Suspension and vehicle
By designing a combination of brackets and bushings in the vehicle suspension structure, the problem of insufficient displacement displacement and torsional limiting capabilities of hybrid vehicle models is solved, and higher torsional limiting capabilities, fatigue durability and vibration isolation performance are achieved, while reducing weight and cost.
Patent Information
- Application Number
- CN202420556118.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-03-21
AI Technical Summary
The rapid torque reversal of hybrid models in a certain speed range results in a large deviation of the powertrain displacement, insufficient limiting ability and fatigue durability of anti-torsion lever suspension, and the system weight and cost of dual-torsion lever suspension.
A suspension structure is designed, including a bracket, a first bushing, a second bushing and a third bushing. By providing these bushings on the bracket, the suspension is connected to the subframe and the powertrain to improve torsional limiting ability and fatigue durability.
The suspension structure improves torsional limiting capability, fatigue durability and vibration isolation, reducing suspension weight and cost while maintaining high adaptability and compatibility.
Smart Images
Figure CN222819898U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of vehicles, in particular to a suspension and a vehicle. Background Art
[0002] At present, with the introduction of national energy-saving and emission-reduction policies, environmental protection has received more and more attention, and hybrid models have become more and more popular. The driving motor of hybrid models has large torque, which is rapidly converted in a certain speed range. The torque will reverse from positive to negative in a very short time, causing the pull-rod suspension to be subjected to large and rapidly changing impacts and loads, which in turn causes a large displacement of the powertrain.
[0003] In the related art, in order to suppress the problem of large displacement offset of the powertrain, the hybrid vehicle model is set with one or two torsion rod suspensions. The torsion limiting ability of a single torsion rod suspension is slightly poor, and the rubber body of the limiting mechanism is subject to high-frequency collisions and no buffering energy is released, resulting in poor fatigue durability of the rubber body, large torque direction stiffness and rapid stiffness increase, which leads to a decrease in vibration isolation performance. The torsion limiting ability of two torsion rod suspensions is good, but the number of products is large, the system weight is high and the cost is high, which is not conducive to the control of vehicle weight and cost. Utility Model Content
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a suspension that can improve the problem of large displacement of the powertrain, as well as improve the torsion limiting capacity and fatigue durability performance.
[0005] The utility model further provides a vehicle.
[0006] The suspension according to the utility model includes: a bracket, a first bushing, a second bushing and a third bushing, the first bushing is arranged at one end of the bracket in the length direction, the first bushing is used to connect with the subframe, the second bushing is arranged at the other end of the bracket in the length direction, the third bushing is arranged between the two ends of the bracket in the length direction, the second bushing and the third bushing are used to connect with the powertrain, and the axes of the second bushing and the third bushing are parallel.
[0007] According to the suspension of the utility model, the first bushing, the second bushing and the third bushing are arranged on the bracket, so that the suspension can be connected with the subframe and the powertrain, and the first bushing and the second bushing are respectively located at the two ends of the bracket, and the axes of the second bushing and the third bushing are parallel, so that the suspension can have the characteristics of commonality, platformization, serialization, construction adaptability and good compatibility, and can also improve the torsional limiting ability, fatigue durability and vibration isolation performance of the suspension, thereby reducing the weight of the suspension and saving costs.
[0008] In some examples of the present invention, the axes of the second bushing and the third bushing are both perpendicular to the axis of the first bushing.
[0009] In some examples of the present invention, the bracket has a first mounting hole, a second mounting hole and a third mounting hole, the first mounting hole and the second mounting hole are located at both ends of the length direction of the bracket, the third mounting hole is located between the two ends of the length direction of the bracket, the first bushing is arranged in the first mounting hole, the second bushing is arranged in the second mounting hole, and the third bushing is arranged in the third mounting hole.
[0010] In some examples of the present invention, the bracket is provided with a first reinforcing rib, and the first reinforcing rib extends from the outer peripheral wall of the first mounting hole to the outer peripheral wall of the second mounting hole.
[0011] In some examples of the present invention, the first reinforcing rib includes: a first rib segment, a second rib segment and a third rib segment, the first rib segment is arranged on the outer peripheral wall of the first mounting hole, the second rib segment is connected to the first rib segment, the second rib segment extends along a side edge in the width direction of the bracket, the third rib segment is connected to the second rib segment, and the third rib segment is connected to the outer peripheral wall of the second mounting hole after being bent relative to the second rib segment.
[0012] In some examples of the present invention, the bracket is provided with a second reinforcing rib, and the second reinforcing rib is provided on the outer peripheral wall of the third mounting hole.
[0013] In some examples of the present invention, there are multiple second reinforcing ribs, at least two of the multiple second reinforcing ribs extend in a direction adjacent to the first mounting hole and are close to each other, at least two of the multiple second reinforcing ribs extend in a direction adjacent to the second mounting hole and are away from each other, and at least one of the multiple second reinforcing ribs is connected to the first reinforcing rib.
[0014] In some examples of the present invention, the bracket has a reference plane, and two surfaces of the bracket in the thickness direction are symmetrical about the reference plane; the first reinforcing rib and the second reinforcing rib are respectively arranged on the two surfaces of the bracket in the thickness direction and are symmetrical about the reference plane.
[0015] In some examples of the present invention, the bracket is provided with a third reinforcing rib, the third reinforcing rib is provided on the outer side wall of the second mounting hole and extends circumferentially, and the end of the third reinforcing rib is connected to the first reinforcing rib.
[0016] The vehicle according to the utility model comprises: the suspension mentioned above.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 is a schematic diagram of a first angle structure of a suspension according to an embodiment of the utility model;
[0020] Figure 2 is a schematic diagram of a second angle structure of a suspension according to an embodiment of the utility model;
[0021] Figure 3 It is a schematic diagram of the partial structure of the suspension according to an embodiment of the utility model.
[0022] Reference numerals:
[0023] 1. Suspension;
[0024] 2. Bracket; 21. First mounting hole; 22. Second mounting hole; 23. Third mounting hole; 24. First reinforcing rib; 241. First rib segment; 242. Second rib segment; 243. Third rib segment; 25. Second reinforcing rib; 26. Third reinforcing rib; 3. First bushing; 4. Second bushing; 5. Third bushing. DETAILED DESCRIPTION
[0025] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.
[0026] Reference below Figure 1-Figure 3 A suspension 1 according to an embodiment of the present invention is described, and the suspension 1 is applied to a vehicle.
[0027] like Figure 1-Figure 3 As shown, the suspension 1 according to the utility model includes: a bracket 2, a first bushing 3, a second bushing 4 and a third bushing 5. The first bushing 3 is arranged at one end of the bracket 2 in the length direction, and the first bushing 3 is used to connect with the subframe. The second bushing 4 is arranged at the other end of the bracket 2 in the length direction. The third bushing 5 is arranged between the two ends of the bracket 2 in the length direction. The second bushing 4 and the third bushing 5 are used to connect with the powertrain, and the axes of the second bushing 4 and the third bushing 5 are parallel.
[0028] It can be understood that the bracket 2, the first bushing 3, the second bushing 4 and the third bushing 5 constitute the main structure of the suspension 1, and the first bushing 3 and the second bushing 4 are respectively located at the two ends of the bracket 2 in the length direction, so as to facilitate the first bushing 3 to be connected to the subframe and the second bushing 4 to be connected to the powertrain, so that the suspension 1 can be connected to the subframe and the powertrain, and the third bushing 5 is located between the first bushing 3 and the second bushing 4, and the third bushing 5 is arranged close to the second bushing 4, so that the third bushing 5 can be connected to the powertrain, and the connection between the suspension 1 and the powertrain can be made more firmly, the second bushing 4 and the third bushing 5 are arranged in the middle position in the left-right direction of the bracket 2, and the second bushing 4 and the third bushing 5 are arranged at intervals along the length direction of the bracket 2, so as to enhance the torsional limiting ability of the suspension 1. For example, the first bushing 3 is connected to the subframe by an M14 bolt, and the second bushing 4 and the third bushing 5 are connected by an M12 bolt. The second bushing 4 and the third bushing 5 form a two-stage or multi-stage torsion limiting mechanism, which is convenient for controlling the displacement of the powertrain and can also avoid the problem of large torque direction stiffness and rapid stiffness increase leading to decreased vibration isolation performance, thereby improving the torsion limiting capability, improving high-frequency impact and improving fatigue durability.
[0029] Specifically, the first bushing 3, the second bushing 4 and the third bushing 5 are rubber or buffer blocks, and one side of the first bushing 3, the second bushing 4 and the third bushing 5 is connected to the bracket, and a buffer block is arranged between the other side and the bracket, and the parts of the first bushing 3, the second bushing 4 and the third bushing 5 connected to the bracket are staggered with the buffer blocks. For example, the parts of the first bushing 3, the second bushing 4 and the third bushing 5 connected to the bracket and the buffer blocks are 4 or 2 respectively, so as to reduce the transmission of the vibration of the suspension 1. When the vehicle accelerates, decelerates, brakes or is abused, the peak torque of the drive motor is large and rapidly converted in a certain speed range. The torque will reverse from positive to negative in a very short time, and the powertrain will receive the impact force and load force, thereby driving the compression or stretching of the second bushing 4 and the third bushing 5, and then transmitting the residual impact force and load force to the first bushing through the bracket 2. 3. Repeatedly and rapidly cycle the pull rod movement until the excitation energy is absorbed and consumed, thereby improving the NVH (Noise, Vibration, Harshness) performance of the vehicle, and the stiffness of the second bushing 4 and the third bushing 5 are similar, the stiffness of the first bushing 3 is less than the stiffness of the second bushing 4, or the stiffness of the first bushing 3, the second bushing 4 and the third bushing 5 are adjusted and combined according to actual needs, the structural form or size of the first bushing 3, the second bushing 4 and the third bushing 5 can be selected according to actual conditions, or they can be designed in pairs. If one of the second bushing 4 or the third bushing 5 is disconnected, the suspension 1 can also act as a resonator, thereby balancing the excitation force caused by the resonance of the powertrain, and then improving the torsional limiting capability, fatigue durability and vibration isolation performance of the suspension 1.
[0030] Therefore, by arranging the first bushing 3, the second bushing 4 and the third bushing 5 on the bracket 2, the suspension 1 can be connected to the subframe and the powertrain, and the first bushing 3 and the second bushing 4 are respectively located at the two ends of the bracket 2, and the axes of the second bushing 4 and the third bushing 5 are parallel, so that the suspension 1 can have the characteristics of commonality, platformization, serialization, construction adaptability and good compatibility, and can also improve the torsional limiting ability, fatigue durability and vibration isolation performance of the suspension 1, thereby reducing the weight of the suspension 1 and saving costs.
[0031] In particular, if Figure 1 and Figure 2 As shown, the axes of the second bushing 4 and the third bushing 5 are perpendicular to the axis of the first bushing 3. This arrangement allows the second bushing 4 and the third bushing 5 to be in the same horizontal plane. The first bushing 3 is arranged along the up and down directions of the bracket 2, so as to facilitate the connection between the first bushing 3 and the subframe, and the second bushing 4 and the third bushing 5 and the powertrain, thereby enabling the suspension 1 to have the characteristics of commonality, platformization, serialization, construction adaptability and good compatibility.
[0032] Among them, Figure 3 As shown, the bracket 2 has a first mounting hole 21, a second mounting hole 22 and a third mounting hole 23. The first mounting hole 21 and the second mounting hole 22 are located at two ends of the length direction of the bracket 2, and the third mounting hole 23 is located between the two ends of the length direction of the bracket 2. The first bushing 3 is arranged in the first mounting hole 21, the second bushing 4 is arranged in the second mounting hole 22, and the third bushing 5 is arranged in the third mounting hole 23. In other words, the first mounting hole 21 and the third mounting hole 23 are respectively located at two ends of the length direction of the bracket 2, the third mounting hole 23 is located between the first mounting hole 21 and the second mounting hole 22, and the third mounting hole 23 is arranged close to the second mounting hole 22, so that the first mounting hole 21 is convenient for limiting the first bushing 3, the second mounting hole 22 is convenient for limiting the second bushing 4, and the third mounting hole 23 is convenient for limiting the third bushing 5, so that the first bushing 3 can be installed in the first mounting hole 21, the second bushing 4 is installed in the second mounting hole 22, and the third bushing 5 is installed in the third mounting hole 23.
[0033] In addition, if Figure 1-Figure 3 As shown, the bracket 2 is provided with a first reinforcing rib 24, and the first reinforcing rib 24 extends from the outer peripheral wall of the first mounting hole 21 to the outer peripheral wall of the second mounting hole 22. It can be understood that the first reinforcing rib 24 extends along the length direction of the bracket 2, and one end of the first reinforcing rib 24 is connected to the outer periphery of the first mounting hole 21, and the other end is connected to the outer periphery of the second mounting hole 22, so that the rigidity of the first mounting hole 21 and the second mounting hole 22 can be improved, and then the transmission of the vibration of the suspension 1 can be reduced.
[0034] Among them, Figure 1-Figure 3 As shown, the first reinforcing rib 24 includes: a first rib segment 241, a second rib segment 242 and a third rib segment 243. The first rib segment 241 is arranged on the outer peripheral wall of the first mounting hole 21, the second rib segment 242 is connected to the first rib segment 241, the second rib segment 242 extends along a side edge of the width direction of the bracket 2, the third rib segment 243 is connected to the second rib segment 242, and the third rib segment 243 is connected to the outer peripheral wall of the second mounting hole 22 after being bent relative to the second rib segment 242. That is to say, the first rib segment 241, the second rib segment 242 and the third rib segment 243 constitute the main structure of the first reinforcing rib 24, the first rib segment 241 is located at the periphery of the first mounting hole 21, thereby improving the rigidity of the first mounting hole 21, the second rib segment 242 is connected to one end of the first rib segment 241, and the second rib segment 242 is arranged along the length direction of the bracket 2, thereby improving the structural strength of the bracket 2, the third rib segment 243 is connected to the other end of the second rib segment 242, and the third rib segment 243 is bent relative to the second rib segment 242 and arranged at the periphery of the second mounting hole 22, thereby improving the rigidity of the second mounting hole 22, and further reducing the transmission of vibration of the suspension 1.
[0035] In addition, if Figure 1-Figure 3 As shown, the bracket 2 is provided with a second reinforcing rib 25, and the second reinforcing rib 25 is provided on the outer peripheral wall of the third mounting hole 23. It can be understood that the second reinforcing rib 25 is located on the surface of the bracket 2, and the second reinforcing rib 25 is located on the outer periphery of the third mounting hole 23, so that the structural strength of the bracket 2 and the rigidity of the third mounting hole 23 can be improved, and then the torsional limiting capacity, fatigue durability and vibration isolation performance of the suspension 1 can be improved.
[0036] In particular, if Figure 1-Figure 3 As shown, there are multiple second reinforcing ribs 25, at least two of the multiple second reinforcing ribs 25 extend in the direction adjacent to the first mounting hole 21 and are close to each other, at least two of the multiple second reinforcing ribs 25 extend in the direction adjacent to the second mounting hole 22 and are away from each other, and at least one of the multiple second reinforcing ribs 25 is connected to the first reinforcing rib 24. In other words, the multiple second reinforcing ribs 25 are symmetrically arranged along the length direction of the bracket 2, wherein two second reinforcing ribs 25 extend in the direction of the second mounting hole 22, and the other second reinforcing ribs 25 can be selectively connected to the first reinforcing rib 24, so that the structural strength of the bracket 2 and the rigidity of the third mounting hole 23 can be improved, and then the torsional limiting capacity, fatigue durability and vibration isolation performance of the suspension 1 can be improved.
[0037] In particular, if Figure 1-Figure 3 As shown, the bracket 2 has a reference plane, and the two surfaces of the bracket 2 in the thickness direction are symmetrical about the reference plane; the first reinforcing rib 24 and the second reinforcing rib 25 are respectively arranged on the two surfaces of the bracket 2 in the thickness direction and are symmetrical about the reference plane. It can be understood that the thickness direction of the bracket 2 is the up-down direction, the bracket 2 is symmetrical about the up-down direction, and the first reinforcing rib 24 and the second reinforcing rib 25 are located on the upper surface and the lower surface of the bracket 2, so that the first reinforcing rib 24 and the second reinforcing rib 25 can be symmetrical about the up-down direction, respectively. Such an arrangement can reduce the types of mold cavity development and the complexity of the process, thereby increasing the production life of the mold cavity, reducing cost investment and increasing revenue.
[0038] In addition, Figure 1-Figure 3 As shown, the bracket 2 is provided with a third reinforcing rib 26, which is provided on the outer side wall of the second mounting hole 22 and extends in the circumferential direction, and the end of the third reinforcing rib 26 is connected to the first reinforcing rib 24. In other words, the third reinforcing rib 26 is located on the bracket 2, and the third reinforcing rib 26 is connected to the outer periphery of the second mounting hole 22, so that the structural strength of the bracket 2 and the rigidity of the second mounting hole 22 can be improved, and then the torsional limiting capacity, fatigue durability and vibration isolation performance of the suspension 1 can be improved.
[0039] The vehicle according to the embodiment of the utility model includes: the suspension 1 of the above embodiment, by arranging the first bushing 3, the second bushing 4 and the third bushing 5 on the bracket 2, so that the suspension 1 can be connected with the subframe and the powertrain, and the first bushing 3 and the second bushing 4 are respectively located at the two ends of the bracket 2, and the axes of the second bushing 4 and the third bushing 5 are parallel, so that the suspension 1 can have the characteristics of commonality, platformization, serialization, construction adaptability and good compatibility, and can also improve the torsional limiting ability, fatigue durability and vibration isolation performance of the suspension 1, thereby reducing the weight of the suspension 1 and saving costs.
[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0041] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.
[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.
[0043] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.
Claims
1. A suspension, characterized in that: include: Bracket (2); A first bushing (3), the first bushing (3) being arranged at one end of the bracket (2) in the length direction, the first bushing (3) being used for connecting to a sub-frame; a second bushing (4), the second bushing (4) being arranged at the other end of the bracket (2) in the length direction; A third bushing (5), the third bushing (5) being arranged between the two ends of the bracket (2) in the length direction, the second bushing (4) and the third bushing (5) being used for connecting to a powertrain, and the axes of the second bushing (4) and the third bushing (5) being parallel.
2. The suspension according to claim 1, characterized in that The axes of the second bushing (4) and the third bushing (5) are both perpendicular to the axis of the first bushing (3).
3. The suspension according to claim 1, characterized in that: The bracket (2) has a first mounting hole (21), a second mounting hole (22) and a third mounting hole (23); the first mounting hole (21) and the second mounting hole (22) are located at two ends of the bracket (2) in a length direction; the third mounting hole (23) is located between the two ends of the bracket (2) in a length direction; the first bushing (3) is arranged in the first mounting hole (21); the second bushing (4) is arranged in the second mounting hole (22); and the third bushing (5) is arranged in the third mounting hole (23).
4. The suspension according to claim 3, characterized in that: The bracket (2) is provided with a first reinforcing rib (24), wherein the first reinforcing rib (24) extends from the outer peripheral wall of the first mounting hole (21) to the outer peripheral wall of the second mounting hole (22).
5. The suspension according to claim 4, characterized in that The first reinforcing rib (24) comprises: a first rib segment (241), the first rib segment (241) being arranged on an outer peripheral wall of the first mounting hole (21); a second rib segment (242), the second rib segment (242) being connected to the first rib segment (241), the second rib segment (242) extending along a side edge in the width direction of the bracket (2); A third rib segment (243), the third rib segment (243) being connected to the second rib segment (242), the third rib segment (243) being connected to the outer peripheral wall of the second mounting hole (22) after being bent relative to the second rib segment (242).
6. The suspension according to claim 4, characterized in that The bracket (2) is provided with a second reinforcing rib (25), and the second reinforcing rib (25) is arranged on the outer peripheral wall of the third mounting hole (23).
7. The suspension according to claim 6, characterized in that There are a plurality of second reinforcing ribs (25), at least two of the plurality of second reinforcing ribs (25) extend in a direction adjacent to the first mounting hole (21) and are close to each other, at least two of the plurality of second reinforcing ribs (25) extend in a direction adjacent to the second mounting hole (22) and are away from each other, and at least one of the plurality of second reinforcing ribs (25) is connected to the first reinforcing rib (24).
8. The suspension according to claim 6, characterized in that The support (2) has a reference plane, and two surfaces of the support (2) in a thickness direction are symmetrical with respect to the reference plane; The first reinforcing rib (24) and the second reinforcing rib (25) are respectively arranged on two surfaces of the bracket (2) in the thickness direction and are symmetrical with respect to the reference plane.
9. The suspension according to claim 4, characterized in that: The bracket (2) is provided with a third reinforcing rib (26), the third reinforcing rib (26) is arranged on the outer side wall of the second mounting hole (22) and extends in the circumferential direction, and the end of the third reinforcing rib (26) is connected to the first reinforcing rib (24).
10. A vehicle, characterized in that: include: The suspension (1) according to any one of claims 1 to 9.