Mounting socket for attaching a storage housing to the body of a motor vehicle, and arrangement of a mounting socket for attaching a storage housing to the body of a motor vehicle.

Abstract

Mounting bushing (1) for fastening a storage housing (2) of an energy storage device to a side longitudinal member (3) of a body (4) of an electrically powered motor vehicle, comprising a base part (11) and a bushing part (12) projecting from the base part (11), into which a screw element (13) for fixing the storage housing (2) can be screwed, wherein a connecting part (14) formed integrally with the base part (11) is arranged on the base part (11), which extends at an angle (15) to the base part (11) and via which the mounting bushing (1) can be connected to an inner sheet metal part (16) of the side longitudinal member (3), characterized in that • the socket part (12) and the base part (11) are integrally connected via a transition part (27) which has a greater wall thickness (28) than the base part (11) and the socket part (12) and / or • the fastening bushing (1) has at least one bending point (36) which is designed to pivot the bushing part (12) and the base part (11) relative to the connecting part (14) about a bending axis (38) passing through the bending point (36) when the bushing part (12) and / or the base part (11) are subjected to an accident-related force (37, 41).

Description

[0001] The invention relates to a fastening bushing for fastening a storage housing of an energy storage device to a lateral longitudinal member of a body of an electrically powered motor vehicle according to the preamble of patent claim 1. Furthermore, the invention relates to an arrangement of at least one fastening bushing for fastening a storage housing of an energy storage device to a lateral longitudinal member of a body of an electrically powered motor vehicle according to the preamble of patent claim 8.

[0002] DE 10 2018 133 049 A1 discloses a side sill for a motor vehicle, comprising an inner side sill part assigned to a floor assembly, a lower flange, and a side sill outer part, which define a cavity of the side sill in which a reinforcement part is arranged, which is fastened to the inner side sill part. The inner side sill part and the lower flange are designed as separate components, which are at least indirectly connected to one another along a flange connection running in the longitudinal direction of the side sill.

[0003] Furthermore, DE 10 2021 106 801 A1 discloses an energy storage floor assembly for an electrically powered motor vehicle, comprising a storage housing for accommodating an electrical energy storage device, which comprises at least one housing part, which is fastened to respective side sills extending in the region of the vehicle's outer sides of the floor assembly for arranging the storage housing underneath a floor assembly of the motor vehicle body. Furthermore, DE 10 2021 106 800 A1 discloses a storage housing for an electrical energy storage device of a motor vehicle. Furthermore, DE 10 2020 003 433 B3 discloses a body support structure for a vehicle.

[0004] The object of the invention is to provide a fastening bushing for fastening a storage housing of an energy storage device to a lateral longitudinal member of a body of an electrically driven motor vehicle and an arrangement of at least one fastening bushing for fastening a storage housing of an energy storage device to a lateral longitudinal member of a body of an electrically driven motor vehicle, so that the storage housing can be fastened to the lateral longitudinal member particularly securely and with particularly little effort.

[0005] This object is achieved according to the invention by a fastening bushing for fastening a storage housing of an energy storage device to a lateral longitudinal member of a body of an electrically driven motor vehicle with the features of patent claim 1 and by an arrangement of at least one fastening bushing for fastening a storage housing of an energy storage device to a lateral longitudinal member of a body of an electrically driven motor vehicle with the features of patent claim 6. Advantageous embodiments of the invention are the subject of the dependent patent claims and the description.

[0006] A first aspect of the invention relates to a mounting bushing for attaching a storage housing of a, in particular, electrical, energy storage device to a lateral longitudinal member of a body of an electrically powered motor vehicle. The motor vehicle is preferably designed as a passenger car. Alternatively, the motor vehicle can be designed as a commercial vehicle or a truck.

[0007] The motor vehicle has at least one electric machine, by means of which the motor vehicle can be driven electrically, in particular purely electrically. The motor vehicle is preferably designed as a battery-electric vehicle, in particular purely battery-electric vehicle, or as a hybrid vehicle. The energy storage device can supply the electric machine with electrical energy to drive the motor vehicle. The energy storage device is preferably designed as a battery or accumulator.

[0008] In order to be able to achieve a particularly high electrical output for electrical, in particular purely electrical, propulsion of the motor vehicle, the energy storage device can have an electrical voltage, in particular an electrical operating or nominal voltage, which is preferably greater than 50 volts, in particular above 60 volts, and preferably amounts to several hundred volts. Accordingly, the energy storage device is preferably designed as a high-voltage component. Thus, the energy storage device can in particular be referred to as a high-voltage storage device or can be designed as a high-voltage storage device.

[0009] The storage housing can be understood, in particular, as a housing element of the energy storage device. For example, the storage housing delimits or forms a receiving area in which the energy storage device is arranged or accommodated. This means that storage elements of the energy storage device are at least predominantly, in particular completely, covered or surrounded by the storage housing. The storage element can be, for example, storage cells.

[0010] The lateral longitudinal member preferably extends, in particular at least substantially, in the longitudinal direction of the motor vehicle. This means that a longitudinal extension direction of the longitudinal member runs along the longitudinal direction of the motor vehicle. The longitudinal member is preferably arranged in a lateral region relative to a transverse direction of the motor vehicle. This means that the longitudinal member is spaced from a longitudinal axis of the motor vehicle running in the longitudinal direction of the motor vehicle. The longitudinal axis can be understood in particular as a central axis. For example, the lateral longitudinal member is part of a sill, in particular a side sill, of the body of the motor vehicle. This means that the sill, in particular the side sill, can encompass the longitudinal member. The body can be understood in particular as a self-supporting body.

[0011] The fastening bushing comprises a base part and a bushing part protruding from the base part. The bushing part protruding from the base part can be understood, in particular, to mean that an axial direction of the bushing part runs obliquely or perpendicularly to a longitudinal direction and / or a transverse direction of the base part. The bushing part thus protrudes beyond the base part, in particular in the vertical direction of the vehicle.

[0012] Preferably, the socket part and the base part are formed as a single piece. This can be understood, in particular, as meaning that the socket part and the base part are formed as a single piece. This means that the socket part and the base part are not separate components formed and connected to one another.

[0013] A screw element for securing the storage housing can be screwed or is screwed into the socket part. In other words, the socket part has an internal thread, particularly on an inner circumferential surface, into which the screw element having an external thread can be screwed or is screwed, whereby the storage housing can be fastened or is secured via a screw connection, particularly via the fastening bush. For example, the socket part has a receiving space formed or delimited by a wall of the socket part, in which the screw element can be received or arranged for screwing into the socket part, particularly into the internal thread.

[0014] In order to be able to attach the storage housing to the lateral longitudinal member by means of the fastening bushing particularly securely and with particularly little effort, the invention provides for a connecting part formed integrally with the base part to be arranged on the base part. In other words, the fastening bushing comprises the base part and the connecting part, wherein the base part and the connecting part are formed integrally. In other words, the connecting part adjoins the base part, in particular directly, in one piece with the base part. This means that the base part and the connecting part are not components formed separately from one another and connected to one another.

[0015] Preferably, the fastening bushing is formed, in particular completely, in one piece or in one part. This means that the fastening bushing is not formed from separate and interconnected components.

[0016] Because the base part and the connecting part are arranged in one piece, and in particular the fastening bushing is formed in one piece, the storage housing can be fastened to the storage housing via the fastening bushing with particularly little effort. This means that the manufacturing costs of the motor vehicle, in particular the assembly costs, can be kept particularly low. The assembly costs can be understood in particular as the assembly costs for fastening the storage housing to the lateral longitudinal member. For example, a particularly complex assembly consisting of a sheet metal holder and a bushing can be dispensed with. This means that the connecting part does not have to be fastened or mounted to the base part or to the bushing part. Furthermore, the costs and weight of the fastening bushing can be kept particularly low.In addition, it can be provided that the base part does not have to be fastened or mounted to the bushing part. The fastening bushing, in particular one-piece, can be transported to an assembly location for fastening to the lateral longitudinal member with particularly little effort. This makes handling of the fastening bushing particularly easy, particularly in body construction. This makes automated installation of the fastening bushing on the body possible with particularly little effort. For example, the fastening bushing can be transported or made available as bulk material in a transport container. This makes transport of the fastening bushing, in particular from the supplier, to a production location of the motor vehicle particularly advantageous and particularly easy.For example, in the case of a conventional fastening bushing in which the base part is not formed integrally with the connecting part or in which the fastening bushing is formed in several parts, it may be necessary to stack an assembly comprising the sheet metal holder and the bushing in a transport container, in particular in a wire mesh box, which is particularly complex. This particularly complex stacking can be achieved, for example, using intermediate layers. This may be necessary, for example, to avoid the risk of the conventional fastening bushing becoming distorted. In contrast, with the fastening bushing according to the invention, due to its geometry or due to the base part being formed integrally with the connecting part, there is no risk of bending. The risk of bending can therefore be kept particularly low with little effort.

[0017] Because the base part and the connecting part or the fastening bushing are formed as a single piece, the fastening bushing can also be used as an identical part in the motor vehicle with particularly little effort. This means that several, identically designed fastening bushings can be used in the motor vehicle to fasten the storage housing to the side longitudinal member of the body of the electrically driven motor vehicle. This makes it possible to keep the manufacturing complexity of the motor vehicle particularly low. For example, this means that no different parts are required for fastening the storage housing on the left and right sides of the motor vehicle. For example, no bushing packages, in particular no bushing packages, in particular no bushing packages of one, two, or three, may be required.This allows the storage housing to be attached to the side longitudinal member with very little effort.

[0018] In addition, it is provided that the connecting part extends at an angle, in particular at a right angle, to the base part. In other words, the connecting part and the base part are arranged obliquely or perpendicular to one another. For example, the base part extends in a first plane and the connecting part extends in a second plane, wherein the planes run obliquely or perpendicular to one another. This means that the planes are arranged relative to one another so as to form the angle, in particular the right angle. Furthermore, it is provided that the fastening bushing can be connected or is connected via the connecting part to an inner sheet metal part of the lateral longitudinal member, in particular by means of a material fit.In other words, the fastening bushing is fastened or held in place, in the fully manufactured state of the motor vehicle, in particular by means of a material bond, for example by welding, to the inner sheet metal part of the lateral longitudinal member. This allows the storage housing to be fastened particularly securely to the lateral longitudinal member. This means that, for example, the strength and / or rigidity of the connection can be particularly increased. In particular, because the connecting part extends at an angle to the base part, the rigidity of the fastening bushing can be particularly increased. Furthermore, a particularly advantageous supporting effect of the fastening bushing on the longitudinal member can be achieved.

[0019] Furthermore, it is provided that the socket part and the base part are connected to one another in one piece via a transition region, in particular directly, which has a greater wall thickness than the base part and the socket part, and in particular the connecting part. In other words, the transition part, which is formed in one piece with the socket part, is arranged, in particular directly, on the socket part, on which transition part the base part, which is formed in one piece with the socket part, is arranged, in particular directly, wherein a wall thickness, in particular a wall thickness of the formed sheet metal, is greater or thicker in the transition region than in the base part and the socket part, and in particular the connecting part. In other words, again in the transition region, a thickness of the formed sheet metal, referred to in particular as sheet thickness, is thicker than in the base part and the socket part, and in particular than in the connecting part.This means that in the transition area, in particular with respect to the base part and the socket part, a, in particular local, material thickening is provided, wherein the socket part and the base part, and in particular the connecting part, are free of the, in particular local, material thickening. This makes it possible to particularly increase the strength, in particular operational strength, of the fastening bushing. Furthermore, the material thickening can counteract an over-elastic tightening torque when tightening or screwing in the screw element, whereby, for example, a particularly elastic and / or plastic deformation of the fastening bushing when tightening or screwing in the screw element can be avoided or reduced. By producing the fastening bushing by means of tube drawing, the local material thickening can be implemented with particularly little effort and / or with particular precision.

[0020] The wall thickness can be understood in particular as a thickness of the fastening bushing, in particular of the sheet metal, wherein the thickness extends obliquely or perpendicularly to the longitudinal extent and the transverse extent of the fastening bushing.

[0021] Alternatively or additionally, at least one kink is provided which is designed to pivot the socket part and the base part, as a result of plastic deformation, about a kink axis running through the kink, in particular in the longitudinal direction of the longitudinal member, relative to the connecting part or the longitudinal member when an accident-related force is applied to the socket part and / or the base part. In other words, the fastening socket has the at least one kink, by means of or at which the socket part and the base part can be rotated about the kink axis relative to the connecting part or the longitudinal member as a result of an accident-related displacement of the socket part and / or the base part due to plastic deformation.In other words, the fastening bushing is designed in such a way that, in the event of a motor vehicle accident, particularly a side-on collision, it bends or flexes specifically around the articulation axis. This minimizes or prevents intrusion of the fastening bushing inward in the transverse direction of the vehicle, and thus toward the storage housing or energy storage device, during the accident. This allows the electrical energy storage device to be particularly well protected in the event of an accident. The articulation axis can be referred to, in particular, as a pivot axis or rotation axis.

[0022] The accident-related force can be understood in particular as a force or a mechanical load which results from the motor vehicle accident or is caused by the motor vehicle accident, in particular directly.

[0023] In a further embodiment, it is provided that the fastening bushing, in particular in its installed position in the motor vehicle, can be or is supported via the connecting part in the vehicle transverse direction, in particular inwards, on the inner sheet metal part of the lateral longitudinal member and / or via the base part in the vehicle vertical direction of the motor vehicle, in particular downwards, on a lower sheet metal part of the longitudinal member, in particular directly. In other words, the connecting part bears against the inner sheet metal part of the lateral longitudinal member, in particular directly, in the vehicle transverse direction, in particular inwards. Alternatively or additionally, the base part bears against the lower part of the sheet metal part of the longitudinal member, in particular directly, in the vehicle vertical direction, in particular downwards.This allows the mounting bushing to be held particularly securely to the longitudinal member, allowing the storage housing to be attached particularly securely to the side longitudinal member using the mounting bushing. In particular, a supporting effect can be achieved in two different directions, allowing the storage housing to be held particularly securely to the side longitudinal member.

[0024] It is preferably provided that the fastening bushing can be or is fastened via the base part to the lower sheet metal part of the longitudinal member, in particular in a materially bonded manner, for example by means of welding.

[0025] The inner sheet metal part can be formed separately from the lower sheet metal part, or the sheet metal parts can be formed together in one piece. Preferably, the inner sheet metal part is arranged, at least in some areas, further inward in the transverse direction of the motor vehicle than the lower sheet metal part. Preferably, the lower sheet metal part is arranged, at least in some areas, below the inner sheet metal part in the vertical direction of the motor vehicle, or further down than the upper sheet metal part.

[0026] In a further embodiment, the socket part has an opening at one end for receiving the screw element and is closed at the other end by a base part of the socket part. In other words, the socket part is designed as a blind hole.

[0027] This can be understood in particular as the following: The receiving space is delimited in the radial direction of the socket part by a wall, in particular the inner circumferential surface, of the socket part. The receiving area is delimited in the axial direction of the socket part at one end by the opening and at the other end by the base part of the socket part. The screw element can be passed through the opening. The socket part or the receiving space is thus open at one end in the axial direction of the socket part. The base part is designed as a wall region of the socket part, whereby the socket part or the receiving space is closed off, in particular completely, by the base part in the axial direction of the socket part. In this way, the ingress of moisture into the socket part can be particularly reliably prevented or kept to a particularly low level.This allows corrosion of the mounting bushing or screw connection to be particularly reliably prevented or minimized. This significantly increases the service life of the mounting bushing or the attachment of the accumulator housing to the longitudinal member.

[0028] Preferably, the socket part is formed in one piece. This means that the wall, in particular the inner circumferential surface, and the base part are formed in one piece or in one part. Thus, the base part is formed in one piece with the wall of the socket part.

[0029] Preferably, the fastening bushing is formed from a sheet metal formed by deep drawing, in particular tube drawing. In other words, the fastening bushing is produced, in particular exclusively, by deep drawing, in particular tube drawing. This can particularly increase the strength of the fastening bushing. For example, during deep drawing, in particular tube drawing, work hardening of the sheet metal or of the fastening bushing can be provided, whereby the strength, in particular fatigue strength, of the fastening bushing can be particularly increased. Furthermore, by deep drawing, in particular tube drawing, a particularly complex component geometry of the fastening bushing can be produced with particularly little effort and / or with particular precision. The fastening bushing produced by tube drawing can in particular be referred to as a tube part.Thus, the fastening bushing can be designed in particular as a tube part.

[0030] In a further embodiment, it is provided that a through-opening for receiving an assembly aid is arranged in the base part. In other words, the base part has the through-opening through which the assembly aid can be passed. This allows the fastening bushing to be mounted on the longitudinal member with particularly little effort. For example, by means of the assembly aid passed through the through-opening, rotation of the fastening bushing, in particular of the base part, relative to the longitudinal member can be prevented. This allows, for example, the fastening bushing to be arranged on the longitudinal member during assembly and to be fixed or held particularly securely for, in particular, a material-to-material connection to the longitudinal member, and in the process secured against, in particular unintentional, rotation of the fastening bushing relative to the longitudinal member.For example, the assembly aid is designed as a mandrel.

[0031] A second aspect of the invention relates to an arrangement of at least one fastening bushing for fastening a storage housing of a, in particular, electrical, energy storage device to a lateral longitudinal member of a body of an electrically powered motor vehicle. Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention, and vice versa.

[0032] The mounting bushing is fastened, in particular directly, to a lower sheet metal part of the lateral longitudinal member by means of a base part of the mounting bushing. A screw element is screwed into a socket part of the mounting bushing that protrudes, in particular directly, from the base part, by means of which the storage housing is fixed. The storage housing is thus fastened or screwed to the longitudinal member via the mounting bushing, in particular laterally.

[0033] In order to be able to fasten the storage housing to the lateral longitudinal member with particularly little effort and particularly securely, it is provided according to the invention that a connecting part which is formed in one piece with the base part is arranged on the base part, which extends at an angle to the base part and via which the fastening bush is connected, in particular directly, to an inner sheet metal part of the lateral longitudinal member.

[0034] Furthermore, it is provided that the socket part and the base part are connected to one another in one piece via a transition part which has a greater wall thickness than the base part and the socket part.

[0035] Alternatively or additionally, the fastening bushing has at least one bending point which is designed to pivot the bushing part and the base part relative to the connecting part as a result of plastic deformation about a bending axis running through the bending point when the bushing part and / or the base part is subjected to an accident-related force.

[0036] Preferably, the accumulator housing, the bushing part, and the lower sheet metal part of the longitudinal member are directly screwed to one another by means of the screw element. In other words, a housing element of the accumulator housing and the lower sheet metal part of the longitudinal member are arranged in the axial direction of the screw element between the base part and a screw head of the screw, whereby the lower sheet metal part of the longitudinal member, the accumulator housing, and the base part are connected to one another by means of a screw connection effected by the screw element, in particular directly. This means that the housing element, the lower sheet metal part of the longitudinal member, and the base part are non-positively connected to one another by the screw element or the screw connection, in particular directly. As a result, the accumulator housing can be attached particularly securely or particularly firmly to the longitudinal member or the body.

[0037] In a further embodiment, at least one second fastening bushing is provided, which is formed separately from the fastening bushing and is fastened, in particular directly, to the lower sheet metal part of the lateral longitudinal member by means of a base part of the second fastening bushing, in particular by means of a material bond. A second screw element, formed separately from the screw element, is screwed into a bushing part of the second fastening bushing that protrudes, in particular directly, from the base part of the second fastening bushing, by means of which the storage housing is fixed.

[0038] In order to be able to attach the storage housing to the lateral longitudinal member with particularly little effort and particularly securely, a connecting part of the second fastening bushing, which is formed in one piece with the base part of the second fastening bushing, is arranged on the base part of the second fastening bushing and extends at a second angle to the base part of the second fastening bushing. The second angle preferably corresponds to the angle, referred to in particular as the first angle, at which the connecting part of the first fastening bushing extends to the base part of the first fastening bushing. Via the connecting part of the second fastening bushing, the second fastening bushing is connected, in particular in a materially bonded manner, to the inner sheet metal part of the lateral longitudinal member, in particular directly.Thus, the storage housing is attached to the lateral longitudinal member via both the first fastening bushing and the second fastening bushing. This allows the storage housing to be held particularly securely to the lateral longitudinal member.

[0039] Preferably, the mounting bushings are designed as identical parts. In other words, the mounting bushings are structurally identical or have an identical design.

[0040] This can be understood in particular as the following: The second fastening bushing has a base part, in particular referred to as the second base part, a socket part, in particular referred to as the second socket part, and a connecting part, in particular referred to as the second connecting part. The base part of the second fastening bushing and the base part of the first fastening bushing are each structurally identical or of identical design. The socket part of the second fastening bushing and the socket part of the first fastening bushing are structurally identical or of identical design. The connecting part of the second fastening bushing and the connecting part of the first fastening bushing are structurally identical or of identical design. As a result, manufacturing costs, in particular assembly costs, of the motor vehicle can be kept particularly low.For example, an assembly process, particularly referred to as assembly production, can be carried out with particularly low effort through the use of identical parts, particularly compared to a conventional fastening concept in which no identical parts are provided. For example, the motor vehicle, in its fully manufactured state, can comprise 14 of the fastening bushings. This means that the accumulator housing is attached or fixed to the side longitudinal member of the body by means of 14 of the fastening bushings.

[0041] Further features of the invention emerge from the claims, the figures, and the description of the figures. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respective specified combination, but also in other combinations or on their own.

[0042] The invention will now be explained in more detail using a preferred embodiment and with reference to the drawings. They show: Fig. 1 is a schematic perspective view of a fastening bushing according to the invention; and Fig. 2 a schematic partial sectional view of an arrangement according to the invention of a fastening bush for fastening a storage housing of an energy storage device to a lateral longitudinal member of a body of an electrically driven motor vehicle; and Fig. 3 a schematic detailed view of the arrangement of Fig. 2; and Fig. 4 a schematic partial sectional view of a fastening bush according to the invention and two assembly aids; and Fig. 5 is a schematic perspective view of a fastening bushing according to the invention and a lateral longitudinal member; and Fig. 6 is a schematic perspective view of several fastening bushings according to the invention and a lateral longitudinal member; and Fig. 7 is a schematic perspective view of a motor vehicle body with several fastening bushings according to the invention; and Fig. 8 is a partial perspective view of a motor vehicle body with several fastening bushings according to the invention; and Fig. 9 a schematic bottom view of a body of a motor vehicle with several fastening bushings according to the invention.

[0043] In the figures, identical or functionally identical elements are provided with the same reference numerals.

[0044] Fig. 1 shows a schematic perspective view of a fastening bushing 1 for fastening a storage housing 2 of an energy storage device to a lateral longitudinal member 3 of a body 4 of an electrically driven motor vehicle. Fig. Figure 2 shows a schematic partial sectional view of an arrangement of the fastening bushing 1 for fastening the storage housing 2 of the energy storage device to the lateral longitudinal member 3 of the body 4 of the electrically driven motor vehicle. Fig. 2 a schematic partial sectional view of the body 4, the storage housing 2 and the fastening bush 1.

[0045] In the Fig. 1 and Fig. 2, the lateral longitudinal member 3 is part of a side sill 5 of the body 4. The side sill 5 has an inner sill part 6 and an outer sill part 7. The inner sill part 6 can in particular be referred to as the “inner sill” and the outer sill part 7 can in particular be referred to as the “outer sill”. The outer sill part 7 is arranged further outwards in the vehicle transverse direction 8 of the motor vehicle than the inner sill part 6. The inner sill part 6 is supported on the lateral longitudinal member 3 in the vehicle transverse direction 8, in particular outwards, in particular directly. The outer sill part 7 is supported on the lateral longitudinal member 3 in the vehicle transverse direction 8, in particular inwards. The sill parts 6, 7 are preferably connected to the lateral longitudinal member 3, in particular directly.The body 4 has a side frame 9, which is preferably connected, in particular directly, to the lateral longitudinal member 3. The side frame 9 is preferably formed as the outer side or outer side surface of the body 4 in the vehicle transverse direction 8. The storage housing 2 is arranged at least partially below the lateral longitudinal member 3 in the vehicle vertical direction 10 of the motor vehicle.

[0046] Fig. 3 shows a schematic partial sectional view of a detail section A, which in Fig. 2. The fastening bushing has a base part 11 and a bushing part 12 protruding from the base part 11. The bushing part 12 is preferably formed integrally with the base part 11. A screw element 13 for fixing the storage housing 2 can be screwed or is screwed into the bushing part 12. Thus, the energy storage device or the storage housing 2 is screwed to the lateral longitudinal member 3 via the fastening bushing 1, in particular from below in the vehicle's vertical direction 10. Preferably, the screw element 13 is designed as a screw. For example, the screw is an M12 screw. For example, the screw element 13 is screwed into the bushing part 12 with an over-elastic tightening torque of one hundred Newton meters, in particular one hundred Newton meters plus ninety percent.

[0047] In order to attach the storage housing 2 to the lateral longitudinal member 3 or the body 4 by means of the fastening bushing 1 particularly securely and with particularly little effort, it is provided that a connecting part 14 which is formed in one piece with the base part 11, in particular directly, is arranged on the base part 11 and extends at an angle 15 to the base part 11. The fastening bushing 1 can be connected or connected to an inner sheet metal part 16 of the lateral longitudinal member 3 via the connecting part 14. Due to the one-piece design, there is no need to assemble the base part 11 and the connecting part 14 or the fastening bushing 1. As a result, the fastening bushing 1 can be mounted on the body 4, in particular on the lateral longitudinal member 3, with particularly little effort.Thus, by means of the fastening bushing 1, for example, an assembly consisting of a sheet metal holder and a bushing can be avoided compared to a conventional fastening bushing.

[0048] The fastening bushing 1 is fastened, in particular directly, to a lower sheet metal part 17 of the lateral longitudinal member 3 by means of the base part 11. This means that the fastening bushing 1 is connected, in particular directly, to the lateral longitudinal member 3 both via the base part 11 and via the connecting part 14. This can be referred to in particular as a two-cut connection of the fastening bushing 1 to the lateral longitudinal member 3. As a result, the storage housing 2 can be held particularly securely on the lateral longitudinal member 3. For example, forces occurring, in particular, in the event of an accident involving the motor vehicle, can be particularly well transmitted into the body 4. Furthermore, the fatigue strength of the fastening bushing 1 or of the fastening of the storage housing 2 to the lateral longitudinal member 3 can be particularly increased.Preferably, the storage housing 2, the socket part 12 and the lower sheet metal part 17 of the longitudinal member 3 are directly screwed together by means of the screw element 13.

[0049] Preferably, the fastening bushing 1 is integrally connected, in particular by welding, to the lower sheet metal part 17 via the base part 11 and / or to the inner sheet metal part 16 via the connecting part 14. For example, the connecting part 14 is welded to the inner sheet metal part 16 of the lateral longitudinal member 3 at at least one first welding point 18. For example, the base part 11 is welded to the lower sheet metal part 17 of the lateral longitudinal member 3 at at least one second welding point 19, in particular spaced from the first welding point 18.

[0050] In the Fig. 2 and Fig. 3, the fastening bushing 1 can be supported or is supported, in particular fastened, via the connecting part 14 in the vehicle transverse direction 8, in particular inwards, on the inner sheet metal part 16 of the lateral longitudinal member 3 and via the base part 11 in the vehicle vertical direction 10, in particular downwards, on the lower sheet metal part 17 of the lateral longitudinal member 3. This means that the base part 11 has at least one support surface 17a, via which the base part 11 is supported on the lower sheet metal part 17 of the lateral longitudinal member 3, in particular directly, in the vehicle vertical direction 10. The connecting part 14 has a support surface 16a, via which the connecting part 14 is supported, in particular directly, on the inner sheet metal part 16 of the lateral longitudinal member 3 in the vehicle transverse direction 8.

[0051] In a further embodiment, the socket part 12 has an opening 20 at one end for receiving the screw element 13 and is closed at the other end by a base part 21 of the socket part 12. This can particularly increase the corrosion resistance of the fastening socket 1, in particular the fastening of the storage housing 2 to the lateral longitudinal member 3. This is particularly the case because the ingress of liquid, for example water, into the socket part 12 can be avoided or kept particularly low. The base part 21 is formed integrally with a wall 22 of the socket part 12, wherein the wall 22 at least predominantly, in particular completely, delimits a receiving space 23 for receiving the screw element 13 in the socket part 12 in the radial direction 24 of the socket part 12.The base part 21 defines the receiving space 23 in the axial direction 25 of the socket part 12, in particular upwards in the vehicle vertical direction 8. Preferably, the axial direction 25 of the socket part 12 runs parallel to the vehicle vertical direction 10.

[0052] In a further embodiment, it is provided that the fastening bushing 1 is formed from a sheet metal part 26 formed by deep drawing, in particular tube drawing. This makes it possible, for example, to achieve a particularly high strength of the fastening bushing 1. Furthermore, the fastening bushing 1 can be manufactured with particularly little effort and with particular precision. For example, the sheet metal part is electrolytically galvanized sheet metal. For example, the sheet metal part 26 is made of steel, in particular CR3-EG50 / 50-U. For example, the thickness of the sheet metal part 26, in particular in the formed state, is 2.5 millimeters. In order to screw the screw element 13 into the bushing part 12 with the hyperelastic tightening torque, it is advantageous if an internal thread formed by the bushing part 12 has a particularly high strength, which can be achieved by work hardening in the tube drawing manufacturing process.

[0053] In a further embodiment, it is provided that the socket part 12 and the base part 11 are connected to one another in one piece via a transition part 27 which has a greater wall thickness 28 than the base part 11 and the socket part 12, and in particular the connecting part 14. In other words, the transition part 27, in particular the sheet metal 26 in the region of the transition part 27, has a first wall thickness 28, referred to in particular as the first wall thickness 28, the base part 11, in particular the sheet metal 26 in the region of the base part 11, has a second wall thickness 29, the socket part 12, in particular the sheet metal 26 in the region of the socket part 12, has a third wall thickness 30 and the connecting part 14, in particular the sheet metal 26 in the region of the connecting part 14, has a fourth wall thickness 31. The first wall thickness 28 is larger or thicker than the second and third wall thicknesses 29, 30, and in particular than the fourth wall thickness 31.This allows the strength and rigidity of the fastening bushing 1 to be significantly increased. This allows, for example, requirements regarding the fatigue strength of the fastening bushing 1 to be met with particular reliability.

[0054] Fig. 4 shows a schematic partial sectional view of the fastening bushing 1 and two assembly aids 32, 33. In a further embodiment, the base part 11 has a through-opening 34 for receiving a first of the assembly aids 32. The through-opening 34 is arranged in a partial region 35 of the base part 11, which is spaced from the support surface 17a in the vertical direction 10 of the motor vehicle. The second of the assembly aids 33 can be arranged or received in the bushing part 12, in particular in the receiving space 23. For example, the fastening bushing 1 is arranged for mounting on the lateral longitudinal member 3. The support surface 17a preferably contacts the lower sheet metal part 17 and the support surface 16a preferably contacts the inner sheet metal part 16 directly. The first assembly aid 32 is guided through the through-opening 34.The second assembly aid 33 is inserted into the bushing part 12, in particular the receiving space 23. The fastening bushing 1 is then connected to the lateral longitudinal member 3, in particular by means of a material fit, for example by welding. The fastening bushing 1 can be secured by means of the assembly aids 32, 33 against any, in particular unintentional, relative rotation of the fastening bushing 1 against the lateral longitudinal member 3. As a result, the fastening bushing 1 can be positioned particularly precisely and securely on the lateral longitudinal member 3. This makes it possible, for example, to keep assembly effort particularly low. Furthermore, a particularly precise connection between the fastening bushing 1 and the lateral longitudinal member 3 can be realized. For example, the respective assembly aid 32, 33 is designed as a respective receiving mandrel.

[0055] Fig. 5 shows a schematic perspective view of the fastening bushing 1 and the lateral longitudinal member 3. In a further embodiment, the fastening bushing 1 has at least one bending point 36, which is designed to pivot the bushing part 12 and the base part 11, and in particular the transition part 27, as a result of plastic deformation about a bending axis 38 running through the bending point 36, in particular in a targeted manner, relative to the connecting part 14 or to the longitudinal member 3 when the bushing part 12 is subjected to an accident-related force 37. The pivoting is in Fig. 5 by means of an arrow 39. The accident-related force 37 is in Fig. 4 and can be referred to in particular as the first force 37. Alternatively or additionally, it is provided that the kink 36 is designed to rotate the bushing part 12 and the base part 11 about the kink axis 38, in particular in a targeted manner, relative to the connecting part 14 or the longitudinal member 3 as a result of plastic deformation, when the base part 11 is subjected to an accident-related force 40, in particular referred to as the second force 40. As a result, an accident-related displacement of the fastening bushing 1, in particular in the event of a side crash, inwards in the vehicle transverse direction 8 can be kept particularly small. As a result, for example, an intrusion of the fastening bushing 1 into the storage housing 2 or into the energy storage device during the accident can be avoided or kept particularly small. As a result, the safety of the motor vehicle can be particularly increased.For example, this allows the crash requirements of the vehicle to be met particularly safely.

[0056] For example, the bending point 36 is designed as a material recess. In the Fig. In the embodiment shown in Figure 5, two of the material recesses are provided. The respective material recess can be understood, in particular, as a respective material recess. Thus, the material recess in the area of ​​the bending point 36 or in the area of ​​the bending axis 38 can cause a targeted weakening of the component so that the fastening bushing 1 can be bent in the event of an accident, particularly in the worst case scenario, and the support surface 17a can deflect upwards in the vertical direction 10 of the vehicle over the, in particular imaginary, bending axis 38.

[0057] In the Fig. 4, the first force 37 runs parallel to the vehicle transverse direction 8. Alternatively, the first force 37 can run obliquely to the vehicle transverse direction 8. In the embodiment shown in Fig. 4, the second force 41 runs obliquely to the vehicle transverse direction 8. Alternatively, the second force 41 can run parallel to the vehicle transverse direction 8.

[0058] For example, it is provided that the fastening bushing 1 has a particularly high or as high as possible rigidity in the vehicle's transverse direction 8. This allows the intrusion of the fastening bushing 1 into the storage housing 2 or the energy storage device to be avoided or minimized in the event of an accident, particularly in a side impact. This can be achieved, for example, by a width extension 42 of the fastening bushing 1, referred to in particular as the width.

[0059] In the Fig. In the exemplary embodiment shown in Figure 5, two collar parts 43, 44 are arranged on the base part 11, which are formed in one piece with the latter and extend at an angle, in particular at a right angle, to the base part 11. The collar parts 43, 44 can in particular be referred to as the first collar part 43 and the second collar part 44, respectively. For example, a third collar part 45, formed in one piece with the base part 11, and a fourth collar part 46, formed in one piece with the base part 11, are arranged on the base part, wherein the third and fourth collar parts 44, 45 extend at a respective angle, in particular a respective right angle, to the base part 11. The respective collar part 43 to 46 can in particular be referred to as a respective collar offset. This allows the rigidity of the fastening bushing 1 to be particularly increased.For example, the fastening bushing 1 can be inserted particularly easily and automatically into a production plant, in particular an assembly plant, by means of the respective collar position 43-46.

[0060] Fig. 6 shows, in a schematic perspective view 3, fastening bushings 1, 1a, 1b and the longitudinal member 3, which are formed separately from one another. The fastening bushings 1, 1a, 1b are formed as identical parts. The fastening bushing 1 can in particular be referred to as the first fastening bushing 1. A second of the fastening bushings 1a has a base part 11a, referred to in particular as the second base part 11a, a socket part 12a, referred to in particular as the second socket part 12a, and a connecting part 14a, referred to in particular as the second connecting part 14a. The third fastening bushing 1b has a base part 11b, referred to in particular as the third base part 11b, a socket part 12b, referred to in particular as the third socket part 12b, and a connecting part 14b, referred to in particular as the third connecting part 14b. The base parts 11, 11a, 11b are structurally identical or of identical design.The socket parts 12, 12a, 12b are structurally identical or have an identical design. The connecting parts 14, 14a, 14b are structurally identical or have an identical design. Thus, for example, the second fastening socket 1a is fastened to the lower sheet metal part 17 of the lateral longitudinal member 3 by means of its base part 11a. A second screw element, formed separately from the screw element 13, is screwed into the socket part 12a of the second fastening socket, which protrudes from the base part 11a of the second fastening socket 1a, and the storage housing 2 is secured by means of said second screw element.In order to be able to attach the storage housing to the lateral longitudinal member 3 particularly securely and with particularly little effort, the connecting part 14a of the second fastening bushing 1a, which is formed in one piece with the base part 11a of the second fastening bushing 1a, is arranged on the base part 11a of the second fastening bushing 1a. This connecting part extends at an angle 15 to the base part 11a of the second fastening bushing 1a and via which the second fastening bushing 1a is connected to the inner sheet metal part 16 of the lateral longitudinal member 3. This applies equivalently to the third fastening bushing 1b, wherein a third screw element, formed separately from the screw elements, is screwed into the bushing part 12b of the third fastening bushing 1a, via which the storage housing 2 is fixed.Because the fastening bushings 1, 1a, 1b are designed as equal dividers, the manufacturing costs, in particular the assembly costs, of the motor vehicle can be kept particularly low.

[0061] Fig. 7 shows a schematic perspective view of the body 4 of the motor vehicle. Fig. 8 shows the body 4 in a schematic and perspective partial view. Fig.9 shows the body 4 in a schematic bottom view. For example, fourteen of the fastening bushings 1, 1a-m are fastened to the body 4. Seven of the fastening bushings 1, 1a-f are fastened to the lateral longitudinal member 3. The remaining seven fastening bushings 1g-m are fastened in a second lateral longitudinal member 3a formed separately from the lateral longitudinal member 3. In the exemplary embodiment, the lateral longitudinal member 3 is formed as a left lateral longitudinal member 3 and the second lateral longitudinal member 3a is formed as a right lateral longitudinal member 3a. Thus, the lateral longitudinal member 3 is arranged on a first side of the body 4 with respect to the vehicle transverse direction 8, and the second lateral longitudinal member 3a is arranged on a second side of the body with respect to the vehicle transverse direction 8. The fastening bushings 1, 1a-m are formed as identical parts.

[0062] For example, the second assembly aid 33 comprises a plurality of mandrels to enable the fastening bushings 1, 1a-g, in particular the seven fastening bushings 1, 1a-f, to be precisely positioned relative to one another on each side of the motor vehicle. This allows the manufacturing costs of the motor vehicle to be kept particularly low. List of reference symbols 1 mounting bushing 1a second mounting bushing 1b third mounting bushing 1c fourth mounting bushing 1d fifth mounting bushing 1e sixth mounting bushing 1f seventh mounting bushing 1g eighth mounting bushing 1h ninth mounting bushing 1i tenth mounting bushing 1j eleventh mounting bushing 1k twelfth mounting bushing 1l thirteenth mounting bushing 1m fourteenth mounting socket 2 storage enclosures 3 longitudinal members 3a second longitudinal member 4 Body 5 side skirts 6 inner sill part 7 outer sill part 8 Vehicle transverse direction 9 side frames 10 Vehicle vertical direction 11 Base part 11a second base part 11b third base part 12 socket part 12a second socket part 12b third socket part 13 Screw element 14 Connecting part 14a second connecting part 14b third connecting part 15 angles 16 inner sheet metal part 16a Support surface 17 lower sheet metal part 17a Support surface 18 first welding point 19 second welding point 20 Opening 21 Base part 22 wall 23 Recording room 24 radial direction 25 axial direction 26 sheet metal 27 Transition section 28 first wall thickness 29 second wall thickness 30 third wall thickness 31 fourth wall thickness 32 first assembly aid 33 second assembly aid 34 passage opening 35 sub-area 36 kink 37 first force 38 Articulated axle 39 Arrow 41 second force 42 Width 43 first collar part 44 second collar part 45 third collar part 46 fourth collar part A Detail

Claims

[1] Fastening bushing (1) for fastening a storage housing (2) of an energy storage device to a lateral longitudinal member (3) of a body (4) of an electrically driven motor vehicle, comprising a base part (11) and a bushing part (12) projecting from the base part (11), into which a screw element (13) for fixing the storage housing (2) can be screwed, wherein a connecting part (14) formed in one piece with the base part (11) is arranged, which connecting part extends at an angle (15) to the base part (11) and via which the fastening bushing (1) can be connected to an inner sheet metal part (16) of the lateral longitudinal member (3), characterized by , that • the socket part (12) and the base part (11) are connected to one another in one piece via a transition part (27) which has a greater wall thickness (28) than the base part (11) and the socket part (12) and / or • the fastening bushing (1) has at least one kink (36) which is designed to pivot the bushing part (12) and the base part (11) relative to the connecting part (14) as a result of plastic deformation about a kink axis (38) running through the kink (36) when the bushing part (12) and / or the base part (11) is subjected to an accident-related force (37, 41). [2] Fastening bush (1) according to claim 1, characterized by that the fastening bushing (1) can be supported via the connecting part (14) in the vehicle transverse direction (8) on the inner sheet metal part (16) of the lateral longitudinal member (3) and / or via the base part (11) in the vehicle vertical direction (10) on a lower sheet metal part (17) of the longitudinal member (3). [3] Fastening bush (1) according to claim 1 or 2, characterized bythat the socket part (12) has an opening (20) at one end for receiving the screw element (13) and is closed at the other end by a base part (21) of the socket part (12). [4] Fastening bush (1) according to one of the preceding claims, characterized by that the fastening bushing (1) is formed from a sheet metal (26) formed by deep drawing. [5] Fastening bush (1) according to one of the preceding claims, characterized by that a through opening (34) for receiving an assembly aid (32) is arranged in the base part (11). [6] An arrangement of at least one fastening bushing (1) for fastening a storage housing (2) of an energy storage device to a lateral longitudinal member (3) of a body (4) of an electrically driven motor vehicle, in which the fastening bushing (1) is fastened to a lower sheet metal part (17) of the lateral longitudinal member (3) by means of a base part (11) and a screw element (13) is screwed into a bushing part (12) projecting from the base part (11), by means of which the storage housing (2) is fixed, wherein a connecting part (14) formed in one piece with the base part (11) is arranged, which connecting part extends at an angle (15) to the base part (11) and by means of which the fastening bushing (1) is connected to an inner sheet metal part (16) of the lateral longitudinal member (3), characterized by , that • the socket part (12) and the base part (11) are connected to one another in one piece via a transition part (27) which has a greater wall thickness (28) than the base part (11) and the socket part (12) and / or • the fastening bushing (1) has at least one kink (36) which is designed to pivot the bushing part (12) and the base part (11) relative to the connecting part (14) as a result of plastic deformation about a kink axis (38) running through the kink (36) when the bushing part (12) and / or the base part (11) is subjected to an accident-related force (37, 41). [7] Arrangement according to claim 6, characterized by that the storage housing (2), the bushing part (12) and the lower sheet metal part (17) of the longitudinal member (3) are directly screwed together by means of the screw element (13). [8] Arrangement according to claim 6 or 7, characterized bythat a second fastening bushing (1a) formed separately from the fastening bushing (1) is fastened to the lower sheet metal part (17) of the lateral longitudinal member (3) by means of a base part (11a) of the second fastening bushing (1a), and a second screw element formed separately from the screw element (13) is screwed into a bushing part (12a) of the second fastening bushing (1a) protruding from the base part (11a) of the second fastening bushing (1a), by means of which the storage housing (2) is fixed, and on the base part (11a) of the second fastening bushing (1a) there is arranged a connecting part (14a) of the second fastening bushing (1a), which is formed in one piece with the base part (11a) of the second fastening bushing (1a), which extends at the angle (15) to the base part (11a) of the second fastening bushing (1a) and by means of which the second fastening bushing (1a) is connected to the inner sheet metal part (16) of the lateral longitudinal member (3) is connected,wherein the fastening bushings (1, 1a) are designed as identical parts.,

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