Motor mounting assembly

Abstract

An installation assembly for a vehicle includes an inner tube, a damping element coupled to the inner tube, and a housing containing the inner tube and the damping element. The damping element is made of a microcellular polyurethane material. The inner tube includes a first tapered surface, a second tapered surface, a third tapered surface, and a fourth tapered surface. The damping element includes a first axially extending protrusion extending outward from the first tapered surface, a second axially extending protrusion extending outward from the second tapered surface, a third axially extending protrusion extending outward from the third tapered surface, and a fourth axially extending protrusion extending outward from the fourth tapered surface. The housing presses each of the first, second, third, and fourth axially extending protrusions toward the respective tapered surface.

Description

[0001] Cross-referencing related applications

[0002] This application claims the benefit of U.S. Provisional Application No. 63 / 412,732, filed October 3, 2022. The entire disclosure of the aforementioned application is incorporated herein by reference. Technical Field

[0003] This application relates to a vibration damping mounting assembly. Background Technology

[0004] This section provides background information related to the content of this application, which is not necessarily prior art.

[0005] Vehicles generate vibrations during use. As the vehicle moves, external forces are applied to it from surfaces such as the contact surfaces it travels on. Additionally, when the vehicle's motors operate, the forces they generate are transmitted to the vehicle's structure, such as the chassis. These forces can affect vehicle operation or cause noise, vibration, and harshness (NVH), which may be undesirable for the driver. Therefore, vehicles can include various systems (e.g., suspension systems and mounting components that connect the motors to the vehicle structure) designed to mitigate the forces applied to the vehicle. Summary of the Invention

[0006] This section provides a general overview of the disclosures and is not a complete disclosure of their full scope or all characteristics.

[0007] According to a first aspect of this application, a mounting assembly is provided, configured to connect an electric motor to a vehicle frame. The mounting assembly may include an inner tube defining an axis; a damping element connected to the inner tube; and a housing accommodating the inner tube and the damping element, wherein the damping element is formed of a microporous polyurethane material; the damping element includes a plurality of protrusions extending axially and radially outward from the inner tube and a plurality of ridges extending axially and radially outward from the inner tube, wherein adjacent protrusions are spaced apart by one of the plurality of ridges; the housing is configured to compress at least one of the plurality of protrusions and ridges.

[0008] According to the first aspect, the outer casing includes a first casing and a second casing that cooperate with each other.

[0009] According to the first aspect, the plurality of protrusions and the plurality of ridges include a first ridge located between a first protrusion and a second protrusion, a second ridge located between a third protrusion and a fourth protrusion, a third ridge located between a first protrusion and a fourth protrusion, and a fourth ridge located between a second axial protrusion and a third protrusion, wherein each of the first, second, third and fourth protrusions is compressed by the housing, and each of the first, second, third and fourth ridges is spaced apart from the inner surface of the housing.

[0010] According to the first aspect, both the first and second housings include a plurality of radially inwardly extending flanges that define a flat surface configured to abut against one of the raised surfaces and restrict axial movement of the damping element relative to the housing.

[0011] According to the first aspect, each protrusion includes a pair of slits that define a boss between the slits, and each flange abuts against its respective slit.

[0012] According to the first aspect, at least one of the first shell and the second shell includes a radially inwardly extending full ridge, and both the first shell and the second shell include a radially inwardly extending first half ridge and a radially inwardly extending second half ridge; when the first shell and the second shell are joined, the first half ridges abut against each other, and the second half ridges abut against each other to form a pair of radially inwardly extending full ridges.

[0013] According to the first aspect, both the first shell and the second shell include radially inwardly extending ridges; the ridge of the first shell extends axially outward from the edge of the first shell, and the ridge of the second shell extends axially outward from the edge of the second shell.

[0014] According to the first aspect, the first half-ridge and the second half-ridge extend axially from the outer edges of the first shell and the second shell, respectively.

[0015] According to the first aspect, both the first shell and the second shell include radially inwardly extending ridges, wherein the ridge of the first shell extends inwardly from the inner surface of the first shell by a distance less than the ridge of the second shell extends inwardly from the inner surface of the second shell.

[0016] According to the first aspect, when the first shell and the second shell are joined, the entire ridge of the first shell is configured to abut against the third ridge without compressing the third ridge, and the entire ridge of the second shell is configured to abut against the fourth ridge and compress the fourth ridge.

[0017] According to a second aspect of this application, a mounting assembly is provided configured to connect an electric motor to a vehicle frame. The mounting assembly may include an inner tube defining an axis; a damping element connected to the inner tube and extending along the axis; and a housing housing the inner tube and the damping element, wherein the damping element is formed of a microporous polyurethane material; the inner tube includes a first tapered surface, a second tapered surface, a third tapered surface, and a fourth tapered surface; the damping element includes a first protrusion extending along the axial direction and radially outward from the first tapered surface toward the housing, a second protrusion extending along the axial direction and radially outward from the second tapered surface toward the housing, a third protrusion extending along the axial direction and radially outward from the third tapered surface toward the housing, and a fourth protrusion extending along the axial direction and radially outward from the fourth tapered surface toward the housing; the housing presses each of the first, second, third, and fourth protrusions back in a direction toward its respective tapered surface.

[0018] According to the second aspect, the outer casing includes a first casing and a second casing that cooperate with each other.

[0019] According to the second aspect, the damping element includes a first bulge extending radially outward toward the housing between the first and second bulges, a second bulge extending radially outward toward the housing between the third and fourth bulges, a third bulge extending radially outward toward the housing between the first and fourth bulges, and a fourth bulge extending radially outward toward the housing between the second and third bulges, each of the first, second, third, and fourth bulges being spaced apart from the inner surface of the housing.

[0020] According to the second aspect, each of the first, second, third, and fourth bulges is configured to contact the inner surface of the housing when a vibration with a variable amplitude is applied to the mounting assembly.

[0021] According to the second aspect, the inner tube includes a first axially extending protrusion located between a first conical surface and a fourth conical surface, and a second axially extending protrusion located between a second conical surface and a third conical surface.

[0022] According to the second aspect, the inner tube includes a hole extending along the axis for receiving fasteners that connect the motor to the frame.

[0023] According to the second aspect, the axial length of the inner tube is greater than the axial length of the damping element.

[0024] According to the second aspect, the housing includes a corrugated inner surface that defines a plurality of flat surfaces configured as support surfaces for contacting and pressing the first, second, third and fourth axially extending protrusions.

[0025] According to the second aspect, the wavy inner surface defines a plurality of grooves spaced apart from the damping element.

[0026] According to the second aspect, the damping element includes an annular plate for reducing the axial force applied to the mounting assembly.

[0027] From the description of this application, further applicability will become apparent. The descriptions and specific examples in this invention are for illustrative purposes only and are not intended to limit the scope of this application. Attached Figure Description

[0028] The accompanying drawings described in this application are for illustrative purposes only, and not for all possible embodiments, and are not intended to limit the scope of this application.

[0029] Figure 1 This is a perspective view of the mounting assembly according to the first embodiment of this application;

[0030] Figures 2 to 4 yes Figure 1 Various 3D views of the inner tubes of the mounting components are shown.

[0031] Figure 5 and Figure 6 yes Figure 1 Various perspective views of the damping elements in the mounting assembly shown;

[0032] Figure 7 and Figure 8 They are Figure 1 Front views of the assembled components in both unassembled and assembled states;

[0033] Figure 9 yes Figure 1 The side perspective view of the mounting assembly shown connects part of the motor or engine to the chassis.

[0034] Figure 10 yes Figure 9 A cross-sectional view of the installed components shown;

[0035] Figure 11 This is a perspective view of the mounting components according to the second embodiment of this application;

[0036] Figure 12 yes Figure 11 Axial cross-sectional view of the mounting assembly shown;

[0037] Figure 13 yes Figure 11 A radial cross-sectional view of the mounting components shown;

[0038] Figure 14 This is a 3D diagram of a tube. A tube is... Figure 11 Part of the installation components shown;

[0039] Figure 15 yes Figure 14 Axial cross-sectional view of the pipe shown;

[0040] Figure 16 yes Figure 14 The front view of the tube shown;

[0041] Figure 17 This is a 3D diagram of a damping element; this component is... Figure 11 Part of the installation components shown;

[0042] Figure 18 yes Figure 17 A cross-sectional perspective view of the damping element shown;

[0043] Figure 19 yes Figure 17 Axial cross-sectional view of the damping element shown;

[0044] Figure 20It is a cross-sectional view of the damping element and tube assembly;

[0045] Figure 21 Is as Figure 11 A perspective view of the housing of a portion of the mounting components shown;

[0046] Figure 22 This is a perspective view of the mounting assembly according to the third embodiment of this application;

[0047] Figure 23 yes Figure 22 An exploded view of the installed components shown;

[0048] Figure 24 This is a perspective view of the mounting assembly according to the fourth embodiment of this application;

[0049] Figure 25 yes Figure 24 An exploded view of the installed components shown;

[0050] Figure 26 This is a perspective view of the mounting assembly according to the fifth embodiment of this application;

[0051] Figure 27 yes Figure 26 An exploded view of the installed components shown;

[0052] Figure 28 This is a perspective view of the mounting assembly according to the sixth embodiment of this application;

[0053] Figure 29 yes Figure 28 An exploded view of the installed components shown;

[0054] Figure 30 This is a perspective view of the mounting assembly according to the seventh embodiment of this application; and

[0055] Figure 31 This is a perspective view of the mounting assembly according to the eighth embodiment of this application.

[0056] The corresponding reference numbers represent the corresponding parts of each view in the figure. Detailed Implementation

[0057] An exemplary embodiment will now be described in more detail with reference to the accompanying drawings.

[0058] The exemplary embodiments are provided to make the present application more detailed and to fully communicate its scope to those skilled in the art. Numerous specific details, such as examples of specific components, devices, and methods, are set forth herein to provide a comprehensive understanding of the embodiments of the present application. It will be apparent to those skilled in the art that the exemplary embodiments can be embodied in many different forms without requiring specific details, and neither of these forms should be construed as limiting the scope of the present application. In some exemplary embodiments, well-known processes, well-known device structures, and well-known techniques are not described in detail.

[0059] The terminology used in this application is for describing specific exemplary embodiments only and is not restrictive. The terms "comprising," "including," "comprises," and "having" are inclusive and thus specify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described in this application should not be construed as having to be performed in the specific order discussed or described, unless specifically specified otherwise. It should also be understood that other steps or alternative steps may be employed.

[0060] When an element or layer is referred to as "on," "engaged to," "connected to," or "coupled to" another element or layer, it may be directly on, engaged to, connected to, or coupled to the other element or layer, or there may be intermediate elements or layers present. Conversely, when an element is referred to as "directly on," "directly engaged to," "directly connected to," or "directly coupled to" another element or layer, there may be no intermediate elements or layers present. Other terms used to describe the relationship between elements should also be interpreted in a similar manner (e.g., "between" vs. "directly between," "adjacent" vs. "directly adjacent," etc.). The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0061] Although the terms first, second, third, etc., may be used in this application to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms may only be used to distinguish one element, component, region, layer, or portion from another region, layer, or portion. Unless the context clearly indicates otherwise, the terms "first," "second," and other numerical terms used herein do not imply order or sequence. Therefore, the first element, component, region, layer, or portion discussed below may be referred to as a second element, component, region, layer, or portion without departing from the teachings of the exemplary embodiments.

[0062] For ease of description, spatial relative terms such as "inside," "outside," "below," "below," "lower," "above," and "upper" are used here to describe the relationship between one element or feature and another element or feature shown in the figure. In addition to the orientations described in the figure, spatial relative terms may also include different orientations of the device during use or operation. For example, if the device in the figure is flipped over, other elements or features described as "below" or "under" would be placed "above" other elements or features. Therefore, the example term "below" can include both "above" and "below." The device may be oriented in other ways (rotated 90 degrees or other orientations), and the spatial relative descriptors used here will be interpreted accordingly.

[0063] Figures 1 to 10 A mounting assembly 10 according to a first embodiment of this application is shown. The mounting assembly 10 includes an inner tube 12, a damping element 14 coupled to or bonded to the inner tube 12, and a housing 16. The mounting assembly 10 is used to reduce vibrations generated in a vehicle and can be mounted on a vehicle (not shown) motor or engine (…). Figure 9 (A portion of which is shown by reference numeral 11 in the attached figure) is between the vehicle frame or subframe 13. In particular, the vehicle may be an electric vehicle, and the engine may be an electric motor.

[0064] Mounting assembly 10 is configured to suppress radially applied vibrations. In this respect, while mounting assembly 10 can at least partially suppress axially applied vibrations, it is not designed to extend along the Z-axis between the motor and the frame. Instead, mounting assembly 10 is designed to extend along the x-axis or y-axis between the motor and the frame (e.g., see...). Figure 9 It should be understood that the "z-axis direction" is a direction that extends substantially perpendicular to the ground, while the "x-axis and y-axis directions" are directions that extend substantially parallel to the ground. For example, the mounting assembly 10 may extend between the motor 11 and the frame 13 in the longitudinal direction of the vehicle (i.e., the y-axis direction), or between the motor 11 and the frame 13 in the lateral direction of the vehicle (i.e., the x-axis direction), rather than in the vertical direction (z-axis direction).

[0065] The inner tube 12 is a rigid component and can be formed from rigid materials such as aluminum or other types of metals. For example... Figures 2 to 4 As shown, the inner tube 12 has a tube body 18, which includes an axially extending hole 20 that extends along the longitudinal axis A and the entire length L1 of the inner tube 12. The hole 20 is used to install a fastener 15. Figure 9 The fastener 15 includes a head 17, a handle 19 and a nut 21 for securing the mounting assembly 10 between the motor 11 and the frame 13.

[0066] The tube body 18 includes a first conical surface 22, a second conical surface 24, a third conical surface 26, and a fourth conical surface 28, all of which extend along the entire length L1 of the inner tube 12. A first connecting surface 30 connects the first conical surface 22 and the second conical surface 24, wherein the first conical surface 22 and the second conical surface 24 are conical in the direction toward each other. A second connecting surface 32 connects the third conical surface 26 and the fourth conical surface 28, wherein the third conical surface 26 and the fourth conical surface 28 are conical in the direction toward each other.

[0067] A first axially extending protrusion 34 extends along the length L1 of the inner tube and is located between the first tapered surface 22 and the fourth tapered surface 28. A second axially extending protrusion 36 extends along the length L1 of the inner tube 12 and is located between the second tapered surface 24 and the third tapered surface 26. The first protrusion 34 includes a first flat surface 38 connected to the first tapered surface 22 via a first side surface 40 and to the fourth tapered surface 28 via a second side surface 42. The second protrusion 36 includes a second flat surface 44 connected to the second tapered surface 24 via a third side surface 46 and to the third tapered surface 26 via a fourth side surface 48. The tapered surfaces 22, 24, 26, and 28 give the body 18 a major axis X1 and a minor axis X2, wherein each major axis X1 and minor axis X2 extends orthogonally to the longitudinal axis A. The tapered surfaces 22, 24, 26, and 28 are configured to receive forces transmitted to the inner tube 12 via a damping element 14, which will be described in detail later.

[0068] Now for reference Figure 1 , Figure 5 and Figure 6 As can be seen, the damping element 14 includes an axially extending through-hole 50 configured to accommodate the inner tube 12. The shape of the through-hole 50 corresponds to the outer surface of the inner tube 12, allowing the inner tube 12 to be tightly inserted. Therefore, the through-hole 50 includes an inner surface 52 designed to mate with the tapered surfaces 22-28 and the protrusions 34 and 36. The damping element 14 can be made of a polymeric material. In particular, the damping element 14 is formed of a microporous polyurethane (MCU) material, which has stronger damping properties compared to more rigid materials such as rubber or other types of elastic materials.

[0069] As described above, the damping element 14 can be bonded or adhered to the inner tube 12. For this purpose, the inner tube 12 can be placed in a mold (not shown), and then the MCU material can be injected into the mold and bonded to the inner tube 12. Alternatively, the damping element 14 can first be formed into the desired shape with the through-hole 50, then an adhesive (not shown) can be applied to the through-hole 50 or the outer surface of the inner tube 12, and the inner tube 12 can be inserted into the through-hole 50, whereby the adhesive will adhere the damping element 14 to the inner tube 12.

[0070] Damping element 14 includes a main body 54 ( Figure 6 The body 54 has a plurality of axially extending protrusions 56 extending along the entire length L2 of the damping element 14. A first protrusion 56a extends outward from the body 54 corresponding to a first conical surface 22 of the inner tube 12. A second protrusion 56b extends outward from the body 54 corresponding to a second conical surface 24. A third protrusion 56c extends outward from the body 54 corresponding to a third conical surface 26. A fourth protrusion 56d extends outward from the body 54 corresponding to a fourth conical surface 28. These protrusions 56, extending between the housing 16 and the inner tube 12, are a key feature of the damping element 14, used to dampen vibrations applied to the mounting assembly 10, as will be described in detail later.

[0071] A first axially extending ridge 58 extends outward from the body 54 between the first and second protrusions 56a and 56b, corresponding to the position of the first connecting surface 30 of the inner tube 12. A second axially extending ridge 60 extends outward from the body 54, located between the third and fourth protrusions 56c and 56d, corresponding to the position of the second connecting surface 32 of the inner tube 12. A third axially extending ridge 62 extends outward from the body 54, located between the first and fourth protrusions 56a and 56d, corresponding to the position of the first protrusion 34. A fourth axially extending ridge 64 extends outward from the body 54, located between the second and third protrusions 56b and 56c, corresponding to the position of the second protrusion 36. Figure 1 As shown, the first to fourth protrusions 58, 60, 62 and 64 extend along the direction of the outer shell 16, but are separated from the outer shell 16 by a certain distance.

[0072] As described above, the axially extending protrusions 56 extend outward from the body 54 at positions corresponding to the conical surfaces 22, 24, 26, and 28. Therefore, the axially extending protrusions 56 extend outward from the body 54 at an angle. For example, with the major axis X1 as a reference, the fourth protrusion 56d forms an angle of approximately 60 degrees with axis X1, the first protrusion 56a forms an angle of approximately 120 degrees with axis X1, the second protrusion 56b forms an angle of approximately 240 degrees with axis X1, and the third protrusion 56c forms an angle of approximately 300 degrees with axis X1. These orientations are variable. For example, the fourth protrusion 56d may be located at an angle of approximately 30 or 45 degrees, and the other protrusions 56a, 56b, and 56c may be located in similar orientations.

[0073] Please refer to the following: Figure 7-10 The housing 16 is described below. The housing 16 may be formed of a rigid polymeric material or a metallic material. For example, polymeric materials include rigid thermoplastic or thermosetting materials, such as polyamides (e.g.,...). (or polystyrene.) Metallic materials include aluminum, steel, titanium, etc.

[0074] The outer shell 16 is a hollow cylindrical component, which may be composed of a first shell 16a and a second shell 16b, which cooperate to form a hollow cylindrical component. To connect the first shell 16a and the second shell 16b, the second shell 16b may include a plurality of (four in the illustrated embodiment) flaps 66, which are configured to correspond to corresponding holes 68 formed on the first shell 16a. Figure 9 When the combination of the inner tube 12 and the damping element 14 is located, for example, in the second shell 16b, the first shell 16a can engage with the second shell 16b by inserting the wing 66 into the hole 68. When the first shell 16a engages with the second shell 16b, the axially extending protrusion 56 is in a compressed state. Figure 8 and Figure 10 This best illustrates the point, among which Figure 8 The protrusion 56 is shown in a compressed state. Figure 10 This shows that if the protrusion 56 does not contact the housing 16, it will extend to 70.

[0075] like Figure 7 , Figure 8 and Figure 10 As shown, the inner surface 72a of the first shell 16a and the inner surface 72b of the second shell 16b are both wavy. The inner surfaces 72a and 72b are mirror images of each other; therefore, the description of the inner surfaces 72a and 72b refers only to the inner surface 72a of the first shell 16a. Starting from the first edge 74a of the first shell 16a, the inner surface 72a includes a first portion 76 that transitions to a flat second portion 78, which is flat and angled relative to the first portion 76. The second portion 78 then transitions to a third portion 80, which is flat and angled relative to the second portion 78, serving as a support surface for the first protrusion 56a. The third portion 78 then transitions to a groove 82 located corresponding to the third protrusion 62. The depth of the groove 82 separates the third protrusion 62 from the inner surface 72a of the first shell 16a by a certain distance. However, it should be understood that when the mounting assembly 10 is subjected to a large force of vibration, the third protrusion 62 may come into contact with the inner surface 72a. The groove 82 then transitions to a fourth portion 84, which is similar to the third portion 80. That is, the fourth portion 84 serves as a support surface for the fourth protrusion 56d. The fourth portion 84 then transitions to a fifth portion 86, which is flat and angled relative to the fourth portion 84, similar to the second portion 78. Finally, the fifth portion 86 transitions to a sixth portion 88, which is similar to the first segment 76 and terminates at the second edge 74b of the first shell 16a.

[0076] The first and sixth portions 76 and 88 are located on the first housing 16a at positions corresponding to and spaced apart from the first and second protrusions 58 and 60. However, it should be understood that, similar to the third and fourth protrusions 62 and 64, the first and second protrusions 58 and 60 may come into contact with the inner surface 72a when the mounting assembly 10 is subjected to a large force of vibration.

[0077] During the use of the mounting assembly 10, vibrations generated by the motor or received by the vehicle during operation are transmitted to fasteners (not shown) passing through the inner tube 12. The force of these vibrations is then transmitted from the fasteners to the inner tube 12, and from the inner tube 12 to the damping element 14. Specifically, the interfaces between the tapered surfaces 22, 24, 26, and 28 and the axially extending protrusions 56a, 56b, 56c, and 56d transmit the vibration-generated force radially outward through protrusions 56a-56d to the outer casing 16.

[0078] Furthermore, since the damping element 14 is formed of a material such as microporous polyurethane (MCU), it provides high damping at lower frequencies and low damping at higher frequencies. This is due to the compression of the protrusions 56a-56d formed of the MCU material within the housing 16. In other words, because the damping element 14 is entirely formed of MCU material, its rigidity is not as good as dampers formed of rubber or other types of elastic materials. Due to the inherent characteristics of the MCU material, it provides better vibration attenuation at low frequencies and reduces vibration propagation at high frequencies.

[0079] Furthermore, when the mounting assembly 10 is subjected to greater vibrations (i.e., vibrations with larger amplitudes or higher frequencies), the protrusions 56a-56d will be compressed to the extent that the bulges 58, 60, 62, and 64 may contact the housing 16. It should be understood that since the damping element 14 is formed of MCU material, the bulges 58-64 are also compressible, thereby allowing for greater attenuation of vibrations applied to the mounting assembly 10. Therefore, the mounting assembly 10 of this application is able to more effectively dampen vibrations compared to mounting assemblies that use a different material for the damping element 14 and do not have the geometry of the damping element 14.

[0080] Now please see Figures 11 to 21 The figure shows a mounting assembly 100 according to a second embodiment of this application. The mounting assembly 100 includes an inner tube 102 (e.g., Figure 14-16 As shown), damping element 104 (as shown) Figure 17-20 (as shown) and housing 106 (as shown) Figure 11-13 and Figure 21(As shown). Mounting assembly 100 is used to suppress vibrations generated by a vehicle and can be installed between the motor or engine (not shown) of the vehicle (not shown) and the frame (not shown) or subframe (not shown). In particular, the vehicle can be an electric vehicle, and the motor or engine can be an electric motor.

[0081] Mounting assembly 100 can be used to suppress radial vibrations acting on it. Furthermore, as will be detailed later, mounting assembly 100 can suppress axial vibrations to a greater extent than mounting assembly 10 described above. Similar to mounting assembly 10, mounting assembly 100 is not designed to extend along the z-axis between the motor and the frame. Instead, mounting assembly 100 can extend along either the x-axis or y-axis between the motor and the frame.

[0082] The inner tube 102 includes a hollow cylindrical tube 103, which can be formed of a rigid material (such as aluminum or other types of metals). Figures 14 to 16 As shown, the inner tube 102 also includes a two-piece polymer tube body 108, which includes an axially extending bore 120 extending along the longitudinal axis A and the entire length of the tube body 108, and is configured to receive a tube 103 therein. The tube 103 is used to receive a fastener (not shown) that secures the mounting assembly 100 between the motor and the frame.

[0083] The tube body 108 defines a first conical surface 122, a second conical surface 124, a third conical surface 126, and a fourth conical surface 128. A first wedge block 130 connects the first conical surface 122 and the second conical surface 124, wherein the first conical surface 122 and the second conical surface 124 are conical in the direction facing each other. A second wedge block 132 connects the second conical surface 124 and the third conical surface 126, wherein the second and third conical surfaces 124 and 126 are conical in the direction facing each other. A third wedge block 134 connects the third conical surface 126 and the fourth conical surface 128, wherein the third conical surface 126 and the fourth conical surface 128 are conical in the direction facing each other. A fourth wedge block 136 connects the fourth conical surface 128 and the first conical surface 122, wherein the first conical surface 122 and the fourth conical surface 128 are conical in the direction facing each other. Furthermore, the tube body 108 defines an axially extending protrusion 109 that mates with a corresponding groove 111 formed on the damping element 104 to correctly position the damping element 104 relative to the inner tube 102. Tapered surfaces 122, 124, 126, and 128 are used to receive the forces transmitted from the damping element 104 to the inner tube 102, which will be described in detail later.

[0084] Now for reference Figures 17 to 20As can be seen, the damping element 104 includes a first damping element 104a and a second damping element 104b, which together define an axially extending through-hole 150 configured to receive the inner tube 12 therein. The shape of the through-hole 150 corresponds to the outer surface of the inner tube 102, thereby allowing the inner tube 102 to be securely fixed therein. The damping element 104 may be made of a polymeric material. In particular, the damping element 104 is made of a microporous polyurethane (MCU) material, which has damping characteristics with a specific amplitude.

[0085] Each damping element 104a and 104b is a monolithic body formed by an MCU, including an annular plate 155 for damping axial forces (vibrations) applied to the mounting assembly 100, and a plurality of radially outwardly extending protrusions 156. In the illustrated embodiment, the plurality of protrusions 156 include a first protrusion 156a for contacting a first tapered surface 122 of the inner tube 102; a second protrusion 156b for contacting a second tapered surface 124; a third protrusion 156c for contacting a third tapered surface 126; and a fourth protrusion 156d for contacting a fourth tapered surface 128. Protrusions 156a-156d extend between the housing 106 and the inner tube 102 and are a key feature of damping element 104 for damping radial vibrations applied to the mounting assembly 100, as will be described in detail later.

[0086] As described above, the radially outward-extending protrusions 156a-156d extend outward at positions corresponding to the conical surfaces 122, 124, 126, and 128. Therefore, the protrusions 156a-156d extend radially outward at an inclined angle. For example, with... Figure 20 Based on axis B shown, the fourth protrusion 156d is at approximately a 45-degree angle to axis B, the first protrusion 156a is at approximately a 135-degree angle to axis B, the second protrusion 156c is at approximately a 225-degree angle to axis B, and the third protrusion 156c is at approximately a 315-degree angle to axis B. These orientations can be varied.

[0087] Now for reference Figure 11-13 and Figure 21 The housing 106 will be described below. The housing 106 can be formed of a rigid polymeric material or a metallic material. Polymeric materials include rigid thermoplastic or thermosetting materials, such as polyamides (e.g.,...). (or polystyrene.) Metallic materials include aluminum, steel, titanium, etc.

[0088] The outer shell 106 is a hollow cylindrical component, which may be composed of a first shell 106a and a second shell 106b, which cooperate to form a hollow cylindrical component. To connect the first shell 106a and the second shell 106b, each shell 106a and 106b may include a flap 166 configured to engage with a corresponding groove 168 formed on the opposing shell 106a or 106b. When the combination of the inner tube 102 and the damping element 104 is located, for example, in the second shell 106b, the first shell 106a and the second shell 106b can be engaged by inserting the flap 166 into the groove 168. When the first shell 106a and the second shell 106b are engaged, the axially extending protrusions 156a-156d will be compressed. Figure 13 This best illustrates the point.

[0089] The inner surface 172a of the first shell 106a and the inner surface 172b of the second shell 106b are both wavy, as shown in the figure. Figure 13 and Figure 21 As shown. Inner surfaces 172a and 172b are mirror images of each other; therefore, the description of inner surfaces 172a and 172b refers only to inner surface 172a of the first shell 16a. Starting from the first edge 174a of the first shell 106a, inner surface 172a includes a cylindrical first portion 176. The first portion 176 transitions to a second portion 178, which is flat and angled relative to the first portion 176, serving as a support surface for the first protrusion 156a. The second portion 178 then transitions to a third portion 180, which is flat and angled relative to the second portion 178. The third portion 180 then transitions to a fourth portion 184, which is similar to the second portion 178. That is, the fourth portion 184 is the support surface for the fourth protrusion 156d. The fourth portion 184 then transitions to a fifth portion 186, which is similar to the first portion 176 (i.e., cylindrical) and terminates at the second edge 174b. Each housing 106a and 106b also includes a pair of annular support surfaces 185 configured to abut against annular plate 155. Support surfaces 185 include cutouts 187 shaped to allow protrusions 156a-156d to pass through during assembly of mounting assembly 100.

[0090] During use of the mounting assembly 100, vibrations generated by the motor or received by the vehicle during operation are transmitted to fasteners (not shown) passing through the inner tube 102. The force of these vibrations is then transmitted from the fasteners to the inner tube 102, and from the inner tube 102 to the damping element 104. Specifically, the interface between the tapered surfaces 122, 124, 126, and 128, and the radially extending protrusions 156a, 156b, 156c, and 156d, respectively transmit the force generated by the vibrations radially outward through the protrusions 156a-156d to the housing 106. Furthermore, the annular plate 155 also reduces any axial forces applied to the mounting assembly 100.

[0091] Furthermore, since the damping element 104 is formed of a material such as microporous polyurethane (MCU), it provides high damping at lower frequencies and low damping at higher frequencies. This is due to the compression of the protrusions 156a-156d formed of the MCU material within the housing 106. In other words, because the damping element 104 is entirely formed of MCU material, its rigidity is not as good as dampers formed of rubber or other types of elastic materials. Due to the inherent characteristics of the MCU material, it provides better vibration attenuation at low frequencies and reduces vibration propagation at high frequencies.

[0092] Now for reference Figure 22-31 The figure shows some related Figure 1-10 Similar improved embodiments are shown. Each improved embodiment includes the function of adjusting the level of vibration damping applied to the mounting assembly by the mounting assembly. More specifically, as will be described in detail below, each of the inner tube, damping element, and housing can be modified to adjust the manner in which the mounting assembly damps vibrations applied to the mounting assembly. In this way, mounting assemblies can be selected for specific types of vehicles (e.g., sedans vs. SUVs), thereby making the damping characteristics of the mounting assembly more directly adapted to the specific type of vehicle. In this regard, for vehicles more suited to use in harsh driving conditions (such as off-road vehicles), the mounting assembly preferably provides stronger damping performance compared to vehicles not suited to harsh driving conditions (such as those only driven on paved streets).

[0093] Figure 22 and 23 A mounting assembly 200 according to a third embodiment of this application is shown. Mounting assembly 200 includes the same inner tube 12 as mounting assembly 10, therefore, descriptions related to this embodiment will be omitted. The main difference between mounting assembly 200 and mounting assembly 10 is that mounting assembly 200 includes an improved damping element 202 and an improved housing 204. The damping element 202 is modified to accommodate the improved housing 204.

[0094] The outer shell 204 is a hollow cylindrical component, which can be composed of a first shell 204a and a second shell 204b, which cooperate to form the hollow cylindrical component. Although in Figure 22 and 23 Not shown, but it should be understood that in order to connect the first shell 204a to the second shell 204b, the second shell 204b may include multiple flaps, which are arranged in a manner similar to... Figure 7 and 9 The manner shown mates with a corresponding hole formed on the first shell 204a (see, for example, see...). Figure 7 and 9 (The wing 66 and the hole 68 in the middle). When the combination of the inner tube 12 and the damping element 202 is located, for example, in the second shell 204b, the first shell 204a can be mated with the second shell 204b by inserting the wing into the hole.

[0095] Both the first housing 204a and the second housing 204b include a smooth inner surface 206 and a plurality of (four in the illustrated embodiment) radially inwardly extending flanges 208. Each flange 208 includes a flat surface 210 configured to abut against the surface 212 of a protrusion 56 of the damping element 202. The flat surface 210 is inclined at an angle corresponding to the surface 212 of the respective protrusion 56, such that when the damping element 202 is located within the housing 204 and the inclined surface 210 abuts against the surface 212, the flat surface 210 and the surface 212 of the protrusion 56 are substantially coplanar. The flanges 208 also include a first inclined surface 214 configured to abut against second inclined surfaces 216 of the protrusions 58, 60, 62, and 64 of the damping element 202.

[0096] Similar to mounting assembly 10, vibrations transmitted from the frame to a fastener (not shown) located in hole 20 are transmitted to inner tube 12, which then transmits the vibrations to damping element 202. Vibrations transmitted to damping element 202 travel radially outward from inner tube 12 through protrusion 56 and are then transmitted to flat surface 210 and a first inclined surface 214 of flange 208, which is in contact with surface 212 of protrusion 56 and a second inclined surface 216 of ridges 58-64.

[0097] Damping element 202 is basically similar to damping element 14 and can be constructed using an MCU. However, from... Figure 22 and Figure 23 As can be seen, each of the protrusions 56 includes a pair of cutouts 218, which define a boss 220 therebetween. The cutouts 218 define a surface 212 that abuts against the flat surface 210. Furthermore, since the flat surface 210 of the flange 208 abuts against the surface 212, and there is a boss 202 therebetween, it should be understood that the flange 208 is configured to restrict the axial movement of the damping element 202 within the housing 204 during use of the mounting assembly 200.

[0098] During use of mounting assembly 200, the boss 202 and the protrusions 58-64 can maintain a certain distance from the inner surface 206 of the housing 204. Nevertheless, it should be understood that during periods of strong vibration, the boss 202 and the protrusions 58-64 may come into contact with the inner surface 206. Nevertheless, due to the distance between the boss 202 and the inner surface 206, the degree to which mounting assembly 200 reduces vibration differs from that of mounting assembly 10 alone (it is less rigid).

[0099] Now for reference Figure 24 and Figure 25 The figure shows a mounting assembly 300 according to a fourth embodiment of this application, which is similar to mounting assembly 10. In this respect, mounting assembly 300 includes an inner tube 302, a damping element 304, and a housing 306 (including a first housing 306a and a second housing 306b). The main difference between mounting assembly 300 and mounting assembly 10 is that mounting assembly 300 includes an improved inner tube 302 and an improved housing 306. The damping element 304 is substantially similar to damping element 14, but includes an improved through-hole 50 to accommodate the improved inner tube 302.

[0100] The inner tube 302 includes a body 308 defining an axially extending bore 310 for receiving fasteners (not shown) that couple the mounting assembly 300 to a vehicle frame or subframe (not shown). The bore 310 may include radially outwardly extending slots 312 for receiving radially outwardly extending ribs (not shown), which may be part of the fasteners (not shown). The body 308 includes a pair of arcuate outer surfaces 314 connected by a pair of planes 316. The geometry provided by the arcuate outer surfaces 314 and the planes 316 for the inner tube 302 helps reduce the vibration velocity of the mounting assembly 300.

[0101] As described above, damping element 304 is similar to damping element 14, but the shape of the through-hole 50 is different; the current shape is to accommodate the geometry of the inner tube 302. However, as can be seen from the illustrated embodiment, damping element 304 includes multiple outwardly extending protrusions 56 and ridges 58-64, just like damping element 14. Damping element 304 can also be constructed using an MCU.

[0102] The outer shell 306 is a hollow cylindrical component, which can be composed of a first shell 304a and a second shell 304b, which cooperate to form the hollow cylindrical component. Although in Figure 24 and 25 Not shown, but it should be understood that in order to connect the first housing 304a to the second housing 304b, the second housing 304b may include multiple flaps, which are arranged in a manner similar to... Figure 7 and9 The manner shown mates with a corresponding hole formed on the first housing 304a (see, for example, see...). Figure 7 and 9 (The wing 66 and the hole 68 in the middle). When the combination of the inner tube 302 and the damping element 304 is located, for example, in the second shell 304b, the first shell 304a can be mated with the second shell 304b by inserting the wing into the hole.

[0103] Both the first shell 304a and the second shell 304b may include a plurality of axially extending ridges 318 that extend radially inward from the inner surface 320. Specifically, the first shell 304a and the second shell 304b include an axially extending full ridge 318 configured to abut and press against one of the protrusions (e.g., 62 and 64 in the illustrated embodiment), and also include a pair of axially extending half ridges 322a and 322b. When the first shell 306a mates with the second shell 306b, the half ridge 322a of the first shell 306a abuts against the half ridge 322a of the second shell 306b, together forming an axially extending full ridge 318 that abuts and presses against the protrusion 58. Similarly, when the first shell 306a mates with the second shell 306b, the half ridge 322b of the first shell 306a will connect with the half ridge 322b of the second shell 306b to form an axially extended full ridge 318, which will connect with and press against the ridge 60.

[0104] Ridge 318 includes a support surface 324 spaced apart from the inner surface 320 and a pair of side surfaces 326 connecting the support surface 324 and the inner surface 320. Ridge 318 is trapezoidal, and the width of the support surface 324 is substantially equal to the width of the ridges 58-64. Although the support surface 324 formed by the half ridges 322a and 322b is substantially similar to the full ridge 318 (which abuts against ridges 62 and 64), it should be understood that the full ridge 318 abutting against ridges 62 and 64 extends axially outward from the edge 328 of the housing 306, while the ridge formed by the half ridges 322a and 322b does not extend axially outward from the edge 328.

[0105] When the first shell 306a mates with the second shell 306b, the protrusion 56 abuts against and is pressed against the inner surface 320. Because both the protrusion 56 and the ridges 58-64 are pressed against the features of the outer shell 306, the mounting assembly 300 provides a higher vibration damping rating compared to mounting assemblies 10 and 200. Furthermore, because the inner tube 302 includes an arcuate surface 314 and a flat surface 316, it... Figure 1-10 , Figure 22 and Figure 23 Compared to the embodiment shown, the vibration transmitted to the inner tube 302 is more evenly distributed across the protrusions 56 and ridges 58-64.

[0106] Please refer to the following: Figure 26 and27 The figure shows a mounting assembly 400 according to a fifth embodiment of this application, which is similar to mounting assembly 300. In this respect, mounting assembly 400 includes an inner tube 402, a damping element 404, and a housing 406 (including a first housing 406a and a second housing 406b). Because the inner tube 402 and the housing 406 are... Figure 24 and Figure 25 The ones shown are basically the same, so a description of them will be omitted, but it should be noted that... Figure 24 and Figure 25 The features shown include reference numbers starting with "4", instead of... Figure 24 and Figure 25 The reference number that begins with "3".

[0107] The main difference between mounting assembly 400 and mounting assembly 300 is that mounting assembly 400 includes an improved damping element 404, which can be constructed from an MCU and is substantially similar to damping element 304, but includes improved protrusions 62 and 64. In this respect, compared with Figure 24 and Figure 25 Compared to the raised sections 62 and 64 shown, the improved raised sections 62 and 64 extend radially outward from the inner tube 402 by a greater extent. Figure 25 Compared to the distance D1 shown, by increasing the distance D2 that the bulges 62 and 64 extend radially outward, the bulges 62 and 64 can obtain a greater amount of compression when the damping element 404 is located inside the housing 406, thereby adjusting the damping characteristics of the damping element 404 (i.e., the damping element 404 is even stiffer than the damping element 304).

[0108] Please refer to the following: Figure 28 and Figure 29 The figure shows an installation component 500 according to a sixth embodiment of this application. The installation component 500 includes components that are compatible with... Figure 1 The inner tube 502 shown is the same as the inner tube 12 (although it has the same inner tube 502 as the inner tube 12 shown). Figure 24 The shown groove 312 includes an axially extending groove 504, a damping element 506, and a housing 508 including a first housing 508a and a second housing 508b. The damping element 506 is similar to... Figure 27 and 28 The damping element 404 shown is essentially the same (i.e., it has radially outwardly extending bulges 62 and 64 at a distance D2), and the damping element can be constructed from an MCU. The main difference between mounting assembly 500 and mounting assembly 10 is the housing 508.

[0109] The first and second housings 508a and 508b mate to form a cylindrical component. The first housing 508a includes an inner surface 510a comprising a radially inwardly extending first full ridge 512 and a pair of half ridges 514a and 514b. The second housing 508b also includes an inner surface 510b and a pair of half ridges 514a and 514b. When the first housing 508a mates with the second housing 508b, the pair of half ridges 514a and 514b abut against each other to form an axially extending second full ridge 516. When the first and second housings 508a and 508b are mated together, ridge 512 serves to abut against and compress bulge 62, while ridge 516 serves to abut against and compress bulges 58 and 60 of the damping element 506. In the illustrated embodiment, ridge 516 extends axially outward from the edge 517 of the housing 508, while ridge 512 is absent.

[0110] The second shell 508b does not include the radially inwardly extending first full ridge 512. Instead, the inner surface 510b includes a first cylindrical portion 518a that transitions inwardly from a semi-ridge 514a to a flat portion 520, and then transitions inwardly from a second semi-ridge 514b to a second cylindrical portion 518b. When the first and second shells 508a and 508b are mated together, the flat portion 520 is configured to abut against the ridge 64 but not to compress it. The first full ridge 512 on the first shell 508a compresses the ridge 64, while the flat portion 520 does not compress the ridge 64, which changes the degree to which the mounting assembly 500 reduces vibration. That is, the mounting assembly 500 is less rigid than the mounting assemblies 300 and 400.

[0111] Now for reference Figure 30 The figure shows a mounting assembly 600 according to a seventh embodiment of this application. The mounting assembly 600 includes a cylindrical inner tube 602 having an axially extending hole 604 including an axially extending groove 606. A damping element 608, which can be constructed from an MCU, is bonded to the inner tube 602. This damping element is similar to damping element 14 but includes an axially extending through-hole 610, the shape of which corresponds to the cylindrical inner tube 602. The cylindrical inner tube 602 and the damping element 608 are located within a housing 612, which includes a first housing 612a that mates with a second housing 612b. The housing 612 is similar to... Figure 24 and Figure 25 The outer casing 306 is shown.

[0112] In this respect, the first shell 612a includes an inner surface 614a having an axially extending full ridge 616a and a pair of axially extending semi-ridges 618a and 618b. The semi-ridges 618a and 618b extend axially outward from the edge 620a of the first shell 612a. The second shell 612b includes an inner surface 614b having an axially extending full ridge 616b and a pair of axially extending semi-ridges 618a and 618b. The semi-ridges 618a and 618b extend axially outward from the edge 620b of the first shell 612b. When the first shell 612a mates with the second shell 612b, the semi-ridges 618a and 618b abut against each other, forming a ridge 622 configured to abut and compress bulges 58 and 60. In this respect, the radially outward extension distance D3 of ridges 58 and 60 is greater than that of ridges 62 and 64, so that although ridges 616a and 616b are configured to abut against ridges 62 and 64, they do not compress ridges 62 and 64 when the first shell 612a mates with the second shell 612b. Ridges 616a, 616b, and 622 are generally trapezoidal, including a support surface 624 spaced apart from the inner surfaces 614a and 614b and a pair of side surfaces 626 connecting the support surface 624 to the inner surfaces 614a and 614b. When the first shell 612a mates with the second shell 612b, ridges 62 and 64 are not compressed, and the vibration reduction rate of mounting assembly 600 differs from that of mounting assemblies 10, 200, 300, 400, and 500 compared to the compression of ridges 58 and 60.

[0113] Now for reference Figure 31 The figure shows a mounting assembly 700 according to an eighth embodiment of the present application. The mounting assembly 700 includes components that... Figure 1 The inner tube 702 is similar to the inner tube 12 shown, as is the damping element 704 which can be constructed from an MCU, and the outer shell 706 which includes a first shell 706a and a second shell 706b. Since the inner tube 702 is similar to the inner tube described above, this feature will not be further described.

[0114] The first and second housings 706a and 706b each include inner surfaces 708a and 708b, respectively. Inner surface 708a includes an axially extending ridge 710a, and inner surface 708b includes an axially extending ridge 710b. However, ridges 710a and 710b differ from each other because the bulges 62 and 64 of the damping element 704 are different. In this respect, unlike bulges 62 and 64 which extend radially outward from the inner tube 702 to the same extent, in this embodiment, bulge 62 extends outward from the inner tube 702 to a greater extent (D5) than bulge 64 (D6). Therefore, the distance D7 by which ridge 710a extends outward from inner surface 706a is less than the distance D8 by which ridge 710b extends outward from inner surface 706b.

[0115] When the first and second housings 706a and 706b are mated together, the protrusion 56 may abut against or be spaced apart from the inner surfaces 708a and 708b of the first and second housings 706a and 706b. Similarly, when the first and second housings 706a and 706b are mated together, the ridges 58 and 60 may abut against or be spaced apart from the inner surfaces 708a and 708b of the first and second housings 706a and 706b. Due to the different engagement methods of the ridges 62 and 64 with the ridges 710a and 710b, the damping characteristics of the mounting assembly 700 differ from those of the other embodiments described above.

[0116] While each mounting assembly 10, 200, 300, 400, 500, 600, and 700 has different damping characteristics, it should be understood that various features of one embodiment (i.e., the flange 208 and boss 220 of mounting assembly 200) can also be incorporated into the remaining embodiments. That is, while mounting assemblies 10, 300, 400, 500, 600, and 700 do not include the flange 208, nor the damping element with the boss 220 and the notch 212, it should be understood that mounting assemblies 10, 300, 400, 500, 600, and 700 may include these features, if desired, to limit axial movement of the damping element within its housing. Furthermore, any configuration of the inner tube can be selected for each embodiment, the choice of which can be determined based on the desired damping characteristics.

[0117] The foregoing description of the embodiments is for illustrative purposes only. It is not intended to be exhaustive or limiting of the scope of this application. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but are interchangeable where applicable and can be used in selected embodiments, even if not specifically shown or described. The same content can also be varied in many ways. These variations should not be considered a departure from the scope of this application, and all such modifications should be included within the scope of this application.

Claims

1. A mounting assembly for connecting a motor to the frame of a vehicle, comprising: Inner tube used to define the axis; Damping element that engages with the inner tube; as well as A housing that accommodates the inner tube and the damping element. The damping element is made of microporous polyurethane material and includes: (A) A plurality of protrusions extending radially outward from the inner tube and along the axis, and a plurality of ridges extending radially outward from the inner tube and along the axis, wherein adjacent protrusions are spaced apart from each other by one of the ridges, and the housing is configured to compress at least one of the protrusions or at least one of the ridges; or (B) A first protrusion extending radially outward from the first tapered surface of the inner tube toward the outer shell and along the axis; a second protrusion extending radially outward from the second tapered surface of the inner tube toward the outer shell and along the axis; a third protrusion extending radially outward from the third tapered surface of the inner tube toward the outer shell and along the axis; and a fourth protrusion extending radially outward from the fourth tapered surface of the inner tube toward the outer shell and along the axis, wherein the outer shell presses the first, second, third, and fourth protrusions back toward their respective tapered surfaces of the inner tube. Each protrusion is pressed against the outer shell, and each bulge is spaced apart from the inner surface of the outer shell.

2. The installation component according to claim 1, wherein, The outer shell includes a first shell and a second shell that cooperate with each other.

3. The installation component according to claim 2, wherein, Each protrusion includes a pair of cuts that define a boss between the pair of cuts; Both the first and second housings include a plurality of radially inwardly extending flanges that define a flat surface configured to abut against the surfaces of the plurality of protrusions. Each flange abuts against a corresponding cutout. The plurality of flanges restrict axial movement of the damping element relative to the housing.

4. The mounting component according to claim 2, wherein, At least one of the first shell and the second shell includes a radially inwardly extending full ridge, and both the first shell and the second shell include a radially inwardly extending first half-ridge and a radially inwardly extending second half-ridge. as well as When the first shell and the second shell are engaged, the first half-ridges abut against each other to form a full ridge, and the second half-ridges abut against each other to form a full ridge.

5. The mounting assembly according to claim 4, wherein, Both the first shell and the second shell include a radially inwardly extending full ridge; and The full ridge of the first shell extends axially outward from the edge of the first shell, and the full ridge of the second shell extends axially outward from the edge of the second shell.

6. The mounting assembly according to claim 4, wherein, Each first ridge and each second ridge extends axially outward from the edge of the corresponding first shell or second shell.

7. The mounting assembly according to claim 2, wherein, Both the first shell and the second shell include a radially inwardly extending ridge, wherein the ridge of the first shell extends inward from the inner surface of the first shell by a less distance than the ridge of the second shell extends inward from the inner surface of the second shell.

8. The mounting assembly according to claim 7, wherein, When the first shell mates with the second shell, the full ridge of the first shell is configured to abut against one of the plurality of ridges without compressing the ridge, and the full ridge of the second shell is configured to abut against and compress another of the plurality of ridges.

9. The mounting assembly according to claim 1, wherein, The damping element includes a first protrusion extending radially outward from a first tapered surface of the inner tube toward the outer shell and along the axis, a second protrusion extending radially outward from a second tapered surface of the inner tube toward the outer shell and along the axis, a third protrusion extending radially outward from a third tapered surface of the inner tube toward the outer shell and along the axis, and a fourth protrusion extending radially outward from a fourth tapered surface of the inner tube toward the outer shell and along the axis. The inner tube includes a first axially extending protrusion located between the first conical surface and the fourth conical surface, and a second axially extending protrusion located between the second conical surface and the third conical surface.

10. The mounting assembly according to claim 1, wherein, The inner tube includes a hole extending along the axis, the hole being configured to receive fasteners for connecting the motor to the frame.

11. The mounting assembly according to claim 1, wherein, The axial length of the inner tube is greater than the axial length of the damping element.

12. The mounting assembly according to claim 9, wherein, The housing includes a wavy inner surface that defines a plurality of flat surfaces configured as bearing surfaces for contacting and pressing against the first protrusion, the second protrusion, the third protrusion, and the fourth protrusion.

13. The mounting assembly according to claim 12, wherein, The wavy inner surface defines a plurality of grooves spaced apart from the damping element.

14. The mounting assembly according to claim 9, wherein, The damping element includes an annular plate configured to reduce the axial force applied to the mounting assembly.

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