Housing assembly for a drive assembly of a vehicle which can be driven by muscle power and / or motor power

Abstract

The invention relates to a housing assembly (15) for a drive assembly (10) of a vehicle (100) which can be driven by muscle power and / or motor power, comprising a first housing element (1) and a second housing element (2), wherein the two housing elements (1, 2) can be connected together and are designed to enclose a receiving chamber (50) in the connected state, and the two housing elements (1, 2) are formed as molded parts.

Description

[0001] Description

[0002] title

[0003] Housing arrangement for a drive arrangement of a vehicle operable with muscle power and / or motor power

[0004] State of the art

[0005] The present invention relates to a housing arrangement for a drive arrangement of a vehicle operable with muscle power and / or motor power, a drive arrangement, and a vehicle operable with muscle power and / or motor power.

[0006] Drive assemblies for vehicles powered by human and / or motor power, such as electric bicycles, are known. These comprise a housing within which components such as the motor, electronic components, transmission, bearings, and the like are arranged. The housing is intended to protect these components and to hold them. Such housings are often made of cast aluminum or magnesium.

[0007] Disclosure of the invention

[0008] The housing arrangement according to the invention with the features of claim 1 is distinguished by a particularly cost-effective and lightweight construction. In addition, an optimized mounting of components of the drive arrangement, such as bearings and motor, can be provided. This is achieved according to the invention by a housing arrangement comprising a first housing element and a second housing element. The two housing elements are designed to be connectable to one another. In addition, the two housing elements are designed to enclose a receiving space when connected. The two housing elements are designed as formed parts. In particular, components which are produced, preferably exclusively, by forming manufacturing processes are considered to be formed parts.

[0009] In other words, a housing arrangement is provided which has at least two housing elements which, when connected, can form a closed housing within which the receiving space is arranged. The housing elements are designed as formed parts, thereby providing a particularly advantageous design of the housing arrangement.

[0010] The housing arrangement thus offers the advantage of a particularly simple and cost-effective construction in that the two housing elements are provided as formed parts. This offers the particular advantage that the production of essential parts of the housing arrangement can be made in a particularly simple and cost-effective manner, in particular by forming manufacturing processes such as punching, bending, pressing, deep drawing or the like. It is also advantageous that predetermined geometries of the housing elements can be produced in a simple and cost-effective manner and, at the same time, with particularly close tolerances. Furthermore, metal sheets, for example, can be used as semi-finished products from which the housing elements can be manufactured, whereby the production of the housing arrangement can be further simplified and costs reduced.This means that, for example, thin-walled components can also be used as housing elements, which enables a particularly low weight and a compact geometry of the housing arrangement.

[0011] The subclaims contain preferred developments of the invention.

[0012] Preferably, the two housing elements are formed as deep-drawn components. This means that each of the two housing elements is manufactured by deep-drawing. This enables particularly time-efficient and cost-effective production of the housing elements, while also allowing for particularly tight geometric tolerances. For example, fastening areas for drive components and / or bearing seats can be easily and cost-effectively provided as integral components of the housing elements with particularly tight positional tolerances.

[0013] Particularly preferably, each of the two housing elements is formed from a sheet metal, preferably aluminum or steel. This allows for a particularly simple and flexible manufacturing process for the housing elements, providing high mechanical strength while maintaining low weight. In particular, the housing elements can thus particularly reliably perform a protective function for components within the receiving space, while simultaneously providing fastening and holding functions for the components.

[0014] Preferably, the first housing element and the second housing element form a substantially closed housing when connected. An outer wall of the housing is formed exclusively by the first housing element and the second housing element. In other words, the closed housing is formed entirely by the two housing elements. A substantially completely closed housing is preferably one that is completely closed, in particular fluid-tight, in particular with the exception of openings through which components of the drive arrangement, such as shafts, can protrude. Preferably, the two housing elements are connected to one another at a connecting region, wherein a completely fluid-tight connection between the two housing elements is present over the entire connecting region.This makes it possible to provide a housing with a particularly simple, cost-effective and lightweight design, which offers reliable protection for components arranged within the housing space.

[0015] Further preferably, each of the two housing elements is designed for attachment to a vehicle frame of a vehicle that can be operated using muscle power and / or motor power. In particular, each of the two housing elements has at least one attachment area for this purpose. The attachment area can preferably have a through-opening through which a attachment element can be passed, so that, for example, a screw connection to the vehicle frame is possible. Particularly preferably, the housing arrangement further comprises at least one support element, which is arranged between the two housing elements and by means of which, in particular, the two housing elements are supported against one another. Preferably, at least two support elements are provided. The support element can thus provide stiffening of the housing arrangement in order to enable a particularly robust construction.

[0016] Preferably, at least one of the support elements is designed as a sleeve, and preferably made of metal, for example, aluminum or steel. This means that the support element has a particularly hollow-cylindrical geometry. This enables particularly robust support with low weight. Furthermore, for example, a connection of the housing elements and / or a fastening of the housing elements to the vehicle frame can be enabled by inserting a connecting element, such as a screw, through the support element. This enables a particularly simple and robust construction in the assembled state.

[0017] The housing arrangement preferably comprises exactly two or exactly three support elements. This enables particularly robust fastening while ensuring a simple and cost-effective construction with few components. A housing arrangement with exactly three support elements is particularly advantageous, which are each arranged in particular on outer regions of the housing arrangement and preferably as far apart as possible. Particularly preferably, exactly two of the three support elements are designed as sleeves. This means that the housing arrangement can be fastened to the vehicle frame at exactly two points. The design with three support elements thus makes it possible to provide a rigid, three-dimensional structure, for example similar to a "truss structure", which enables a particularly stable arrangement with low weight.

[0018] The housing arrangement preferably further comprises a third housing element which, when the two housing elements are connected, is arranged within the receiving space. The third housing element is preferably designed in sheet metal form. For example, the third housing element can also be designed as a formed part, preferably as a deep-drawn component. In particular, the third housing element is fixed to the first housing element and / or the second housing element. The third housing element can in particular be designed to hold components, in particular bearings, of the drive arrangement and / or for grease guidance. For example, the third housing element can divide the receiving space into a plurality of sub-receiving spaces. This makes it possible to provide a particularly flexible design for meeting various requirements of the drive arrangement in a simple and cost-effective manner.

[0019] Further preferably, the third housing element is made of plastic and / or metal. Depending on the requirements, this allows for a particularly flexible design of the housing assembly while remaining easy to manufacture.

[0020] In one variant, the housing arrangement can further comprise a further housing element, wherein the first housing element, the second housing element and the further housing element form a substantially closed housing when connected. An outer wall of the housing is formed exclusively by the first housing element, the second housing element and the further housing element. The further housing element, like the first housing element and the second housing element, is in particular a formed part. It can be, for example, a deep-drawn component. Alternatively, the further housing element can also be a stamped part. It can be formed from sheet metal. The further housing element can, for example, be designed to cover an opening in the first housing element or the second housing element. For example, the first housing element or the second housing element can have an opening for mounting at least one component of a motor.After the motor has been assembled, the opening can be covered with the additional housing element such that an outer wall of the housing is completely formed by the first housing element, the second housing element, and the additional housing element. The additional housing element forms a type of motor cover.

[0021] Particularly preferably, the housing arrangement further comprises at least one bearing receptacle, which is designed to hold a bearing, in particular for a shaft. The bearing receptacle is formed, in particular exclusively, in one of the housing elements. Preferably, at least one bearing receptacle is formed in each of the housing elements. In other words, the bearing receptacle is an integral component of at least one of the housing elements. This makes it possible to provide a particularly precise and robust fastening of the bearings of the drive arrangement. In particular, the bearing is provided for the rotatable mounting of a shaft, such as a treadle shaft, relative to the housing elements.

[0022] Preferably, the two housing elements are configured to at least partially overlap in a connecting region when connected. In other words, the two housing elements overlap at the connecting region where they are connected to each other. In particular, one of the two housing elements can, for example, be partially inserted into the other. This makes it possible to provide a robust and fluid-tight housing in a particularly simple and cost-effective manner.

[0023] The housing arrangement preferably further comprises a sealing element, which is arranged between the two housing elements when the housing elements are connected. In particular, the sealing element is designed and arranged circumferentially around the connection area and / or around the entire receiving space. The sealing element can be formed, for example, from an elastomer. This makes it easy to provide a reliably fluid-tight housing. Preferably, the sealing element can be substantially H-shaped, with each of the housing elements being inserted into the sealing element.

[0024] Further preferably, the two housing elements are connected to one another by means of an adhesive connection and / or by means of a screw connection and / or by means of a clip connection. A clip connection is considered, in particular, to be a detachable, positive-locking connection which, for example, has a locking mechanism. Furthermore, the invention leads to a drive arrangement for a vehicle operable by muscle power and / or motor power, comprising the described housing arrangement and a motor. The motor is preferably an electric motor. The motor is attached, in particular exclusively, to at least one of the housing elements, in particular mechanically fixed.

[0025] Furthermore, the invention relates to a vehicle that can be operated with muscle power and / or motor power, in particular an electric bicycle, comprising the described drive arrangement.

[0026] Short description of the drawings

[0027] The invention is described below using exemplary embodiments in conjunction with the figures. In the figures, functionally identical components are identified by the same reference numerals. Here:

[0028] Figure 1 is a simplified schematic view of a vehicle with a drive arrangement according to a first embodiment of the invention,

[0029] Figure 2 is a sectional view of the drive arrangement of Figure 1,

[0030] Figure 3 is a detailed sectional view of the drive arrangement of Figure 1,

[0031] Figure 4 is a perspective detailed view of the drive arrangement of Figure 1,

[0032] Figure 5 is a further detailed sectional view of the drive arrangement of Figure 1,

[0033] Figure 6 is a perspective detailed view of the drive arrangement of Figure 1,

[0034] Figure 7 is a perspective partial sectional view of a drive arrangement according to a second embodiment of the invention, Figure 8 is a detailed sectional view of the drive arrangement of Figure 7,

[0035] Figure 9 is a further detailed sectional view of the drive arrangement of Figure 7,

[0036] Figure 10 is a detailed step view of a drive arrangement according to a third embodiment of the invention,

[0037] Figure 11 is a sectional view of a drive arrangement according to a fourth embodiment of the invention,

[0038] Figure 12 is a sectional view of a drive arrangement according to a fifth embodiment of the invention,

[0039] Figure 13 is a sectional view of a drive arrangement according to a sixth embodiment of the invention,

[0040] Figure 14 is a sectional view of a drive arrangement according to a seventh embodiment of the invention, and

[0041] Figure 15 is a sectional view of a drive arrangement according to an eighth embodiment of the invention, and

[0042] Figure 16 is a perspective view of a drive arrangement according to a ninth embodiment of the invention, and

[0043] Figure 17 is a sectional view of a drive arrangement according to a further embodiment of the invention.

[0044] Preferred embodiments of the invention

[0045] Figure 1 shows a simplified schematic view of a vehicle 100 comprising a drive assembly 10 according to a preferred embodiment of the invention. The vehicle 100 is a vehicle operable by muscle power and / or motor power, specifically an electric bicycle. The drive assembly 10 comprises a motor 70 (see Figure 2), which is in particular an electric motor. The motor 70 can be supplied with electrical energy by means of an electrical energy storage device 109 of the electric bicycle 100.

[0046] The drive assembly 10 is arranged in the region of a bottom bracket of the electric bicycle 100. The motor torque generated by the motor 70 can provide motor assistance to the pedaling force generated by the muscular power of a rider of the electric bicycle 100.

[0047] The drive arrangement 10 is shown in detail in Figures 2 to 6 and is described in detail below.

[0048] The drive assembly 10 includes a housing assembly 15 configured to hold the motor 70. Furthermore, the housing assembly 15 is provided to protect and support other components, such as a transmission, bearings, and electronic components. The housing assembly 15 is further provided for attachment to a vehicle frame 101 of the electric bicycle 100. For this purpose, the housing assembly 15 can preferably be screwed directly to the vehicle frame 101.

[0049] The motor 70 is configured to generate a motor torque that can be transmitted to an output shaft 102. The output shaft 102 is connected in a rotationally fixed manner to an output element 107, which in the illustrated embodiment is a chainring, and also to cranks 104, which the rider of the electric bicycle 100 can operate using muscle power.

[0050] The motor 70 is arranged coaxially with the output shaft 102. Torque is transmitted from the motor 70 to the output shaft 102 via a gearbox 4. The gearbox 4 is designed as a two-stage spur gear transmission and includes an intermediate shaft 45. An intermediate shaft axis 45a of the intermediate shaft 45 is arranged parallel to the output axis 105 of the output shaft 102. Torque is transmitted from the motor 70 to the output shaft 102 via the intermediate shaft 45 by means of corresponding spur gears of the gearbox 4.

[0051] The housing arrangement 15 comprises a housing 30, which is designed as a solid sheet metal housing. For this purpose, the housing arrangement 15 comprises a first housing element 1 and a second housing element 2. The two housing elements 1, 2 are each designed as one-piece sheet metal parts which are connected to one another. In detail, the housing elements 1, 2 are deep-drawn components, preferably made of aluminum and / or steel, which are produced by deep-drawing. In the connected state, the two housing elements 1, 2 together enclose a receiving space 50, within which the motor 70 and the other components of the drive arrangement 10 are arranged.

[0052] The receiving space 50 is essentially completely enclosed in a fluid-tight manner by the two housing elements 1, 2, with the exception of through-openings that penetrate the housing elements 1, 2 and through which an output shaft 102 and a plug element 111 protrude. The plug element 111 can, for example, be provided for connection to electrical lines for signal transmission and / or power supply. For example, a circuit board 112, which is connected to the plug element 111, can thereby be electrically connected to components of the electric bicycle 100 outside the housing 30. These through-openings are preferably also sealed in a fluid-tight manner on the respective protruding element.

[0053] The output shaft 102 and the intermediate shaft 45 are each rotatably mounted in the housing 30 by means of two bearings 60. Each of the bearings 60 is held in a corresponding bearing receptacle 6. Each bearing receptacle 6 is formed directly by a deep-drawn recess in one of the housing elements 1, 2, as can be seen particularly in Figure 5.

[0054] Each bearing 60 can be pressed directly into the bearing receptacle 6, i.e., into the corresponding recess. Alternatively, the bearings 60, such as the output-side bearing 60 on the output shaft 102, can be pressed in indirectly, for example, via an additional bearing ring. Furthermore, the bearings 60 can be arranged inside the housing 30, i.e., within the receiving space 50, or alternatively on the outside of the housing 30, as in the case of the bearing 60 of the output shaft 102 facing away from the output. In addition, the press connection between the bearing receptacle 6 and the bearing 60 can be provided either on the inner ring or, alternatively, on the outer ring of the corresponding bearing 60. Because the bearing receptacles 6 are formed directly by deep-drawn areas of the housing elements 1, 2, a particularly simple, cost-effective, and lightweight construction of the housing arrangement 15 can be provided.In particular, additional elements for holding the bearings 60 can be dispensed with. Furthermore, the possibility of designing the bearing supports 6 as deep-drawn areas offers the advantage of enabling particularly precise positioning of the bearings 60 with particularly tight positional tolerances, while the bearing supports 6 can also be manufactured in a simple, time-efficient, and cost-effective manner.

[0055] The two housing elements 1, 2 are connected to one another in a fluid-tight manner at a connecting region 35 (see Figure 3). At the connecting region 35, the two housing elements 1, 2 are designed to overlap. In detail, the first housing element 1 has an overlap region 1a that overlaps an end region of the second housing element 2 facing the first housing element 1. In particular, the end region of the second housing element 2 is arranged radially within the overlap region 1a.

[0056] Figure 4 shows a perspective detailed view of the drive assembly 10 of the first embodiment, illustrating further details of the connection between the two housing elements 1, 2. A clip connection 35b is shown in detail, which connects the two housing elements 1, 2 in a form-fitting manner. The clip connection 35b comprises an elastic locking lug 35c on the first housing element 1, which can engage a recess 35e in the second housing element 2.

[0057] Figure 4 also shows a screw connection 35d, which additionally mechanically connects the two housing elements 1, 2. This provides a particularly reliable and robust connection between the housing elements 1, 2.

[0058] Figure 6 shows a perspective detailed view of the drive assembly 10 of Figure 1. It shows the first housing element 1 together with support elements 4 of the housing assembly 15, which are arranged between the two housing elements 1, 2. The support elements 4 are provided for the mechanical reinforcement of the housing assembly 15 and as parts of the fastening option of the housing assembly 15 to the vehicle frame 101.

[0059] The support elements 4 are provided for mechanically supporting the two housing elements 1, 2 against each other. In particular, each support element 4 has a flange 4a for each housing element 1, 2, against which the corresponding housing element 1, 2 can rest in the axial direction.

[0060] In detail, the housing arrangement 15 comprises precisely three support elements 4. The support elements 4 each extend parallel to the output axis 105 and are arranged as far apart as possible with respect to a radial direction of the output axis 105, i.e., in each case at the outermost regions of the housing arrangement 15. The two upper support elements 4 are designed as sleeves, preferably made of aluminum or steel. As a result, each of the two upper support elements 4 has a through-opening through which a screw 81 of a screw connection 80 (see, for example, also Figure 7, second exemplary embodiment) can be inserted. By means of this screw connection 80, the housing arrangement 15 can be screwed to the vehicle frame 101. The third lower support element 4 is designed as a simple cylindrical pin in order to enable a simple and cost-effective construction.By means of the support elements 4, the two opposite walls of the housing elements 1, 2 can be supported against each other. Furthermore, the design with a total of three support elements 4 can provide a type of truss structure, which enables a particularly rigid construction and fastening of the housing arrangement 15.

[0061] Figure 7 shows a perspective partial sectional view of a drive arrangement 10 according to a second exemplary embodiment of the invention in the state mounted on the vehicle frame 101. Figure 7 shows the screw connection 80, which is preferably provided in an analogous manner in the first exemplary embodiment of Figures 1 to 6. The screw connection 80 is also shown in enlarged detail in Figure 8. The screw connection 80 comprises a through-bolt 81, which is inserted through the sleeve-shaped support element 4, and thus through the entire drive arrangement 10. The through-bolt 81 is screwed into a nut 82, which is arranged in a recess in the vehicle frame 101 and is preferably held in a rotationally fixed manner.On a side opposite the nut 82, a screw head 81a of the through-bolt 81 is axially movable in a tolerance compensation element 83, which is arranged in a recess of the vehicle frame 101. The tolerance compensation element 83 can be designed, for example, as a plain bearing bush with a rubber overmold in order to provide an axially movable and radially play-free mounting of the screw head 81a. Furthermore, the screw connection 80 comprises a spacer element 84 at each axial end, which is arranged between the respective housing element 1, 2 and the vehicle frame 101. Each spacer element 84 is preferably made of steel.Each spacer element 84 can comprise a plurality of axially protruding tips 84a, which are provided to dig plastically into the vehicle frame 101 when the housing assembly 15 is screwed to the vehicle frame 101, thus providing a certain form-fitting connection. This allows for a particularly reliable and robust screw connection.

[0062] The second exemplary embodiment in Figure 7 essentially corresponds to the first exemplary embodiment in Figures 1 to 6, with the difference of an alternative design of the connecting region 35. The connecting region 35 of the second exemplary embodiment is shown in detail in Figure 8. In the second exemplary embodiment, an overlap of the two housing elements 1, 2 is also provided in the connecting region 35, wherein in this case they are connected to one another by means of an adhesive connection and / or a welded connection. Preferably, an elastic sealing element can additionally be arranged in this overlapping region, for example by being pressed radially and / or axially. This makes it possible to provide a particularly reliable, tight connection between the two housing elements 1, 2 in a simple manner.Furthermore, the second embodiment of Figure 7 differs from the first embodiment of Figures 1 to 6 in the design of the bearing of the intermediate shaft 45. In detail, the drive assembly 10 in the second embodiment comprises a bearing pin 45b, which holds one of the two bearings 60 of the intermediate shaft 45, in particular on the inner ring. In particular, the intermediate shaft 45 is mounted via the outer ring of this bearing 60. The bearing pin 45b is pressed into an opening in the second housing element 2 by means of a press connection 45c. This allows a precise design of the bearing with regard to small tolerances to be provided by means of an alternative, simple and cost-effective construction.

[0063] Figure 10 shows a detailed sectional view of a drive arrangement according to a third exemplary embodiment of the invention. The third exemplary embodiment essentially corresponds to the first exemplary embodiment of Figures 1 to 6 with an alternative design of the connecting region 35. In detail, the connecting region 35 in the third exemplary embodiment comprises an additional sealing element 7, which is arranged between the two housing elements 1, 2 and is designed to run circumferentially around the entire receiving space 50. The sealing element 7 is made of an elastomer and has an H-shaped geometry. The two housing elements 1, 2 are partially inserted into the sealing element 7. This enables simple assembly and particularly reliable sealing of the housing arrangement 15.In addition, the sealing element 7 can provide a damping effect because the two housing elements 1, 2 are not in direct mechanical contact with each other, so that, for example, the transmission of vibrations and oscillations can be reduced.

[0064] Figure 11 shows a sectional view of a drive arrangement 10 according to a fourth exemplary embodiment of the invention. The fourth exemplary embodiment essentially corresponds to the first exemplary embodiment of Figures 1 to 6, with the difference of an alternative arrangement of the motor 70, as well as with an additional third housing element 3. In the fourth exemplary embodiment of Figure 11, the motor 70 is arranged parallel to the output shaft 102 and next to the output shaft 102. In detail, a motor axis 75a, along which a motor shaft 75 extends, is arranged parallel to and at a predetermined distance from the output axis 105. The motor 70 is located on a left-hand side of the drive arrangement 10 with respect to the direction of travel A (see also Figure 1), i.e., facing away from the output, i.e., on a side of the drive arrangement 10 opposite the output element 107 (on the right in Figure 11, not shown).

[0065] The third housing element 3 is arranged within the receiving space 50 and in particular forms a subdivision of the receiving space 50. As a result, the third housing element 3 causes grease reservoirs to be formed and grease to be guided within the receiving space 50, so that, for example, optimized lubrication of the transmission 4 can be provided.

[0066] In addition, the third housing element 3 forms a bearing shell for holding bearings 60. In detail, one of the two bearings 60 of the intermediate shaft 45 is held in a bearing receptacle 6a and a bearing 60 of the motor shaft 75 is held in another bearing receptacle 6a.

[0067] The third housing element 3 can be made of a plastic, for example as an injection-molded component, in order to provide simple and cost-effective production with flexible geometry design and low weight.

[0068] Preferably, the third housing element 3 is connected to the first housing element 1 by means of a connection 30. The connection 30 can be, for example, an adhesive connection or a press connection.

[0069] Figure 12 shows a sectional view of a drive arrangement 10 according to a fifth exemplary embodiment of the invention. The fifth exemplary embodiment essentially corresponds to the fourth exemplary embodiment in Figure 11, with the difference of an alternative design of the third housing element 3. In the fifth exemplary embodiment in Figure 12, the third housing element 3 is made of sheet metal, in particular of aluminum or steel, and is designed as a deep-drawn component. In particular, the third housing element 3 is connected to the first housing element 1 by means of a connection 30, which can be a press connection or a welded connection. This makes it possible to provide an alternative construction of an additional bearing shell in the interior of the receiving space 50, which has an advantageous effect on the assembly, robustness, and flexibility of the housing arrangement 15.

[0070] An alternative embodiment to Figure 12 is shown in Figure 17. In contrast to the variant shown in Figure 12, the drive arrangement 10 of Figure 17 has a further housing element 12. The further housing element 12, together with the first housing element 1 and the second housing element 2, forms a substantially closed housing 30 when connected. An outer wall of the housing 30 is formed exclusively by the first housing element 1, the second housing element 2 and the further housing element 12. The further housing element 12 is formed from a formed part. It is connected to the first housing element 1, for example, by welding. Alternatively, it can be connected to the first housing element 1 by gluing or screwing. The further housing element 12 covers an opening 13 in the first housing element 1. The motor 70 or components of the motor 70 can, for example, be mounted in the housing 30 via the opening 13.After the motor 70 has been assembled, the opening 13 is covered with the additional housing element 12 such that an outer wall of the housing 30 is completely formed by the first housing element 1, the second housing element 2, and the additional housing element 12. The additional housing element 12 forms a type of motor cover.

[0071] Figure 13 shows a sectional view of a drive assembly 10 according to a sixth embodiment of the invention. The sixth embodiment essentially corresponds to the fourth embodiment of Figure 11, with the difference of an alternative design of the housing of the motor 70. In the sixth embodiment of Figure 13, the housing assembly 15 further comprises an additional motor housing 17, within which the motor 70 is arranged.

[0072] The motor housing 17 is also made of sheet metal and is designed as a deep-drawn component.

[0073] The motor housing 17 with the motor 70 accommodated therein can be attached to the first housing element 1 from outside the receiving space 50. The motor shaft 75 protrudes through the first housing element 1 inward into the receiving space 50. The motor housing 17 is connected to the first housing element 1 by means of a further connection 18, which can be a press connection and / or a welded connection.

[0074] The additional motor housing 17 enables a particularly flexible design of the drive assembly 10. For example, this allows for a particularly simple scaling of the motor 70 without having to adapt the entire housing assembly 15. Thus, various motors 70, which may have different axial lengths, can be arranged in the housing assembly 15 in a particularly simple manner.

[0075] Figure 14 shows a sectional view of a drive assembly 10 according to a seventh embodiment of the invention. The seventh embodiment essentially corresponds to the second embodiment of Figures 7 to 9, with an alternative arrangement of the motor 70. In the seventh embodiment of Figure 14, the motor 70 is arranged on a side facing the output. This means that the motor 70 is located closer to the output element 107 than the other components of the drive assembly 10, such as in particular the transmission 4. Thus, the motor 70 is arranged to the right with respect to the direction of travel A.

[0076] Figure 15 shows a sectional view of a drive arrangement 10 according to an eighth embodiment of the invention. The eighth embodiment essentially corresponds to the fourth embodiment of Figure 11, with an alternative arrangement of the motor 70. In the eighth embodiment of Figure 15, the motor 70 is arranged on a side facing the output. This means that the motor 70 is located closer to the output element 107 (on the right in Figure 15, not shown) than the other components of the drive arrangement 10, in particular the transmission 4. As a result, the motor 70 is located on a right-hand side of the drive arrangement 10 with respect to the direction of travel A.

[0077] Figure 16 shows a perspective detailed view of a drive arrangement 10 according to a ninth exemplary embodiment of the invention. The ninth exemplary embodiment essentially corresponds to the sixth exemplary embodiment of Figure 13, with the difference of an alternative design of the motor housing 17, and additionally an alternative fastening to the frame interface. In the ninth exemplary embodiment of Figure 16, the motor housing 17 is designed as a cast component, in detail a die-cast component made of aluminum. In this case, the motor housing 17 additionally comprises a plurality of cooling fins 17a on its radially outer surface, which project radially outward. This makes it possible to provide an enlarged surface area on the outside of the motor housing 17, whereby improved air cooling of the motor housing 17 and thus also improved heat dissipation from the motor 70 can be provided.In particular, the cooling fins 17a can be formed in the circumferential direction completely around the entire outer side of the motor housing 17 in order to be able to provide particularly effective cooling.

[0078] In addition, the drive assembly 10 of the ninth exemplary embodiment comprises additional fastening tabs 90, by means of which an indirect fastening to the vehicle frame 101 can be carried out. The fastening tabs 90 are in the form of sheet metal, for example as bent sheets. In total, the drive assembly 10 comprises four fastening tabs 90. Two fastening tabs 90 can be arranged on opposite sides of the housing assembly 15 and fastened to an outer side of the respective housing element 1, 2. Each of the fastening tabs 90 is preferably fastened to the corresponding housing element 1, 2 by means of a welded connection. The fastening tabs 90 can be flexibly fastened at various positions on the outer side of the housing elements 1, 2, which, for example, enables a simple radial tolerance compensation of the fastening of the drive assembly 10 to the vehicle frame 101.The drive assembly 10 can be fastened by fastening the fastening tabs 90 to the vehicle frame 101, for example, on respective fastening axes 95 defined by the fastening tabs 90. The fastening tabs 90 can preferably be screwed to the vehicle frame 101 at the fastening axes 95. By designing the fastening tabs 90 as simple metal sheets, tolerance compensation of the fastening can be made particularly simple and cost-effective by adapting only the fastening tabs 90. The curved geometry of the fastening tabs 90 can, for example, also easily enable axial tolerance compensation 96, as indicated on the fastening tab 90 in Figure 16, top right. Thus, particularly flexible assembly with simple tolerance compensation can be provided cost-effectively and with a simple design.Since the fastening tabs 1, 2 can also be made of sheet metal and thus, for example, can have similar mechanical properties to the housing elements 1, 2, a particularly simple and cost-effective production and mechanical design of the drive arrangement 10 can also be achieved.

Claims

Claims 1. Housing arrangement for a drive arrangement (10) of a vehicle (100) operable with muscle power and / or motor power, comprising: - a first housing element (1), and - a second housing element (2), - wherein the two housing elements (1, 2) are connectable to one another and are designed to enclose a receiving space (50) in the connected state, and - wherein the two housing elements (1, 2) are designed as formed parts.

2. Housing arrangement according to claim 1, wherein the two housing elements (1, 2) are deep-drawn components.

3. Housing arrangement according to one of the preceding claims, wherein the two housing elements (1, 2) are each formed from a sheet metal.

4. Housing arrangement according to one of the preceding claims, wherein the first housing element (1) and the second housing element (2) form a substantially closed housing (30) in the connected state, and wherein an outer wall of the housing (30) is formed exclusively by the first housing element (1) and the second housing element (2).

5. Housing arrangement according to one of the preceding claims, wherein each of the housing elements (1, 2) is adapted for attachment to a vehicle frame (101) of a vehicle (100) operable with muscle power and / or motor power.

6. Housing arrangement according to one of the preceding claims, further comprising at least one support element (4) which is arranged between the two housing elements (1, 2).

7. Housing arrangement according to claim 6, wherein at least one support element (4) is designed as a sleeve.

8. Housing arrangement according to one of claims 6 or 7, comprising exactly two or exactly three support elements (4).

9. Housing arrangement according to one of the preceding claims, further comprising a third housing element (3) which is arranged within the receiving space (50) in the connected state of the two housing elements (1, 2).

10. Housing arrangement according to claim 9, wherein the third housing element (3) is formed from plastic and / or metal. 11 . Housing arrangement according to one of the preceding claims, further comprising a further housing element (12), wherein the first housing element (1), the second housing element (2) and the further housing element (12) form a substantially closed housing (30) in the connected state, and wherein an outer wall of the housing (30) is formed exclusively by the first housing element (1), the second housing element (2) and the further housing element (12).

12. Housing arrangement according to one of the preceding claims, further comprising at least one bearing receptacle (6) which is designed to hold a bearing (60), wherein the bearing receptacle (6) is formed, in particular exclusively, in a housing element (1, 2).

13. Housing arrangement according to one of the preceding claims, wherein the two housing elements (1, 2) in the connected state are designed to overlap in a connecting region (35).

14. Housing arrangement according to one of the preceding claims, comprising a sealing element (7) which is arranged in the connected state between the two housing elements (1, 2).

15. Housing arrangement according to one of the preceding claims, wherein the two housing elements (1, 2) are connected to one another by means of an adhesive connection and / or by means of a screw connection (35d) and / or by means of a clip connection (35b).

16. Drive arrangement of a vehicle (100) operable with muscle power and / or motor power, comprising: - a housing arrangement (15) according to one of the preceding claims, and - a motor (70) which is attached to at least one of the housing elements (1, 2).

17. A vehicle operable by muscle power and / or motor power, in particular an electric bicycle, comprising a drive arrangement (10) according to claim 16.

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