Suspension structure and new energy automobile
By adopting a combined structure of active side components and passive side components in the suspension structure, and using the fastener to penetrate bushings and positioning pins, the problem of difficult and insufficient accuracy of the suspension structure is solved, and more efficient vibration isolation and higher installation accuracy are achieved.
Patent Information
- Application Number
- CN202420659069.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-01
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-04-01
AI Technical Summary
The existing suspension structure is difficult to arrange and insufficient accuracy, which makes it difficult to improve the vibration isolation effect.
A combined structure of an active side assembly and a passive side assembly is adopted, wherein the fastener is directly penetrated into the first bushing, and positioning is achieved using positioning pins and positioning holes to improve assembly efficiency and installation accuracy.
The design of the suspension structure is simplified, the installation accuracy and connection strength are improved, the secondary vibration isolation effect is enhanced, and the safety and user experience of the vehicle are improved.
Smart Images
Figure CN222780254U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of suspension technology, and in particular to a suspension structure and a new energy vehicle. Background Art
[0002] At present, a suspension structure is often set between the powertrain and the frame of new energy vehicles. On the one hand, the suspension structure supports the powertrain, and on the other hand, it is also used to isolate the vibration transmitted from the powertrain to the frame, so as to reduce the vibration and noise of the powertrain and improve the vehicle's user experience.
[0003] In the related art, some suspension structures will use a secondary vibration isolation setting to improve the NVH performance of the vehicle. However, the existing secondary vibration isolation suspension structure is usually more complicated, and because more and more parts for wheel steering are arranged around the suspension structure, the layout and design of the suspension structure are more difficult, and it is difficult to improve the vibration isolation effect of the suspension structure. In addition, the two parts of the secondary vibration isolation device are often connected by a single bolt, which also leads to insufficient overall installation accuracy. Utility Model Content
[0004] Based on this, it is necessary to provide a suspension structure and a new energy vehicle to solve the problem that the existing suspension structure is difficult to arrange and lacks precision.
[0005] The present application provides a suspension structure, which is used to connect a powertrain and a subframe. The suspension structure includes an active side component and a passive side component. The active side component includes a suspension bracket, a fastener and a positioning portion. The fastener is connected to one end of the suspension bracket, and the positioning portion is sleeved on the circumference of the fastener and connected to the fastener; the passive side component includes a first bushing and a matching portion that are connected to each other, and the matching portion and the first bushing are sequentially passed through one end of the fastener away from the suspension bracket, and are connected to the first bushing; wherein, one of the positioning portion and the matching portion is provided with a positioning pin, and the other is provided with a positioning hole, and the positioning pin is inserted into the positioning hole.
[0006] In one embodiment, the number of the positioning pins and the number of the positioning holes are both plural, and the plurality of positioning pins and the plurality of positioning holes are arranged in one-to-one correspondence.
[0007] In one of the embodiments, the active side component further includes a locking nut, which is disposed on a side of the first bushing away from the suspension bracket, and the locking nut is threadedly connected to the fastener to lock the first bushing to the fastener.
[0008] In one embodiment, the suspension bracket and the fastener are an integrated structure, or the suspension bracket and the fastener are fixed by welding.
[0009] In one of the embodiments, the suspension bracket is provided with a mounting hole, and the active side component further comprises a second bushing, and the second bushing is disposed in the mounting hole; wherein the axis of the second bushing and the axis of the first bushing are perpendicular to each other.
[0010] In one embodiment, the second bushing and the mounting hole are interference fit.
[0011] In one of the embodiments, the suspension bracket is further provided with a fixing hole for connecting to the power assembly.
[0012] In one embodiment, there are multiple fixing holes, and the multiple fixing holes are arranged on the suspension bracket at intervals.
[0013] The present application also provides a new energy vehicle, which includes a subframe, a powertrain and the suspension structure described in any one of the above embodiments, one end of the active side component is connected to the powertrain, and the other end is connected to the subframe through the passive side component.
[0014] In one embodiment, the subframe is provided with an assembly hole, and the first bushing is press-fitted into the assembly hole.
[0015] Compared with the prior art, the suspension structure and new energy vehicle provided by the present application achieve a fixed connection between the active side component and the passive side component by directly passing the fastener through the first bushing. The overall structure is simple, and the space occupied by the suspension structure is greatly reduced, thereby facilitating the layout of the steering system at the wheel. In addition, the positioning is achieved by using locating pins and locating holes, which can not only improve the assembly efficiency of the active side component and the passive side component, but also effectively improve the accuracy of the installation position between the two, thereby facilitating the assembly efficiency of the suspension structure and other parts. At the same time, the setting of the locating pin also improves the connection strength between the active side component and the passive side component, reduces the torque fluctuation generated when the fastener is connected, and can avoid the breakage of the fastener due to the huge impact force generated by the vibration of the powertrain, thereby greatly improving the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 A schematic structural diagram of a suspension structure according to an embodiment of the present application;
[0018] Figure 2 An exploded view of a suspension structure according to an embodiment of the present application;
[0019] Figure 3 A schematic diagram of the structure of an active side component of an embodiment provided by the present application;
[0020] Figure 4 A schematic structural diagram of a passive side component of an embodiment provided in the present application.
[0021] The symbols in the figure mean the following:
[0022] 100. Suspension structure; 10. Active side component; 11. Suspension bracket; 111. Mounting hole; 112. Fixing hole; 12. Fastener; 13. Positioning portion; 131. Positioning pin; 14. Locking nut; 15. Second bushing; 20. Passive side component; 21. First bushing; 22. Matching portion; 221. Positioning hole; 30. Subframe; 31. Assembly hole. DETAILED DESCRIPTION
[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0024] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0026] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0027] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0028] At present, a suspension structure is often set between the powertrain and the frame of new energy vehicles. On the one hand, the suspension structure supports the powertrain, and on the other hand, it is also used to isolate the vibration transmitted from the powertrain to the frame, so as to reduce the vibration and noise of the powertrain and improve the vehicle's user experience.
[0029] In the related art, some suspension structures will use a secondary vibration isolation setting to improve the NVH performance of the vehicle. However, the existing secondary vibration isolation suspension structure is usually more complicated, and because more and more parts for wheel steering are arranged around the suspension structure, the layout and design of the suspension structure are more difficult, and it is difficult to improve the vibration isolation effect of the suspension structure. In addition, the two parts of the secondary vibration isolation device are often connected by a single bolt, which also leads to insufficient overall installation accuracy.
[0030] See also Figure 1-Figure 4 In order to solve the problem that the existing suspension structure is difficult to arrange and has insufficient precision, the present application provides a suspension structure 100, which is used to connect the powertrain (not shown) and the subframe 30. Specifically, the suspension structure 100 includes an active side component 10 and a passive side component 20, wherein the active side component 10 is used to connect the powertrain, and the passive side component 20 is used to connect the subframe 30, and the active side component 10 and the passive side component 20 cooperate to form a secondary vibration isolation, which can achieve vibration isolation decoupling and is conducive to improving the vibration isolation rate of the system.
[0031] It should be noted that the powertrain of this embodiment is mainly the motor of a new energy vehicle, which has a large output torque and a fast response, which makes the bolts in the traditional secondary vibration isolation device more prone to overload and breakage.
[0032] Based on this, Figure 2-Figure 4 As shown, the active side component 10 provided in the present application includes a suspension bracket 11, a fastener 12 and a positioning portion 13, wherein the fastener 12 is connected to one end of the suspension bracket 11, and the positioning portion 13 is sleeved on the peripheral side of the fastener 12 and connected to the fastener 12. The passive side component 20 includes a first bushing 21 and a matching portion 22 connected to each other, wherein the matching portion 22 and the first bushing 21 are sequentially passed through the end of the fastener 12 away from the suspension bracket 11, and connected to the first bushing 21. Among them, one of the positioning portion 13 and the matching portion 22 is provided with a positioning pin 131, and the other is provided with a positioning hole 221, and the positioning pin 131 is inserted into the positioning hole 221.
[0033] It is understandable that the present application achieves a fixed connection between the active side component 10 and the passive side component 20 by directly passing the fastener 12 through the first bushing 21, which makes the overall structure simple and greatly reduces the space occupied by the suspension structure 100, thereby facilitating the layout of the steering system at the wheel. In addition, the positioning is achieved by using the locating pin 131 and the locating hole 221, which not only improves the assembly efficiency of the active side component 10 and the passive side component 20, but also effectively improves the accuracy of the installation position between the two, thereby facilitating the assembly efficiency of the suspension structure 100 and the remaining parts. At the same time, the provision of the locating pin 131 also improves the connection strength between the active side component 10 and the passive side component 20, reduces the torque fluctuation generated when the fastener 12 is connected, and can avoid the occurrence of the fastener 12 breaking due to the huge impact force generated by the vibration of the powertrain, thereby greatly improving the safety of the vehicle.
[0034] Specifically, in one embodiment, if Figure 1 and Figure 2 As shown, the subframe 30 is provided with an assembly hole 31, and the first bushing 21 is pressed into the assembly hole 31. In this way, a firm connection between the first bushing 21 and the subframe 30 can be achieved, and the occupied space of the passive side component 20 can be reduced. The assembly hole 31 can be provided on the crossbeam or longitudinal beam of the subframe 30.
[0035] In one embodiment, if Figure 2 As shown, the active side component 10 also includes a locking nut 14, which is arranged on the side of the first bushing 21 away from the suspension bracket 11, and the locking nut 14 is threadedly connected to the fastener 12 to lock the first bushing 21 to the fastener 12. The locking of the second bushing 15 is achieved by the cooperation of the locking nut 14 and the fastener 12, which can prevent the active side component 10 and the passive side component 20 from being separated, thereby effectively ensuring the safety of the suspension structure 100. In addition, the threaded connection between the locking nut 14 and the fastener 12 is conducive to the subsequent disassembly and maintenance of the active side component 10.
[0036] It can be understood that when the locking nut 14 and the fastener 12 are threadedly matched, the cooperation between the locating pin 131 and the locating hole 221 can greatly improve the safety factor of the torsional moment of the fastener 12, reduce the torque fluctuation of the fastener 12 and the locking nut 14, thereby improving the problem of torque loss between the locking nut 14 and the fastener 12.
[0037] Further, in one embodiment, if Figure 3 and Figure 4 As shown, there are multiple locating pins 131 and locating holes 221, and the multiple locating pins 131 and the multiple locating holes 221 are arranged one by one. In this way, multiple positioning points can be formed between the active side component 10 and the passive side component 20, so as to further improve the connection strength and installation accuracy between the active side component 10 and the passive side component 20, and further ensure the safety of the fastener 12.
[0038] Specifically, the present application sets the positioning pin 131 on the positioning portion 13 and the positioning hole 221 on the matching portion 22, and the number of the positioning pins 131 and the positioning hole 221 are both two, and the setting difficulty is relatively low, wherein the two positioning pins 131 are symmetrically arranged relative to the axis of the fastener 12, and the position of the positioning hole 221 on the matching portion 22 is adapted to the position of the positioning pin 131.
[0039] Of course, in other embodiments, the positioning pin 131 may be provided on the matching portion 22, and the positioning hole 221 may be provided on the positioning portion 13, as long as the same effect can be achieved. In addition, the number of the positioning pin 131 and the positioning hole 221 may be three or four, etc., which is not limited here.
[0040] In one embodiment, the suspension bracket 11 and the fastener 12 are an integrated structure, which is beneficial to improving the connection strength between the suspension bracket 11 and the fastener 12, and threads can also be integrally processed on the fastener 12, thereby greatly improving the overall processing efficiency.
[0041] In other embodiments, the suspension bracket 11 and the fastener 12 may also be fixed by welding, screwing, etc., as long as a firm connection between the suspension bracket 11 and the fastener 12 can be ensured.
[0042] In one embodiment, if Figure 3 As shown, the suspension bracket 11 is provided with a mounting hole 111, and the active side component 10 further includes a second bushing 15, which is installed in the mounting hole 111. The axis of the second bushing 15 and the axis of the first bushing 21 are perpendicular to each other.
[0043] That is, this embodiment achieves vibration attenuation through the cooperation of at least two bushings, wherein the vertical arrangement of the axes of the first bushing 21 and the second bushing 15 can achieve vibration isolation and decoupling. Compared with the structure in which a single bushing takes into account vibration attenuation in three directions in traditional technology, this embodiment can greatly improve the vibration isolation rate of the system.
[0044] Exemplarily, in this embodiment, the axial direction of the first bushing 21 is the X direction of the vehicle, and the axial direction of the second bushing 15 is the Y direction of the vehicle. At this time, the second bushing 15 is mainly used to attenuate vibrations in the X and Z directions of the vehicle.
[0045] To ensure a firm connection between the second bushing 15 and the suspension bracket 11 , and to further improve the integration of the suspension structure 100 and reduce vibration and noise, in one embodiment, the second bushing 15 and the mounting hole 111 are interference fit.
[0046] Further, in one embodiment, if Figure 3 As shown, the suspension bracket 11 is also provided with a fixing hole 112 for connecting the power assembly, so as to facilitate the connection between the power assembly and the suspension structure 100.
[0047] Furthermore, in one embodiment, there are multiple fixing holes 112, and the multiple fixing holes 112 are arranged at intervals on the suspension bracket 11. In this way, the connection strength between the powertrain and the suspension structure 100 can be further improved, thereby greatly improving the installation stability of the powertrain.
[0048] The present application also provides a new energy vehicle, which includes a subframe 30, a powertrain and a suspension structure 100 described in any one of the above embodiments, one end of the active side component 10 is connected to the powertrain, and the other end is connected to the subframe 30 through the passive side component 20.
[0049] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0050] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. A suspension structure for connecting a powertrain and a subframe (30), characterized in that: The suspension structure comprises an active side component (10) and a passive side component (20), wherein the active side component (10) comprises a suspension bracket (11), a fastener (12) and a positioning portion (13), wherein the fastener (12) is connected to one end of the suspension bracket (11), and the positioning portion (13) is sleeved on the circumference of the fastener (12) and connected to the fastener (12); The passive side component (20) comprises a first bushing (21) and a matching portion (22) connected to each other, and an end of the fastener (12) away from the suspension bracket (11) is sequentially penetrated by the matching portion (22) and the first bushing (21), and is connected to the first bushing (21); One of the positioning portion (13) and the matching portion (22) is provided with a positioning pin (131), and the other is provided with a positioning hole (221), and the positioning pin (131) is inserted into the positioning hole (221).
2. The suspension structure according to claim 1, characterized in that: The number of the positioning pins (131) and the number of the positioning holes (221) are both multiple, and the multiple positioning pins (131) and the multiple positioning holes (221) are arranged in a one-to-one correspondence.
3. The suspension structure according to claim 1, characterized in that: The active side component (10) further comprises a locking nut (14), wherein the locking nut (14) is arranged on a side of the first bushing (21) away from the suspension bracket (11), and the locking nut (14) is threadedly connected to the fastener (12) to lock the first bushing (21) to the fastener (12).
4. The suspension structure according to claim 1, characterized in that: The suspension bracket (11) and the fastener (12) are an integrated structure, or the suspension bracket (11) and the fastener (12) are fixed by welding.
5. The suspension structure according to claim 1, characterized in that: The suspension bracket (11) is provided with a mounting hole (111), and the active side component (10) further comprises a second bushing (15), wherein the second bushing (15) is installed in the mounting hole (111); The axis of the second bushing (15) and the axis of the first bushing (21) are perpendicular to each other.
6. The suspension structure according to claim 5, characterized in that: The second bushing (15) and the mounting hole (111) are interference fit.
7. The suspension structure according to claim 1, characterized in that: The suspension bracket (11) is also provided with a fixing hole (112) for connecting the power assembly.
8. The suspension structure according to claim 7, characterized in that: There are a plurality of fixing holes (112), and the plurality of fixing holes (112) are arranged at intervals on the suspension bracket (11).
9. A new energy vehicle, characterized in that: It comprises a subframe (30), a powertrain and a suspension structure according to any one of claims 1 to 8, wherein one end of the active side component (10) is connected to the powertrain, and the other end is connected to the subframe (30) via the passive side component (20).
10. The new energy vehicle according to claim 9, characterized in that: The auxiliary frame (30) is provided with an assembly hole (31), and the first bushing (21) is press-fitted into the assembly hole (31).