Driving motor suspension mechanism

Abstract

The utility model discloses a drive motor suspension mechanism, and belongs to the technical field of new energy automobile parts. The suspension assembly mainly comprises an auxiliary frame, a first suspension assembly is arranged on one side of the auxiliary frame, a first damping mechanism is arranged in the first suspension assembly, a second suspension assembly and a third suspension assembly are arranged on the other side of the auxiliary frame in a spaced mode, and second damping mechanisms are arranged between the second suspension assembly and the auxiliary frame and between the third suspension assembly and the auxiliary frame respectively. The central axis of the first damping mechanism is perpendicular to the central axis of the second damping mechanism. The first damping mechanism is arranged in the first suspension assembly, the second damping mechanism is arranged between the second suspension assembly and the auxiliary frame, the second damping mechanism is arranged between the third suspension assembly and the auxiliary frame, and the central axis of the first damping mechanism is perpendicular to the central axis of the second damping mechanism. Omnibearing limiting and vibration suppression can be carried out on the driving motor in different directions, the damping effect of the whole suspension mechanism is improved, and the non-line-segment rigidity requirement of the suspension mechanism is met.

Description

Technical Field

[0001] This utility model belongs to the field of new energy vehicle parts technology, and more specifically, it relates to a drive motor mounting mechanism. Background Technology

[0002] With the rapid development of new energy vehicles, the drive motor, as one of the core components of new energy vehicles, plays a crucial role in the operation of the entire vehicle due to its performance and stability. During operation, the drive motor generates vibration and noise, which not only affect passenger comfort but may also adversely impact the lifespan of the motor itself and other components.

[0003] Chinese patent publication number CN119408392A discloses a drive motor mounting system. The motor assembly is located in front of the subframe assembly and between the left and right longitudinal beam assemblies. The mounting unit includes a left bracket connected to the left longitudinal beam assembly and a right bracket connected to the right longitudinal beam assembly; a left elastic support assembly connected to the left bracket and a right elastic support assembly connected to the right bracket; a left bracket connecting the left elastic support assembly and the motor assembly; a right bracket connecting the right elastic support assembly and the motor assembly; a rear mounting bracket connected to the subframe assembly; and a rear mounting assembly connecting the rear mounting bracket and the motor assembly. This system can improve the decoupling rate of the mounting unit, reduce the support reaction force at each mounting point, and reduce the displacement of each mounting pad.

[0004] However, the following problems still exist in actual use: 1. When the drive motor is mounted, the rubber pad is installed on the subframe and pressed into the subframe. This structure results in low axial stiffness at the mounting position and limited radial limit, which cannot meet the limit requirements of the radial nonlinear segment; 2. The above system occupies a large space. When the layout space is limited, it is arranged according to the torque axis, which makes the layout space unable to meet the requirements, and the drive motor cannot be mounted. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a drive motor suspension mechanism that can limit and suppress vibration of the drive motor in all directions, improve the shock absorption effect of the entire suspension mechanism, and meet the non-linear stiffness requirements of the suspension mechanism.

[0006] The aforementioned drive motor mounting mechanism includes a subframe. A first mounting assembly is provided on one side of the subframe, and a first shock-absorbing mechanism is provided inside the first mounting assembly. A second mounting assembly and a third mounting assembly are provided on the other side of the subframe at intervals. A second shock-absorbing mechanism is provided between the second and third mounting assemblies and the subframe, respectively. The central axis of the first shock-absorbing mechanism is perpendicular to the central axis of the second shock-absorbing mechanism.

[0007] Preferably, the first suspension assembly includes a first suspension frame, and the upper part of the first suspension frame is provided with a bushing that cooperates with the first shock absorption mechanism; the first shock absorption mechanism includes a first outer bushing, the first outer bushing is interference-fitted with the bushing, the first outer bushing is provided with a first inner bushing arranged coaxially, the first inner bushing is fixedly connected to the subframe by fasteners, and a limiting shock absorption component that fits tightly between the first inner bushing and the first outer bushing is provided.

[0008] Preferably, the inner end face of the first outer bushing is provided with at least one limiting protrusion, the outer side wall of the limiting and damping component is provided with a limiting groove that cooperates with the limiting protrusion, the two ends of the limiting groove are respectively provided with damping baffles, and the middle part of the limiting and damping component is provided with a first inner bushing hole that tightly cooperates with the first inner bushing.

[0009] Preferably, the first inner bushing has an assembly hole in the middle, and the outer wall of the first inner bushing has radial support one and radial support two. The limiting and damping assembly has damping holes one corresponding to radial support one and radial support two respectively, and the limiting groove one is located at the position opposite to radial support one.

[0010] Preferably, the second radial support is a T-shaped structure, and the first radial support is a straight line structure.

[0011] Preferably, the second shock-absorbing mechanism includes a second inner bushing, a third inner bushing hole in the middle of the second inner bushing, a second outer bushing coaxially arranged on the outside of the second inner bushing, and a shock-absorbing element that fits tightly between the second outer bushing and the second inner bushing.

[0012] Preferably, the second inner bushing is provided with a radial support three, and the shock absorber is provided with a second inner bushing hole and a plurality of shock absorber holes two that cooperate with the second inner bushing.

[0013] Preferably, the shock absorber has a shock-absorbing platform on the side near the second or third suspension assembly, the shock-absorbing platform cooperates with the end of the second outer bushing, and the side of the shock-absorbing platform that is in contact with the second or third suspension assembly has a shock-absorbing protrusion and a shock-absorbing groove.

[0014] Preferably, the inner end face of the second outer bushing is provided with a limiting protrusion II, and the outer end face of the second outer bushing is provided with a plurality of blind holes at positions corresponding to the limiting protrusion II. The outer end face of the shock absorber is provided with a limiting groove II that fits tightly with the limiting protrusion II.

[0015] Preferably, a mounting base is fixedly connected to the upper side of one side of the subframe, the first suspension assembly is fixedly connected to the mounting base by fasteners, and the second and third suspension assemblies are fixedly disposed on the other side of the subframe.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. By adding suspension assembly one, suspension assembly two, and suspension assembly three to the subframe, and using three-point positioning, the drive motor can be stably suspended and fixed, and the structure is compact, meeting the requirements of limited space layout.

[0018] 2. A shock-absorbing mechanism 1 is installed inside the suspension assembly 1. A shock-absorbing mechanism 2 is installed between the suspension assembly 2 and the subframe, respectively. The central axis of the shock-absorbing mechanism 1 is perpendicular to the central axis of the shock-absorbing mechanism 2. Through the perpendicular setting, the drive motor can be limited and the vibration suppressed in all directions, which improves the shock absorption effect of the entire suspension mechanism and meets the non-linear stiffness requirements of the suspension mechanism. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0021] Figure 3 This is a diagram showing the positional relationship between suspension assembly one, suspension assembly two, and suspension assembly three.

[0022] Figure 4 This is a schematic diagram showing the disassembly of the suspension assembly 1;

[0023] Figure 5 Top view of the limiting and damping assembly;

[0024] Figure 6 This is a schematic diagram showing the fit between suspension assembly two and suspension assembly three and the positioning sleeve;

[0025] Figure 7 This is a schematic diagram showing the disassembly of the second suspension assembly and the shock absorber.

[0026] Figure 8 This is a schematic diagram of the upper structure of the shock absorber.

[0027] Figure 9 This is a schematic diagram of the lower structure of the shock absorber.

[0028] Figure 10 This is a bottom view of the shock absorber.

[0029] Figure 11 This is a schematic diagram of the installation of the present invention and the drive motor;

[0030] Figure 12 This is a top view of the present invention in conjunction with the drive motor.

[0031] In the diagram, 1. Subframe; 101. Mounting seat; 2. Suspension assembly one; 201. First suspension bracket; 2011. Bushing; 2012. Mounting hole one; 202. First outer bushing; 2021. Limiting protrusion one; 203. Limiting damping component; 2031. Limiting groove one; 2032. Damping baffle; 2033. First inner bushing hole; 2034. Damping hole one; 204. First inner bushing; 2041. Assembly hole one; 2042. Radial support one; 2043. Radial support two 3. Suspension assembly two; 4. Suspension assembly three; 5. Positioning sleeve; 6. Shock absorption mechanism two; 601. Second outer bushing; 6011. Limiting protrusion two; 6012. Blind hole; 602. Shock absorber; 6021. Limiting groove two; 6022. Second inner bushing hole; 6023. Shock absorption platform; 6024. Shock absorption protrusion; 6025. Shock absorption groove; 6026. Shock absorption hole two; 603. Second inner bushing; 6031. Radial support three; 6032. Third inner bushing hole; 7. Drive motor. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings:

[0033] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] like Figures 1 to 12As shown, a drive motor mounting mechanism includes a subframe 1, which serves as the basic support structure for the entire mounting mechanism and plays a crucial load-bearing role in the power transmission and shock absorption of the vehicle. A first mounting assembly 2 is located on one side of the subframe 1. Specifically, a mounting base 101 is welded to the upper part of one side of the subframe 1, and the first mounting assembly 2 is fixedly connected to the mounting base 101 by bolts or other fasteners. A first shock-absorbing mechanism is installed inside the first mounting assembly 2, which effectively absorbs and buffers the vibration energy transmitted from the drive motor, reducing the impact of vibration on other vehicle components. On the other side of the subframe 1, a second mounting assembly 3 and a third mounting assembly 4 are provided at intervals. The second and third mounting assemblies 3 and 4 are respectively provided with mounting holes 2 for mounting and fixing the drive motor 7. Specifically, suspension assemblies 2 and 3 are fixedly mounted within the positioning sleeve 5 on the other side of the subframe 1. Through three-point positioning, suspension assemblies 2, 3, and 4 achieve stable mounting and fixation of the drive motor. Each suspension assembly 3 and 4 is connected to the subframe 1 by a shock-absorbing mechanism 6, with the central axis of shock-absorbing mechanism 1 perpendicular to the central axis of shock-absorbing mechanism 6. This perpendicular alignment allows for comprehensive limiting and vibration suppression of the drive motor in different directions, further improving the overall shock absorption effect of the suspension mechanism and meeting the non-linear stiffness requirements of the suspension mechanism.

[0035] like Figure 4 As shown, the suspension assembly 2 includes a first suspension frame 201. The upper part of the first suspension frame 201 is provided with a bushing 2011 that cooperates with the shock absorption mechanism. The bushing 2011 can ensure a stable connection between the shock absorption mechanism and the first suspension frame 201, and also provides necessary support for the normal operation of the shock absorption mechanism. The lower part of the first suspension frame 201 is provided with a plurality of mounting holes 2012 for mounting and fixing with the drive motor 7. The shock absorption mechanism includes a first outer bushing 202. During installation, the first outer bushing 202 and the bushing 2011 are interference-fitted to ensure a tight fit between the two and prevent loosening during operation. The first outer bushing 202 is provided with a first inner bushing 204 coaxially arranged inside. During installation, bolts and other fasteners pass through the first inner bushing 204 and are fixed to the mounting seat 101 on the subframe 1. A limiting and damping component 203 is provided between the first inner bushing 204 and the first outer bushing 202. The function of the limiting and damping component 203 is to absorb vibration energy while limiting the displacement of the drive motor 7 during operation, so as to ensure the working stability of the drive motor 7.

[0036] The inner end face of the first outer bushing 202 is provided with two opposing limiting protrusions 2021. The outer wall of the limiting damping component 203 is provided with a limiting groove 2031 that cooperates with the limiting protrusions 2021. Through the tight cooperation between the limiting protrusions 2021 and the limiting grooves 2031, the limiting damping component 203 can be effectively prevented from rotating circumferentially within the first outer bushing 202, ensuring the normal operation of the damping mechanism. Both ends of the limiting grooves 2031 are provided with damping baffles 2032, which are integrally formed with the limiting damping component 203. The two damping baffles 2032 abut against the two ends of the limiting protrusions 2021 respectively. The function of the damping baffles 2032 is to further enhance the damping effect of the limiting damping component 203, and also to restrict the axial movement of the limiting damping component 203. The limiting damping component 203 has a first inner liner hole 2033 in the middle that fits tightly with the first inner liner 204. The first inner liner hole 2033 allows the first inner liner 204 to be accurately installed in the limiting damping component 203, ensuring a tight fit between the two.

[0037] The first inner bushing 204 has a mounting hole 2041 in the middle, through which bolts pass to connect with the fixing seat 101, thereby realizing the installation and fixation of the entire suspension assembly 2. The outer wall of the first inner bushing 204 has two opposing radial supports 2042 and two opposing radial supports 2043. Radial supports 2043 are T-shaped, while radial supports 2042 are I-shaped. The radial supports 2042 and 2043 provide a larger support area, enhancing the radial support force of the first inner bushing 204 and improving its operational stability.

[0038] The limiting and damping component 203 has damping holes 2034 corresponding to radial support 2042 and radial support 2043, respectively. These damping holes 2034 can further absorb vibration energy and improve the damping effect. Furthermore, the limiting groove 2031 is positioned opposite to the radial support 2042, making the structure of the limiting and damping component 203 more rational and enabling it to better achieve its limiting and damping functions.

[0039] The second damping mechanism 6 includes a second inner bushing 603. A third inner bushing hole 6032 is provided in the middle of the second inner bushing 603 for bolts from the second or third suspension assembly 4 to pass through. A second outer bushing 601 is coaxially mounted on the outer side of the second inner bushing 603. A damping element 602 is provided between the second outer bushing 601 and the second inner bushing 603 for tight fitting. The function of the damping element 602 is to absorb and buffer the vibration energy transmitted from the second or third suspension assembly 4, reducing the impact of vibration on the subframe 1. Simultaneously, it limits the axial and radial vibration displacement of the drive motor 7 along the damping element 602.

[0040] The second inner bushing 603 is provided with a radial support 6031. The radial support 6031 enhances the radial support force of the second inner bushing 603, improving its operational stability. The damping component 602 has a second inner bushing hole 6022 that mates with the second inner bushing 603 and multiple damping holes 6026. The damping holes 6026 effectively absorb vibration energy, further improving the damping effect.

[0041] The damper 602 has a damping platform 6023 on the side near the second suspension assembly 3 or the third suspension assembly 4. The damping platform 6023 mates with the end of the second outer bushing 601. The side of the damping platform 6023 that is in contact with the second suspension assembly 3 or the third suspension assembly 4 has a damping protrusion 6024 and a damping groove 6025. The damping platform 6023 can further buffer the vibration transmitted from the second suspension assembly 3 or the third suspension assembly 4. The design of the damping protrusion 6024 and the damping groove 6025 can further enhance the damping effect and reduce the transmission of vibration.

[0042] The inner end face of the second outer bushing 601 is provided with two opposing limiting protrusions 6011. The outer end face of the second outer bushing 601, corresponding to the limiting protrusions 6011, is provided with multiple blind holes 6012. The blind holes 6012 serve a reinforcing function, increasing the structural strength of the second outer bushing 601. The outer end face of the damping member 602 is provided with a limiting groove 6021 that tightly engages with the limiting protrusions 6011. The tight engagement between the limiting protrusions 6011 and the limiting groove 6021 effectively prevents the damping member 602 from rotating circumferentially within the second outer bushing 601, ensuring the normal operation of the damping mechanism 6.

[0043] In this invention, both the limiting and damping component 203 and the damping element 602 are integrally molded from rubber. During processing, the subframe 1 is permeated and fixedly connected to two positioning sleeves 5, and the second outer bushing 601 is interference-fitted with the positioning sleeve 5. When the suspension assembly 1 is installed, the limiting and damping component 203 is aligned with the center of the fixing seat 101. The bolt passes through the center hole of the fixing seat 101 and the assembly hole 1 2041, and is tightened with a nut. At this time, the axial and radial directions of the bolt are limited, meeting the limiting requirements of the nonlinear segment of the suspension installation. Similarly, when the suspension assembly 2 and suspension assembly 3 are installed, the bolt passes through the suspension assembly 2 or suspension assembly 3 and the corresponding third inner bushing hole 6032, and is tightened with a nut. Since the axial direction of the third inner bushing hole 6032 is perpendicular to the axial direction of the assembly hole 1 2041, the drive motor 7 is limited and damped in multiple directions after assembly, and the installation is firm and reliable, meeting the nonlinear segment stiffness requirements.

[0044] The drive motor 7 is fixedly connected to the mounting holes 2 on the second and third suspension assemblies 3 and 4 respectively, and the mounting hole 2012 on the first suspension assembly 2, by means of bolts and other fasteners, thus completing the mounting installation of the drive motor 7.

[0045] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drive motor mounting mechanism, comprising a subframe (1), characterized in that: The subframe (1) has a suspension assembly 1 (2) on one side, and a shock absorber 1 is provided inside the suspension assembly 1 (2). The other side of the subframe (1) has a suspension assembly 2 (3) and a suspension assembly 3 (4) arranged at intervals. The suspension assembly 2 (3) and the suspension assembly 3 (4) are respectively provided with a shock absorber 2 (6) between the suspension assembly 2 (3) and the suspension assembly 3 (4) and the subframe (1). The central axis of the shock absorber 1 is perpendicular to the central axis of the shock absorber 2 (6).

2. The drive motor mounting mechanism according to claim 1, characterized in that: The suspension assembly (2) includes a first suspension frame (201), and a bushing (2011) is provided on the upper part of the first suspension frame (201) to cooperate with the shock absorption mechanism. The shock absorption mechanism includes a first outer bushing (202), which is interference-fitted with the bushing (2011). A first inner bushing (204) is coaxially arranged inside the first outer bushing (202). The first inner bushing (204) is fixedly connected to the subframe (1) by fasteners. A limiting shock absorption component (203) is provided between the first inner bushing (204) and the first outer bushing (202).

3. The drive motor mounting mechanism according to claim 2, characterized in that: The inner end face of the first outer bushing (202) is provided with at least one limiting protrusion (2021), the outer side wall of the limiting damping component (203) is provided with a limiting groove (2031) that cooperates with the limiting protrusion (2021), the two ends of the limiting groove (2031) are respectively provided with damping baffles (2032), and the middle part of the limiting damping component (203) is provided with a first inner bushing hole (2033) that closely cooperates with the first inner bushing (204).

4. The drive motor mounting mechanism according to claim 3, characterized in that: The first inner bushing (204) has an assembly hole (2041) in the middle. The outer wall of the first inner bushing (204) has a radial support (2042) and a radial support (2043). The limiting and damping assembly (203) has a damping hole (2034) corresponding to the radial support (2042) and the radial support (2043) respectively. The limiting groove (2031) is located at a position opposite to the radial support (2042).

5. A drive motor mounting mechanism according to claim 4, characterized in that: The radial support two (2043) is a T-shaped structure, and the radial support one (2042) is a straight-line structure.

6. The drive motor mounting mechanism according to claim 1, characterized in that: The second damping mechanism (6) includes a second inner bushing (603), a third inner bushing hole (6032) is provided in the middle of the second inner bushing (603), a second outer bushing (601) is provided on the outer side of the second inner bushing (603) and a damping component (602) is provided between the second outer bushing (601) and the second inner bushing (603) for close fit.

7. A drive motor mounting mechanism according to claim 6, characterized in that: The second inner bushing (603) is provided with a radial support three (6031) on the outside, and the shock absorber (602) is provided with a second inner bushing hole (6022) and a plurality of shock absorber holes two (6026) that cooperate with the second inner bushing (603).

8. A drive motor mounting mechanism according to claim 7, characterized in that: The shock absorber (602) is provided with a shock absorber platform (6023) on the side near the second suspension assembly (3) or the third suspension assembly (4). The shock absorber platform (6023) is engaged with the end of the second outer bushing (601). The side of the shock absorber platform (6023) that is in contact with the second suspension assembly (3) or the third suspension assembly (4) is provided with a shock absorber protrusion (6024) and a shock absorber groove (6025).

9. A drive motor mounting mechanism according to claim 8, characterized in that: The inner end face of the second outer bushing (601) is provided with a limiting protrusion two (6011), and the outer end face of the second outer bushing (601) is provided with a plurality of blind holes (6012) at the position corresponding to the limiting protrusion two (6011). The outer end face of the shock absorber (602) is provided with a limiting groove two (6021) that fits tightly with the limiting protrusion two (6011).

10. A drive motor mounting mechanism according to any one of claims 1 to 9, characterized in that: A mounting base (101) is fixedly connected to one side of the subframe (1). The first suspension assembly (2) is fixedly connected to the mounting base (101) by fasteners. The second suspension assembly (3) and the third suspension assembly (4) are fixedly installed on the other side of the subframe (1).

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