spring arrangement, in particular a helical spring, and the release drive acts against the force of the spring arrangement when the fixation actuation body is actuated in the direction of the fixation release position.
  • the coupling arm carrier on the one hand and on the other hand abutment body and the support body are arranged on opposite sides of a support body of the vehicle holder having the bearing base.
  • the aforementioned positive-locking elements of the fixing device are arranged, for example, which are engaged in the fixing position and disengaged in the release position.
  • These form-fitting elements on the one hand and the arrangement of abutment body and support body on the other hand are arranged on opposite sides of the support body.
  • the operating body guide body is preferably arranged on the vehicle holder, in particular the bearing base of the vehicle holder.
  • the fixing abutment contour and the release abutment contour are preferably arranged stationary with respect to the coupling arm carrier. It is preferred if the fixing abutment contour and the release abutment contour are arranged opposite one another on a form-fit receptacle, in which the fixing actuation contour and the release actuation contour engage directly or a fixation body actuated by the fixation actuation contour and a release body actuated by the release actuation contour engage.
  • the fixing abutment contour and the release abutment contour it is also possible for the fixing abutment contour and the release abutment contour to be arranged on different form circuit recordings or actuation recordings.
  • the actuating body guide body is arranged immovably on the bearing base with respect to the pivot axis about which the coupling arm carrier is pivotably mounted with respect to the bearing base.
  • the actuating body guide body can be arranged on the bearing base such that it can pivot or be twisted with respect to the pivot axis.
  • the trailer hitch or a drive device of the trailer hitch has a pivoting drive device for pivoting the coupling arm carrier about the at least one pivot axis and a fixing drive device for actuating the fixing device between the fixing position and the release position.
  • the fixing drive device has, for example, a fixing drive wheel.
  • the pivoting drive device advantageously has a pivoting drive wheel.
  • the drive device comprises only a single drive motor or is formed by it.
  • the drive motor drives the fixing drive wheel and the swivel drive wheel directly or via a gear.
  • the drive motor can have a gear on the output side, for example a planetary gear, the drive shaft of which is movement-coupled to the fixing drive wheel and the swivel drive wheel, in particular non-rotatably connected.
  • the fixing drive wheel and the swivel drive wheel are arranged on a common drive shaft, in particular a drive shaft of the drive motor or a gear driven by the drive motor.
  • the drive shaft may be rotatably mounted with respect to the hitch mounting base or on the hitch mounting base.
  • the fi xing drive wheel and the swivel drive wheel can be driven at the same speed.
  • the fixing drive wheel and the swivel drive wheel are preferably arranged in a rotationally fixed manner on the drive shaft. It is also possible that the fixing drive wheel and/or the pivoting drive wheel have rotational play with respect to the drive shaft, but are rotationally coupled.
  • the actuating body guide body forms a support body for the coupling arm carrier.
  • the Kupplungsarm is supported on this support body, wherein the support body or the actuating body is in turn supported by the guide body bracket on the bearing base or the vehicle.
  • actuating body guide body protrudes in front of the hitch be bracket or the carrier body of the clutch bracket on a side facing away from the clutch arm carrier.
  • the actuating body guide body to be arranged in an interior space of at least one drive wheel, for example a swivel drive wheel and/or a fixing drive wheel.
  • the actuating body guide body forms a bearing body and/or a bearing shaft and/or a bearing axis for at least one drive wheel of the drive device, for example for the swivel drive wheel and/or the fixing drive wheel.
  • the swivel drive wheel and/or the fixing drive wheel are advantageously arranged between an abutment body, which is provided to support the movement body guided on the actuating body and/or accommodated in this fixing actuation body, and the supporting body, which holds the movement body-guidance body carries.
  • the fixing actuation movement body mounted on the actuation body guide body between the fixing release position and the fixation actuation position has a support body with a support contour which is supported or guided on an abutment contour of an abutment body.
  • the abutment body is advantageously arranged on a free end region of the actuating body guide body that faces away from the supporting body.
  • the pivoting drive wheel and/or the fixing drive wheel are advantageously arranged between the abutment body and the support body of the coupling holder that carries the actuating body guide body.
  • the actuating body guide body forms a bearing shaft or a bearing axis for the coupling arm carrier.
  • the actuating body guide body is advantageously pivoted on the bearing base about the pivot axis about which the coupling arm carrier is pivotally mounted with respect to the bearing base, preferably by means of a bearing body pivotally or rotatably mounted on the bearing base.
  • the actuating body guide body is preferably designed as a hollow shaft.
  • the actuating body guide preferably includes a guide channel in which the fixing actuating body is guided, in particular linearly.
  • the support body is rotatably mounted on the bearing base about the at least one pivot axis and is coupled for movement to the second pivoting drive wheel, which is arranged on a drive side of the bearing base opposite the coupling arm side
  • the trailer hitch advantageously has a pivoting drive device with a pivoting drive for pivoting the coupling arm carrier about the at least one pivot axis and/or a fixing drive device for actuating the fixing device between the fixing position and the release position.
  • a pivoting drive device with a pivoting drive for pivoting the coupling arm carrier about the at least one pivot axis and/or a fixing drive device for actuating the fixing device between the fixing position and the release position.
  • the coupling arm carrier it would be possible for the coupling arm carrier to be manually adjustable between the use position and the non-use position.
  • the fixing device is advantageously spring-loaded in the direction of the fixing position.
  • the pivoting drive device and/or the fixing drive device can comprise one or more, in particular, electric drive motors. It is preferably provided that a single drive motor is provided for driving the pivoting drive device and the fixing drive device.
  • the at least one drive motor can have a gear on the output side, for example a planetary gear.
  • the transmission of the drive motor is preferably integrated into the structural unit of the drive motor, for example in its motor housing.
  • the transmission of the drive motor is preferably encapsulated and/or arranged in a motor housing of the drive motor.
  • a pivoting drive wheel of the pivoting drive device and a fixing drive wheel of the fixing drive device are preferably non-rotatably arranged on a common output shaft, in particular an output shaft of the drive motor or a gear driven by the drive motor.
  • the fixing drive wheel and the swivel drive wheel can be driven at the same speed by means of the output shaft. It is also possible for the fixing drive wheel and/or the swivel drive wheel to have rotational play with respect to the drive shaft, but for them to be rotationally coupled.
  • the fi xing drive wheel and the swivel drive wheel are preferably gear wheels, although friction wheels or the like are also readily possible.
  • the swivel drive wheel and the fixing drive wheel may be formed by a single drive wheel, which is simultaneously in driving engagement with a second swivel drive wheel which is rotatably coupled to the coupling arm carrier and drives it, and a second swivel drive wheel which is movably coupled to the fixing device and drives it second fixing drive wheel is, for example in direct driving engagement or via a transmission gear, in particular a gear train.
  • the fixing drive wheel is in particular directly driving engagement with a second fixing drive wheel and the swivel drive wheel is in direct driving engagement with a second swivel drive wheel.
  • at least one transmission element for example a further gearwheel, to be arranged between the pivoting drive wheels and/or the fixing drive wheels.
  • the flat sides of the second drive wheels are preferably opposite one another, in particular directly against one another, and/or are preferably designed as gear wheels. It is preferred if the second drive wheels are interspersed with the pivot axis and/or are mounted on the coupling arm carrier such that they can rotate about the pivot axis.
  • the pivoting drive wheel and the fixing drive wheel and/or that the second pivoting drive wheel and the second fixing drive wheel drive wheel have ring gears, in particular with different circumferential radii.
  • the sprockets can have different or the same radii.
  • the toothed rims can have geometrically different toothings and/or tooth geometries and/or tooth spacings.
  • fixing drive wheel and the swivel drive wheel are arranged coaxially with respect to their axis of rotation. This also results in a compact design.
  • the second pivoting drive wheel and the second fixing drive wheel are arranged coaxially with respect to their axis of rotation.
  • the axis of rotation may be a geometric axis, for example the at least one pivot axis, about which the coupling arm carrier or coupling arm is pivotable with respect to the bearing base.
  • the second pivoting drive wheel and/or the second fixing drive wheel in particular the outer circumferences of the same, can be ring-shaped around the Extend pivot axis and / or have penetrated by the pivot axis sleeve body or sleeve sections.
  • An advantageous concept provides for the fixing drive wheel to be drive-coupled to the second fixing drive wheel and the pivoting drive wheel to the second pivoting drive wheel, in particular rotationally coupled, such that when the fixing drive wheel and the pivoting drive wheel are driven simultaneously, the second fixing drive wheel, the fixing device is actuated vorei lend before a pivoting movement of the coupling arm carrier from the fixing position in the direction of the release position. It is particularly advantageous if the swivel drive wheel sets the second swivel drive wheel in motion and the fixing drive wheel sets the second swivel drive wheel in motion at the same time. This results, for example, in geometric freedom in the design of actuator contours, with which the second swivel drive wheel supports the coupling arm and the second fixing drive wheel actuates the fixing device.
  • the fixing drive wheel is drive-coupled, in particular rotationally coupled, to the second fixing drive wheel with a first transmission ratio and the pivoting drive wheel is drive-coupled, in particular rotationally coupled, to the second pivoting drive wheel with a second transmission ratio that differs from the first transmission ratio.
  • the second fixing drive wheel can be driven with less force but higher speed than the second pivoting drive wheel.
  • the first transmission ratio is configured in relation to the second transmission ratio in such a way that the second fixing drive wheel is driven ahead of the second pivoting drive wheel.
  • a clearance between the second swivel drive wheel and the coupling arm carrier with respect to the rotary entrainment about the at least one swivel axis can be shorter than in an embodiment in which the first and the second transmission ratio are the same.
  • the swivel drive has a single gear stage, which is formed by the pairing of the second swivel drive wheel and swivel drive wheel. It is also advantageous for the fixing drive if it has only a single gear stage, which is formed by the second fixing drive wheel and the fixing drive wheel.
  • the second swivel drive wheel with the clutch arm carrier during a pivoting driving phase in which the second swivel drive wheel pivots the clutch arm carrier about the axis of rotation, un indirectly and without an interposed gear in actuating engagement is advantageous.
  • a rotary driver or rotary driving device is arranged between the second swivel drive wheel and the coupling arm carrier on that side of the bearing base on which the coupling arm is arranged.
  • the bearing base serves to movably support the coupling arm carrier between the use position and the non-use position about the at least one pivot axis.
  • the bearing base includes, for example, one or more pivot bearings.
  • the pivot bearing can also be a pivot sliding bearing.
  • the coupling arm support is pivotable on the bearing base about the pivot axis and is slidably mounted along a sliding axis, which is preferably the pivot axis or is coaxial therewith.
  • the coupling arm carrier is mounted on the coupling holder or the bearing base so that it can slide parallel to the pivot axis, for example in order to engage or disengage form-fitting elements that are arranged on the bearing base, for example a supporting body of the bearing base, and the coupling arm carrier are. It is possible that the coupling arm is firmly arranged on the coupling arm support.
  • the clutch arm may be integral with the clutch arm support.
  • a concept can provide that the coupling arm can be releasably connected to the coupling arm carrier. It is possible, for example, for a plug-in receptacle for plugging in the coupling arm to be arranged on the coupling arm carrier.
  • the plug-in receptacle is arranged, for example, on a receiving body, in particular a tubular receiving body, which is arranged on the clutch arm carrier or forms part of the clutch arm carrier.
  • the receiving body can be arranged, for example, on a holding arm that protrudes from the coupling arm carrier.
  • the coupling arm which is detachable with the
  • Kupplungsarm is connected, advantageously forms part of the tow coupling.
  • a holder for a rear load carrier for example a bicycle carrier
  • the coupling arm or the holder for the rear load carrier has, for example, a plug-in projection that can be inserted into the plug-in socket of the receiving body or the coupling arm carrier.
  • Fixing means are preferably provided, for example a bolt, bolt or the like, which is transverse to a plug-in axis, along which the plug-in projection of the coupling arm or the holder for the rear load carrier can be inserted into the plug-in socket, for fixing the plug-in projection in the plug-in socket in the two aforementioned components is pluggable.
  • a cotter pin or the like can be provided for the bolt or bolt.
  • a coupling body in particular a coupling ball, is arranged on a free end area of the coupling arm.
  • the coupling arm may have one or more bends.
  • the coupling arm can also be a straight coupling arm or have an elongated shape.
  • a trailer socket for Stromver supply of a trailer or load carrier is preferably arranged on the coupling arm.
  • the coupling arm is advantageous in the motor vehicle mounted state less than in the position of use in front of the motor vehicle.
  • the positive-locking elements of the fixing device are stationarily arranged on the coupling arm carrier and the bearing base, in particular a supporting body of the bearing base.
  • the positive-locking elements can be disengaged parallel to the pivot axis by linear displacement of the coupling arm carrier relative to the bearing base, corresponding to the release position of the fixing device, or engaged, corresponding to the fixing position of the fixing device.
  • the positive-locking elements are preferably designed as balls and spherical caps. Alternatively, however, tooth structures, cylindrical projections and cylindrical receptacles or the like are also advantageously possible as positive-locking elements.
  • Figure 1 shows a trailer hitch in a perspective view
  • FIG. 2 shows a cross section of the trailer hitch according to FIG. 1 along section line A-A in FIG. 1,
  • FIG. 3 shows a perspective view of a rotary driving device between a coupling arm carrier and a supporting body of the trailer coupling according to the preceding figures
  • FIG. 4 shows part of a fixing device of the trailer hitch according to the preceding figures with a position sensor for detecting a position of a fixing actuation body of the fixing device
  • FIG. 5 shows a perspective view of a safety device of the trailer hitch according to the above figures in an unlocked position
  • FIG. 6 shows a top view of the safety device according to FIG. 5
  • FIG. 7 shows a perspective view of the safety device according to FIGS. 5 and 6, but in a safety position
  • FIG. 8 shows a top view corresponding to FIG. 6 of the safety device according to FIG. 7 in the safety position
  • FIG. 9 shows a support body of the fixing actuation body in a perspective oblique view
  • FIG. 10 shows the supporting body according to FIG.
  • FIG. 11 shows a release drive contour and a support contour of the fixing actuation body, which are turned to the front in FIG. 9,
  • FIG. 12 shows a further release drive contour and a further support contour of the fixing actuation body, which are facing forwards in FIG. 10,
  • FIG. 13 shows a cross-sectional view corresponding to a section line B-B through the support body according to FIG. 9 and a tie rod passing through the support body and connected to the fixing actuation body,
  • FIG. 13a a detail DO from FIG. 13, 14 shows a perspective view of an abutment body for supporting the support body according to FIGS. 9-12,
  • FIG. 15 shows a partial view of a cross-sectional illustration along section line X-X according to FIG. 1, the fixing device being in its fixing position and the fixing actuation body assuming the fixing actuation position,
  • FIG. 16 shows a detail D1 from FIG. 15, the fixing actuation body being moved into a fixing release position
  • FIG. 17 shows a cross-sectional view through the trailer hitch according to the previous figures, approximately along section line C-C in FIG. 1,
  • FIG. 19 shows a cross-sectional view of the trailer hitch according to the preceding figures, approximately along a section line D-D, approximately corresponding to a detail D3 in FIG. 17,
  • FIG. 20 shows the detail D3 according to FIG. 19, with a support contour being arranged completely in the area of a folded section of the abutment body according to FIG. 14, FIG.
  • FIG. 22 shows a perspective oblique view of the actuating body per guide body according to FIG. 21 and the spring support body, FIG. 23 partial longitudinal section through the actuating body per guide body according to FIG. 22,
  • FIG. 24 a drive body of the fixing device of the trailer hitch as well as the actuating body guide body in cross section, approximately corresponding to FIG. 2,
  • FIG. 25 shows a cross-sectional view of the drive body according to FIG. 24,
  • FIG. 26 shows a side view of the trailer hitch according to the above figures,
  • FIG. 27 is a perspective oblique view of the trailer hitch according to the above figures, obliquely from behind,
  • FIG. 28 shows a sectional view through the trailer hitch according to FIG. 27, approximately along a section line E-E,
  • Figure 29 a vehicle mount of the trailer hitch with a bearing base
  • Figure 30 is a bottom view of the trailer hitch according to the above figures.
  • FIG. 31 shows a perspective oblique view of a modification of the trailer hitch according to the above figures with a receiving body and a coupling arm releasably received in a socket of the receiving body
  • FIG. 32 shows a lower section of the trailer hitch according to FIG. 31 with the receiving body.
  • a trailer hitch 10 has a coupling arm 11, at the free longitudinal end 11a, a coupling body 12, such as a coupling ball, for Coupling a trailer shown schematically AHH and / or a rear load carrier HLL, such as a bicycle rack, is arranged.
  • the coupling arm 11 has an arm section 11b on which a receptacle 11c for a trailer socket 11s is arranged.
  • the arm section 11b extends between the longitudinal end 11a and a longitudinal end 11d opposite the longitudinal end 11a, with which the coupling arm 11 is connected to a coupling arm carrier 13 .
  • Curved sections 11e and 11f extend between the arm section 11b and the longitudinal ends 11a, 11d.
  • the trailer hitch 10 further includes a vehicle mount 15 with which the trailer hitch 10 is attached to a vehicle 400, such as a motor vehicle.
  • a vehicle 400 such as a motor vehicle.
  • the trailer hitch 10 or the vehicle 400 has a cross member 401 which extends transversely at a rear of the vehicle 400 and is arranged under a bumper 402, for example.
  • the trailer socket 11s has a housing 11g in which plug contacts (not visible in the drawing) are arranged.
  • the plug contacts can be covered by a cover 11t, with which the housing 11g can be closed.
  • the housing 11g can be inserted into the receptacle 11c and can be fixed to the coupling arm 11 by means of screws 11u.
  • a line 11v which can be connected to an on-board network 403 of the vehicle 400 that is indicated schematically in the drawing, leads to the plug-in contacts that are not visible.
  • the line 11v is led out on one side of the coupling arm 11 from the receptacle 11c, on which the cover 11t is also located.
  • the course of the line 11 v along the coupling arm 11 is shown schematically in dashed lines.
  • the line 11v has several individual wires (not visible in the drawing) which are each connected to a contact of the plug contacts of the trailer socket 11s.
  • An arrow PF indicates how the housing 11g can be inserted into the recepta
  • the vehicle mount 15 includes a receptacle 15a for receiving the cross member 401.
  • the receptacle 15a has, for example, screw receptacles 15b for receiving screws that pass through the cross member 401 and are screwed or screwed into the screw socket 15a.
  • a support body 16 protrudes from the receptacle 15a, on which a pivot bearing 17 is arranged, with which the coupling arm carrier 13 and thus the coupling arm 11 can be pivoted about a pivot axis S between a use position G, which is shown in solid lines in Figure 1, and a non-use position N, shown in broken lines in Figure 1, is pivotable.
  • the non-use position N the coupling arm 11 is completely or essentially hidden behind the bumper 402, for example.
  • the coupling arm 11 projects in front of the bumper 402, so that a trailer or load carrier can be attached to the coupling body 12.
  • the supporting body 16 is, for example, plate-like.
  • the hitch 10 has a fixed to the clutch arm carrier 13 arrange th clutch arm 11 on.
  • a modification of the hitch 10 in the form of a hitch 310 with a detachable coupling arm 311 is shown in FIGS. 31 and 32.
  • FIG. 31 and 32 A modification of the hitch 10 in the form of a hitch 310 with a detachable coupling arm 311 is shown in FIGS. 31 and 32.
  • a holding arm 319 protrudes, on which a receiving body 313, for example a tube or profile tube, in particular a square tube is arranged.
  • the receiving body 313 has a plug-in receptacle 314 for inserting a plug-in section 315 of a coupling arm 311 .
  • the insertion of the coupling arm 311 into the plug receptacle 314 or the removal of the coupling arm 311 from the plug receptacle 314 is indicated by a double arrow RM in the drawing.
  • locking receptacles 316 are arranged for inserting a bolt 317 which serves to lock the coupling arm 311 on the recording body 313 .
  • the bolt inserted into the locking receptacles 316 317 can be secured by a securing element 318, for example a cotter pin, to be lost in the position locking the coupling arm 311 on the receiving body 313.
  • the coupling arm 311 has a support section 320 on whose end 321 facing away from the plug-in section 315 a coupling body 312 , for example a coupling ball, is arranged.
  • the support section 320 and the plug-in section 315 are firmly connected to one another and/or extend along a common longitudinal axis.
  • the coupling body 312 is detachably connected to the support section 320 by means of a screw connection, for example, so that other coupling bodies 312, for example larger or smaller, can be used as an alternative.
  • the supporting body 16 forms a bearing base 18 of the pivot bearing 17 and has a bearing receptacle 19 in which a bearing body 20 is accommodated so as to be pivotable about the pivot axis S.
  • the bearing body 20 has a flange section 20a, which is supported on a side of the support body 16 referred to below as the drive side 16a, and a fastening section 20b protruding in front of a clutch arm side 16k opposite the drive side 16a, for fastening a securing body 21.
  • the securing body 21 is designed, for example, in the manner of a nut and is screwed onto the fastening section 20b.
  • a bearing section 20I extending between the flange section 20a and the fastening section 20b is held in the bearing receptacle 19 and the bearing body 20 can be pivoted about the pivot axis S, but parallel to the pivot axis S apart from a movement necessary for rotational play about the pivot axis S - Immovably added to the bearing mount 19.
  • the bearing body 20 carries a support body 25 on which the coupling arm carrier 13 is supported.
  • the support body 25 is designed, for example, in the manner of a shaft body or bolt.
  • the bearing body 20 has a holding receptacle 20h in which the support body 25 is accommodated.
  • the holding receptacle 20h is a passage opening, for example.
  • the support body 25 protrudes on opposite sides in front of the holding receptacle 20h, namely on the one hand with a supporting section 25t in front of the coupling arm side 16k of the supporting body 16 and on the other hand with a drive section 25a in front of the drive side 16a of the supporting body 16.
  • the support body 25 has a thread 25g on its outer circumference, with which it is screwed into a thread 20g of the holding receptacle 20h of the bearing body 20 .
  • a longitudinal position of the support body 25 with respect to the pivot axis S on the bearing body 20 can be adjusted using the threads 20g, 25g, which is advantageous in connection with a fine adjustment of a fixing device 40 .
  • screws 20s are provided, which are screwed into screw receptacles 20v of the bearing body 20.
  • the screw receptacles 20v are arranged on the inner circumference of the retaining receptacle 20a, but are partially open radially laterally with respect to the retaining receptacle 20h. If the screws 20s are now screwed into the screw receptacles 20v, they simultaneously engage in the support body 25, in particular its thread 25g, so that the support body 25 is fixed to the bearing body 20 so that it cannot move axially with respect to the pivot axis S.
  • the screws 20s partially destroy the thread 25g, so to speak, or plastically deform the thread 25g, so that particularly secure clamping and securing is possible as a result.
  • gluing the screws 20s in the screw receptacles 20v is advantageous.
  • the threads 20g and 25g can be glued together.
  • the threads 20g, 25g can also be pressed, embossed or crimped together,
  • the coupling arm carrier 13 has a receptacle 14 for the support body 25, in which the support body 25 engages. Between the support body 25 and the clutch ment arm carrier 13 is a rotary driving device 26 is provided, using de rer the support body 25 can take the Kupplungsarmani 13 about the pivot axis S with.
  • the rotary entrainment device 26 comprises, for example, an annular body 26a with a receptacle 26b for receiving the support body 25.
  • entrainment projections 26c protrude radially inward with respect to the pivot axis S
  • entrainment projections 26d project radially outward with respect to the pivot axis S, which protrude parallel to the pivot axis S longitudinal grooves 26e and 26f on the support body 25 or on the coupling arm support 13 engage in a longitudinally displaceable manner with respect to the pivot axis S.
  • longitudinal grooves 26e and the entrainment projections 26c and the longitudinal grooves 26f and the entrainment projections 26d there is a rotational play with respect to the pivot axis S, which is advantageous for the fixing device 40 .
  • the trailer hitch 10 comprises a drive device 30.
  • the drive device 30 serves to drive the coupling arm 11 between the use position G and the non-use position N and also to drive the fixing device 40.
  • the support body 25 can be driven by the drive device 30 about the pivot axis S, so that the support body 25 can adjust the coupling arm carrier 13 between the use position G and the non-use position N.
  • the drive device 30 includes a drive motor 31 for driving a gear 32 .
  • a drive axis A1 of an output 31a of the drive motor 31 runs, for example, in a plane that is parallel to a plane in which the pivot axis S runs.
  • the gear 32 has an angular gear, wherein an output shaft 33 of the gear 32 rotates about a drive axis A2, which is at an angle to the drive axis A1, preferably at right angles.
  • the output 31a drives a drive wheel 32a of the transmission 32 .
  • the drive wheel 32a is arranged on the output shaft 33 .
  • the drive gear 32a and a driven gear arranged on the drive 31a are, for example, bevel gears.
  • An output gear 33a is arranged on the output shaft 33 and meshes with a drive gear 34a which is arranged on a drive shaft 34 .
  • the drive shaft 34 rotates about a drive axis A3 which is angled, preferably perpendicular, to the drive axis A2. It is preferred if the drive axes A3 and A1 lie in mutually parallel planes.
  • the drive wheel 34a and the driven wheel 33a form part of a Winkelge gear 34g.
  • the drive wheel 34a is a crown wheel.
  • the drive wheels 35, 36 form fixing drive wheels of a fixing drive device 37a and serve to drive the fixing device 40.
  • the drive wheel 35 is a first fixing drive wheel and the drive wheel 37 is a second fixing drive wheel.
  • the drive wheel 36 and the drive wheel 38 form swivel drive wheels, for example a first swivel drive wheel and a second
  • Pivot drive wheel a pivot drive device 36a and are used to drive the support body 25 and/or the coupling arm carrier 13.
  • the drive wheels 37, 38 rotate about a drive axis A4 which is coaxial with the pivot axis S or the adjustment axis V in the present case.
  • the drive wheel 38 has a receptacle 38a in which the support body 25 is accommodated.
  • rotationally driving contours 38b In front of the receptacle 38a there are rotationally driving contours 38b, for example projections which engage with rotationally driving contours 25b of the support body 25.
  • the rotary driving contours 25b comprise, for example, receptacles 25c extending in the circumferential direction with respect to the pivot axis S.
  • the receptacles 25c extend over a larger angular range or circumferential range than the projections that form the rotary driving contours 38b, so that the rotary driving contours 38b have rotational play with respect to the pivot axis. have se S between the rotary driving contours 25b. It is thus possible, for example, for the drive wheel 38 to run through a rotation angle without the drive wheel 38 driving the support body 25 about the pivot axis S. At the same time, the drive wheel 37 can rotate and thus exert a driving force on the fixing device 40 without the coupling arm 11 pivoting about the pivot axis S.
  • Such rotational play is necessary, for example, for the subsequently explained actuation of the fixing device 40 in the use position G and the non-use position N, so that it can be moved from its fixing position F, which fixes the coupling arm 11 or coupling arm carrier 13 in the use position G or non-use position N, into a release position L is in which the Kupplungsarmträ ger 13 and thus the coupling arm 11 about the pivot axis S are pivotable.
  • the fixing device 40 comprises form-fitting elements 41 and 42, which in the use position G and the non-use position N are in engagement with one another, so that the coupling arm carrier 13 is fixed in place, in particular non-rotatably, with respect to the vehicle mount 15 or the bearing base 18 by the fixing device 40.
  • the fixing device 40 then assumes its fixing position F.
  • the positive-locking elements 41, 42 are disengaged, the fixing device 40 is in its release position L.
  • the positive-locking elements 41, 42 are designed as projections and corresponding receptacles, in particular as spherical projections and spherical receptacles. Tooth structures or the like are also easily possible.
  • the positive-locking elements 41 and 42 are arranged on opposite sides of the coupling arm carrier 13 and the bearing base 18, in particular the supporting body 16.
  • the positive-locking elements 41, 42 are ring-shaped, for example circular, about the pivot axis S on the coupling arm side 16k of the support body 16 and an opposite surface or side 13s of the coupling arm support 13 is arranged.
  • the form-fitting elements 41, 42 disengage from one another and by displacing the coupling arm carrier 13 towards the supporting body 16, the form-fitting elements 41, 42 engage one another in a form-fitting manner, so that the coupling arm carrier 13 with respect to the bearing base 18 is rotatably fi xed.
  • the fixing device 40 comprises a fixing drive 43, e.g. a linear drive, for adjusting the fixing device 40 into the fixing position F.
  • the fixing drive 43 serves to linearly adjust the coupling arm carrier 13 relative to the support body 16 or to the bearing base 18 along a axis parallel to the pivot axis S, in the present case coaxial, adjustment axis V.
  • the fixing drive 43 is used to adjust the coupling arm carrier 13 towards the support body 16, so that the positive-locking elements 41 and 42 are in engagement with one another.
  • the fixing device 40 has a release drive 47L for adjustment to the release position L, in which the positive-locking elements 41 and 42 are disengaged from one another, so that the coupling arm carrier 13 can be adjusted between the use position G and the non-use position N.
  • the fixing drive 43 and the release drive 47L adjust the coupling arm carrier 13 with respect to the supporting body 16 and/or adjust the positive-locking elements 41, 42 along an adjustment path SW between the fixing position F and the release position L.
  • the fixation drive 43 includes a fixation actuation body 44 which is accommodated in an actuation body guide 45a of an actuation body guide body 45 along the adjustment axis V or parallel to the adjustment axis V and can be displaced.
  • the actuator guide 45a is configured as a guide channel 45b, for example.
  • the fixation actuation body 44 can be adjusted between a fixation release position FF assigned to the release position L and a fixation actuation position FB assigned to the fixation position F along an actuation travel BS.
  • the actuation adjustment path BS runs linearly and/or parallel to the adjustment axis V.
  • the fixation actuation body 44 can be actuated or actuated in a release actuation direction LBR. Then the Kupplungsarmmik 13 is driven away from the support body 16 in a release direction LR, so that the form-fitting elements 41 and 42 are disengaged.
  • the fixation actuation body 44 can be actuated or is to be actuated in a fixation actuation direction FBR.
  • the coupling arm support 13 is driven in a fixing direction FR towards the supporting body 16, as a result of which the positive-locking elements 41 and 42 come into engagement with one another.
  • the operation body guide body 45 is the support body 25 or is provided by the support body 25 .
  • the support body 25 has the function of supporting or carrying the coupling arm carrier 13 on the one hand and the function of guiding the fixing actuation body 44 linearly with respect to the adjustment axis V or parallel to the adjustment axis V and in this respect the actuation body guide body 45 to form or provide.
  • the support body 25 a support body is provided which does not provide the actuating body guide body integrally, but that an actuating body per guide body separate from this support body is provided.
  • the supporting body is configured as a hollow shaft or a tubular body, in which a further tubular body or profiled body providing the actuating body guide body is arranged.
  • the fixing actuation body 44 has a fixing actuation contour 46 and a release actuation contour 47 .
  • the fixing actuation contour 46 acts on fixing bodies 46a, for example balls, which are adjustably accommodated in guides 46b.
  • the guides 46b are, for example, bores or channels that run radially with respect to the adjustment axis V or the pivot axis S in the actuating body guide body 45.
  • the fixing actuation contour 46 e.g. its adjustment along the adjustment axis V, means that the fixing bodies 46a can be displaced radially outwards in front of the guides 46b, in front of the outer circumference of the actuating body guide body 45, so that they engage in a positive-locking receptacle 51 when the fixing actuation tion body 44 is adjusted to the fixing actuation position FB.
  • the form-fit recording 51 is arranged on the coupling arm carrier 13, for example on a drive body 50 which is held stationary on the coupling arm carrier 13.
  • the positive-locking receptacle 51 has a fixing abutment contour 52 for supporting the fixing bodies 46a. When actuated by the fixing actuation contour 46 , the fixing bodies 46a act on the fixing abutment contour 52 to actuate the coupling arm carrier 13 toward the supporting body 16 .
  • the fixing bodies 46a transmit actuating forces from the fixing actuating contour 46 to the fixing abutment contour 52 and thus form transmission bodies 46u.
  • the fixing abutment contour 52 includes adjusting sections 52s and 52e, which are used to enable the fixing bodies 46a to engage the positive-locking elements 41, 42 by adjusting the coupling arm carrier 13 toward the support body 16.
  • the adjustment section 52s has a large inclination obliquely to the adjustment axis V at an angle W52s.
  • the adjustment section 52e is at a smaller angle with respect to the adjustment axis V than the angle W52s W52e sloped flatter.
  • an axis Vx parallel to the adjustment axis V is drawn in.
  • the adjusting section 52s is used to brace the coupling arm carrier 13 with respect to the supporting body 16 and/or to brace the form-fitting elements 41, 42 with one another.
  • the adjusting section 52s preferably has a clamping bevel or is designed as a clamping bevel.
  • a clamping surface or clamping surface 46k with a self-locking oblique inclination is arranged next to the fixing actuation contour 46 of the fixing actuation body 44, so that a torque acting on the coupling arm carrier 13 about the pivot axis S does not result in a loosening of the clamping of the coupling arm carrier 13 from the Support body 16 parallel to the pivot axis S leads.
  • the fixing actuation contour 46 has an adjusting bevel 46s, which is used to quickly move the coupling arm carrier 13 toward the support body 16 and/or to quickly move the form-fitting elements 41, 42 toward one another.
  • the adjustment bevel 46s has a greater inclination with respect to the adjustment axis V than the clamping surface 46k.
  • a securing contour 46n is arranged between the adjusting bevel 46s and the clamping surface 46k, for example a groove, a surface that is not inclined or parallel with respect to the adjustment axis V, or the like.
  • the securing contour 46n is arranged between the fixing actuation contour 46 and the clamping surface 46k.
  • the release-actuating contour 47 can be used to actuate release bodies 47a, for example balls that are accommodated in guides 47b.
  • the guides 47b are, for example, bores or channels that run radially in relation to the adjustment axis V or the pivot axis S in the actuating body guide body 45 .
  • the guides 47b are arranged, for example, at an angular distance from one another with respect to the pivot axis S or adjustment axis V. It is preferred if the guides 47b or the release bodies 47a have the same longitudinal positions with respect to the adjustment axis V.
  • the release actuation contour 47 allows the release bodies 47a to be displaced radially outwards in front of the guides 47b with respect to the adjustment axis V, so that they engage or are in engagement with a release abutment contour 53 in order to move the hitch arm carrier 13 away from the support body 16 along the adjustment axis to press V. As a result, the form-fitting elements 41, 42 are disengaged.
  • the release actuation contour 47 forces the release body 47a into engagement with the release abutment contour 53 when the fixation actuation body 44 is and/or is moved into the fixation release position FF.
  • the release bodies 47a transmit actuating forces from the release-actuating contour 47 to the release abutment contour 53 and thus form transmission bodies 47u.
  • An adjusting bevel 47s of the release actuation contour 47 has an oblique inclination with respect to the adjustment axis V at an angle W47.
  • the adjusting bevel 46s of the fixing actuation contour 46 has an oblique inclination at an angle W46 with respect to the adjusting axis V. Angle W46 is smaller than angle W47. Thus, the adjusting bevel 47s of the release abutment contour 47 is more inclined with respect to the adjustment axis V than the adjusting bevel 46s of the fixing actuation contour 46.
  • the release abutment contour 53 includes an adjustment section 53e, which is inclined more flatly with respect to the adjustment axis V than another adjustment section 53s.
  • the adjusting sections 53e, 53s and the adjusting sections 52s, 52e are designed, for example, as annular, conical inclined surfaces.
  • the positive-locking receptacle 51 has a base 51a which extends between the adjusting sections 52s, 53e.
  • the adjustment section 53e has, for example, an angle W53e with respect to the adjustment axis V, which is drawn in with respect to the axis Vx parallel to the adjustment axis V.
  • the adjustment section 53s has an angle W53s with respect to the adjustment axis V and the axis Vx parallel to the adjustment axis V, which is greater than the angle W53e.
  • a further control section 53e2 (see FIG. 15) or further control sections, which are not shown in the drawing, can optionally be present between the control sections 53e, 53s.
  • the adjusting sections 53e, 53s and 53e2 can have different inclinations. For example, a slant of the control portion 53e2 may be steeper than a slant of the control portion 53e but shallower than a slant of the control portion 53s.
  • the adjusting bevels 47s and 46s act in the sense of a force deflection when the fixing actuation body 44 is adjusted along the actuation adjustment path BS.
  • the adjusting bevel 47s causes a smaller force amplification than the adjusting bevel 46s, which is inclined more flatly with respect to the adjustment axis V.
  • a movement speed behaves with which the transmission body 46u, 47u through the adjusting bevels 46s and 47s with the same amount of the moving speed of the fixing operation body 44 can be operated by the fixing operation body 44 .
  • the transmission bodies 47u are moved by the adjusting bevel 47s at a higher speed than the transmission bodies 46u are moved by the adjusting bevel 46s.
  • the coupling arm carrier 13 is moved away from the supporting body 16 at great speed when the adjusting bevel 47s acts, so that the positive-locking elements 41 and 42 disengage accordingly quickly.
  • the trailer couplings 10 and 310 are advantageously designed for an installation position on the vehicle 400 in such a way that the weight of the coupling arm 11 or the receiving body 313 in the use position G and the non-use position N exerts a torque on the coupling arm carrier 13 about the pivot axis S, which in Sense of a release of the form-fitting elements 41, 42 and / or an adjustment of the Kupplungarmmiks 13 in the direction of the release Stel development L of the fixing device 40 acts.
  • the coupling arm 11 supports the effect of the fixing actuation body 44 in relation to the release drive 47L, so that the setting bevel 47s, which is steeper than the setting bevel 46s, can still exert sufficient force in terms of releasing the fixing device 40.
  • a holding surface 47h of the release-actuating contour 47 is arranged next to the adjusting bevel 47s.
  • the holding surface 47h faces the releasing bodies 47a.
  • the release abutment contour 53 loads the release body 47a in the direction of the holding surface 47h, which, however, supports the release body 47a.
  • the release bodies 47a in turn support the drive body 50, which is firmly connected to the coupling arm support 13, for example on the gently inclined adjusting section 53e, so that the coupling arm support 13 cannot be actuated in the direction of the fixing position F by the force LK.
  • the adjusting bevel 46s is provided for actuating the fixing body 46a in the direction of the fixing abutment contour 52 . Due to the flatter inclination of the adjustment bevel 46s with respect to the adjustment axis V compared to the adjustment bevels 47s, there is a lower adjustment speed with the same amount of movement speed of the fixing actuation body 44, but a greater power amplification. Accordingly, the fixing bodies 46a or transmission bodies 46u act with a comparatively large force on the fixing abutment contour 52, so that the fixing device 40 can be actuated in the direction of the fixing position F with a correspondingly large force.
  • the fixing actuation body 44 is adjusted further in the direction of the fixing actuation position FB, after the adjusting bevel 46s, the securing contour 46n and then the clamping surface 46k come into actuating or supporting engagement with the fixing bodies 46a in order to press them against the fixing abutment contour 52 or against the fixing abutment contour 52 to support.
  • the fixing bodies 46a are acted upon by the clamping surface 46k in the sense of clamping or clamping with a clamping force or clamping force against the adjusting section 52s, so that the positive-locking elements 41, 42 are clamped or can be clamped against one another.
  • the fixing bodies 46a can be in the region of the actuating section 52e.
  • the adjusting section 52e advantageously forms an insertion section or has an insertion bevel in order to guide the fixing body 46a in the direction of the adjusting section 52s when the fixation actuation body 44 is adjusted starting from the fixation release position FB in the direction of the fixation actuation position FB.
  • the drive body 50 is, for example, a ring body or sleeve body.
  • the drive body 50 is firmly connected to the clutch arm support 13 .
  • sample As the drive body 50 is in a receptacle 14a, which is aligned with the bearing 14 and/or is coaxial, of the coupling arm carrier 13, particularly in the receptacle 14a it is pressed, glued or otherwise firmly held.
  • the drive body 50 has a receptacle 50a, into which the actuating body engages with the guide body 45 .
  • the receptacle 50a has a diameter D52 that is larger than a diameter D53 that the receptacle 50a has in the area of the release abutment contour 53 .
  • a length of the release abutment contour 53 can be greater than in a situation in which the diameter D53 is equal to or greater than the diameter D52.
  • the length of the release abutment contour 53 can therefore be greater, so that an adjustment path that can be implemented with the release drive 47L can also be greater than an adjustment path that could be implemented in the area of the larger diameter D52.
  • the drive body 50 and the actuating body guide body 45 cannot be rotated relative to one another or are non-rotatable in relation to the pivot axis S, so that the fixing bodies 46a and the release bodies 47a, where they are designed as a ball, are not loaded in the sense of a roller bearing or ball bearing.
  • the fixation actuation body 44 forms a fixation component 92.
  • the fixation actuation body 44 or the fixation component 92 is loaded by a spring 48 and thus a spring arrangement 48a in the direction of the fixation actuation position FB.
  • the spring 48 is supported on the one hand on the fixing actuation body 44 or the fixing component 92, for example on an end face 44s of the fixing actuation body 44 or the fixing component 92 extending transversely to the adjustment axis F, and on the other hand on the actuating body guide body 45 by means of a spring Support body 60 from.
  • the spring support body 60 is supported on the actuator body guide body 45 .
  • the spring support body 60 has an annular support part 61 on which the spring 48 is supported.
  • the support part 61 has a passage opening 62 .
  • supporting projections 63 protrude in front of the supporting part 61 .
  • the spring support body 60 has a support projection 63 on opposite sides.
  • the spring supporting body 60 is plate-like, for example.
  • the spring support body 60 is preferably designed as a stamped component and/or a laser component or a component produced by laser cutting.
  • Insertion channels 64 are provided on the actuating body 44 guiding the fixing actuation body 44, through which the support projections 63 can be inserted into holding receptacles 65.
  • the insertion channels 64 have the same angular spacing with respect to the adjustment axis V as the projections 63 Stitzvor.
  • two insertion channels 64 are provided on the actuating body guide body 45 on opposite sides with respect to the adjustment axis V.
  • the insertion channels 64 extend parallel to the pivot axis S or adjustment axis V on a peripheral wall 45u of the actuating body guide body 45.
  • the insertion channels 64 have insertion openings 64a, through which the support projections 63 can be inserted into the insertion channels 64.
  • the insertion channels 64 are open on an outside of the actuating body guide body 45 facing away from the actuating body guide 45a and/or radially outwards with respect to the adjustment axis V, so that the supporting projections 63 are gripped from the outside with respect to the actuating body guide body 45 and in the insertion channels 64 are movable parallel to the adjustment axis F, which is indicated by an arrow DL.
  • Retaining receptacles 65 for the supporting projections 63 are provided on the longitudinal end regions 64b of the insertion channels 64 opposite the insertion openings 64a. The supporting projections 63 can, so to speak, be screwed into the holding receptacles 65 by means of a rotary movement DR.
  • the holding receptacles 65 have recesses into which the projections 63 Stützvor can engage.
  • each holding receptacle 65 is delimited by a side face 66, which is opposite a rear gripping projection 67, with a base 68 of a respective retaining receptacle 65 extending between the side face 66 and the rear gripping projection 67.
  • a respective support projection 63 comes to rest on the floor 68 and is then held in the holding receptacle 65 between the rear engagement projection 67 and the side face 66 so that it cannot rotate with respect to the adjustment axis V, which also corresponds to the direction of force of the spring 48 .
  • the rear gripping projection 67 is between the bottom 68 and the insertion channel 64's arranged.
  • the side surface 66 is seen on a side facing away from the insertion channel 64 side of the holding receptacle 65 before.
  • the fixing actuation body 41 is inserted into the guide channel 45b, for example, through an insertion opening 45e of the guide channel 45b.
  • the supporting projections 63 form, so to speak, holding projections or actuating projections for adjusting the spring-supporting body 60, so that the force required to compress the spring 48 can be applied easily.
  • the spring support body 60 is inserted into the guide channel 45b, for example, along a sliding axis SC, which in the present case is coaxial to the adjustment axis V, with the support projections 63 being guided in the insertion channels 64.
  • the spring support body 60 is rotated in accordance with the arrow DR, so that the support projections 63 reach the holding receptacles 65.
  • the supporting projections 63 can hit the side surface 66 during the rotary actuation according to the arrow DR.
  • the spring support body 60 is reliably held in the holding receptacles 65 by the spring 48 .
  • the spring 48 namely acts on the spring support body 60 and thus the support projections 63 in such a way that they are actuated towards the bases 68 of the holding receptacles 65 .
  • rotational forces acting around the adjustment axis V cannot cause the support projections 63 to disengage from behind with the rear gripping projections 67 either.
  • a drive member 39 is provided to drive the fixation actuation body 44.
  • the drive element 39 is fixedly connected to the drive wheel 37, so that a rotational movement of the drive wheel 37 about an axis of rotation entrains the drive element 39 about the same axis of rotation, for example about the drive axis A4.
  • the drive element 39 has roof edge-like arranged drive contours 39a, which are designed as inclined surfaces and between which a holding contour 39c is located.
  • the drive contours 39a and the holding contour 39c in between are provided on projections 39d, which are tooth-like, for example.
  • the projections 39d project in front of a base body 39e of the drive element 39 parallel to the drive axis A4.
  • the fixing actuation body 44 is connected to a support element 70 by means of a tie rod 49 .
  • the tie rod 49 has a head 49a, which is supported on the support element 70, and a projection 49b, which projects from the head 49a.
  • the projection 49b is rod-like or rod-like and penetrates through a Support base 71 of the support member 70 and protrudes in front of the support base 71 with a fixing portion 49c.
  • the support base 71 has, for example, a channel 71k penetrated by the projection 49b.
  • the fixing actuation body 44 has a channel 44k through which the projection 49b penetrates, with a longitudinal end 49c of the tie rod 49 opposite the head 49a protruding in front of the fixing actuation body 44 .
  • a fastening means 49d for example a nut, a clamping screw, a clamping ring, a snap ring, a retaining ring or the like, is arranged on the longitudinal end 49c, with the fastening means 49d being supported on the fixing actuation body 44, so that the tie rod 49 is tension-resistant with respect to the adjustment axis V with the Fixing actuation body 44 is connected.
  • Latching contours 71r are provided on an inner circumference of the channel 71k, which engage with latching contours 49r of the tie rod 49 when the latter is inserted into the channel 71k.
  • a clamping contour 71f can also be provided, for example a waisted section, in order to ensure that the tie rod 49 in the channel 71k is resistant to tension with respect to the adjustment axis V or the longitudinal axis of the channel 71k, at least during assembly of the hitch to hold.
  • Actuating projections 72 protrude radially outwards from the support base 71 with respect to the adjustment axis V or the longitudinal extent of the support base 71 .
  • Be actuating projections 72 include release drive body 73 on which release drive contours 74 and lying between the release drive contours 74 lowing release-holding contours 74c are arranged, which interact with the drive contours 39a and the holding contour 39c of the drive element 39.
  • Release drive contours 74 are designed as inclined surfaces between which the release holding contour 74c is located. The inclined surfaces are inclined to the adjustment axis V, while the release-holding contour 74c to the adjustment axis V is perpendicular. If the drive contours 39a with the release Drive contours 74 come into engagement, the fixation actuation body 44 is adjusted from the fixation actuation position FB to the fixation release position FF along the adjustment axis V. When the fold contours 39c and 74c are abutted against each other, the fixing operation body 44 is held at the fixing release position FF. In any case, it can be seen that the fold contours 39c and 74c are relatively short in relation to a pivoting angle about the adjustment axis V.
  • the spring 48 acts in the sense of an adjustment of the fixing actuation body 44 in the direction of the fixing actuation position FB, so that the fixing device 40 is acted upon in the direction of the fixing position F.
  • the positive-locking elements 41, 42 could come into engagement with one another, even if the coupling arm carrier 13 assumes intermediate positions between the use position G and the non-use position N.
  • the support element 70 and thus the fixing actuation body 44 have support bodies 75a, 75b on which support contours 76a, 76b are arranged.
  • the support bodies 75a, 75b are arranged radially on the outside with respect to the release drive body 73 and in the present case are advantageously integral with them or firmly connected to them.
  • the support bodies 75a, 75b are in engagement with an abutment contour 86 of an abutment body 80.
  • the abutment body 80 has, for example, a ring body 81 on the outer circumference 82 of which anti-rotation contours 83 are arranged.
  • the abutment body 80 is arranged in such a way that it cannot rotate with respect to the adjustment axis V and, in the present case, is even stationary on the coupling arm carrier 13.
  • the clutch arm carrier 13 or a housing 170 arranged on the hitch arm carrier 13 has a receptacle 13a for the bearing body 80, wherein anti-rotation contours for engagement with the anti-rotation contours 83 are provided on the receptacle 13a.
  • the adjustment axis V of the fixing actuation body 44 is advantageously at the same time a pivot axis about which the fixation actuation body 44 and its support element 70 pivot, this pivot axis being the pivot axis S in the present case.
  • the ring body 81 extends around the actuating body guide body 45, so that the support bodies 75a, 75b, which protrude radially in front of the support element 70 with respect to the pivot axis S, so to speak, with their support contours 76a, 76b facing the abutment contour 86 of the abutment body 80, protrude over the abutment contour 86 of the Abutment body 80 can slide away.
  • the abutment contour 86 extends in a ring around the adjustment axis V.
  • the support contours 76a, 76b include fold sections 77a, 77b, which extend transversely to the adjustment axis V, preferably at right angles transversely, and are provided and designed for support on fold sections 87a, 87b of the abutment contour 86.
  • the fold sections 87a, 87b form fold plateaus, so to speak.
  • one flea of the fold sections 77a, 77b and the fold sections 87a, 87b is even dimensioned such that the fixing actuation body 44 is adjusted beyond the fixing release position FF along the adjustment axis V when the fold sections 77a, 77b are supported on the fold sections 87a, 87b are.
  • the folded sections 87a, 87b extend between locking receptacles 84 of the abutment body 80, which are aligned with guide contours 44f, by means of which the fixing actuation body 44 is linearly guided along the adjustment axis V.
  • the guide contours 44f are, for example, grooves or slots on the actuating body-guiding body 45, into which the actuating projections 72 of the support element 70 or the supporting bodies 75a, 75b of the fixing actuating body 44 engage.
  • Pivoting stops 88a, 88b are provided on the locking receptacles 84, which interact with pivoting stops 78a, 78b of the support contour 76b.
  • the pivoting stops 78a, 78b strike the pivoting stops 88a, 88b, so that the pivoting movement of the coupling arm carrier 13 about the pivot axis S is terminated.
  • the holding sections 87a, 87b are provided on end faces of wall bodies 85a, 85b, which project in front of the ring body 81 with respect to the adjustment axis V.
  • Holding section 87a protrudes further in front of annular body 81 with respect to adjustment axis V than holding section 87B, so that holding section 87a forms a higher plateau, so to speak, for supporting supporting body 75a than holding section 87b for supporting supporting body 75b.
  • the pivoting stops 88a, 88b are provided on the peripheral longitudinal end regions of the wall body 85a and are provided, for example, by narrow side walls of the wall body 85a.
  • the pivot stops 78a, 78b are provided on the support body 75b.
  • the support body 75a can also have pivoting stops 78c on its side flanks, which run parallel to the adjustment axis V or pivoting axis S, which can strike against the pivoting stops 88a, 88b.
  • the pivoting stops 78a, 78b are longer parallel to the pivoting axis S or adjustment axis V than the pivoting stops 78c, which contributes to the fact that the pivoting movement of the coupling arm carrier 13 can be reliably terminated by the pivoting stops 78a, 78b.
  • this measure is optional, as is the measure that the holding section 87a is higher than the holding section 87b due to the wall body 85a projecting further in front of the ring body 81 .
  • Actuating sections 79 are provided, which are designed as inclined surfaces. Also designed as inclined surfaces are actuating sections 89 of the bearing contour 86 that extend between the holding section 87a and a respective locking receptacle 84 .
  • the supporting body 76a and thus the fixing actuating body 44 experiences an actuating force parallel to the pivot axis S when the fixing actuating body 44 is rotated about the pivot axis S by means of the actuating sections 79, 89, ie the actuating sections 79, 89 cause a movement deflection.
  • the fixing actuation body 44 is subjected to an even greater force with a directional component parallel to the movement in the direction of the fixing release position FF, which can be seen in FIG.
  • the positive-locking elements 41, 42 it is also possible, in addition to or as an alternative to the kinematics described above, for the positive-locking elements 41, 42 to slide along one another as a result of a rotary actuation of the coupling arm carrier 13 relative to the vehicle mount 15, and thus to move the coupling arm carrier 13 in the sense of a movement away from the bearing base 18 with a apply linear force component, so that the form-fitting elements 41, 42 are disengaged.
  • actuating sections 89 and 79 can also only serve as guide contours, for example guide bevels.
  • a safety device 90 is used to secure the fixing device 40 in the fixing position F.
  • the safety device 90 includes a bolt 91 between a backup position Sl and an unlocking position ES's at a Linear guide 93, which is arranged on a base body 95 of the safety device 90, along a particular linear displacement path LA is adjustable bar.
  • the latch 91 has a guide section 91a and a head 91b, the head 91b serving as a blocking contour or latch contour.
  • the guide section 91a is, for example, rod-shaped or bar-shaped and engages in a guide receptacle 93a of the linear guide 93 .
  • the bolt 91 is loaded by a spring 94 in the security position Sl. In the securing position S1, the bolt 91 projects into a movement path BW of a fixing component 92 of the fixing device 40.
  • the fixing component 92 comprises, for example, the fixing actuation body 44 and/or the support element 70 arranged on the fixation actuation body 44.
  • the bolt 91 protrudes in the securing position S1 into the movement path BW of an actuation projection 72 of the support element 70.
  • the drive shaft 34 is used to move the bolt 91 into the unlocking position ES.
  • the drive wheels 35 and 36 are arranged directly on the drive shaft 34 and/or in a rotationally fixed manner.
  • the drive wheel 36 forms part of the pivoting drive device 36a and is used to pivot the coupling arm carrier 13 between the position G and the position N when it is not in use.
  • Drive wheel 35 which forms a drive wheel for actuating fixing device 40, is also firmly connected to drive shaft 34, so that fixing drive device 37a, swivel drive device 36a and a drive component for driving bolt 91 or safety device 90 are on a single drive shaft 34 are arranged.
  • a drive contour 96 is arranged on the drive shaft 34 and acts on a transmission element 97 .
  • the transmission element 97 is mounted with a pivot bearing 98 at its one longitudinal end region pivotable about a pivot axis S98 with respect to the base body 95 and is articulated at its other longitudinal end region with a pivot bearing 99 pivotable about a pivot axis S99 on the bolt 91.
  • the drive shaft 34 and in any case the drive contour 96 are arranged between the pivot bearings 98 and 99 and act on a drive surface 97a of the transmission element 97.
  • the transmission element 97 extends in an arc around the drive shaft 34.
  • a cam contour 96b or a projection, for example, is arranged between the depressions 96a.
  • the indentations 96a are designed, for example, as mutually angled surfaces, between which the cam contour or projection 96b is arranged.
  • the bolt 91 can have inclined surfaces 91d on its head 91b.
  • the sloping surfaces 91d can, for example, be designed as chamfers or serve as chamfers.
  • the inclined surfaces 91 d of the bolt 91 can form actuating contours 91c, which can be actuated by the fixing component 92 in order to adjust the bolt 91 into the unlocking position ES. It is possible that the fixing component 92 at a Pivoting movement about the pivot axis S and/or a longitudinal movement pa rallel to the adjustment axis V can actuate the actuating contours 91c in order to adjust the bolt 91 into the unlocking position ES.
  • the fixing device 40 also includes a sensor 100 for monitoring the fixing position F.
  • the sensor 100 includes, for example, a switch 101, in particular a pushbutton switch, which can be actuated by a transmitter 102.
  • the transmitter 102 is mounted, for example, on a guide 109 so that it can move linearly.
  • the transmitter 102 includes an actuating arm 103 which protrudes towards the fixing actuation body 44, in particular the support element 70.
  • the actuating arm 103 has, for example, an arm section 104 which extends in the direction of the adjustment axis V, and an arm section 105 which is arranged on a carriage 106 of the guide 109 and protrudes in front of it.
  • the carriage 106 is preferably loaded by a spring 107 so that the operating arm 103 is loaded in the direction of the fixing operating body 44 .
  • the fixing actuating body 44 When the fixing actuating body 44 is actuated from the fixing position F toward the loosening position L, it actuates the switch 101 via the actuating arm 103 so that the sensor 100 generates a signal indicative of the loosening L position.
  • the signal can be a light signal or an acoustic signal, for example.
  • an arrangement of a sensor for detecting and monitoring the fixing position of a fixing device on the drive side 16a of the trailer hitch 10 represents an invention in its own right.
  • the sensor can be arranged at a distance from fixing device 40, for example close to the electrical components of trailer hitch 10, in particular near drive device 30.
  • a seal 150 is provided between the clutch arm support 13 and the support body 16 or the bearing base 18 .
  • the seal 150 is designed, for example, as a ring seal or is ring-shaped.
  • the seal 150 has a holding portion 151 which is in a receptacle 152, at for example an annular groove of the coupling arm carrier 13 on the receiving coupling arm side 16k engages.
  • a sealing section 153 in the manner of a sealing lip protrudes in front of the holding section 151 .
  • the free end area 154 of the sealing section 153 lies tightly against an outer peripheral contour 155 of the coupling arm carrier 13 which extends around the pivot axis S.
  • a seal 156 which is arranged, for example, between the fuse body 21 and the supporting body 16 is also advantageous.
  • the seal 156 includes, for example, an O-ring.
  • the seal 156 advantageously forms a brake body.
  • a brake is provided between the coupling arm 11, which is pivotable between the use position G and the non-use position N, for example represented or formed by the seal 156, which brakes the pivoting movement between the use position G and the non-use position N.
  • the seal 156 extends around the pivot bearing 17 and forms, for example, a pivot bearing seal.
  • the seal 150 and/or the seal 156 encloses a volume 160 in which the positive-locking elements 41, 42 are arranged.
  • the volume 160 is arranged on the side of the coupling arm 11 or the receiving body 313 and accordingly forms a volume 160 on the coupling arm.
  • the sealing surface 165 extends, for example, between the seals 150 and 156.
  • air trapped in the volume 160 can flow out of the volume 160 past the seal 150, which is indicated schematically by a flow EF in FIG is indicated.
  • Such an embodiment can be provided.
  • the seal 150 always encloses and seals the volume 160 in the release position L and in the fixing position F.
  • the seal 150 advantageously prevents air from flowing from the vicinity of the trailer hitch 11 into the volume 160, so that the coupling arm carrier 13 remains virtually sucked onto the supporting body 16, i. H. the form-fitting elements 41, 42 remain at least partially in engagement with one another. The measure explained below can help here.
  • a through-opening 161 is provided on the supporting body 16 and forms a pressure-equalizing means 162 .
  • air can flow into the volume 160 and out of the volume 160, represented by an arrow DF.
  • the passage opening 161 is arranged on the sealing surface 165 .
  • the passage opening 161 communicates with a second volume 163 which is enclosed by the housing 170 .
  • the Kupplungsarmarme 13 forms, so to speak, a pump element or ei NEN pump body.
  • the clutch arm carrier 13 draws air from the volume 163, so to speak, into the volume 160 on the side of the clutch arm when the clutch arm carrier 13 is moved away from the support body 16.
  • the pressure compensation means 162 for example the passage opening 161, ensures that an air flow between the Vo lumina 160 and 163 is possible.
  • the seal 150 no longer seals the volume 160 in the release position L, so that ambient air escapes from the vicinity of the trailer hitch 11 , for example past the seal 150 , can flow in between the coupling arm carrier 13 and the supporting body 16 .
  • the coupling arm carrier 13 is moved back in the direction of the supporting body 16, ie in the direction of the fixing position F, the volume 160 is enclosed in the seal 150 or sealed off. In this situation, air can then flow through the passage opening 161 from the volume 160 into the volume 163 .
  • the housing 170 has, for example, a flange 171 which is screwed to the supporting body 16 with screws 172 .
  • the housing 170 preferably forms a protective housing which protects the movable components of the trailer hitch 10 which are arranged on the drive side 16a of the supporting body 16 from environmental influences.
  • the housing 170 On the sides facing away from the supporting body 16, the housing 170 has mounting openings 173 and 175 which are closed by covers 174 and 176.
  • the assembly opening 175 is used, for example, to connect the tie rod 49 to the fixing actuation body 44 .
  • the mounting opening 175 is preferably aligned with the adjustment axis V or the pivot axis S.
  • the cover 176 has a pressure compensation means 164, for example an air-permeable membrane, a valve arrangement or the like.
  • a pressure equalization represented by an arrow LF for the volume 163 is thus possible through the pressure equalization means 164 .
  • a pressure relief of the volume 163 can be realized by the pressure compensation means 164.
  • a function or the main function of the pressure equalization means 164 is moisture equalization.
  • the pressure compensation means 162 and/or 164 can be membranes, for example
  • the diaphragm 166 and 167 shown schematically.
  • the diaphragm 166 and 167 shown schematically.
  • the diaphragm 166 and 167 shown schematically.
  • the membranes 166 and 167 are, for example, permeable to air, but inhibit the entry of moisture unidirectionally, ie in one direction, but allow in the opposite direction the passage of moisture.
  • the membranes 166 and 167 thus form, for example, unidirectionally moisture-permeable passage components.
  • the membranes 166 and 167 can thus ensure that little or no moisture penetrates into the volume 163 , but moisture that is already present in the volume 163 can escape.
  • the pressure compensation means 162 can also include a check valve 168 .
  • the check valve 168 is arranged on a flow channel or a passage opening of the support body 16, it being possible for air to flow between the volumes 160 and 163 through the passage opening or the flow channel.
  • a blocking direction SR however, the check valve 168 blocks flow, while in a flow direction DR the check valve 168 lets air through.
  • the arrangement is now such that the blocking direction SR is oriented from the volume 160 to the volume 163, the forward direction DR is reversed.
  • air can flow from the volume 163 into the volume 160 .
  • the air can flow past the seal 150 into the environment, but not into the volume 163 . If, in the release position L, moist and/or dirt-laden air enters the volume 160, it is not pumped into the volume 163, but rather blocked off by the check valve 168, so to speak.
  • the check valve 168 when adjusting the fixing device 40 in the direction of the release position L from the volume 163 so to speak sucked air can flow through the pressure compensation means 164, in particular the membrane 167, in the volume 163.
  • the drive motor 31 and the transmission 32 are preferably arranged in a motor housing 180 separate from the housing 170 .
  • the drive motor 31 and the gear 32 in the housing 170 .
  • the motor housing 180 and the housing 170 are preferably connected to one another in a manner that is impervious to environmental influences.
  • the Ge housing 170 and 180 can also be in one piece or form an overall housing.
  • the trailer coupling 10, 310 preferably has a control unit 29, shown schematically, with which the trailer coupling 10, 310 can be controlled.
  • Control unit 29 is connected to sensor 100, for example.
  • the control unit 29 also controls the drive motor 31 of the drive device 30 .
  • Control unit 29 is preferably connected to an on-board network 403 of vehicle 400, for example via electrical power supply lines and/or using a data connection, in particular a bus connection, in order to receive or send reporting messages from on-board network 403 of vehicle 400 in order to send control commands from On-board network 403 of the vehicle 400 to receive conditions or to send to this.
  • Such a control command can be provided, for example, to control the drive device 30 for adjusting the coupling arm carrier 13 into the use position G or the non-use position N.
  • Control unit 29 has connection contacts or connecting lines for connection to vehicle electrical system 403 .
  • the control unit 29 is preferably arranged in the housing 170 or 180 so that it is protected from environmental influences.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Agricultural Machines (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)

Abstract

L'invention concerne un attelage de remorque pour un véhicule à moteur (400) comportant un bras d'attelage (11) permettant d'accoupler une remorque (AHH) ou un porte-charge pour hayon (HLL), un élément de retenue pour véhicule (15), qui présente une base de support (18) pouvant être fixée ou étant fixée sur le véhicule à moteur (400), base de support sur laquelle un support de bras d'attelage (13), sur lequel est disposé le bras d'attelage (11) ou un corps de réception (312) destiné à loger le bras d'attelage (11) de manière détachable, peut pivoter, entre une position d'utilisation (G) et une position de non utilisation (N), autour d'au moins un axe de pivotement (S), l'attelage de remorque (10) présentant un dispositif de fixation (40) destiné à fixer de manière fixe le bras d'attelage (11) dans la position d'utilisation (G) relativement à la base de support (18), le bras d'attelage (11) étant fixé de manière à se déplacer entre la position d'utilisation (G) et la position de non utilisation (N) dans une position de désolidarisation (L) du dispositif de fixation (40) relativement à la base de support (18), et de manière fixe dans une position de fixation (F) du dispositif de fixation (40) relativement à la base de support (18), l'invention se caractérisant en ce que le support de bras d'attelage (13) est monté sur un côté du bras d'attelage (16k) d'un corps de support (16) de l'élément de retenue pour véhicule (15) et est monté en particulier parallèlement à l'axe de pivotement (S) et/ou linéairement au corps de support (16), de manière à se déplacer en se rapprochant et en s'éloignant du corps de support (16), afin de faire s'engager et se désengager des éléments à complémentarité de forme (41, 42) du dispositif de fixation (40), disposés en particulier sur le corps de support (16) et le support de bras d'attelage (13), un volume (160) situé côté bras d'attelage étant enfermé entre le support de bras d'attelage (13) et le corps de support (16), ledit volume étant augmenté, suite à l'éloignement du support de bras d'attelage (13) du corps de support (16) et réduit, suite au rapprochement du support de bras d'attelage (13) du corps de support (16), un élément de compensation de pression (162), en particulier un orifice de passage (161) étant agencé sur le corps de support (16), par lequel de l'air peut s'écouler dans le volume (160) situé côté bras d'attelage et/ou hors du volume (160) situé côté bras d'attelage.
PCT/EP2022/068806 2021-07-06 2022-07-06 Attelage de remorque doté d'un moyen de compensation de pression WO2023280953A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112022002555.7T DE112022002555A5 (de) 2021-07-06 2022-07-06 Anhängekupplung mit einem Druckausgleichmittel
EP22740870.5A EP4351895A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque doté d'un moyen de compensation de pression

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021117479 2021-07-06
DE102021117479.1 2021-07-06

Publications (1)

Publication Number Publication Date
WO2023280953A1 true WO2023280953A1 (fr) 2023-01-12

Family

ID=82492325

Family Applications (5)

Application Number Title Priority Date Filing Date
PCT/EP2022/068808 WO2023280955A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque à dispositif de fixation
PCT/EP2022/068807 WO2023280954A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque comprenant un corps de support de ressort
PCT/EP2022/068809 WO2023280956A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque avec des contours d'actionnement et des contours de contre-appui
PCT/EP2022/068810 WO2023280957A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque doté d'un élément de support et d'un élément de contre-appui
PCT/EP2022/068806 WO2023280953A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque doté d'un moyen de compensation de pression

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PCT/EP2022/068808 WO2023280955A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque à dispositif de fixation
PCT/EP2022/068807 WO2023280954A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque comprenant un corps de support de ressort
PCT/EP2022/068809 WO2023280956A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque avec des contours d'actionnement et des contours de contre-appui
PCT/EP2022/068810 WO2023280957A1 (fr) 2021-07-06 2022-07-06 Attelage de remorque doté d'un élément de support et d'un élément de contre-appui

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WO2024083865A1 (fr) 2022-10-18 2024-04-25 Westfalia-Automotive Gmbh Attelage de remorque doté d'un support de bras d'attelage et procédé de production dudit attelage de remorque

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DE102009033911A1 (de) * 2009-07-20 2011-01-27 Westfalia-Automotive Gmbh Anhängekupplung
DE102013007114A1 (de) * 2013-04-21 2014-10-23 Westfalia-Automotive Gmbh Anhängekupplung
DE102020131748A1 (de) 2019-11-29 2021-06-02 Westfalia-Automotive Gmbh Anhängekupplung

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DE112022002547A5 (de) 2024-03-07
WO2023280955A1 (fr) 2023-01-12
EP4351897A1 (fr) 2024-04-17
DE112022002556A5 (de) 2024-04-04
WO2023280956A1 (fr) 2023-01-12
WO2023280954A1 (fr) 2023-01-12
EP4355591A1 (fr) 2024-04-24
DE112022002659A5 (de) 2024-03-07
EP4351895A1 (fr) 2024-04-17
EP4355593A1 (fr) 2024-04-24
DE112022002693A5 (de) 2024-03-14
DE112022002555A5 (de) 2024-04-04
WO2023280957A1 (fr) 2023-01-12
EP4351896A1 (fr) 2024-04-17

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