Rear load carrier

Abstract

Rear load carrier, in particular bicycle carrier for mounting on the trunk of a motor vehicle, comprising a first support beam (1) and a second support beam (2), wherein the first support beam and the second support beam are pivotally connected to each other and their main pivot axis (OO) extends perpendicular to a first extension direction (x1) defined by the first support beam and to a second extension direction (x2) defined by the second support beam, wherein the first support beam and the second support beam are connected to each other via a pivot assembly, such that the angle enclosed between the first and the second extension direction is adjustable and their relative position can be fixed, characterized in that the pivot assembly comprises a connecting device (3) and a limiting device (4),wherein the first support beam (1) and the second support beam (2) are connected to each other via the connecting device (3) by three pivot points (A, B, C) which, in the operating state of the rear load carrier, are arranged in a triangular shape in a plane perpendicular to the main pivot axis (OO), wherein at least one of the pivot points (B) is a movable pivot point which is displaceable relative to the first support beam (1) and / or to the second support beam (2), and wherein the limiting device (4) is designed such that it can be actuated, preferably by spring action, in order to lock the movable pivot point.

Description

TECHNICAL AREA The present invention relates to the field of attachment devices that can be coupled or attached to vehicles, specifically a rear load carrier, in particular a bicycle carrier for mounting on the trunk of a motor vehicle. STATE OF THE ART With rising living standards, many families often take a lot of luggage and / or sports equipment, such as bicycles, on self-drive trips or when participating in sports and leisure activities. Due to limited space inside a vehicle or in the trunk, bicycles or parts of the luggage can usually only be attached to the rear of the vehicle. Currently, many products are available on the market, such as vehicle-mounted bicycle carriers, which are suitable for external mounting on the car trunk, for example. Among commercially available vehicle-mounted bicycle carriers, the support angle and external contour of most carriers cannot be adjusted. Therefore, they are only suitable for their corresponding vehicle type. For example, the bicycle carrier designs suitable for hatchback, sedan, and SUV models differ considerably and are not universally applicable. Addressing this problem, Chinese utility model patent CN116729266A discloses a quickly mountable and dismountable, foldable, and stowable vehicle-mounted trunk bicycle carrier to solve the issues of quick folding and stowing, as well as adjustable support angle, in vehicle-mounted bicycle carriers.For such foldable or extendable carrier products, one of the core requirements is that the carrier, when unfolded to carry heavy loads (such as a bicycle), must possess sufficient structural rigidity and stability to withstand the vibrations and inertial shocks generated during travel. In this context, CN116729266A theoretically provides a solution for adapting to various rear shapes, but it does not address the specific structural design and function of the joint assembly. Even less does it provide practically implementable technical measures for the aforementioned core requirement, such as the necessary locking and positioning device.It is merely mentioned: “The connecting element 21 is provided with a strip-shaped mounting hole 263 for the third bolt 262, whereby the third bolt 262 can move within or be fastened in the strip-shaped mounting hole 263. For example, the other end of the third bolt 262 is provided with a thread which, in conjunction with a nut, secures the third bolt.” Accordingly, only a (small-area) frictional connection can actually be established between the bolt and the strip-shaped hole. There are no robust, rigid, or positive-locking locking measures for the bolt's degree of movement along the strip-shaped hole. This type of fixation loosens very easily under shocks, vibrations, or impacts. In current technology, such foldable or extendable support products typically rely on insertion pins, threaded bolts, or snap mechanisms for locking after unfolding. However, these locking methods also have significant drawbacks: Insertion pins or snap connections can develop play due to wear over time, leading to deformation or wobbling of the support under load and making a secure lock impossible. While the use of threaded bolts for locking is stable, it is cumbersome to handle, as a tool is required for tightening and loosening, which significantly impairs user-friendliness and does not meet the demands of modern users for quick assembly and disassembly.Even more crucially, both with snap-fit ​​connections that have play and with threaded bolts that are not fully tightened, the structural joint can become an unstable "point of movement" after the carrier is loaded. Under the combined effect of continuous vehicle vibrations and the load, this instability can steadily worsen. This not only leads to the transported bicycle wobbling and wear on the vehicle and the carrier, but also, in the long run, to damage to the connecting elements due to concentrated fatigue stress. Furthermore, there is even a safety risk that the bicycle could suddenly fall off while driving. REVELATION OF THE INVENTION Therefore, the present invention is based on the objective of providing a rear load carrier, in particular a bicycle carrier for mounting on the trunk of a motor vehicle, in order to at least partially overcome the disadvantages in the prior art. According to the invention, the problem is solved by the rear load carrier according to independent claim 1. The individual dependent claims further propose some preferred or advantageous embodiments of the present invention. Compared to the prior art, the technical solution according to the present invention is characterized by at least the following advantageous technical effects: 1. Due to the overall concept of the joint assembly according to the present invention, the rear load carrier can not only be adaptively adjusted to adapt to different rear shapes, but its load-bearing capacity and the reliability of the fixation can also be significantly improved. In particular, the locking unit according to the present invention is designed according to the principle of positive locking and has excellent connection stability and positioning reliability. 2. In the limiting device / locking unit according to the present invention, the individual locking pin can be spring-loaded and automatically engaged with the slide.The entire assembly, disassembly, and adjustment process of the rear load carrier can also be conveniently performed by a single person using only their bare hands, thus saving personnel and material resources. 3. According to an advantageous embodiment of the present invention, suitable position marking measures are provided. During the adjustment and locking process of the rear load carrier's position / shape, the individual locking pin and the respective locking hole can be easily, intuitively, accurately, and reliably aligned with each other. This facilitates rapid assembly, adjustment, and disassembly and significantly improves user-friendliness and ease of use. BRIEF DESCRIPTION OF THE DRAWINGS The drawings show exemplary embodiments of the present invention. The embodiments and drawings disclosed herein are to be considered illustrative and not limiting. It should also be noted that, for better understanding of the representation in the drawings, some structural details are not drawn to scale. In these drawings: Fig. 1 shows a schematic representation of the operating state of a rear load carrier according to an embodiment of the present invention; Fig. 2 shows an exploded view of the main structural components of the rear load carrier according to an embodiment of the present invention, which in particular shows the individual parts of a joint assembly and their assembly relationship; Fig. 3 shows an exploded view based on the embodiment shown in Fig. 2, which clearly shows the assembly connection and the associated structural configuration of a connecting device (in particular its slide); Fig.4 an exploded view based on the embodiment shown in Fig. 2, which clearly shows the assembly connection and the associated structural configuration of a limiting device; Fig. 5 a schematic representation of the actual state of use of the rear load carrier of the present invention, which serves by way of example as a bicycle carrier to be mounted on the car trunk; Fig. 6 a schematic representation of the ready state of the rear load carrier according to an embodiment of the present invention, wherein the rear load carrier has a flat structure after folding; Fig. 7 an exploded view of the main structural components of the limiting device according to an embodiment of the present invention; Fig. 8 a schematic representation of a working state of the in Fig.Figure 7 shows a limiting device in which working state can correspond to the operating state of the rear load carrier, with a locking pin now extended and in its first operating position; Figure 9 shows a schematic representation of another working state of the limiting device shown in Figure 7, which working state can correspond to the setting state of the rear load carrier, with the locking pin now retracted and in its second operating position; Figure 10 shows a schematic representation of the corresponding actuation of an actuating element to achieve and maintain the working states shown in Figures 8 and 9. DETAILED DESCRIPTION OF THE EXECUTION FORMS The following section explains the technical solutions of the embodiments of the invention with reference to the accompanying drawings. It is understood that the described embodiments relate only to some of the embodiments of the present invention, rather than all embodiments. All other embodiments that could be obtained by a person skilled in the art in this field from the disclosed embodiments of the present invention without inventive steps are also within the scope of protection of the present application. The terms "first," "second," etc., in the description and claims of the present application serve to distinguish between different subject matter rather than to describe a specific sequence. Furthermore, the terms "comprise," "comprising," and their variants are intended to be non-exclusive.A process, procedure, system, product or plant which, for example, comprises a series of steps or units, is not limited to the listed steps or units and may optionally include other steps or units that are not specified or that such process, procedure, product or plant itself possesses. It is understood by those skilled in the art that in the description and claims of this application, directional or positional relationships indicated by terms such as "longitudinal," "transverse," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," etc., are based on the representation in the respective drawing, solely to describe the present invention and, where necessary, to simplify the description. In other words, these terms neither implicitly nor explicitly refer to the positioning, configuration, and operation of the device, mechanism, structure, or element in question in a predetermined position, and therefore the aforementioned terms should in no way be understood as limiting the present invention. The term "exemplar embodiment" used herein should be noted to indicate that certain features, structures, or properties described with reference to the respective exemplary embodiment may be included in at least one embodiment of the present invention. The term, appearing at different points in the description, does not necessarily refer to one and the same exemplary embodiment. Nor should it be understood to mean an independent or alternative exemplary embodiment that contradicts other exemplary embodiments. It is understood, both implicitly and explicitly, by those skilled in the art that the exemplary embodiments described herein can be combined with other exemplary embodiments. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meanings as generally understood by average professionals in the field and may be interpreted specifically in the context of the relevant technical description. The present invention will now be explained in more detail with reference to the accompanying drawing and exemplary embodiments. As shown in the drawings, particularly in Figures 1 to 2 and Figure 5, the present invention provides a rear load carrier, especially a bicycle carrier, for mounting on the trunk of a motor vehicle. It comprises a first support support 1 and a second support support 2. The first support support and the second support support are pivotally connected to each other (at a main pivot point A, see Figure 1) and their main pivot axis OO runs perpendicular to a first extension direction x1 defined by the first support support and to a second extension direction x2 defined by the second support support. The first support support and the second support support are connected to each other via a pivot assembly, so that the angle between the first and second extension directions is adjustable and their relative position (at least in the operating state of the rear load carrier) can be maintained. According to the invention, the joint assembly comprises a connecting device 3 and a limiting device 4. The first support beam 1 and the second support beam 2 are connected to each other via the connecting device 3 by three joint points A, B, C, which, in the operating state of the rear load carrier, are arranged in a triangular shape in a plane perpendicular to the main joint axis OO. At least one of the joint points B represents a movable pivot point that is displaceable relative to the first support beam 1 and / or the second support beam 2. The limiting device 4 is designed such that it can be actuated, preferably by means of spring action, to lock the movable pivot point. That is, the movement of the movable pivot point can be prevented so that it is fixedly positioned relative to the first support beam 1 and / or the second support beam 2. According to a specific embodiment of the present invention, the connecting device 3 comprises: a housing 31 that is rigidly connected to the first support beam 1; a slide 32 that is slidable in the housing along the first extension direction x1; a connecting rod 33 that is pivotally connected at a first end to the slide at a first joint point B (see Fig. 1) and at a second end to the second support beam 2 at a second joint point C (see Fig. 1). A first joint axis, corresponding to the first joint point, and a second joint axis, corresponding to the second joint point, each run parallel to the main joint axis OO. Thus, both the first joint point and the second joint point lie outside the main joint axis OO of the first and second support beams, respectively.This allows these three joint points, namely the main joint point A, the first joint point B, and the second joint point C, to be arranged in a triangular configuration. When the first and second support beams rotate relative to their main joint axis, the second joint point C remains stationary in the second extension direction x2, while the connecting rod 33 sets the first joint point B in motion along the first extension direction x1. According to a specific embodiment of the present invention, the limiting device 4 comprises: an adaptive mounting section 41, which is rigidly connected to the housing 31 of the connecting device 3 or is formed integrally with the housing; a locking unit 42, which has a preferably spring-loaded, extendable and retractable locking pin 4211, wherein the locking pin is extended in a first operating position until it penetrates the housing 31 and engages both the adaptive mounting section 41 and the slide 32 within the housing, and is retracted in a second operating position and detached from the slide 32. According to a specific embodiment of the present invention, as shown in the drawings, particularly in conjunction with Fig. 7 and Fig. 1 to Fig. 3, the locking unit 42 is further characterized by the following features:As shown in Figure 2, the limiting device 4 can comprise the following: an adaptive mounting section 41 designed as a flange plate, which is fixedly connected to the housing 31 and has a channel 411 extending transversely into the housing 31 to the first extension direction x1; and a locking unit 42 with an extendable and retractable locking pin 4211. In a first operating position, one end of the locking pin projects through the channel 411 of the flange plate into the housing 31 and can be engaged by the slide 32 to position and lock the slide relative to the housing. This allows the relative position of the first extension direction (corresponding to the first support beam) and the second extension direction (corresponding to the second support beam) to be maintained securely.In a second operating position, this end of the locking pin is retracted and detached from the slide 32 to release the slide so that it can move along the first extension direction. This allows the angle enclosed by the first extension direction (corresponding to the first support beam) and the second extension direction (corresponding to the second support beam) to be adjusted. It should be noted that formulations such as "along a direction", "parallel to a direction" or "in a direction" merely indicate the direction of extension of the object in question and do not represent a restriction of its position. According to a specific embodiment of the present invention, the slide 32 is provided with at least two locking holes 322, which are spaced apart and arranged one behind the other in the first extension direction x1 on a side of the first joint point B that is far removed from the main pivot axis OO. In the first operating position, the locking pin 4211 is engaged with the slide 32 by insertion into one of the locking holes 322. As described above, the slide is provided with at least two locking holes 322. These locking holes are spaced apart from one another in the first extension direction x1 (or parallel to this direction), their distances to the first pivot point (B) being different. Each hole position can correspond to a specific locking position of the first pivot point (B) (the movable pivot point). When the free end of the locking pin is inserted into one of the locking holes to position and lock the first pivot point (namely the slide 32) relative to the housing 31 (namely relative to the first support beam 1), the angle enclosed by the first extension direction x1 and the second extension direction x2 (i.e., ∠BAC in Fig. 1) is thereby fixed to a specific value.This means that the relative position of the first support beam 1 and the second support beam 2 can be locked, thereby forming a stable triangular support structure between the first support beam 1 and the second support beam 2. In this context, it is advantageous that at least two position markings are provided on the first support beam 1 or on the housing 31 in an area visible in the operating state of the rear load carrier, preferably near the position of the first pivot point B, each serving to indicate a locking position of the first pivot point B. The position markings and the relative positions of the locking holes 322 in the first extension direction x1 are uniquely assigned to each other. The position markings can be engraved or painted as scale lines or points on the surface of the housing or the first support bracket. Thus, during the adjustment process of the angle between the first and second extension directions, i.e., during the adjustment of the relative position between the first support bracket 1 and the second support bracket 2, the user can determine, by observing the position that the first pivot point B (the movable pivot point) reaches during its movement, whether the slide 32 has moved into the desired position within the housing 31. Subsequently, the limiting device 4 or its locking unit 42 can be actuated.For example, in practical use of the rear load carrier, if the relative position of the first support beam 1 and the second support beam 2 needs to be set to a specific position (corresponding to a specific angle between the first and second extension directions), a relative rotation between the first support beam 1 and the second support beam 2 can be performed with the locking pin retracted and the slide released. The slide 32, and thus the first pivot point B, moves along with it. As soon as it is observed that the first pivot point has reached the corresponding position mark, it can be determined that the slide has also reached the corresponding insertion position. Now the locking pin 4211 can be actuated to extend it and insert it precisely into the corresponding, matching locking hole 322 on the slide 32.This positions and locks the slide relative to the housing, thus firmly maintaining the relative position of the first and second support beams in the desired orientation. In this way, the correct alignment and engagement between the locking pin and the slide can be easily checked during practical use, significantly improving operability. This is particularly important when the slide and / or the locking pin, as well as its movement, are concealed within other structural components and difficult to see. According to a specific embodiment of the present invention, the housing 31 of the connecting device 3 is, on the one hand, rigidly connected to the first support bracket 1 via threaded bolts F1, F2 or screws, and on the other hand, pivotally connected to the second support bracket 2 via a main bolt PP. Thus, the first support bracket 1 is actually pivotally connected to the second support bracket 2 via the housing 31 rigidly connected to it, as can be seen in particular in Figs. 1, 2, 3 to 4. Regarding the design of the housing 31, as shown in Figs. 1, 2, 3 to 4, a specific embodiment of the present invention provides that the housing 31 can be designed or provided as a molded part with a U-shaped cross-section, preferably a bent molded part made of sheet metal, which has a longitudinally extending base and side plates formed along both sides of the base. In the assembled state, the longitudinal direction of the molded part coincides with the first extension direction x1 of the first support beam 1, and the molded part engages the first support beam 1 with its two side plates from both sides of its structural body, with a receiving and movement space for the slide 32 being formed between the base of the molded part and the base surface of the structural body of the first support beam 1. More specifically, regarding the assembly connection of the housing 31 and its structural configuration, particularly as shown in Fig. 1, the molded part of the housing 31 is provided on at least one of its side plates with two longitudinally spaced through holes that are aligned with corresponding through holes or threaded holes provided on the first support bracket 1 in order to bolt the housing 31 to the first support bracket 1. The molded part of the housing 31 forms an end-connection tab on at least one of its side plates, which is provided with a mounting hole for the main bolt PP. The main bolt is guided through the mounting hole in the transverse direction of the housing and then inserted into a corresponding main bore hole provided on the second support bracket 2.The main bolt and the main borehole rotate together to form a main pivot point A, which corresponds to the main pivot axis OO of the first and second support beams. Preferably, and particularly as shown in Fig. 2, two longitudinally spaced through holes are provided on each of the two side plates of the housing 31, with the through holes on each side plate being arranged in pairs opposite each other (in the transverse direction). This allows two corresponding threaded bolts F1, F2 or screws to be inserted through the opposing through holes in the housing 31 and through correspondingly provided through holes or threaded holes in the first support bracket 1, in order to bolt the housing to the first support bracket. Furthermore, the molded part of the housing 31 is provided on at least one of its side plates with a longitudinally extending guide slot 311. Preferably, a longitudinally extending guide slot is provided on each of the two side plates, with the two guide slots being opposite each other (in the transverse direction). Regarding the mounting connection of the slide 32 and its structural configuration, as shown in Figs. 1, 2, 3 to 4, and in particular in Fig. 3, a specific embodiment of the present invention provides that the first end of the connecting rod 33 is pivotally connected to the slide 32 via a first bolt P1. The first bolt is guided transversely through the guide slot 311 of the housing 31 and then inserted into a corresponding first bore 321 provided in the slide. The first bolt and the first bore interact rotatably to form the first pivot point B. The first bolt slidably engages with the guide slot to guide the slide in its movement within the housing along the first extension direction x1 and thereby limit the path of movement of the first pivot point B. According to a specific embodiment of the present invention, the second end of the connecting rod 33 is pivotally connected to the second support bracket 2 via a second bolt P2. The second bolt is inserted into a corresponding second bore hole provided in the second support bracket 2, and the second bolt and the second bore hole rotate together to form the second pivot point C. It is preferred to provide two connecting rods 33 made of sheet metal, each arranged on the outer side of the respective side plates of the housing 31 and each provided with a mounting hole at both ends. Thus, a corresponding bolt (i.e., the first bolt mentioned above) can be guided through a mounting hole on one connecting rod, through the opposite guide slot on the housing, and through the corresponding first bore hole provided on the slide (here designed as a through hole), and through the mounting hole on the other connecting rod to pivotally connect the first end of the connecting rod to the slide at the first pivot point B (and thus form a movable pivot point). Accordingly, another bolt (i.e.,the aforementioned second bolt) is guided through a mounting hole on a connecting rod, through the corresponding second borehole provided on the second support beam (here designed as a through hole) and through the mounting hole on the other connecting rod in order to articulate the second end of the connecting rod to the second support beam at the second joint point C (and thus form a fixed joint point). According to a specific embodiment of the present invention, as shown in Figs. 1, 2, 3 to 4, an end-connection tab can be formed on each of the two side plates of the housing 31, with the main bolt mounting holes on the two end-connection tabs being opposite each other (in the transverse direction). This allows a corresponding bolt (i.e., the aforementioned main bolt) to be guided through the opposite mounting hole of the housing and through the corresponding main bore hole (here designed as a through-hole) provided on the second support bracket, in order to pivotally connect the housing to the second support bracket at the main pivot point A (and thus form a fixed pivot point). According to a specific embodiment of the present invention, as shown in Figs. 1, 2, 3, 4, 5 to 6, the first support beam 1 and the second support beam 2 are each designed as frames with a U-shaped structure. The U-shaped structure has two parallel legs and a base connecting these two legs. The two legs of the first support beam extend along the first direction x1, and the two legs of the second support beam extend along the second direction x2. The legs of the first support beam and the legs of the second support beam are connected to each other in pairs via the hinge assembly. In this context, it is advantageous that the adaptive mounting section 41 is designed as a flange plate and the locking unit 42 is designed as a rod-shaped component extending between the two legs of the first support beam 1. The two ends of the rod-shaped component are each detachably attached to the housing 31 of the connecting device 3 via the flange plate. In this case, it is advantageous that, as shown in Figs. 7, 8, 9 to 10, and in particular Fig. 7, the locking unit 42 can comprise the following: an operating element 421 comprising two locking pins 4211; a support element 422 comprising a sleeve 4221 and a separating element 4222 provided in the middle segment of the sleeve, wherein two receiving chambers separated from each other by the separating element are formed in the sleeve; and a spring element 423 comprising two compression springs S. One of the locking pins and one of the compression springs are arranged on each side of the separating element 4222 in the individual receiving chamber of the sleeve 4221. The individual locking pin 4211 can move away from or towards the separating element 4222 along the longitudinal axis of the sleeve in the respective receiving chamber.In the pre-tensioned state, the individual compression spring is supported at one end on the respective locking pin 4211 or on a structure firmly connected to it, and at the other end on the separating element 4222. According to this embodiment, the locking pins 4211 are each provided with an actuating element 4212, the individual actuating element being rigidly connected to the corresponding locking pin. The individual actuating element can be designed as an actuating plate or an actuating rod. Furthermore, the wall of the sleeve 4221 is provided with a guide slot 4221-1 extending along its longitudinal axis. The actuating elements 4212 project beyond the wall of the sleeve in the transverse direction and each have a guide segment that slidably interacts with the guide slot in order to guide the actuating elements in their movement together with the respective locking pins along the longitudinal axis of the sleeve. Accordingly, as shown in Fig. 7, the wall of the sleeve 4221 is provided with the guide slot 4221-1 extending along its longitudinal axis. The individual actuating element 4212 projects transversely beyond the wall of the sleeve (thus forming a user-friendly handle) and has a structural segment (i.e., the guide segment) that slidably interacts with the guide slot. This allows the individual actuating element, together with the respective locking pin, to be moved with low friction along the longitudinal axis of the sleeve. According to the illustrated embodiment, the individual actuating element is designed as an actuating plate (comprising a left and a right actuating plate) and is suitable as an operating handle. According to this embodiment, the wall of the sleeve 4221 is provided with a recess 4221-2 into which the guide segment of the individual actuating element 4212 can engage. The recess is connected to the guide slot 4221-1 in the transverse direction and extends circumferentially around the sleeve. The distance between the recess and a sleeve end, in the direction of the sleeve's longitudinal axis, corresponds to the distance between the guide segment of the individual actuating element 4212 and the sleeve end when the locking pin 4211 is in the second operating position. The operation and function of the limiting device 4 and its locking unit 42 are explained in more detail below: Figures 8 and 9 show two operating states of the limiting device 4 / locking unit 42 shown in Figure 7. The operating state shown in Figure 8 can correspond to the operating state of the rear load carrier, with the locking pins 4211 now extended and in their first operating position. The operating state shown in Figure 9 can correspond to the adjusted state of the rear load carrier, with the locking pins 4211 now retracted and in their second operating position. Figure 10 illustrates the operating procedure of the actuating elements 4212 (designed as actuating plates in this embodiment) for achieving and maintaining the operating states shown in Figures 8 and 9. As shown, this essentially comprises two movements: a translational movement and a rotational movement. Specifically, by overcoming the force of the compression springs, the two actuating elements can be operated in such a way that they move towards the separating element 4222 (translational movement). Accordingly, the two locking pins move synchronously towards the separating element 4222. In this way, the process of retracting the locking pins (from the two sleeve ends) can be achieved at least up to the second operating position. During this movement, the guide segment of the individual actuating element, guided in the guide slot of the sleeve, slides along it. As described above, the wall of the sleeve 4221 is provided with a recess into which the guide segment of the individual actuating element 4212 can engage. The recess is connected to the guide slot in the transverse direction and extends circumferentially around the sleeve. In the direction of the sleeve's longitudinal axis, the distance between the recess and a sleeve end corresponds to the distance between the guide segment of the individual actuating element 4212 and the sleeve end when the locking pin 4211 is in the second operating position. Therefore, when the individual actuating element is operated such that the respective locking pin is fully retracted and in the second operating position, the guide segment of the individual actuating element has moved precisely to the position of the recess along the guide slot.Now, by rotating the individual actuating element circumferentially (rotational movement), its guide segment can be engaged in the recess. This blocks or locks the movement of the individual actuating element (and the respective locking pin) along the longitudinal axis of the sleeve. In this case, the fixed relative position between the first support bracket 1 and the second support bracket 2 is released. The two support brackets can rotate relative to each other to adjust the angle enclosed by the first extension direction (corresponding to the first support bracket) and the second extension direction (corresponding to the second support bracket) to the desired state, or to fold them together when stacked on top of each other.Once the relative position of the first support bracket 1 and the second support bracket 2 is set to the desired position and the two support brackets are to be fixed, it is sufficient to simply rotate the individual actuating element back in the opposite circumferential direction. This releases its guide segment from the recess and allows it to re-enter the guide slot. The individual actuating element (and the respective locking pin) can then automatically move away from the separating element along the guide slot under the influence of the respective compression spring, so that the respective locking pin extends from the respective sleeve end until it enters the corresponding locking hole of the slide. According to this embodiment of the limiting device 4 and its locking unit 42, it is advantageous that a guide plate 4221a is attached to each of the two end segments of the sleeve 4221. As shown in Fig. 9, this guide plate has a central hole for guiding the respective locking pin through it during assembly. This central hole can provide guidance and support for the respective locking pin, thus helping to ensure its precise positioning and stable movement. According to this embodiment, it is advantageous that the wall of the sleeve 4221 in its central segment is provided with an insertion opening 4221-3 for the separating element 4222, which is connected on both sides to the guide slot 4221-1. The separating element is firmly connected to the sleeve in the insertion opening. Building on the design described above, the insertion opening also serves as a process opening during the assembly of the locking unit. The locking pins and compression springs can first be conveniently inserted into the sleeve through this opening. The separating element is then inserted into the insertion opening to close this insertion / process opening. Finally, the separating element can be fixed in place by means of a fastening element inserted from the opposite side of the sleeve.For example, the separating element can be designed as a plastic plug, and a screw (preferably a pointed self-drilling screw) can be inserted through a through hole on the opposite side of the sleeve and screwed into the separating element to fix it. According to a specific embodiment of the present invention, the flange plate is fixedly attached to both ends of the locking unit 42, for example by welding the two flange plates to the two ends of the sleeve 4221. Furthermore, the individual flange plate is provided with a mounting through-hole 412 for the insertion of a threaded bolt or screw to enable fastening to the housing 31 by screwing it in place, and a positioning projection 413 is provided on the side of the flange plate facing the housing. The flange plate is also provided with a channel 411 through which the individual locking pin 4211 is guided during its extension and retraction movement. In the assembled state, the positioning projection can engage in a corresponding positioning bore or groove provided on the housing. The channel extends transversely to the first extension direction x1 into the housing 31 and is aligned with the path of movement of the slide 32 in the housing.As described above, the individual locking pin can extend and retract through channel 411 and the corresponding through-hole in the housing to engage with the slide in the first operating position (e.g. by insertion into the respective locking hole of the slide) and to be released from the slide in the second operating position (e.g. by moving out of the respective locking hole of the slide). Finally, it is worth mentioning that the single locking pin, as an actuator element, is to be locked by insertion into the first support beam (or the housing) on ​​the one hand, and into the slide on the other, in order to lock the slide and the first support beam (or the housing 31 rigidly connected to the first support beam 1) together and thus prevent relative movement between the two in the first extension direction x1. The main function of the adaptive mounting section is therefore to use it to insert the single locking pin into the first support beam (or the housing) and thus lock it in place. In this sense, the adaptive mounting section can, in principle, be any insertion structure rigidly attached to the first support beam (or the housing). In this respect, according to a first embodiment, it is preferred, as described above, that the adaptive mounting section is designed as a flange plate that is fixedly connected to the housing 31 of the connecting device 3. The surface of the flange plate can abut the side surface of the housing's side plate. The flange plates can be fixedly attached to both ends of the locking unit, i.e., the rod-shaped component, in particular by welding the two flange plates to the two ends of the sleeve 4221. Preferably, the individual flange plate is further provided with a positioning projection, while the individual side plate of the housing is correspondingly provided with a positioning bore or groove. These interlock in the assembled state.This creates at least two fixing points in the mounting contact surface between the individual flange plate and the respective side plate of the housing (one is this positioning point and the other is the aforementioned screw connection point) to prevent relative rotation between the individual flange plate (as well as the locking unit and ultimately the entire limiting device) and the housing (and the first support beam). This facilitates operation, for example, one-handed rotation of the actuating plates to lock or unlock them. At the same time, the limiting device / locking unit remains connected to the main body of the rear load carrier at all times during the entire operating procedure and also during the entire process of adjusting the relative position between the first and second support beams, and does not fall off.This allows a single person to conveniently perform the relevant adjustment and locking operations with their bare hands. Optionally, the same fastening mechanism (e.g., the same threaded bolt or screw and the same through-hole or threaded hole on the first support bracket) can be used for the fixed connection between the adaptive mounting section / flange plate, the housing, and the first support bracket, as shown in Fig. 4. The threaded bolt F1 is inserted sequentially through the through-hole in one side plate of the housing 31, the through-hole on the first support bracket 1, the through-hole in the other side plate of the housing 31, and the mounting through-hole on the adaptive mounting section 41, i.e., on the flange plate, to bolt these three components together. This method is structurally compact and requires few parts, but has the disadvantage that separate disassembly of the limiting device is not easily possible. Accordingly, it is possible to actuate the individual locking pin so that it retracts from the housing 31 and the respective flange plate. After further loosening other removable fastening mechanisms (such as the bolt or screw connection of the individual flange plate to the housing / the first support bracket), the limiting device (including the locking unit together with the adaptive mounting section / flange plate) can be removed, for example, for separate storage, replacement, or maintenance. In this sense, the limiting device can be used and sold as a standalone accessory. In this respect, for example, according to a second embodiment, the through-hole into which the individual locking pin engages can serve directly as an adaptive mounting section on the housing 31. In this case, no separate component needs to be provided as an adaptive mounting section. Consequently, it is possible to actuate the individual locking pin in such a way that it retracts from the housing 31 and detaches from both the slide and the adaptive mounting section. This allows the locking unit 42 (as a complete limiting device) to be directly removed, e.g., for separate storage, replacement, or maintenance. In this sense, the locking unit can be used and sold as a standalone accessory. In comparison to the first embodiment, the second embodiment, due to the lack of a permanent positioning connection between the limiting device / locking unit and the main body of the rear load carrier, generally requires coordinated operation with both hands or even the assistance of a second person to perform the corresponding adjustment and locking operations, which impairs ease of use. However, the limiting device itself and its associated structure are significantly simplified. The number of parts can be reduced as much as possible while still meeting the functional requirements. In principle, it is suitable for all similarly structured limiting and locking applications, especially for retrofitting and upgrading older models of rear load carriers of the same type, where it offers considerable value and advantage. With regard to the specific use of the rear load carrier of the present invention and the associated functional configurations, some suitable and / or preferred structural designs are proposed below. According to a specific embodiment of the present invention, the first support beam 1 can comprise a first support section 11 and a load-bearing section 12. The articulated assembly is arranged between the load-bearing section and the first support section. The first support beam 1, with its two freely projecting leg segments, forms the load-bearing section 12. The second support beam 2 comprises a second support section 21. The first support section 11 and the second support section 21 are designed to bear against and be supported by the body of a vehicle when the rear load carrier is in use. The load-bearing section 12 is designed to support items carried along, such as bicycles, when the rear load carrier is in use. Furthermore, it is provided that at least one lashing device 6 is provided or mounted on the freely projecting leg segments that form the load-bearing section 12 in order to attach an object to it in the operating condition of the rear load carrier. Furthermore, it is provided that the first support beam 1 and the second support beam 2 each form their respective first support section 11 and second support section 21, respectively, in the base region of their U-shaped structure. Preferably, the second support beam 2 is provided with a secondary frame 2a, which serves as an extension of the second support beam. The secondary frame is hinged to the base region of the U-shaped structure of the second support beam 2. The second support section 21 is formed by or integrated into the secondary frame 2a. It is advantageous that the main bodies of the first support beam 1, the second support beam 2 and, if applicable, also its secondary frame 2a, can each be made from a bent or welded metal tube, the structure and dimensions of which are designed so that they can be stacked on top of each other or nested inside one another, in particular that by relative rotation of the first support beam 1 and the second support beam 2 the two legs of the first support beam and the two legs of the second support beam can be positioned parallel and next to each other and, at the same time, by relative rotation of the secondary frame 2a and the second support beam 2, the secondary frame 2a can be folded over and arranged inside the second support beam 2. Furthermore, it is provided that the rear load carrier is equipped with at least one suspension device 5 which is designed to mount the rear load carrier detachably to the body of the vehicle. Therefore, the technical solution proposed by the present invention can generally be implemented in the manner described below. Referring to Figures 1, 2, 3, 4, 5 to 6, the first support beam 1 and the second support beam 2 can each be designed as a frame with a substantially U-shaped structure, preferably made of bent metal tubes. This U-shaped structure has two parallel legs and a base connecting these two legs. The first support beam 1 (in the illustrated embodiment, specifically the housing 31 rigidly connected to the first support beam 1) and the second support beam 2 are pivotally connected to each other. This is achieved by connecting their legs in pairs through the pivot assembly, which includes a pivot pin (i.e., the main pin mentioned above). The first support beam 1, with its two freely projecting leg segments, forms the load-bearing section 12. At least one lashing device 6 is attached or mounted to these projecting leg segments to secure an object, such as a bicycle, when the rear load carrier is in use. The first support beam 1 and the second support beam 2 can each form the first support section 11 and the second support section 21, respectively, in the base region of their U-shaped structure. These serve to rest against and be supported by the vehicle body (e.g., the trunk) when the rear load carrier is in use. Preferably, the second support beam 2 can also be provided with the subframe 2a, which serves as an extension of the second support beam. This subframe is hinged to the base region of the U-shaped structure of the second support beam.In this case, the second support section 21 can be formed by or attached to this subframe. With this design, the rear load carrier of the present invention can better adapt to the contour of the vehicle's rear (i.e., the car trunk) during assembly and use, thus improving its support and fixation. Advantageously, the first support section 11 and / or the second support section 21 are preferably encased on their structural bodies (such as rigid metal tube segments) with a buffer element 111 and / or a buffer element 211 to protect the body surface from damage such as impact, abrasion, or scratching by hard objects. The specific structure, shape, and material of the buffer elements can be designed independently by experts in this field based on the actual circumstances and application requirements. The buffer elements shown in the drawings, in the form of rubber or silicone roller sleeves, can serve as a reference option; however, there is no limitation in this respect under the present invention. The main bodies of the first support beam 1, the second support beam 2, and, if applicable, its subframe 2a, can each be made of bent or welded metal tubing. Their structure and dimensions are designed so that they can be stacked on top of each other or nested within one another. For example, by a relative rotation between the first support beam 1 and the second support beam 2 (which are hinged together), the two legs of the first support beam and the two legs of the second support beam can be positioned parallel and side by side. Simultaneously, by a relative rotation between the subframe 2a and the second support beam 2 (which are hinged together), the subframe 2a can be folded over and positioned inside the second support beam 2.This allows the rear load carrier of the present invention to be folded into a flat structure when not in use, in order to facilitate storage. Referring to Figures 1 and 5, in the operating state of the rear load carrier, the first support beam 1 and the second support beam 2, together with its subframe 2a, if present, are unfolded by a relative rotation about the pivot pin. The relative position of the first support beam 1 and the second support beam 2 (in particular the angle enclosed by the first extension direction x1 and the second extension direction x2) is then fixed after adjustment as described above by the interaction of the connecting device 3 and the limiting device 4. The rear load carrier is attached to the vehicle body via the suspension device 5 in a removable manner and is supported by the first and second support sections resting against the body (e.g., the car trunk).For example, in a sedan, the first support section can be located on the upper side of the trunk and the second support section on the lower side of the trunk, preferably in a position away from the rear license plate, as shown in Fig. 5. The suspension device 5 can be designed as a tension strap, preferably with a mounting accessory 51 that can be attached to the rear load carrier (specifically to its first support bracket 1 or second support bracket 2), and a tensioning assembly 52 that connects the rear load carrier to the vehicle body. The tensioning assembly comprises a flexible and / or elastic strap body and hook fasteners at both ends of the strap body. The hook fastener at one end can be attached to the mounting accessory, and the hook fastener at the other end can be attached to the vehicle body (e.g., at the joint of a connecting edge between the car trunk and the vehicle body).Preferably, as shown in Figs. 1 and 5, several of the suspension devices 5 described above are provided. The respective mounting accessories 51 are attached to the first support beam 1 and the second support beam 2 at multiple points to exert a tensile force on the rear load carrier from several sides, thus ensuring that the first and second support sections are reliably braced against the vehicle body. This positions the rear load carrier stably at the rear of the vehicle. In this way, items such as a bicycle can be attached to the rear load carrier (specifically to the load-bearing section of a first support beam 1) by means of the lashing device 6 for transport. Specifically for securing and transporting bicycles, the lashing device 6 can be designed as a lacing and locking device comprising a fastening block 61 and a lashing strap 62.This is configured and distributed as needed, in particular to reliably fix the top tube or down tube of a bicycle to the load-bearing section of the first support beam 1, as shown in Fig. 5. The drawings show an exemplary embodiment of the lashing device 6 or the lacing and locking device with its fastening block 61 and lashing strap 62 (see especially Fig. 5). However, the present invention does not, in principle, limit this. Referring to Fig. 6, the rear load carrier of the present invention, when folded, has a flat structure in its ready state, as explained above. Its overall shape is regular and takes up little space, which makes it easy to store in suitcases or cardboard boxes, or directly in the trunk of a car. Finally, it should be noted that a special setting can be provided for the ready or folded state of the rear load carrier, which is accompanied by a corresponding design of the joint assembly. Using the same mechanism, the relative position of both components (namely support beams 1 and 2) can also be maintained firmly in this state. The advantage lies in ensuring the dimensional stability of the rear load carrier in this state, which facilitates movement or carrying. Of course, depending on requirements, it is also perfectly possible to omit a locking mechanism for this position, i.e., not to include or implement the corresponding insertion of the individual locking pin into the slide. So far, only preferred embodiments of the present application and the technical principle used have been described. The person skilled in the art should understand that the scope of the invention of the present application is not limited to a technical solution consisting of a specific combination of the aforementioned technical features, but is also intended to include other technical solutions formed by any combination of the aforementioned technical features or their equivalent features, without departing from the inventive idea. For example, a technical solution is conceivable that is formed by replacing the above features with technical features having similar functions disclosed in the present application, but without being limited thereto. QUOTES INCLUDED IN THE DESCRIPTION This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature CN 116729266A

[0003]

Claims

Rear load carrier, in particular bicycle carrier for mounting on the trunk of a motor vehicle, comprising a first support carrier (1) and a second support carrier (2), wherein the first support carrier and the second support carrier are pivotally connected to each other and their main pivot axis (OO) extends perpendicular to a first extension direction (x1) defined by the first support carrier and to a second extension direction (x2) defined by the second support carrier, wherein the first support carrier and the second support carrier are connected to each other via a pivot assembly, such that the angle enclosed between the first and the second extension direction is adjustable and their relative position can be fixed, characterized in that the pivot assembly comprises a connecting device (3) and a limiting device (4),wherein the first support beam (1) and the second support beam (2) are connected to each other via the connecting device (3) by three pivot points (A, B, C) which, in the operating state of the rear load carrier, are arranged in a triangular shape in a plane perpendicular to the main pivot axis (OO), wherein at least one of the pivot points (B) is a movable pivot point which is displaceable relative to the first support beam (1) and / or to the second support beam (2), and wherein the limiting device (4) is designed such that it can be actuated, preferably by spring action, in order to lock the movable pivot point. Rear load carrier according to claim 1, characterized in that the connecting device (3) comprises: a housing (31) that is rigidly connected to the first support beam (1); a slide (32) that is slidable in the housing along the first extension direction (x1); a connecting rod (33) that is pivotally connected at a first end to the slide at a first pivot point (B) and pivotally connected at a second end to the second support beam (2) at a second pivot point (C), wherein a first pivot axis corresponding to the first pivot point and a second pivot axis corresponding to the second pivot point each run parallel to the main pivot axis (OO); the limiting device (4) comprises: an adaptive mounting section (41) that is rigidly connected to the housing (31) of the connecting device (3) or is formed integrally with the housing;a locking unit (42) comprising a preferably spring-loaded extendable and retractable locking pin (4211), wherein the locking pin is extended in a first operating position until it penetrates the housing (31) and engages both with the adaptive mounting section (41) and with the slide (32) inside the housing, and is retracted in a second operating position and detached from the slide (32). Rear load carrier according to claim 2, characterized in that the slide (32) is provided with at least two locking holes (322) which are spaced apart and arranged one behind the other in the first extension direction (x1) on a side of the first joint point (B) far removed from the main pivot axis (OO), and that the locking pin (4211) is engaged in the first operating position by being inserted into one of the locking holes (322) with the slide (32). Rear load carrier according to claim 3, characterized in that at least two position markings are provided on the first support carrier (1) or on the housing (31) in an area visible in the operating state of the rear load carrier, preferably near the position of the first pivot point (B), each serving to indicate a locking position of the first pivot point (B), wherein the position markings and the relative positions of the locking holes (322) in the first extension direction (x1) are uniquely assigned to each other. Rear load carrier according to one of claims 2 to 4, characterized in that the housing (31) of the connecting device (3) is on the one hand firmly connected to the first support carrier (1) via threaded bolts (F1, F2) or screws and on the other hand pivotally connected to the second support carrier (2) via a main bolt (PP). Rear load carrier according to one of claims 2 to 5, characterized in that the housing (31) is designed or provided as a molded part with a U-shaped cross-section, which has a longitudinally extending base and side plates formed along both sides of the base, wherein in the assembled state the longitudinal direction of the molded part coincides with the first extension direction (x1) of the first support carrier (1) and the molded part with its two side plates surrounds the first support carrier (1) from both sides of its structural body, wherein a receiving and movement space for the slide (32) is formed between the base of the molded part and the base surface of the structural body of the first support carrier (1). Rear load carrier according to claim 6, characterized in that the molded part of the housing (31) is provided on at least one of its side plates with two longitudinally spaced through holes which are aligned with correspondingly provided through holes or threaded holes on the first support carrier (1) in order to bolt the housing (31) to the first support carrier (1); and that the molded part of the housing (31) forms an end connection tab on at least one of its side plates which is provided with a mounting hole for the main bolt (PP), wherein the main bolt is guided through the mounting hole in the transverse direction of the housing and is then inserted into a correspondingly provided main bore hole on the second support carrier (2), wherein the main bolt and the main bore hole rotatably interact with each other to form a main pivot point (A) which corresponds to the main pivot axis (OO) of the first and the second support carrier. Rear load carrier according to claim 6 or 7, characterized in that the molded part of the housing (31) is provided on at least one of its side plates with a longitudinally extending guide slot (311). Rear load carrier according to claim 8, characterized in that the first end of the connecting rod (33) is pivotally connected to the slide (32) via a first bolt (P1), wherein the first bolt is guided through the guide slot (311) in the transverse direction of the housing (31) and is then inserted into a corresponding first bore hole (321) provided on the slide, wherein the first bolt and the first bore hole rotatably interact with each other to form the first pivot point (B), and wherein the first bolt slidably interacts with the guide slot to guide the slide in its movement within the housing along the first extension direction (x1) and thereby limit the path of movement of the first pivot point (B). Rear load carrier according to one of claims 2 to 9, characterized in that the second end of the connecting rod (33) is pivotally connected to the second support carrier (2) via a second bolt (P2), wherein the second bolt is inserted into a corresponding second borehole provided on the second support carrier (2), and the second bolt and the second borehole rotatably interact with each other to form the second pivot point (C). Rear load carrier according to one of claims 1 to 10, characterized in that the first support carrier (1) and the second support carrier (2) are each designed as a frame with a U-shaped structure, wherein the U-shaped structure has two parallel legs and a base connecting these two legs, wherein the two legs of the first support carrier extend along the first extension direction (x1) and the two legs of the second support carrier extend along the second extension direction (x2), and wherein the legs of the first support carrier and the legs of the second support carrier are each connected to each other in pairs via the joint assembly. Rear load carrier according to claims 2 and 11, characterized in that the adaptive mounting section (41) is designed as a flange plate and the locking unit (42) is designed as a rod-shaped component extending between the two legs of the first support carrier (1), wherein the two ends of the rod-shaped component are each demountably attached to the housing (31) of the connecting device (3) via the flange plate. Rear load carrier according to claim 12, characterized in that the locking unit (42) comprises: an operating part (421) comprising two locking pins (4211); a support part (422) comprising a sleeve (4221) and a separating element (4222) provided in the middle segment of the sleeve, wherein two receiving spaces separated from each other by the separating element are formed in the sleeve; a spring part (423) comprising two compression springs (S);wherein on both sides of the separating element (4222) in the individual receiving space of the sleeve (4221) one of the locking pins and one of the compression springs are arranged, wherein the individual locking pin (4211) can move away from or towards the separating element (4222) in the respective receiving space along the longitudinal axis of the sleeve, and wherein the individual compression spring in the pre-tensioned state is supported at one end on the respective locking pin (4211) or on a structure rigidly connected to it and supported at the other end on the separating element (4222). Rear load carrier according to claim 13, characterized in that the locking pins (4211) are each provided with an actuating element (4212), which is preferably designed as an actuating plate or actuating rod, wherein the individual actuating element is firmly connected to the corresponding locking pin. Rear load carrier according to claim 14, characterized in that the wall of the sleeve (4221) is provided with a guide slot (4221-1) extending along its longitudinal axis, wherein the actuating elements (4212) project beyond the wall of the sleeve in the transverse direction and each have a guide segment that slidably interacts with the guide slot in order to guide the actuating elements in their movement together with the respective locking pins along the longitudinal axis of the sleeve. Rear load carrier according to claim 14 or 15, characterized in that the wall of the sleeve (4221) is provided with a recess (4221-2) into which the guide segment of the individual actuating element (4212) can engage, wherein the recess is connected in the transverse direction to the guide slot (4221-1) and extends in the circumferential direction of the sleeve, and wherein, in the direction of the longitudinal axis of the sleeve, the distance between the recess and a sleeve end corresponds to the distance between the guide segment of the individual actuating element (4212) and the sleeve end when the locking pin (4211) is in the second operating position. Rear load carrier according to one of claims 13 to 16, characterized in that in the middle segment of the sleeve (4221) its wall is provided with an insertion opening (4221-3) for the separating element (4222), which is connected on both sides to the guide slot (4221-1), wherein the separating element is firmly connected to the sleeve in the insertion opening. Rear load carrier according to one of claims 13 to 17, characterized in that a guide plate (4221a) is attached in each of the two end segments of the sleeve (4221), each of which has a central hole for passing the respective locking pin through during assembly. Rear load carrier according to one of claims 12 to 18, characterized in that the flange plate is fixedly attached to the two ends of the locking unit (42). Rear load carrier according to one of claims 12 to 19, characterized in that the flange plate is provided with a mounting through hole (412) for passing a threaded bolt or screw through it in order to enable fastening by screwing it to the housing (31), and a positioning projection (413) is provided on the side of the flange plate facing the housing, and that the flange plate is further provided with a channel (411) through which the individual locking pin (4211) is guided during its extension and retraction movement, wherein in the assembled state the positioning projection can engage in a corresponding positioning bore or positioning groove provided on the housing, and wherein the channel leads transversely to the first extension direction (x1) into the housing (31) and is aligned with the path of movement of the slide (32) in the housing. Rear load carrier according to claim 11, characterized in that the first support carrier (1) comprises a first support section (11) and a load receiving section (12), wherein the articulated assembly is arranged between the load receiving section and the first support section, wherein the first support carrier (1) with its two freely projecting leg segments forms the load receiving section (12), and that the second support carrier (2) comprises a second support section (21), wherein the first support section (11) and the second support section (21) are designed to bear against and be supported on the body of a vehicle in the operating condition of the rear load carrier. Rear load carrier according to claim 21, characterized in that at least one lashing device (6) is provided or mounted on the freely projecting leg segments that form the load receiving section (12) in order to attach an object to it in the operating state of the rear load carrier. Rear load carrier according to claim 21 or 22, characterized in that the first support carrier (1) and the second support carrier (2) each form their respective first support section (11) or second support section (21) in the bottom area of ​​their U-shaped structure. Rear load carrier according to one of claims 21 to 23, characterized in that the second support carrier (2) is provided with a secondary frame (2a) which serves as an extension of the second support carrier, wherein the secondary frame is articulated to the bottom area of ​​the U-shaped structure of the second support carrier (2), and wherein the second support section (21) is formed by or on the secondary frame (2a). Rear load carrier according to one of claims 21 to 24, characterized in that the main bodies of the first support carrier (1), the second support carrier (2) and optionally also its subframe (2a) can each be made from a bent or welded metal tube, the structure and dimensions of which are designed so that they can be stacked on top of each other or nested inside one another, in particular that by relative rotation of the first support carrier (1) and the second support carrier (2) the two legs of the first support carrier and the two legs of the second support carrier can be positioned parallel and next to each other and at the same time by relative rotation of the subframe (2a) and the second support carrier (2) the subframe (2a) can be folded over and arranged inside the second support carrier (2). Rear load carrier according to one of claims 1 to 25, characterized in that the rear load carrier is provided with at least one suspension device (5) which is designed to mount the rear load carrier demountably on the body of the vehicle.

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