Transport and loading device for a motor vehicle

Abstract

Transport and loading device (10) for a motor vehicle having a loading floor, with a base plate (1) forming at least part of the loading floor and with at least one loading plate (2, 3) for forming an adjustable loading area, wherein the at least one loading plate (2, 3) comes to lie at least partially overlapping on the base plate (1) and at least one loading plate (2, 3) is displaceable relative to the base plate (1) by means of a motorized adjustment drive (5) in the longitudinal direction (L) of the motor vehicle, characterized in that two loading plates (2, 3) are provided for adjusting the loading area, wherein the first loading plate (2) is displaceable by means of a pulling means orCable pull system (4) is electrically adjustable and the second loading plate (3) is mechanically adjustable, wherein the first loading plate (2) is arranged in a basic position or retracted position (7) between the base plate (1) and the second loading plate (3) and the first loading plate (2) and the second loading plate (3) in an extended position (8) essentially form a common loading plane.

Description

[0001] The invention relates to a transport and loading device for a motor vehicle having a loading floor according to the preamble of claim 1.

[0002] Fully loading a car is often difficult. For example, if a parking space prevents loading through the side door, items usually have to be placed as low as possible in the vehicle through the trunk opening while leaning forward. This is especially true when utilizing the additional storage space provided by folding down the rear seat backrests.

[0003] The cargo space of station wagons, in particular, extends far into the interior of the vehicle. This can make it difficult, especially for small or physically weak people, to load the far-flung part of the vehicle's trunk.

[0004] Various loading devices for motor vehicles are known from the state of the art.

[0005] For example, DE 10 2020 208 035 A1 relates to a ramp device for a motor vehicle with a ramp plate that can be moved from a horizontal rest position in the installed position to an extended position inclined to the horizontal in the installed position and axially extended to the rest position. The ramp device has two guide rails for laterally guiding the ramp plate during axial extension into the extended position, with the ramp plate being arranged between the two guide rails. A lifting mechanism is intended to lift the rear ends of the guide rails, in the extension direction of the ramp plate, with the ramp plate being inclined with the guide rails, so that the inclination of the guide rails tilts the ramp plate.

[0006] DE 10 2010 063 819 A1 relates to a motor vehicle with a trunk accessible via a trunk lid and having a loading floor. A loading floor panel has at least two telescopic mechanisms arranged parallel to one another, each having a first slide rail, which are attached to the loading floor panel. A second slide rail is attached to the loading floor of the trunk by fastening means.

[0007] DE 102 23 042 A1 discloses a loading floor and a loading device for a vehicle with a loading floor. The loading floor has a spacer element and a guide slot at a first end region. The spacer element is configured at its lower end to engage the guide slot. A loading edge has a slope for supporting the loading floor at its second end region.

[0008] DE 10 2007 045 603 A1 discloses a loading compartment for a motor vehicle with a loading floor that can be moved along a floor surface fixed to the loading compartment and includes a handle area for manually moving the loading floor. The floor surface fixed to the loading compartment has an edge on at least one side edge against which the loading floor can strike when moved. The handle area of ​​the loading floor is intended to have an edge recess on an edge area facing the edge of the floor surface fixed to the loading compartment, the depth of which should correspond at least to the thickness of at least one finger of an operator's hand.

[0009] DE 102 41 687 A1 relates to a loading floor for a cargo space of a motor vehicle with an extendable loading platform that is laterally delimited by two guide rails fixed to the loading platform, each of which is guided along a guide rail fixed to the vehicle and extending parallel to the longitudinal axis of the motor vehicle. The guide rails are connected to a frame for the loading platform via two front and two rear connecting nodes with transverse panels. A guide means is arranged at each front connecting node, each of which is assigned to one of the guide rails and engages with this guide rail.

[0010] DE 103 15 401 A1 relates to a load compartment floor system with at least a first load compartment floor and a second load compartment floor, which are arranged in the vehicle's longitudinal direction behind the rear seating arrangement of a vehicle. At least the first load compartment floor can be displaced at least partially beyond the loading edge in the vehicle's longitudinal direction. The second load compartment floor can be arranged such that a gap created between the rear seating arrangement and the first load compartment floor is covered in order to provide a continuous loading area for transporting cargo.

[0011] From US 6 516 983 B2 a cargo handling system in vehicles is known, in particular a system for repositioning cargo positioned in a cargo compartment of a vehicle.

[0012] DE 100 12 767 A1 relates to a loading system for the loading space of a passenger vehicle, which is provided with an extendable loading floor and a guide arrangement by means of which the loading floor is mounted so as to be displaceable with respect to the vehicle body.

[0013] US 2001 / 0 036 396 A1 relates to an extendable loading floor for a motor vehicle, which has a guide rail on its underside and a support element at an end facing away from a loading edge.

[0014] DE 10 2004 051 622 A1 relates to a loading floor for the luggage compartment of a vehicle. The loading floor is divided into three parts: a first, movable loading floor element, a second, rear loading floor element, and a third, front loading floor element.

[0015] DE 197 31 324 A1 discloses an extendable loading floor for a vehicle which has at least two rollers on its two side edges.

[0016] The disadvantages of the current technology are the complex mechanics of the loading devices and the extensive modifications required to the vehicle itself to install the known loading devices. Furthermore, the installation of the loading devices with their complex mechanics results in a significant loss of cargo space.

[0017] Based on the disadvantages described above, the object of the invention is to enable reliable, safe, and simple loading of the trunk of a motor vehicle, in particular a passenger vehicle, and to provide a device for this purpose that can be easily retrofitted into a motor vehicle. Furthermore, the loading process of the vehicle is to be supported by enabling the complete loading of the luggage or cargo area of ​​the vehicle, including any folded-down rear seat or the backrests of the rear seats.

[0018] This object is achieved with a transport and loading device for a motor vehicle having a loading floor according to claim 1.

[0019] The invention relates to a transport and loading device, in particular for retrofitting, for a motor vehicle having a loading floor with a base plate forming at least part of the loading floor and with at least one loading plate for forming an adjustable loading area, wherein the at least one loading plate lies at least partially overlapping on the base plate and is displaceable relative to the base plate by means of a motorized adjustment drive in the longitudinal direction of the motor vehicle.

[0020] The base plate can be inserted into the cargo area of ​​the vehicle, for example, through the trunk opening. The base plate is stationary, meaning it cannot be moved relative to the vehicle. Importantly, the device is suitable for retrofitting in a vehicle and can be used in numerous different vehicles with a trunk or loading area. In particular, the device is available aftermarket and is not permanently installed in the vehicle, so the base plate and loading plates can be easily removed.

[0021] The base plate can be adapted to the geometric dimensions of the vehicle's loading floor, for example, almost completely filling it. It is particularly important that the base plate can be retrofitted into the vehicle and easily removed again, especially without any modifications to the vehicle's loading floor. Only an electrical connection may be provided, which can be designed as a plug-in contact, to supply the transport and loading device with electrical energy, for example, from the vehicle's battery.

[0022] The at least one loading plate is arranged in a retracted position or a basic or installed position on the base plate, ie in the use position lying above the base plate. If there are several, for example two, loading plates, ie a first and a second loading plate, the first loading plate can be arranged in a sandwich construction on the base plate and the second loading plate can be arranged on top of the first loading plate. The three plates, base plate, first and second loading plate, can therefore be arranged one above the other or overlapping in the retracted position, with the first loading plate located between the base plate and the second loading plate.

[0023] The base plate and the at least one loading plate form an adjustable loading surface, wherein the at least one loading plate is displaceable relative to the base plate in the longitudinal direction L of the motor vehicle. In the case of two or more loading plates, all of these plates are displaceable.

[0024] In other words, the - stationary - base plate forms the basis of the device, on which at least one, for example two loading plates are arranged lying in a basic position or installation position.

[0025] The loading area can be adjusted by moving the two sliding loading plates relative to the base plate or relative to the other loading plate.

[0026] According to a first advantageous embodiment of the invention, the adjustment drive is arranged on the base plate, in particular the adjustment drive drives a traction means arranged on the base plate.

[0027] The traction means can be designed as a preferably closed, circulating cable pull system, for example similar to that of a window lifter, in particular as a double-strand cable pull system, which is guided via at least one deflection, for example a deflection pulley.

[0028] The traction mechanism or cable pull system can be operatively connected to the adjustment drive, and in this case, at least one driver can be coupled to the cable pull system, which is intended to enable adjustment of the electrically adjustable loading plate. The driver can be coupled to the cable pull system via a recess in the driver, a so-called nipple chamber, into which a nipple pressed onto the cable is suspended. Alternatively, it is also conceivable for the cable to be overmolded with the driver.

[0029] The adjustment drive can, for example, have a motor with pulse width modulation (PWM) control.

[0030] According to an advantageous variant of the invention, a length adjustment device is assigned to the traction means to compensate for an elongation of the traction means that occurs during operation.

[0031] The traction mechanism can provide a translational coupling between the adjustment drive and the driver, which can be adjustable along a guide rail, e.g., a rail. The length adjustment device serves to compensate for any elongation or dilation of the traction mechanism that may occur during operation. If the traction mechanism is designed, for example, as an actuating cable or cable pull system, its inner cable, designed as a stranded cable, is subject to elongation during continuous use due to aging processes and continuous stress. This elongation can amount to several millimeters or even centimeters. Such elongation leads to system slack or cable slack in the power transmission train, which can have adverse effects on the entire adjustment mechanism.

[0032] If the system or cable slack is not compensated, it is initially used up at the beginning of an adjustment movement before an adjustment movement can be transmitted to the driver via the traction mechanism. Any system or cable slack that may occur can be compensated using the length adjustment device, ensuring that the cable pull system is always subjected to the required tension in every conceivable operating position. When a rotary movement initiated by the actuator begins, this can be directly transmitted to a corresponding adjustment movement of the driver.

[0033] When the traction mechanism is designed as an actuating cable or cable pull system with an inner cable guided in an outer tube, the length adjustment device causes a "virtual" extension of the tube surrounding the inner cable, corresponding to the operational elongation of the inner cable. A length adjustment device typically has two components that can be displaced relative to one another in the axial direction, i.e., in the direction of the cable extension, such as a sleeve and an extension guided in a sleeve. Both components are connected to the sleeve or tube of the actuating cable.

[0034] The length adjustment device can be pulled apart, or the extension can be moved axially out of a sleeve, under the action of a spring. If a system slack occurs, for example, due to operational elongation of the inner cable, the two components of the length adjustment device are automatically moved apart by a predetermined amount. By appropriately elongating the hose surrounding the inner cable, the system or cable slack can be compensated for, so that the entire actuating cable is again under the required tension.

[0035] A further development provides that at least one loading plate has extensions, in particular ball heads, for engaging in complementary receptacles on the base plate. The receptacles are designed as drivers driven by the traction means or cable system for adjusting the at least one loading plate in the longitudinal direction of the motor vehicle. The driver is preferably cuboid-shaped as a plastic injection-molded or die-cast part.

[0036] For particularly easy assembly and disassembly of the device, where the individual plates can be inserted separately into the cargo space of the vehicle, the extensions are detachably hooked into the receptacles or carriers, or inserted or plugged in. This allows for easy coupling of the loading plate, which can be adjusted using a traction device, e.g., a cable pull system, to the traction device.

[0037] In an advantageous embodiment of the invention, the base plate has at least one slotted guide, in particular a guide rail, for guiding the loading plate arranged on the base plate between a retracted position and an extended position.

[0038] In the retracted position, also called the basic or installed position, at least one loading plate rests on the base plate and overlaps the base plate almost completely. In the case of multiple loading plates, all plates lie on top of each other in a sandwich construction. In the extended position, if there are multiple loading plates, these loading plates form a common plane, and at least one loading plate, preferably the loading plate adjustable by means of a tensioning device, also lies at least partially overlapping the base plate in this position. In other words, part of the loading plate still overlaps the base plate even in the extended position.

[0039] According to the invention, two loading plates are provided for adjusting the loading area, the first loading plate being electrically adjustable by means of a traction means or cable system and the second loading plate being mechanically adjustable, the first loading plate being arranged in a basic position or retracted position between the base plate and the second loading plate and the first loading plate and the second loading plate essentially forming a common loading level in an extended position.

[0040] In a further development of the invention, the transport and loading device comprises one base plate and two adjustable loading plates, namely the first and second loading plates. Of course, it is also conceivable for both loading plates to be electrically or manually adjustable, or for the second loading plate to be electrically adjustable and the first loading plate to be manually adjustable.

[0041] The first and second loading plates can be jointly adjustable in the extended position, in which they form a common loading area, in particular by means of the traction means or cable pull system.

[0042] The first and second loading plates are connected in such a way that they can adjust their angle of inclination to the ground. This allows for the entire luggage compartment to be loaded step by step.

[0043] In order to realize this joint adjustment of the two plates, in particular in the extended position, in which both plates are arranged one behind the other in the longitudinal direction L of the vehicle and form a common plane, in an advantageous development of the invention at least one rolling element arranged on the second loading plate, in particular in the extended position of the loading plates, can be received in a coupling element arranged on the first loading plate, in particular an angle piece or sheet metal angle, for the joint adjustment of the loading plates.

[0044] In this way, when the first loading plate is electrically adjusted using a cable pull system, the second loading plate is also moved along in the extended position, where the plates are arranged one behind the other. When the second loading plate is on top of the first loading plate, i.e., not in the extended position, it is of course also moved along, but not due to the mechanical coupling between the roller element and the driver, but because it rests on the first loading plate.

[0045] According to a further variant of the invention, the second loading plate is displaceable relative to the first loading plate and the base plate by means of a guide device, in particular the guide device has rolling elements arranged on the second loading plate, in particular rollers or running balls, by means of which the second loading plate is displaceable on the first loading plate and / or on the base plate.

[0046] It is conceivable that at least one rolling element arranged on the second loading plate engages in at least one complementary recess provided on the first loading plate, so that the two loading plates lie substantially flat on one another in the retracted position and slipping of the second loading plate relative to the first loading plate is prevented.

[0047] In a particularly advantageous embodiment of the invention, sensing means for detecting obstacles in the adjustment range of the loading plates are provided on the base plate and / or on at least one loading plate.

[0048] In common vehicles, especially passenger cars, rear seats are provided for additional passengers behind the front seats for the driver and front passenger. The backrests of these rear seats are usually foldable – usually separately. This allows the vehicle's cargo space to be further increased when the rear seat backrests are folded down, allowing items to be placed on the folded backrests for transport.

[0049] The device according to the invention is also suitable for ensuring the use of this additional storage space in the vehicle. It can detect whether obstacles, such as the backrests of the vehicle's rear seats, are in the position for passenger use, i.e., in an upright position or folded down to increase the cargo space.

[0050] The sensing devices can also determine whether only one of the rear seat backrests or all of the rear seats are folded down.

[0051] The sensing means can advantageously comprise a sensing element, in particular at least one metal sheet, arranged at one end of the base plate and / or at least one loading plate, in particular spring-loaded, and partially projecting from the base plate, for sensing an obstacle. The sensing element is in contact with a switching pin and can be used to actuate at least one electrical switching contact for controlling the cable pull system, in particular a microswitch. The sensing means can thus comprise at least one sensing element, a switching pin, and a switching contact.

[0052] If the vehicle's rear seat backrests are folded up, meaning the rear seats can be used as intended by passengers, the vehicle's loading floor in the trunk extends to the back of the rear seats. The loading platforms can then be adjusted up to this point. If the rear seat backrests are folded down—and all backrests before—the loading floor can be extended further into the vehicle's interior.

[0053] The sensing means detect whether the backrests are folded up or down and enable the loading plates to be adjusted accordingly. For this purpose, the sensing element, for example at least one metal sheet, touches the back of the folded-up rear seats; in particular, a sensing element can be assigned to each separately adjustable rear seat section. Preferably, the sensing elements do not touch the switching pin or the switch in this position.

[0054] Microcontroller. The signal "backrest not folded down" is then passed to the control system.

[0055] This tells the control system that the backrests are in the upright position. The control system does not allow the cable system, and thus the first loading plate, to be adjusted beyond the end position, where the first loading plate rests in front of the rear seats.

[0056] This prevents the electrically adjustable charging plate from accidentally moving against the back of the backrest when the device is operated by a user.

[0057] The situation is different when the backrests are folded down. In this case, the sensing elements no longer touch the back of the rear seats and are moved, preferably by a spring, into a position in which they actuate the switching pin. The "backrest folded down" signal is passed on to the control system, which permits adjustment beyond the end position for the "backrests not folded down" state. The electrically adjustable first loading plate can therefore be moved over the folded-down backrests to further increase the loading space and to move objects further into the interior of the vehicle, e.g., away from the loading sill.

[0058] In other words, the folding of the backrests of the rear seats can be sensed, for example, by metal sheets which are arranged on the base plate, in particular in an articulated manner, and are preferably pressed against the backrest by spring force.

[0059] Depending on the position of the backrest, the control electronics of the device can limit the travel path or completely release it.

[0060] In addition to the sensing or detection capability, the sensor element can be designed as a ramp for the rolling elements mounted on the sliding loading plates. This facilitates the movement of the loading plates over the folded rear seats.

[0061] When the backrest of the rear seats is folded down, these sensing elements or plates serve as ramps for the rolling elements mounted on the sliding plates, on which the loading plates are moved over the backrest. This ensures continuous movement of the loading plates, regardless of the transition between the base plate and the backrest. The sensing element, in particular the at least one plate, thus fulfills a dual function: firstly, for sensing obstacles and secondly, as a ramp.

[0062] According to a particularly advantageous embodiment of the invention, it is provided that the base plate has a position sensor designed as a reed switch or Hall sensor, which interacts with a magnet arranged on the second charging plate for detecting the position of the second charging plate, wherein the reed switch detects the extended position in which the first and the second charging plate essentially form a common plane and the reed switch, preferably upon detection of this position, transmits a signal to a control connected to the electrical switching contact or microcontroller.

[0063] Reed switches are incorporated into reed sensors or reed relays. The ferromagnetic switching blades move toward each other when exposed to an external magnetic field. This technology allows for the production of reliable, hermetically sealed switching elements with a small size for fast switching operations compared to conventional relays and contacts.

[0064] A reed switch typically consists of two ferromagnetic reeds that overlap and are spaced slightly apart. When an axial magnetic field acts on the switch, the two reeds move toward each other, and the switch closes.

[0065] In this case, the reed switch or the Hall sensor is used to determine the position of the first charging plate relative to the second. If the first and second charging plates essentially form a common plane, i.e. are arranged one behind the other in the longitudinal direction of the vehicle, the magnetic field of the permanent magnet acts on the switch and the reed switch closes. When this position is detected, a signal is then passed on to the control unit connected to the electrical switching contact or microcontroller. This control unit then prevents the first charging plate, with the second charging plate coupled to it in this position, from being adjusted towards the seats, in particular towards the folded-up backrests of the rear seats.In the event that the first and second charging plates are not on the same level, i.e. arranged one behind the other, and the reed switch is not closed or the Hall sensor detects this position, an adjustment towards the rear seats is still possible and permitted by the control system.

[0066] According to a further advantageous embodiment of the invention, at least one opening, preferably closable by a flap, is provided in the base plate and / or in at least one loading plate for reaching through the base plate. This allows the user to easily access objects located in the motor vehicle below the base plate, i.e., below the device, such as on-board tools.

[0067] The adjustment drive for the cable pull system can be remotely controlled via radio, simplifying operation. Alternatively or additionally, control elements, such as control buttons, can be provided in the area of ​​the tailgate on the vehicle or on the tailgate itself.

[0068] In a further development of the invention, the second, in particular manually displaceable, loading plate can be displaced relative to the first loading plate, which is preferably electrically adjustable by means of a traction mechanism, by means of a guide device, in particular a toothing between the loading plates. For example, at least one toothed rack can be arranged on the first loading plate, on which the second loading plate rolls by means of corresponding gears.

[0069] This rigidly connected, two-sided toothing prevents the upper, second loading plate from tilting, since the angle of rotation must be the same on both sides due to the positive connection between the loading plates.

[0070] It can be provided that the second loading plate has a handle for manually moving the second loading plate, in particular that the handle has a lock which connects the second and the first loading plate to one another in the retracted position in which the first and the second loading plate are arranged one above the other.

[0071] Alternatively, the gears could be moved into a recess in front of the racks. This would allow the two upper plates to rest on top of each other, preventing them from sliding apart.

[0072] It can be provided that the second, manually displaceable charging plate is guided in a corresponding groove of the first charging plate and / or the base plate by means of a pin arranged on this charging plate in order to avoid any possible jamming when manually displacing the second charging plate on the electrically displaceable first charging plate.

[0073] Anti-pinch protection can also be provided to protect the consumer from injury and the drive from overheating. The anti-pinch protection is activated when the vehicle hits the loading edge. To detect an entrapment, the speed and / or motor current of the drive motor are taken into account. If objects become trapped between the loading plate and areas of the vehicle's cargo area, the resistance and thus the electrical current of the motor increase.

[0074] An independent idea of ​​the invention relates to a motor vehicle, in particular a passenger car, with a loading compartment floor and with a transport and loading device as described above.

[0075] Further objects, advantages, features, and possible applications of the present invention will become apparent from the following description of an exemplary embodiment with reference to the drawing. All described and / or illustrated features, individually or in any meaningful combination, constitute the subject matter of the present invention, regardless of their summary in the claims or their reference to one another.

[0076] Some of them show schematically: Fig. 1 the transport and loading device according to the invention with a base plate and with a first and second loading plate in a retracted position or basic position in a perspective view, Fig. 2 the device according to Fig. 1 in a top view, Fig. 3 the device according to Fig. 1 in a perspective view from below, Fig. 4 the device in a further position with upright backrests of the rear seats in a sectional view, Fig. 5 the device in a further position with the backrests of the rear seats folded down in a sectional view, Fig. 6 the device in a representation according to Fig. 5 in another position, Fig. 7 a detailed view of the device in a sectional view, Fig. 8 shows a further illustration of the device according to the invention in the retracted position, Fig. 9 shows a further embodiment of the device with a toothing and Fig. 10 another representation of the device in a perspective view from below.

[0077] In the following figures of the drawing, identical or equivalent components are provided with reference numerals based on an embodiment in order to improve readability.

[0078] Out of Fig. 1 shows a transport and loading device 10 according to the invention for a motor vehicle having a loading floor in a perspective view and in Fig. 2 in a top view. The device 10 has a base plate 1 forming at least part of the loading floor of the motor vehicle, which in this case is introduced into the loading space of the motor vehicle, for example, through the trunk opening. In the present embodiment, the base plate 1 is stationary, i.e., not displaceable relative to the vehicle. Fig. 3 shows the underside 11 of the base plate 1.

[0079] This base plate 1 can be adapted to the geometric dimensions of the vehicle's loading floor, for example, filling it completely. It is particularly important that the base plate 1 can be subsequently inserted into the vehicle and easily removed again, particularly without any modifications to the vehicle's loading floor. Fig. 4, Fig. 5 and Fig. 6 show in a sectional view the device 10 and parts of the trunk of a vehicle with a spare wheel well 27, front seats 29 and rear seats with backrests 28 in different positions.

[0080] Furthermore, only one electrical connection can be provided, which is designed as a plug contact, in order to supply the transport and loading device 10 with electrical energy, for example the vehicle battery.

[0081] The device 10 has, in addition to the base plate 1, at least one loading plate 2, 3, as can be seen from the Fig. 1, 2, 4 and 7 to 9. In the present exemplary embodiment, two loading plates are provided, a first loading plate 2, which is arranged on the base plate 1 in a retracted position 7 or a basic or installed position of the device 10 in the vehicle, and a second loading plate 3, which in this position 7 is located above the first loading plate 2. The three plates, base plate 1, first 2 and second loading plate 3, are thus arranged one above the other or overlapping in the retracted position 7, with the first loading plate 2 being located between the base plate 1 and the second loading plate 3 in the manner of a sandwich construction (cf. Fig. 1, Fig. 7 and Fig. 8).

[0082] The base plate 1 and the at least one loading plate 2, 3 form an adjustable loading surface, wherein in the present embodiment, the first loading plate 2 is displaceable relative to the base plate 1 in the longitudinal direction L of the motor vehicle by means of a motorized adjustment drive 5. In contrast, in the present case, the second loading plate 3 is manually displaceable relative to the base plate 1 and relative to the first loading plate 2.

[0083] In other words, the - stationary - base plate 1 forms the basis of the device 10, on which at least one, in this case two loading plates 2, 3 are arranged lying in a basic position or installation position 7.

[0084] The loading area can be adjusted by moving the two movable loading plates 2, 3 relative to the base plate 1 or relative to the other loading plate 2, 3. For example, starting from the basic or installation position 7, in which all three plates 1, 2 and 3 are arranged one above the other (see Fig. 1, Fig. 7 and Fig. 8) Loading can be carried out by a person placing a first object to be loaded, for example a crate of drinks, through the trunk opening onto the top of the transport and loading device 10, which is in a retracted position 7, i.e., the basic position. In this position 7, the second loading plate 3 is on top in the manner of a sandwich construction, i.e., the object is positioned on the second loading plate 3.

[0085] Then, the second loading plate 3 together with the first object positioned thereon can be easily moved into the rear, ie the more inner area of ​​the trunk of the vehicle, as in particular Fig. 4 and Fig. 6. This is possible manually, by simply moving the second loading plate 3 backwards, for example until it comes to rest behind the first loading plate 2 and forms a common plane with it.

[0086] In this case, the front loading area in the trunk is free, allowing a second object to be loaded there. This is because the first object is located further inside the trunk than the subsequently positioned second object. The second object is thus placed on the first, adjustable loading plate. This is then conceivable, particularly with the rear seat backrests folded down (see Fig. 5 and Fig. 6), in which the loading area can extend even further into the interior of the vehicle, to electrically adjust the first loading plate 2, whereby both the second object arranged thereon and the first object arranged on the second loading plate 3 lying in front of the first loading plate 2 are then moved further into the interior of the trunk or vehicle.

[0087] After the loading plates 2, 3 have been moved, it is conceivable to continue loading the - then free - front area of ​​the loading space or the trunk of the vehicle, since the two loading plates 2, 3 with the objects arranged on them have been moved from the front part of the loading space to the rear part.

[0088] Alternatively, it is conceivable that the first loading plate 2, with the second loading plate 3 resting on it and the object to be loaded, could be electrically moved into the rear area of ​​the trunk. In this case, no manual adjustment is necessary to clear the front loading area in the vehicle's trunk for additional objects to be loaded.

[0089] In the Fig. 1 and 5-7, a protective edge or rail 26 can be seen, which is arranged on the second loading plate 3 in order to prevent objects arranged on the loading plate 3 from accidentally slipping off the loading plate 3.

[0090] As is particularly evident from Fig. 3, the adjustment drive 5 is arranged on the base plate 1 and drives a traction device 4, which is also arranged on the base plate 1. This traction device 4 is designed as a closed, revolving cable pull system, which is guided over deflection pulleys 24, as also shown in Fig. 3.

[0091] The cable pull system 4 is operatively connected to the adjustment drive 5, and in this case, two drivers 22 are coupled to the cable pull system 4, which enable adjustment of the electrically adjustable first charging plate 2. The drivers 22 can be coupled to the cable pull system 4 via a recess in the driver 22, a so-called nipple chamber, into which a nipple pressed onto the cable is suspended. Alternatively, it is also conceivable for the cable to be overmolded with the driver 22.

[0092] In the present embodiment, in particular according to Fig. 7, extensions 21, in particular ball heads, are provided on the first loading plate 2 for engaging in the drivers 22, which are designed as complementary receptacles, on the base plate 1, i.e. the receptacles 22 are designed as drivers driven by the traction means or cable system 4 for adjusting the first loading plate 2 in the longitudinal direction L of the motor vehicle. The driver 22 is preferably cuboid-shaped as a plastic injection-molded or die-cast part.

[0093] For a particularly simple assembly and disassembly of the device 10, in which the individual plates 1, 2 and 3 can be introduced separately into the loading space of the motor vehicle, the extensions 21 are detachably suspended or inserted or plugged into the receptacles or drivers 22.

[0094] As can be seen from the Fig. 1, Fig. 2, Fig. 8 and Fig. As can be seen further in Figure 9, two guide rails 6 designed as a slotted guide are provided on the base plate 1 for guiding the first loading plate 2 arranged on the base plate 1 between the retracted position 7 and an extended position 8, in which the two loading plates 2, 3 have a common plane.

[0095] In total, two loading plates 2, 3 are provided here for adjusting the loading area, wherein the first loading plate 2 is electrically adjustable by means of a traction means or cable system 4 and the second loading plate 3 is mechanically adjustable.

[0096] The first 2 and the second loading plate 3 are in the extended position 8 according to Fig. 4, Fig. 5 and Fig. 6, in which they form a common loading area, can be adjusted together by means of the traction means or cable system 4, since these two loading plates 2, 3 are coupled together in this position.

[0097] In order to realize this joint adjustment of the two plates 2, 3, in particular in the extended position 8, in which both plates 2, 3 are arranged one behind the other in the longitudinal direction L of the vehicle and form a common plane, in the present case Fig. 7 at least one rolling element 12 arranged on the second loading plate 3 in the extended position 8 of the loading plates 2, 3 into at least one coupling element 31 arranged on the first loading plate 2, which can be designed as an angle piece or sheet metal angle, for the joint adjustment of the loading plates 2, 3.

[0098] In this way, when the first loading plate 2 is electrically adjusted by means of the cable pull system 4, the second loading plate 3 is also moved in the extended position 8, in which the loading plates 2, 3 are arranged one behind the other. This applies both to a movement of the plates in the extension direction, i.e., toward the interior of the vehicle, and to a retraction direction, i.e., in the direction back toward the loading edge of the vehicle.

[0099] If the second loading plate 3 is located on the first loading plate 2, i.e. not in the extended position 8, it is of course also taken along, but not because of the mechanical coupling between the rolling element 12 and the coupling element 31, but because it rests on the first loading plate 2.

[0100] As can be seen in particular from the Fig. 5, Fig. 6 and Fig. 7, the second loading plate 3, which in this case is manually displaceable, is displaceable relative to the first loading plate 2 and the base plate 1 by means of a guide device 9, wherein the guide device 9 is formed in this case by rolling elements 12 arranged on the second loading plate 3, for example rollers or running balls, by means of which the second loading plate 3 is displaceable on the first loading plate 2 and / or on the base plate 1.

[0101] In order to ensure that the two loading plates 2, 3, particularly in the retracted position 7 or basic or installed position, in which the three plates 1, 2 and 3 are arranged one above the other, ie are not extended, lie flat on top of each other, in the present embodiment according to Fig. 7 two of the rolling elements 12 arranged on the second loading plate 3 fit into complementary recesses 30 provided on the first loading plate 2, so that the two loading plates 2, 3 lie substantially flat on one another in the retracted position 7 and are not spaced apart from one another in the direction perpendicular to the loading plate surface due to the height of the rolling elements 12 projecting relative to the surface of the second loading plate 3.

[0102] Such recesses 30 do not have to be provided on the first loading plate 2 for all of the rolling elements 12 arranged on the second loading plate 3. Due to the geometric dimensions of the two loading plates 2, 3, it is provided here that some of the rolling elements 12 of the second loading plate 3 do not lie on the surface of the first loading plate 2 in the retracted position 8, and for this reason, no corresponding recess needs to be provided in the first plate 2 to ensure that the second plate 3 rests flat on the first plate 2. These rolling elements 12 then lie outside the first loading plate 2.

[0103] As can be seen in particular from the Fig. 3, Fig. 4, Fig. 5 and Fig. 6, in the present embodiment, sensing means 15 for detecting obstacles in the adjustment range of the loading plates 2, 3 are provided on the base plate 1 and / or on at least one loading plate 2, 3.

[0104] As mentioned, the transport and loading device 10 can be retrofitted into a motor vehicle very easily, without requiring complex modifications to the vehicle. Once the device 10 is installed in the vehicle, the loading area can be adjusted by sliding the loading plates 2, 3 relative to the base plate 1.

[0105] In common vehicles, especially passenger cars, rear seats with backrests 28 for additional passengers are provided behind the front seats for the driver and front passenger. The backrests 28 of the rear seats can usually be folded down – usually separately. This allows the cargo space of the motor vehicle to be further increased when the backrests 28 are folded down, allowing objects to be positioned on the folded backrests 28 for transport.

[0106] The device 10 according to the invention also ensures the use of this additional storage space in the vehicle. In the present exemplary embodiment, the device 10 is suitable for detecting whether the backrests 28 of the rear seats of the vehicle are in the position for use by passengers, i.e., in an upright position (cf. Fig. 4) or folded over (cf. Fig. 5 and Fig. 6) to increase the cargo space.

[0107] The sensing means 15 can also determine whether only one of the backrests 28 of the rear seats or all of the backrests 28 are folded down.

[0108] In particular, according to the Fig. 3-6, the sensing means 15 in this case comprise a sensing element 17 for sensing an obstacle, arranged at one end of the base plate 1, for example, loaded by a spring, and partially projecting from the base plate 1. This sensing element 17 is formed in this case by two metal sheets pivotally mounted on the base plate 1. These metal sheets 17 can come into contact with a switching pin 18, which actuates an electrical switching contact 33 for controlling the cable pull system 4, in particular a microswitch. The sensing means 15 can thus comprise at least one sensing element 17, one switching pin 18, and one switching contact 33.

[0109] If the backrests 28 of the vehicle's rear seats are folded up, i.e., can be used as intended by passengers, the vehicle's loading floor in the trunk extends to the back of the rear seats. Adjustment of the loading plates 2, 3 is then possible up to this area, see. Fig. 4.

[0110] Something different applies when the backrests 28 are folded down, as Fig. 5 and Fig. 6. In this case, the loading floor can be extended further into the interior of the vehicle.

[0111] The sensing means 15 of the device 10 according to the invention detect whether the backrests 28 are folded up or down and enable a corresponding adjustment of the loading plates 2, 3.

[0112] The metal sheets 17 designed as a touch element touch the back of the folded-up backrests 28 in a basic position. In this case, each separately adjustable rear seat section is assigned its own metal sheet 17. As can be seen from Fig. As can be seen in Figure 4, these plates 17, in this case spring-loaded, are positioned slightly upwards and touch the folded-up backrests 28 of the rear seats. In particular, these plates 17 do not touch the switching pin 18 or microcontroller in this position. The control system is thus informed that the backrests 28 are in an upright position. The control system does not permit adjustment of the cable pull system 5, and thus of the first loading plate 2, beyond the end position, in which the first loading plate 2 comes to rest in front of the rear of the rear seats.

[0113] The situation is different if the backrests 28 of the rear seats are folded down (cf. Fig. 5 and Fig. 6). In this case, the sensing elements or metal plates 17 no longer touch the back of the rear seats, but press the switching pin 18 or microcontroller. The "backrest folded" signal is transmitted to the control of the device 10, which allows adjustment beyond the end position for the "backrest not folded" state. The electrically adjustable first loading plate 2 can thus be moved over the folded-down backrests 28 of the rear seats to further expand the loading space and to move objects further into the interior of the vehicle.

[0114] The sensing element or the plates 17 fulfill a dual function in this case. The plates 17 are also designed as ramps 32 for the rolling elements 12 arranged on the movable loading plates 2, 3, as can be seen from Fig. 5 and Fig. 6. When the backrests 28 are folded down, the first loading plate 2 and / or second loading plate 3 can be moved further into the interior of the vehicle, in particular over the folded down backrests 28. In order to ensure easy "driving over" the backrests, two loading ramps 32 are provided, which partially lie over the folded backrests 28.

[0115] As can be seen from the Fig. 3 and Fig. 8, the base plate 1 has a position sensor designed as a reed switch 19, which interacts with a magnet 20 arranged on the second charging plate 3 to detect the position of the second charging plate 3 relative to the first charging plate 2 and / or base plate 1. In particular, the reed switch 19 detects whether the extended position 8 is present, in which the first charging plate 2 and the second charging plate 3 form a common plane. If this state exists, a signal is transmitted to a controller connected to the electrical switching contact or microcontroller 33 upon detection of this position 8. The use of a Hall sensor is also conceivable. The reed switch 19 or Hall sensor can be embedded in the base plate 1 so that it is not visible from below.

[0116] According to an embodiment not shown, at least one opening, preferably closable by means of a flap, for reaching through the base plate 1 can be provided in the base plate 1 and / or in at least one loading plate 2, 3. In this way, even when the device 10 is mounted in the motor vehicle, the user can easily access, for example, on-board tools or other objects located below the base plate 1 in the vehicle.

[0117] Furthermore, it is conceivable for the adjustment drive 5 for the cable pull system 4 to be remotely controlled via radio. For example, a remote control for the adjustment drive 5 can be provided on the vehicle key. Alternatively or additionally, it is also conceivable for the operation of the adjustment drive 5 to be provided in the area of ​​the tailgate for closing the trunk of the vehicle, for example, in the area of ​​a switch for closing the tailgate.

[0118] According to Fig. 9 and Fig. 10 shows an embodiment of the invention in which the second, manually displaceable loading plate 3 is displaceable by means of a guide device, in this case a toothing 13 between the loading plates 2, 3 relative to the first loading plate 2, which is adjustable by means of a traction means 4. The toothing 13 can be formed, for example, by at least one toothed rack 16 arranged on the first loading plate 2, on which the second loading plate 3 rolls by means of corresponding toothed wheels 23, as Fig. 9 and Fig. Show 10.

[0119] The manual movement of the upper, second plate 3 can be performed either in a guided or unguided manner. With unguided movement, the second plate 3 can be positioned in a recess in front of the first plate 2, creating a completely flat loading area. With the rear seats or backrests 28 folded up, this prevents a step in the loading area of ​​the trunk.

[0120] As from Fig. 1, Fig. 2, Fig. 8 and Fig. 10, the second loading plate 3 has a handle 14 for manually moving the second loading plate 3, wherein the handle 14 can have a lock which connects the second loading plate 3 and the first loading plate 2 in the retracted position 7, in which the first loading plate 2 and the second loading plate 3 are arranged overlapping one above the other.

[0121] Another variant according to Fig. 9 and Fig. 10 shows that the second, manually displaceable loading plate 3 is guided in a corresponding groove 34 of the first loading plate 2 and / or the base plate 1 by means of a pin 25 arranged on this loading plate 3.

[0122] According to an embodiment of the invention not shown in the figures, the traction means 4 is assigned a length adjustment device to compensate for an elongation of the traction means 4 that occurs during operation. List of reference symbols 1 base plate 2 Charging plate (first) 3 Charging plate (second) 4 traction device or cable pull system 5 motorized adjustment drive 6 Slide guide (base plate) 7 retracted position or basic position / installation position 8 extended position 9 Guide device on second plate 10 Transport and loading device 11 Bottom of base plate 12 rolling elements on the second plate 13 Gearing 14 Handle on second charging plate 15 sensing agents 16 rack 17 Push button element 18 Switch pin 19 Reed switch / Hall sensor 20 magnets 21 extensions 22 Recess, driver for cable pull 23 gears 24 pulleys 25 pin 26 Protective edge or rail 27 Spare wheel well 28 rear seat backrests 29 Front seat 30 complementary recess for rolling elements 31 Coupling element for rolling element 32 access ramp 33 electrical switching contact or microcontroller 34 grooves L longitudinal direction

Claims

[1] Transport and loading device (10) for a motor vehicle having a loading floor, with a base plate (1) forming at least part of the loading floor and with at least one loading plate (2, 3) for forming an adjustable loading area, wherein the at least one loading plate (2, 3) lies at least partially overlapping on the base plate (1) and at least one loading plate (2, 3) is displaceable relative to the base plate (1) by means of a motorized adjustment drive (5) in the longitudinal direction (L) of the motor vehicle, characterized byin that two loading plates (2, 3) are provided for adjusting the loading area, the first loading plate (2) being electrically adjustable by means of a traction means or cable system (4) and the second loading plate (3) being mechanically adjustable, the first loading plate (2) being arranged in a basic position or retracted position (7) between the base plate (1) and the second loading plate (3) and the first loading plate (2) and the second loading plate (3) essentially forming a common loading plane in an extended position (8). [2] Transport and loading device (10) according to claim 1, characterized by that the adjustment drive (5) is arranged on the base plate (1). [3] Transport and loading device (10) according to claim 2, characterized by that the adjustment drive (5) drives a traction means (4) arranged on the base plate (1). [4] Transport and loading device (10) according to claim 2 or 3, characterized bythat the traction means (4) is designed as a closed, circulating cable pull system which is guided over at least one deflection pulley (24) and is coupled to at least one driver (22) and to the adjustment drive (5). [5] Transport and loading device (10) according to one of claims 2 to 4, characterized by that the traction means (4) is assigned a length adjustment device to compensate for an elongation of the traction means (4) occurring during operation. [6] Transport and loading device (10) according to one of the preceding claims, characterized by that at least one loading plate (2, 3) has extensions (21) for engaging in complementary receptacles (22) on the base plate (1), wherein the receptacles (22) are designed as drivers driven by the traction means or cable system (4) for adjusting the at least one loading plate (2, 3) in the longitudinal direction (L) of the motor vehicle. [7] Transport and loading device (10) according to claim 6, characterized by that the extensions (21) are releasably suspended, inserted or plugged into the receptacles or drivers (22). [8] Transport and loading device (10) according to one of the preceding claims, characterized by that the base plate (1) has at least one guide rail (6) for guiding the loading plate (2, 3) arranged on the base plate (1) between a retracted position (7) and an extended position (8). [9] Transport and loading device (10) according to claim 1, characterized by that the first (2) and second loading plates (3) are jointly adjustable in the extended position in which they form a common loading surface. [10] Transport and loading device (10) according to claim 9, characterized by that the first (2) and second loading plates (3) can be adjusted together in the extended position by means of the pulling means or cable pull system (4). [11] Transport and loading device (10) according to claim 9 or 10, characterized by that at least one rolling element (12) arranged on the second loading plate (3) can be received in at least one coupling element (31) arranged on the first loading plate (2) for the joint adjustment of the loading plates (2, 3). [12] Transport and loading device (10) according to one of the preceding claims, characterized by that the second loading plate (3) is displaceable relative to the first loading plate (2) and the base plate (1) by means of a guide device (9). [13] Transport and loading device (10) according to claim 12, characterized by that the guide device (9) has rolling elements (12) arranged on the second loading plate (3), by means of which the second loading plate (3) can be displaced on the first loading plate (2) and / or on the base plate (1). [14] Transport and loading device (10) according to claim 12 or 13, characterized bythat at least one rolling element (12) arranged on the second loading plate (3) engages in at least one complementary recess (30) provided on the first loading plate (2), so that the two loading plates (2, 3) lie flat on one another in the retracted position (7). [15] Transport and loading device (10) according to one of the preceding claims, characterized by that sensing means (15) for detecting obstacles in the adjustment range of the loading plates (2, 3) are provided on the base plate (1) and / or on at least one loading plate (2, 3). [16] Transport and loading device (10) according to claim 15, characterized bythat the sensing means (15) have a sensing element (17) arranged at one end of the base plate (1) and / or at least one loading plate (2, 3) and partially projecting relative to the base plate (1) for sensing an obstacle, which is in contact with a switching pin (18) and with which at least one electrical switching contact (33) for controlling the cable pull system (4) can be actuated. [17] Transport and loading device (10) according to claim 16, characterized by that the push button element (17) is loaded by a spring. [18] Transport and loading device (10) according to claim 16 or 17, characterized by that the sensing element (17) is designed as a ramp (32) for the rolling elements (12) arranged on the displaceable loading plates (2, 3). [19] Transport and loading device (10) according to one of the preceding claims, characterized bythat the base plate (1) has a position sensor designed as a reed switch or Hall sensor (19), which interacts with a magnet (20) arranged on the second charging plate (3) to detect the position of the second charging plate (3), wherein the reed switch or Hall sensor (19) detects the extended position (8) in which the first (2) and the second (3) charging plate (3) form a common plane and, upon detection of this position (8), transmits a signal to a controller connected to the electrical switching contact or microcontroller (33). [20] Transport and loading device (10) according to one of the preceding claims, characterized by that at least one opening for reaching through the base plate (1) is provided in the base plate (1) and / or in at least one loading plate (2, 3). [21] Transport and loading device (10) according to one of the preceding claims, characterized bythat the adjustment drive (5) for the cable pull system (4) can be remotely controlled by radio. [22] Transport and loading device (10) according to one of the preceding claims, characterized by that the second, in particular manually displaceable loading plate (3) is displaceable relative to the first loading plate (2) by means of a guide device, in particular that at least one toothed rack (16) is arranged on the first loading plate (2), on which the second loading plate (3) rolls by means of corresponding toothed wheels (23). [23] Transport and loading device (10) according to one of the preceding claims, characterized by that the second loading plate (3) has a handle (14) for manually moving the second loading plate (3). [24] Transport and loading device (10) according to claim 23, characterized bythat the handle (14) has a lock which connects the second (3) and the first loading plate (2) to one another in the retracted position (7), in which the first (2) and the second (3) loading plate are arranged one above the other. [25] Transport and loading device (10) according to one of the preceding claims, characterized by that the second, manually displaceable loading plate (3) is guided in a corresponding groove (34) of the first loading plate (2) and / or the base plate (1) by means of a pin (25) arranged on this loading plate (3). [26] Motor vehicle with a loading compartment floor and with a transport and loading device (10) according to one of the preceding claims.

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