Hood arrangement for a motor vehicle

Abstract

The invention relates to a bonnet arrangement (10) for a motor vehicle (1), comprising a bonnet (11) which, in a closed position (A), closes an engine compartment access opening (4) of a vehicle body (2), and comprising at least one hinge arrangement (12) which has a vehicle body-side base element (20) and a bonnet-side pivot element (30) which, in the closed position (A), establish a positive locking on both sides with respect to a longitudinal axis (X) and a vertical axis (Z).In order to enable a simplified connection of a bonnet and easy access to the engine compartment, the invention provides that the bonnet (11) can be pivoted from the closed position (A) to an open position (B) by a pivoting movement about a pivot axis (S) running parallel to a transverse axis (Y), in which the positive locking is at least partially released, so that the bonnet (11) can be detached from the vehicle body (2) from the open position (B) by a decoupling movement, which is at least partially translational, together with the pivot element (30).

Description

[0001] The invention relates to a hood assembly for a motor vehicle, having the features of the preamble of claim 1.

[0002] In motor vehicles such as cars or light trucks, the engine compartment is typically closed with a hood that may cover an opening on top and is pivoted to provide access to the engine compartment. This may be for servicing purposes, e.g., topping up the windshield washer fluid, topping up or checking the coolant or brake fluid, or repairing the drivetrain or other components. Hinges may be provided in the A-pillar area on either side of the vehicle's transverse axis, while a locking mechanism protects the hood from accidental or unauthorized opening. In electric vehicles, there is now and will be less need for the driver to access the space under the hood. Therefore, more permanent fastening systems can be used, although they do allow the hood to be opened for servicing.Such fastening systems can be designed simpler and less cost-intensive.

[0003] US 10 315 705 B2 discloses a system for mounting a motor vehicle hood to a vehicle body, comprising a guide element for slidingly guiding the hood relative to the body in a longitudinal direction of the vehicle, a locking element for locking the hood to fix the hood relative to the body in a closed position, wherein the locking element assumes an activated state as a result of a sliding movement of the hood relative to the body in the longitudinal direction of the vehicle in a first direction, and a lock which, in a locking configuration, prevents the sliding movement of the hood in the second direction in the longitudinal direction, wherein the guide element has a self-centering element for centering the hood relative to the body in a direction transverse to the vehicle itself.

[0004] US 3 767 001 A discloses a fastening arrangement for a closure element of a compartment opening of a vehicle body, the fastening arrangement comprising a sliding element between the closure element and the vehicle body near an end of the compartment opening, a connecting means having a portion pivotally mounted on the closure element, and means for holding the connecting means on the vehicle body for movement between a first and a second position to cooperate with the sliding element in fastening the closure element for generally translational movement between a closed position and a partially open position.

[0005] EP 2 814 698 B1 discloses a system for mounting a hood to a motor vehicle body, which system comprises, on the one hand, at least one hood support fastened to the body and comprising positioning elements that can be activated to interact with the hood, so that the hood is held in a closed position. The positioning elements are configured such that they can be activated and deactivated by sliding the hood relative to the hood support in a first and a second opposite direction, respectively, in particular in a substantially horizontal direction. Furthermore, the system comprises a locking mechanism that is adjustable between a locking configuration that prevents deactivation of the positioning elements and an unlocking configuration that allows activation of the positioning elements.The sliding of the hood in the first direction is controlled by changing the locking mechanism from the unlocking configuration to the locking configuration.

[0006] DE 10 2017 201 784 A1 discloses an assembly system for releasably fastening a trim part to a vehicle body. The trim part has at least one guide element, and the vehicle body has at least one guide slot along which the guide element can be displaced. The guide slot guides the guide element from a feed position to a final assembly position and vice versa. The guide slot is designed such that the guide element undergoes a change in direction of movement several times when displaced along the respective guide slot.

[0007] DE 197 18 594 A1 discloses a passenger vehicle with a hood for covering an engine compartment, an oil reservoir, a windshield washer reservoir, and an oil level gauge arranged in the engine compartment. The hood is detachably connected to the vehicle frame and has two hooks that can be locked to two retaining brackets arranged on the respective longitudinal members.

[0008] DE 103 32 365 A1 discloses a body with a substructure, a removable body element and holding means comprising at least one holding device with a first element, second element and third element for holding the body element in a normal position on the substructure with a limited holding force, wherein the body element can be displaced into a retracted position under the action of a force exceeding the holding force, wherein the second element and the third element can be displaced relative to one another under the action of the force, wherein the first element and the second element releasably engage with one another.

[0009] Given the state of the art shown, a simplified connection of a hood that allows easy access to the engine compartment still offers room for improvement.

[0010] The invention is based on the object of enabling a simplified connection of a bonnet and easy access to the engine compartment.

[0011] According to the invention, the object is achieved by a hood arrangement having the features of claim 1, wherein the subclaims relate to advantageous embodiments of the invention.

[0012] It should be noted that the features and measures listed individually in the following description can be combined with one another in any technically reasonable manner and demonstrate further embodiments of the invention. The description further characterizes and specifies the invention, particularly in conjunction with the figures.

[0013] The invention provides a hood assembly for a motor vehicle. The motor vehicle can be, in particular, a passenger car, but also a truck. In particular, it can be an electric vehicle, although application to vehicles with combustion engines is also possible.

[0014] The bonnet assembly has a bonnet which, in a closed position, closes an engine compartment access opening of a vehicle body. The vehicle body can correspond to the sprung mass of the motor vehicle, for example the chassis and the body. The engine compartment access opening is an opening through which the engine compartment can be accessed when the motor vehicle is fully assembled. It is normally formed in a panel of the vehicle body. The engine compartment can be arranged at the front or the rear with respect to the direction of travel of the motor vehicle. The access opening normally adjoins the top of the engine compartment, but it can also point forwards or diagonally forwards, for example in the case of a front-facing engine compartment, or rearwards or diagonally backwards in the case of a rear-facing engine compartment. The bonnet closes the engine compartment access opening when it is in a closed position.The term "closure" does not mean a fluid-tight seal, but rather means that access to the engine compartment, i.e., reaching into the engine compartment, is impossible for a user through the engine compartment access opening. The hood can be made of metal, e.g., steel or aluminum, but it can also be made of other materials, such as plastic or fiber-reinforced plastic.

[0015] Furthermore, the hood assembly has at least one hinge assembly having a base element on the vehicle body side and a pivot element on the hood side, which, in the closed position, create a positive connection on both sides with respect to a longitudinal axis and a vertical axis. The term "hinge assembly" is not to be interpreted in a restrictive manner, although the function of the hinge assembly can at least partially be compared to a hinge. The hinge assembly can also be referred to as a connecting assembly or coupling assembly. It has, on the one hand, a base element on the vehicle body side. This is preferably arranged stationary on the vehicle body or can be considered part thereof. Furthermore, it has a pivot element on the hood side. This is arranged on the hood.Preferably, it is rigidly connected to the bonnet, which also includes the possibility of it being formed entirely or partially in one piece with the bonnet. As will become clear below, the base element and the pivoting element can at least partially be compared to the two parts of a hinge that move relative to one another. When the bonnet is in the closed position, the base element and the pivoting element interact in such a way that they create a positive connection both with respect to a longitudinal axis and with respect to a vertical axis. The positive connection is present on both sides, i.e. both in the direction of the longitudinal axis (or vertical axis) and in the opposite direction. The positive connection either prevents or at least limits to a negligible amount any translational movement of the bonnet relative to the vehicle body both along the longitudinal axis and along the vertical axis.In this context, the terms "longitudinal axis," "transverse axis," and "vertical axis" are not to be interpreted restrictively, except that these axes are aligned perpendicular to each other in pairs. Generally, they form a stationary reference system with respect to the vehicle body. In particular, however, they can refer to the vehicle's longitudinal axis, the vehicle's transverse axis, and the vehicle's vertical axis. However, other definitions are also conceivable; for example, the longitudinal axis could correspond to the vehicle's transverse axis or be aligned obliquely to the vehicle's longitudinal axis and vertical axis.

[0016] The bonnet can be pivoted from the closed position into an open position by a pivoting movement about a pivot axis running parallel to a transverse axis, in which the positive connection is at least partially released, so that the bonnet can be detached from the open position together with the pivot element from the vehicle body by a decoupling movement that is at least partially translational. The pivot axis preferably runs in the region of the hinge arrangement, in particular through the hinge arrangement. As will be explained below, the pivot axis is preferably defined by the interaction of the pivot element and the base element. In other words, the pivot element and the base element interact with one another in the closed position in such a way that a pivoting movement about the pivot axis forms the only degree of freedom.It can also be said that the bonnet is pivotable from the closed position into the open position by means of at least one hinge arrangement. In the open position, the bonnet at least does not completely close the engine compartment access opening, so that access to the engine compartment is possible under certain circumstances. However, embodiments are also conceivable in which the open position does not allow access to the engine compartment because the distance between the bonnet and the adjacent trim parts is too small. In any case, the translational form fit between the base element and the pivot element is at least partially released by the pivoting movement into the open position. The pivoting movement can preferably correspond to a pivot angle of at least 10° or at least 20°, so that the closed position and the open position are clearly separated for a user. At least partial translational decoupling takes place.Thus, starting from the open position, the hood can be removed from the vehicle body and the base element together with the pivoting element. This occurs through a decoupling movement that is at least partially translational. The decoupling movement does not necessarily have to be linear; it can also be a complex movement with several individual translational movements. Furthermore, the decoupling movement can also include rotational movement components.

[0017] At least after the hood has been removed from the vehicle body, full access to the engine compartment access opening is possible. The open position can, under certain circumstances, merely serve as an intermediate position during dismantling of the hood. However, it is also conceivable that access to the engine compartment is already possible in the open position. In this case, if necessary, the hood can remain connected to the vehicle body via the at least one hinge arrangement, wherein it can, under certain circumstances, be additionally supported, for example with a hood support that is connected to the vehicle body and - as with hoods known from the prior art - can be optionally folded in or out. The hood is released by the pivoting movement and the subsequent decoupling movement. The former is a prerequisite for the hood to be able to be released.This makes it easier for the user to perform the movement sequence, as it is clearly structured. It is impossible for the user to move the hood longitudinally and / or vertically from the closed position, causing the hood to suddenly detach. On the other hand, the hood is secured against translational displacement in the closed position by the positive locking mechanism with respect to both the longitudinal and vertical axes, solely by the at least one hinge arrangement.

[0018] The decoupling movement can preferably take place at least partially at an angle to the longitudinal axis (i.e., not parallel thereto). In particular, it can take place partially along the vertical axis, so that the hood is, so to speak, lifted off the vehicle body. A plurality of hinge assemblies can be provided. In particular, the engine compartment assembly can have two hinge assemblies spaced apart along the transverse axis. These correspond, to a certain extent, to the hinges in a hood known from the prior art. In addition to the at least one hinge assembly, a locking mechanism can be provided, which can, for example, have a striker on the hood side and an associated lock on the vehicle body side.

[0019] One embodiment provides that the base element has at least one base guide surface and the pivot element has at least one pivot guide surface, wherein at least one guide surface is circular arc-shaped and concentric to the pivot axis, and each pivot guide surface interacts with a base guide surface in such a way that it is guided thereon during the pivoting movement. Under certain circumstances, it can also be said that the pivot axis is defined by at least one pair of guide surfaces. Since one of the guide surfaces is circular arc-shaped and the two guide surfaces are guided against one another, the center of the circular arc corresponds to a pivot axis. The pivot guide surface and the base guide surface form a guide, and they can be in sliding contact with one another in whole or in part.Only one of the guide surfaces can be circular in shape or, in particular, both, which generally improves the guiding properties.

[0020] In addition to their guiding function, the guide surfaces can also perform a supporting function. Advantageously, the pivoting element, in the open position, is supported on the base element via at least one pivoting guide surface and a cooperating base guide surface. This naturally results in the hood being supported on the vehicle body. Thus, the weight of the hood can be at least partially supported on the vehicle body via the respective hinge arrangement. This makes it easier for the user to handle the hood and is particularly advantageous if the open position is not used as a mere intermediate position when removing the hood, but rather the hood is to remain in the open position for an extended period.Normally, the support of the swivel element on the base element is equivalent to at least one-sided positive locking with respect to the vertical axis (provided the vertical axis runs parallel to the direction of gravity).

[0021] In the open position, the pivoting element advantageously forms a positive connection with the base element on at least one side relative to the longitudinal axis, which is preferably achieved through the interaction of a base guide surface and a pivoting guide surface. The positive connection is normally only present on one side, so that the pivoting element can be displaced in the opposite direction relative to the longitudinal axis, possibly in conjunction with a simultaneous displacement along the vertical axis. In any case, forces along the longitudinal axis can also be transmitted via the hinge arrangement in this way, which is advantageous, for example, when the hood is supported in the open position for an extended period.

[0022] According to one embodiment, the base element has a hub section with a first base guide surface that interacts with a first pivot guide surface of an arcuate section of the pivot element arranged radially outward with respect to the pivot axis, wherein the hub section and the arcuate section, in the closed position, form an at least one-sided positive connection with respect to the longitudinal axis and the vertical axis. The hub section is preferably the section that is furthest radially inward with respect to the pivot axis, similar to the hub of a wheel. Accordingly, it has the aforementioned first base guide surface on the radial outside, which interacts with the first pivot guide surface of the base section. The arcuate section is arranged radially outward of the hub section and can be at least partially arcuate. However, this arcuate shape can be limited to the first pivot guide surface.During the pivoting movement, the curved section is guided radially on the outside of the hub section. In the closed position, the two sections form a positive connection on at least one side, which is maintained with respect to both the longitudinal axis and the vertical axis. Forces are transmitted via the first base guide surface and the first pivot guide surface.

[0023] The curved section advantageously defines a radially extending recess which is delimited by the first pivot guide surface and two displacement guide surfaces which interact with the hub section during the decoupling movement so that they are guided by the latter. One can say that during the decoupling movement the hub section is guided out of the curved section along the recess or, during the reverse movement, is inserted through the recess into the curved section. The pivot guide surface defines the end of the recess, while the displacement guide surfaces form its sides. The spacing of the displacement guide surfaces can advantageously be matched to the dimensions of the hub section so that they enable a defined, guided movement of the pivot element. The course of the displacement guide surfaces defines the direction of the decoupling movement.

[0024] It can also be provided that the arc section has a second pivot guide surface on the radial outside, which interacts with a second base guide surface of an outer section of the base element. The outer section is arranged radially outside the base section. Accordingly, the second base guide surface points inwards, while the second pivot guide surface points outwards. This embodiment can be combined with the presence of a hub section described above, but the arc section mentioned here can be independent of this. If a hub section is present, the arc section is arranged between the hub section and the outer section with respect to the radial direction. Due to the inside and outside guidance of the arc section provided in this case, the pivoting movement can generally be simplified and carried out with greater definition.The outer section may form an outer edge of the base element and in this case may also be referred to as an edge section.

[0025] Furthermore, the pivoting element can have a projection section with a third pivoting guide surface that interacts with a third base guide surface of a mating section of the base element. The projection section can project radially outward beyond the curved section, i.e., protrude relative to it. The term "mating section" merely denotes that it forms, in a sense, the counterpart to the projection section and is otherwise not to be interpreted in a restrictive manner. The third pivoting guide surface preferably faces outward, while the third base guide surface faces inward.

[0026] The numbering "first," "second," and "third" in this context serves only to distinguish between the two and does not imply a sequence. Furthermore, the presence of the "second" pivot guide surface, referred to in this context, does not imply that the "first" pivot guide surface, referred to here, must be present. The same applies to the third pivot guide surface and the corresponding base guide surfaces. Therefore, the selected numbering can be interchanged as desired.

[0027] The pivoting element preferably has a pivot stop surface which, in the closed position, interacts with a base stop surface of the base element through a tangential positive connection. The two stop surfaces define a stop position with respect to a rotation about the pivot axis. If the pivoting element is pivoted from the open position to the closed position, the movement is stopped in a defined manner by the two interacting stop surfaces. This makes it easier for the user to correctly position the hood in the closed position. The projection section can preferably have the pivot stop surface. Likewise, the outer section can preferably have the base stop surface. The stop surfaces can simultaneously contribute to at least one-sided positive connection with respect to the longitudinal axis and / or the vertical axis.In particular, the projection portion can form a positive connection with the base element on both sides with respect to the longitudinal axis. For example, the positive connection can be formed with the counter portion on the one hand and with the outer portion on the other.

[0028] The base element preferably has two cheek sections spaced apart along the pivot axis, which define a receiving space between them for at least partially receiving the pivot element, which space merges into an insertion opening for the pivot element. The two cheek sections can form a bilateral positive connection with the pivot element along the pivot axis - and thus along the transverse axis. At least one of the cheek sections can be formed integrally with the hub section, the outer section and / or the counter section. The two cheek sections can in particular be formed by separately manufactured elements that were subsequently connected to one another. The cheek sections are spaced apart, wherein the hub section, the outer section and / or the counter section can serve as spacers, i.e. can be arranged between the cheek sections in the direction of the pivot axis (i.e. the transverse axis).In the closed position as well as in the open position, the pivoting element is arranged at least partially between the cheek sections in the receiving space.

[0029] To make it easier to insert the pivoting element into the receiving space, the cheek sections can have guide sections in the area of ​​the insertion opening, the distance between the guide sections decreasing towards the receiving space. The guide sections are arranged at least partially outside the insertion opening as viewed from the receiving space. As the pivoting element approaches the insertion opening from the outside, it can initially simply be inserted between the guide sections as the distance between them is even greater further out. As it approaches the insertion opening, the distance decreases, i.e. the guide sections act like a funnel through which the pivoting element is guided towards the insertion opening. The decreasing distance between the guide sections is normally given with respect to the transverse axis.

[0030] Further advantageous details and effects of the invention are explained in more detail below with reference to different embodiments shown in the figures. Fig. 1 a perspective view of a motor vehicle with a first embodiment of an engine hood assembly according to the invention with an engine hood in a closed position; Fig. 2 a perspective view of the motor vehicle from Fig. 1 with the hood in an open position; Fig. 3 an exploded view of a base element of a hinge assembly of the hood assembly of Fig. 1; Fig. 4A is a side view of the hinge assembly with a portion of the hood in the closed position; Fig. 4B is a side view of the hinge assembly with a portion of the hood in the open position; Fig. 4C is a side view of the hinge assembly with a portion of the hood in a decoupled position; Fig. 5 is a perspective view of the hinge assembly with part of the hood in the open position; Fig. 6A is a side view of a hinge assembly of a second embodiment of a hood assembly according to the invention with a portion of the hood in the closed position; Fig. 6B a side view of the hinge arrangement of Fig. 6A with part of the hood in the open position; Fig. 6C a side view of the hinge arrangement from Fig. 6A with part of the hood in a partially decoupled position; Fig. 6D a side view of the hinge arrangement Fig. 6A with part of the bonnet in a fully decoupled position; and Fig. 6E a side view of the hinge arrangement from Fig. 6A with part of the hood in an opening support position.

[0031] In the different figures, identical parts are always provided with the same reference symbols, which is why they are usually only described once.

[0032] Fig. 1 and Fig. 2 show a motor vehicle 1, e.g., an electric vehicle, with a vehicle body 2 having an engine compartment 3 at the front with respect to a longitudinal axis X. The engine compartment 3 is accessible via an engine compartment access opening 4, which in turn can be closed by a hood 11. Fig. 1 shows the hood 11 in a closed position A, while Fig. 2 shows an opening position B in which the bonnet 11 is raised and thus exposes the engine compartment access opening 4. The bonnet 11 is part of a first embodiment of a bonnet assembly 10 according to the invention. The latter has two hinge assemblies 15, which are arranged on the bonnet 11 at a distance from one another with respect to a transverse axis Y and connect the bonnet to the vehicle body 2. Each hinge assembly 15 has a pivot element 30 connected to the bonnet 11 and a base element 20 cooperating therewith, which is connected to the vehicle body 2. Furthermore, a Fig. 1 and Fig. 2, a purely schematically illustrated locking mechanism 12 is provided, which may, for example, have a locking bracket connected to the bonnet and an associated lock on the side of the vehicle body 2.

[0033] Fig. 3 is an exploded view of a base element 20, which in this example consists of two element parts 20.1, 20.2 each formed as one piece.

[0034] A first element part 20.1 has a first cheek section 21 which runs parallel to the longitudinal axis X and to a vertical axis Z. A hub section 23, an outer section 24 and a counter section 25 protrude from the cheek section 21 in the direction of the transverse axis Y. A first base guide surface 23.1 is formed on the hub section 23, which is circularly arc-shaped and arranged concentrically with respect to a pivot axis S. A second base guide surface 24.1 is formed on the outer section 24, which is also circularly arc-shaped and arranged concentrically with respect to the pivot axis S. In addition, a base stop surface 24.2 is formed on the outer section 24, which runs approximately radially with respect to the pivot axis S. A third base guide surface 25.1 is formed on the counter section 25, which also runs concentrically with respect to the pivot axis S. The second element part 20.2 is in this case predominantly formed by a second cheek section 21.When the two element parts 20.1, 20.2 are assembled, both cheek sections 21 are spaced apart from one another along the transverse axis Y and define a receiving space 27 for a part of the pivoting element 30 between them. This leaves an insertion opening 28 through which the pivoting element 30 can be inserted. Viewed from the receiving space 27, outside the insertion opening 28, each cheek section 21 has a guide section 22. The guide sections 22 are inclined relative to the cheek sections 21, so that their distance along the transverse axis Y decreases toward the insertion opening 28.

[0035] Fig. 4A shows a side view of a hinge arrangement 15 with a part of the engine hood 11 in the closed position A, wherein the second element part 20.2 has been omitted. The pivoting element 30 is connected to the engine hood 11 via an arm section 31. Various sections are formed at the end of the arm section 31, via which the pivoting element 30 interacts with the base element 20. A curved section 32 has a first pivoting guide surface 32.1, which in turn is arranged concentrically to the pivot axis S. Its size is matched to the first base guide surface 23.1. The first pivoting guide surface 32.1 is followed by two displacement guide surfaces 32.2, which run parallel to one another and in the Fig. 4A, are aligned parallel to the longitudinal axis X. Together with the first pivot guide surface 32.1, they delimit a recess 33 within the curved section 32. Towards the outside, the curved section 32 has a second pivot guide surface 32.2, which is again circularly arc-shaped and has a radius matched to the second base guide surface 24.1. In addition, the pivot element 30 has a projection section 34 which projects radially outwards relative to the curved section 32 and has a third pivot guide surface 34.1 which interacts with the third base guide surface 25.1. In addition, it has a pivot stop surface 34.2 which bears against the base stop surface 24.2.

[0036] The interaction of the swivel stop surface 34.2 with the base stop surface 24.2 defines a stop position with respect to a rotational movement around the swivel axis S. In the Fig. 4A, in which the pivoting element 30 is partially arranged in the receiving space 27, a bilateral positive connection is established between the pivoting element 30 and the base element 20 with respect to the longitudinal axis X and with respect to the vertical axis Z. The positive connection with respect to the vertical axis Z is based on the one hand on the interaction of the curved section 32 with the hub section 23, the interaction of the curved section 32 with the outer section 24 and the interaction of the projection section 34 with the counter section 25. The positive connection with respect to the longitudinal axis X is based on the interaction of the projection section 34 with the counter section 25 and the outer section 24 as well as the interaction of the curved section 32 with the outer section 24 and the hub section 23. Overall, therefore, no translational movement of the pivoting element 30 relative to the base element 20 along the plane spanned by the longitudinal axis X and the vertical axis Z is possible.Movement along the transverse axis Y is prevented by the opposing cheek sections 21.

[0037] To access the engine compartment 3, the locking mechanism 12 is released, and then the hood 11 is pivoted about the pivot axis S with the respective pivot element 30. During the corresponding pivoting movement, the first base guide surface 23.1 with the first pivoting guide surface 32.1, the second base guide surface 24.1 with the second pivoting guide surface 32.2, and the third base guide surface 25.1 with the third pivoting guide surface 34.1 each form a pair of surfaces that are guided against one another. The corresponding guide ensures that the pivoting movement is simple and defined. Fig. 4B and Fig. 5 show the opening position B reached at the end of the pivoting movement. In this position, the positive connection between the pivoting element 30 and the base element 20 is partially dissolved. However, as shown in Fig. 2, the bonnet 11 is supported in the opening position B by means of a bonnet support 5. The bonnet 11 continues to be partially supported relative to the vehicle body 2 via the pivot element 30 and the base element 20. Forces along the vertical axis Z and along the longitudinal axis X are transmitted via the first pivot guide surface 32.1 and the first base guide surface 23.1, on the one hand, and via the second pivot guide surface 32.2 and the second base guide surface 24.1, on the other hand.

[0038] Starting from the opening position B, the hood 11 can also be completely removed. This is possible according to a decoupling movement, which is defined by the course of the displacement guide surfaces 32.3. The corresponding decoupling movement is translational, in this case oblique to the longitudinal axis X. The displacement guide surfaces 32.3 are guided along the first base guide surface 23.1 of the hub section 23. Finally, the Fig. 4C, in which the pivoting element 30 is completely detached from the base element 20. The coupling of the engine hood 11 is effected by a reverse movement sequence, whereby the insertion of the pivoting element 30 into the receiving space 27 is simplified by the guide sections 22.

[0039] Fig. 6A to 6E show side views of a second embodiment of an engine hood assembly 10 according to the invention, wherein again only a hinge assembly 15 and a part of the engine hood 11 are shown. Again, the second cheek section 21 has been omitted from the base element 20. In this embodiment, too, the cheek sections 21 again have guide sections 22, which are arranged at the insertion opening 28. The two-part outer section 24 in this case has no guide surfaces and essentially serves to connect the two element parts 20.1, 20.2. The hub section 23 merges into a base abutment section 26, which has the base stop surface 26.1 on the upper side with respect to the vertical axis Z. A corresponding pivot stop surface 31.1 is arranged on the arm section 31 of the pivot element 30. The arm section 31 also has a pivot abutment section 35, which in the Fig. 6A shown closed position A against the base abutment section 26. Through the interaction of the curved section 32 with the hub section 23 and through the interaction of the base abutment section 26 with the pivoting abutment section 35, a positive connection along the longitudinal axis X is established, while through the interaction of the arm section 31 with the base abutment section 26 and the interaction of the curved section 32 with the hub section 23, a positive connection with respect to the vertical axis Z is established.

[0040] By a pivoting movement around the pivot axis S, the bonnet 11 is moved into the Fig. 6B, in which the positive connection between the pivoting abutment section 35 and the base abutment section 26 is released. Accordingly, the pivoting element 30 can be moved by a downward translational movement at an angle of approximately 30° into the position shown in Fig. 6C, in which the curved section 32 is also detached from the hub section 23. Furthermore, by a compound, also partially rotary movement, the pivoting element 30 can be moved into the position shown in Fig. 6D shown. The embodiment shown here has an additional function that may make the use of a bonnet support 5 unnecessary. As shown in Fig. As shown in Figure 6E, the hood 11 can be arranged with the pivot element 30 in an opening support position. The arcuate portion 32 and parts of the arm portion 31 are positively enclosed between the outer portion 24 and the base abutment portion 26, so that rotational movement about the transverse axis Y is prevented. List of reference symbols: 1 motor vehicle 2 vehicle body 3 Engine compartment 4 Engine compartment access opening 5 Bonnet support 10 Bonnet arrangement 11 Bonnet 12 Locking mechanism 15 Hinge arrangement 20 basic elements 20.1, 20.2 Element part 21 Cheek section 22 Guide Section 23 Hub section 23.1, 24.1, 25.1 Base guide surface 24 Outer section 24.2, 26.1 Base stop surface 25 Countersection 26 Base abutment section 27 Recording room 28 insertion opening 30 Swivel element 31 arm section 31.1, 34.2 Swivel stop surface 32 arch sections 32.1, 32.2, 34.1 Swivel guide surface 32.3 Displacement guide surface 33 Recess 34 projection section 35 Swivel abutment section A closing position B Opening position S swivel axis X Longitudinal axis Y transverse axis Z vertical axis QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] US 10 315 705 B2

[0003] US 3 767 001 A

[0004] EP 2 814 698 B1

[0005] DE 10 2017 201 784 A1

[0006] DE 197 18 594 A1

[0007] DE 103 32 365 A1

[0008]

Claims

[1] Bonnet assembly (10) for a motor vehicle (1), comprising a bonnet (11) which, in a closed position (A), closes an engine compartment access opening (4) of a vehicle body (2), and at least one hinge assembly (12) which has a vehicle body-side base element (20) and a bonnet-side pivot element (30), which, in the closed position (A), produce a bilateral positive connection with respect to a longitudinal axis (X) and a vertical axis (Z), characterized by that the engine hood (11) can be pivoted from the closed position (A) into an open position (B) by a pivoting movement about a pivot axis (S) running parallel to a transverse axis (Y), in which the positive connection is at least partially released, so that the engine hood (11) can be released from the open position (B) together with the pivoting element (30) from the vehicle body (2) by a decoupling movement which is at least partially translational. [2] Bonnet assembly (10) according to claim 1, characterized by in that the base element (20) has at least one base guide surface (23.1, 24.1, 25.1) and the pivoting element (30) has at least one pivoting guide surface (32.1, 32.2, 34.1), wherein at least one guide surface (23.1, 24.1, 25.1, 32.1, 32.2, 34.1) is circularly arc-shaped and concentric to the pivot axis (S) and a respective pivoting guide surface (32.1, 32.2, 34.1) cooperates with a base guide surface (23.1, 24.1, 25.1) in such a way that it is guided on the latter during the pivoting movement. [3] Bonnet assembly (10) according to one of the preceding claims, characterized by in that the pivoting element (30) in the opening position (B) forms at least one-sided positive engagement with the base element (20) with respect to the longitudinal axis (X), which is preferably produced by the interaction of a base guide surface (23.1, 24.1, 25.1) and a pivoting guide surface (32.1, 32.2, 34.1). [4] Bonnet assembly (10) according to one of the preceding claims, characterized by in that the base element (20) has a hub section (23) with a first base guide surface (23.1) which cooperates with a first pivot guide surface (32.1) of an arc section (32) of the pivot element (30) arranged radially on the outside with respect to the pivot axis (S), wherein the hub section (23) and the arc section (30) form an at least one-sided positive connection with respect to the longitudinal axis (X) and with respect to the vertical axis (Y) in the closed position (A). [5] Bonnet assembly (10) according to one of the preceding claims, characterized by that the arc section (32) has a second pivoting guide surface (32.2) on the radial outside, which cooperates with a second base guide surface (24.1) of an outer section (24) of the base element (20). [6] Bonnet assembly (10) according to one of the preceding claims, characterized bythat the pivoting element (30) has a projection section (34) with a third pivoting guide surface (34.1) which cooperates with a third base guide surface (25.1) of a counter section (25) of the base element (20). [7] Bonnet assembly (10) according to one of the preceding claims, characterized by that the pivoting element (30) has a pivoting stop surface (31.1, 34.2) which, in the closed position (A), interacts with a base stop surface (24.2, 26.1) of the base element (20) by means of a tangential positive connection. [8] Bonnet assembly (10) according to one of the preceding claims, characterized by that the projection portion (34) has the pivot stop surface (31.1, 34.2). [9] Bonnet assembly (10) according to one of the preceding claims, characterized byin that the base element (20) has two cheek sections (21) spaced apart along the pivot axis (S), which define between them a receiving space (27) for at least partially receiving the pivot element (30), which merges into an insertion opening (28) for the pivot element (30). [10] Bonnet assembly (10) according to one of the preceding claims, characterized by that the cheek sections (21) in the region of the insertion opening (28) have guide sections (22) whose distance decreases towards the receiving space (27).

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